CN223124126U - Battery cell connection structure and battery pack - Google Patents
Battery cell connection structure and battery packInfo
- Publication number
- CN223124126U CN223124126U CN202422131694.4U CN202422131694U CN223124126U CN 223124126 U CN223124126 U CN 223124126U CN 202422131694 U CN202422131694 U CN 202422131694U CN 223124126 U CN223124126 U CN 223124126U
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- cell
- insulating plate
- battery
- plate
- conductive
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
本申请公开了一种电芯连接结构和电池包，该电芯连接结构，用于连接相邻两个电芯的极柱，包括第一绝缘板、第二绝缘板、导电柱、第三导电板和弹性件；第一绝缘板设有第一通孔，第二绝缘板设有第二通孔，第三导电板固设于第二绝缘板远离第一绝缘板的一侧，并位于第二通孔的开口处；导电柱的一端贯穿第一通孔并与第一绝缘板固定连接，另一端插入第二通孔并与第三导电板滑动连接；弹性件套设于导电柱外部，弹性件的一端与第一绝缘板连接，另一端与第二绝缘板连接，用于为第二绝缘板提供远离第一绝缘板的作用力。上述电芯连接结构可实现相邻电芯极柱的电连接，且本申请的极柱连接方式无需焊接，有望实现电芯的横置。
The present application discloses a battery cell connection structure and a battery pack, the battery cell connection structure is used to connect the poles of two adjacent battery cells, including a first insulating plate, a second insulating plate, a conductive column, a third conductive plate and an elastic member; the first insulating plate is provided with a first through hole, the second insulating plate is provided with a second through hole, the third conductive plate is fixedly arranged on the side of the second insulating plate away from the first insulating plate, and is located at the opening of the second through hole; one end of the conductive column passes through the first through hole and is fixedly connected to the first insulating plate, and the other end is inserted into the second through hole and is slidably connected to the third conductive plate; the elastic member is sleeved on the outside of the conductive column, one end of the elastic member is connected to the first insulating plate, and the other end is connected to the second insulating plate, which is used to provide the second insulating plate with a force away from the first insulating plate. The above-mentioned battery cell connection structure can realize the electrical connection of adjacent battery cell poles, and the pole connection method of the present application does not require welding, and is expected to realize the horizontal placement of the battery cell.
Description
Technical Field
The application relates to the technical field of power batteries, in particular to a battery core connecting structure and a battery pack.
Background
The cell structure in a power battery system determines the design and assembly principles of the battery system. At present, the battery core generally adopts a mode of outputting pole posts at two ends or the same side, and the existence of the pole posts can influence the welding of the bus bars. Currently, in order to realize the connection between the battery cells, aluminum bus bar components are generally adopted to weld the poles of the two battery cells. The battery cell pole is limited by the influence of welding equipment, and can only face to the outer side, and can not be shielded, namely, the battery cell and the battery cell can only be connected in a vertical placement mode, so that the head-to-tail connection of the battery cell can not be realized, and further, the battery cell can not be placed in a lying state, and the thermal management effect of the battery is influenced.
Disclosure of utility model
The application discloses a battery core connecting structure and a battery pack, which are beneficial to realizing connection between battery cores by respectively connecting the battery core connecting structure with a positive pole post and a negative pole post of adjacent battery cores, and hopefully realizing transverse arrangement of the battery cores, thereby being beneficial to improving the heat dissipation effect.
In order to achieve the above purpose, the present application provides the following technical solutions:
In a first aspect, the present application provides a battery core connection structure, configured to connect terminal posts of two adjacent battery cores, including a first insulating plate, a second insulating plate, a conductive post, a third conductive plate, and an elastic member;
The first insulating plate is provided with a first through hole, the second insulating plate is provided with a second through hole, and the third conducting plate is fixedly arranged on one side of the second insulating plate far away from the first insulating plate and is positioned at the opening of the second through hole;
The elastic piece is sleeved outside the conductive column, one end of the elastic piece is connected with the first insulating plate, and the other end of the elastic piece is connected with the second insulating plate and used for providing acting force far away from the first insulating plate for the second insulating plate.
According to the battery core connecting structure, through the arrangement of the first insulating plate, the second insulating plate, the elastic piece, the conductive column with the conductive effect and the third conductive plate, the electric connection of the adjacent battery core electrode columns is realized, welding is not needed in the electrode column connecting mode, transverse arrangement of the battery core is hopefully realized, and the heat dissipation efficiency of the battery core is improved. Specifically, one end of the conductive column of the cell connecting structure penetrates through the first through hole and is fixedly connected with the first insulating plate, the other end of the conductive column is inserted into the second through hole and is in sliding connection with the third conductive plate, and the relative positions of the conductive column and the third conductive plate are adjusted through the elastic piece arranged between the first insulating plate and the second insulating plate, so that the conductive column and the third conductive plate are fully contacted with the cell electrode column when the cell connecting structure is used for connecting adjacent cells, and good conductive effect is achieved. In addition, the first insulating plate and the second insulating plate are beneficial to avoiding the short circuit condition caused by direct contact of the top covers of the adjacent cells.
In some embodiments, the conductive post includes a plug portion disposed on a side of the conductive post facing away from the first insulating plate, and the plug portion is slidably connected to the third conductive plate.
In some embodiments, the cell connection structure further includes an insulating sleeve, the insulating sleeve is sleeved outside the conductive column and between the conductive column and the elastic member, one end of the insulating sleeve is inserted into the first through hole, and the other end of the insulating sleeve is inserted into the second through hole.
In some embodiments, the first insulating plate, the second insulating plate, and the insulating sleeve are made of plastic.
In some embodiments, the conductive posts and the third conductive plate are made of metal.
In some embodiments, the resilient member is a spring.
In a second aspect, the present application provides a battery pack comprising at least one layer of cell assemblies, each layer of cell assemblies comprising at least one row of cell chains, each row of cell chains comprising at least two cells, any two adjacent cells being electrically connected by a cell connection structure as described in the first aspect;
In any one row of the battery cell chains, the arrangement direction of the at least two battery cells is perpendicular to the thickness direction of the battery cells.
In some embodiments, the battery cell includes a positive electrode column and a negative electrode column which are oppositely arranged along the width direction of the battery cell, in any two adjacent battery cells, the first insulating plate of the battery cell connecting structure is in contact connection with one battery cell, the second insulating plate of the battery cell connecting structure is in contact connection with the other battery cell, the conductive column of the battery cell connecting structure is electrically connected with the positive electrode column or the negative electrode column of one battery cell, and the third conductive plate of the battery cell connecting structure is electrically connected with the negative electrode column or the positive electrode column of the other battery cell.
In some embodiments, when the cell assembly includes multiple rows of cell chains, the battery pack further includes a buss bar;
In any two adjacent rows of the cell chains, one end of the busbar is connected with one cell in one row of the cell chains, and the other end of the busbar is connected with one cell in the other row of the cell chains.
In some embodiments, the battery pack further comprises a liquid cooling plate;
when the battery pack comprises a layer of the battery cell assembly, the liquid cooling plate is in contact connection with the battery cell assembly;
When the battery pack comprises a plurality of layers of the battery cell assemblies, the liquid cooling plate is arranged between any two adjacent layers of the battery cell assemblies and is in contact connection with the two layers of the battery cell assemblies.
Drawings
Fig. 1 is a schematic structural diagram of a connection structure of a battery cell according to an embodiment of the present application;
fig. 2 is a schematic perspective view of a connection structure of a battery cell according to an embodiment of the present application;
fig. 3 is a schematic side view of a battery cell connection structure according to an embodiment of the present application;
fig. 4 is a schematic front view of a battery core connection structure according to an embodiment of the present application;
fig. 5 is a schematic top view of a connection structure of a battery cell according to an embodiment of the present application;
Fig. 6 is a schematic structural diagram of a battery cell assembly according to an embodiment of the present application;
Fig. 7 is a schematic structural diagram of a battery pack according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a battery pack according to an embodiment of the present application;
The icon comprises a first insulating plate, a second insulating plate, a conductive column, a third conductive plate, an elastic piece, a first through hole, a second through hole, a plugging part, an insulating sleeve, a battery cell assembly, a battery cell chain, a battery cell, a bus bar, a liquid cooling plate and a liquid cooling plate.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application. In the description of the embodiment of the present application, unless otherwise indicated, "/" means or, for example, a/B may represent a or B, and "and/or" in the text is merely an association relationship describing an association object, which means that three relationships may exist, for example, a and/or B, and that three cases of a alone, a and B together, and B alone exist, and further, in the description of the embodiment of the present application, "a plurality" means two or more.
Wherein the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as implying or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature, and in the description of embodiments of the application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In a first aspect, as shown in fig. 1 to 5, the present application provides a cell connection structure for connecting the poles of two adjacent cells, including a first insulating plate 1, a second insulating plate 2, a conductive pole 3, a third conductive plate 4 and an elastic member 5;
The first insulating plate 1 is provided with a first through hole A, the second insulating plate 2 is provided with a second through hole B, and the third conducting plate 4 is fixedly arranged on one side of the second insulating plate 2 far away from the first insulating plate 1 and is positioned at the opening of the second through hole B;
The elastic piece 5 is sleeved outside the conductive column 3, one end of the elastic piece 5 is connected with the first insulating plate 1, and the other end of the elastic piece is connected with the second insulating plate 2 and is used for providing acting force far away from the first insulating plate 1 for the second insulating plate 2.
According to the battery core connecting structure, through the arrangement of the first insulating plate 1, the second insulating plate 2, the elastic piece 5, the conductive column 3 with the conductive effect and the third conductive plate 4, the electric connection of the adjacent battery core electrode columns can be realized, welding is not needed in the electrode column connecting mode, transverse arrangement of the battery core is hopefully realized, and the heat dissipation efficiency of the battery core is improved. Specifically, as shown in fig. 1, one end of a conductive post 3 of the cell connection structure of the present application penetrates through a first through hole a and is fixedly connected with a first insulating plate 1, and the other end is inserted into a second through hole B and is slidably connected with a third conductive plate 4, and the relative positions of the conductive post 3 and the third conductive plate 4 are adjusted through an elastic member 5 arranged between the first insulating plate 1 and a second insulating plate 2, so that when the cell connection structure is used for connecting adjacent cells, the conductive post 3 and the third conductive plate 4 are fully contacted with the cell post, and good conductive effect is achieved. In addition, the first insulating plate 1 and the second insulating plate 2 are favorable for avoiding the short circuit condition caused by direct contact of the top covers of the adjacent cells, and meanwhile, the elastic piece 5 can be fixedly connected with the first insulating plate 1 and the second insulating plate 2, so that the structural stability of the cell connecting structure is improved. It should be noted that, one end of the conductive post 3 near the first insulating plate 1 needs to partially protrude out of the first through hole a to realize the electrical connection between the conductive post 3 and the polar post. The third conductive plate 4 may also be disposed inside the second through hole B, and partially protrudes out of the second through hole B, so as to electrically connect the third conductive plate 4 and the post.
In some embodiments, the conductive post 3 includes a plug portion 6, the plug portion 6 is disposed on a side of the conductive post 3 facing away from the first insulating plate 1, and the plug portion 6 is slidably connected to the third conductive plate 4.
In a possible implementation, as shown in fig. 1, the plug portion 6 of the conductive post 3 is partially inserted into the third conductive plate 4 and slidingly connected to the third conductive plate 4. When the elastic piece 5 between the first insulating plate 1 and the second insulating plate 2 contracts or extends, the distance between the first insulating plate 1 and the second insulating plate 2 can be changed under the extrusion action of the elastic piece 5, so that the length of the plugging part 6 inserted into the third conductive plate 4 can be correspondingly adjusted, and the conductive column 3 and the third conductive plate 4 can be fully contacted with the electric core pole column to play a role of a conductor.
In some embodiments, the cell connection structure further includes an insulating sleeve 7, where the insulating sleeve 7 is sleeved outside the conductive post 3 and between the conductive post 3 and the elastic member 5, and one end of the insulating sleeve 7 is inserted into the first through hole a, and the other end is inserted into the second through hole B.
In a possible implementation manner, as shown in fig. 3, the conductive column 3 is further sleeved with an insulating sleeve 7, and two ends of the insulating sleeve 7 are respectively inserted into the first through hole a of the first insulating plate 1 and the second through hole B of the second insulating plate 2. The arrangement of the insulating sleeve 7 can prevent short circuit between metal scraps and the conductive column 3 on one hand, and prevent the conductive column 3 from being separated from the first through hole A of the first insulating plate 1 and the second through hole B of the second insulating plate 2 on the other hand, so as to play a role in fixing the position of the conductive column 3.
In some embodiments, the materials of the first insulating plate 1, the second insulating plate 2 and the insulating sleeve 7 are plastics. For example, the first insulating plate 1, the second insulating plate 2 and the insulating cover 7 may be made of polytetrafluoroethylene. It should be understood that the first insulating plate 1, the second insulating plate 2 and the insulating sleeve 7 may be made of other insulating materials, which is not limited specifically.
In some embodiments, the conductive posts 3 and the third conductive plate 4 are made of metal. For example, the conductive posts 3 and the third conductive plate 4 may each be copper or aluminum material. It should be understood that the conductive posts 3 and the third conductive plate 4 may be made of other metal materials, which is not limited specifically.
In some embodiments, the elastic member 5 is a spring. It should be understood that the elastic member 5 may be other elastic members such as rubber pads, which are not limited in particular.
In a second aspect, as shown in fig. 6-8, the present application provides a battery pack, including at least one layer of cell assemblies 10, each layer of cell assemblies 10 including at least one row of cell chains 11, each row of cell chains 11 including at least two cells 12, any two adjacent cells 12 being electrically connected by a cell connection structure of the first aspect;
In any one row of the cell chains 11, the arrangement direction of at least two cells 12 is perpendicular to the thickness direction of the cells 12.
In one possible implementation, as shown in fig. 6, a layer of the cell assembly 10 includes 4 rows of cell chains 11, each row of cell chains 11 includes 6 cells 12, and the 6 cells 12 are sequentially connected end to end, i.e., in series, by a cell connection structure. The battery cells 12 adopt a transverse connection mode, which is beneficial to increasing the heat dissipation area of the battery cells 12 and improving the heat dissipation effect. It should be noted that, the number of layers of the battery cell assemblies 10, the number of rows of the battery cell chains 11 of each layer of the battery cell assemblies 10, and the number of the battery cells 12 of each row of the battery cell chains 11 in the battery pack according to the embodiment of the present application may be set according to practical application conditions, and the number is not specifically limited.
In some embodiments, the battery cells 12 include positive electrode columns and negative electrode columns oppositely arranged along the width direction of the battery cells, in any two adjacent battery cells 12, the first insulating plate 1 of the battery cell connection structure is in contact connection with one battery cell 12, the second insulating plate 2 of the battery cell connection structure is in contact connection with the other battery cell 12, the conductive column 3 of the battery cell connection structure is electrically connected with the positive electrode column or the negative electrode column of the one battery cell 12, and the third conductive plate 4 of the battery cell connection structure is electrically connected with the negative electrode column or the positive electrode column of the other battery cell.
In a possible implementation manner, as shown in fig. 6, the battery cells 12 in the embodiment of the present application have a structure that the two ends of the battery cells are provided with the polar posts along the width direction, and the polar posts of any two adjacent battery cells 12 can be electrically connected through the battery cell connection structure without welding the polar posts, so that the transverse arrangement of the battery cells 12 is realized, the head-to-tail connection between different battery cells 12 is realized, and the heat dissipation effect of the battery cells 12 is improved.
In some embodiments, when the cell assembly 10 includes multiple rows of cell chains 11, the battery pack also includes a buss bar 13;
in any two adjacent rows of cell chains 11, one end of a busbar 13 is connected with one cell 12 in one row of cell chains 11, and the other end is connected with one cell 12 in the other row of cell chains 11.
In a possible implementation, as shown in fig. 6 and 7, the application also provides a busbar 13 for the serial connection between the different cell chains 11. In the same-layer cell assembly 10, one end of the busbar 13 is connected to the pole of one cell 12 of one row of cell chains 11, and the other end is connected to the pole of one cell 12 of the other row of cell chains 11.
In some embodiments, the battery pack further includes a liquid cooling plate 14;
When the battery pack comprises a layer of battery cell assembly 10, the liquid cooling plate 14 is in contact connection with the battery cell assembly 10;
When the battery pack comprises a plurality of layers of cell assemblies 10, the liquid cooling plate 14 is arranged between any two adjacent layers of cell assemblies 10 and is in contact connection with the two layers of cell assemblies 10.
In a possible implementation manner, when the battery pack only includes one layer of the battery cell assembly 10, the liquid cooling plate 14 is disposed on a surface of one side of the layer of the battery cell assembly 10 perpendicular to the thickness direction, so that the battery cells 12 in the battery cell assembly 10 are all in contact with the liquid cooling plate 14, and the direct contact area between the battery cells 12 and the liquid cooling plate 14 is increased, which is beneficial to improving the cooling efficiency of the battery cell assembly 10.
In another possible implementation, as shown in fig. 8, when the battery pack includes multiple layers of the cell assemblies 10, the liquid cooling plate 14 is disposed between any two adjacent layers of the cell assemblies 10, so that each layer of the cell assemblies 10 can directly contact with the liquid cooling plate 14, thereby improving the heat dissipation effect and the cooling efficiency. That is, after the battery cells 12 are horizontally arranged, the number of the liquid cooling plates 14 is increased, and the liquid cooling effect of the battery cell assembly 10 is improved.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. The battery core connecting structure is used for connecting the pole columns of two adjacent battery cores and is characterized by comprising a first insulating plate, a second insulating plate, a conductive column, a third conductive plate and an elastic piece;
The first insulating plate is provided with a first through hole, the second insulating plate is provided with a second through hole, and the third conducting plate is fixedly arranged on one side of the second insulating plate far away from the first insulating plate and is positioned at the opening of the second through hole;
The elastic piece is sleeved outside the conductive column, one end of the elastic piece is connected with the first insulating plate, and the other end of the elastic piece is connected with the second insulating plate and used for providing acting force far away from the first insulating plate for the second insulating plate.
2. The cell connection structure according to claim 1, wherein the conductive post includes a plug portion, the plug portion is disposed on a side of the conductive post facing away from the first insulating plate, and the plug portion is slidably connected to the third conductive plate.
3. The cell connection structure according to claim 2, further comprising an insulating sleeve, wherein the insulating sleeve is sleeved outside the conductive column and between the conductive column and the elastic member, and one end of the insulating sleeve is inserted into the first through hole, and the other end of the insulating sleeve is inserted into the second through hole.
4. The cell connection structure according to claim 3, wherein the materials of the first insulating plate, the second insulating plate and the insulating sleeve are plastics.
5. The electrical core connection structure according to claim 4, wherein the conductive posts and the third conductive plate are made of metal.
6. The cell connection structure according to claim 1, wherein the elastic member is a spring.
7. A battery pack comprising at least one layer of cell assemblies, each layer of cell assemblies comprising at least one row of cell chains, each row of cell chains comprising at least two cells, any two adjacent cells being electrically connected by a cell connection structure according to any one of claims 1-6;
In any one row of the battery cell chains, the arrangement direction of the at least two battery cells is perpendicular to the thickness direction of the battery cells.
8. The battery pack according to claim 7, wherein the cells include positive and negative electrode posts disposed opposite to each other in a width direction thereof, and in any two adjacent cells, the first insulating plate of the cell connecting structure is in contact connection with one of the cells, the second insulating plate of the cell connecting structure is in contact connection with the other cell, and the conductive post of the cell connecting structure is electrically connected with the positive electrode post or the negative electrode post of the one cell, and the third conductive plate of the cell connecting structure is electrically connected with the negative electrode post or the positive electrode post of the other cell.
9. The battery pack of claim 8, wherein when the cell assembly comprises a plurality of rows of cell chains, the battery pack further comprises a buss bar;
In any two adjacent rows of the cell chains, one end of the busbar is connected with one cell in one row of the cell chains, and the other end of the busbar is connected with one cell in the other row of the cell chains.
10. The battery pack of claim 9, wherein the battery pack further comprises a liquid cooling plate;
when the battery pack comprises a layer of the battery cell assembly, the liquid cooling plate is in contact connection with the battery cell assembly;
When the battery pack comprises a plurality of layers of the battery cell assemblies, the liquid cooling plate is arranged between any two adjacent layers of the battery cell assemblies and is in contact connection with the two layers of the battery cell assemblies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422131694.4U CN223124126U (en) | 2024-09-02 | 2024-09-02 | Battery cell connection structure and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422131694.4U CN223124126U (en) | 2024-09-02 | 2024-09-02 | Battery cell connection structure and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223124126U true CN223124126U (en) | 2025-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422131694.4U Active CN223124126U (en) | 2024-09-02 | 2024-09-02 | Battery cell connection structure and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223124126U (en) |
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- 2024-09-02 CN CN202422131694.4U patent/CN223124126U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20251218 Address after: 261001 Shandong city in Weifang province Fu hi tech Industrial Development Zone, East Street No. 197 Patentee after: WEICHAI POWER Co.,Ltd. Country or region after: China Patentee after: Weichai New Energy Power Technology Co.,Ltd. Patentee after: Weichai (Yantai) New Energy Power Technology Co.,Ltd. Address before: 261001 Shandong city in Weifang province Fu hi tech Industrial Development Zone, East Street No. 197 Patentee before: WEICHAI POWER Co.,Ltd. Country or region before: China Patentee before: Weichai New Energy Power Technology Co.,Ltd. |
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| TR01 | Transfer of patent right |