CCS assembly and battery pack

Abstract

The invention discloses a CCS assembly and a battery pack, the CCS assembly is fixed on a battery cell module, the battery cell module comprises a plurality of battery cell bodies stacked along a first direction, and each battery cell body comprises an upward explosion-proof opening and a pole. The CCS assembly comprises a fireproof part, the fireproof part extends in the first direction and is fixed to the battery cell module, the explosion-proof openings face the fireproof part, and the projection of the fireproof part on the battery cell module can cover all the explosion-proof openings; the acquisition wire harness is fixed on the fireproof part; and the busbar is fixedly connected with the acquisition wire harness and the pole. According to the CCS assembly, a traditional support is omitted, the fireproof part with the fireproof function is added, the collection wire harness and the busbar are fixed through the fireproof part, the CCS assembly forms a module structure, the machining technology is simplified, cost is saved, and meanwhile fireproof performance and safety are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery packs, and in particular to a CCS component and a battery pack. Background Art

[0002] During the application process, the battery pack needs to cooperate with the BMS (Battery Management System) to collect temperature and voltage signals for battery management. Existing battery packs mostly use CCS (Cells Contact System) components to connect the cells in series and in parallel as well as collect temperature and voltage signals in the battery pack. Conventional CCS components include components such as busbars, brackets, and collection harnesses. When in use, components such as busbars and collection harnesses are mostly integrated on the bracket. After being assembled into the battery pack, glue is usually poured on the entire CCS component to bond and fix the aluminum busbars and collection harnesses to the bracket. This type of CCS component has a high processing load, is costly, and does not have a fireproof function, and cannot protect the battery pack well. Summary of the invention

[0003] In order to overcome the above-mentioned shortcomings, the purpose of the present invention is to provide a CCS component and a battery pack, which eliminates the traditional bracket and adds fireproof parts with fireproof function. The fireproof parts are used to fix the collection harness and bus, so that the CCS component forms a modular structure, simplifies the processing technology, saves costs, and at the same time increases fireproof performance and improves safety.

[0004] In order to achieve the above purpose, the technical solution adopted by the present invention is: a CCS component is fixed on a battery module, the battery module includes a plurality of battery bodies stacked along a first direction, each of the battery bodies includes an explosion-proof port and a pole facing upward, and the CCS component includes: A fireproof member, the fireproof member extends along a first direction and is fixed on the battery module, the explosion-proof opening faces the fireproof member, and the projection of the fireproof member on the battery module can cover all the explosion-proof openings; A collection harness, wherein the collection harness is fixed on the fireproof member; A bus bar is fixedly connected to the collection harness and the pole. The beneficial effects of the present invention are: The bracket is removed, fireproof parts are added, and the busbar and collection harness are fixed with fireproof parts, so that the CCS components form an integral module; The fireproof parts are directly fixed on the battery cell module without the need for additional mounting structures, thus simplifying the structure and facilitating installation.

[0005] The fireproof parts and explosion-proof openings are opposite to each other. When a battery cell body of a battery cell module experiences thermal runaway, the explosion-proof opening ruptures and sprays out flames and high-temperature particles. At this time, the flames and high-temperature particles are blocked by the fireproof parts. Different battery cell modules will not affect each other, nor will they affect other structures of the battery pack, thus avoiding collective thermal runaway of the battery cell modules and the battery pack, greatly improving the safety of the battery pack.

[0006] Furthermore, the collection harness is fixed to the upper surface of the fireproof component by means of fixing glue, and the collection harness and the fireproof component can be quickly fixed by means of the fixing glue.

[0007] Furthermore, the fireproof member includes multiple fireproof layers, which are fixed and pasted in the vertical direction, and the collection harness is fixed between two adjacent fireproof layers. In this case, the collection harness is encapsulated in the fireproof member, and the connection between the collection harness and the fireproof member is more stable.

[0008] Specifically, the fireproof member is fixed with an upwardly extending abutment block on the upper surface away from the battery module in the vertical direction, and the abutment block can press part of the fireproof member against the battery module. The abutment block abuts against the upper cover of the battery pack, and the abutment block is restricted from moving upward by the upper cover, that is, the abutment block is pressed downward by the upper cover to press the fireproof member against the surface of the battery module.

[0009] Furthermore, a cavity corresponding to the explosion-proof opening is formed between the fireproof member and the battery module, and when the explosion-proof opening is broken, the flame and high-temperature particles ejected from the explosion-proof opening are confined in the cavity. The fireproof member needs to make way for the explosion-proof opening to break through, and at the same time provide storage space for the ejected high-temperature particles, so a cavity covering all the explosion-proof openings is formed between the fireproof member and the battery module, and at this time, multiple explosion-proof openings of the battery module all correspond to this cavity.

[0010] Furthermore, the fireproof component includes a top fireproof portion and a first side fireproof portion and a second side fireproof portion connected at both ends of the top fireproof portion in a second direction, the top fireproof portion is located directly above the explosion-proof opening and has a distance between it and the explosion-proof opening, and the first side fireproof portion and the second side fireproof portion extend toward the direction close to the battery cell module and abut against the battery cell module.

[0011] A cavity is formed between the first side fireproof part, the second side fireproof part, the top fireproof part and the battery cell model, the top fireproof part is used to prevent the flame and high-temperature particles from spreading upward, and the first side fireproof part and the second side fireproof part are used to prevent the flame and high-temperature particles from spreading along the second direction. The first side fireproof part and the second side fireproof part are glued and fixed to the battery cell module.

[0012] Furthermore, the fireproof component also includes a first reinforcement portion extending from the lower end of the first side fireproof portion toward a side away from the second side fireproof portion, and / or the fireproof component also includes a second reinforcement portion extending from the lower end of the second side fireproof portion toward a side away from the first side fireproof portion, and the first reinforcement portion, the second reinforcement portion and the battery module abut against each other. The first reinforcement portion and the second reinforcement portion increase the fixing area between the fireproof component and the battery module, making the fireproof component and the battery module more firmly attached. At the same time, it prevents the flame and high-temperature particles in the cavity from overflowing from the cavity.

[0013] Specifically, the abutment block only abuts against the first reinforcement part and the second reinforcement part, and a sealed channel is formed between the first reinforcement part and the second reinforcement part and the battery module. The abutment block only abuts against the first reinforcement part and the second reinforcement part to improve the sealing performance of the sealed channel, and the abutment block will not contact the top fireproof part, so it will not squeeze the top fireproof part, avoiding deformation of the cavity formed by the fireproof part.

[0014] Furthermore, the CCS assembly further comprises a temperature sensor, the temperature sensor is fixedly connected to the collection harness, and the temperature sensor is fixed on the fireproof component or the bus bar. The temperature sensor is also a component of the CCS module and can be fixed by the fireproof component.

[0015] The present invention further discloses a battery pack, comprising a shell, wherein a battery cell module is arranged in the shell, and the above-mentioned CCS assembly is fixed on the battery cell module. The CCS assembly forms a module, which is then assembled with the battery cell module. The shell is pressed down on the battery cell module using the part that abuts the block diameter fireproof part, and the fireproof part improves the safety of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the three-dimensional structure of the CCS assembly in an embodiment of the present invention; Figure 2 is a side view of a CCS assembly in an embodiment of the present invention; Figure 3 Schematic diagram of the three-dimensional structure of the fireproof member in the embodiment of the present invention; Figure 4 is a cross-sectional view of a battery pack according to an embodiment of the present invention; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 It is a schematic diagram of the three-dimensional structure of the battery pack after removing the upper cover in an embodiment of the present invention; Figure 7 A schematic diagram of the connection between the battery cell module and the integrated busbar assembly in an embodiment of the present invention; Figure 8 Schematic diagram of the structure of the battery cell body in an embodiment of the present invention.

[0017] In the figure: 100.CCS components; 1. Fireproof part; 11. Top fireproof part; 12. First side fireproof part; 13. Second side fireproof part; 14. First reinforcement part; 141. Placement hole; 15. Second reinforcement part; 16. Cavity; 2. Busbar; 3. Collection harness; 31. Bus; 32. Branch line; 33. Terminal; 4. abutment block; 41. give way groove; 200. Battery cell module; 5. Battery body; 51. Positive pole; 52. Negative pole; 53. Explosion-proof port; 300, housing; 61. lower shell; 62. upper cover; 400, BMS. DETAILED DESCRIPTION The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0018] In the description of this application, unless otherwise clearly specified and limited, the terms "first", "second", and "first" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance; unless otherwise specified or explained, the term "plurality" means more than two, including two; the terms "connected", "fixed", etc. should be understood in a broad sense, for example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] In the description of the present application, in all the drawings, the direction indicated by the arrow X is the first direction, the direction indicated by the arrow Y is the second direction, and the direction indicated by the arrow Z is the vertical direction.

[0020] See attached Figure 7 As shown, a CCS assembly 100 of the present invention is used to connect a battery cell module 200 and a BMS 400 . The CCS assembly 100 and the battery cell module 200 correspond one to one, and the CCS assembly 100 is located above the corresponding battery cell module 200 .

[0021] See attached Figure 7 As shown, the battery cell module 200 includes a plurality of battery cell bodies 5 stacked along a first direction, see FIG. Figure 8As shown, each battery cell body 5 includes an explosion-proof opening 53 facing upward and poles, the poles include a positive pole and a negative pole, and the positive pole and the negative pole are respectively located on both sides of the second direction of the explosion-proof opening 53. When the pressure in the battery cell body 5 is too high, the explosion-proof opening 53 will open, and flames and high-temperature particles will be ejected from the explosion-proof opening 53. A battery cell module 200 includes multiple explosion-proof openings 53, and the multiple explosion-proof openings 53 are distributed along the first direction.

[0022] The CCS assembly 100 is fixed on the battery cell module 200. Figure 1 As shown, the CCS assembly 100 includes a fire protection component 1 , a collection harness 3 and a busbar 2 .

[0023] The fireproof member 1 plays a supporting and fireproofing role. The fireproof member 1 extends along the first direction and is fixed on the battery module 200. The explosion-proof opening 53 faces the fireproof member 1. The projection of the fireproof member 1 on the battery module 200 can cover all the explosion-proof openings 53. At this time, the fireproof member 1 can provide fire protection for all the explosion-proof openings 53 of a battery module 200. The collection harness 3 is fixed on the fireproof member 1. At this time, the collection harness 3 and the fireproof member 1 form a module structure. The bus 2 is fixedly connected to the collection harness 3 and the pole. The bus 2 is fixed to the fireproof member 1 through the collection harness 3, and the bus 2 is fixed to the pole by welding. The bus 2 collects the signal of the battery module and transmits it to the BMS400 through the collection harness 3.

[0024] Compared with the CCS assembly 100 composed of a bracket, a collection harness 3 and a bus 2 in the prior art, the CCS assembly 100 in this embodiment only has a fireproof component 1, a collection harness 3 and a bus 2, and the bracket is discarded, which greatly saves costs. At the same time, the fireproof component 1 is added. On the one hand, the fireproof component 1 plays a fireproof role. When a battery body 5 of the battery module 200 has a thermal runaway, the explosion-proof port 53 ruptures and sprays out flames and high-temperature particles. At this time, since the position of the fireproof component 1 corresponds to the explosion-proof port 53 and the explosion-proof port 53 faces the fireproof component 1, the flames and high-temperature particles are blocked by the fireproof component 1. Different battery modules 200 will not affect each other, nor will they affect other structures of the battery pack, avoiding the collective thermal runaway of the battery module 200 and the battery pack, and greatly improving the safety of the battery pack. On the other hand, the fireproof member 1 replaces the bracket to play a supporting role, and the collection harness 3 is fixed on the bracket and fixed to the bus 2. At this time, the fireproof member 1, the bus 2 and the collection harness 3 form an integral module, and this module is fixed to the battery module 200. In this embodiment, the CCS assembly 100 using the protective member to replace the bracket does not need to set up a bracket, and has a fireproof function. The fireproof member 1 is directly fixed to the battery module 200, and there is no need to set up an additional fixing mechanism, which improves safety and saves costs.

[0025] In this embodiment, the fireproof member 1 is made of fireproof material, and the fireproof material needs to be resistant to high temperatures so that the flame will not melt the fireproof member 1, thereby playing a role in fire prevention.

[0026] The fireproof element 1 is usually a composite component, which can be formed by multiple fireproof layers in the vertical direction. The fireproof layers can be made of the same material or different materials. For example, the fireproof layer is made of mica material. Since the melting point of mica material is very high, it can meet the fire resistance requirements of the fireproof element 1. Different fireproof layers are glued and fixed.

[0027] In one embodiment, the collection harness 3 is fixed to the upper surface of the fireproof component 1 by means of fixing glue, and the collection harness 3 and the fireproof component 1 can be quickly fixed by means of the fixing glue.

[0028] In one embodiment, the collection harness 3 is fixed to the fireproof member 1 during the processing of the fireproof member 1, and the collection harness 3 is fixed between two adjacent fireproof layers. That is, when the two fireproof layers are pasted, the collection harness 3 is fixed between the two fireproof layers.

[0029] See attached Figure 5 As shown, a cavity 16 corresponding to the explosion-proof opening 53 is formed between the fireproof member 1 and the battery module 200. When the explosion-proof opening 53 is broken, the flame and high-temperature particles ejected from the explosion-proof opening 53 are confined in the cavity 16, which may cause damage to other components outside the cavity 16. The fireproof member 1 cannot be closely attached to the explosion-proof opening 53, and needs to make way for the explosion-proof opening 53 to break through, while providing storage space for the ejected high-temperature particles. Therefore, a cavity 16 covering all the explosion-proof openings 53 is formed between the fireproof member 1 and the battery module 200. At this time, all the explosion-proof openings 53 of the battery module 200 correspond to this cavity 16.

[0030] See attached Figure 2 and attached Figure 3As shown, the fireproof part 1 includes a top fireproof part 11 and a first side fireproof part 12 and a second side fireproof part 13 connected to both ends of the top fireproof part 11 in the second direction. The top fireproof part 11 extends along the first direction, and the second direction is also the length direction of the top fireproof part 11. The top fireproof part 11 is located directly above the explosion-proof opening 53 and there is a gap between the top fireproof part 11 and the explosion-proof opening 53. The top fireproof part 11 is used to prevent the flame and high-temperature particles from spreading upward. The first side fireproof part 12 and the second side fireproof part 13 extend in the direction close to the battery module 200 and abut against the battery module 200. The fixing glue is arranged on the lower surface of the first side fireproof part 12 and the second side fireproof part to fix the first side fireproof part 12 and the second side fireproof part 13 to the battery module. The first side fireproof part 12 and the second side fireproof part 13 are used to prevent the flame and high-temperature particles from spreading to both sides of the second direction. The distance between the first side fire protection portion 12 and the second side fire protection portion is greater than the diameter of the explosion-proof opening 53 , and the first side fire protection portion 12 and the second side fire protection portion 13 are respectively located on both sides of the explosion-proof opening 53 in the second direction.

[0031] The top fireproof part 11, the first side fireproof part 12 and the second side fireproof part 13 have the same length in the first direction. At this time, a cavity 16 is formed between the first side fireproof part 12, the second side fireproof part 13, the top fireproof part 11 and the battery cell model, and the explosion-proof opening 53 faces this cavity 16, and the cavity 16 can cover all the explosion-proof openings 53 on the corresponding battery cell module 200.

[0032] In one embodiment, the fireproof member 1 further includes a third side fireproof portion and a fourth side fireproof portion connected to both ends of the top fireproof portion 11 in the first direction, the third side fireproof portion and the fourth side fireproof portion extend toward the direction close to the battery module 200, and respectively abut against the two battery cell bodies 5 at both ends of the first direction of the battery module 200. All explosion-proof openings 53 on the battery module 200 are located between the third side fireproof portion and the fourth side fireproof portion, and the third side fireproof portion and the fourth side fireproof portion are used to prevent the flame and high-temperature particles from spreading to both sides of the first direction.

[0033] The third side fireproof part and the fourth side fireproof part are pasted and fixed to the battery module. At this time, the cavity 16 is a closed structure. The flames and high-temperature particles ejected through the explosion-proof hole 53 are confined in the cavity 16 and will not spread outside the cavity 16 at all.

[0034] In one embodiment, the fireproof part 1 also includes at least one of a first reinforcement part 14 and a second reinforcement part 15. The first reinforcement part 14 extends along the lower end of the first side fireproof part 12 toward a side away from the second side fireproof part 13, and the second reinforcement part 15 extends along the lower end of the second side fireproof part 13 toward a side away from the first side fireproof part 12. The first reinforcement part 14 and the second reinforcement part 15 are both against the battery module 200 and fixed to the battery module 200 by fixing glue. The first reinforcement part 14 and the second reinforcement part 15 increase the fixing area between the fireproof component and the battery module 200, making the fireproof part 1 and the battery module more firmly attached. At the same time, a sealed channel is formed between the first reinforcement part 14, the second reinforcement part 15 and the battery module 200. This sealed channel increases the sealing performance and prevents the flame and high-temperature particles in the cavity 16 from overflowing the cavity 16.

[0035] When the explosion-proof opening 53 is broken, if the impact force is large, the fireproof member 1 may be impacted upward, and the fireproof member 1 and the battery module 200 are separated, and the sealing of the sealing channel is destroyed, and the fireproofing effect cannot be well played. Therefore, in one embodiment, the fireproof member 1 is fixed with an upwardly extending abutment block 4 on the upper surface away from the battery module 200 in the vertical direction, and the abutment block 4 can press part of the fireproof member 1 against the battery module 200.

[0036] See attached Figure 4 and attached Figure 5 As shown, the abutment block 4 abuts against the upper cover 62 of the battery pack, and the abutment block 4 is restricted by the upper cover 62 to move upward, that is, the abutment block 4 is pressed downward by the upper cover 62 to press the components of the fireproof member 1 against the surface of the battery cell module 200. The abutment block 4 only abuts against the first reinforcement portion 14 and the second reinforcement portion 15 to improve the sealing performance of the sealing channel. At the same time, the abutment block 4 will not contact the top fireproof portion 11, and will not squeeze the top fireproof portion 11, thereby avoiding deformation of the cavity 16 formed by the fireproof member 1.

[0037] The abutment block 4 is an integral structure, and a clearance groove 41 corresponding to the top fireproof part 11, the first side fireproof part 12 and the second side fireproof part 13 is provided on the abutment block 4, that is, the top fireproof part 11, the first side fireproof part 12 and the second side fireproof part are in the clearance groove 41 but not against the abutment block 4. At this time, the pressure on the abutment block 4 will not be transmitted to the top fireproof part 11, the first side fireproof part 12 and the second side fireproof part, and the abutment block 4 only presses down the first reinforcement part 14 and the second reinforcement part 15. At this time, the collection harness 3 fixed on the upper surface of the fireproof part 1 can also pass through this clearance groove 41.

[0038] In one embodiment, the abutment block 4 includes a first abutment block 4 portion and a second abutment block 4 portion. The first abutment block 4 portion and the second abutment block 4 portion are separate structures. The first abutment block 4 portion and the second abutment block 4 portion abut against the first reinforcement portion 14 and the second reinforcement portion 15 respectively.

[0039] The abutment block 4 is made of foam, which is low in cost and has a certain elasticity, and will not damage the fireproof member 1 and the battery module 200 due to the excessive pressure applied by the upper cover 62. The abutment block 4 is fixed to the fireproof member 1 by a fixing glue, and the fixing glue and the fireproof member 1 form an integral module.

[0040] In one embodiment, the abutting block 4 extends along the first direction, and the two ends of the abutting block 4 and the fire-proofing element 1 in the first direction are flush.

[0041] In one embodiment, in order to save materials, see the attached Figure 1 As shown, the abutment blocks 4 are arranged at intervals along the first direction, and the effect of pressing the fireproof element 1 can also be achieved.

[0042] In one embodiment, the abutment block 4 may not be additionally provided, and the thickness of the first reinforcement portion 14 and the second reinforcement portion 15 may be set thicker until the first reinforcement portion 14 and the second reinforcement portion 15 directly abut against the upper cover 62 .

[0043] See attached Figure 1 As shown, the collection harness 3 includes a bus 31 and a branch line 32. The bus 31 extends in a first direction. The end of the bus 31 extends out of the fireproof part 1 and is connected to a terminal 33. The terminal 33 is plugged into the BMS 400. The branch line 32 is arranged corresponding to the bus 2. The branch line 32 extends in a second direction. The branch lines 32 are gathered to form the bus 31. One end of the branch line 32 extends out of the fireproof part 1 and is fixedly connected to the corresponding bus 2. For example, the branch line 32 is welded and fixed to the return bar.

[0044] See attached Figure 8 As shown, in this embodiment, the explosion-proof opening 53 is set in the middle position, and the two ends of the explosion-proof opening 53 in the second direction are respectively provided with a positive pole 51 and a negative pole 52, so see the attached Figure 1 As shown, the busbar 2 is arranged on both sides of the second direction of the fireproof member 1, and the fireproof member 1 is fixed between the positive pole 51 and the negative pole 52, so that the poles are not blocked, and the busbar 2 and the poles are welded. The positions of the fireproof member 1 and the busbar 2 are designed according to the positions of the explosion-proof opening 53 and the poles, but the fireproof member 1 needs to fix the busbar 2 through the collection harness 3.

[0045] In this embodiment, the fireproof element 1 is an integrated structure formed by punching and bending a plate.

[0046] In one embodiment, the CCS assembly 100 further includes a temperature sensor, which is fixedly connected to the collection harness 3 , and is fixed on the fireproof component 1 or the bus 2 , and is used to collect the temperature of the battery cell module 200 .

[0047] See attached Figure 1 As shown, a placement hole 141 is provided on the fireproof member 1, and the temperature sensor is fixed in the placement hole 141. The placement hole 141 is not connected to the cavity 16, so that the flame and high-temperature particles entering the cavity 16 will not damage the temperature sensor. The placement hole 141 is provided on the first reinforcement part 14 and the second reinforcement part 15.

[0048] The CCS assembly 100 in this embodiment has been assembled to form a module before being assembled with the battery cell module 200 .

[0049] In one embodiment, the processing of the CCS assembly 100 includes: S1. During the processing of the fireproof member 1, the collection harness 3 is encapsulated in the fireproof member 1. At this time, one end of the branch line 32 of the collection harness 3 extends out of the fireproof member 1 along the second direction.

[0050] S2, the collection harness 3 and the bus bar 2 are welded and fixed.

[0051] S3. A placement hole 141 is opened on the first reinforcement part 14 and the second reinforcement part 15 of the fireproof component 1 , and the temperature sensor is fixed in the placement hole 141 and fixed to the corresponding branch line 32 of the collection harness 3 .

[0052] S4. Fix the abutment member on the upper surface of the fireproof member 1.

[0053] At this time, the CCS assembly 100 is processed and has formed an integral module structure, and the fireproof member 1 is then pasted on the battery module 200. The order of steps S2-S4 can be changed.

[0054] In one embodiment, step S1 in the processing technology of the CCS assembly 100 can be changed to, after the fireproof component 1 is processed, the collection harness 3 is pasted and fixed on the upper surface of the fireproof component 1, and at this time, the branch line 32 of the collection harness 3 extends out of the fireproof component 1 along the second direction along one end.

[0055] The present invention also discloses a battery pack, including the above-mentioned CCS component 100. The CCS component 100 is a module. After the CCS component 100 is assembled, it is connected to the battery cell module 200. The CCS component 100 integrates a fireproof component 1, and there is no need to add an additional fixing mechanism. At the same time, the traditional bracket is discarded, and the fireproof component 1 is used to fix the collection wiring harness 3 and the bus 2, which simplifies the processing, saves materials, and greatly reduces the cost.

[0056] See attached Figure 6 As shown, the battery pack includes a shell 300, and the shell 300 includes a lower shell 61 with an opening at the upper end, and an upper cover 62 is provided at the opening, and the upper cover 62 covers the opening and can be fixed to the lower shell 61. A receiving cavity is formed between the lower shell 61 and the upper cover 62, and at least one battery cell module 200 is fixed in the receiving cavity. The CCS assembly 100 corresponds to the battery cell module 200 and is located above the battery cell module 200. The upper cover 62 can limit the height position of the abutment, and press the fireproof member 1 downward through the abutment to press the first reinforcement part 14 and the second reinforcement part 15 of the fireproof member 1 downward on the battery cell module 200, and the fireproof member 1 improves the safety of the battery.

[0057] The cell module 200 includes a plurality of cells stacked along a first direction, and the explosion-proof opening 53 of each cell faces the fireproof member 1. The fireproof member 1 can effectively prevent the flame and high-temperature particles generated when the cell body 5 is thermally runaway, and prevent the flame and high-temperature particles from escaping to other spaces of the placement cavity and affecting other components. At the same time, the fireproof member 1 fixes the collection harness 3, and connects the bus 2 through the collection harness 3, so that the CCS assembly 100 forms an integral module.

[0058] In one embodiment, see the attached Figure 7 As shown, two battery cell modules 200 are provided, and the two battery cell modules 200 are distributed along the second direction. At this time, two CCS assemblies 100 are also provided.

[0059] See attached Figure 6 As shown, a BMS400 is also fixed in the placement cavity. The BMS400 is arranged near the terminal 33. The terminal 33 connected to the collection harness 3 is plugged into the BMS400 to transmit the collected information to the BMS400 in real time.

[0060] In this embodiment, the battery pack has been processed to form a modular CCS assembly 100 during assembly, and then the battery body 5 is arranged in the lower shell 61 to form a battery module 200, and the CCS bar assembly is placed on the battery module 200, and the fireproof member 1 and the battery module 200 are glued and fixed. At this time, the fireproof member 1 is located directly above the explosion-proof opening 53. The busbar 2 is welded to the pole, and the terminal 33 is plugged into the BMS 400. Finally, the upper cover 62 is covered, and the upper cover 62 is used to press part of the CCS assembly 100 onto the battery module 200. The above implementation modes are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A CCS assembly fixed on a cell module, wherein the cell module comprises a plurality of cell bodies stacked along a first direction, each of the cell bodies comprising an explosion-proof opening and a pole facing upward, characterized in that: The CCS components include: A fireproof member, the fireproof member extends along a first direction and is fixed on the battery module, the explosion-proof opening faces the fireproof member, and the projection of the fireproof member on the battery module can cover all the explosion-proof openings; A collection harness, wherein the collection harness is fixed on the fireproof member; A bus bar is fixedly connected to the collection harness and the pole.

2. The CCS assembly according to claim 1, characterized in that: The collection harness is fixed to the upper surface of the fireproof component by means of fixing glue.

3. The CCS assembly according to claim 1, characterized in that: The fireproof component comprises a plurality of fireproof layers, the plurality of fireproof layers are pasted and fixed in a vertical direction, and the collection harness is fixed between two adjacent fireproof layers.

4. The CCS assembly according to any one of claims 1 to 3, characterized in that: An abutment block extending upward is fixed on the upper surface of the fireproof member away from the battery cell module in the vertical direction, and the abutment block can press part of the fireproof member against the battery cell module.

5. The CCS assembly according to claim 4, characterized in that: A cavity corresponding to the explosion-proof opening is formed between the fireproof component and the battery module. When the explosion-proof opening is broken, the flame and high-temperature particles ejected from the explosion-proof opening are confined in the cavity.

6. The CCS assembly according to claim 5, characterized in that: The fireproof component includes a top fireproof portion and a first side fireproof portion and a second side fireproof portion connected to both ends of the top fireproof portion in a second direction. The top fireproof portion is located directly above the explosion-proof opening and has a distance between it and the explosion-proof opening. The first side fireproof portion and the second side fireproof portion extend toward the direction approaching the battery cell module and abut against the battery cell module.

7. The CCS assembly according to claim 6, characterized in that: The fireproof component also includes a first reinforcement portion extending from the lower end of the first side fireproof portion toward a side away from the second side fireproof portion, and / or the fireproof component also includes a second reinforcement portion extending from the lower end of the second side fireproof portion toward a side away from the first side fireproof portion, and the first reinforcement portion, the second reinforcement portion and the battery cell module abut against each other.

8. The CCS assembly according to claim 7, characterized in that: The abutting block only abuts against the first reinforcing part and the second reinforcing part, and a sealed channel is formed between the first reinforcing part, the second reinforcing part and the battery cell module.

9. The CCS assembly according to claim 1, characterized in that: The CCS component also includes a temperature sensor, which is fixedly connected to the collection harness and fixed on the fireproof part or the bus.

10. A battery pack, characterized in that: It comprises a shell, in which a battery cell module is arranged, and on which the CCS assembly according to any one of claims 1 to 9 is fixed.

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