Patent EP1289096A2 successfully refreshed from Google Patents.
EP1289096A2
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Battery apparatus for controlling plural batteries and control method of plural batteries
Assignee: Hitachi Ltd
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Filing: 2002-02-25
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Granted: —
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Expires: 2022-02-25
Abstract
Abstract Lower order control devices (IC-1, IC-2, IC-3) control plural battery cells (VB1, ..., VB12) configuring plural battery modules. An input terminal (In) of the low order control device (IC-1) in the highest potential, an output terminal (Out) of the low order control device (IC-3) in the lowest potential, and a high order control device (MPU) are connected by isolating units, photocouplers (F1, ..., F6). Diodes (D2, D4, ZD4) which prevent a discharge current of the battery cells in the battery modules are disposed between the output terminal of the low order control device and the battery cells in the battery module on the low potential side. Terminals related to input/output of a signal are electrically connected without isolating among the plural low order control devices.
Inventors
- 👤 Hideki Hitachi Ltd. Intell.Prop.Group Miyazaki
- 👤 Akihiko Hitachi Ltd. Intell.Prop.Group Emori
- 👤 Akihiko Shin-Kobe Elec.Machinery Co. Ltd. Kudo
- 👤 Tsuyoshi Shin-Kobe Elec.Machinery Co. Ltd. Kai
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 09:58
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/50; B; B60; B60L; B60L50/00; B60L50/50; B60L50/60; B60L50/64; B60L53/00; B60L53/10; B60L53/11; B60L58/00; B60L58/10; B60L58/18; B60L58/19; B60L58/21; H01; H01M; H01M10/00; H01M10/42; H01M10/425; H01M10/48; H01M10/482; H01M50/00; H01M50/50; H01M50/569; H02J7/52; H02J7/54; H02J7/56; H02J7/60; H02J7/61; H02J7/63; H02J7/80; H02J7/82; G; G01; G01R; G01R31/00; G01R31/36; G01R31/396; H01M10/05; H01M10/052; H01M2010/4271; H01M2010/4278; H01M2220/00; H01M2220/20; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02T; Y02T10/00; Y02T10/60; Y02T10/70; Y02T10/7072; Y02T90/00; Y02T90/10; Y02T90/12; Y02T90/14
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
226 words
A battery apparatus, comprising: plural battery modules connected in series
each having plural battery cells (VB1, ..., VB12)
connected in series; plural low order control devices (IC-1, IC-2,
IC-3) which are provided in correspondence with the
plural battery modules, respectively, each of the
plural low order control devices controlling the plural
battery cells (VB1, ..., VB12) configuring
corresponding one of the plural battery modules; a high order control device (MPU) which
controls the plural low order control devices (IC-1,
IC-2, IC-3); isolating or potential converting units (F1-F6)
which connects an input terminal (In) of the low
order control device (TC-1) at a highest potential
among the plural low order control devices (IC-1, IC-2,
IC-3), an output terminal (Out) of the low order
control device (IC-3) at a lowest potential among the
plural low order control devices, and the high order
control device (MPU); and interruption elements (D2, D4, ZD4) each of
which is disposed between the output terminal (Out) of
corresponding one of the plural low order control
devices and the battery cell in corresponding one of
the plural battery modules on a low potential side and
blocks discharge current of the battery cells in the
corresponding battery module, wherein terminals related to input and output of a
signal are connected in an electrically non-isolated
state among the plural low order control devices (IC-1,
IC-2, IC-3).
Claim 2
Dependent Claim
53 words
A battery apparatus according to claim 1,
wherein the input terminal (In) of each of the plural
low order control devices is electrically connected to
the battery cell on a high potential side among the
battery cells (VB1, ..., VB12) within the corresponding
battery module being controlled by the low order
control device.
Claim 3
Dependent Claim
69 words
A battery apparatus according to claim 1,
wherein the plural low order control devices (IC-1, IC-2,
IC-3), the isolating or potential conversion units
which are disposed on the low order control devices
(IC-1, IC-3) in the highest and lowest potentials, and
the high order control device (MPU) are mounted on a
same package, and power is supplied from outside of the
package to the high order control device (MPU).
Claim 4
Dependent Claim
145 words
A control method of a battery apparatus which
comprises: plural battery modules connected in series
each having plural battery cells (VB1, ..., VB12)
connected in series; plural low order control devices (IC-1, IC-2,
IC-3) which are provided in correspondence with the
plural battery modules, respectively, each of the
plural low order control devices controlling the plural
battery cells (VB1, ..., VB12) configuring
corresponding one of the plural battery modules; and a high order control device (MPU) which
controls the plural low order control devices (IC-1,
IC-2, IC3), the control method comprising the step of: comparing by the high order control device
(MPU) a signal transmitted to the low order control
device (IC-1) at a highest potential and a signal
returning from the low order control device (IC-3) at
the lowest potential, and transmitting a next
instruction when the battery apparatus is determined to
be normal.
Claim 5
Dependent Claim
154 words
A control method of a battery apparatus
according to claim 4, further comprising the steps of: by one of the plural low order control
devices (IC-1, IC-2, IC-3), detecting states of the
plural battery cells (VB1, ..., VB12) of the
corresponding battery module controlled by the one low
order control device, obtaining a logical add or a
logical product of a signal representing the detected
states and an input signal transmitted from the low
order control device (IC-1) at a higher potential among
the plural low order control devices (IC-1, IC-2, IC-3),
and outputting a result of the logical add or
product to the low order control device (IC-3) at a
lower potential side among the plural low order control
devices (IC-1, IC-2, IC-3); and checking abnormality of the battery apparatus
by the high order control device (MPU) according to the
signal returning from the low order control device (IC-3)
at the lowest potential.
Claim 6
Dependent Claim
60 words
A control method of a battery apparatus
according to claim 4, wherein the low order control
device performs capacity adjustment to discharge
remaining capacity of one of the battery cells in the
corresponding battery module which voltage is higher
than a reference value, and the low order control
device having completed the capacity adjustment is
placed into a sleep mode.
Claim 7
Dependent Claim
114 words
A battery apparatus, comprising: plural battery modules connected in series
each having plural battery cells (VB1, ..., VB12)
connected in series; plural low order control devices (IC-1, IC-2,
IC-3) which are provided in correspondence with the
plural battery modules, respectively, each of the
plural low order control devices controlling the plural
battery cells (VB1, ..., VB12) configuring
corresponding one of the plural battery modules; a high order control device (MPU) which
controls the plural low order control devices (IC-1,
IC-2, IC-3); a voltage detecting unit which detects
voltages of the plural battery cells (VB1, ..., VB12)
within the battery module; and an error calibration terminal which
calibrates an error of the voltage detecting unit.
Claim 8
Dependent Claim
45 words
A battery apparatus according to claim 7,
wherein: the voltage detecting unit is an A/D
converter; and the low order control device compensates an
output value of the A/D converter by previously giving
a digital value to the error calibration terminal of
the A/D converter.
Claim 9
Dependent Claim
92 words
A battery apparatus according to claim 8,
wherein: the A/D converter comprises: an integration unit which integrates a unit
amount of electricity according to a number of pulses; a comparing unit which compares an integral
value of the integration unit with a voltage of the
battery cell and stops the pulse; a counter unit which outputs the number of
pulses when the pulse is stopped by the comparing unit;
and a compensation unit which compensates an
output of the counter unit according to the digital
value given to the error calibration terminal.
Claim 10
Dependent Claim
53 words
A battery apparatus according to claim 9,
wherein the compensation unit changes a counted value
of the counter unit according to the digital value
given to the error calibration terminal to compensate
an offset of the A/D conversion and changes a width of
the pulse to compensate a gain of the A/D conversion.
References Cited (Backward Citations)
No citation records indexed.
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