A CCS protective cover, a CCS assembly and a battery pack

Abstract

This invention relates to the field of battery technology, and more particularly to a CCS protective cover, a CCS module, and a battery pack. The CCS protective cover provided by this invention is installed at the location where the output stage aluminum busbar and the connecting copper busbar are electrically connected. The CCS protective cover includes a protective shield with a first clearance portion on its side, facing the connecting copper busbar, allowing the connecting copper busbar to extend into the protective shield and electrically connect to the output stage aluminum busbar through the first clearance portion. By providing the first clearance portion on the side of the protective shield, the connecting copper busbar can directly connect to the output stage aluminum busbar inside the protective shield through the first clearance portion, eliminating the need to bend the connecting copper busbar to extend into the protective shield, thus reducing the processing cost of the connecting copper busbar. By applying the above-mentioned CCS protective cover, the CCS module and battery pack eliminate the need for a bending process to ensure the connecting copper busbar extends into the CCS protective cover, further reducing the processing cost of the connecting copper busbar.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and in particular to a CCS protective cover, a CCS assembly, and a battery pack. Background Technology

[0002] With economic development and technological advancements, power batteries are widely used in industries such as electric vehicles. To ensure that power batteries can operate within specified voltage and temperature ranges, CCS (integrated busbar) modules are required to collect voltage and temperature signals from each battery module within the battery pack.

[0003] In existing technologies, CCS (Computer-Controlled System) modules typically include an output-stage aluminum busbar, a CCS bracket, and a CCS protective cover. The CCS bracket integrates the output-stage aluminum busbar and the data acquisition circuit board. The output-stage aluminum busbar is electrically connected to the connecting copper busbars of each series-connected battery module. The CCS protective cover is placed on the CCS bracket to protect the area where the output-stage aluminum busbar and the connecting copper busbar are electrically connected. Because the connecting copper busbar needs to extend into the CCS protective cover to make electrical connections with the output-stage aluminum busbar, it needs to be bent so that it extends into the CCS protective cover from the bottom. This bending process significantly increases the processing cost of the connecting copper busbar.

[0004] Therefore, there is an urgent need for a CCS protective cover, CCS assembly, and battery pack to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a CCS protective cover, a CCS assembly, and a battery pack that can ensure the connecting copper busbars extend into the CCS protective cover without bending them, thereby reducing the processing cost of the connecting copper busbars.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A CCS protective cover is provided at the location where the output stage aluminum busbar and the connecting copper busbar are electrically connected. The CCS protective cover includes:

[0008] A protective cover has a first clearance position on its side, which is positioned towards the connecting copper busbar so that the connecting copper busbar can extend into the interior of the protective cover through the first clearance position and be electrically connected to the output stage aluminum busbar.

[0009] As a preferred embodiment, the protective cover has the first clearance position provided on at least two sides, and the CCS protective cover further includes:

[0010] The protective side plate is provided at each of the first clearance positions. The protective side plate is loosely connected to the protective cover. The protective side plate can be disconnected from the protective cover so that the connecting copper busbar can extend into the interior of the protective cover through the exposed first clearance position and be electrically connected to the output stage aluminum busbar.

[0011] As a preferred embodiment, the protective side plate includes a plurality of spaced-apart dummy connecting blocks, all of which are located at the connection between the protective side plate and the protective cover, and the dummy connecting blocks are dummyly connected to the protective cover.

[0012] As a preferred embodiment, the virtual connecting block is in the shape of a frustum.

[0013] As a preferred embodiment, the CCS protective cover also includes elastic arms. The elastic arms are provided on both opposite sides of the protective cover. The two elastic arms are inserted into two corresponding slots on the CCS bracket that carries the output stage aluminum busbar, and the elastic arms and the corresponding slots are interference fit.

[0014] As a preferred embodiment, the elastic arm includes a first side wall plate, a bottom plate, and a second side wall plate connected in sequence. The first side wall plate and the second side wall plate are arranged at intervals relative to each other. The first side wall plate is connected to the protective cover. The first side wall plate, the bottom plate, and the second side wall plate are all inserted into the corresponding snap-fit ​​grooves.

[0015] As a preferred embodiment, the elastic arm is provided with a second clearance position, which penetrates through the first side wall plate and the second side wall plate, and is used to avoid the connecting copper busbar and the protective side plate.

[0016] As a preferred embodiment, the elastic arm further includes an extension plate connected to the second sidewall plate, and the extension plate extends in a direction away from the first sidewall plate to extend out of the snap-fit ​​groove.

[0017] As a preferred embodiment, the elastic arm is provided with a first locking head, which is locked and fixed to a second locking head on the groove wall of the locking groove, and the interference length between the first locking head and the second locking head is 0.3mm to 0.5mm.

[0018] As a preferred embodiment, the first card head is provided with a first card insertion angle, the angle of which is 30° to 60°.

[0019] A CCS assembly includes an output stage aluminum busbar, a CCS bracket, and a CCS protective cover as described above. The output stage aluminum busbar is supported on the CCS bracket, and the CCS protective cover is inserted and fixed on the CCS bracket. The CCS protective cover is used to protect the part where the output stage aluminum busbar is electrically connected to the connecting copper busbar.

[0020] A battery pack includes a connecting copper busbar and a plurality of battery modules, the connecting copper busbar being configured to connect the plurality of battery modules in series, the battery pack also including a CCS component as described above, the connecting copper busbar being electrically connected to the output stage aluminum busbar.

[0021] The beneficial effects of this invention are:

[0022] The CCS protective cover provided by the present invention includes a protective cover, and a first clearance position is provided on the side of the protective cover. The first clearance position is arranged facing the connecting copper busbar so that the connecting copper busbar can extend into the interior of the protective cover through the first clearance position and be electrically connected to the output stage aluminum busbar. There is no need to bend the connecting copper busbar to extend into the protective cover, which reduces the processing cost of the connecting copper busbar.

[0023] The present invention also provides a CCS component. By applying the above-mentioned CCS protective cover, the connecting copper busbar does not need to be bent to extend into the CCS protective cover, thus reducing the processing cost of the connecting copper busbar.

[0024] The present invention also provides a battery pack that, by applying the above-mentioned CCS component, eliminates the need for a bending process to allow the connecting copper busbar to extend into the CCS protective cover, thereby reducing the processing cost of the connecting copper busbar. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the CCS component provided in an embodiment of the present invention;

[0026] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0027] Figure 3 This is a schematic diagram of the structure of the CCS protective cover provided in an embodiment of the present invention;

[0028] Figure 4 This is a cross-sectional view of the CCS protective cover provided in an embodiment of the present invention.

[0029] In the picture:

[0030] 10. CCS protective cover; 1. Protective cover; 11. First clearance position; 12. Third clearance position; 2. Protective side plate; 21. Loose connecting block; 3. Flexible arm; 31. First side wall plate; 32. Base plate; 33. Second side wall plate; 331. First locking head; 3311. First locking guide angle; 34. Outer plate; 35. Second clearance position;

[0031] 20. Output stage aluminum busbar;

[0032] 30. CCS bracket; 301. Snap-fit ​​slot; 302. Second snap-fit ​​head; 3021. Second snap-fit ​​guide angle. Detailed Implementation

[0033] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0037] This embodiment provides a CCS component, which is mainly used to acquire voltage and temperature signals from each battery module within a battery pack. Specifically, as... Figure 1 and Figure 2As shown, the CCS assembly provided in this embodiment includes an output-stage aluminum busbar 20, a CCS bracket 30, and a CCS protective cover 10. The output-stage aluminum busbar 20 is supported on the CCS bracket 30, and the CCS protective cover 10 is inserted and fixed to the CCS bracket 30. The CCS protective cover 10 protects the portion of the output-stage aluminum busbar 20 that is electrically connected to the connecting copper busbar. Furthermore, it should be noted that a data acquisition circuit board (not shown in the figure) is integrated on the CCS bracket 30. The data acquisition circuit board is electrically connected to the output-stage aluminum busbar 20, and the connecting copper busbar enables series connection between the various battery modules, allowing the data acquisition circuit board to acquire voltage signals from the battery modules. A temperature sensor can also be integrated on the data acquisition circuit board to acquire temperature signals from the battery modules. In this embodiment, the CCS bracket 30 is a plastic bracket to ensure its electrical insulation. Since the specific principle of the data acquisition circuit board acquiring voltage and temperature signals from the battery modules is prior art, it will not be described further here.

[0038] Since the connecting copper busbar needs to extend into the CCS protective cover 10 to make electrical connection with the output stage aluminum busbar 20, the connecting copper busbar needs to be bent so that it extends from the bottom of the CCS protective cover 10 into the CCS protective cover 10. This bending process greatly increases the processing cost of the connecting copper busbar.

[0039] To solve the above problems, such as Figure 2 and Figure 3 As shown, the CCS protective cover 10 provided in this embodiment includes a protective cover 1. A first clearance position 11 is provided on the side of the protective cover 1. The first clearance position 11 is oriented towards the connecting copper busbar, so that the connecting copper busbar can extend into the interior of the protective cover 1 through the first clearance position 11 and electrically connect with the output stage aluminum busbar 20. By providing the first clearance position 11 on the side of the protective cover 1, the connecting copper busbar can be directly electrically connected to the output stage aluminum busbar 20 inside the protective cover 1 through the first clearance position 11, without the need to bend the connecting copper busbar to extend into the protective cover 1, thus reducing the processing cost of the connecting copper busbar. It should be noted that the first clearance position 11 is oriented towards the connecting copper busbar, which ensures that the connecting copper busbar and the first clearance position 11 are directly opposite each other, so that the connecting copper busbar does not need to be bent and can directly extend into the interior of the protective cover 1 through the first clearance position 11.

[0040] Preferably, in this embodiment, such as Figure 2 and Figure 3As shown, the protective cover 1 has a first clearance position 11 on at least two sides. The CCS protective cover 10 also includes a protective side plate 2. Each first clearance position 11 is blocked by a protective side plate 2. The protective side plate 2 is loosely connected to the protective cover 1. The protective side plate 2 can be disconnected from the protective cover 1 so that the connecting copper busbar can extend into the interior of the protective cover 1 through the exposed first clearance position 11 and be electrically connected to the output stage aluminum busbar 20. Specifically, when the connecting copper busbar needs to extend into the interior of the protective cover 1 from the first clearance position 11 where the protective side plate 2 is located, the protective side plate 2 at that location can be disconnected from the protective cover 1 to expose the first clearance position 11, thus facilitating the passage of the connecting copper busbar. Meanwhile, the protective side plates 2 at other first clearance positions 11 remain loosely connected to the protective cover 1, preventing external dust, solder slag, and other foreign matter from entering the CCS protective cover 10, ensuring the protective effect of the CCS protective cover 10. Furthermore, this allows the connecting copper busbar to extend into the CCS protective cover 10 from multiple directions and electrically connect with the output stage aluminum busbar 20, improving the applicability of the CCS protective cover 10. It should be noted that "loosely connected" means that the protective side plate 2 and the protective cover 1 are connected under normal conditions, but under external force, the protective side plate 2 and the protective cover 1 can be easily broken, thus disconnecting the protective side plate 2 from the protective cover 1.

[0041] Specifically, in this embodiment, the protective cover 1 has a first clearance position 11 on each of its three sides. After the output stage aluminum busbar 20 is bent, it extends into the CCS protective cover 10 through the bottom of the remaining side of the protective cover 1, thereby allowing the connecting copper busbar to extend into the CCS protective cover 10 from three directions. It should be noted that in other embodiments, the protective cover 1 can also have a first clearance position 11 on each of its four sides, so that the output stage aluminum busbar 20 does not need to be bent and can directly extend into the CCS protective cover 10 through the corresponding first clearance position 11.

[0042] Preferably, such as Figure 3 As shown, the protective side plate 2 includes multiple spaced-apart dotted connecting blocks 21, all located at the connection between the protective side plate 2 and the protective cover 1, and the dotted connecting blocks 21 are loosely connected to the protective cover 1. When it is necessary to disconnect the protective side plate 2 from the protective cover 1, the protective side plate 2 can be bent directly, at which time the dotted connecting blocks 21 will disconnect from the protective cover 1 under the action of external force. In this embodiment, the protective side plate 2 includes three spaced-apart dotted connecting blocks 21. In other embodiments, the number of dotted connecting blocks 21 can be set to two, four or even more, as long as it can be easily disconnected from the protective cover 1 under the action of external force. Specifically, in this embodiment, the dotted connecting blocks 21 are frustum-shaped, and the top surface of the frustum with a small area is loosely connected to the protective cover 1, which not only ensures the structural strength of the dotted connecting blocks 21, but also facilitates the disconnection of the dotted connecting blocks 21 from the protective cover 1 under the action of external force.

[0043] In the prior art, when the CCS protective cover 10 is inserted into the CCS bracket 30, the CCS protective cover 10 is prone to shaking after assembly, which greatly reduces the reliability of the CCS protective cover 10 installed on the CCS bracket 30.

[0044] To solve the above problems, such as Figure 2 and Figure 3 As shown, the CCS protective cover 10 also includes elastic arms 3. Elastic arms 3 are provided on both opposite sides of the protective cover 1. Two snap-fit ​​slots 301 are provided on the CCS bracket 30. The two elastic arms 3 are inserted into the two snap-fit ​​slots 301 in a one-to-one correspondence, and the elastic arms 3 and their corresponding snap-fit ​​slots 301 are interference-fitted. By setting the elastic arms 3 to insert into the snap-fit ​​slots 301 on the CCS bracket 30, the stability of the CCS protective cover 10 inserted into the CCS bracket 30 is ensured, and the elastic deformation of the elastic arms 3 facilitates insertion into the snap-fit ​​slots 301, making installation convenient. It should be noted that in this embodiment, the elastic arms 3 can be made of PC+ABS material, which has the advantage of good flexibility.

[0045] Specifically, the elastic arm 3 includes a first side wall plate 31, a bottom plate 32, and a second side wall plate 33 connected in sequence. The first side wall plate 31 and the second side wall plate 33 are arranged at intervals relative to each other. The first side wall plate 31 is connected to the protective cover 1. The first side wall plate 31, the bottom plate 32, and the second side wall plate 33 are all inserted into corresponding snap-fit ​​slots 301. This design of the elastic arm 3 allows for compression of the elastic arm 3 when it needs to be pulled out of or inserted into the snap-fit ​​slot 301, thereby reducing the gap between the first side wall plate 31 and the second side wall plate 33. When the compression force on the elastic arm 3 is removed, the elastic arm 3 returns to its original shape under its own elastic force, ensuring the tightness of the elastic arm 3 in the snap-fit ​​slot 301.

[0046] It should be noted that, in this embodiment, the elastic arm 3 is provided with a second clearance position 35, which penetrates through the first side wall plate 31 and the second side wall plate 33. The second clearance position 35 is used to avoid the connecting copper busbar and the protective side plate 2, so as to avoid the elastic arm 3 interfering with the penetration of the connecting copper busbar.

[0047] In addition, such as Figure 2 and Figure 3As shown, the elastic arm 3 also includes an extension plate 34, which is connected to the second side wall plate 33 and extends in a direction away from the first side wall plate 31 to extend out of the locking groove 301. By providing the extension plate 34, when it is necessary to pull the elastic arm 3 out of the locking groove 301 or insert the elastic arm 3 into the locking groove 301, the extension plates 34 on both elastic arms 3 can be pressed inward simultaneously, thereby reducing the distance between the first side wall plate 31 and the second side wall plate 33 on the two elastic arms 3 in a synchronous manner, making the operation convenient.

[0048] Preferably, in this embodiment, a first locking head 331 is provided on the outer side wall of the second side wall plate 33, and a second locking head 302 is provided on the groove wall of the locking groove 301. The first locking head 331 and the second locking head 302 are locked together and fixed, and the interference length between the first locking head 331 and the second locking head 302 is 0.3mm to 0.5mm, ensuring that the elastic arm 3 is in a compressed state within the locking groove 301, further ensuring the stability of the elastic arm 3 locked in the locking groove 301. In this embodiment, the interference length between the first locking head 331 and the second locking head 302 is preferably 0.4mm.

[0049] Furthermore, in this embodiment, the first locking head 331 is provided with a first locking guide angle 3311, and the second locking head 302 is provided with a second locking guide angle 3021. The angles of the first locking guide angle 3311 and the second locking guide angle 3021 are the same, and the angle of the first locking guide angle 3311 is 30° to 60°. This provides a guiding function for the locking operation of the elastic arm 3 in the locking groove 301, facilitating the locking and fixing of the first locking head 331 and the second locking head 302. Preferably, in this embodiment, the angles of the first locking guide angle 3311 and the second locking guide angle 3021 are both 45°.

[0050] Furthermore, in this embodiment, such as Figure 4 As shown, the protective cover 1 is recessed in the direction away from the output stage aluminum busbar 20 to form a third clearance position 12. The third clearance position 12 is used to avoid the part where the connecting copper busbar and the output stage aluminum busbar 20 are electrically connected, thereby avoiding interference of the protective cover 1 to the part where the connecting copper busbar and the output stage aluminum busbar 20 are electrically connected, making the structure of the entire CCS protective cover 10 more compact.

[0051] This embodiment also provides a battery pack, which includes a connecting copper busbar and multiple battery modules. The connecting copper busbar is used to connect the multiple battery modules in series. The battery pack also includes the aforementioned CCS component, and the connecting copper busbar is electrically connected to the output stage aluminum busbar 20. The battery pack provided in this embodiment, by applying the aforementioned CCS component, eliminates the need for a bending process to limit the extension of the connecting copper busbar into the CCS protective cover 10, thereby reducing the processing cost of the connecting copper busbar.

[0052] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A CCS protective cover, characterized by, The CCS protective cover is installed at the point where the output stage aluminum busbar (20) and the connecting copper busbar are electrically connected. The CCS protective cover includes: A protective cover (1) is provided on the side of the protective cover (1), and the first clearance position (11) is provided facing the connecting copper busbar so that the connecting copper busbar extends into the interior of the protective cover (1) through the first clearance position (11) and is electrically connected to the output stage aluminum busbar (20). The protective cover (1) is provided with the first clearance position (11) on at least two sides, and the CCS protective cover further includes: The protective side plate (2) is provided at each of the first clearance positions (11). The protective side plate (2) is loosely connected to the protective cover (1). The protective side plate (2) can be disconnected from the protective cover (1) so that the connecting copper busbar can extend into the interior of the protective cover (1) through the exposed first clearance position (11) and be electrically connected to the output stage aluminum busbar (20). The CCS protective cover also includes elastic arms (3). The protective cover (1) is provided with elastic arms (3) on both sides. The two elastic arms (3) are connected to the two snap-fit ​​slots (301) on the CCS bracket (30) that carries the output stage aluminum busbar (20) in a one-to-one correspondence. The elastic arms (3) and the corresponding snap-fit ​​slots (301) are interference fit. The elastic arm (3) includes a first side wall plate (31), a bottom plate (32) and a second side wall plate (33) connected in sequence. The first side wall plate (31) and the second side wall plate (33) are arranged at intervals relative to each other. The first side wall plate (31) is connected to the protective cover (1). The first side wall plate (31), the bottom plate (32) and the second side wall plate (33) are all inserted into the corresponding snap-fit ​​groove (301). The elastic arm (3) is provided with a first locking head (331), which is locked and fixed to a second locking head (302) on the groove wall of the locking groove (301), and the interference length between the first locking head (331) and the second locking head (302) is 0.3mm to 0.5mm. The elastic arm (3) is provided with a second clearance position (35), which passes through the first side wall plate (31) and the second side wall plate (33) and is located below the first clamp head (331). The second clearance position (35) is used to avoid the connecting copper busbar and the protective side plate (2).

2. The CCS protective cover of claim 1, wherein, The protective side plate (2) includes a plurality of spaced-apart dummy connecting blocks (21), and the plurality of dummy connecting blocks (21) are located at the connection between the protective side plate (2) and the protective cover (1), and the dummy connecting blocks (21) are dummy connected to the protective cover (1).

3. The CCS protective cover of claim 2, wherein, The virtual connecting block (21) is truncated pyramidal in shape.

4. The CCS protective cover according to claim 1, characterized in that, The elastic arm (3) also includes an extension plate (34) connected to the second side wall plate (33), and the extension plate (34) extends in a direction away from the first side wall plate (31) to extend out of the snap-fit ​​groove (301).

5. The CCS protective cover according to claim 1, characterized in that, The first card head (331) is provided with a first card insertion angle (3311), and the angle of the first card insertion angle (3311) is 30° to 60°.

6. A CCS component, characterized in that, The device includes an output stage aluminum busbar (20), a CCS bracket (30), and a CCS protective cover as described in any one of claims 1 to 5. The output stage aluminum busbar (20) is supported on the CCS bracket (30), and the CCS protective cover is inserted and fixed on the CCS bracket (30). The CCS protective cover is used to protect the part where the output stage aluminum busbar (20) is electrically connected to the connecting copper busbar.

7. A battery pack, characterized in that, The battery pack includes a connecting copper busbar and multiple battery modules, the connecting copper busbar being configured to connect the multiple battery modules in series, the battery pack also including the CCS component of claim 6, the connecting copper busbar being electrically connected to the output stage aluminum busbar (20).

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