CCS support, CCS assembly and battery pack

Abstract

The utility model provides a CCS support, a CCS assembly and a battery pack, the CCS support comprises a base and a cloud card, the base comprises a bottom plate, a side plate and a baffle plate, the side plate is connected to the bottom plate and is arranged on one side of the bottom plate, the baffle plate is connected to the bottom plate and is arranged on one side of the side plate, a mounting position is arranged between the baffle plate and the side plate, and the mounting position is used for mounting a busbar. The side plate is provided with an installation port, the cloud card is installed in the installation port, and the abutting part abuts against the side, away from the baffle, of the side plate. The size of the mounting opening can be set in the side plate according to the size of the cloud card, the opening size of the mounting opening is reduced, the glue overflowing amount is reduced, and the abutting part abuts against the side, away from the baffle, of the side plate, so that glue overflowing of the heat-conducting glue can be further blocked, and the situation that the heat-conducting function of the battery is affected by glue overflowing is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a CCS support, a CCS assembly and a battery pack. BACKGROUND

[0002] Power batteries have advantages of long service life, high safety performance and large capacity, and have become the power source of many tools. The cell contacting system (CCS) in the power battery is the core part of the battery safety monitoring center, and plays a crucial role in the safety performance of the power battery. In the related technology, the busbars in the CCS are limited by buckles, and the integral buckle limiting is prone to glue overflow during glue pouring when the busbars and the module are assembled, because the buckle hole is large. CONTENT OF THE UTILITY MODEL

[0003] Embodiments of the present application provide a CCS support, a CCS assembly and a battery pack, which can improve the technical problem that the busbar in the CCS support is prone to sliding.

[0004] In a first aspect, embodiments of the present application provide a CCS support for placing busbars, comprising:

[0005] a base comprising a bottom plate, a side plate and a baffle, the side plate being connected to the bottom plate and arranged on one side of the bottom plate, the baffle being connected to the bottom plate and arranged on one side of the side plate, and an installation site being provided between adjacent baffles and side plates, the installation site being used for installing busbars;

[0006] a cloud buckle, the side plate being provided with a mounting opening, the cloud buckle being mounted in the mounting opening and used for preventing the busbars from being separated from the installation site, the cloud buckle comprising an abutting portion, the abutting portion abutting on a side of the side plate away from the baffle.

[0007] In some embodiments, the cloud buckle is detachably inserted into the mounting opening, and / or;

[0008] the cloud buckle is fixedly connected to the mounting opening.

[0009] In some embodiments, the cloud buckle comprises a connecting portion and a limiting portion, the connecting portion being connected to the abutting portion and penetrating the mounting opening, the limiting portion being connected to an end of the connecting portion away from the abutting portion, and a projection of the limiting portion on a plane of the installation site being located within a projection of the busbar on the plane of the installation site.

[0010] In some embodiments, the CCS support further comprises a fixing protrusion, the fixing protrusion being arranged on a side of the baffle facing the adjacent side plate, so as to cooperate with the cloud buckle to limit the movement of the busbar away from the bottom plate.

[0011] In some embodiments, the CCS bracket comprises a plurality of limiting members, each of the limiting members is connected to one side of each of the baffles facing the other baffle, the limiting member is an arc-shaped structure bent towards the direction of the bottom plate, and the limiting member is used for clamping a wire harness arranged on the bottom plate.

[0012] In some embodiments, the limiting member is a resilient structure, and the limiting member can be elastically deformed away from the direction of the bottom plate.

[0013] In some embodiments, the bottom plate is provided with a hole slot corresponding to each of the limiting members, and the hole slot penetrates through the bottom plate along the thickness direction of the bottom plate.

[0014] In some embodiments, the bottom plate is provided with a plurality of glue grooves on the side away from the limiting member, and the glue groove is provided with a glue joint, and the glue joint is flush with the side of the bottom plate away from the cloud card.

[0015] In a second aspect, the application provides a CCS assembly, comprising:

[0016] The CCS bracket as described above;

[0017] A plurality of busbars, each of the busbars is installed in the mounting position of the CCS bracket.

[0018] In some embodiments, the CCS bracket further comprises a plurality of partition plates, and the plurality of partition plates are arranged between adjacent side plates and baffles, and each of the partition plates is provided with a busbar on both sides, and the partition plate is used for limiting the displacement of the busbar in the direction parallel to the bottom plate.

[0019] In a third aspect, the application further provides a battery pack comprising the CCS assembly as described above.

[0020] The beneficial effects of the embodiments of the application are as follows:

[0021] In the embodiment of the present application, the CCS support includes a base and a cloud card, the base includes a bottom plate, a side plate connected to the bottom plate and arranged on one side of the bottom plate, and a baffle connected to the bottom plate and arranged on one side of the side plate, and a mounting position is arranged between the baffle and the side plate, and the mounting position is used for mounting a busbar. The side plate is provided with a mounting port, and the cloud card is mounted in the mounting port. The cloud card includes an abutting portion which abuts against one side of the side plate away from the baffle. In the related art, due to the one-piece buckle limiting structure, the buckle needs a certain space for movement, and the clamping hole of the side plate is generally designed to be larger than the buckle for giving way, and more glue overflow occurs when the periphery of the busbar is glued. In the CCS assembly of the present application, the cloud card is an independent component, the size of the mounting port of the side plate can be set according to the size of the cloud card, the opening size of the mounting port is reduced, and the amount of glue overflow is reduced. Since the abutting portion abuts against one side of the side plate away from the baffle, the overflow of the heat-conducting glue can be further blocked, and the influence of the glue overflow on the heat conduction function of the battery is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0023] Figure 1 is a structural schematic diagram of a CCS assembly provided by the embodiment of the present application;

[0024] Figure 2 is a structural schematic diagram of a CCS support shown in Figure 1 ;

[0025] Figure 3 is another structural schematic diagram of a CCS assembly shown in Figure 1 ;

[0026] Figure 4 is an enlarged schematic diagram of part A of a CCS assembly shown in Figure 3 ;

[0027] Figure 5 is still another structural schematic diagram of a CCS assembly shown in Figure 1 ;

[0028] Figure 6 is an enlarged schematic diagram of part B of a CCS assembly shown in Figure 5 ;

[0029] Figure 7 is a bottom view of a CCS assembly shown in Figure 1 .

[0030] REFERENCE SIGNS:

[0031] 200, CCS assembly; 100, CCS bracket;

[0032] 10, base; 11, bottom plate; 111, glue groove; 12, side plate; 121, mounting port; 13, baffle; 14, partition plate; 15, mounting position;

[0033] 20, bus bar; 21, glue filling area;

[0034] 30, cloud card; 31, abutting portion; 311, abutting plate; 312, protrusion; 32, limiting portion;

[0035] 40, fixing protrusion;

[0036] 50, wire harness;

[0037] 60, limiting piece; 61, limiting groove; 62, hole groove. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application. In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, the orientation words such as "upper" and "lower" generally refer to the upper and lower in the actual use or working state of the device, and specifically refer to the direction of the drawing surface in the drawings; and "inner" and "outer" refer to the outline of the device.

[0039] The present application provides a CCS (i.e. battery stringing system, Cell Contacting System) bracket and a CCS assembly, which is a system for ensuring electrical connection and thermal management between battery units, and is very crucial for the performance and safety of the battery pack. Please refer to Figures 1-3 , Figure 1 is a structural schematic diagram of the CCS assembly provided by the embodiments of the present application, Figure 2 is a structural schematic diagram of the CCS bracket shown in Figure 1 , Figure 3 is another structural schematic diagram of the CCS assembly shown in Figure 1 .

[0040] The CCS support 100 comprises a base 10, including a bottom plate 11, two side plates 12 connected to the bottom plate 11 and arranged on one side of the bottom plate 11, and a baffle plate 13 connected to the bottom plate 11 and arranged on one side of the side plate 12. An installation position 15 is arranged between the baffle plate 13 and the side plate 12, and the installation position 15 is used to install the busbar 20. The CCS support 100 further comprises a cloud card 30. The side plate 12 is provided with a mounting port 121, and the cloud card 30 is installed in the mounting port 121 to prevent the busbar 20 from being separated from the installation position 15. The cloud card 30 comprises an abutting portion 31 abutting on one side of the side plate 12 away from the baffle plate 13.

[0041] Specifically, the CCS support 100 comprises two side plates 12 and two baffle plates 13, and the two side plates 12 and the two baffle plates 13 form two rows of installation positions 15 for placing the busbar 20. A plurality of grooves can be formed between adjacent side plates 12 and baffle plates 13, and each groove is provided with one busbar 20. The adjacent busbars 20 are electrically connected. A glue pouring area 21 is further formed in the groove. Each groove is provided with at least two glue pouring areas 21, and the shape of the glue pouring area 21 is matched with the shape of the busbar 20, and the glue pouring area 21 is used to pour heat-conducting silica gel. One end of one row of busbars 20 is connected to a positive plate, and the other end is connected to a negative plate. The positive plate is connected to the positive electrode of the battery cell, and the negative plate is connected to the negative electrode of the battery cell, so as to connect the battery cells in series or parallel.

[0042] In some examples, the side plate 12 is provided with a plurality of mounting ports 121, and each busbar 20 corresponds to one mounting port 121. Since the grooves are formed between the side plate 12 and the baffle plate 13, the busbar 20 is arranged in the groove, and the mounting port 121 is arranged on the side of the busbar 20 away from the bottom plate 11. After the cloud card 30 is installed in the mounting port 121, the cloud card 30 is located in the groove and can block the busbar 20.

[0043] Please refer to Figure 4 , Figure 4 is Figure 3 the enlarged schematic view of the partial A of the CCS assembly shown in FIG. 1. The cloud card 30 comprises an abutting portion 31, a limiting portion 32, and a connecting portion. The connecting portion is connected to the abutting portion 31 and penetrates the mounting port 121. The limiting portion 32 is connected to one end of the connecting portion away from the abutting portion 31, i.e., one end of the connecting portion facing the baffle plate 13. The projection of the limiting portion 32 on the plane of the installation position 15 is located in the projection of the busbar 20 on the plane of the installation position 15. Since the size of the battery is limited, the height of the side plate 12 is not high, i.e., the distance between the cloud card 30 and the busbar 20 is relatively close. When the limiting portion 32 is located directly above the busbar 20 away from the bottom plate 11, the movement of the busbar 20 away from the bottom plate 11 can be limited.

[0044] In some examples, the limiting part 32 includes two limiting blocks arranged at intervals. In actual applications, the limiting part 32 can be a limiting surface, or a larger number of limiting blocks can be arranged, and the specific structure of the limiting part 32 is not limited in the present application.

[0045] In some examples, the abutting part 31 includes an abutting plate 311 and a protrusion 312. The area of the abutting plate 311 is larger than the area of the mounting port 121. When the limiting part 32 is arranged in the mounting port 121, the limiting part 32 is connected to one side of the abutting plate 311, and the protrusion 312 is connected to the other side of the abutting plate 311. The protrusion 312 can facilitate the user to take the cloud card 30. The protrusion 312 can be arc-shaped toward the side of the user, so as to further improve the safety in use.

[0046] In the prior art, because the buckle needs a certain space for movement in the integrated buckle limiting structure, the clamping hole of the side plate is generally designed to be larger than the buckle to provide space for the buckle. When the glue is poured on the periphery of the busbar 20, more glue overflow occurs. In the CCS support 100 of the present application, the base 10 and the cloud card 30 are independent components. When the side plate 12 is manufactured, the size of the mounting port 121 can be set according to the size of the cloud card 30, so as to reduce the opening size of the mounting port 121 and reduce the amount of glue overflow. Because the abutting part 31 abuts against the side of the side plate 12 away from the baffle 13, the overflow of the heat-conducting glue can be further blocked, so as to avoid the influence of the glue overflow on the heat conduction function of the battery.

[0047] In addition, the limiting method of the busbar 20 in the CCS is usually fixed by means of hot riveting and buckling. However, the busbar 20 in the existing hot riveting process does not have a displacement adjustment function and cannot control the position of the busbar 20. Although the buckle limiting can solve the problem that the busbar 20 cannot be adjusted, the buckle and the busbar 20 are prone to sliding before being assembled and welded, which causes abnormal welding. In the present application, the size of the mounting port 121 is set according to the size of the cloud card 30, so that the cloud card 30 and the mounting port 121 are better matched, the cloud card 30 is less likely to be loosened, the effect of limiting the displacement of the busbar 20 is better, and the problem of abnormal welding caused by the sliding of the busbar 20 can be avoided. During the installation of the cloud card 30, the displacement of the busbar 20 can be limited by taking out the cloud card 30, adjusting the position, and then reinstalling the cloud card 30. Both the adjustability and the problem of shaking displacement during the process of CCS flow are solved.

[0048] In some embodiments, the cloud card 30 can be detachably inserted into the mounting port 121. Specifically, after the welding of the busbar 20 is completed, the cloud card 30 can be taken out for repeated use. When the cloud card 30 fails, only the faulty cloud card 30 needs to be replaced or repaired, and the entire device does not need to be replaced, so as to further reduce the maintenance cost.

[0049] In some embodiments, the cloud card 30 is fixedly connected to the mounting port 121. Specifically, after the busbar 20 is welded, the cloud card 30 is not removed, but is directly filled with glue and the overflow glue is blocked, so that the cloud card 30 is glued to the side plate 12. Since the cloud card 30 is no longer disassembled, the assembly process can be reduced. In addition, since the mounting port 121 is closed, the heat-conducting glue cannot overflow from the mounting port 121, the amount of overflow glue can be further reduced, and the heat-conducting effect is ensured.

[0050] Please refer to Figures 5-6 , Figure 5 is Figure 1 another structural schematic view of the CCS assembly shown in FIG. 8, Figure 6 is Figure 5 an enlarged schematic view of part B of the CCS assembly shown in FIG. 8. In some embodiments, the CCS support 100 further comprises a fixing protrusion 40 provided on one side of the baffle plate 13 facing the adjacent side plate 12 to cooperate with the cloud card 30 to limit the movement of the busbar 20 away from the bottom plate 11. Specifically, each fixing protrusion 40 is a triangular block structure, which includes a flat surface facing the busbar 20 and an inclined surface connected between the baffle plate 13 and the flat surface, and can be limited by the flat surface when the busbar 20 moves away from the bottom plate 11.

[0051] In some embodiments, the fixing protrusion 40 and the baffle plate 13 can be an integrally formed structure, and the fixing protrusion 40 is provided with two fixing protrusions 40 and is spaced apart. Each fixing protrusion 40 limits the displacement of one end of the busbar 20, and the two fixing protrusions 40 and the cloud card 30 form a triangular limiting range as a whole. A conventional one-piece limiting buckle generally has four limiting points due to a certain activity error. However, in the present application, the cloud card 30 has high stability, and only three limiting points formed by the cooperation of the cloud card 30 and the two fixing protrusions 40 can achieve the same limiting effect.

[0052] In some embodiments, the CCS support 100 comprises a plurality of limiting members 60, each limiting member 60 being connected to one side of each baffle plate 13 facing the other baffle plate 13 for fixing the wire harness 50 provided on the bottom plate 11. Specifically, the CCS assembly 200 comprises a wire harness 50 connected to a controller and extending from one end of the bottom plate 11 to the other end and connected to each busbar 20. A threading groove is provided on the baffle plate to facilitate the connection of the wire harness 50 to the busbar 20. The wire harness 50 passes through the threading groove and transmits the collected voltage, current and temperature parameter information to the controller for monitoring and management by the controller. Since the limiting member 60 is connected to one side of each baffle plate 13 facing the other baffle plate 13, it does not protrude from the CCS support 100, and when the wire harness 50 enters the CCS support 100, it can be fixed between the two baffle plates 13, thereby improving the compactness and neatness of the CCS assembly 200.

[0053] In addition, the limiting member 60 is an arc-shaped structure bent towards the bottom plate 11, and the bus bars 20 are arranged on both sides of the bottom plate 11 in the length direction of the bottom plate 11. A plurality of limiting members 60 are arranged on the baffle 13 at intervals, and each limiting member 60 can be arranged between two adjacent bus bars 20. Compared with the prior art, the CCS support of the present application changes the straight limiting into arc limiting, and the arc limiting has a longer bending length and higher smoothness, can basically wrap the entire wire harness 50, and will not scratch the wire harness 50, so as to meet the design requirement that the wire harness 50 is easy to assemble but not easy to fall out.

[0054] In some embodiments, the limiting member 60 is an elastic structure, and the limiting member 60 can be elastically deformed away from the bottom plate 11. Specifically, one end of the limiting member 60 is connected to the baffle 13, and the other end is a movable end. The limiting member 60 forms an arc-shaped limiting groove 61, and when the wire harness 50 is arranged in the limiting groove 61, the limiting member 60 is elastically deformed due to the thickness of the wire harness 50 or displacement. Within the deformation range, the limiting member 60 can still limit the wire harness 50. The elastic structure can reduce the difficulty of the assembly operation of the wire harness 50 and improve the yield.

[0055] In some embodiments, the bottom plate 11 is provided with a hole groove 62 corresponding to each limiting member 60, and the hole groove 62 penetrates the bottom plate 11 in the thickness direction of the bottom plate 11. The hole groove 62 is arranged on the side of the baffle 13 away from the bus bar 20, and the projection of the limiting member 60 on the bottom plate 11 is larger than the size of the hole groove 62. It can be understood that after the wire harness 50 is installed, part of the wire harness 50 will be bent and located in the hole groove 62. The arc limiting and the hole groove 62 are used in cooperation to facilitate the wiring of the wire harness 50, so that the wire harness 50 can pass through the hole groove 62 to connect the battery cell, and avoid surface damage of the wire harness 50 caused by multiple bending.

[0056] Please refer to Figure 7 , Figure 7 is Figure 1 the bottom view of the CCS assembly shown in FIG. 11. In some embodiments, the bottom plate 11 is provided with a plurality of glue grooves 111 on the side away from the baffle 13. The plurality of glue grooves 111 are located in the middle of the bottom plate 11 and are arranged at intervals in the direction parallel to the length of the bottom plate 11. A glue joint is arranged in the glue groove 111, and the glue joint is flush with the side of the bottom plate 11 away from the cloud card 30. Specifically, the type of glue joint can be selected according to the actual application requirement, such as silicone, polyurethane glue or heat-conducting glue. The glue groove 111 has a certain thickness, and the glue joint with a specified thickness can be assembled into the glue groove 111 during operation. Compared with the conventional bottom surface all pasted with glue, the setting of the glue groove 111 can improve the product consistency, ensure the flatness of the bottom surface of the bottom plate 11, and also reduce the amount of glue joint.

[0057] The CCS assembly 200 provided by the application comprises the CCS support 100 and a plurality of busbars 20. Each busbar 20 is installed in the mounting position 15 of the CCS support 100, and each wire harness 50 is connected to a busbar 20.

[0058] In some embodiments, the CCS support 100 further comprises a plurality of partitions 14 which are arranged between the adjacent side plates 12 and the baffle plates 13. Each partition 14 is provided with a busbar 20 on each side. The partition 14 is used to limit the displacement of the busbar 20 in the direction parallel to the bottom plate 11. It can be understood that the cloud card 30 and the fixing protrusion 40 are used to limit the displacement of the busbar 20 in the direction perpendicular to the bottom plate 11, and the partition 14 is used to limit the displacement of the busbar 20 in the direction parallel to the bottom plate 11. The displacement of the busbar 20 is limited in the horizontal direction and the vertical direction, thereby increasing the stability of the structure of the busbar 20. In addition, the deformation of the busbar 20 caused by collision and extrusion can be avoided, thereby improving the safety performance.

[0059] In some examples, the side plate 12, the baffle plate 13 adjacent to the side plate 12, and the plurality of partitions 14 between the side plate 12 and the baffle plate 13 form a busbar containing structure. The containing structure is an integral forming structure, and the containing structure is arranged on both sides of the bottom plate 11. The adjacent two partitions 14 and the oppositely arranged side plate 12 and baffle plate 13 form a groove for containing the busbar 20. A plurality of limiting members 60 are arranged on the baffle plate 13 at intervals, and each limiting member 60 is arranged corresponding to a partition 14.

[0060] The application further provides a battery pack (not shown in the figure) comprising the CCS assembly 200 and a battery cell. The busbar 20 of the CCS assembly 200 is connected to the battery cell. By installing the CCS assembly 200 as described above, the welding abnormality caused by the sliding of the busbar 20 can be avoided, thereby improving the stability of the battery pack. The battery cell comprises a plurality of battery monomers. The battery monomer can be a primary battery, a secondary battery, or a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, etc. The battery monomer can be in the shape of a cylinder, a flat body, a cuboid, or other shapes, which are not limited in the application.

[0061] The embodiments of the application are described in detail above, and the specific examples are applied to the principles and implementation modes of the application. The above description of the embodiments is only used to help understand the method of the application and its core idea; meanwhile, for those skilled in the art, the specific implementation mode and application range can be changed according to the idea of the application. In summary, the content of the specification should not be understood as a limitation of the application.

Claims

1. A CCS bracket, which is used to place a busbar, characterized in that: include: The base includes a bottom plate, a side plate and a baffle, wherein the side plate is connected to the bottom plate and is disposed on one side of the bottom plate, and the baffle is connected to the bottom plate and is disposed on one side of the side plate. A mounting position is provided between the baffle and the side plate, and the mounting position is used to mount a busbar; The cloud card has a mounting opening on the side panel, and the cloud card is mounted on the mounting opening to prevent the bus from being separated from the mounting position. The cloud card includes an abutment portion, and the abutment portion abuts against the side of the side panel away from the baffle.

2. The CCS bracket according to claim 1, characterized in that: The cloud card is detachably plugged into the installation port; and / or; The cloud card is fixedly connected to the installation port.

3. The CCS bracket according to any one of claims 1-2, characterized in that: The cloud card includes a connecting part and a limiting part, the connecting part is connected to the abutting part and passes through the installation port, the limiting part is connected to one end of the connecting part away from the abutting part, and the projection of the limiting part on the plane where the installation position is located is located within the projection of the bus on the plane where the installation position is located.

4. The CCS bracket according to any one of claims 1-2, characterized in that: The CCS bracket further includes a fixing protrusion, which is provided on a side of the baffle facing the adjacent side plate to cooperate with the cloud card to limit the movement of the busbar away from the bottom plate.

5. The CCS bracket according to any one of claims 1-2, characterized in that: include: The CCS bracket includes a plurality of limit members, each of which is connected to one side of each baffle facing the other baffle. The limit member is an arc-shaped structure bent toward the bottom plate, and is used to clamp the wiring harness set on the bottom plate.

6. The CCS bracket according to claim 5, characterized in that: The limiting member is an elastic structure, and the limiting member can generate elastic deformation in a direction away from the bottom plate.

7. The CCS bracket according to claim 5, characterized in that: The bottom plate is provided with a hole corresponding to each of the limiting members, and the hole penetrates the bottom plate along the thickness direction of the bottom plate.

8. The CCS bracket according to any one of claims 1-2, characterized in that: A plurality of adhesive grooves are provided on a side of the bottom plate away from the baffle, and adhesive connectors are provided in the adhesive grooves. The adhesive connectors are flush with a side of the bottom plate away from the cloud card.

9. A CCS component, characterized in that: include: The CCS bracket according to any one of claims 1 to 8; A plurality of busbars are installed in a mounting position of the CCS bracket.

10. The CCS assembly according to claim 9, characterized in that The CCS bracket further includes a plurality of partitions, which are spaced apart between adjacent side plates and baffles. A bus is provided on both sides of each partition, and the partition is used to limit the displacement of the bus in a direction parallel to the bottom plate.

11. A battery pack, characterized in that: Comprising the CCS assembly according to claim 9 or 10.

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