CN211701525U - Device for balancing lithium battery pack - Google Patents
Device for balancing lithium battery pack Download PDFInfo
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- CN211701525U CN211701525U CN201922479729.2U CN201922479729U CN211701525U CN 211701525 U CN211701525 U CN 211701525U CN 201922479729 U CN201922479729 U CN 201922479729U CN 211701525 U CN211701525 U CN 211701525U
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- lithium battery
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Abstract
The utility model relates to the technical field of new energy batteries, and discloses a device for balancing a lithium battery pack, so as to reduce the welding process and the welding time of the lithium battery pack and improve the assembly efficiency; the utility model discloses a device for balanced lithium cell group, including treating balanced lithium cell group, still include: the lithium battery pack comprises a collection equalization module, a protection board and a connection module, wherein the collection equalization module and the protection board are connected with the lithium battery pack, and the connection module is used for connecting the collection equalization module and the protection board.
Description
Technical Field
The utility model relates to a new energy battery technical field especially relates to a device for balanced lithium cell group.
Background
In the application of new energy batteries, the consistency change of the lithium battery pack is a continuously accumulated process, and the longer the application time is, the larger the difference generated among the single batteries is. Meanwhile, the use environment causes the uniformity difference among the single batteries. Therefore, controlling the uniformity of the cells is a key technology affecting the life of the battery pack.
In the prior art, design a connector usually on the shell of lithium cell group, then with the pencil be connected to the connector to the positive and negative pole of each cluster of battery cell of lithium cell group, again through the connector on the shell of lithium cell group, be connected to on the outside balanced appearance, like this, regularly to the lithium cell group carry out the equilibrium, can reduce the difference of each cluster battery cell in the lithium cell group, improve the uniformity of battery cell in the lithium cell group, and then improve the life of lithium cell group. However, because of the need for the intra-battery BMS to manage and protect each string of cells, the BMS is also connected to the positive and negative electrodes of each string of cells of the lithium battery pack using wire harnesses. Therefore, two lines of wires need to be led out from the same tab of the single battery, one line of the wires is connected to the protection plate, and the other line of the wires is connected to the balanced connector of the shell, so that the welding process is increased, the welding time is prolonged, and the assembly efficiency is influenced.
Therefore, how to reduce the welding process and the welding time of the lithium battery pack and improve the assembly efficiency becomes a problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a device for balanced lithium cell group can reduce the welding process and the weld time of lithium cell group, promotes the packaging efficiency, and convenient to use implements simply.
In order to achieve the above object, the present invention provides a device for balancing lithium battery pack, including treating balanced lithium battery pack, further comprising: the lithium battery pack comprises a collection equalization module, a protection board and a connection module, wherein the collection equalization module is connected with the lithium battery pack, and the connection module is used for connecting the collection equalization module with the protection board.
Preferably, the acquisition equalization module comprises an equalizer and at least 3 interfaces.
Preferably, the acquisition balancing module comprises a balancing instrument, a BMS interface, an external balancing interface and a battery pack interface;
the BMS interface is used for connecting each single battery of the lithium battery pack to a protection board;
the external equalization interface is used for connecting the lithium battery pack and the equalizer;
the battery pack interface is used for connecting the positive and negative electrode tabs of each single battery of the lithium battery pack, wherein each single battery is provided with an independent loop.
Preferably, the connection module includes a first wire harness, a first connector connected to one end of the first wire harness, a second connector connected to one end of the second wire harness, a third connector connected to the other end of the second wire harness, a fourth connector connected to the first end of the acquisition and equalization module, a fifth connector connected to the second end of the acquisition and equalization module, a sixth connector connected to the third end of the acquisition and equalization module, a seventh connector connected to one end of the protection board, and an eighth connector connected to the equalization instrument;
each wire of the other end of the first wire harness is connected with the tab of each lithium battery in the lithium battery pack to be equalized respectively, the first connector is connected with the fourth connector, the second connector is connected with the fifth connector, the third connector is connected with the seventh connector, and the sixth connector is connected with the eighth connector.
The utility model discloses following beneficial effect has:
the utility model provides a device for equalizing lithium battery pack, which comprises an acquisition equalizing module, a protection board and a connecting module for connecting the acquisition equalizing module and the protection board; the device for balancing the lithium battery pack can reduce the welding process and the welding time of the lithium battery pack, improves the assembly efficiency, is convenient to use and is simple to implement.
The present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
fig. 1 is a schematic structural view of an apparatus for equalizing a lithium battery pack according to a preferred embodiment of the present invention;
fig. 2 is a schematic diagram of the acquisition equalizer module according to the preferred embodiment of the present invention.
Reference numerals:
10. a tab; 11. a lithium battery pack; 20. a first wire harness; 21. a first connector; 30. a collection balancing module; 31. a fourth connector; 32. a sixth connector; 33. a fifth connector; 40. a second wire harness; 41. a second connector; 42. a third connector; 50. a protection plate; 51. a seventh connector; 60. a balancing instrument; 61. and an eighth connector.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
As shown in fig. 1, the present embodiment provides an apparatus for equalizing a lithium battery pack, including: the collecting and equalizing module 30, the protection board 50 and the connecting module for connecting the collecting and equalizing module 30 and the protection board 50.
In this embodiment, the model that the protection shield adopted is DJJ01-48V, and it should be noted that, the utility model discloses do not limit the concrete model of protection shield, under the purpose that can reach the same effect, the model of protection shield still can set up to other models, for example DJJ01-60V or DJJ 01-72V.
As a preferred embodiment of this embodiment, the acquisition and equalization module 30 includes an equalizer and at least 3 interfaces. As shown in fig. 2, in the present embodiment, the acquisition balancing module 30 includes a balancing instrument, a BMS interface, an external balancing interface, and a battery pack interface; specifically, in the present embodiment, the BMS interface connects each of the unit cells of the lithium battery pack to the protection board 50, so that the protection board 50 can detect the voltage of each of the unit cells and perform a corresponding process. The external equalization interface is connected with the lithium battery pack to the equalization instrument, so that the equalization instrument can charge or discharge each single battery in the lithium battery pack independently at currents of different sizes. The battery pack interface is connected to the positive and negative tabs of each cell of the battery pack, wherein each cell has an independent loop. It should be noted that the present balance is a commercially available part.
The device connects each single battery of the battery pack with the protection board 50 and the balancing instrument. The collection of the voltage of the single body of the protection board can be realized. Therefore, the single batteries of the battery pack are balanced, and the consistency of the battery pack is improved.
As a preferred embodiment of the present embodiment, the connection module includes a first harness 20, a first connector 21 connected to one end of the first harness 20, a second harness 40, a second connector 41 connected to one end of the second harness 40, a third connector 42 connected to the other end of the second harness 40, a fourth connector 31 connected to the first end of the acquisition and equalization module 30, a fifth connector 33 connected to the second end of the acquisition and equalization module 30, a sixth connector 32 connected to the third end of the acquisition and equalization module 30, a seventh connector 51 connected to one end of the protection plate 50, and an eighth connector 61 connected to the equalization instrument 60.
Each lead at the other end of the first harness 20 is connected to a tab 10 of each lithium battery in the lithium battery pack 11 to be equalized, the first connector 21 is connected to the fourth connector 31, the second connector 41 is connected to the fifth connector 33, the third connector 42 is connected to the seventh connector 51, and the sixth connector 32 is connected to the eighth connector 61.
Foretell a device for balanced lithium cell group has integrateed and has gathered balanced module 30 and protection shield 50 to be equipped with a plurality of pencil and connector and connect, can reduce the welding process and the welding time of lithium cell group, promote the packaging efficiency, convenient to use, implement simply.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. An apparatus for equalizing a lithium battery pack, comprising a lithium battery pack to be equalized, characterized by further comprising: the lithium battery pack comprises a collection equalization module, a protection board and a connection module, wherein the collection equalization module is connected with the lithium battery pack, and the connection module is used for connecting the collection equalization module with the protection board.
2. The apparatus for equalizing lithium battery packs according to claim 1, wherein the acquisition equalization module comprises an equalizer and at least 3 interfaces.
3. The apparatus for equalizing lithium battery packs according to claim 1 or 2, wherein the acquisition equalization module comprises an equalizer, a BMS interface, an external equalization interface, and a battery pack interface;
the BMS interface is used for connecting each single battery of the lithium battery pack to a protection board;
the external equalization interface is used for connecting the lithium battery pack and the equalizer;
the battery pack interface is used for connecting the positive and negative electrode tabs of each single battery of the lithium battery pack, wherein each single battery is provided with an independent loop.
4. The device for equalizing lithium battery packs of claim 1, wherein the connection module comprises a first harness, a first connector connected to one end of the first harness, a second connector connected to one end of the second harness, a third connector connected to the other end of the second harness, a fourth connector connected to the first end of the acquisition equalization module, a fifth connector connected to the second end of the acquisition equalization module, a sixth connector connected to the third end of the acquisition equalization module, a seventh connector connected to one end of the protection board, and an eighth connector connected to an equalization instrument;
each wire of the other end of the first wire harness is connected with the tab of each lithium battery in the lithium battery pack to be equalized respectively, the first connector is connected with the fourth connector, the second connector is connected with the fifth connector, the third connector is connected with the seventh connector, and the sixth connector is connected with the eighth connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922479729.2U CN211701525U (en) | 2019-12-31 | 2019-12-31 | Device for balancing lithium battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922479729.2U CN211701525U (en) | 2019-12-31 | 2019-12-31 | Device for balancing lithium battery pack |
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| Publication Number | Publication Date |
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| CN211701525U true CN211701525U (en) | 2020-10-16 |
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| CN201922479729.2U Active CN211701525U (en) | 2019-12-31 | 2019-12-31 | Device for balancing lithium battery pack |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113131569A (en) * | 2021-04-06 | 2021-07-16 | 辽宁凯信新能源技术有限公司 | Equalizing method of rechargeable battery |
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2019
- 2019-12-31 CN CN201922479729.2U patent/CN211701525U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113131569A (en) * | 2021-04-06 | 2021-07-16 | 辽宁凯信新能源技术有限公司 | Equalizing method of rechargeable battery |
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