KR20200018957A - Apparatus and method for balancing deterioration of battery - Google Patents

Abstract

The present invention relates to an apparatus and a method of battery degradation balancing which can effectively balance battery degradation in a process of balancing battery degradation of a plurality of battery modules provided in a battery pack. According to one embodiment of the present invention, a battery degradation balancing apparatus is an apparatus for balancing battery degradation of a plurality of battery modules provided in a battery pack to have one or more secondary batteries and electrically connected to each other in series. The battery degradation balancing apparatus comprises: a plurality of battery switches provided between each battery module to open and close an electrical pathway between each battery module; an anode terminal connection unit electrically connected to an anode terminal of the battery pack and selectively connected to the anode terminal of each battery module of the plurality of battery modules; a cathode terminal connection unit electrically connected to a cathode terminal of the battery pack and selectively connected to the cathode terminal of each battery module of the plurality of battery modules; and a processor configured to select two outermost battery modules which are outermost battery module in an order of series connection among the plurality of battery modules, deliver a command to open the electrical pathway to the battery switch provided between each outermost battery module, and selectively connect the anode terminal connection unit and the cathode terminal connection unit to anode and cathode terminals of the outermost battery modules, respectively.

Description

Battery deterioration balancing device and method {Apparatus and method for balancing deterioration of battery}

The present invention relates to a battery deterioration balancing apparatus and method, and more particularly, to a battery deterioration balancing apparatus and method capable of effectively balancing battery deterioration in a process of balancing battery deterioration of a plurality of battery modules provided in a battery pack. will be.

In recent years, as the demand for portable electronic products such as laptops, video cameras, mobile phones, and the like is rapidly increasing, and development of energy storage batteries, robots, satellites, and the like is in earnest, high-performance secondary batteries capable of repeating charging and discharging are available. Research is actively being conducted.

Commercially available secondary batteries include nickel cadmium batteries, nickel hydride batteries, nickel zinc batteries, and lithium secondary batteries. Among them, lithium secondary batteries have almost no memory effect compared to nickel-based secondary batteries, and thus are free of charge and discharge. It is attracting much attention because of its low self discharge rate and high energy density.

Batteries are used in various fields. In recent years, battery-intensive fields such as electric powered vehicles or smart grid systems often require large capacity. In order to increase the capacity of the battery pack, there may be a method of increasing the capacity of the secondary battery, that is, the battery cell itself. Has Thus, battery packs are typically widely used in which a plurality of battery modules are connected in series and in parallel.

A plurality of battery modules constituting the battery pack may have a difference in capacity performance between cells due to intrinsic characteristics, manufacturing environment differences, and versatility of system application over time. This causes a difference in the terminal voltage of the corresponding module or a difference in state of charge (SOC).

The difference is that when a plurality of battery modules having a difference in relative electrical characteristics are driven as one battery pack, the battery pack may be charged or discharged by the deteriorated specific battery module, and the battery pack may age. Problems such as overvoltage may occur.

In particular, when a large number of battery modules are connected in series, a problem is that the outermost battery module deteriorates faster than other battery modules in a serial connection order by charging or discharging a large amount of instantaneously or by repeating charging and discharging for a short time. there was.

The present invention has been made under the background of the prior art, and relates to an improved battery degradation balancing device and method that can effectively balance battery degradation in the process of balancing battery degradation of a plurality of battery modules provided in the battery pack. .

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. It will also be readily apparent that the objects and advantages of the present invention can be realized by the means and combinations thereof indicated in the claims.

Battery deterioration balancing device according to an embodiment of the present invention for achieving the above object, the battery deterioration of the plurality of battery modules provided in the battery pack having at least one secondary battery, and configured to be electrically connected in series with each other A device for balancing a plurality of battery switches provided between each battery module is configured to open and close the electrical path between each battery module; A positive terminal connection part electrically connected to the positive terminal of the battery pack, the positive terminal connecting part configured to be selectively connected to the positive terminal of each battery module among the plurality of battery modules; A negative terminal connection part electrically connected to the negative terminal of the battery pack, the negative terminal connecting part configured to be selectively connected to each negative terminal of each battery module among the plurality of battery modules; And selecting two outermost battery modules, which are the outermost ones in the serial connection order, of the plurality of battery modules, and transmitting a command to open an electrical path to the battery switches provided between the outermost battery modules. And a processor configured to selectively connect the positive terminal connection part and the negative terminal connection part to each positive terminal and the negative terminal of the outermost battery module.

The processor may further connect the positive terminal connecting portion to the positive terminal of the first outermost battery module of which the positive terminal is open, and the second negative terminal of the outermost battery module to be opened. It may be configured to connect the negative terminal connection to the negative terminal of the outermost battery module.

In addition, the processor may be configured to open the battery switch provided to directly connect between the outermost battery modules of the plurality of battery switches, and to close the remaining battery switches.

The processor may be configured to select, as the outermost battery module, two battery modules consecutively connected in series among the plurality of battery modules.

In addition, the plurality of battery modules may include a first battery module, a second battery module, and a third battery module, and a negative terminal of the first battery module may include a second battery module disposed between the battery switches. It may be electrically connected directly to the positive terminal, the negative terminal of the second battery module, may be electrically connected directly to the positive terminal of the third battery module with the battery switch between, the negative electrode of the third battery module The terminal may be configured to be electrically connected directly to the positive terminal of the first battery module with the battery switch interposed therebetween.

The processor may be configured to measure a connection time of the outermost battery module and select the outermost battery module based on a cumulative time of the connection time.

In addition, the battery pack according to an embodiment of the present invention includes a battery deterioration balancing device according to the present invention.

In addition, the battery degradation balancing method according to an embodiment of the present invention for achieving the above object, the battery pack is provided with one or more secondary batteries, and configured to be electrically connected in series with each other A method of balancing battery deterioration, the method comprising: selecting two outermost battery modules, the outermost ones of which are the outermost in series connection order of the plurality of battery modules; Opening the electrical path between the outermost battery modules; And a connecting step of selectively connecting the positive terminal and the negative terminal of the battery pack to each positive terminal and the negative terminal of the outermost battery module.

In the connecting step, the positive terminal of the battery pack is connected to the positive terminal of the first outermost battery module of which the positive terminal of the outermost battery module is opened, and the negative terminal of the outermost battery module is opened. The negative terminal of the battery pack may be connected to the negative terminal of the second outermost battery module.

In the selecting step, the connection time of the outermost battery module may be measured, and the outermost battery module may be selected based on the accumulated time of the connection time.

According to the present invention, in the configuration of changing the serial connection order of a plurality of battery modules, there is an advantage that the circuit configuration can be simplified and the number of switches can be reduced, so that the manufacture of the battery pack is easy and the size can be easily reduced. .

In addition, in the configuration of selecting the outermost battery module, by measuring the connection time, there is an advantage that can effectively select the outermost battery module.

In addition, in the configuration of changing the outermost battery module, there is an advantage that the structure of the wiring connecting the plurality of battery modules is simplified, and the speed of changing the serial connection order of the plurality of battery modules is increased.

In addition to the present invention may have a variety of other effects, such other effects of the present invention can be understood by the following description, it will be more clearly understood by the embodiments of the present invention.

The following drawings attached to this specification are illustrative of preferred embodiments of the present invention, and together with the detailed description of the invention to serve to further understand the technical spirit of the present invention, the present invention is a matter described in such drawings It should not be construed as limited to.
1 is a view schematically illustrating a configuration in which a battery deterioration balancing device according to an embodiment of the present invention is connected to some components of a battery pack.
2 is a perspective view schematically illustrating a configuration in which some components of the battery degradation balancing device according to an embodiment of the present invention are connected to a battery module.
3 to 5 are perspective views showing the operation configuration of the battery deterioration balancing device according to an embodiment of the present invention.
6 is a flowchart schematically illustrating a battery degradation balancing method according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the common or dictionary meanings, and the inventors should properly explain the concept of terms in order to best explain their own inventions. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical spirit of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

Throughout the specification, when a part is said to "include" a certain component, it means that it may further include other components, without excluding the other components unless otherwise stated. In addition, the term 'processor' described in the specification means a unit for processing at least one function or operation, which may be implemented in hardware or software, or a combination of hardware and software.

In addition, throughout the specification, when a part is "connected" to another part, it is not only "directly connected" but also "indirectly connected" with another element in between. Include.

In the present specification, the secondary battery means one independent cell having a negative electrode terminal and a positive electrode terminal and physically separable. For example, one pouch type lithium polymer cell may be regarded as a secondary battery.

The battery degradation balancing apparatus according to an embodiment of the present invention may be an apparatus for balancing battery degradation of the plurality of battery modules 10 included in the battery pack. Here, the battery pack may be provided in a vehicle. For example, the plurality of battery modules 10 may include one or more secondary batteries, and may be configured to be electrically connected to each other in series.

1 is a view schematically illustrating a configuration in which a battery deterioration balancing device according to an embodiment of the present invention is connected to some components of a battery pack.

Referring to FIG. 1, a battery deterioration balancing apparatus according to an exemplary embodiment of the present invention includes a plurality of battery switches 100, a positive terminal connecting part 210, a negative terminal connecting part 230, and a processor 300.

The plurality of battery switches 100 may be provided between each battery module 10. For example, as shown in the configuration of FIG. 1, when a plurality of battery modules 10 are connected in series, the battery switch 100 may be provided between two battery modules 10, respectively.

In addition, the plurality of battery switches 100 may open and close electrical paths between the battery modules 10. For example, as shown in the configuration of FIG. 1, the battery switch 100 may be provided between two battery modules 10 to open and close an electrical path between two battery modules 10.

The positive terminal connector 210 may be electrically connected to the positive terminal of the battery pack. For example, as illustrated in the configuration of FIG. 1, the positive terminal connection unit 210 may be electrically connected to the positive terminal of the battery pack, and may be electrically connected to the vehicle load 50. In addition, the positive terminal connecting portion 210 may be selectively connected to the positive terminal of each battery module 10 of the plurality of battery modules 10, respectively. For example, as shown in the configuration of FIG. 1, the connection terminal P of the positive terminal connection unit 210 is connected to one positive terminal of one of the positive terminals P1, P2, and P3 of each battery module 10. Can be connected.

The negative terminal connector 230 may be electrically connected to the negative terminal of the battery pack. For example, as shown in the configuration of FIG. 1, the negative terminal connecting portion 230 may be electrically connected to the negative terminal of the battery pack, and may be electrically connected to the vehicle load 50. In addition, the negative terminal connecting unit 230 may be selectively connected to the negative terminal of each battery module 10 of the plurality of battery modules 10, respectively. For example, as shown in the configuration of FIG. 1, the connection terminal N of the negative terminal connection unit 230 is connected to one negative terminal of the negative terminals N1, N2, and N3 of each battery module 10. Can be connected.

The processor 300 may be connected to a plurality of battery switches 100, a positive terminal connecting portion 210, and a negative terminal connecting portion 230 to transmit and receive electrical signals.

The processor 300 may select two outermost battery modules 10 that are the outermost in a serial connection order among the plurality of battery modules 10. For example, when three battery modules 10 are connected in series, the processor 300 transfers the first and third battery modules 10, which are the outermost in the serial connection order, to the outermost battery module 10. You can choose.

In addition, the processor 300 may transmit a command to open an electrical path to the battery switch 100 provided between the outermost battery modules 10. For example, when the first and third battery modules 10 are selected as the outermost battery modules 10 in the serial connection order among the three battery modules 10, the processor 300 may display the first in the serial connection order. The opening command may be transmitted to the battery switch 100 directly connecting between the first battery module 10 and the third battery module 10. In this case, the processor 300 may transmit a close command to the battery switch 100 directly connecting between the first battery module 10 and the second battery module 10 in the serial connection order. In addition, the processor 300 may transmit a close command to the battery switch 100 directly connecting between the second battery module 10 and the third battery module 10 in a serial connection order.

In addition, the processor 300 may selectively connect the positive terminal connecting portion 210 and the negative terminal connecting portion 230 to each positive terminal and the negative terminal of the outermost battery module 10. For example, when the first and third battery modules 10 are selected as the outermost battery modules 10 in the serial connection order among the three battery modules 10, the processor 300 may include the first battery module ( A positive terminal connecting portion 210 and a negative terminal connecting portion 230 may be connected to the positive terminal of the 10 and the negative terminal of the third battery module 10, respectively. For example, the processor 300 controls an opening / closing operation of a switch provided between the positive electrode terminal connector 210 and the negative electrode terminal connector 230, and the positive electrode terminal and the negative electrode terminal of each battery module 10. The positive terminal connecting portion 210 and the negative terminal connecting portion 230 may be selectively connected to each positive terminal and the negative terminal of the battery module 10.

Preferably, the battery degradation balancing apparatus according to an embodiment of the present invention may further include a memory device 400, as shown in the configuration of FIG.

The memory device 400 may be electrically connected to the processor 300 to transmit and receive electrical signals. In addition, the memory device 400 may store information necessary for the battery deterioration balancing device to operate in advance.

Meanwhile, the processor 300 may include a processor 300, an application-specific integrated circuit (ASIC), another chipset, a logic circuit, a register, a communication modem, and / or data known in the art in order to perform the above-described operation. It may be implemented in a form that optionally includes a processing device.

On the other hand, the memory device 400 is not particularly limited as long as it is a storage medium capable of recording and erasing information. For example, the memory device 400 may be a RAM, a ROM, a register, a hard disk, an optical recording medium, or a magnetic recording medium. The memory device 400 may also be electrically connected to the processor 300, for example, via a data bus or the like so as to be accessible by the processor 300, respectively. The memory device 400 may also store and / or update and / or erase and / or transmit a program including various control logics that the processor 300 performs, and / or data generated when the control logic is executed. have.

2 is a perspective view schematically illustrating a configuration in which some components of the battery deterioration balancing apparatus according to an embodiment of the present invention are connected to a battery module.

1 and 2, a battery degradation balancing apparatus according to an embodiment of the present invention may be an apparatus for balancing battery degradation of a plurality of battery modules.

The plurality of battery modules may include a first battery module 11, a second battery module 12, and a third battery module 13.

The negative terminal N1 of the first battery module 11 may be electrically connected directly to the positive terminal P2 of the second battery module 12 with the first battery switch 101 therebetween. In addition, the negative terminal N2 of the second battery module 12 may be electrically connected directly to the positive terminal P3 of the third battery module 13 with the second battery switch 102 interposed therebetween. In addition, the negative terminal N3 of the third battery module 13 may be electrically connected directly to the positive terminal P1 of the first battery module 11 with the third battery switch 103 therebetween.

Preferably, the battery deterioration balancing apparatus according to an embodiment of the present invention may include a connector, as shown in the configuration of FIG.

As shown in the configuration of FIG. 2, the connector may include an upper connector 510, a lower connector 530, and a motor 550.

The upper connector 510 may be equipped with a positive terminal connecting portion 210 and a negative terminal connecting portion 230. For example, as illustrated in the configuration of FIG. 2, the positive terminal connecting portion 210 and the negative terminal connecting portion 230 may be provided in the upper connector 510. For example, the positive terminal connecting portion 210 and the negative terminal connecting portion 230 may be mounted on the upper connector 510 to protrude in one direction of the upper connector 510.

For example, as illustrated in the configuration of FIG. 2, the positive electrode contact P ′ provided at one end of the positive electrode terminal connecting portion 210 may be provided to protrude in the other direction of the upper connector 510. Here, the positive electrode contact P 'may be electrically connected directly to the positive terminal of the battery pack. In addition, the connection terminal P provided at the other end of the positive terminal connecting portion 210 may protrude in the direction of the lower connector 530.

In addition, the negative electrode contact N ′ provided at one end of the negative electrode terminal connector 230 may be provided to protrude in the other direction of the upper connector 510. Here, the negative electrode contact N 'may be electrically connected directly to the negative terminal of the battery pack. In addition, the connection terminal N provided at the other end of the negative terminal connecting portion 230 may protrude in the direction of the lower connector 530.

In addition, the anode contact P ', the cathode contact N', and the connection terminals P and N may be made of an electrically conductive material.

The lower connector 530 may be provided between the upper connector 510 and the terminals P1, P2, P3, N1, N2, and N3 of each battery module. In addition, the lower connector 530 may be equipped with contacts P1 ', P2', P3 ', N1', N2 ', and N3' configured to be electrically connected to terminals of each battery module. For example, as illustrated in the configuration of FIG. 2, each contact P1 ′, P2 ′, P3 ′, N1 ′, N2 ′, N3 ′ provided in the lower connector 530 may be connected to each terminal of the battery module. P1, P2, P3, N1, N2, and N3) may be connected one-to-one, respectively. In addition, each of the contacts P1 ', P2', P3 ', N1', N2 ', and N3' provided in the lower connector 530 may protrude in the direction of the upper connector 510. In addition, each of the contacts P1 ', P2', P3 ', N1', N2 ', and N3' provided in the lower connector 530 may be made of an electrically conductive material.

The motor 550 may be mounted on the upper connector 510. For example, as shown in the configuration of FIG. 2, the motor 550 may be mounted on one side of the upper connector 510. In addition, the motor 550 may move the upper connector 510 in one direction. For example, in the configuration of FIG. 2, the motor 550 can rotate the upper connector 510 clockwise or counterclockwise. In addition, the motor 550 may be connected to the processor 300 to transmit and receive electrical signals. In this case, the processor 300 may control an operation of the motor 550 by transmitting a command to the motor 550.

Preferably, the processor 300 according to an embodiment of the present invention connects the positive electrode terminal connecting portion 210 to the positive terminal of the first outermost battery module, the positive terminal of the outermost battery module is open, The negative terminal connection part 230 may be connected to the negative terminal of the second outermost battery module in which the negative terminal of the outer battery module is open.

For example, in the configuration of FIG. 2, the processor 300 may select the first battery module 11 and the second battery module 12 as the outermost battery module. In addition, the processor 300 may connect the positive electrode terminal 210 to the positive terminal P2 of the second battery module 12 in which the positive terminal of the first battery module 11 and the second battery module 12 is open. You can connect In addition, the processor 300 may connect the negative terminal connection part 230 to the negative terminal N1 of the first battery module 11 in which the negative terminal of the first battery module 11 and the second battery module 12 is open. Can be connected. In this case, in the configuration of FIG. 2, the processor 300 rotates the upper connector 510 in a clockwise direction through the motor 550 so that the connection terminals N and P are connected to the contacts N1 ′ of the lower connector 530. , P2 '). In addition, the connection terminals N and P may be coupled to the contacts N1 ′ and P2 ′ of the lower connector 530. For example, when the connection terminals N and P face the contacts N1 'and P2', the connection terminals N and P and the contacts N1 'and P2' may be electrically coupled, respectively.

More preferably, the processor 300 according to an embodiment of the present invention opens a battery switch provided to directly connect between the outermost battery modules of the plurality of battery switches, and closes the remaining battery switches. Can be.

For example, in the configuration of FIG. 2, the processor 300 may select the first battery module 11 and the second battery module 12 as the outermost battery module. In addition, the processor 300 may open the first battery switch 101 provided to directly connect the first battery module 11 and the second battery module 12. Subsequently, the processor 300 may close the second battery switch 102 and the third battery switch 103 except for the first battery switch 101.

Through such a configuration, the battery deterioration balancing apparatus according to the exemplary embodiment of the present invention may effectively change the serial connection order of the plurality of battery modules. In addition, since the serial connection order of the plurality of battery modules can be effectively changed without complicated circuit configuration, the number of switches can be effectively reduced.

Preferably, the processor 300 according to an embodiment of the present invention may select two battery modules consecutively connected in series among the plurality of battery modules as the outermost battery module.

For example, as shown in the configuration of FIG. 2, when three battery modules are connected in series, the processor 300 may connect the first battery module 11 and the second battery module 12 to the outermost battery module. Can be selected. In addition, the processor 300 may select the second battery module 12 and the third battery module 13 as the outermost battery module. In addition, the processor 300 may select the first battery module 11 and the third battery module 13 as the outermost battery module.

Through such a configuration, the battery deterioration balancing apparatus according to an embodiment of the present invention can effectively change the serial connection order of a plurality of battery modules without complicated circuit configuration by selecting two adjacent battery modules as the outermost battery module. have.

Preferably, the processor 300 according to an embodiment of the present invention may measure the connection time of the outermost battery module and select the outermost battery module based on the accumulated time of the connection time.

For example, in the configuration of FIG. 2, the processor 300 may select the first battery module 11 and the second battery module 12 as the outermost battery module. In addition, the processor 300 may measure a connection time between the first battery module 11 and the second battery module 12 as the outermost battery module. In addition, the processor 300 may store the connection time in the memory device 400. In addition, the processor 300 may calculate the total accumulated time of the connection time of each battery module based on the connection time stored in the memory device 400. In addition, the processor 300 may select the outermost battery module based on the accumulated time. For example, the processor 300 may select a battery module having a minimum accumulation time among the plurality of battery modules as the outermost battery module.

Through such a configuration, the battery deterioration balancing apparatus according to the exemplary embodiment of the present invention has the effect of effectively balancing the deterioration of a plurality of battery modules to extend the life of the battery pack.

3 to 5 are perspective views showing the operation configuration of the battery deterioration balancing device according to an embodiment of the present invention. In addition, in the present embodiment, a detailed description of parts to which the description of the above embodiments may be similarly applied will be omitted, and description will be given focusing on differences.

First, referring to FIG. 3, the processor 300 according to an embodiment of the present invention may select the first battery module 11 and the second battery module 12 as the outermost battery module. In addition, the processor 300 may open the first battery switch 101 and close the second battery switch 102 and the third battery switch 103. In addition, the processor 300 may rotate the upper connector 510 through the motor 550 so that the positive terminal connecting portion 210 and the negative terminal connecting portion 230 each have a positive terminal P2 of the second battery module 12. And a negative terminal N1 of the first battery module 11. In this case, the three battery modules may be connected in series to the second battery module 12, the third battery module 13, and the first battery module 11.

Subsequently, referring to FIG. 4, the processor 300 according to an exemplary embodiment may select the second battery module 12 and the third battery module 13 as the outermost battery module. In addition, the processor 300 may open the second battery switch 102 and close the first battery switch 101 and the third battery switch 103. In addition, the processor 300 rotates the upper connector 510 through the motor 550 so that the positive terminal connecting portion 210 and the negative terminal connecting portion 230 are the positive terminal P3 of the third battery module 13, respectively. And a negative terminal N2 of the second battery module 12. In this case, the three battery modules may be serially connected in the order of the third battery module 13, the first battery module 11, and the second battery module 12.

Subsequently, referring to FIG. 5, the processor 300 according to an exemplary embodiment may select the first battery module 11 and the third battery module 13 as the outermost battery module. In addition, the processor 300 may open the third battery switch 103 and close the first battery switch 101 and the second battery switch 102. In addition, the processor 300 may rotate the upper connector 510 through the motor 550 so that the positive terminal connecting portion 210 and the negative terminal connecting portion 230 each have a positive terminal P1 of the first battery module 11. And a negative terminal N3 of the third battery module 13. In this case, the three battery modules may be connected in series to the first battery module 11, the second battery module 12, and the third battery module 13.

In addition, the battery deterioration balancing apparatus according to the present invention may be provided in the battery pack. That is, the battery pack according to the present invention may include the battery deterioration balancing device according to the present invention described above. Here, the battery pack may include one or more secondary batteries, the battery deterioration balancing device, an electronic device (with a BMS, a relay, a fuse, etc.), a case, and the like.

6 is a flowchart schematically illustrating a battery degradation balancing method according to an embodiment of the present invention. In FIG. 6, the performing agent of each step may be referred to as each component of the battery deterioration balancing apparatus according to the present invention described above.

As shown in FIG. 6, the battery degradation balancing method according to the present invention includes a selection step S100, an opening step S110, and a connection step S120.

First, in the selection step S100, two outermost battery modules, which are the outermost in a serial connection order, may be selected among the plurality of battery modules. Subsequently, in the opening step S110, an electrical path between the outermost battery modules may be opened. Subsequently, in the connecting step S120, the positive terminal and the negative terminal of the battery pack may be selectively connected to each positive terminal and the negative terminal of the outermost battery module.

Preferably, in the connecting step (S120) according to an embodiment of the present invention, the positive terminal of the battery pack is connected to the positive terminal of the first outermost battery module, the positive terminal of the outermost battery module is open, The negative terminal of the battery pack may be connected to the negative terminal of the second outermost battery module in which the negative terminal of the outer battery module is opened.

Preferably, in the selection step (S100) according to an embodiment of the present invention, the connection time of the outermost battery module may be measured, and the outermost battery module may be selected based on the accumulated time of the connection time.

In addition, when the control logic is implemented in software, the processor may be implemented in a set of program modules. In this case, the program module may be stored in the memory device and executed by the processor.

In addition, various control logics of the processor may be combined with at least one, and the combined control logics may be written in a computer readable code system so that the computer readable access is not limited in kind. In one example, the recording medium includes at least one selected from the group consisting of a ROM, a RAM, a register, a CD-ROM, a magnetic tape, a hard disk, a floppy disk, and an optical data recording device. In addition, the code system may be distributed and stored and executed in a networked computer. In addition, functional programs, code, and segments for implementing the combined control logics can be easily inferred by programmers in the art to which the present invention pertains.

In the present specification, terms indicating directions such as up, down, left, right, before, and after are used, but these terms are merely for convenience of description and may vary depending on the location of the object or the location of the observer. It will be apparent to those skilled in the art that the present invention can be made.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto and is intended by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

10: battery module
11: first battery module
12: second battery module
13: third battery module
50: vehicle load
100: battery switch
101: first battery switch
102: second battery switch
103: third battery switch
210: positive terminal connection
230: negative terminal connection
300: processor
400: memory device
510: top connector
530: lower connector
550: motor

Claims (10)

An apparatus for balancing battery deterioration of a plurality of battery modules provided in a battery pack and having at least one secondary battery and configured to be electrically connected in series with each other,
A plurality of battery switches provided between each battery module and configured to open and close an electrical path between each battery module;
A positive terminal connection part electrically connected to the positive terminal of the battery pack, the positive terminal connecting part configured to be selectively connected to the positive terminal of each battery module among the plurality of battery modules;
A negative terminal connection part electrically connected to the negative terminal of the battery pack, the negative terminal connecting part configured to be selectively connected to each negative terminal of each battery module among the plurality of battery modules; And
Selecting the two outermost battery modules, which are the outermost in the serial connection order, of the plurality of battery modules, and transmitting a command to open an electrical path to the battery switches provided between the outermost battery modules; A processor configured to selectively connect the positive terminal connection part and the negative terminal connection part to respective positive and negative terminals of an outer battery module;
Battery deterioration balancing device comprising a.
The method of claim 1,
The processor is configured to connect the positive terminal connection portion to a positive terminal of the first outermost battery module in which the positive terminal of the outermost battery module is opened, and the second outermost battery in which the negative terminal of the outermost battery module is open. Battery deterioration balancing device, characterized in that configured to connect the negative terminal connection to the negative terminal of the battery module.
The method of claim 2,
And the processor is configured to open the battery switch provided to directly connect between the outermost battery modules of the plurality of battery switches, and close the remaining battery switches.
The method of claim 1,
And the processor is configured to select, as the outermost battery module, two battery modules consecutively connected in series among the plurality of battery modules.
The method of claim 1,
The plurality of battery modules include a first battery module, a second battery module, and a third battery module,
The negative terminal of the first battery module may be electrically connected directly to the positive terminal of the second battery module with the battery switch interposed therebetween.
The negative terminal of the second battery module may be electrically connected directly to the positive terminal of the third battery module with the battery switch interposed therebetween.
The negative electrode terminal of the third battery module, the battery degradation balancing device, characterized in that configured to be electrically connected directly to the positive terminal of the first battery module with the battery switch therebetween.
The method of claim 1,
And the processor is configured to measure a connection time of the outermost battery module and select the outermost battery module based on a cumulative time of the connection time.
A battery pack comprising a battery deterioration balancing device according to any one of claims 1 to 6.
A method of balancing battery deterioration of a plurality of battery modules provided in a battery pack and having at least one secondary battery and configured to be electrically connected in series with each other,
Selecting two outermost battery modules, the outermost battery modules being the outermost in a serial connection order of the plurality of battery modules;
Opening the electrical path between the outermost battery modules; And
A connection step of selectively connecting the positive terminal and the negative terminal of the battery pack to each positive terminal and the negative terminal of the outermost battery module;
Battery degradation balancing method comprising a.
The method of claim 8,
The connecting step may include connecting the positive terminal of the battery pack to the positive terminal of the first outermost battery module of which the positive terminal of the outermost battery module is opened, and the negative terminal of the outermost battery module to be opened; 2. The battery deterioration balancing method of connecting the negative terminal of the battery pack to the negative terminal of the outermost battery module.
The method of claim 8,
The selecting step may include measuring a connection time of the outermost battery module and selecting the outermost battery module based on a cumulative time of the connection time.

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