JP2015191750A - battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a battery efficiently exhibiting battery performance while minimizing the generation of dendrite.SOLUTION: A battery 10 includes an electrode body 110 and an electrolyte 112 which are stored in a single housing 120, the electrode body 110 comprising a positive side collector foil 102, a positive side electrode material 104 laminated on the positive side collector foil 102, a negative side collector foil 106, and a negative side electrode material 108 laminated on the negative side collector foil 106. A positive side electrode terminal Pn and a negative side electrode terminal Pn are connected to the positive side collector foil 102 and to the negative side collector foil 106, respectively. In the battery, at least one of the positive side electrode terminal Pn or the negative side electrode terminal Pn is provided in a plural number, and a control section 206 allowing individual control of each value of currents flowing through the electrode terminal Pp, Pn is included.

Description

  The present invention relates to a battery.

2. Description of the Related Art Conventionally, various types of batteries that generate current using chemical reactions of substances have been widely used.
For example, the following Patent Document 1 is a technology related to a fuel cell, and includes a fuel cell stack in which fuel cells including a fuel cell separator in which a reaction gas channel is formed, and both ends in the stacking direction of the fuel cell stack. A current collecting plate having a plurality of divided current collecting plates disposed in at least one of the current collecting plate, a conductive portion electrically connected to the divided current collecting plate, and conduction between the conductive portion and the divided current collecting plate. Or switching means for switching to non-conduction, and control means for controlling switching of conduction or non-conduction between the conductive portion and the divided current collector plate, the control means comprising a reaction gas flow of the fuel cell separator. The switching of the conduction or non-conduction is controlled along the reaction gas flowing through the path.

  Patent Document 2 below is a technique related to an electrode for a secondary battery and the like, and includes a plurality of electrode elements including a plurality of divided current collector foils and active material layers respectively formed on the divided current collector foils. And a conductive element connecting the current collector foils of the electrode elements.

JP 2008-293825 A JP 2010-97729 A

A general chemical battery has a configuration in which an electrode material is stacked on a current collector foil, and an electric current generated by a chemical reaction between the electrode material and an electrolyte in an electrolytic solution is taken out.
In each battery, the electrode material has a certain area, but the performance of the electrode material in each region (electrolyte uptake amount) is not necessarily uniform, and the region where the electrolyte is excessively supplied to the performance. In some cases, an electrolyte that cannot be completely taken into the electrode material is deposited, and dendrites may be generated.
In order to suppress the occurrence of such dendrites, the amount of current must be set in accordance with the low performance region, and the battery performance cannot be maximized.

  The present invention has been made in view of the above-described problems of the prior art, and an object thereof is to efficiently exhibit battery performance while suppressing the generation of dendrites.

In order to solve the above-described problems and achieve the object, a battery according to the invention of claim 1 includes a positive current collector foil and a positive electrode laminated on the positive current collector foil in a single casing. A positive electrode in which an electrode body composed of a material, a negative current collector foil, and a negative electrode material laminated on the negative current collector foil, and an electrolyte is stored and connected to the positive current collector foil A battery comprising a terminal and a negative electrode terminal connected to the negative current collector foil, wherein at least one of the positive electrode terminal or the negative electrode terminal is provided in plural, A plurality of ammeters that respectively measure the current flowing through the electrode terminals provided, and a control unit that individually controls the amount of current flowing through the electrode terminals based on the current value measured by the ammeter, It is characterized by that.
In the battery according to the second aspect of the present invention, the control means causes a maximum allowable current to flow through all the electrode terminals when the battery is initially energized, and uses the current value measured by each ammeter as an initial current value. It is recorded, and the amount of current is controlled so that the recorded current value measured by the ammeter after the initial energization becomes the initial current value.
The battery according to the invention of claim 3 is characterized in that the control means reduces the amount of current flowing through the corresponding electrode terminal as the current value measured by the ammeter is smaller.
In the battery according to the invention of claim 4, the current collector foil and the electrode material on the side where the plurality of electrode terminals are provided are divided into a plurality of regions, and the current collector foil in each of the divided regions is A single electrode terminal is provided.
In the battery according to the invention of claim 5, when the difference between the current values of the adjacent electrode terminals is equal to or less than a predetermined value, the control means has a short circuit between the adjacent electrode terminals. Judging.
In the battery according to the invention of claim 6, when the control means determines that the short circuit has occurred, the battery is charged or discharged from the electrode terminal determined to have the short circuit. It is characterized by eliminating.

According to the first aspect of the present invention, a plurality of at least one of the positive electrode terminal and the negative electrode terminal are provided, and the amount of current flowing through the plurality of electrode terminals is individually controlled. The performance of the electrode material in the battery is not uniform, and if an electrolyte exceeding the performance is provided, dendrites may be generated on the surface of the electrode material. As in the first aspect of the present invention, by providing a plurality of electrode terminals on at least one electrode and controlling the amount of current in accordance with the performance of the electrode material for each region, the generation of dendrites can be suppressed efficiently. Can exhibit battery performance.
According to the invention of claim 2, since the initial current value is recorded at the time of initial energization of the battery, and thereafter the current amount is controlled so that the current value becomes equal to or less than the initial current value, it is appropriate for each electrode terminal. A target current value (initial current value) can be set.
According to the third aspect of the invention, the smaller the value of the current flowing through the electrode terminal, that is, the more likely it is that lithium ions are likely to deposit and the dendrite is more likely to be generated, the smaller the amount of current flowing, so be able to.
According to the invention of claim 4, since the current collector foil and the electrode material on the side provided with the plurality of electrode terminals are divided into a plurality of regions, the electrode terminal and the electrode for transferring charges to the electrode terminal Correspondence with body area becomes clear.
According to invention of Claim 5, when the difference of the electric current value of adjacent electrode terminals is below a predetermined value, it determines that the short circuit has arisen between the said adjacent electrode terminals. Since the occurrence of a short circuit causes a decrease in battery performance, the battery can be stably used by detecting the short circuit at an early stage.
According to the invention of claim 6, when it is determined that a short circuit has occurred in the electrode terminal, charging or discharging is performed from the electrode terminal determined to have a short circuit, thus eliminating the dendrite that causes the short circuit. Thus, the battery performance can be recovered early.

It is explanatory drawing which shows the structure of the battery 10 concerning embodiment. 3 is an explanatory view schematically showing an electrode body of a battery 10. FIG. 6 is an explanatory diagram showing another configuration of the battery 10. FIG. 3 is an explanatory diagram showing a configuration of a battery 10 according to a second embodiment. FIG. 6 is an explanatory diagram showing another configuration of the battery 10. FIG.

  Exemplary embodiments of a battery according to the present invention will be explained below in detail with reference to the accompanying drawings.

(Embodiment 1)
FIG. 1 is an explanatory diagram of a configuration of the battery 10 according to the first embodiment.
The battery 10 according to the embodiment includes a positive current collector foil 102, a positive electrode material 104 laminated on the positive current collector foil 102, a negative current collector foil 106, and a single housing 120. The electrode body 110 (110A, 110B) which consists of the negative side electrode material 108 laminated | stacked on the negative side current collection foil 106, and the electrolyte solution 112 are stored.
The battery 10 includes a positive electrode terminal Pp (Pp1 to Pp5) connected to the positive current collector foil 102 and a negative electrode terminal Pn (Pn1 to Pn5) connected to the negative current collector foil 106. Prepare.
The battery 10 may be a single battery that supplies power to an electric device or the like alone, or may be a single battery cell in an assembled battery configured by connecting a plurality of battery cells in series.

In the present embodiment, it is assumed that the battery 10 is a lithium ion secondary battery.
Therefore, an aluminum foil is used as the positive current collector foil 102, and lithium cobalt oxide or the like is used as the positive electrode material 104. Further, a copper foil is used as the negative current collector foil 106, and a carbon material or the like is used as the negative electrode material 108. Further, the electrolytic solution 112 contains lithium ions.
When the battery 10 is charged, lithium ions move from the positive electrode side to the negative electrode side. Further, when the battery 10 is discharged, lithium ions move from the negative electrode side to the positive electrode side.

  In FIG. 1, the battery 10 is illustrated as a one-sided electrode structure in which the electrode materials 104 and 108 are laminated on one surface of the positive and negative current collector foils 102 and 106, but the electrode material is disposed on both surfaces of the current collector foils 102 and 106. A double-sided electrode structure in which is laminated.

Here, a plurality of at least one of the positive electrode terminal Pp and the negative electrode terminal Pn of the battery 10 are provided.
In the example of FIG. 1, a plurality (five each) of both the positive electrode terminal Pp and the negative electrode terminal Pn are provided. A current line L is connected to each electrode terminal Pp, Pn.
As shown in FIG. 3, only one electrode terminal (negative electrode terminal Pn in the example of FIG. 3) is provided, and the other electrode terminal (positive electrode terminal Pp in the example of FIG. 3) is one. You may make it provide only.
When the battery 10 is a lithium ion secondary battery as in the present embodiment, it is preferable to provide a plurality of negative electrode terminals Pn when only one electrode terminal is provided. This is because, as will be described later, by providing a plurality of electrode terminals Pn and individually controlling the amount of current, an effect of suppressing generation of dendrites on the electrode body can be obtained.

An ammeter 202 and a current control circuit 204 are connected to the plurality of electrode terminals (negative electrode terminals Pn1 to Pn5 in FIG. 1), respectively. The ammeter 202 and the current control circuit 204 are connected to the control unit 206, respectively.
The control means in the claims is realized by the control unit 206 controlling the operation of the current control circuit 204 based on the measured value of the ammeter 202.
The ammeter 202 measures the current flowing through the plurality of electrode terminals Pp and Pn provided.
The current control circuit 204 is an integrated circuit composed of switches, fuses, contactors, and the like.
The control unit 206 includes a CPU, a ROM that stores and stores control programs, a RAM as an operation area of the control program, an EEPROM that holds various data in a rewritable manner, an interface unit that interfaces with peripheral circuits, and the like. Composed.
The control unit 206 is a BMU (Battery Management Unit) that monitors the state of the battery 10 and controls charging and discharging.

The control unit 206 controls the current control circuit 204 based on the current value measured by the ammeter 202 so that a desired amount of current flows through the electrode terminals Pp and Pn.
That is, the control unit 206 individually controls the amount of current flowing through the electrode terminals Pp and Pn based on the current value measured by the ammeter 202.
More specifically, the control unit 206 causes the maximum allowable current to flow through all the electrode terminals Pp and Pn when the battery 10 is initially energized, and records the current value measured by each ammeter 202 as the initial current value. After energization, the amount of current is controlled so that the current value measured by the ammeter 202 is equal to or less than the initial current value.
This is for measuring the magnitude of resistance in the region of the electrode body 110 connected to the electrode terminals Pp and Pn during initial energization.

Further, the control unit 206 may decrease the amount of current flowing through the corresponding electrode terminals Pp and Pn as the current value measured by the ammeter 202 is smaller.
This is because the smaller the current value flowing through the electrode terminals Pp and Pn, the more likely it is that lithium ions are likely to precipitate and dendrites are more likely to occur. The generation of dendrites can be more reliably suppressed by reducing the amount of current that flows to the electrode terminals Pp and Pn in a state where such dendrites are likely to occur.

FIG. 2 is an explanatory diagram schematically showing an electrode body of the battery 10.
FIG. 2 illustrates the negative electrode body 110B. In FIG. 2A, one electrode terminal Pn is connected to the negative current collector foil 106, and FIG. Electrode terminals Pn1 to Pn5 are connected.
A negative electrode material 108 is stacked on the negative current collector foil 106. Here, the performance of the electrode material (the negative electrode material 108 in FIG. 2) is preferably uniform over the entire region, but actually differs depending on each part.
For example, when the target value of the current flowing through the electrode terminal Pn is set to 10A in total, if the negative electrode material 108 is equally divided into 10 regions E1 to E10 as shown in FIG. 2A, the performance of the electrode material extends over the entire region. Current is 1.0 A in each region.
However, in reality, the amount of current (performance value) flowing in each of the regions E1 to E10 is different, and varies as shown in FIG. 2A. That is, the performance value of the region E1 is 1.0A, the performance value of the region E2 is 1.2A, the performance value of the region E3 is 0.8A, the performance value of the region E4 is 0.7A, and the performance value of the region E5 is 0.9A. The performance value of region E6 is 1.3A, the performance value of region E7 is 0.9A, the performance value of region E8 is 0.7A, the performance value of region E9 is 1.2A, and the performance value of region E10 is 1.1A. It is.

When a current is applied to the negative electrode material 108 in such a state such that 1.0 A flows in each of the regions E1 to E10, lithium ions are precipitated in a region where the performance value is less than 1.0 A, and dendrites Will occur.
In order to prevent dendrite from being generated in the configuration of FIG. 2A, the amount of current flowing in each region may be suppressed to 0.7 A, which is the minimum performance value in the regions E1 to E10. However, in this case, only 0.7 A × 10 = 7.0 A flows through the electrode terminal Pn, and the difference from the target current value (10 A) is 3.0 A.

On the other hand, in the battery 10 according to the embodiment, a plurality of electrode terminals Pn1 to Pn5 are connected to the negative current collector foil 106 as shown in FIG. 2B, and the amount of current flowing through the individual electrode terminals Pn1 to Pn5 is controlled.
Here, the current through the regions E1 and E2 is applied to the electrode terminal Pn1, the current through the regions E3 and E4 is applied to the electrode terminal Pn2, the current through the regions E5 and E6 is applied to the electrode terminal Pn3, and the current through the regions E5 and E6 is applied to the electrode terminal Pn4. It is assumed that currents passing through the regions E7 and E8 flow through the electrode terminals Pn5 and currents passing through the regions E9 and E10, respectively.
In this case, a target current is set for each electrode terminal Pn in accordance with the lower one of the performance values of the current supply region. That is, the electrode terminal Pn1 has a performance value of 1.0A × 2 in the region E1, the electrode terminal Pn2 has a performance value of 0.7A × 2 in the region E4, and the electrode terminal Pn3 has a performance value of 0.9A in the region E5. For the electrode terminal Pn5, the performance value of the region E10, 1.1A × 2, is set as the target current value.
As a result, 1.0 × 2 = 2.0 A for the electrode terminal Pn1, 0.7 × 2 = 1.4 A for the electrode terminal Pn2, 0.9 × 2 = 1.8 A for the electrode terminal Pn3, Pn4 is 0.7 × 2 = 1.4A, and electrode terminal Pn5 is 1.1 × 2 = 2.2A, so that a total of 8.8A flows. Compared to the configuration shown in FIG. The amount increases and is close to the target current value.
Thus, in the battery 10 according to the embodiment, an appropriate amount of current can be set according to the performance distribution of the current collector foil, and the performance of the battery 10 can be used more effectively.

Moreover, the control part 206 judges that the short circuit has arisen between the said adjacent electrode terminal Pp, Pn, when the difference of the electric current value of adjacent electrode terminal Pp, Pn is below a predetermined value.
As described above, the control unit 206 controls each electrode terminal Pp and Pn so that different current flows, but the difference between the current values of the adjacent electrode terminals Pp and Pn is equal to or less than a predetermined value, that is, substantially the same. In such a case, there is a high possibility that a short circuit is caused by the dendrite deposited on the surface of the electrode material.
When the control unit 206 determines that a short circuit has occurred, the control unit 206 eliminates the short circuit by charging or discharging the electrode terminals Pp and Pn determined to have a short circuit.
In the present embodiment, since the battery 10 is a lithium ion secondary battery, discharging is performed from the negative electrode terminal Pn to eliminate lithium dendrite generated in the negative electrode.
In addition, the control unit 206 lowers the amount of current flowing through the electrode terminals Pp and Pn once short-circuited than before the occurrence of the short-circuit. The electrode body connected to the short-circuited electrode terminals Pp and Pn is considered to have a high resistance, and if the current value is not changed, there is a high possibility that the short circuit will recur. Therefore, the recurrence of the short circuit is prevented by reducing the load.

When the difference between the initial current values of the adjacent electrode terminals Pp and Pn is less than a predetermined value, the current value is originally a close value, and thus the short circuit determination is not performed.
The short circuit determination is performed only when the battery 10 is charged or discharged with a current amount equal to or greater than a certain amount. This is because when operating with a relatively small amount of current, the amount of current flowing through each of the electrode terminals Pp and Pn is small, so that sufficient measurement accuracy cannot be obtained and erroneous determination may occur. is there.

In FIG. 1, one ammeter 202 is connected to one electrode terminal Pn. However, the present invention is not limited to this, and one ammeter 202 is connected to a plurality of electrode terminals Pn. May be. For example, when there are two ammeters 202 for ten electrode terminals Pn, five electrode terminals Pn are connected to one ammeter 202, and currents flow through the five connected electrode terminals Pn. Measure the average of the values.
Further, the ammeter 202 may be connected to only one of the plurality of electrode terminals Pn and used as a representative value of the current value. For example, when there are two ammeters 202 for ten electrode terminals Pn, the current values of the two electrode terminals Pn are measured and used as representative values of the current values of the ten electrode terminals Pn, and the remaining 8 The current value of each electrode terminal Pn is not measured.
According to such a configuration, the number of installed ammeters 202 can be reduced, and the production cost of the battery 10 can be reduced.

Further, instead of the ammeter 202, a temperature sensor that measures the temperature of the electrode terminal Pn may be used. That is, a correlation equation or a map for estimating the current value from the temperature of the electrode terminal Pn is created using the characteristic that the current value flowing increases as the temperature of the electrode terminal Pn increases. And you may make it estimate the electric current value corresponding to the temperature of the electrode terminal Pn using the measured value of a temperature sensor, the said correlation type | formula, and a map.
According to such a configuration, the current value of the electrode terminal Pn can be estimated using an inexpensive temperature sensor as compared with the ammeter 202, and the production cost of the battery 10 can be reduced.

In FIG. 1, one current control circuit 204 is connected to one electrode terminal Pn. However, the present invention is not limited to this, and one current control circuit 204 is connected to a plurality of electrode terminals Pn. You may do it. For example, when there are two current control circuits 204 for ten electrode terminals Pn, five electrode terminals Pn are connected to one current control circuit 204, and the five connected electrode terminals Pn are connected. The amount of current flowing is controlled by one current control circuit 204.
According to such a configuration, the number of installed current control circuits 204 can be reduced, and the production cost of the battery 10 can be reduced.

As described above, the battery 10 according to the embodiment includes a plurality of positive electrode terminals Pp and negative electrode terminals Pn, and individually controls the amount of current flowing through the plurality of electrode terminals. . The performance of the electrode body 110 in the battery 10 is not uniform, and if an electrolyte exceeding the performance is provided, dendrites may be generated on the surface of the electrode material. Like the battery 10, by providing a plurality of electrode terminals on at least one electrode and controlling the amount of current according to the performance of the electrode body 110 for each region, the battery can be efficiently produced while suppressing the generation of dendrites. Performance can be demonstrated.
Further, the battery 10 records the initial current value when the battery 10 is initially energized, and thereafter controls the amount of current so that the current value is equal to or less than the initial current value. A value (initial current value) can be set.
In addition, when the difference between the current values of the adjacent electrode terminals is equal to or less than a predetermined value, the battery 10 determines that a short circuit has occurred between the adjacent electrode terminals. Since the occurrence of a short circuit causes a decrease in battery performance, the battery can be stably used by detecting the short circuit at an early stage.
In addition, when the battery 10 determines that a short circuit has occurred in the electrode terminal, the battery 10 is charged or discharged from the electrode terminal determined to have a short circuit, eliminating the dendrite that causes the short circuit, Battery performance can be recovered early.

(Embodiment 2)
In the first embodiment, the positive current collector foil 102, the positive electrode material 104, the negative current collector foil 106, and the negative electrode material 108 are each continuously formed in the housing 120.
In the second embodiment, the positive current collector foil 102, the positive electrode material 104, the negative current collector foil 106, and the negative electrode material 108 are each divided into a plurality of regions, and one electrode terminal Pp, Pn is provided for each region. To connect.
In the following description, parts similar to those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

FIG. 4 is an explanatory diagram of a configuration of the battery 10 according to the second embodiment.
In the configuration shown in FIG. 4, the positive current collector foil 102 is divided into five regions 102A to 102E, and the positive electrode material 104 is divided into five regions 104A to 104E. -102E are connected to the positive electrode terminals Pp1-Pp5.
Similarly, for the negative electrode, the negative current collector foil 106 is divided into five regions 106A to 106E, and the negative electrode material 108 is divided into five regions 108A to 108E. Negative electrode terminals Pn1 to Pn5 are connected to 106A to 106E.
With such a configuration, the correspondence between the electrode terminals Pp and Pn and the region of the electrode body 110 that exchanges charges with the electrode terminals Pp and Pn becomes clear.
Note that such a region may be formed only on a part of the electrode body 110. That is, the electrode body 110 is divided in a region where a part of the plurality of electrode terminals Pp, Pn is connected, and the electrode body 110 is not divided in a region where the remaining electrode terminals Pp, Pn are connected. A configuration may be adopted (a plurality of electrode terminals Pp and Pn are provided in one region).

Moreover, you may install the member which partitions off each area | region of the electrode body 110 in the battery 10 like FIG.
FIG. 5 is an explanatory diagram showing another configuration of the battery 10.
In FIG. 5, partition members 114 (114 </ b> A to 114 </ b> D) that partition the regions of the electrode bodies 110 are provided corresponding to the divided electrode bodies 110.
The partition member 114 may be a member that physically and electrically separates each region, such as a plate made of the same material as the housing 120, or a separator that separates the positive electrode and the negative electrode in the battery. May be. When a separator is used as the partition member 114, each region is electrically separated, but the electrolyte or the like in the electrolytic solution 112 can move.
With such a configuration, a plurality of small batteries are formed in the battery 10, and each small battery can be controlled as an independent unit cell.

As described above, in the second embodiment, the electrode body 110 is divided into a plurality of regions, and the electrode terminals Pp and Pn are connected to the divided electrode bodies 110.
The first embodiment and the second embodiment described above both enable individual current amount control for the individual electrode terminals Pp and Pc, but the embodiment in which the electrode body 110 is not divided. Compared to 1, the current control performance can be further improved in the second embodiment.
Further, in the second embodiment, the configuration in which only the electrode body 110 is divided as shown in FIG. 4 is compared with the configuration in which the electrode body 110 is divided and each part is partitioned as shown in FIG. Then, both performances are equivalent in terms of current control performance.
However, in the configuration as shown in FIG. 5, since the partition member 114 is provided, even if dendrid is generated, its growth is hindered, so that occurrence of a short circuit due to contact between the dendriides can be avoided. Therefore, in the configuration of FIG. 5, it is not necessary to perform the short-circuit determination processing between the electrode terminals and the short-circuit elimination processing by the discharge when the short-circuit occurs.

Further, in the configuration of FIG. 4, the electrode body 110 is divided only on either the positive side or the negative side, and a plurality of electrode terminals are provided, and the other electrode body 110 is like the positive side electrode of FIG. 3. Only one electrode terminal may be provided without being divided.
According to such a configuration, since one of the electrodes is divided, the current control performance can be improved as compared with the configurations of FIGS. 1 and 3. Moreover, since it is not necessary to divide the other electrode, the manufacturing process can be simplified as compared with the configuration of FIGS.

  102 …… Positive current collector foil, 104 …… Positive electrode material, 106 …… Negative current collector foil, 108 …… Negative electrode material, 110 …… Electrode body, 112 …… Electrolyte, 114 …… Partition 120, casing, 202, ammeter, 204, current control circuit, 206, control unit, L, current line, Pp (Pp1 to Pp5), positive electrode terminal, Pn (Pn1) ~ Pn5) ... Negative electrode terminal.

Claims (6)

In a single housing, a positive current collector foil, a positive electrode material laminated on the positive current collector foil, a negative current collector foil, and a negative electrode laminated on the negative current collector foil A battery having a positive electrode terminal connected to the positive current collector foil and a negative electrode terminal connected to the negative current collector foil. And
At least one of the positive electrode terminal or the negative electrode terminal is provided in plural,
A plurality of ammeters each measuring a current flowing through the electrode terminals provided in plurality;
Based on the current value measured by the ammeter, comprising control means for individually controlling the amount of current flowing through the electrode terminal,
A battery characterized by that. The control means causes a maximum allowable current to flow through all the electrode terminals during initial energization of the battery, records the current value measured by each ammeter as an initial current value, and after the initial energization, Controlling the amount of current so that the current value measured by an ammeter is less than or equal to the initial current value;
The battery according to claim 1. The control means, the smaller the current value measured by the ammeter, the smaller the amount of current flowing through the corresponding electrode terminal,
The battery according to claim 1 or 2. The current collector foil and the electrode material on the side where the plurality of electrode terminals are provided are divided into a plurality of regions, and each of the divided current collector foils is provided with a single electrode terminal. Yes,
The battery according to any one of claims 1 to 3, wherein: When the difference between the current values between the adjacent electrode terminals is equal to or less than a predetermined value, the control means determines that a short circuit has occurred between the adjacent electrode terminals.
The battery according to any one of claims 1 to 4, wherein: When it is determined that the short circuit has occurred, the control means eliminates the short circuit by charging or discharging from the electrode terminal determined to have the short circuit.
The battery according to claim 5.

Images