CCS assembly and battery module

Abstract

The utility model discloses a CCS assembly and a battery module, and relates to the technical field of new energy. The CCS assembly comprises a bottom plate, a chip and a partition plate, the partition plate, the bottom plate and the chip are sequentially arranged on a battery cell, a flange is arranged on the lower surface of the partition plate along the outer edge, the top end of the flange is in attached contact with the upper surface of the battery cell, and a glue injection area is formed among the upper surface of the battery cell, the outer edge of the partition plate and the lower surface of the partition plate. Pole avoiding holes are formed in the bottom plate and the partition plate, poles of the battery cell penetrate through the pole avoiding holes to be connected with the bar, glue injection avoiding holes are formed in the bottom plate and the bar, a glue injection column with a glue injection channel is arranged on the partition plate, and the glue injection column penetrates through the glue injection avoiding holes to extend towards the side away from the battery cell. And the adhesive is injected into the adhesive injection area through the adhesive injection channel. The CCS assembly and the battery module can solve the problem that in the prior art, liquid flowing out from a pressure release valve due to thermal runaway easily causes short circuit of the positive electrode and the negative electrode of a battery cell.

Description

Technical Field

[0001] The utility model relates to the field of new energy technology, and in particular to a CCS component and a battery module. Background Art

[0002] With the development of the new energy industry, more and more vehicles are beginning to use lithium batteries as power sources. The battery box serves as the carrier of the power supply, and several battery cells are arranged inside it. These battery cells can be designed into groups using CTM (Cell To Module, that is, battery cells form modules) or CTP (Cell To Pack, that is, battery cells form battery boxes). Then, a layer of CCS (Cells Contact System, that is, integrated busbar) components is covered on the surface of the battery cells. Since the CCS components are integrated with bars, collection harnesses, etc., the battery cells can be connected in series and parallel, and then the voltage and temperature data of the battery cells are transmitted to the battery.

[0003] In the existing technology, a pressure relief valve is designed on the upper surface of the battery cell. When thermal runaway occurs inside the battery cell, high-temperature and high-pressure liquid and gas will be released from this pressure relief valve. Since the bursting liquid is conductive and the surface of the battery cell shell is positively charged, once these liquids come into contact with the negative electrode of the battery cell, it will cause a short circuit between the positive and negative electrodes of the battery cell, thereby exacerbating heat diffusion and ultimately amplifying the risk of thermal runaway. Utility Model Content

[0004] The purpose of the utility model is to provide a CCS assembly and a battery module, which can solve the problem in the prior art that liquid flowing out through the pressure relief valve due to thermal runaway can easily cause a short circuit between the positive and negative electrodes of the battery cell.

[0005] The embodiment of the present utility model is achieved as follows:

[0006] According to a first aspect of an embodiment of the present invention, a CCS assembly is provided, comprising a bottom plate, a tab, and a partition. The partition, the bottom plate, and the tab are sequentially arranged on a battery cell. A flange is provided along the outer edge of the lower surface of the partition, and the top of the flange is in contact with the upper surface of the battery cell to form a glue injection area between the upper surface of the battery cell, the outer edge of the partition, and the lower surface of the partition. The bottom plate and the partition are both provided with pole avoidance holes, and the pole of the battery cell passes through the pole avoidance holes to connect with the tab. The bottom plate and the tab are both provided with glue injection avoidance holes. The partition is provided with a glue injection column having a glue injection channel, and the glue injection column extends through the glue injection avoidance hole toward a side away from the battery cell. Adhesive is injected into the glue injection area via the glue injection channel. This CCS assembly can solve the problem in the prior art that liquid flowing out through the pressure relief valve due to thermal runaway can easily cause a short circuit between the positive and negative poles of the battery cell.

[0007] As an implementation method, a receiving groove is provided on the bottom plate, the tab is accommodated in the receiving groove, and glue overflow holes are provided on the bottom plate and the partition, and part of the adhesive flows into the receiving groove through the glue overflow holes.

[0008] As an implementation method, the outer diameter of the glue injection column is larger than the inner diameter of the glue injection avoidance hole, so that the glue injection column and the glue injection avoidance hole are interference fit.

[0009] As an implementation method, a spacer block is provided on the lower surface of the partition, and the lower surface of the spacer block is in contact with the upper surface of the battery cell. Along the connection direction of two adjacent battery cells, the width of the spacer block is greater than the distance between two adjacent battery cells.

[0010] As an implementable embodiment, a sealant is provided between the top end of the flange, the lower surface of the spacer, and the upper surface of the battery cell.

[0011] As an implementation method, there are multiple accommodating grooves, and the multiple accommodating grooves are relatively arranged along the connection direction of two adjacent battery cells to form two groups of accommodating grooves, and a card slot for accommodating the collection harness is provided between the two groups of accommodating grooves.

[0012] As an implementable embodiment, a plurality of first bosses are staggeredly arranged on the two groups of accommodating groove groups, a plurality of second bosses and a plurality of pressure relief valve avoidance holes are cross-arranged in sequence between the two groups of accommodating groove groups, and the card groove is formed between adjacent first bosses and second bosses.

[0013] As an implementation method, a plurality of pressure relief valve avoidance holes are arranged at intervals between the two groups of accommodating groove groups, a folded edge is arranged along the outer edge of the pressure relief valve avoidance hole toward the side close to the battery cell, and a seal is arranged between the top end of the folded edge and the upper surface of the battery cell.

[0014] As an implementable embodiment, a heat insulation layer is further provided on the inner side of the folded edge.

[0015] A second aspect of the present invention provides a battery module including the aforementioned CCS assembly. The CCS assembly can solve the prior art problem that liquid flowing out of the pressure relief valve due to thermal runaway can easily cause a short circuit between the positive and negative electrodes of the battery cell.

[0016] The beneficial effects of the embodiments of the present utility model include:

[0017] The CCS assembly includes a base plate, a tab and a partition. The partition, base plate and tab are arranged on the battery cell in sequence. A flange is provided along the outer edge of the lower surface of the partition. The top of the flange is in contact with the upper surface of the battery cell to form a glue injection area between the upper surface of the battery cell, the outer edge of the partition and the lower surface of the partition. Pole avoidance holes are provided on the base plate and the partition. The pole of the battery cell passes through the pole avoidance hole to be connected with the tab. Glue injection avoidance holes are provided on the base plate and the tab. A glue injection column with a glue injection channel is provided on the partition. The glue injection column passes through the glue injection avoidance hole and extends toward the side away from the battery cell. The adhesive is injected into the glue injection area through the glue injection channel. Compared with the existing technology, the CCS component provided in this application uses the bottom plate as a carrier for components such as the tab, which can improve the rapid assembly of the battery module. It also uses a partition with a flange on the outer edge, so that the top of the flange is in contact with the upper surface of the battery cell during assembly to form a glue injection area between the upper surface of the battery cell, the outer edge of the partition and the lower surface of the partition. Then, through the structural design on the bottom plate and the partition (including the pole avoidance hole, the glue injection avoidance hole, and the glue injection column with the glue injection channel), it can avoid affecting the welding of the tab and the pole, and ensure that the adhesive is injected into the glue injection area through the glue injection channel, so as to reduce the risk of battery cell short circuit caused by the conduction between the tab and the upper cover of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is one of the structural diagrams of the battery module provided in an embodiment of the present utility model;

[0020] Figure 2 One of the structural diagrams of the CCS assembly provided in an embodiment of the present utility model;

[0021] Figure 3 The second structural diagram of the CCS assembly provided by the embodiment of the present utility model;

[0022] Figure 4 The third structural diagram of the CCS assembly provided by the embodiment of the present utility model;

[0023] Figure 5 The fourth structural diagram of the CCS assembly provided by the embodiment of the present utility model;

[0024] Figure 6 This is the second structural diagram of the battery module provided in an embodiment of the present utility model.

[0025] Icon: 100-CCS assembly; 10-base plate; 11-pole avoidance hole; 12-glue injection avoidance hole; 13-accommodation groove; 14-first boss; 141-tie hole; 15-second boss; 16-slot; 17-pressure relief valve avoidance hole; 18-glue overflow groove; 20-bar; 21-pole positioning hole; 30-partition; 31-flanged edge; 32-glue injection column; 33-glue overflow hole; 34-spacer; 35-seal; 40-collection harness; 50-voltage collection terminal; 60-temperature collection terminal; 70-signal output connector; 200-battery module; 210-battery cell; A-glue injection area; B-glue pouring area. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] In addition, the terms "horizontal" and "vertical" do not mean that the components must be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", not that the structure must be completely horizontal, but can be slightly tilted.

[0031] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections, indirect connections through an intermediate medium, or connections within two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0032] Please refer to Figures 1 to 6 An embodiment of the present application provides a battery module 200, including a plurality of battery cells 210 and a CCS assembly 100 arranged in sequence. In order to facilitate a clearer explanation and description of the specific structure of the CCS assembly 100, common structures such as the end plate, side plate and plastic steel belt of the battery module 200 are hidden in the accompanying drawings.

[0033] like Figures 2 to 4 As shown, the CCS assembly 100 includes a base plate 10, a tab 20 and a partition 30. The partition 30, the base plate 10 and the tab 20 are sequentially arranged on the battery cell 210. A flange 31 is provided along the outer edge of the lower surface of the partition 30. The top of the flange 31 is in contact with the upper surface of the battery cell 210 to form a glue injection area A between the upper surface of the battery cell 210, the outer edge of the partition 30 and the lower surface of the partition 30. The base plate 10 and the partition 30 are both provided with a pole avoidance hole 11. The pole of the battery cell 210 is connected to the tab 20 through the pole avoidance hole 11. The base plate 10 and the tab 20 are both provided with a glue avoidance hole 12. The partition 30 is provided with a glue injection column 32 with a glue injection channel. The glue injection column 32 extends through the glue injection avoidance hole 12 toward the side away from the battery cell 210, and the adhesive is injected into the glue injection area A through the glue injection channel. The CCS assembly 100 can solve the problem in the prior art that the liquid flowing out through the pressure relief valve due to thermal runaway can easily cause a short circuit between the positive and negative electrodes of the battery cell 210 .

[0034] It should be noted that if Figure 1 、 Figure 3 and Figure 5As shown, the CCS assembly 100 includes a base plate 10 and a tab 20, with the base plate 10 serving as a carrier for the tab 20, the collection harness 40, and the collection terminals (including the voltage collection terminal 50 and the temperature collection terminal 60), so that these components can be more conveniently assembled with the battery cell 210. In this way, in the actual assembly process, the above components can be assembled to the base plate 10 in advance, and then the base plate 10 can be assembled to the battery cell 210, and then the tab 20 on the base plate 10 can be fixedly connected to the pole of the battery cell 210 by welding (such as laser welding). This assembly method has the advantage of being more efficient and suitable for mass production of battery modules 200. Among them, the base plate 10 can be a blister board, that is, the blister process is used to convert plastic particles into blister boards.

[0035] like Figure 2 As shown, in order to ensure that the tab 20 can be welded to the pole of the battery cell 210, a pole avoidance hole 11 is provided on the base plate 10, so that the pole of the battery cell 210 can pass through the pole avoidance hole 11 and connect with the tab 20; in order to improve the accuracy of welding, a pole positioning hole 21 can be provided on the tab 20. When the base plate 10 is assembled on the battery cell 210, a certain gap exists between the pole avoidance hole 11 of the base plate 10 and the upper surface of the battery cell 210 (i.e., the upper cover of the battery cell 210) along the height direction of the battery cell 210. Once the battery cell 210 experiences thermal runaway, if the liquid flowing out of the pressure relief valve flows into the gap, the tab 20 will be connected to the upper cover of the battery cell 210, thereby causing the risk of short circuit of the battery cell 210.

[0036] In order to solve the above problems, Figures 2 to 4 As shown, the CCS assembly 100 also includes a partition 30 to form a relatively sealed space between the pole avoidance hole 11 of the bottom plate 10 and the upper cover of the battery cell 210 through the partition 30, thereby preventing the liquid flowing out through the pressure relief valve from flowing into the sealed space, thereby reducing the risk of short circuit of the battery cell 210 due to conduction between the tab 20 and the upper cover of the battery cell 210.

[0037] Specifically, if Figure 3 and Figure 4As shown, a flange 31 is provided along the outer edge of the lower surface of the partition 30. During the actual assembly process, the partition 30, the bottom plate 10 and the tab 20 are sequentially arranged on the battery cell 210 along the height direction of the battery cell 210. The top end of the flange 31 (i.e., the end away from the bottom plate 10) is in contact with the upper surface of the battery cell 210 to form a glue injection area A (i.e., the above-mentioned sealed space) between the upper surface of the battery cell 210, the outer edge of the partition 30 and the lower surface of the partition 30. Among them, in order to prevent the added partition 30 from affecting the welding between the bar 20 and the pole, a pole avoidance hole 11 is also provided on the partition 30, wherein the contours of the pole avoidance holes 11 on the bottom plate 10 and the partition 30 are adapted to the contours of the pole, and a certain installation gap is reserved; in order to ensure that the adhesive can be smoothly injected into the glue injection area A, glue injection avoidance holes 12 are provided on the bottom plate 10 and the bar 20, and a glue injection column 32 with a glue injection channel is provided on the partition 30, and the glue injection column 32 extends through the glue injection avoidance hole 12 toward the side away from the battery cell 210, thereby, the adhesive (such as glue) can be injected into the glue injection area A through the glue injection channel, thereby encapsulating the upper cover of the battery cell 210, the pole of the battery cell 210 and the bar 20, thereby preventing the liquid flowing out through the pressure relief valve from flowing in.

[0038] Compared with the prior art, the CCS assembly 100 provided in the present application uses the base plate 10 as a carrier for components such as the tab 20, thereby improving the rapid assembly of the battery module 200. The partition 30 is also provided with a flange 31 on the outer edge. During assembly, the top of the flange 31 is fitted into contact with the upper surface of the battery cell 210 to form a glue injection area A between the upper surface of the battery cell 210, the outer edge of the partition 30 and the lower surface of the partition 30. Then, through the structural design on the base plate 10 and the partition 30 (including the pole avoidance hole 11, the glue injection avoidance hole 12, and the glue injection column 32 with the glue injection channel), it can avoid affecting the welding of the tab 20 and the pole, and ensure that the adhesive is injected into the glue injection area A through the glue injection channel, so as to reduce the risk of short circuit of the battery cell 210 due to the conduction between the tab 20 and the upper cover of the battery cell 210.

[0039] Since there is a certain amount of air in the sealed space, as the adhesive is injected, the air will be squeezed to a certain extent, thereby forming a certain pressure. In order to facilitate the discharge of the air, as an implementation method, Figure 6As shown, the base plate 10 is provided with a receiving groove 13, and the tab 20 is accommodated in the receiving groove 13. The profile of the receiving groove 13 matches the profile of the tab 20, and a certain installation gap is reserved. The base plate 10 and the partition plate 30 are both provided with glue overflow holes 33, so that the above-mentioned air can be discharged through the glue overflow holes 33. Of course, since the aperture of the pole avoidance hole 11 should be slightly larger than the outer diameter of the pole for easy assembly, the above-mentioned air can also be discharged through the pole avoidance hole 11. Not only air, but also when the adhesive in the glue injection area A overflows, some excess adhesive can flow into the receiving groove 13 through the glue overflow hole 33 and the pole avoidance hole 11.

[0040] For example, in this embodiment, if Figure 6 As shown, the overflow hole 33 and the injection column 32 are arranged diagonally, so that the overflow hole 33 and the injection column 32 are farther apart. Thus, when the adhesive flows out through the overflow hole 33, it can be considered that the injection area A has been completed and the injection can be stopped. Figure 2 As shown, when glue is subsequently poured into the glue pouring area B from above the CCS assembly 100, it is only necessary to fill the receiving groove 13 (i.e., the glue pouring area B) with glue. To prevent overflowing glue from flowing around, a U-shaped overflow groove 18 can be provided on opposite sides of the bottom plate 10. This not only temporarily stores the overflowed glue in the overflow groove 18, but also helps to enhance the structural strength of the bottom plate 10 along the direction connecting two adjacent battery cells 210.

[0041] As an implementable method, Figure 3 As shown, the outer diameter of the glue injection column 32 is larger than the inner diameter of the glue injection avoidance hole 12, so that the glue injection column 32 and the glue injection avoidance hole 12 have an interference fit. Therefore, through the mutual cooperation between the glue injection column 32 and the glue injection avoidance hole 12, the partition 30, the bottom plate 10 and the tab 20 are connected. Furthermore, to improve the connection strength between the partition 30 and the bottom plate 10, an adhesive can be applied to the contact surface of the partition 30 and the bottom plate 10 to achieve bonding between the partition 30 and the bottom plate 10.

[0042] Since there is an assembly gap between two adjacent battery cells 210, in order to prevent the liquid flowing out of the pressure relief valve from flowing into the assembly gap, as an implementation method, Figure 4 As shown, a spacer block 34 is further provided on the lower surface of the partition 30, and the lower surface of the spacer block 34 is in contact with the upper surface of the battery cell 210, and along the connecting direction of the two adjacent battery cells 210, the width of the spacer block 34 is greater than the distance between the two adjacent battery cells 210, so that the assembly gap between the two adjacent battery cells 210 is blocked by the spacer block 34.

[0043] As an implementable method, Figure 4As shown, a seal 35, such as an elastic sealing ring, an elastic sealing gasket, etc., is provided between the top of the flange 31 and the lower surface of the spacer 34 and the upper surface of the battery cell 210 to further improve the sealing of the injection area A formed between the upper surface of the battery cell 210, the flange 31, the spacer 34 and the lower surface of the partition 30.

[0044] As an implementable method, Figure 5 As shown, in this embodiment, there are multiple accommodating grooves 13, and the multiple accommodating grooves 13 are relatively arranged along the connection direction of two adjacent battery cells 210 to form two groups of accommodating grooves 13 (that is, the multiple accommodating grooves on the left side of the figure constitute one group of accommodating grooves, and the multiple accommodating grooves on the right side constitute another group of accommodating grooves), so as to be connected to the positive and negative poles of the multiple battery cells 210 respectively. A card slot 16 for accommodating the collection harness 40 is provided between the two groups of accommodating grooves 13, so that the collection harness 40 is fixed by the card slot 16, thereby improving the neatness of the wiring on the surface of the base plate 10.

[0045] As an implementable method, Figure 6 As shown, in this embodiment, multiple first bosses 14 are staggered between the two groups of accommodating grooves 13, and multiple second bosses 15 and multiple pressure relief valve avoidance holes 17 are sequentially intersected between the two groups of accommodating grooves 13. A slot 16 is formed between adjacent first bosses 14 and second bosses 15. In this way, the slot 16 formed between the first boss 14 and the adjacent second boss 15 on one group of accommodating grooves 13 can be used to arrange the voltage collection harness 40, and the slot 16 formed between the first boss 14 and the adjacent second boss 15 on the other group of accommodating grooves 13 can be used to arrange the temperature collection harness 40. The advantage of this design is that the linear shape of the slot 16 can prevent the collection harness 40 from bending. The end of the collection harness 40 is connected to the outside through the signal output connector 70, thereby avoiding affecting the reliability of the collection circuit. Furthermore, a cable tie hole 141 is provided on the first boss 14 and the second boss 15 , so that a cable tie can be passed through the cable tie hole 141 to further fix the collection harness 40 in the slot 16 , thereby improving the stability of the installation.

[0046] As an implementable method, Figure 6As shown, a plurality of pressure relief valve avoidance holes 17 are spaced apart between the two groups of accommodating grooves 13. Similar to the flange 31 on the partition 30, a folded edge (not shown) is provided along the outer edge of the pressure relief valve avoidance hole 17 toward the side close to the battery cell 210. The folded edge seals the pressure relief valve avoidance hole 17, thereby preventing liquid flowing out of the pressure relief valve from flowing toward the periphery of the pressure relief valve avoidance hole 17. Furthermore, a sealing member 35 is provided between the top of the folded edge and the upper surface of the battery cell 210 to improve the sealing performance of the pressure relief valve avoidance hole 17. For example, in this embodiment, the pressure relief valve avoidance hole 17 is a waist-shaped hole.

[0047] As an implementable embodiment, a heat-insulating layer (not shown in the figure) is also provided on the inner side of the folded edge. For example, the heat-insulating layer is made of mica to improve the heat resistance of the folded edge, thereby reducing the risk of the folded edge being damaged by high-temperature ablation after thermal runaway occurs.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A CCS component, characterized in that: It includes a bottom plate, a tab and a partition, and the partition, the bottom plate and the tab are arranged on the battery cell in sequence. A flange is provided along the outer edge of the lower surface of the partition, and the top of the flange is in contact with the upper surface of the battery cell to form a glue injection area between the upper surface of the battery cell, the outer edge of the partition and the lower surface of the partition, and the bottom plate and the partition are both provided with pole avoidance holes, and the pole of the battery cell is connected to the tab through the pole avoidance hole, and the bottom plate and the tab are both provided with glue avoidance holes, and the partition is provided with a glue injection column with a glue injection channel, and the glue injection column extends through the glue injection avoidance hole toward the side away from the battery cell, and the adhesive is injected into the glue injection area through the glue injection channel.

2. The CCS assembly according to claim 1, characterized in that The bottom plate is provided with a receiving groove, the tab is received in the receiving groove, and both the bottom plate and the partition are provided with glue overflow holes, part of the adhesive flows into the receiving groove through the glue overflow holes.

3. The CCS assembly according to claim 1, characterized in that The outer diameter of the glue injection column is greater than the inner diameter of the glue injection avoidance hole, so that the glue injection column and the glue injection avoidance hole are interference fit.

4. The CCS assembly according to claim 1, characterized in that A spacer is provided on the lower surface of the partition, the lower surface of the spacer is in contact with the upper surface of the battery cell, and along the connection direction of two adjacent battery cells, the width of the spacer is greater than the distance between the two adjacent battery cells.

5. The CCS assembly according to claim 4, characterized in that A sealing member is provided between the top end of the flange, the lower surface of the spacer and the upper surface of the battery core.

6. The CCS assembly according to claim 2, characterized in that There are multiple accommodating grooves, which are arranged relative to each other along the connection direction of two adjacent battery cells to form two groups of accommodating grooves. A card slot for accommodating a collection harness is provided between the two groups of accommodating grooves.

7. The CCS assembly according to claim 6, characterized in that A plurality of first bosses are staggeredly arranged on the two groups of accommodating grooves, a plurality of second bosses and a plurality of pressure relief valve avoidance holes are sequentially cross-arranged between the two groups of accommodating grooves, and the clamping groove is formed between adjacent first bosses and second bosses.

8. The CCS assembly according to claim 2, characterized in that A plurality of pressure relief valve avoidance holes are arranged at intervals between the two groups of accommodating groove groups, a folded edge is arranged along the outer edge of the pressure relief valve avoidance hole toward the side close to the battery core, and a seal is arranged between the top of the folded edge and the upper surface of the battery core.

9. The CCS assembly according to claim 8, characterized in that A heat insulation layer is also provided on the inner side of the flange.

10. A battery module, characterized in that: The CCS assembly comprises the CCS assembly according to any one of claims 1 to 9.

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