Integrated busbar assembly, battery module, battery pack and vehicle

Abstract

The utility model discloses an integrated busbar assembly, a battery module, a battery pack and a vehicle, the integrated busbar assembly comprises a support and a temperature sensor, the support is provided with a glue storage groove used for accommodating heat-conducting glue, and the glue storage groove penetrates through the support along the height direction of the support; and the temperature sensor is arranged in the glue storage tank and is connected with the bracket through the heat-conducting glue. According to the integrated busbar assembly provided by the utility model, the temperature sensor can be installed and fixed under the condition that a sensor installation frame is not arranged, so that the number of parts of the integrated busbar assembly can be reduced, and the cost and the weight of the integrated busbar assembly are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, and in particular to an integrated busbar assembly, a battery module, a battery pack and a vehicle. Background Art

[0002] CCS (Cells Contact System, integrated busbar) is an important component of the battery pack, which is used to realize the series and parallel connection of battery cells and the temperature and voltage signal collection of battery cells. In the related technology, the integrated busbar assembly includes a bracket, a busbar sensor mounting frame, a temperature sensor and a thermal pad, wherein the busbar and the sensor mounting frame are both connected to the bracket, and the temperature sensor and the thermal pad are both connected to the sensor mounting frame. After the integrated busbar assembly is connected to the battery cell, the thermal pad is clamped between the battery cell and the temperature sensor, and the thermal pad is used to transfer the heat generated by the battery cell to the temperature sensor to realize the temperature collection of the battery cell. The above-mentioned integrated busbar assembly needs to be equipped with a sensor mounting frame to realize the installation and fixation of the temperature sensor, resulting in a large number of parts in the integrated busbar assembly, high cost and heavy weight. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, the utility model proposes an integrated busbar assembly to reduce the cost and weight of the integrated busbar assembly.

[0005] The integrated busbar assembly of the utility model comprises a bracket and a temperature sensor, wherein the bracket is provided with a glue storage tank for accommodating thermally conductive glue, and the glue storage tank penetrates the bracket along the height direction of the bracket; the temperature sensor is arranged in the glue storage tank, and the temperature sensor is connected to the bracket through the thermally conductive glue.

[0006] Optionally, the temperature sensor is entirely disposed in the glue storage tank.

[0007] Optionally, in the height direction, the bottom end of the temperature sensor is arranged higher than the bottom end of the glue storage tank; and / or, in the height direction, the top end of the temperature sensor is arranged lower than the top end of the glue storage tank.

[0008] Optionally, the bracket includes a plate body and an annular boss, the boss is arranged on the top of the plate body, a part of the glue storage tank is arranged on the plate body, and another part of the glue storage tank is surrounded by the annular boss.

[0009] Optionally, the integrated busbar assembly further includes a collection harness and a circuit board, the two ends of the collection harness are electrically connected to the temperature sensor and the circuit board respectively, and the circuit board is connected to the bracket; a avoidance opening is provided at the top of the annular boss, and the collection harness passes through the avoidance opening.

[0010] The utility model also provides a battery module.

[0011] The battery module of the utility model comprises an integrated busbar assembly, a plurality of battery cells and thermally conductive adhesive, wherein the integrated busbar assembly is the integrated busbar assembly described in any one of the above items; the battery cell comprises a top cover, the integrated busbar assembly is arranged on the top of the top cover and is connected to the battery cell, and a rubber storage cavity with a top opening is formed between the rubber storage tank and the top cover; the thermally conductive adhesive is arranged in the rubber storage cavity.

[0012] Optionally, the thermally conductive adhesive includes a first part, which is disposed between the temperature sensor and the top cover, and the temperature sensor and the top cover are bonded together via the first part; and / or, the thermally conductive adhesive includes a second part, which is disposed between the temperature sensor and the wall of the adhesive storage tank, and the temperature sensor and the bracket are bonded together via the second part.

[0013] Optionally, the thermally conductive adhesive fills the adhesive storage cavity.

[0014] The utility model also provides a battery pack.

[0015] The battery pack of the present invention comprises a box body and a battery module. The battery module is any one of the battery modules described above, and the battery module is arranged in the box body.

[0016] The utility model further provides a vehicle.

[0017] The vehicle of the present invention comprises the battery pack described in any one of the above items.

[0018] When the integrated busbar assembly of the utility model is used in a battery module, the integrated busbar assembly is arranged on the top of the battery cell, and a thermally conductive adhesive is injected into the adhesive storage tank so that the thermally conductive adhesive fills the gap between the top cover and the temperature sensor, and the thermally conductive adhesive is used to achieve heat transfer between the battery cell and the temperature sensor, thereby realizing temperature acquisition of the battery cell. Thus, the temperature sensor can be installed and fixed without setting a sensor mounting frame, thereby reducing the number of parts of the integrated busbar assembly and reducing the cost and weight of the integrated busbar assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a diagram of the integrated busbar assembly in use according to an embodiment of the utility model (the circuit board is not shown).

[0020] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0021] Figure 3 yes Figure 1 A partial cross-sectional view of .

[0022] Figure 4 It is a partial structural schematic diagram of an integrated busbar assembly according to an embodiment of the utility model.

[0023] Figure 5 It is a schematic structural diagram of a CC bracket of an integrated busbar assembly according to an embodiment of the utility model.

[0024] Figure 6 yes Figure 5 Enlarged view of point B in the middle.

[0025] Figure 7 It is a partial structural schematic diagram of a CC bracket of an integrated busbar assembly according to an embodiment of the utility model.

[0026] Reference numerals:

[0027] 100. Battery module;

[0028] 10. Integrated busbar assembly;

[0029] 1. bracket; 11. glue storage tank; 12. plate body; 13. annular boss; 131. avoidance opening; 14. riveting column; 15. receiving groove;

[0030] 2. Temperature sensor;

[0031] 3. Collect wire harness;

[0032] 4. Circuit board;

[0033] 5. Bus;

[0034] 20. battery cell; 201. top cover;

[0035] 30. Thermal conductive adhesive; 301. First part; 302. Second part; 303. Third part. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0037] like Figures 1 to 3As shown, the integrated busbar assembly 10 of the embodiment of the utility model includes a bracket 1 and a temperature sensor 2. The bracket 1 is provided with a glue storage tank 11 for accommodating a thermally conductive glue 30. The glue storage tank 11 penetrates the bracket 1 along the height direction of the bracket 1. The temperature sensor 2 is arranged in the glue storage tank 11. The temperature sensor 2 is connected to the bracket 1 through the thermally conductive glue 30.

[0038] like Figure 3 As shown, when the integrated busbar assembly 10 of the embodiment of the utility model is used in the battery module 100, the integrated busbar assembly 10 is arranged on the top of the battery cell 20, and the thermal conductive glue 30 is injected into the glue storage tank so that the thermal conductive glue 30 fills the gap between the top cover 201 and the temperature sensor 2, and the thermal conductive glue 30 is used to achieve heat transfer between the battery cell 20 and the temperature sensor 2, so as to realize the temperature collection of the battery cell 20. Therefore, without setting a sensor mounting frame, the temperature sensor 2 can be installed and fixed, thereby reducing the number of parts of the integrated busbar assembly 10, and reducing the cost and weight of the integrated busbar assembly 10.

[0039] In some embodiments, the temperature sensor 2 is disposed in its entirety in the glue storage tank 11. In other words, in the height direction of the bracket 1, the top of the glue storage tank 11 is not lower than the top of the temperature sensor 2, and in the height direction of the bracket 1, the bottom of the temperature sensor 2 is not lower than the bottom of the glue storage tank 11.

[0040] By placing the temperature sensor 2 in the glue storage tank 11 as a whole, when the thermal conductive glue 30 fills the glue storage tank 11, the contact area between the thermal conductive glue 30 and the temperature sensor 2 is large. On the one hand, the heat transfer efficiency between the temperature sensor 2 and the thermal conductive glue 30 can be improved, thereby improving the temperature acquisition accuracy of the battery cell 20; on the other hand, the connection area between the temperature sensor 2 and the thermal conductive glue 30 can be increased, thereby improving the connection reliability between the temperature sensor 2 and the bracket 1, and improving the reliability of the integrated busbar assembly 10. In addition, the glue storage tank 11 can also be used to protect the temperature sensor 2, improve the safety of the temperature sensor 2, and thus improve the reliability of the integrated busbar assembly 10.

[0041] In order to make the technical solution of the present invention easier to understand, the following takes the example that the height direction of the bracket 1 is consistent with the up-down direction to further describe the technical solution of the present invention. Figures 1 to 3 , Figure 6 and Figure 7 shown.

[0042] For example, Figure 3As shown, the glue storage tank 11 extends in the up-down direction, the upper end of the glue storage tank 11 passes through the upper end of the bracket 1, and the lower end of the glue storage tank 11 passes through the lower end of the bracket 1. The upper end of the temperature sensor 2 is not higher than the upper end of the glue storage tank 11, and the lower end of the temperature sensor 2 is not lower than the lower end of the glue storage tank 11. When the integrated busbar assembly 10 is used in the battery module 100, the integrated busbar assembly 10 is arranged on the upper part of the battery cell 20, so that a glue storage cavity is formed between the bracket 1 and the top cover 201 of the battery cell 20, and the thermal conductive glue 30 is injected into the glue storage cavity through the upper end notch of the glue storage tank 11.

[0043] Optionally, in the height direction of the bracket 1 , the bottom end of the temperature sensor 2 is arranged higher than the bottom end of the glue storage tank 11 .

[0044] For example, Figure 3 As shown, the lower end of the temperature sensor 2 is arranged on the upper side of the lower end of the glue storage tank 11 .

[0045] Thus, the gap between the temperature sensor 2 and the top cover 201 of the battery cell 20 can be fully filled with the thermal conductive adhesive 30, and the thermal conductive adhesive 30 is used to improve the heat transfer efficiency between the temperature sensor 2 and the battery cell 20, thereby improving the temperature acquisition accuracy of the battery cell 20. In addition, the thermal conductive adhesive 30 disposed between the temperature sensor 2 and the top cover 201 of the battery cell 20 is the first part 301, and the first part 301 can be used to bond and fix the temperature sensor 2 and the battery cell 20, thereby improving the connection stability between the temperature sensor 2 and the battery cell 20.

[0046] Optionally, in the height direction of the bracket 1 , the top end of the temperature sensor 2 is arranged lower than the top end of the glue storage tank 11 .

[0047] For example, Figure 3 As shown, the upper end of the temperature sensor 2 is arranged at the lower side of the upper end of the glue storage tank 11 .

[0048] Thus, when the thermal conductive adhesive 30 fills the adhesive storage tank 11, the side of the temperature sensor 2 away from the battery cell 20 can be covered by the thermal conductive adhesive 30, so as to better protect the temperature sensor 2, improve the safety of the temperature sensor 2, and thus improve the reliability of the integrated busbar assembly 10. In addition, the thermal conductive adhesive 30 disposed on the side of the temperature sensor 2 away from the top cover 201 is the third part 303, and the third part 303 can be used to bond and fix the temperature sensor 2 and the bracket 1, thereby improving the connection stability of the temperature sensor 2 and the bracket 1.

[0049] Alternatively, if Figure 3 , Figure 6 and Figure 7 As shown, the bracket 1 includes a plate body 12 and an annular boss 13, wherein the boss is disposed on the top of the plate body 12. A portion of the glue storage tank 11 is disposed on the plate body 12, and another portion of the glue storage tank 11 is surrounded by the annular boss 13.

[0050] For example, the annular boss 13 is disposed on the upper part of the plate body 12, the plate body 12 is provided with a hollow area, the annular boss 13 surrounds a cavity, the hollow area and the cavity are arranged correspondingly up and down, and the hollow area and the cavity constitute the glue storage tank 11. Among them, the hollow area forms the part of the glue storage tank 11 disposed on the plate body 12, and the cavity forms the part of the glue storage tank 11 disposed on the annular boss 13.

[0051] By setting the bracket 1 to the above structure, when the thickness of the plate body 12 is relatively thin, the depth of the glue storage tank 11 is relatively large by partially thickening the plate body 12, that is, by setting the annular boss 13 on the plate body 12, so as to meet the use requirements. Therefore, when the depth of the glue storage tank 11 can meet the use requirements, the cost and weight of the bracket 1 can be reduced, thereby further reducing the cost and weight of the integrated busbar assembly 10.

[0052] Optionally, the bracket 1 is a blister tray. In other words, the bracket 1 is integrally blister-formed.

[0053] The glue storage tank 11 is formed into an annular structure by a vacuum forming process, and the bottom of the glue storage tank 11 is punched into a through structure.

[0054] By configuring the bracket 1 as a blister tray, the thickness and weight of the bracket 1 can be reduced, thereby further reducing the cost and weight of the integrated busbar assembly 10 .

[0055] Alternatively, if Figure 5 As shown, the support 1 is a tray.

[0056] Alternatively, if Figure 4 and Figure 7 As shown, the integrated busbar assembly 10 also includes a collection harness 3 and a circuit board 4, and the two ends of the collection harness 3 are electrically connected to the temperature sensor 2 and the circuit board 4 respectively. The circuit board 4 is connected to the bracket 1. The top of the annular boss 13 is provided with an avoidance opening 131, and the collection harness 3 passes through the avoidance opening 131.

[0057] The circuit board 4 and the bracket 1 may be bonded, for example, by double-sided adhesive. The circuit board 4 may be a FPC (Flexible Printed Circuit). The collection harness 3 is used to transmit the temperature signal collected by the temperature sensor 2 to the circuit board 4. The top of the collection harness 3 is set lower than the top of the annular boss 13, or the top of the collection harness 3 is flush with the top of the annular boss 13.

[0058] For example, Figure 7As shown, a avoidance opening 131 is provided on the upper portion of the annular boss 13, and the collection harness 3 passes through the avoidance opening 131, so that one end of the collection harness 3 is located in the glue storage tank 11, and the other end is located outside the glue storage tank 11, thereby realizing electrical connection between the collection harness 3 and the temperature sensor 2 and the circuit board 4.

[0059] By providing an avoidance opening 131 on the top of the annular boss 13 , it is possible to avoid the collection harness 3 being completely exposed outside the annular boss 13 , thereby reducing the risk of wear of the collection harness 3 and further improving the reliability of the integrated busbar assembly 10 .

[0060] Optionally, the top of the collection harness 3 is arranged not higher than the top of the annular boss 13 .

[0061] Thus, the collection harness 3 can be prevented from protruding from the top of the annular boss 13 , thereby further reducing the risk of wear of the collection harness 3 and improving the reliability of the integrated busbar assembly 10 .

[0062] like Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, the bracket 1 is provided with a riveted column 14 and a receiving groove 15, and the integrated busbar assembly 10 further includes a busbar 5, and the busbar 5 is provided with a mounting hole. The busbar 5 is arranged in the receiving groove 15, and the riveted column 14 is inserted in the mounting hole and connected to the busbar 5.

[0063] Specifically, when the busbar 5 is connected to the bracket 1, the busbar 5 is placed in the receiving groove 15, and the rivet column 14 is passed through the mounting hole of the busbar 5. The busbar 5 and the bracket 1 are hot-riveted together by hot riveting to fix the busbar 5. When the integrated busbar assembly 10 is assembled with the battery cell 20, the busbar 5 is electrically connected to the battery cell 20, for example, the busbar 5 is welded to the pole of the battery cell 20 to achieve series connection and / or parallel connection between multiple battery cells 20.

[0064] like Figures 1 to 3 As shown, the battery module 100 includes an integrated busbar assembly 10, a plurality of battery cells 20 and a thermally conductive adhesive 30. The integrated busbar assembly 10 is the integrated busbar assembly 10 of any of the above embodiments. The battery cell 20 includes a top cover 201. The integrated busbar assembly 10 is disposed on the top of the top cover 201 and is connected to the battery cell 20. A glue storage cavity with an opening at the top is formed between the glue storage tank 11 and the top cover 201. The thermally conductive adhesive 30 is disposed in the glue storage cavity.

[0065] Since the integrated busbar assembly 10 in the above embodiment has low cost and weight, the cost and weight of the battery module 100 can be reduced.

[0066] Alternatively, if Figure 3 As shown, the thermal conductive adhesive 30 fills the adhesive storage cavity.

[0067] By filling the glue storage cavity with the thermal conductive adhesive 30, the contact area between the thermal conductive adhesive 30 and the temperature sensor 2 is made larger. On the one hand, the heat transfer efficiency between the temperature sensor 2 and the thermal conductive adhesive 30 can be improved, thereby improving the temperature collection accuracy of the battery cell 20; on the other hand, the connection area between the temperature sensor 2 and the thermal conductive adhesive 30 can be increased, thereby improving the connection reliability between the temperature sensor 2 and the bracket 1, and improving the reliability of the integrated busbar assembly 10.

[0068] Alternatively, if Figure 3 As shown, the thermal conductive adhesive 30 includes a first portion 301 . The first portion 301 is disposed between the temperature sensor 2 and the top cover 201 . The temperature sensor 2 and the top cover 201 are bonded together via the first portion 301 .

[0069] The first portion 301 can be used to bond and fix the temperature sensor 2 and the battery cell 20 , thereby improving the connection stability between the temperature sensor 2 and the battery cell 20 , thereby improving the reliability of the battery module 100 .

[0070] Alternatively, if Figure 3 As shown, the thermal conductive adhesive 30 includes a second portion 302 , and the second portion 302 is disposed between the temperature sensor 2 and the wall of the adhesive storage tank 11 , and the temperature sensor 2 and the bracket 1 are bonded via the second portion 302 .

[0071] The second part 302 can be used to bond and fix the temperature sensor 2 and the bracket 1 , which can improve the connection stability between the temperature sensor 2 and the bracket 1 , thereby improving the reliability of the battery module 100 .

[0072] Alternatively, if Figure 3 As shown, the thermal conductive adhesive 30 includes a third portion 303 . The third portion 303 is disposed on a side of the temperature sensor 2 away from the top cover 201 . The temperature sensor 2 and the bracket 1 are bonded together via the third portion 303 .

[0073] The third part 303 can be used to bond and fix the temperature sensor 2 and the bracket 1 , which can improve the connection stability between the temperature sensor 2 and the bracket 1 , thereby improving the reliability of the battery module 100 .

[0074] The battery pack of the embodiment of the present invention comprises a box body and a battery module 100. The battery module 100 is the battery module 100 described in any of the above embodiments, and the battery module 100 is disposed in the box body.

[0075] Since the cost and weight of the battery module 100 in the above embodiment are relatively low, the cost and weight of the battery pack can be reduced, and the energy density of the battery pack can be increased.

[0076] The vehicle of the embodiment of the utility model includes the battery pack of any one of the above embodiments.

[0077] The vehicle of the embodiment of the utility model has the advantages of long cruising range and the like.

[0078] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. An integrated busbar assembly, characterized in that: include: A bracket, wherein the bracket is provided with a glue storage tank for accommodating thermally conductive glue, and the glue storage tank penetrates the bracket along the height direction of the bracket; A temperature sensor is disposed in the glue storage tank and is connected to the bracket via the thermally conductive glue.

2. The integrated busbar assembly according to claim 1, characterized in that: The temperature sensor is integrally arranged in the glue storage tank.

3. The integrated busbar assembly according to claim 2, characterized in that: The bottom end of the temperature sensor is arranged higher than the bottom end of the glue storage tank in the height direction; and / or The top of the temperature sensor is arranged lower than the top of the glue storage tank in the height direction.

4. The integrated busbar assembly according to claim 1, characterized in that: The bracket includes a plate body and an annular boss, wherein the boss is arranged on the top of the plate body, a part of the glue storage tank is arranged on the plate body, and another part of the glue storage tank is surrounded by the annular boss.

5. The integrated busbar assembly according to claim 4, characterized in that: The integrated busbar assembly further includes a collection harness and a circuit board, wherein two ends of the collection harness are electrically connected to the temperature sensor and the circuit board respectively, and the circuit board is connected to the bracket; A avoidance opening is provided on the top of the annular boss, and the collection harness passes through the avoidance opening; Wherein, the top end of the collecting wire bundle is arranged lower than the top end of the annular boss, or the top end of the collecting wire bundle is flush with the top end of the annular boss.

6. A battery module, characterized in that: include: An integrated busbar assembly, wherein the integrated busbar assembly is the integrated busbar assembly according to any one of claims 1 to 5; A plurality of battery cells, wherein the battery cells include a top cover, the integrated busbar assembly is arranged on the top of the top cover and connected to the battery cells, and a top-opening glue storage cavity is formed between the glue storage tank and the top cover; Thermally conductive adhesive is disposed in the adhesive storage cavity.

7. The battery module according to claim 6, characterized in that: The thermal conductive adhesive comprises a first part, the first part is arranged between the temperature sensor and the top cover, and the temperature sensor and the top cover are bonded together by the first part; and / or The thermally conductive adhesive comprises a second part, the second part is arranged between the temperature sensor and the wall of the adhesive storage tank, and the temperature sensor and the bracket are bonded via the second part.

8. The battery module according to claim 6, characterized in that: The thermal conductive glue fills the glue storage cavity.

9. A battery pack, characterized in that: include: Box; A battery module, wherein the battery module is the battery module as described in any one of claims 6 to 8, and the battery module is arranged in the box.

10. A vehicle, characterized in that: A battery pack comprising the battery pack of claim 9.

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