A CCS assembly, a battery module structure and a battery
Patent Information
- Application Number
- CN202210691692.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-06-17
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2042-06-17
AI Technical Summary
现有技术中,支撑板和电芯之间的定位效果差,电芯和支撑板之间容易错位,导致汇流排和电芯之间的连接稳定性差,进而容易造成电芯短路等风险,存在较大的安全隐患
[0030]本发明提供的CCS组件,通过在固定架与电芯接触的一侧设置多个定位凸起,将定位凸起插入相邻电芯之间的间隙中,实现固定架和电芯的装配。定位凸起的形状根据相邻电芯之间的间隙设置,使定位凸起能够和电芯的侧面相接触,起到限定电芯位置的作用,防止电芯接触造成短路。在电芯的顶部设置汇流排以将多个电芯进行电连接。固定架上设置安装汇流排的安装孔,汇流排能够嵌入安装孔中并和电芯进行接触连接,有效防止汇流排错位导致的电芯短路问题的发生。本实施例提供的固定架结构简单,能够实现电芯的限位,同时,能够增加汇流排和电芯之间的连接稳定性,保证了电池整体结构的稳定性和安全性。
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Figure CN114976503B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of battery technology, and in particular to a CCS component, a battery module structure, and a battery. Background Technology
[0002] A battery module, also known as a battery unit, is the energy storage unit of a power battery pack. By modularizing multiple battery cells, subsequent installation and use can be facilitated. Battery modules have the advantages of high power and stable voltage output, and are therefore widely used in various industries.
[0003] The battery module includes a CCS (Battery Module Data Acquisition System) component. The CCS component has a complex structure, mainly consisting of a support plate and a busbar. In existing technologies, the positioning effect between the support plate and the battery cell is poor, and the battery cell and the support plate are prone to misalignment. This results in poor connection stability between the busbar and the battery cell, which can easily lead to risks such as short circuits in the battery cell, posing a significant safety hazard.
[0004] Therefore, there is an urgent need to propose a CCS component, battery module structure, and battery to solve the above problems. Summary of the Invention
[0005] One object of the present invention is to provide a CCS component that can limit the position of the battery cell to prevent short circuits caused by battery cell contact. At the same time, it can increase the stability of the connection between the bus and the battery cell to prevent short circuits caused by bus misalignment.
[0006] To achieve this objective, the present invention adopts the following technical solution:
[0007] A CCS assembly is disposed on top of a plurality of battery cells, with gaps formed between adjacent battery cells. The CCS assembly includes:
[0008] A fixing frame is provided on the top of the battery cell. The fixing frame is provided with a plurality of positioning protrusions, which extend into the gap between adjacent battery cells and contact the side of the battery cell. The fixing frame is also provided with mounting holes.
[0009] A busbar is embedded in the mounting hole, and the busbar is configured to contact the battery cells and electrically connect multiple battery cells.
[0010] Optionally, the busbar is provided with a positioning hole, and the fixing frame is provided with a positioning post, the positioning post passing through the positioning hole.
[0011] Optionally, the CCS assembly further includes thermally conductive adhesive disposed on the end faces of the mounting bracket and the busbar, which can bond the mounting bracket and the busbar together.
[0012] Optionally, the mounting bracket is provided with a mounting groove, the busbar is disposed in the mounting groove, the mounting hole is disposed on the bottom surface of the mounting groove, and the side of the busbar, the bottom surface of the mounting groove and the side wall of the mounting groove form a glue storage tank, which can accommodate the thermally conductive adhesive.
[0013] Optionally, the mounting bracket is provided with an adhesive passage hole, which is located at the top of the battery cell, and the thermally conductive adhesive can fill the adhesive passage hole and contact the top of the battery cell.
[0014] Optionally, the busbar includes a positive terminal connection portion and a negative terminal connection portion, the mounting hole includes a positive terminal mounting hole and a negative terminal mounting hole, the positive terminal connection portion is electrically connected to the positive terminal of the battery cell through the positive terminal mounting hole, and the negative terminal connection portion is electrically connected to the negative terminal of the battery cell through the negative terminal mounting hole.
[0015] Another objective of this invention is to provide a battery module structure that is easy to assemble, readily automated, robust in structure, and highly safe.
[0016] To achieve this objective, the present invention adopts the following technical solution:
[0017] A battery module structure includes the aforementioned CCS component, and further includes a bracket and multiple battery cells. The bottom surface of the bracket has multiple placement portions, and a positioning portion is provided along the outer periphery of the placement portions. The placement portions and the positioning portions form a receiving groove. The bottom of the battery cell is placed in the receiving groove, and the battery cell is fixedly connected to the bracket by structural adhesive.
[0018] Optionally, the positioning part includes a plurality of positioning blocks, which are spaced apart.
[0019] Optionally, the positioning block is disposed at the connection between adjacent placement portions.
[0020] Optionally, the side of the positioning block is provided with a groove.
[0021] Optionally, the thickness of the top of the positioning block is less than the thickness of the bottom.
[0022] Optionally, the battery module structure further includes a tray, the bracket is disposed on the tray, the tray is provided with a plurality of pressure relief holes, the placement part is provided with a through hole, and the pressure relief holes communicate with the through hole.
[0023] Optionally, the bracket is provided with an overflow hole, and there is an injection space between the bracket and the tray, so that the structural adhesive can flow into the injection space through the gap between adjacent cells and the overflow hole.
[0024] Optionally, the edge of the through hole is provided with annular ribs, which form a communication channel between the pressure relief hole and the through hole, and the annular ribs are in contact with the tray.
[0025] Optionally, the placement part is provided with a protruding ridge, which is oriented toward the tray, and the protruding ridge is used to increase the contact area between the structural adhesive and the bracket.
[0026] Another object of the present invention is to provide a battery with a compact overall structure, high connection strength, and good safety performance.
[0027] To achieve this objective, the present invention adopts the following technical solution:
[0028] A battery includes a housing and the aforementioned battery module structure, wherein the battery module structure is disposed inside the housing.
[0029] Beneficial effects:
[0030] The CCS assembly provided by this invention assembles the frame and battery cells by providing multiple positioning protrusions on the side of the mounting bracket that contacts the battery cells. These protrusions are inserted into the gaps between adjacent battery cells. The shape of the positioning protrusions is designed according to the gaps between adjacent battery cells, allowing them to contact the sides of the battery cells and thus defining their positions and preventing short circuits caused by contact. A busbar is provided on the top of each battery cell to electrically connect multiple cells. The mounting bracket has mounting holes for the busbar, which can be embedded in the holes and make contact with the battery cells, effectively preventing short circuits caused by busbar misalignment. The mounting bracket structure provided in this embodiment is simple, effectively limiting the positioning of the battery cells, and increasing the connection stability between the busbar and the battery cells, ensuring the stability and safety of the overall battery structure.
[0031] The battery module structure provided by this invention places the aforementioned bracket at the bottom of the battery cell, providing both support and positioning for the cell. The bracket includes multiple placement portions, with positioning portions forming receiving grooves on their outer periphery. Each receiving groove corresponds to one battery cell, allowing multiple cells to be installed simultaneously during assembly, significantly improving assembly efficiency, ensuring assembly accuracy, and facilitating automation. Structural adhesive is used to securely connect the bracket and the battery cell, ensuring a convenient and reliable connection and effectively preventing the cell from loosening or falling off.
[0032] The battery provided by this invention includes the aforementioned battery module structure and housing. The top of the battery cell is secured by a fixing frame, and the bottom is secured by a bracket, thereby firmly confining the cell between the fixing frame and the bracket to prevent short circuits. Simultaneously, structural adhesive is used to fix and insulate the cell, bracket, and tray at the bottom, resulting in a compact overall structure with high strength and good safety performance. Attached Figure Description
[0033] Figure 1 This is an exploded view of the battery module structure provided by the present invention;
[0034] Figure 2 This is a partial bottom structural diagram of the fixing frame provided by the present invention;
[0035] Figure 3 This is a partial structural schematic diagram of the CCS component provided by the present invention;
[0036] Figure 4 This is a partial structural diagram of the bracket provided by the present invention. Figure 1 ;
[0037] Figure 5 This is a partial structural diagram of the bracket provided by the present invention. Figure 2 ;
[0038] Figure 6 This is an exploded view of a partial structure of the battery module provided by the present invention;
[0039] Figure 7 This is an assembly diagram of the battery module structure provided by the present invention.
[0040] In the picture:
[0041] 1000, Battery cell; 100, Mounting bracket; 110, Positioning protrusion; 120, Mounting hole; 121, Positive electrode mounting hole; 122, Negative electrode mounting hole; 130, Adhesive passage hole; 140, Positioning post; 150, Adhesive storage tank; 200, Busbar; 210, Positive electrode connection part; 220, Negative electrode connection part; 230, Substrate; 300, Thermally conductive adhesive; 400, Bracket; 410, Placement part; 411, Ring rib; 412, Raised ridge; 420, Positioning block; 430, Adhesive overflow hole; 440, Through hole; 500, Tray; 510, Pressure relief hole; 600, Structural adhesive. Detailed Implementation
[0042] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0043] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, 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 invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Furthermore, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0044] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0045] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0046] See Figure 1 and Figure 2 This embodiment provides a CCS assembly, which is disposed on top of multiple battery cells 1000, with gaps formed between adjacent battery cells 1000. The CCS assembly includes a mounting bracket 100 and a busbar 200. The mounting bracket 100 is disposed on top of the battery cells 1000 and has multiple positioning protrusions 110. The positioning protrusions 110 can extend into the gaps between adjacent battery cells 1000 and contact the sides of the battery cells 1000. The mounting bracket 100 also has mounting holes 120. The busbar 200 is embedded in the mounting holes 120 and contacts the battery cells 1000, electrically connecting the multiple battery cells 1000.
[0047] The aforementioned CCS assembly, by providing multiple positioning protrusions 110 on one side of the mounting bracket 100, allows the positioning protrusions 110 to be inserted into the gaps between adjacent battery cells 1000 during assembly of the mounting bracket 100 and the battery cells 1000. The shape of the positioning protrusions 110 is set according to the gaps between adjacent battery cells 1000, allowing the positioning protrusions 110 to contact the sides of the battery cells 1000, thus defining the position of the battery cells 1000 and preventing short circuits caused by contact. To enable electrical connection between multiple battery cells 1000, a busbar 200 is provided on the top of the battery cells, and mounting holes 120 for mounting the busbar 200 are provided on the mounting bracket 100. The busbar 200 is embedded in the mounting holes 120 and makes contact with the battery cells 1000, effectively preventing short circuits caused by misalignment of the busbar 200. The mounting bracket 100 provided in this embodiment has a simple structure, which can limit the position of the battery cell 1000. At the same time, it is beneficial to the connection stability between the busbar 200 and the battery cell 1000, thus ensuring the stability and safety of the overall battery structure.
[0048] See Figures 1 to 3 The mounting bracket 100 provided in this embodiment can be made of plastic or other insulating materials to avoid the risk of short circuits between the battery cells 1000. The mounting bracket 100 is generally rectangular, including an end face and a side plate connected to the end face. When assembling the mounting bracket 100 and the battery cells 1000, the mounting bracket 100 is fastened to the top of the battery cells 1000, and the positioning protrusion 110 is inserted into the gap between adjacent battery cells 1000. The side plate can limit the battery cells 1000 located on the outer side, making the overall structure compact and reliable. The arrangement of the battery cells 1000 used in this embodiment forms a gap between three adjacent battery cells 1000. This gap is approximately triangular in shape. Therefore, the cross-section of the positioning protrusion 110 on the mounting bracket 100 is approximately triangular, and the three sides of the triangle have a certain curvature. The size of this curvature is set according to the outer diameter of the battery.
[0049] Further, see Figure 2The busbar 200 includes a positive electrode connection portion 210 and a negative electrode connection portion 220. The mounting hole 120 includes a positive electrode mounting hole 121 and a negative electrode mounting hole 122. The positive electrode connection portion 210 is electrically connected to the positive electrode of the battery cell 1000 through the positive electrode mounting hole 121, and the negative electrode connection portion 220 is electrically connected to the negative electrode of the battery cell 1000 through the negative electrode mounting hole 122. Specifically, the busbar 200 includes multiple busbar units, each busbar unit including a positive electrode connection portion 210 and a negative electrode connection portion 220. The busbar units are connected to each other through a substrate 230. Setting the positive mounting hole 121 and the negative mounting hole 122 separately, compared to connecting the positive mounting hole 121 and the negative mounting hole 122 into one piece, can improve the reliability of the connection of the battery cell 1000, effectively avoid the short circuit of the battery cell 1000 caused by the misalignment of the busbar 200 or poor contact with the battery cell 1000, and at the same time, can increase the structural strength of the fixing frame 100.
[0050] See Figure 3 The busbar 200 is provided with positioning holes, and the mounting bracket 100 is provided with positioning posts 140. The positioning posts 140 pass through the positioning holes, thereby positioning the busbar 200 and preventing misalignment between the busbar 200 and the battery cell 1000. In this embodiment, each busbar unit is provided with a positioning hole, which is located between the positive electrode connection portion 210 and the negative electrode connection portion 220, and the positioning post 140 is located between the positive electrode mounting hole 121 and the negative electrode mounting hole 122. It is understood that the position and shape of the positioning hole and the positioning post 140 should be matched. In other embodiments, the positioning post 140 may also be provided on the substrate 230 or the positive electrode connection portion 210 or the negative electrode connection portion 220.
[0051] Furthermore, the CCS module also includes thermally conductive adhesive 300, which is applied to the end faces of the mounting bracket 100 and the busbar 200, bonding them together. During charging and discharging, the busbar 200 experiences significant localized heat generation. The thermally conductive adhesive 300 transfers this heat to cooler areas, preventing excessively high internal temperatures and potential safety hazards such as thermal runaway of the cell 1000. Additionally, the thermally conductive adhesive 300 bonds the busbar 200 to the support bracket 400, increasing structural rigidity and stability.
[0052] See also Figure 3The mounting bracket 100 has a mounting groove, and the busbar 200 is disposed within the mounting groove. Mounting holes 120 are located on the bottom surface of the mounting groove. The side of the busbar 200, the bottom surface of the mounting groove, and the side wall of the mounting groove form a reservoir 150, which can hold thermally conductive adhesive 300. Understandably, the cross-sectional area of the mounting groove is larger than that of the busbar 200. Therefore, after the busbar 200 is placed in the mounting bracket 100, a gap exists around the busbar 200; this gap is the reservoir 150. This structural design allows for the holding of more thermally conductive adhesive 300, enhancing heat transfer and the stability of the connection between components. Optionally, the height of the mounting groove is greater than the thickness of the busbar 200, so the thermally conductive adhesive 300 can fill the surface of the busbar 200, covering the busbar 200 beneath the thermally conductive adhesive 300. This also improves heat transfer and increases the strength of the connection between components.
[0053] Furthermore, the mounting bracket 100 is provided with an adhesive-filling hole 130, located at the top of the battery cell 1000. The thermally conductive adhesive 300 can fill the adhesive-filling hole 130 and contact the top of the battery cell 1000. The adhesive-filling hole 130 allows the thermally conductive adhesive 300 to directly contact a portion of the surface at the top of the battery cell 1000, enabling direct heat transfer from the battery cell 1000 and rapidly reducing its heat, thereby ensuring the safety of the battery cell 1000. In this embodiment, the shape of the adhesive-filling hole 130 can be determined according to the shape of the busbar 200, and its area should be sufficiently large while ensuring that the bracket 400 has sufficient structural strength. In other embodiments, the adhesive-filling hole 130 can also be a round hole, a square hole, or an oblong hole, etc.
[0054] See Figure 4This embodiment also provides a battery module structure, which includes the aforementioned CCS component and a bracket 400. The bottom surface of the bracket 400 has multiple placement portions 410, and positioning portions are provided along the outer periphery of the placement portions 410. The placement portions 410 and the positioning portions form a receiving groove. The bottom of the battery cell 1000 is placed in the receiving groove, and the battery cell 1000 is fixedly connected to the bracket 400 by structural adhesive 600. The outer contour of the placement portion 410 is designed to be circular according to the shape of the bottom of the battery cell 1000, and the joints of the placement portions 410 are tangent and interconnected. The bracket 400 is placed on the bottom of the battery cell 1000 and can provide both support and positioning for the battery cell 1000. By providing a positioning part on the outer periphery of the placement part 410, the placement part 410 and the positioning part form a receiving groove, in which the battery cell 1000 is placed. Each receiving groove corresponds to one battery cell 1000. During assembly, multiple battery cells 1000 can be installed simultaneously, greatly improving assembly efficiency, ensuring assembly accuracy, and facilitating automation. Structural adhesive 600 is used to fix the bracket 400 and the battery cell 1000 together, ensuring a convenient and reliable connection and effectively preventing the battery cell 1000 from loosening or falling off.
[0055] Furthermore, the positioning part includes a plurality of positioning blocks 420, which are spaced apart. Both sides of each positioning block 420 are arc-shaped surfaces, each facing a different battery cell 1000. In other embodiments, the positioning part may also be a cylindrical structure disposed on the outer periphery of the placement part 410 and extending towards the top of the battery cell 1000, or a plurality of arc-shaped plate structures disposed along the outer periphery of the positioning part, etc. Any structural form capable of positioning the battery cell 1000 is within the scope of protection of this application.
[0056] Furthermore, positioning blocks 420 are disposed at the connection points of adjacent placement portions 410. In this embodiment, for each placement portion 410 in the middle of the bracket 400, six placement portions 410 are connected around it; therefore, six positioning blocks 420 are disposed on the outer periphery of the placement portion 410. In other embodiments, the number of positioning blocks 420 is not limited to six; it can be three, five, or other numbers. The position of the positioning blocks 420 is not limited to the connection points of adjacent placement portions 410; the specific form can be set according to the arrangement of the battery cells 1000.
[0057] Optionally, the thickness of the top of the positioning block 420 is less than the thickness of the bottom, and the width of the top is less than the width of the bottom. For battery module structures that require filling the bottom of the cell 1000 with structural adhesive 600, the positioning block 420 adopts this structure of being thinner at the top and thicker at the bottom, and narrower at the top and wider at the bottom. This increases the contact area between the structural adhesive 600 and the positioning block 420, as well as between the structural adhesive 600 and the cell 1000, making the bonding stronger. The cell 1000 and the bracket 400 are less likely to loosen, and the bracket 400 is easier to demold, reducing manufacturing difficulties. Optionally, grooves can be provided on the side of the positioning block 420. These grooves can accommodate the structural adhesive 600. In this embodiment, grooves are provided on both sides of the positioning block 420. The grooves are V-shaped grooves, which can increase the creepage distance, ensure electrical safety, and increase the adhesive area, thereby increasing the assembly strength. To further increase the adhesive area, in this embodiment, the circle formed by the bottom of the positioning block 420 is slightly larger than the diameter of the bottom of the battery cell 1000, with the diameter difference ranging from 0.1 to 0.4 mm. For example, it can be 0.1 mm, 0.2 mm, or 0.3 mm. In other embodiments, the bottom of the positioning part can also be in contact with the bottom of the battery cell 1000 to hold the battery cell 1000 into the positioning part.
[0058] See Figures 4 to 6 Furthermore, the battery module structure also includes a tray 500, a support 400 mounted on the tray 500, a plurality of pressure relief holes 510 on the tray 500, and a through hole 440 on the placement part 410, with the pressure relief holes 510 and the through hole 440 communicating with each other. The tray 500 serves to support the support 400. Simultaneously, the pressure relief holes 510 and the through hole 440 allow heat from the cell 1000 or gas generated during battery thermal runaway to be quickly discharged from the bottom of the cell 1000, enhancing heat dissipation and increasing the overall safety performance of the battery structure. In this embodiment, the tray 500 is made of metal, the support 400 is made of plastic or other highly insulating materials, and the placement part 410 prevents the bottom surface of the cell 1000 from contacting the tray 500, providing insulation and protection.
[0059] Furthermore, the bracket 400 is provided with an overflow hole 430, and there is an adhesive injection space between the bracket 400 and the tray 500. Structural adhesive 600 can flow into the adhesive injection space through the gaps between adjacent battery cells 1000 and the overflow hole 430. The structural adhesive 600 is used to bond the tray 500, the bracket 400, and the battery cells 1000. In this embodiment, the unconnected portion between three adjacent placement parts 410 forms an overflow hole 430. The shape of the overflow hole 430 is set according to the gaps between the battery cells 1000, and each placement part 410 has six overflow holes 430 around it. In other embodiments, the number and shape of the overflow holes 430 can be set according to the arrangement of the battery cells 1000, and are not specifically limited here. It is understood that the gaps between the battery cells 1000, the overflow holes 430, and the adhesive injection space between the bracket 400 and the tray 500 are interconnected. Structural adhesive 600 can fill the injection space to bond the tray 500 and the bracket 400. Simultaneously, structural adhesive 600 can fill the gaps between adjacent cells 1000 to bond multiple cells 1000. Additionally, it can fill around the positioning block 420 to bond the bracket 400 and the cells 1000. Besides its bonding function, structural adhesive 600 also provides insulation between adjacent cells 1000 and between cells 1000 and the tray 500.
[0060] See Figure 5 and Figure 6 A ring rib 411 is provided on the edge of the through hole 440, forming a connecting channel between the pressure relief hole 510 and the through hole 440. The ring rib 411 is in contact with the tray 500. The ring rib 411 provides support between the bracket 400 and the tray 500. The ring rib 411 is located in the inner ring of the placement part 410, so there is a certain interval between adjacent ring ribs 411, and the ring rib 411 has a certain height, thereby forming an injection space between the bracket 400 and the tray 500. The structural adhesive 600 can be filled into the injection space. At the same time, the pressure relief hole 510 and the through hole 440 are connected. When a certain cell 1000 thermally runs away, the high-temperature gas generated by the cell 1000 can quickly pass through the through hole 440 and overflow from the pressure relief hole 510 along the ring rib 411, effectively preventing the high-temperature gas from spreading to the bottom of other cells 1000 and reducing the risk of thermal runaway of other cells 1000.
[0061] Furthermore, the placement portion 410 is provided with a protruding ridge 412, which faces the tray 500. The protruding ridge 412 increases the contact area between the structural adhesive 600 and the support 400, thereby increasing the bonding strength. In this embodiment, the protruding ridge 412 is arranged around the outer periphery of the placement portion 410, and a groove is formed between the protruding ridge 412 and the ring rib 411, which can be filled with the structural adhesive 600. In other embodiments, the protruding ridge 412 may also be one or more columnar structures. Any structural form that can increase the bonding strength between the structural adhesive 600 and the tray 500 is within the protection scope of this application.
[0062] See Figure 7 This embodiment also provides a battery, which includes a housing and the aforementioned battery module structure, with the battery module structure disposed inside the housing. The top of the battery cell 1000 is limited by a fixing bracket 100, and the bottom is limited by a support bracket 400, thereby securely confining the battery cell 1000 between the fixing bracket 100 and the support bracket 400, preventing short circuits caused by contact. The through hole 440 on the support bracket 400 and the pressure relief hole 510 on the tray 500 effectively solve the problem of high-temperature gas propagation during thermal runaway of the battery cell 1000. Furthermore, the top of the battery cell 1000 is bonded to the support bracket 400 and the busbar 200 using thermally conductive adhesive 300, greatly preventing heat concentration at the top of the battery cell 1000 and aiding in heat dissipation. Simultaneously, the bottom of the battery cell 1000 is fixedly bonded to the support bracket 400 and the tray 500 using structural adhesive 600, resulting in a compact and high-strength overall structure.
[0063] 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 will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. 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 assembly, disposed on top of a plurality of battery cells (1000), wherein a gap is formed between three adjacent battery cells (1000), the gap being substantially triangular prism-shaped, characterized in that, The CCS component includes: A fixing frame (100) is disposed on the top of the battery cell (1000). A plurality of positioning protrusions (110) are provided on one side of the fixing frame (100). The shape of the positioning protrusions (110) is set according to the gap between adjacent battery cells (1000). The cross-section of the positioning protrusions (110) is basically triangular, so that the positioning protrusions (110) can extend into the gap between adjacent battery cells (1000) and contact the sides of the three adjacent battery cells (1000). The fixing frame (100) is also provided with mounting holes (120). Busbar (200) is embedded in the mounting hole (120), and the busbar (200) is in contact with the battery cell (1000) and electrically connects multiple battery cells (1000); The CCS assembly also includes thermally conductive adhesive (300), which is disposed on the end faces of the mounting bracket (100) and the busbar (200) and can bond the mounting bracket (100) and the busbar (200); The mounting bracket (100) is provided with a mounting groove, the busbar (200) is disposed in the mounting groove, the cross-sectional area of the mounting groove is larger than the cross-sectional area of the busbar (200), the mounting hole (120) is disposed on the bottom surface of the mounting groove, the side of the busbar (200) and the bottom surface and side wall of the mounting groove form a glue storage tank (150), the glue storage tank (150) can accommodate the thermally conductive adhesive (300).
2. The CCS component according to claim 1, characterized in that, The busbar (200) is provided with a positioning hole, and the fixing frame (100) is provided with a positioning post (140), which passes through the positioning hole.
3. The CCS component according to claim 1, characterized in that, The mounting bracket (100) is provided with an adhesive passage (130), the adhesive passage (130) is located at the top of the battery cell (1000), and the thermally conductive adhesive (300) can fill the adhesive passage (130) and contact the top of the battery cell (1000).
4. The CCS component according to any one of claims 1-2, characterized in that, The busbar (200) includes a positive electrode connection portion (210) and a negative electrode connection portion (220). The mounting hole (120) includes a positive electrode mounting hole (121) and a negative electrode mounting hole (122). The positive electrode connection portion (210) is electrically connected to the positive electrode of the battery cell (1000) through the positive electrode mounting hole (121), and the negative electrode connection portion (220) is electrically connected to the negative electrode of the battery cell (1000) through the negative electrode mounting hole (122).
5. A battery module structure, characterized in that, The CCS assembly as described in any one of claims 1-4 further includes a bracket (400) and a plurality of battery cells (1000). The bottom surface of the bracket (400) has a plurality of placement portions (410), and a positioning portion is provided along the outer periphery of the placement portion (410). The placement portion (410) and the positioning portion form a receiving groove. The bottom of the battery cell (1000) is placed in the receiving groove, and the battery cell (1000) is fixedly connected to the bracket (400) by structural adhesive (600).
6. The battery module structure according to claim 5, characterized in that, The positioning part includes a plurality of positioning blocks (420), which are spaced apart.
7. The battery module structure according to claim 6, characterized in that, The positioning block (420) is disposed at the connection between adjacent placement portions (410).
8. The battery module structure according to claim 6, characterized in that, The side of the positioning block (420) is provided with a groove.
9. The battery module structure according to any one of claims 6-8, characterized in that, The thickness of the top of the positioning block (420) is less than the thickness of the bottom.
10. The battery module structure according to claim 5, characterized in that, The battery module structure also includes a tray (500), the bracket (400) is disposed on the tray (500), the tray (500) is provided with a plurality of pressure relief holes (510), the placement part (410) is provided with a through hole (440), and the pressure relief hole (510) communicates with the through hole (440).
11. The battery module structure according to claim 10, characterized in that, The bracket (400) is provided with an overflow hole (430), and there is an injection space between the bracket (400) and the tray (500). The structural adhesive (600) can flow to the injection space through the gap between adjacent cells (1000) and the overflow hole (430).
12. The battery module structure according to claim 10 or 11, characterized in that, The edge of the through hole (440) is provided with a ring rib (411), which forms a communication channel between the pressure relief hole (510) and the through hole (440), and the ring rib (411) is in contact with the tray (500).
13. The battery module structure according to claim 12, characterized in that, The placement part (410) is provided with a protruding ridge (412), which faces the tray (500) and is used to increase the contact area between the structural adhesive (600) and the bracket (400).
14. A battery, characterized in that, It includes a housing and a battery module structure as described in any one of claims 5-13, wherein the battery module structure is disposed inside the housing.
Citation Information
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