Battery pack

Claim 2

A battery pack comprising: at least one rechargeable battery; a case containing the rechargeable battery; a secondary coil which is housed in the case, is excited externally and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the case; and a printed circuit board having the secondary coil attached to one side thereof and electronic parts which make up the control circuit attached to the other side thereof.

Claim 3

A battery pack comprising: at least one rechargeable battery; a case containing the rechargeable battery; a secondary coil which is housed in the case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the case; and a printed circuit board having the secondary coil and electronic parts which make up the control circuit attached to one side thereof.

Claim 4

A battery pack comprising: at least one rechargeable battery; a case containing the rechargeable battery; a secondary coil which is housed in the case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the case; and a printed circuit board having the secondary coil and electronic parts which make up the control circuit attached to one side thereof.

Claim 5

A battery pack comprising: at least one rechargeable battery; a case containing the rechargeable battery; a secondary coil which is housed in the case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the case; a protection circuit; and a switching device, which is turned from on to off by the control circuit when the rechargeable battery reaches full charge, serving the dual purpose as a current shut-off device for the protection circuit.

Claim 6

A battery pack comprising: at least one rechargeable battery; a case containing the rechargeable battery; a secondary coil which is housed in the case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the case; a protection circuit; and a switching device, which is turned from on to off by the control circuit when the rechargeable battery reaches full charge, serving the dual purpose as a current shut-off device for the protection circuit.

Claim 7

A battery pack comprising: at least one rechargeable battery; a case containing the rechargeable battery: a secondary coil which is housed in the case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the case; and wherein the case contains the control circuit and a protection circuit, the control circuit comprises a computation circuit, and the computation circuit of the control circuit serves the dual purpose as a computation circuit for the protection circuit.

Claim 8

A battery pack comprising: at least one rechargeable battery; a case containing the rechargeable battery: a secondary coil which is housed in the case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the case; and wherein the case contains the control circuit and a protection circuit, the control circuit comprises a computation circuit, and the computation circuit of the control circuit serves the dual purpose as a computation circuit for the protection circuit.

Claim 9

A battery pack comprising: at least one rechargeable battery; a case containing the rechargeable battery; a secondary coil which is housed in the case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the case; and wherein an outer case of the rechargeable battery contained in the battery pack is made of iron or iron alloy.

Claim 10

A battery pack comprising: at least one rechargeable battery; a case containing the rechargeable battery; a secondary coil which is housed in the case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the case; and wherein an outer case of the rechargeable battery contained in the battery pack is made of iron or iron alloy.

Claim 11

A battery pack as recited in claim 5 wherein the outer case of the rechargeable battery contained in the battery pack is made of stainless steel.

Claim 12

A battery pack as recited in claim 5 wherein the outer case of the rechargeable battery contained in the battery pack is made of iron with a metal plated outside surface.

Claim 13

A battery pack comprising: at least one rechargeable battery; a case containing the rechargeable battery; a secondary coil which is housed in the case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable batter contained in the case; wherein the at least one rechargeable battery has a rectangular cross-sectional shape and a width greater than its thickness, an outer case of the battery has wide front and back surfaces and narrow surfaces on both sides and on the top and bottom, and the secondary coil is disposed close to the narrow surfaces and away from the wide front and back surfaces of the outer case of the battery; and wherein the outer case of the battery is made of aluminum or aluminum alloy.

Claim 14

A battery pack comprising: at least one rechargeable battery; a case containing the rechargeable battery; a secondary coil which is housed in the case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable batter contained in the case; wherein the at least one rechargeable battery has a rectangular cross-sectional shape and a width greater than its thickness, an outer case of the battery has wide front and back surfaces and narrow surfaces on both sides and on the top and bottom, and the secondary coil is disposed close to the narrow surfaces and away from the wide front and back surfaces of the outer case of the battery; and wherein the outer case of the battery is made of aluminum or aluminum alloy.

Claim 15

A battery pack comprising: at least one rechargeable battery; a case containing the rechargeable battery; a secondary coil which is housed in the case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the case; wherein the at least one rechargeable battery has a rectangular cross-sectional shape and a width greater than its thickness, an outer case of the battery has wide front and back surfaces and narrow surfaces on both sides and on the top and bottom, and the secondary coil is disposed close to the narrow surfaces and away from the wide front and back surfaces of the outer case of the battery; and wherein the outer case of the battery is made of iron or iron alloy.

Claim 16

A battery pack comprising: at least one rechargeable battery; a case containing the rechargeable battery; a secondary coil which is housed in the case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the case; wherein the at least one rechargeable battery has a rectangular cross-sectional shape and a width greater than its thickness, an outer case of the battery has wide front and back surfaces and narrow surfaces on both sides and on the top and bottom, and the secondary coil is disposed close to the narrow surfaces and away from the wide front and back surfaces of the outer case of the battery; and wherein the outer case of the battery is made of iron or iron alloy.

Claim 17

A battery pack comprising: at least one rechargeable battery; a case containing the rechargeable battery; a secondary coil which is housed in the case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the case; wherein the at least one rechargeable battery has a rectangular cross-sectional shape and a width greater than its thickness, an outer case of the battery has wide front and back surfaces and narrow surfaces on both sides and on the top and bottom, and the secondary coil is disposed close to the narrow surfaces and away from the wide front and back surfaces of the outer case of the battery; and wherein the outer case of the rectangular battery is made of stainless steel.

Claim 18

A battery pack comprising: at least one rechargeable battery; a case containing the rechargeable battery; a secondary coil which is housed in the case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the case; wherein the at least one rechargeable battery has a rectangular cross-sectional shape and a width greater than its thickness, an outer case of the battery has wide front and back surfaces and narrow surfaces on both sides and on the top and bottom, and the secondary coil is disposed close to the narrow surfaces and away from the wide front and back surfaces of the outer case of the battery; and wherein the outer case of the rectangular battery is made of stainless steel.

Claim 19

A battery pack comprising: at least one rechargeable battery; a case containing the rechargeable battery; a secondary coil which is housed in the case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the case; wherein the at least one rechargeable battery has a rectangular cross-sectional shape and a width greater than its thickness, an outer case of the battery has wide front and back surfaces and narrow surfaces on both sides and on the top and bottom, and the secondary coil is disposed close to the narrow surfaces and away from the wide front and back surfaces of the outer case of the battery; and wherein the outer case of the battery is made of iron with a metal plated outside surface.

Claim 20

A battery pack comprising: at least one rechargeable battery; a case containing the rechargeable battery; a secondary coil which is housed in the case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the case; wherein the at least one rechargeable battery has a rectangular cross-sectional shape and a width greater than its thickness, an outer case of the battery has wide front and back surfaces and narrow surfaces on both sides and on the top and bottom, and the secondary coil is disposed close to the narrow surfaces and away from the wide front and back surfaces of the outer case of the battery; and wherein the outer case of the battery is made of iron with a metal plated outside surface.

Claim 21

A battery pack and charging stand comprising: a battery pack case which is attachable to a portable electric device in a detachable manner; at least one rechargeable battery contained in the battery pack case; a secondary coil which is housed in the battery pack case, is excited externally and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the battery pack case; a charging stand case in which the portable electric device, which has a battery pack attached, is attachable in a detachable manner; a primary coil which is housed in the charging stand case, is excited by AC, and generates AC in the secondary coil by magnetic induction; and a printed circuit board having the secondary coil attached to one side thereof and electronic parts which make up the control circuit attached to the other side thereof.

Claim 22

A battery pack and charging stand comprising: a battery pack case which is attachable to a portable electric device in a detachable manner; at least one rechargeable battery contained in the battery pack case; a secondary coil which is housed in the battery pack case, is excited externally and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the battery pack case; a charging stand case in which the portable electric device, which has a battery pack attached, is attachable in a detachable manner; a primary coil which is housed in the charging stand case, is excited by AC, and generates AC in the secondary coil by magnetic induction; and a printed circuit board having the secondary coil attached to one side thereof and electronic parts which make up the control circuit attached to the other side thereof.

Claim 23

A battery pack and charging stand comprising: a battery pack case which is attachable to a portable electric device in a detachable manner; at least one rechargeable battery contained in the battery pack case: a secondary coil which is housed in the battery pack case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the battery pack case; a charging stand case in which the portable electric device, which has a battery pack attached, is attachable in a detachable manner; a primary coil which is housed in the charging stand case, is excited by AC, and generates AC in the secondary coil by magnetic induction; and a printed circuit board having the secondary coil and electronic parts which make up the control circuit attached to one side thereof.

Claim 24

A battery pack and charging stand comprising: a battery pack case which is attachable to a portable electric device in a detachable manner; at least one rechargeable battery contained in the battery pack case: a secondary coil which is housed in the battery pack case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the battery pack case; a charging stand case in which the portable electric device, which has a battery pack attached, is attachable in a detachable manner; a primary coil which is housed in the charging stand case, is excited by AC, and generates AC in the secondary coil by magnetic induction; and a printed circuit board having the secondary coil and electronic parts which make up the control circuit attached to one side thereof.

Claim 25

A battery pack and charging stand comprising: a battery pack case which is attachable to a portable electric device in a detachable manner; at least one rechargeable battery contained in the batter pack case; a secondary coil which is housed in the battery pack case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the battery pack case; a charging stand case in which the portable electric device, which has a battery pack attached, is attachable in a detachable manner; a primary coil which is housed in the charging stand case, is excited by AC, and generates AC in the secondary coil by magnetic induction; a protection circuit; and a switching device, which is turned from on to off by the control circuit when the rechargeable battery reaches full charge, serving the dual purpose as a current shut-off device for the protection circuit.

Claim 26

A battery pack and charging stand comprising: a battery pack case which is attachable to a portable electric device in a detachable manner; at least one rechargeable battery contained in the batter pack case; a secondary coil which is housed in the battery pack case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the battery pack case; a charging stand case in which the portable electric device, which has a battery pack attached, is attachable in a detachable manner; a primary coil which is housed in the charging stand case, is excited by AC, and generates AC in the secondary coil by magnetic induction; a protection circuit; and a switching device, which is turned from on to off by the control circuit when the rechargeable battery reaches full charge, serving the dual purpose as a current shut-off device for the protection circuit.

Claim 27

A battery pack and charging stand comprising: a battery pack case which is attachable to a portable electric device in a detachable manner; at least one rechargeable battery contained in the battery pack case; a secondary coil which is housed in the battery pack case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the battery pack case; a charging stand case in which the portable electric device, which has a battery pack attached, is attachable in a detachable manner; a primary coil which is housed in the charging stand case, is excited by AC, and generates AC in the secondary coil by magnetic induction; and wherein the case contains the control circuit and a protection circuit, the control circuit comprises a computation circuit, and the computation circuit of the control circuit serves the dual purpose as a computation circuit for the protection circuit.

Claim 28

A battery pack and charging stand comprising: a battery pack case which is attachable to a portable electric device in a detachable manner; at least one rechargeable battery contained in the battery pack case; a secondary coil which is housed in the battery pack case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the battery pack case; a charging stand case in which the portable electric device, which has a battery pack attached, is attachable in a detachable manner; a primary coil which is housed in the charging stand case, is excited by AC, and generates AC in the secondary coil by magnetic induction; and wherein the case contains the control circuit and a protection circuit, the control circuit comprises a computation circuit, and the computation circuit of the control circuit serves the dual purpose as a computation circuit for the protection circuit.

Claim 29

A battery pack and charging stand comprising: a battery pack case which is attachable to a portable electric device in a detachable manner; at least one rechargeable battery contained in the battery pack case; a secondary coil which is housed in the battery pack case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the battery pack case; a charging stand case in which the portable electric device, which has a battery pack attached, is attachable in a detachable manner; a primary coil which is housed in the charging stand case, is excited by AC, and generates AC in the secondary coil by magnetic induction; and wherein an outer case of the rechargeable battery contained in the battery pack case is made of iron or iron alloy.

Claim 30

A battery pack and charging stand comprising: a battery pack case which is attachable to a portable electric device in a detachable manner; at least one rechargeable battery contained in the battery pack case; a secondary coil which is housed in the battery pack case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the battery pack case; a charging stand case in which the portable electric device, which has a battery pack attached, is attachable in a detachable manner; a primary coil which is housed in the charging stand case, is excited by AC, and generates AC in the secondary coil by magnetic induction; and wherein an outer case of the rechargeable battery contained in the battery pack case is made of iron or iron alloy.

Claim 31

A battery pack and charging stand as recited in claim 16 wherein the outer case of the rechargeable battery contained in the battery pack case is made of stainless steel.

Claim 32

A battery pack and charging stand as recited in claim 16 wherein the outer case of the rechargeable battery contained in the battery pack case is made of iron with a metal plated outside surface.

Claim 33

A battery pack and charging stand comprising: a battery pack case which is attachable to a portable electric device in a detachable manner; at least one rechargeable battery contained in the battery pack case; a secondary coil which is housed in the battery pack case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable batter contained in the battery pack case; a charging stand case in which the portable electric device, which has a battery pack attached, is attachable in a detachable manner; a primary coil which is housed in the charging stand case, is excited by AC, and generates AC in the secondary coil by magnetic induction; wherein the at least one rechargeable battery has a rectangular cross-sectional shape and a width greater than its thickness, an outer case of the battery has wide front and back surfaces and narrow surfaces on both sides and on the top and bottom, and the secondary coil is disposed close to the narrow surfaces and away from the wide front and back surfaces of the outer case of the battery; and wherein the outer case of the battery is made of aluminum or aluminum alloy.

Claim 34

A battery pack and charging stand comprising: a battery pack case which is attachable to a portable electric device in a detachable manner; at least one rechargeable battery contained in the battery pack case; a secondary coil which is housed in the battery pack case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable batter contained in the battery pack case; a charging stand case in which the portable electric device, which has a battery pack attached, is attachable in a detachable manner; a primary coil which is housed in the charging stand case, is excited by AC, and generates AC in the secondary coil by magnetic induction; wherein the at least one rechargeable battery has a rectangular cross-sectional shape and a width greater than its thickness, an outer case of the battery has wide front and back surfaces and narrow surfaces on both sides and on the top and bottom, and the secondary coil is disposed close to the narrow surfaces and away from the wide front and back surfaces of the outer case of the battery; and wherein the outer case of the battery is made of aluminum or aluminum alloy.

Claim 35

A battery pack and charging stand comprising: a batter pack case which is attachable to a portable electric device in a detachable manner; at least one rechargeable battery contained in the battery pack case; a secondary coil which is housed in the battery pack case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the battery pack case; a charging stand case in which the portable electric device, which has a battery pack attached, is attachable in a detachable manner; a primary coil which is housed in the charging stand case, is excited by AC, and generates AC in the secondary coil by magnetic induction; wherein the at least one rechargeable battery has a rectangular cross-sectional shape and a width greater than its thickness, an outer case of the battery has wide front and back surfaces and narrow surfaces on both sides and on the top and bottom, and the secondary coil is disposed close to the narrow surfaces and away from the wide front and back surfaces of the outer case of the rectangular battery; and wherein the outer case of the rectangular battery is made of iron or iron alloy.

Claim 36

A battery pack and charging stand comprising: a batter pack case which is attachable to a portable electric device in a detachable manner; at least one rechargeable battery contained in the battery pack case; a secondary coil which is housed in the battery pack case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the battery pack case; a charging stand case in which the portable electric device, which has a battery pack attached, is attachable in a detachable manner; a primary coil which is housed in the charging stand case, is excited by AC, and generates AC in the secondary coil by magnetic induction; wherein the at least one rechargeable battery has a rectangular cross-sectional shape and a width greater than its thickness, an outer case of the battery has wide front and back surfaces and narrow surfaces on both sides and on the top and bottom, and the secondary coil is disposed close to the narrow surfaces and away from the wide front and back surfaces of the outer case of the rectangular battery; and wherein the outer case of the rectangular battery is made of iron or iron alloy.

Claim 37

A battery pack and charging stand comprising: a battery pack case which is attachable to a portable electric device in a detachable manner; at least one rechargeable battery contained in the battery pack case; a secondary coil which is housed in the battery pack case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the battery pack case; a charging stand case in which the portable electric device, which has a battery pack attached, is attachable in a detachable manner; a primary coil which is housed in the charging stand case, is excited by AC, and generates AC in the secondary coil by magnetic induction; wherein the at least one rechargeable battery has a rectangular cross-sectional shape and a width greater than its thickness, an outer case of the battery has wide front and back surfaces and narrow surfaces on both sides and on the top and bottom, and the secondary coil is disposed close to the narrow surfaces and away from the wide front and back surfaces of the outer case of the battery; and wherein the outer case of the battery is made of stainless steel.

Claim 38

A battery pack and charging stand comprising: a battery pack case which is attachable to a portable electric device in a detachable manner; at least one rechargeable battery contained in the battery pack case; a secondary coil which is housed in the battery pack case, is excited externally, and outputs AC; a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the battery pack case; a charging stand case in which the portable electric device, which has a battery pack attached, is attachable in a detachable manner; a primary coil which is housed in the charging stand case, is excited by AC, and generates AC in the secondary coil by magnetic induction; wherein the at least one rechargeable battery has a rectangular cross-sectional shape and a width greater than its thickness, an outer case of the battery has wide front and back surfaces and narrow surfaces on both sides and on the top and bottom, and the secondary coil is disposed close to the narrow surfaces and away from the wide front and back surfaces of the outer case of the battery; and wherein the outer case of the battery is made of stainless steel.

Claim 39

A battery pack and charging stand comprising: a battery pack case which is attachable to a portable electric device in a detachable manner; at least one rechargeable battery contained in the battery pack case; a secondary coil which is housed in the battery pack case, is excited externally and outputs AC: a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the battery pack case; a charging stand case in which the portable electric device, which has a battery pack attached, is attachable in a detachable manner; a primary coil which is housed in the charging stand case, is excited by AC, and generates AC in the secondary coil by magnetic induction; wherein the at least one rechargeable battery has a rectangular cross-sectional shape and a width greater than its thickness, an outer case of the battery has wide front and back surfaces and narrow surfaces on both sides and on the top and bottom, and the secondary coil is disposed close to the narrow surfaces and away from the wide front and back surfaces of the outer case of the battery; and wherein the outer case of the battery is made of iron with a metal plated outside surface.

Claim 40

A battery pack and charging stand comprising: a battery pack case which is attachable to a portable electric device in a detachable manner; at least one rechargeable battery contained in the battery pack case; a secondary coil which is housed in the battery pack case, is excited externally and outputs AC: a control circuit which controls electric power induced in the secondary coil and charges the rechargeable battery contained in the battery pack case; a charging stand case in which the portable electric device, which has a battery pack attached, is attachable in a detachable manner; a primary coil which is housed in the charging stand case, is excited by AC, and generates AC in the secondary coil by magnetic induction; wherein the at least one rechargeable battery has a rectangular cross-sectional shape and a width greater than its thickness, an outer case of the battery has wide front and back surfaces and narrow surfaces on both sides and on the top and bottom, and the secondary coil is disposed close to the narrow surfaces and away from the wide front and back surfaces of the outer case of the battery; and wherein the outer case of the battery is made of iron with a metal plated outside surface.