Ccs assembly, battery pack

Abstract

The utility model provides a kind of CCS assembly, battery pack, CCS assembly includes support and cover plate, support is equipped with multiple guide holes, cover plate is located on support, cover plate is equipped with through hole, through hole corresponds with guide hole, cover plate is equipped with accommodating cavity, accommodating cavity is communicated adjacent through hole;The space formed by accommodating cavity is used for the release of electrolytic gas, equivalent to reserve as the space of electrolytic gas release, avoid the deformation of liquid cooling plate caused by limited electrolytic gas release space.

Description

Technical Field

[0001] This utility model relates to the field of power battery technology, specifically to a CCS component and a battery pack. Background Technology

[0002] In related technologies, the gap between the CCS module and the top liquid cooling plate is too small. When the battery valve is opened, the space for the release of electrolytic gas is limited, which can easily cause the top liquid cooling plate to deform.

[0003] Therefore, CCS components in related technologies suffer from the technical problem of limited space for the release of electrolytic gas. Utility Model Content

[0004] The present invention provides a CCS module and a battery pack. By forming a receiving cavity on the cover plate of the CCS module to connect adjacent through holes, the electrolytic gas is released through the through holes and the receiving cavity, which can improve the technical problem of limited space for releasing electrolytic gas in the existing CCS module.

[0005] In a first aspect, embodiments of the present invention provide a CCS component, comprising:

[0006] The bracket is provided with multiple guide holes;

[0007] A cover plate is disposed on the bracket, and the cover plate has a through hole corresponding to the guide hole; wherein, a receiving cavity is formed on the cover plate, and the receiving cavity is connected to the adjacent through hole.

[0008] In one embodiment, the cover plate is provided with a recessed groove, the bottom surface of the recessed groove is less than the top surface of the cover plate, the through hole is provided on the bottom surface of the recessed groove, and the recessed groove forms a receiving cavity located between adjacent through holes.

[0009] In one embodiment, the width of the sink is between 18 mm and 22 mm along the width direction of the CCS component.

[0010] In one embodiment, the CCS assembly further includes a wiring harness, the cover plate includes a main body and a shielding part, the main body is provided with a recess, a wire groove is formed between the shielding part and the bracket, the wiring harness is disposed in the wire groove, wherein the shielding part at least covers the wiring harness.

[0011] In one embodiment, the top surface of the shielding portion is formed with a stepped structure, the stepped structure including at least a first step close to the sinking trough and a second step away from the sinking trough, the height of the second step being greater than the height of the first step.

[0012] In one embodiment, the cover plate has an opening on its side for leading out the wire harness.

[0013] In one embodiment, the width of the blocking portion ranges from 8 mm to 10 mm along the width direction of the CCS component.

[0014] In one embodiment, the CCS assembly further includes at least one retaining edge, which is fixedly connected to the bracket, wherein the retaining edge abuts against the cover plate in the width direction of the CCS assembly to limit its movement.

[0015] In one embodiment, the retaining edge is integrally formed with the bracket.

[0016] In one embodiment, a guide hole is provided with two stops, which are distributed at both ends of the guide hole along the width direction. The cover plate is provided with a mating groove corresponding to the stops, and the mating groove is fitted into the stops.

[0017] In one embodiment, the depth of the guide hole ranges from 1.5 mm to 7 mm.

[0018] Secondly, embodiments of the present invention provide a battery pack including the CCS component as described in any of the above embodiments.

[0019] The beneficial effects of the embodiments of this utility model are as follows:

[0020] In an embodiment of this utility model, a receiving cavity is opened in the cover plate of the CCS component. The receiving cavity is formed by the recess of the cover plate facing the support. The space formed by the receiving cavity is used for the release of electrolytic gas, which is equivalent to reserving space for the release of electrolytic gas, thus avoiding deformation of the liquid cooling plate due to limited space for the release of electrolytic gas. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the CCS component provided in an embodiment of this utility model;

[0023] Figure 2 This is an exploded view of the CCS component provided in an embodiment of this utility model.

[0024] 1. CCS assembly; 2. Bracket; 3. Cover plate; 31. Main body; 32. Shielding part; 4. Slot; 5. Guide hole; 6. Through hole; 7. Wire harness; 8. Wire groove; 9. Edge guard; 10. Conductive busbar. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0026] Furthermore, the terms "first," "second," and similar words do not indicate any order, quantity, or importance, but are merely used to distinguish different technical features. The terms "multiple" and similar words indicate two or more unless otherwise expressly specified.

[0027] Please see Figure 1 and Figure 2 The CCS component 1 provided in the embodiment of this utility model includes a bracket 2 and a cover plate 3. The bracket 2 is provided with a plurality of guide holes 5. The cover plate 3 is disposed on the bracket 2 and is provided with through holes 6, which correspond to the guide holes 5. The cover plate 3 is provided with a receiving cavity, which communicates with adjacent through holes 6.

[0028] It also includes a conductive bus 10 for electrically connecting multiple battery cells.

[0029] In this embodiment, the space formed by the receiving cavity is used for the release of electrolytic gas, which is equivalent to reserving space for the release of electrolytic gas, thus avoiding deformation of the liquid cooling plate due to limited space for the release of electrolytic gas.

[0030] In one embodiment, the cover plate 3 is provided with a recessed groove 4, the height of the bottom surface of the recessed groove 4 is less than the height of the top surface of the cover plate 3, the through hole 6 is provided on the bottom surface of the recessed groove 4, and the recessed groove 4 forms the receiving cavity.

[0031] The receiving cavity may be located between adjacent through holes 6.

[0032] The settling tank 4 can be formed by recessing the cover plate 3 towards the support 2 to create a receiving cavity between the settling tank 4 and the top liquid cooling plate.

[0033] It is understandable that the cavity can also be formed in other ways, as long as it satisfies the requirement that there is a cavity connecting the cover plate 3 and the top liquid cooling plate to the adjacent through holes 6. Both ends of the cavity are connected to the outside in the direction along the arrangement of the through holes 6, so that the through holes 6 can be used as an exhaust channel cavity. The cavity is connected to the outside at both ends to exhaust the gas to the outside. Compared with the existing technology where only one end is vented and the other end is sealed, the exhaust efficiency can be improved and the deformation of the top liquid cooling plate caused by the limited space for electrolytic gas release can be avoided.

[0034] In one embodiment, the depth of the sink 4 ranges from 3 mm to 8.5 mm.

[0035] The depth of the settling tank 4 is any one of 3mm, 5mm, 6.5mm, or 8.5mm.

[0036] The height of the guide groove formed by the guide hole 5 in the bracket 2 ranges from 1.5mm to 7mm.

[0037] The height of the guide groove formed by the guide hole 5 in the bracket 2 can be changed from the original design of 10mm to 5mm by setting the receiving cavity of the sink 4.

[0038] It is understandable that when the depth of the settling tank 4 is less than 3mm, the volume of the accommodating cavity is insufficient, the electrolytic gas cannot diffuse sufficiently, resulting in reduced exhaust efficiency and poor exhaust effect. Residual gas may still accumulate and compress the liquid cooling plate.

[0039] Understandably, if the depth of the sink 4 is greater than 8.5mm, the structural strength of the cover plate 3 will decrease significantly, and it will be prone to bending and breaking due to mechanical load or thermal stress. At the same time, an excessively deep cavity will increase the processing difficulty and cost.

[0040] It should be noted that the depth of the settling tank 4 is the height difference between the bottom surface of the settling tank 4 and the top surface of the first step in the stepped structure.

[0041] In this embodiment, the depth of the sink 4 ranges from 3mm to 8.5mm. On the one hand, it can enhance the exhaust efficiency, and on the other hand, it can also take into account the structural strength of the cover plate 3, reducing the processing difficulty and cost.

[0042] In one embodiment, the width of the sink 4 along the width direction of the CCS component 1 ranges from 18 mm to 22 mm.

[0043] The width of the settling tank 4 can be any one of 18mm, 20mm, or 22mm.

[0044] It is understandable that if the width of the settling tank 4 is less than 18mm, the settling tank 4 may block the edge of the guide hole 5, hindering the gas from entering the receiving cavity from the guide hole 5 and the through hole 6, resulting in poor local exhaust and affecting the discharge of electrolytic gas.

[0045] It is understandable that if the width of the recessed groove 4 exceeds 22mm, the width of the cover plate 3 covering the shielding part 32 of the wire harness 7 will be insufficient, resulting in a smaller groove size of the wire groove 8. The wire harness 7 will be easily exposed or interfere with the edge of the recessed groove 4, which is not conducive to the routing of the wire harness 7 and affects the safety and aesthetics of the wire harness 7 arrangement.

[0046] In this embodiment, the width of the sink 4 ranges from 18mm to 22mm. On the one hand, this can avoid poor local ventilation. On the other hand, it can also better arrange the wire harness 7 and set the wire groove 8. Placing the wire harness 7 in the wire groove 8 can improve the safety and aesthetics of the wire harness 7 arrangement.

[0047] In one embodiment, please refer to Figure 1 The CCS component 1 also includes a wire harness 7. The cover plate 3 includes a main body 31 and a shielding part 32. The main body 31 is provided with a recessed groove 4. A wire groove 8 is formed between the shielding part 32 and the bracket 2. The wire harness 7 is disposed in the wire groove 8. The shielding part 32 at least covers the wire harness 7.

[0048] The wiring harness 7 is arranged in the wire groove 8 between the bracket 2 and the cover plate 3, and is used to connect the BMS (Battery Management System) component.

[0049] The main body 31 is a region with a sinkhole 4, which can be set to have a uniform thickness to ensure the structural strength of the cover plate 3.

[0050] The shielding part 32 is a folded edge extending from the edge of the main body part 31, and can be "L" shaped.

[0051] Understandably, the shielding part 32 and the side wall of the bracket 2 form a closed wire groove 8 to wrap the wire harness 7 and prevent electrolyte splashing or external mechanical damage to the wire harness 7. The height of the wire groove 8 can be 1.2 to 1.5 times the diameter of the wire harness 7 to ensure that the wire harness 7 can be freely arranged and avoid excessive compression.

[0052] In one embodiment, the top surface of the shielding part 32 is formed with a stepped structure, the stepped structure including at least a first step 11 close to the sink 4 and a second step 12 away from the sink 4, the first step 11 and the main body part 31 together form a receiving cavity, and the height of the second step 12 is greater than the height of the first step 11.

[0053] Understandably, the shielding part 32 not only separates the electrolytic gas from the wire harness 7 to protect the wire harness 7, but also forms a height difference between the first step 11 and the settling tank 4, and a height difference between the second step 12 and the settling tank 4. The gap formed by the height difference between the first step 11 and the second step 12 is connected to the receiving cavity and used to release the electrolytic gas. At the same time, the splashed electrolyte will also flow back to the bottom of the settling tank 4 along the stepped structure and be discharged through both ends of the settling tank 4 along its length. In other words, the stepped structure also plays a guiding role, making it difficult for the splashed electrolyte to overflow and flow back to the settling tank 4 with the stepped structure, so that the electrolyte and electrolytic gas can be discharged along the settling tank 4.

[0054] In one embodiment, the width of the blocking portion 32 ranges from 8 mm to 10 mm along the width direction of the CCS component 1.

[0055] The width of the shielding part 32 can be any one of 8mm, 9mm, or 10mm.

[0056] Understandably, if the width is less than 8mm, the shielding part 32 cannot completely cover the spray path of the cell explosion-proof valve, and the electrolyte splash may directly impact the cover plate 3 or the wire harness 7; if the width exceeds 10mm, the effective space for wiring in the wire groove 8 is reduced, resulting in insufficient bending radius of the wire harness 7, which is prone to interference or signal interference.

[0057] In one embodiment, the CCS assembly 1 further includes at least one retaining edge 9, which is fixedly connected to the bracket 2, wherein the retaining edge 9 abuts against the cover plate 3 in the width direction of the CCS assembly 1 to limit its movement.

[0058] Along the length of the bracket 2, multiple flanges 9 are welded or integrally formed on both sides of the guide hole 5 of the bracket 2.

[0059] The inner side of the retaining edge 9 has a protrusion that fits into the groove on the edge of the cover plate 3, restricting the cover plate 3 from moving in the width direction of the CCS assembly 1, so as to ensure that the through hole 6 and the guide hole 5 are precisely aligned.

[0060] It is understandable that the flange 9 and the bracket 2 are made of the same material, which can be, but is not limited to, aluminum alloy, in order to avoid loosening of the connection due to the difference in thermal expansion coefficient.

[0061] In one embodiment, the retaining edge 9 is integrally formed with the bracket 2.

[0062] Understandably, by using extrusion molding or precision casting processes, the flange 9 and the bracket 2 can form a seamless connection structure, eliminating stress concentration points caused by welding or bolting, and improving the overall vibration resistance.

[0063] It should be noted that the surface of the integrally formed part of the retaining edge 9 and the bracket 2 can be anodized to enhance corrosion resistance.

[0064] In one embodiment, the cover plate 3 has an opening on its side for leading out the wire harness 7.

[0065] The wire harness 7 is led out from the opening to collect temperature or voltage.

[0066] In one embodiment, a guide hole 5 is provided with two flanges 9, which are distributed at both ends of the guide hole 5 along the width direction. The cover plate 3 forms a mating groove corresponding to the flange 9, and the mating groove is fitted with the flange 9.

[0067] The cover plate 3 has a rectangular groove at the position corresponding to the edge 9. A rubber gasket is pasted on the inner wall of the groove and fits tightly with the edge 9, which has both limiting and shock absorption functions.

[0068] It is understandable that the two baffles 9 are symmetrically distributed on both sides of the guide hole 5, and the distance between the two baffles 9 can be greater than the diameter of the guide hole 5 to ensure that the gas is not disturbed by the baffles 9 when passing through the guide hole 5; the groove provided on the cover plate 3 is used to fit with the baffles 9 for better positioning.

[0069] In one embodiment, the depth of the guide hole 5 ranges from 1.5 mm to 7 mm.

[0070] The depth of the guide hole 5 can be any one of 1.5mm, 3mm, 4mm, 5mm, or 7mm.

[0071] It is understandable that when the depth of the guide hole 5 is less than 1.5mm, the guide hole 5 is easily blocked by electrolyte residue, affecting the gas release efficiency; when the depth of the guide hole 5 is greater than 7mm, the local wall thickness of the bracket 2 is too thin, which may cause plastic deformation due to the expansion force of the battery module.

[0072] In this embodiment, by making the depth of the guide hole 5 range from 1.5mm to 7mm, on the one hand, the release efficiency of electrolytic gas is improved; on the other hand, the bracket 2 is prevented from undergoing plastic deformation due to the expansion force of the battery module.

[0073] Secondly, embodiments of the present invention provide a battery pack including the CCS component 1 as described in any of the above embodiments.

[0074] This also includes battery cells and battery cell explosion-proof valves. Multiple battery cells are arranged in parallel or series. The settling tank 4 is aligned with the battery cell explosion-proof valve to ensure that the electrolytic gas is released directly from the battery cell explosion-proof valve into the settling tank 4.

[0075] It also includes a top liquid cooling plate, which is spaced apart from the CCS component 1. The distance between the top liquid cooling plate and the CCS component 1 is not less than the depth of the settling tank 4, so as to avoid deformation caused by the transmission of electrolytic gas pressure.

[0076] This utility model provides a CCS component 1. By opening a groove 4 on the cover plate 3 of the CCS component 1, the groove 4 is connected to a through hole 6. The electrolytic gas generated by the battery reaches the groove 4 through the through hole 6 and is released. The increased space of the groove 4 is used to release the electrolytic gas, thus avoiding the deformation of the liquid cooling plate caused by the limited space for the release of electrolytic gas.

[0077] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A CCS component (1), characterized in that, include: The bracket (2) is provided with multiple guide holes (5); Cover plate (3), the cover plate (3) is provided on the bracket (2), the cover plate (3) is provided with through hole (6), the through hole (6) corresponds to the guide hole (5); wherein, the cover plate (3) is formed with a receiving cavity, the receiving cavity is connected to the adjacent through hole (6).

2. The CCS component (1) according to claim 1, characterized in that, The cover plate (3) is provided with a sink groove (4), the bottom surface of the sink groove (4) is less than the top surface of the cover plate (3), the through hole (6) is provided on the bottom surface of the sink groove (4), and the sink groove (4) forms the receiving cavity.

3. The CCS component (1) according to claim 2, characterized in that, The depth of the settling tank (4) ranges from 3 mm to 8.5 mm.

4. The CCS component (1) according to claim 3, characterized in that, Along the width direction of the CCS component (1), the width of the sink (4) ranges from 18 mm to 22 mm.

5. The CCS component (1) according to any one of claims 2 to 4, characterized in that, The CCS assembly (1) further includes a wire harness (7). The cover plate (3) includes a main body (31) and a shielding part (32). The main body (31) is provided with a receiving cavity. A wire groove (8) is formed between the shielding part (32) and the bracket (2). The wire harness (7) is disposed in the wire groove (8). The shielding part (32) at least covers the wire harness (7).

6. The CCS component (1) according to claim 5, characterized in that, The top surface of the shielding part (32) is formed with a stepped structure, which includes at least a first step (11) close to the sink (4) and a second step (12) away from the sink (4). The first step (11) and the main body part (31) together form a receiving cavity, and the height of the second step (12) is greater than the height of the first step (11).

7. The CCS component (1) according to claim 5, characterized in that, The cover plate (3) has an opening on its side, which is used to lead out the wire harness (7).

8. The CCS component (1) according to claim 5, characterized in that, Along the width direction of the CCS component (1), the width of the shielding part (32) ranges from 8 mm to 10 mm.

9. The CCS component (1) according to any one of claims 1 to 4, characterized in that, The CCS assembly (1) further includes at least one retaining edge (9), which is fixedly connected to the bracket (2), wherein the retaining edge (9) abuts against the cover plate (3) in the width direction of the CCS assembly (1) to limit its movement.

10. The CCS component (1) according to claim 9, characterized in that, The retaining edge (9) is integrally formed with the bracket (2).

11. The CCS component (1) according to claim 9, characterized in that, The guide hole (5) is provided with two flanges (9), which are distributed at both ends of the guide hole (5) along the width direction. The cover plate (3) has a mating groove corresponding to the flange (9), and the mating groove is fitted with the flange (9).

12. The CCS component (1) according to any one of claims 1 to 4, characterized in that, The depth of the guide hole (5) ranges from 1.5 mm to 7 mm.

13. A battery pack, characterized in that, Includes the CCS component (1) as described in any one of claims 1 to 12.

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