Busbar support assembly and battery module

Abstract

The invention belongs to the technical field of batteries, and discloses a busbar support assembly and a battery module, the busbar support assembly comprises a plurality of busbar bodies and a busbar support, each busbar body is used for connecting two adjacent single batteries, each busbar body is provided with a connecting through hole and a buffer groove, and the connecting through hole is communicated with the buffer groove. The busbar support is provided with a plurality of mounting positions, each mounting position is provided with an avoiding groove, a connecting column and an avoiding through hole, the distance size between two adjacent single batteries is a, the thickness size of each single battery is t, the width size of each pole is b, the width size of each avoiding groove is W, and W is more than 0 and less than a + t-b. The busbar support and the busbar body can be assembled conveniently by arranging the avoiding groove for accommodating the buffering groove on the busbar support, interference between the busbar support and the pole is avoided by limiting the width size W of the avoiding groove, and the assembling reliability is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a busbar bracket assembly and a battery module. Background Art

[0002] Nowadays, power battery technologies are constantly innovating and developing. Battery assembly technology is one of the important directions. A battery module is an integrated body of battery cells, which are connected by a busbar bracket assembly.

[0003] The bus bracket assembly is generally formed by riveting, clamping, and gluing the bus and module sampling components on the bus bracket, and then the stacked battery cells are formed into a battery module by welding the bus and the poles, and then into a power battery to provide energy for the entire vehicle.

[0004] Among them, since the busbar will be pulled when it is welded to the poles on two different battery cells, thereby increasing the probability of fatigue damage to the busbar, grooves are currently set on the busbar as a buffer structure to reduce the probability of fatigue damage to the busbar. However, after the concave grooves are set on the busbar as a buffer structure, the busbar is no longer a planar structure, which makes it inconvenient to assemble the busbar and the busbar bracket, affecting the reliability of the assembly of the busbar and the busbar bracket. Summary of the Invention

[0005] The object of the present invention is to provide a busbar bracket assembly and a battery module that are not only easy to assemble but also have high assembly reliability.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] In one aspect, a busbar support assembly is provided, comprising:

[0008] A plurality of busbar bodies, each of which is used to connect two adjacent single cells, each of which is provided with a connecting through-hole and a buffer groove concave toward the single cell, each of which is provided with a pole connected to the busbar body, and the buffer groove is located between two adjacent poles;

[0009] A busbar bracket, wherein the busbar bracket is provided with a plurality of mounting positions for accommodating the busbar body, each of the mounting positions being provided with an avoidance groove corresponding to the buffer groove, a connecting column plugged into the connecting through hole, and an avoidance through hole plugged into the pole;

[0010] Along the first direction, the distance between two adjacent single cells is a, the thickness of the single cell is t, the width of the pole is b, the width of the avoidance groove is W, and 0<W<a+tb is satisfied.

[0011] Optionally, along the second direction, the height dimension of the pole is h, the depth dimension of the buffer groove is h1, the thickness dimension of the busbar body is t1, the thickness dimension of the busbar bracket is t2, the depth dimension of the avoidance groove is H, and h1-t1+t2<H<h is satisfied.

[0012] Optionally, a difference between a height dimension h of the pole and a depth dimension H of the avoidance groove satisfies: 0.3 mm ≤ hH ≤ 0.8 mm.

[0013] Optionally, the distance between the connecting through hole and the edge of the busbar body along the first direction is e1, and e1≥t1;

[0014] And / or, a distance between the connecting through hole and the edge of the busbar body along the third direction is e2, and e2≥t1.

[0015] Optionally, one end of the connecting column facing away from the busbar support passes through the connecting through hole and is riveted to the busbar body, and the riveted connecting column includes a riveted head and a column portion located between the riveted head and the busbar support;

[0016] Along the second direction, the distance between the surface of the rivet head facing the busbar body and the surface of the busbar body facing the busbar bracket is L, the thickness of the busbar body is t1, the diameter of the column part is D, and t1≤L≤2D is satisfied.

[0017] Optionally, the diameter of the riveted head is c, and satisfies c≥D+2mm.

[0018] Optionally, a thickness dimension of the riveted head along the second direction is t3, and satisfies 0.5 mm ≤ t3 ≤ 2 mm.

[0019] Optionally, the diameter of the connecting through hole is d, and d>D is satisfied.

[0020] Optionally, the diameter dimension D of the column portion satisfies D≥2.5 mm.

[0021] On the other hand, a battery module is provided, which includes a plurality of single cells and a busbar bracket assembly as described above, wherein the plurality of single cells are stacked in sequence along the thickness direction, and the busbar bracket assembly is arranged on one side where the poles of the plurality of single cells are located.

[0022] Beneficial effects of the present invention:

[0023] The present invention provides a busbar bracket assembly, which provides an avoidance groove corresponding to the buffer groove on the installation position of the busbar bracket for accommodating the busbar body, so that the protrusion of the buffer groove formed on the busbar body can be accommodated in the avoidance groove, thereby facilitating the assembly of the two. Moreover, since the buffer groove on the busbar body is located between two adjacent poles, the avoidance groove of the busbar bracket is also provided between the two poles. Therefore, by limiting the width dimension W of the avoidance groove to satisfy 0<W<a+tb, it is ensured that the avoidance groove has sufficient width along the first direction for accommodating the protrusion of the buffer groove formed on the busbar body, while avoiding the part of the protrusion of the avoidance groove formed by the busbar bracket being larger than the spacing between the two poles, resulting in interference between the busbar bracket and the poles, thereby ensuring assembly reliability.

[0024] The present invention also provides a battery module, which, by applying the above-mentioned busbar bracket assembly, not only ensures that the busbar body can reduce the probability of fatigue damage by setting a buffer groove, but also improves the convenience during assembly and increases the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of the busbar support assembly provided by the present invention after being assembled with a plurality of single cells;

[0026] Figure 2 yes Figure 1 A magnified view of the structure of the middle P part;

[0027] Figure 3 It is a structural schematic diagram of the busbar body in the busbar bracket assembly provided by the present invention;

[0028] Figure 4 It is a structural schematic diagram of the busbar bracket in the busbar bracket assembly provided by the present invention;

[0029] Figure 5 yes Figure 4 A magnified view of the structure of the N part;

[0030] Figure 6 This is a schematic diagram of the structure of a plurality of single battery cells stacked in a battery module provided by the present invention;

[0031] Figure 7 yes Figure 6 A magnified view of the structure of the middle K part;

[0032] Figure 8 This is a partial structural cross-sectional view of the busbar body and the busbar bracket in the busbar bracket assembly provided by the present invention after riveting;

[0033] Figure 9 This is a partial structural diagram of the busbar support assembly provided by the present invention when the busbar body and the busbar support are not riveted together;

[0034] Figure 10 This is a layout diagram of the connecting columns on the busbar support in the busbar support assembly provided by the present invention.

[0035] In the picture:

[0036] 100, single cell; 200, terminal;

[0037] 1. Busbar body; 11. Connection through hole; 12. Buffer groove;

[0038] 2. Busbar bracket; 21. Mounting position; 211. Avoidance groove; 212. Connecting column; 2121. Riveted joint; 2122. Column; 213. Avoidance through hole; 22. Bottom plate; 23. Partition. DETAILED DESCRIPTION

[0039] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0040] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0041] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0042] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0043] Since the busbar will be pulled when it is welded to the poles on two different battery cells, thereby increasing the probability of fatigue damage to the busbar, grooves are currently provided on the busbar as a buffer structure to reduce the probability of fatigue damage to the busbar. However, after providing the concave grooves on the busbar as a buffer structure, the busbar is no longer a planar structure, which makes it inconvenient to assemble the busbar and the busbar bracket, affecting the reliability of the assembly of the busbar and the busbar bracket.

[0044] Therefore, in order to facilitate the assembly of the bus bracket assembly and improve the reliability after assembly, this embodiment provides a bus bracket assembly, in which, for the sake of convenience of expression, the thickness direction of the single cell is defined as the first direction, the length direction of the single cell is defined as the second direction, and the width direction of the single cell is defined as the third direction.

[0045] like Figures 1 to 10 As shown, the busbar bracket assembly includes a plurality of busbar bodies 1 and a busbar bracket 2, each busbar body 1 is used to connect two adjacent single cells 100, each busbar body 1 is provided with a connecting through-hole 11 and a buffer groove 12 concave toward the single cell 100, each single cell 100 is provided with a pole 200 connected to the busbar body 1, and the buffer groove 12 is located between two adjacent poles 200, and the busbar bracket 2 is provided with a plurality of mounting positions 21 for accommodating the busbar body 1, each mounting position 21 is provided with an avoidance groove 211 corresponding to the buffer groove 12, a connecting column 212 plugged into the connecting through-hole 11, and an avoidance through-hole 213 plugged into the pole 200, along the first direction, the spacing dimension between two adjacent single cells 100 is a, the thickness dimension of the single cell 100 is t, the width dimension of the pole 200 is b, the width dimension of the avoidance groove 211 is W, and 0<W<a+tb is satisfied.

[0046] By providing an avoidance groove 211 corresponding to the buffer groove 12 on the mounting position 21 of the busbar bracket 2 for accommodating the busbar body 1, the protrusion of the buffer groove 12 formed on the busbar body 1 can be accommodated in the avoidance groove 211, thereby facilitating the assembly of the two. Moreover, since the buffer groove 12 on the busbar body 1 is located between two adjacent poles 200, the avoidance groove 211 of the busbar bracket 2 is also provided between the two poles 200. Therefore, by limiting the width dimension W of the avoidance groove 211 so as to satisfy 0<W<a+tb, it is ensured that the avoidance groove 211 has sufficient width along the first direction for accommodating the protrusion of the buffer groove 12 formed on the busbar body 1, while avoiding the protruding part of the avoidance groove 211 formed by the busbar bracket 2 being larger than the distance between the two poles 200, resulting in interference between the busbar bracket 2 and the poles 200, thereby ensuring assembly reliability.

[0047] In this embodiment, the busbar support 2 includes a base plate 22 and a plurality of partitions 23, wherein the plurality of partitions 23 are vertically connected to the base plate 22 to divide the busbar support 2 into mounting positions 21 corresponding to the plurality of busbar bodies 1. The number of connecting columns 212 provided on each mounting position 21 can be freely set according to requirements. In this embodiment, two connecting columns 212 are provided on each mounting position 21, and the distribution of the two connecting columns 212 on the mounting position 21 can be freely set according to requirements, such as Figure 10 As shown, from left to right are: the first distribution method is that both connecting columns 212 are arranged above the avoidance through-hole 213 along the third direction; the second distribution method is that both connecting columns 212 are arranged below the avoidance through-hole 213 along the third direction; the third distribution method is that both connecting columns 212 are arranged on the left side of the avoidance through-hole 213 along the first direction; the fourth distribution method is that both connecting columns 212 are arranged on the right side of the avoidance through-hole 213 along the first direction; the fifth distribution method is that one connecting column 212 is arranged on the upper left of the avoidance through-hole 213, and the other connecting column 212 is arranged on the lower right of the avoidance through-hole 213; the sixth distribution method is that one connecting column 212 is arranged on the lower left of the avoidance through-hole 213, and the other connecting column 212 is arranged on the upper right of the avoidance through-hole 213, wherein the connecting through-hole 11 opened on the busbar body 1 is adapted to the distribution method of the connecting columns 212 in the corresponding mounting position 21.

[0048] In this embodiment, in order to verify the influence of the size limitation of the width dimension W of the avoidance groove 211 on the assembly of the busbar body 1 and the busbar bracket 2, as shown in Table 1, four groups of embodiments and three groups of comparative examples are provided for verification.

[0049] Table 1

[0050]

[0051] It can be seen from Examples 1 to 4 that the width dimension W of the avoidance groove 211 all meets the range requirement of 0<W<a+tb. At this time, the avoidance groove 211 has sufficient width along the first direction to accommodate the buffer groove 12, and the protruding part of the avoidance groove 211 formed by the bus bracket 2 is also smaller than the distance between the two poles 200, so that the bus body 1 and the bus bracket 2 as well as the bus bracket 2 and the single battery 100 can be assembled smoothly.

[0052] It can be seen from Comparative Examples 1 to 3 that at this time, the width dimension W of the avoidance groove 211 is greater than the upper limit value of the limited range of 0<W<a+tb. At this time, the protruding part of the avoidance groove 211 formed by the busbar bracket 2 is greater than the distance between the two poles 200, resulting in interference between the busbar bracket 2 and the pole 200, making it impossible to install the busbar bracket 2.

[0053] Alternatively, as Figure 2 、 Figure 8 、 Figure 9 As shown, along the second direction, the height dimension of the pole 200 is h, the depth dimension of the buffer groove 12 is h1, the thickness dimension of the busbar body 1 is t1, the thickness dimension of the busbar support 2 is t2, and the depth dimension of the avoidance groove 211 is H, and they satisfy h1-t1+t2<H<h. By limiting the depth dimension H of the avoidance groove 211 to satisfy h1-t1+t2<H<h, this can prevent the avoidance groove 211 from being too shallow and unable to fully accommodate the protruding portion of the busbar body 1 due to the buffer groove 12, which would prevent the busbar body 1 from fitting tightly with the busbar support 2 and affect assembly. On the other hand, it can prevent the avoidance groove 211 from being too deep, resulting in a depth greater than the height of the pole 200, which would prevent the pole 200 from passing through the busbar support 2 and being welded to the busbar body 1.

[0054] In this embodiment, in order to verify the influence of the dimension limitation of the depth dimension H of the avoidance groove 211 on the assembly of the busbar body 1 and the busbar bracket 2, as shown in Table 2, four groups of embodiments and three groups of comparative examples are provided for verification.

[0055] Table 2

[0056]

[0057] It can be seen from Examples 5 to 8 that the depth dimension H of the avoidance groove 211 all meets the range requirement of h1-t1+t2<H<h. At this time, the depth of the avoidance groove 211 can completely accommodate the protruding part of the bus body 1 due to the buffer groove 12, thereby ensuring the smooth assembly of the bus bracket 2 and the bus body 1, and also ensuring that the pole 200 has a sufficient height, so that the pole 200 can smoothly pass through the bus bracket 2 and perform welding operations with the bus body 1.

[0058] It can be seen from comparative example 4 that at this time, the depth dimension H of the avoidance groove 211 is less than the lower limit value of the limited range of h1-t1+t2<H<h. At this time, the depth of the avoidance groove 211 is too shallow, resulting in the inability to fully accommodate the protruding part of the bus body 1 where the buffer groove 12 is set, causing the bus bracket 2 and the bus body 1 to interfere during assembly.

[0059] It can be seen from Comparative Examples 5 to 6 that at this time, the depth dimension H of the avoidance groove 211 is greater than the upper limit value of the limited range of h1-t1+t2<H<h, resulting in the height of the pole 200 being insufficient to support it passing through the busbar bracket 2 and the busbar body 1 for welding operation, resulting in the busbar body 1 and the pole 200 being unable to be connected.

[0060] Alternatively, as Figure 2 、 Figure 9 As shown, the difference between the height dimension h of the pole 200 and the depth dimension H of the avoidance groove 211 satisfies the condition 0.3 mm ≤ hH ≤ 0.8 mm. By limiting the difference between the height dimension h of the pole 200 and the depth dimension H of the avoidance groove 211 to 0.3 mm ≤ hH ≤ 0.8 mm, this prevents the pole 200 from extending too far beyond the busbar support 2, thereby preventing the pole 200 from being welded to the busbar body 1. Furthermore, it prevents the pole 200 from extending too far beyond the busbar support 2, thereby preventing the busbar body 1 from being tightly fitted to the busbar support 2 after being welded to the pole 200, resulting in an excessive assembly gap and affecting assembly reliability.

[0061] The difference between the height h of the pole 200 and the depth H of the avoidance groove 211 can be any value between 0.3 mm and 0.8 mm or a range between any two values, such as 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, etc.

[0062] Alternatively, as Figure 3As shown, the spacing dimension e1 between the connecting through-hole 11 and the edge of the busbar body 1 along the first direction satisfies e1 ≥ t1. By limiting the spacing dimension e1 between the connecting through-hole 11 and the edge of the busbar body 1 along the first direction to satisfy e1 ≥ t1, it is possible to prevent the connecting through-hole 11 from being too close to the edge of the busbar body 1 along the first direction, which could easily cause the edge of the busbar body 1 to collapse during machining of the connecting through-hole 11, ultimately making it impossible to machine the connecting through-hole 11 in the busbar body 1.

[0063] Alternatively, as Figure 3 As shown, the spacing dimension e2 between the connecting through-hole 11 and the edge of the busbar body 1 along the third direction satisfies e2 ≥ t1. By limiting the spacing dimension e2 between the connecting through-hole 11 and the edge of the busbar body 1 along the third direction to satisfy e2 ≥ t1, the connecting through-hole 11 is prevented from being too close to the edge of the busbar body 1 along the third direction, which could easily cause the edge of the busbar body 1 to collapse during machining of the connecting through-hole 11, ultimately making it impossible to machine the connecting through-hole 11 in the busbar body 1.

[0064] Alternatively, as Figure 8 As shown, one end of the connecting column 212 facing away from the busbar support 2 passes through the connecting through hole 11 and is riveted to the busbar body 1. The riveted connecting column 212 includes a riveted head 2121 and a column portion 2122 located between the riveted head 2121 and the busbar support 2.

[0065] Along the second direction, the distance between the surface of the rivet head 2121 facing the bus body 1 and the surface of the bus body 1 facing the bus bracket 2 is L, the thickness of the bus body 1 is t1, the diameter of the column part 2122 is D, and t1≤L≤2D is satisfied.

[0066] By limiting the spacing dimension L between the surface of the rivet head 2121 facing the bus body 1 and the surface of the bus body 1 facing the bus bracket 2 to satisfy t1≤L≤2D, on the one hand, it is avoided that the thickness dimension t1 of the bus body 1 is smaller than the thickness dimension t1, which causes the rivet head 2121 to excessively squeeze the bus body 1, causing the surface of the bus body 1 to deform and warp, making it easy for the bus body 1 and the pole 200 to become unsolderable. On the other hand, it is avoided that the diameter dimension D of the column part 2122 is greater than twice, which causes the spacing dimension L between the surface of the rivet head 2121 facing the bus body 1 and the surface of the bus body 1 facing the bus bracket 2 to be too large after riveting, resulting in the inability to achieve a tight connection between the bus body 1 and the bus bracket 2, and a large assembly gap between the two, resulting in the bus body 1 being not firmly fixed and prone to shaking, thereby reducing the reliability of assembly.

[0067] In this embodiment, in order to verify the influence of the size limitation of the spacing dimension L between the surface of the rivet head 2121 facing the bus body 1 and the surface of the bus body 1 facing the bus bracket 2 on the assembly of the bus body 1 and the bus bracket 2, as shown in Table 3, three groups of embodiments and two groups of comparative examples are provided for verification.

[0068] Table 3

[0069]

[0070] It can be seen from Examples 9 to 11 that the spacing dimension L between the surface of the riveted head 2121 facing the bus body 1 and the surface of the bus body 1 facing the bus bracket 2 all meet the range requirement of t1≤L≤2D. At this time, the spacing between the surface of the riveted head 2121 facing the bus body 1 and the surface of the bus body 1 facing the bus bracket 2 ensures the close contact between the bus body 1 and the bus bracket 2 after riveting, and avoids the riveted head 2121 from excessively squeezing the bus body 1, thereby causing the bus body 1 to deform and desoldering from the pole 200.

[0071] It can be seen from Comparative Example 7 that at this time, the spacing dimension L between the surface of the riveted head 2121 facing the bus body 1 and the surface of the bus body 1 facing the bus bracket 2 is less than the lower limit value of the range t1≤L≤2D, that is, less than the thickness t1 of the bus body 1, which causes the riveted head 2121 to excessively squeeze the bus body 1, causing the surface of the bus body 1 to deform and warp, resulting in desoldering between the bus body 1 and the pole 200.

[0072] It can be seen from Comparative Example 8 that at this time, the spacing dimension L between the surface of the riveted head 2121 facing the bus body 1 and the surface of the bus body 1 facing the bus bracket 2 is greater than the upper limit value of the range. At this time, after riveting, the spacing dimension L between the surface of the riveted head 2121 facing the bus body 1 and the surface of the bus body 1 facing the bus bracket 2 is too large, resulting in the inability to achieve a tight connection between the bus body 1 and the bus bracket 2. There is a large assembly gap between the two, which causes the bus body 1 to be unreliably fixed and prone to shaking, thereby reducing the reliability of the assembly.

[0073] Alternatively, as Figure 8 As shown, the diameter of the rivet head 2121 is c, and c ≥ D + 2 mm is satisfied. By limiting the diameter c of the rivet head 2121 to satisfy c ≥ D + 2 mm, the contact area between the rivet head 2121 and the busbar body 1 is ensured to be sufficiently large, thereby ensuring the strength of the rivet head 2121 in limiting and fixing the busbar body 1.

[0074] Alternatively, as Figure 8 As shown, the thickness dimension t3 of the rivet joint 2121 along the second direction satisfies 0.5 mm ≤ t3 ≤ 2 mm. By limiting the thickness dimension t3 of the rivet joint 2121 along the second direction, the rivet joint 2121 is ensured to have sufficient strength, thereby preventing the busbar body 1 from impacting the rivet joint 2121 during vibration, thereby damaging the rivet joint 2121 and causing separation of the busbar body 1 from the busbar bracket 2.

[0075] The thickness dimension t3 of the riveted head 2121 along the second direction may be any value between 0.5 mm and 2 mm or a range between any two values, such as 0.5 mm, 1 mm, 1.5 mm, 2 mm, etc.

[0076] Alternatively, as Figure 3 、 Figure 8 As shown, the diameter of the connecting hole 11 is d, and d> D. By limiting the diameter d of the connecting hole 11 to be larger than the diameter D of the column portion 2122 , the connecting column 212 can pass through the connecting hole 11 during assembly.

[0077] Alternatively, as Figure 8 As shown, the diameter D of the column portion 2122 satisfies D ≥ 2.5 mm. By limiting the diameter D of the column portion 2122 to D ≥ 2.5 mm, the column portion 2122 is ensured to have sufficient tensile strength to prevent the busbar body 1 from impacting the riveted joint 2121 during vibration, causing the column portion 2122 to break and the busbar body 1 to separate from the busbar bracket 2.

[0078] In this embodiment, if Figure 1 As shown, a battery module is also provided, which includes multiple single cells 100 and the above-mentioned busbar bracket assembly. The multiple single cells 100 are stacked in sequence along the thickness direction, and the busbar bracket assembly is arranged on the side where the poles 200 of the multiple single cells 100 are located.

[0079] By applying the above-mentioned busbar bracket assembly, the battery module not only ensures that the busbar body 1 can reduce the probability of fatigue damage by providing the buffer groove 12, but also improves the convenience during assembly and increases the assembly efficiency.

[0080] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. The busbar bracket assembly is characterized by: The busbar support assembly includes: A plurality of busbar bodies, each of which is used to connect two adjacent single cells, each of which is provided with a connecting through-hole and a buffer groove concave toward the single cell, each of which is provided with a pole connected to the busbar body, and the buffer groove is located between two adjacent poles; A busbar bracket, wherein the busbar bracket is provided with a plurality of mounting positions for accommodating the busbar body, each of the mounting positions being provided with an avoidance groove corresponding to the buffer groove, a connecting column plugged into the connecting through hole, and an avoidance through hole plugged into the pole; Along the first direction, the distance between two adjacent single cells is a, the thickness of the single cell is t, the width of the pole is b, the width of the avoidance groove is W, and 0<W<a+tb is satisfied.

2. The busbar support assembly according to claim 1, characterized in that: Along the second direction, the height dimension of the pole is h, the depth dimension of the buffer groove is h1, the thickness dimension of the busbar body is t1, the thickness dimension of the busbar bracket is t2, the depth dimension of the avoidance groove is H, and h1-t1+t2<H<h is satisfied.

3. The busbar support assembly according to claim 2, characterized in that: The difference between the height dimension h of the pole and the depth dimension H of the avoidance groove satisfies 0.3 mm ≤ hH ≤ 0.8 mm.

4. The busbar support assembly according to claim 2, characterized in that: The distance between the connecting through hole and the edge of the busbar body along the first direction is e1, and e1≥t1; And / or, a distance between the connecting through hole and the edge of the busbar body along the third direction is e2, and e2≥t1.

5. The busbar support assembly according to claim 1, characterized in that: One end of the connecting column facing away from the busbar support passes through the connecting through hole and is riveted to the busbar body. The riveted connecting column includes a riveted head and a column portion located between the riveted head and the busbar support. Along the second direction, the distance between the surface of the rivet head facing the busbar body and the surface of the busbar body facing the busbar bracket is L, the thickness of the busbar body is t1, the diameter of the column part is D, and t1≤L≤2D is satisfied.

6. The busbar support assembly according to claim 5, characterized in that: The diameter of the riveted head is c, and satisfies c≥D+2mm.

7. The busbar support assembly according to claim 5, characterized in that: The thickness dimension of the rivet head along the second direction is t3, and satisfies 0.5 mm ≤ t3 ≤ 2 mm.

8. The busbar support assembly according to claim 5, characterized in that: The diameter of the connecting through hole is d, and satisfies d>D.

9. The busbar support assembly according to claim 5, characterized in that: The diameter D of the column portion satisfies D≥2.5 mm.

10. A battery module, characterized in that: The battery module includes a plurality of single cells and a busbar support assembly as described in any one of claims 1 to 9, wherein the plurality of single cells are stacked in sequence along the thickness direction, and the busbar support assembly is provided on one side where the poles of the plurality of single cells are located.

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