CCS assembly and battery module
By designing the adjustment groove and limit structure of the bracket in the CCS component, the problems of low position adjustment efficiency of aluminum rows and foreign matter bonding are solved, efficient welding and stable connection are achieved, and production efficiency and component performance are improved.
Patent Information
- Application Number
- CN202421975826.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-14
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-08-14
AI Technical Summary
In the prior art, the aluminum row of the CCS component needs to be repeatedly adjusted when welding the battery cell, resulting in low production efficiency and easy adhesion to foreign matters, affecting the performance of the component.
The bracket design is adopted, and the bracket is equipped with an adjustment groove and a limiting structure. The conductive row and the side wall clearance of the adjustment groove are matched. The limiting structure prevents the conductive row from being disengaged, thereby realizing position adjustment and avoiding colloidal bonding.
Improves production efficiency, avoids foreign matter bonding, and ensures the performance stability and reliability of CCS components.
Smart Images
Figure CN223052330U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of batteries, in particular to a CCS component and a battery module. Background Art
[0002] As a representative of green transportation, electric vehicles have the advantages of energy conservation, environmental protection, and cleanliness compared with traditional fuel vehicles, reducing the environmental and economic costs of vehicle use. As the core energy storage component of electric vehicles, power batteries directly affect the endurance experience of electric vehicles.
[0003] In the prior art, the number of battery cells carried by a battery pack directly affects the endurance of an electric vehicle. A power battery consists of multiple battery modules, and each battery module is composed of multiple battery cells connected in series or parallel through a CCS (Cells Contact System) component to obtain the required power and output voltage.
[0004] The aluminum busbar of the CCS component is pasted on the PC (Polycarbonate) film of the battery cell through a colloid. Due to certain tolerances in the dimensions of the battery cells, when welding the aluminum busbar of the CCS component to the battery cell terminal, the position of the aluminum busbar needs to be adjusted. Therefore, the colloid needs to be repeatedly torn to achieve alignment. This operation easily causes the operator to reduce the production efficiency due to repeatedly pasting the aluminum busbar, and it is also easy to stick to foreign objects, affecting the performance of the CCS component. Summary of the Utility Model
[0005] The purpose of the utility model is to provide a CCS component and a battery module, which can improve production efficiency and avoid the influence of foreign objects on the performance of the CCS component.
[0006] To achieve the above object, the utility model adopts the following technical solutions:
[0007] A CCS component, comprising:
[0008] A bracket, the bracket is provided with an adjustment groove, and a limiting structure is arranged on the side wall of the adjustment groove;
[0009] A conductive busbar, the conductive busbar is arranged in the adjustment groove, along a first direction, the conductive busbar is in clearance fit with the side wall of the adjustment groove, and the limiting structure is configured to prevent the conductive busbar from disengaging from the adjustment groove.
[0010] As an alternative scheme of the above CCS component, along a second direction, the conductive busbar is in interference fit with the side wall of the adjustment groove, and the second direction is arranged at an angle to the first direction.
[0011] As an alternative to the above CCS component, the limiting structure includes limiting hooks disposed on opposite sides of the adjustment groove. The limiting hook includes a connecting portion and a clamping portion connected to each other. The connecting portion is fixedly connected to the bracket, and the clamping portion is spaced from the bottom surface of the adjustment groove. The conductive bar is located between the clamping portion and the bottom surface of the adjustment groove.
[0012] As an alternative to the above CCS component, the distance between the clamping portion and the bottom surface of the adjustment groove is greater than the thickness of the conductive bar.
[0013] As an alternative to the above CCS component, the side wall of the adjustment groove further includes a guiding structure. The guiding structure includes guiding protrusions disposed on opposite sides of the adjustment groove. The guiding protrusion includes a guiding inclined surface. The distance between the guiding inclined surfaces of the two guiding protrusions on opposite sides of the adjustment groove gradually decreases along the direction of entering the adjustment groove.
[0014] As an alternative to the above CCS component, the guiding protrusion further includes a positioning surface. The positioning surface is connected to the guiding inclined surface and is located on the side of the guiding inclined surface close to the bottom surface of the adjustment groove. The positioning surface is perpendicular to the bottom surface of the adjustment groove.
[0015] As an alternative to the above CCS component, the CCS component further includes a signal line. The bracket is provided with a wire groove. The bracket is provided with a plurality of the adjustment grooves at intervals along the extending direction of the wire groove. Each adjustment groove is provided with the conductive bar. The wire groove communicates with each adjustment groove. The signal line is disposed in the wire groove. The signal line is communicatively connected to each conductive bar.
[0016] As an alternative to the above CCS component, a limiting buckle protrudes from the side wall of the wire groove. The signal line is located between the limiting buckle and the bottom surface of the wire groove.
[0017] As an alternative to the above CCS component, the bracket includes a first vertical wall and a second vertical wall. A wire groove is formed between the first vertical wall and the second vertical wall. The first vertical wall is provided with a plurality of the limiting buckles at intervals along the extending direction of the wire groove. The second vertical wall is provided with avoidance notches at positions corresponding to the plurality of limiting buckles.
[0018] A battery module, the battery module includes a plurality of battery cells and the CCS component as described above. The plurality of battery cells are connected in series or in parallel through the CCS component.
[0019] Advantages of the present utility model:
[0020] The present utility model provides a CCS component and a battery module. In this CCS component, the bracket is used to fix the busbar. Since the busbar is in clearance fit with the side wall of the adjustment groove along the first direction, the operator can adjust the position of the busbar in the adjustment groove in the first direction, so that the position of the busbar matches that of the pole column of the battery cell to be welded, improving the production efficiency and eliminating the need for bonding with colloid, thus avoiding the adhesion of foreign objects and affecting the performance of the CCS component. Description of the Drawings
[0021] Figure 1 is a schematic structural diagram of the CCS component provided by the present utility model;
[0022] Figure 2 is Figure 1 a partial enlarged view of part A in
[0023] Figure 3 is Figure 1 a partial enlarged view of part B in
[0024] In the figure:
[0025] 1, bracket; 2, busbar; 3, signal wire; 4, limit hook; 5, guiding convex block; 6, limit buckle;
[0026] 11, adjustment groove; 12, wire groove; 13, first vertical wall; 14, second vertical wall; 2a, series busbar; 2b, output busbar; 31, wire main body; 32, detection branch wire; 41, connecting part; 42, clamping part; 51, guiding inclined surface; 52, positioning surface;
[0027] 141, avoidance notch. Detailed Embodiment
[0028] The following details the embodiments of the present utility model. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model and should not be construed as limiting the present utility model.
[0029] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.
[0030] Unless otherwise clearly defined and limited, the terms "installed", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0031] Unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact through other features between them. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.
[0032] The technical solution of the present utility model will be further described below with reference to the drawings and through specific embodiments.
[0033] In the prior art, the number of battery cells carried by a battery pack directly affects the cruising range of an electric vehicle. The power battery is composed of multiple battery modules, and each battery module is composed of multiple battery cells connected in series or in parallel through a CCS (Cells Contact System) component to obtain the required power and output voltage.
[0034] This embodiment provides a battery module, which includes multiple battery cells and a CCS component, and the multiple battery cells are connected in series or in parallel through the CCS component. As Figure 1As shown, the CCS component includes a busbar 2 and a signal wire 3. The busbar 2 is used to connect the electrode posts of the battery cells, so as to connect multiple battery cells in parallel or in series. The signal wire 3 is used to connect the busbar 2, so as to collect data of the busbar 2, such as voltage, etc., for monitoring the conditions of multiple battery cells.
[0035] Since the output voltage can be increased when the battery cells are connected in series, in order to make the output voltage of the battery module meet the requirements of the driving voltage of the electric vehicle, in this embodiment, multiple battery cells in the battery module are connected in series in sequence. Specifically, the battery cells are square battery cells, and multiple battery cells are arranged in sequence along the first direction (the X direction in the figure). The positive electrode post and the negative electrode post of each battery cell are located on the top surface of the square battery cell and are spaced along the second direction (the Y direction in the figure), and the positive electrode posts and the negative electrode posts of two adjacent battery cells are staggered. The first direction and the second direction are arranged at an angle. Since the battery cells are square battery cells, the first direction and the second direction are perpendicular to each other.
[0036] As Figure 1 shown, the busbar 2 includes two types, one is a series busbar 2a and the other is an output busbar 2b. The series busbar 2a is used to connect the positive electrode post of one battery cell and the negative electrode post of another battery cell. Since the electrode posts with opposite polarities of adjacent battery cells are close to each other, multiple battery cells can be connected in series in sequence through multiple series busbars 2a. One end of the output busbar 2b is used to connect the positive electrode post or the negative electrode post of the battery cell located at the end after being connected in series, and the other end is used to connect the external circuit. Therefore, there are two output busbars 2b, one is the output positive electrode and the other is the output negative electrode, and the series busbar 2a is set according to the number of battery cells.
[0037] It can be understood that the aluminum busbar of the CCS component is pasted on the PC (Polycarbonate) film of the battery cell through a colloid. Since there are certain tolerances in the dimensions of the battery cells, when the busbar 2 of the CCS component is welded to the electrode post of the battery cell, it is necessary to adjust the position of the busbar 2 along the first direction. Therefore, it is necessary to repeatedly tear the colloid to achieve alignment. This operation easily causes the operator to repeatedly paste the busbar 2, reducing the production efficiency and easily sticking to foreign objects, affecting the performance of the CCS component.
[0038] To solve the above problems, this embodiment provides a CCS component, as Figures 1 to 3 shown, the CCS component includes a bracket 1 and a busbar 2. The bracket 1 is provided with an adjustment groove 11, and a limiting structure is arranged on the side wall of the adjustment groove 11. The busbar 2 is arranged in the adjustment groove 11. Along the first direction, the busbar 2 has a clearance fit with the side wall of the adjustment groove 11, and the limiting structure is configured to prevent the busbar 2 from slipping out of the adjustment groove 11.
[0039] In this CCS component, the bracket 1 is used to fix the bus bar 2. Since the bus bar 2 has a clearance fit with the side wall of the adjustment groove 11 in the first direction, the operator can adjust the position of the bus bar 2 in the adjustment groove 11 in the first direction, so that the position of the bus bar 2 matches the pole of the battery cell to be welded, improving the production efficiency. Moreover, it is not necessary to use glue for bonding, avoiding the adhesion of foreign objects and affecting the performance of the CCS component.
[0040] For the convenience of description, in this embodiment, the bracket 1 is placed horizontally, and the adjustment groove 11 is provided on the upper surface of the bracket 1 as an example for illustration. Usually, the bus bar 2 is a copper bar or an aluminum bar. In this embodiment, the bus bar 2 is taken as an aluminum bar for illustration.
[0041] As Figures 1 to 3 shown, a plurality of adjustment grooves 11 provided in the bracket 1 in the first direction are called a set of adjustment groove groups. In the second direction, the bracket 1 is provided with two sets of adjustment groove groups in total, and the plurality of adjustment grooves 11 between the two sets of adjustment groove groups are staggered from each other. A bus bar 2 is provided in each adjustment groove 11. This structure enables the bus bars 2 in the two sets of adjustment groove groups to connect all the battery cells in series. Among the plurality of bus bars 2, there are two output bus bars 2b, and the rest are series bus bars 2a. The two output bus bars 2b are respectively located at both ends of the bracket 1 in the first direction for output.
[0042] As Figure 2 shown, the limiting structure includes limiting hooks 4 provided on opposite sides of the adjustment groove 11. The limiting hook 4 includes a connecting portion 41 and a clamping portion 42 connected to each other. The connecting portion 41 is fixedly connected to the bracket 1, and the clamping portion 42 is spaced from the bottom surface of the adjustment groove 11. The bus bar 2 is located between the clamping portion 42 and the bottom surface of the adjustment groove 11. The limiting hook 4 can block the bus bar 2, preventing the bus bar 2 from passing over the limiting hook 4 and disengaging from the adjustment groove 11, ensuring the stability of the bus bar 2.
[0043] During installation, the operator can place the bus bar 2 in the adjustment groove 11 and on the upper surface of the clamping portion 42, and press it to slightly deform the side wall of the adjustment groove 11, so that the bus bar 2 completely enters the adjustment groove 11 and is limited by the clamping portion 42. For the convenience of the operator's operation, the upper surface of the clamping portion 42 is inclined to form a guiding surface. When the operator presses the bus bar 2, the edge of the bus bar 2 will slide along the guiding surface, which is beneficial to the slight deformation of the side wall of the adjustment groove 11, saving effort and not causing damage to the clamping portion 42.
[0044] It should be noted that the clamping portion 42 can be directly protruded from the side wall of the adjustment groove 11. At this time, the side wall of the adjustment groove 11 is equivalent to the connecting portion 41; the clamping portion 42 can also be directly arranged on the bracket 1, a notch is opened on the side wall of the adjustment groove 11, and the clamping portion 42 extends into the adjustment groove 11 from the avoidance opening. The advantage of this structure is that the connecting portion 41 has a low strength and is easy to deform, which is convenient for the operator to install or remove the conductive bar 2.
[0045] In this embodiment, the distance between the clamping portion 42 and the bottom surface of the adjustment groove 11 is greater than the thickness of the conductive bar 2. This structure enables the conductive bar 2 to move within the adjustment groove 11, facilitating the operator to adjust the position of the conductive bar 2.
[0046] In some embodiments, the operator can also first insert one end of the conductive bar 2 between the clamping portion 42 and the bottom surface of the adjustment groove 11, and slide the conductive bar 2 into the adjustment groove 11 by moving the conductive bar 2 horizontally. As Figure 2 and Figure 3 shown, in order to prevent the side wall of the adjustment groove 11 from scratching the conductive bar 2, the side wall of the adjustment groove 11 further includes a guiding structure. The guiding structure includes guiding protrusions 5 arranged on opposite sides of the adjustment groove 11. The guiding protrusions 5 include guiding inclined surfaces 51, and the distance between the guiding inclined surfaces 51 of the two guiding protrusions 5 on opposite sides of the adjustment groove 11 gradually decreases along the direction of entering the adjustment groove 11.
[0047] During the process of the conductive bar 2 sliding into the adjustment groove 11, the conductive bar 2 is in sliding contact with the guiding inclined surface 51. The guiding inclined surface 51 provides support for the conductive bar 2, and the guiding inclined surface 51 is in surface contact with the conductive bar 2, which can avoid scratching the conductive bar 2.
[0048] Furthermore, the guiding protrusion 5 further includes a positioning surface 52. The positioning surface 52 is connected to the guiding inclined surface 51 and is located on the side of the guiding inclined surface 51 close to the bottom surface of the adjustment groove 11. The positioning surface 52 is perpendicular to the bottom surface of the adjustment groove 11. When the conductive bar 2 moves within the adjustment groove 11, the positioning surface 52 can prevent the conductive bar 2 from sliding out of the adjustment groove 11 along the guiding inclined surface 51, ensuring the stability of the conductive bar 2 within the adjustment groove 11.
[0049] It can be understood that when welding the conductive bar 2 and the pole column of the battery cell, it is necessary to ensure the stability of the conductive bar 2 to avoid the movement of the conductive bar 2 affecting the welding effect. To achieve the above purpose, along the second direction, the conductive bar 2 is in interference fit with the side wall of the adjustment groove 11. The conductive bar 2 is squeezed by the two side walls of the adjustment groove 11 along the second direction, which not only plays a role in fixing the conductive bar 2, but also simplifies the structure, saves a separate fixing structure, reduces the cost, and also reduces the weight.
[0050] It should be noted that, in this embodiment, the guiding bumps 5 are arranged on two side walls of the adjusting groove 11 at intervals along the first direction, and the limiting hooks 4 are arranged on two side walls of the adjusting groove 11 at intervals along the second direction.
[0051] In this embodiment, the bracket 1 also needs to fix the signal line 3. As Figure 2 and Figure 3 shown, the bracket 1 is provided with a wire groove 12. The bracket 1 is provided with a plurality of adjusting grooves 11 at intervals along the extending direction of the wire groove 12. Each adjusting groove 11 is provided with a conductive row 2. The wire groove 12 is communicated with each adjusting groove 11. The signal line 3 is arranged in the wire groove 12, and the signal line 3 is in communication connection with each conductive row 2.
[0052] Among them, the wire groove 12 extends along the first direction, so that the wire groove 12 can be arranged beside a plurality of adjusting grooves 11 in a group of adjusting groove groups. The signal line 3 is arranged in the wire groove 12, and the signal line 3 can be connected to the conductive row 2 through the connection position of the wire groove 12 and each adjusting groove 11, so as to detect the condition of each battery cell, ensure that any abnormality of the battery cell can be detected in time, and avoid potential safety hazards.
[0053] Specifically, the signal line 3 can detect the voltage of each battery cell and can also sense the temperature of each conductive row 2 to comprehensively analyze the condition of each battery cell.
[0054] As Figure 3 shown, in order to prevent the signal line 3 from slipping out of the wire groove 12, a limiting buckle 6 protrudes from the side wall of the wire groove 12, and the signal line 3 is located between the limiting buckle 6 and the bottom surface of the wire groove 12. The limiting buckle 6 can fix the signal line 3 in the wire groove 12 and ensure the stability of the signal line 3.
[0055] In this embodiment, the bracket 1 includes a first vertical wall 13 and a second vertical wall 14. A wire groove 12 is formed between the first vertical wall 13 and the second vertical wall 14. The first vertical wall 13 is provided with a plurality of limiting buckles 6 at intervals along the extending direction of the wire groove 12. The second vertical wall 14 is provided with avoidance notches 141 corresponding to the positions of the plurality of limiting buckles 6. When an operator needs to install the signal line 3 in the wire groove 12, when encountering the position of the limiting buckle 6, the operator can bend the signal line 3 to make the signal line 3 enter between the limiting buckle 6 and the bottom surface of the wire groove 12 through the avoidance notch 141, which is convenient for installation.
[0056] In this embodiment, since there are two groups of adjusting groove groups in total, two wire grooves 12 need to be provided. Correspondingly, there are also two signal lines 3. Among them, the signal line 3 includes a line body 31 and a plurality of detection branch lines 32. The line body 31 is located in the wire groove 12, and the detection branch lines 32 enter the corresponding adjusting grooves 11 through the connection positions of the wire groove 12 and the adjusting grooves 11 and are connected to the conductive rows 2 in the adjusting grooves 11.
[0057] The above content is only a preferred embodiment of the present utility model. For those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. The content of this specification should not be construed as a limitation to the present utility model.
Claims
1. A CCS component, characterized in that: include: A bracket (1), wherein the bracket (1) is provided with an adjustment slot (11), and a side wall of the adjustment slot (11) is provided with a limiting structure; A conductive bar (2), the conductive bar (2) being arranged in the adjustment slot (11), the conductive bar (2) being gap-matched with a side wall of the adjustment slot (11) along a first direction, and the limiting structure being configured to prevent the conductive bar (2) from escaping from the adjustment slot (11).
2. The CCS assembly according to claim 1, characterized in that: Along a second direction, the conductive row (2) is interference-fitted with a side wall of the adjustment slot (11), and the second direction is arranged at an angle to the first direction.
3. The CCS assembly according to claim 1, characterized in that: The limiting structure comprises limiting hooks (4) arranged on opposite sides of the adjusting slot (11), the limiting hooks (4) comprising a connecting portion (41) and a clamping portion (42) connected to each other, the connecting portion (41) being fixedly connected to the bracket (1), the clamping portion (42) being spaced apart from the bottom surface of the adjusting slot (11), and the conductive bar (2) being located between the clamping portion (42) and the bottom surface of the adjusting slot (11).
4. The CCS assembly according to claim 3, characterized in that: The distance between the clamping portion (42) and the bottom surface of the adjustment slot (11) is greater than the thickness of the conductive bar (2).
5. The CCS assembly according to claim 1, characterized in that: The side wall of the adjustment groove (11) further comprises a guide structure, the guide structure comprising guide protrusions (5) arranged on opposite sides of the adjustment groove (11), the guide protrusions (5) comprising guide inclined surfaces (51), and the distance between the guide inclined surfaces (51) of the two guide protrusions (5) on opposite sides of the adjustment groove (11) gradually decreases along a direction entering the adjustment groove (11).
6. The CCS assembly according to claim 5, characterized in that: The guide protrusion (5) further comprises a positioning surface (52), wherein the positioning surface (52) is connected to the guide inclined surface (51) and is located on a side of the guide inclined surface (51) close to the bottom surface of the adjustment groove (11), and the positioning surface (52) is perpendicular to the bottom surface of the adjustment groove (11).
7. The CCS assembly according to any one of claims 1 to 6, characterized in that: The CCS assembly further comprises a signal line (3); the support (1) is provided with a wire groove (12); the support (1) is provided with a plurality of adjustment grooves (11) at intervals along the extension direction of the wire groove (12); each adjustment groove (11) is provided with a conductive bar (2); the wire groove (12) is communicated with each adjustment groove (11); the signal line (3) is provided in the wire groove (12); and the signal line (3) is communicatively connected with each conductive bar (2).
8. The CCS assembly according to claim 7, characterized in that: A limiting buckle (6) is protrudingly provided on the side wall of the wire trough (12), and the signal line (3) is located between the limiting buckle (6) and the bottom surface of the wire trough (12).
9. The CCS assembly according to claim 8, characterized in that: The bracket (1) comprises a first vertical wall (13) and a second vertical wall (14); the wire groove (12) is formed between the first vertical wall (13) and the second vertical wall (14); a plurality of the limiting buckles (6) are arranged at intervals on the first vertical wall (13) along the extension direction of the wire groove (12); and the second vertical wall (14) is provided with avoidance notches corresponding to the positions of the plurality of the limiting buckles (6).
10. A battery module, characterized in that: The battery module comprises a plurality of battery cells and a CCS assembly as claimed in any one of claims 1 to 9, wherein the plurality of battery cells are connected in series or in parallel via the CCS assembly.