Electrical part support and battery pack

Abstract

The embodiment of the utility model discloses an electrical part support and a battery pack. The support comprises a fixing part, a first supporting part and a second supporting part, wherein the first supporting part and the second supporting part are arranged on the two sides of the fixing part in the X direction; the first supporting part is used for supporting a BDU, and the second supporting part is used for supporting a BMS; the fixing piece comprises a first fixing plate and a second fixing plate which are provided with a gap in the X direction, the first fixing plate is used for fixing the BDU, and the second fixing plate is used for fixing the BMS. According to the embodiment of the invention, the BDU and the BMS save space and are stably installed in the battery pack.

Description

Technical Field

[0001] This application relates to the technical field of batteries, and particularly to an electrical component bracket and a battery pack. Background Art

[0002] Currently, in the new energy industry, batteries are integrated into a box, and at the same time, a cold plate, heat insulation materials, collection wire harnesses, high-voltage lines, BMS (Battery Management System), BDU (Battery System Distribution Box), etc. are all placed into this box, with a high degree of integration. However, in the existing installation methods, important components such as BMS and BDU are both distributed dispersedly in the box, making it difficult to make full and reasonable use of the space inside the box. The connection strength between each component and the box is weak, and the stability is poor. Moreover, since there are many connections between BDU and BMS, fixing them separately and dispersedly increases the space and time for signal transmission between the two, and at the same time, it will result in poor connection stability between the two, thereby affecting the reliability of the entire battery system. Summary of the Utility Model

[0003] This application aims to solve at least one of the technical problems existing in the prior art. For this reason, this application proposes an electrical component bracket and a battery pack to achieve a space-saving and stable installation of BDU and BMS in the battery pack.

[0004] In a first aspect, this application provides an electrical component bracket, including a fixing member, and a first support portion and a second support portion disposed on both sides of the fixing member along the X direction;

[0005] The first support portion is used to support the BDU, and the second support portion is used to support the BMS;

[0006] The fixing member includes a first fixing plate and a second fixing plate having a gap along the X direction. The first fixing plate is used to fix the BDU, and the second fixing plate is used to fix the BMS.

[0007] In an embodiment of the above electrical component bracket,

[0008] The first fixing plate and the second fixing plate are relatively parallel and spaced apart along the X direction;

[0009] The first support portion is plate-shaped, is angularly connected to the first fixing plate and extends in the X direction;

[0010] The second support portion is plate-shaped, is angularly connected to the second fixing plate and extends in the X direction;

[0011] Wherein, the extending directions of the first support portion and the second support portion are opposite to each other.

[0012] In an embodiment of the above electrical component bracket,

[0013] The top parts of the first fixing plate and the second fixing plate along the Z direction are connected by a connecting plate; the first supporting part, the second supporting part, the first fixing plate, the second fixing plate and the connecting plate are of an integrally formed structure.

[0014] In one embodiment of the above electrical component bracket,

[0015] Fixing ears are respectively arranged at both ends of the first fixing plate and the second fixing plate along the Y direction, and the fixing ears are used for fixing the electrical component bracket;

[0016] The fixing ear includes a fixing part extending along the Z direction and a limiting part extending along the Y direction. The fixing part is vertically arranged with the fixing piece, and the limiting part abuts against the BDU or the BMS;

[0017] The limiting part has a spacing from the first supporting part and the second supporting part in the Z direction.

[0018] In one embodiment of the above electrical component bracket,

[0019] The bracket further includes an avoidance part, and the avoidance part includes a part avoidance opening arranged on the fixing piece and a wire harness avoidance opening arranged on the second supporting part;

[0020] The part avoidance opening is arranged at corresponding positions on the tops of the first fixing plate and the second fixing plate along the Z direction, and the part avoidance opening is used for avoiding the external high-voltage connection busbar of the BDU.

[0021] In a second aspect, the present application provides a battery, including a box body and the electrical component bracket as described in any one of the first aspects installed in the box body.

[0022] In one embodiment of the above battery pack,

[0023] The box body includes a battery installation cavity and an electrical component installation cavity; the electrical component bracket is installed in the electrical component installation cavity; the battery installation cavity and the electrical component installation cavity are separated by a moving beam.

[0024] In one embodiment of the above battery pack,

[0025] Sliding channels are arranged on the inner walls on both sides of the box body along the Y direction, and the moving beam moves back and forth along the X direction through the sliding channels to adjust the sizes of the battery installation cavity and the electrical component installation cavity.

[0026] In one embodiment of the above battery pack,

[0027] On both sides inside the box body, there are fixed jigs, and the fixed jigs are used to fix the position of the moving beam.

[0028] In one embodiment of the above battery pack,

[0029] The fixed jig includes a fixed shaft and a fixed buckle that rotates around the fixed shaft; one end of the fixed shaft is fixedly installed on the box body, and the fixed buckle can rotate and abut against the moving beam.

[0030] One or more of the above embodiments of the present application have at least one or more of the following beneficial effects:

[0031] In the present application, the bracket can centrally install the BMS and the BDU through the design of the fixing member, which is beneficial to the signal connection between the two, shortens the space and time of signal transmission, reduces the length of the wire harness, saves the material cost, improves the competitiveness of the product, and at the same time improves the overall space volume utilization rate of the battery pack; the bracket of the present application effectively improves the stability and rigidity of the bracket through the design of the support part structure and the cooperation with the fixing member, as well as the multi-fixed plate structure form of the fixing member, thereby improving the stability effect of the BDU and the BMS.

[0032] The additional aspects and advantages of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present application. Description of the Drawings

[0033] Referring to the accompanying drawings, the disclosure of the present application will become more understandable. It is easy for those skilled in the art to understand that: these drawings are only for the purpose of illustration and are not intended to limit the protection scope of the present application. In addition, similar numbers in the drawings are used to represent similar components, where:

[0034] Figure 1 is a schematic structural diagram of an electrical component bracket in an embodiment of the present application;

[0035] Figure 2 is a front view structural diagram of an electrical component bracket in an embodiment of the present application;

[0036] Figure 3 is a schematic structural diagram of an electrical component bracket for installing the BDU and the BMS in an embodiment of the present application;

[0037] Figure 4 is a schematic structural diagram of a battery pack in an embodiment of the present application;

[0038] Figure 5 is a schematic structural diagram of the box body of a battery pack in an embodiment of the present application;

[0039] Figure 6It is a schematic structural diagram of a fixed tooling and a moving beam from one perspective in an embodiment of the present application;

[0040] Figure 7 It is a schematic structural diagram of a fixed tooling and a moving beam from another perspective in an embodiment of the present application. Detailed implementation manners

[0041] Some embodiments of the present application will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present application and are not intended to limit the protection scope of the present application.

[0042] It should be noted that in the description of the present application, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0043] In addition, it should also be noted that in the description of the present application, unless otherwise clearly specified and limited, the terms "installation", "setting", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can also be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0044] As described in the background art, currently various components are installed in the battery box with high integration. However, due to the too large shape differences of BMS, BDU and other materials, the sizes of BMS and BUD are large, and there are many high-voltage and low-voltage connections between BMS and BUD, it is very difficult to make full and reasonable use of the space inside the box. Based on this, the present application proposes an electrical component bracket to realize the space-saving and stable installation of BDU and BMS in the battery pack.

[0045] Refer to the attached Figure 1 , Figure 1 It is a schematic structural diagram of an electrical component bracket according to an embodiment of the present application. As Figure 1As shown, the present application provides an electrical component bracket, including a fixing member 100 and a first support portion 201 and a second support portion 202 arranged on both sides of the fixing member 100 along the X direction; the first support portion 201 is used to support the BDU, and the second support portion 202 is used to support the BMS; the fixing member 100 includes a first fixing plate 101 and a second fixing plate 102 with a gap along the X direction, the first fixing plate 101 is used to fix the BDU, and the second fixing plate 102 is used to fix the BMS. The present application aims to centrally install the BMS and the BDU together through the design of the fixing member 100, which is conducive to the signal connection between the two, shortens the space and time of signal transmission, reduces the length of the wiring harness, saves material costs, improves the competitiveness of the product, and improves the overall space volume utilization of the battery pack; the bracket of the present application cooperates with the fixing member 100 through the support part structure design, and the multi-fixing plate structure of the fixing member 100, so that the BDU and the BMS are convenient for fixed installation, and the multi-layer structure effectively improves the stability and rigidity of the bracket, thereby improving the stability effect of the BDU and the BMS.

[0046] In one embodiment, if Figure 1 and Figure 2 As shown, the first fixing plate 101 and the second fixing plate 102 are relatively parallel and spaced along the X direction; the first supporting portion 201 is plate-shaped, connected to the first fixing plate 101 at an angle and extending toward the X direction; the second supporting portion 202 is plate-shaped, connected to the second fixing plate 102 at an angle and extending toward the X direction; wherein, the extension directions of the first supporting portion 201 and the second supporting portion 202 are mutually divergent, that is, the supporting portion is connected to the fixing member 100 on the corresponding side, so that the entire electrical component bracket is in a "J" shape, and electrical components can be fixed on both sides of the fixing member 100, and the extension area of the first supporting portion 201 is greater than the extension area of the second supporting portion 202. Therefore, the first supporting portion 201 can be used to support the BDU fixed on the first fixing plate 101, and the second supporting portion 202 can be used to support the BMS fixed on the second fixing plate 102, thereby playing a stable supporting role.

[0047] In one embodiment, the first fixing plate 101 and the second fixing plate 102 are connected at the top along the Z direction via a connecting plate 103; the first supporting portion 201, the second supporting portion 202, the first fixing plate 101, the second fixing plate 102 and the connecting plate 103 adopt an integrated molding structure, and the integrated structure can effectively improve the strength of the bracket, thereby more stably supporting and fixing the electrical components.

[0048] In a possible implementation, a number of protruding portions 2011 are arranged at intervals on the first support portion 201. Since there are several relays and conductive copper bars in the BDU and the weight is relatively large, the protruding portions 2011 are designed on the support portion thereof. The uneven structure can improve the strength, not only enhancing its bearing capacity, but also the protruding space adding a heat dissipation channel for the BDU. It should be understood that according to the actual space, the second support portion 202 can also be designed with protruding portions 2011. Figure 1 It is not a specific limitation on the shape and number of the protrusions 2011.

[0049] In a possible implementation, the entire bracket is made of sheet metal. The first fixing plate 101 and the second fixing plate 102 are double-layer sheet metals, which greatly improve the strength of the bracket. A gap is provided between the first fixing plate 101 and the second fixing plate 102, which can leave space for bolts when fixing the BDU or BMS.

[0050] In one implementation, fixing ears 300 are respectively arranged at both ends of the first fixing plate 101 and the second fixing plate 102 along the Y direction. The fixing ears 300 are used to fix the electrical component bracket; the fixing ears 300 include a fixing portion 301 extending along the Z direction and a limiting portion 302 extending along the Y direction. The fixing portion 301 is perpendicularly arranged to the fixing member 100, and the limiting portion 302 abuts against the BDU or BMS to limit the BDU and BMS, preventing the BDU and BMS from shaking in the Y direction; the limiting portion 302 has a spacing from the first support portion 201 and the second support portion 202 in the Z direction. The entire fixing ear 300 is in an "L" shape. Multiple bolt holes can be adaptively arranged on the fixing portion 301 according to its extending area for fixed connection with the battery pack box body. Multiple bolts are used for connection on both sides. The extending area of the fixing portion 301 is adaptively adjusted according to the size of the electrical component fixed by this part. The design of the spacing between the limiting portion 302 and the support portion is beneficial to the passing of other electrical components or connecting wires, and at the same time provides a heat dissipation space on both sides of the BDU and BMS.

[0051] In one implementation, the bracket further includes an avoidance portion. The avoidance portion includes a component avoidance opening 401 arranged on the fixing member 100 and a wire harness avoidance opening 402 arranged on the second support portion 202; the component avoidance opening 401 is arranged at the top of the first fixing plate 101 and the second fixing plate 102 along the Z direction, at the position corresponding to the avoidance opening portion. The component avoidance opening 401 is used to avoid the external high-voltage connection bus bar of the BDU. The setting of the avoidance portion not only facilitates the connection and passing of the wire harness and components, but also reduces the weight of the bracket itself, achieving the effect of weight reduction.

[0052] Based on the above implementation, as Figure 3As shown in the figure, it is a structural diagram of an electrical component bracket after installing the BDU and BMS. The BDU is fixed on the first fixing plate 101 and supported by the first supporting part 201. The BMS is fixed on the second fixing plate 102 and supported by the second supporting part 202. The high and low voltage conductive copper busbar 501 connecting the BDU to the outside of the battery pack passes through the part avoidance opening 401 to connect to the outside. The connecting wire harness 502 between the BDU and the BMS passes through the wire harness avoidance opening 402 to connect, or can also pass through the gap between the fixing part and the fixing ear 300 to connect. The entire bracket can arrange the BDU and the BMS in a more perfect way, while reducing the space and time for signal transmission between the two, reducing the wire harness length, saving the material cost, greatly enhancing the competitiveness of the product, and at the same time improving the space volume utilization rate of the whole package.

[0053] Furthermore, as Figure 4 shown, the present application also provides a battery pack, including a box body 20 and the electrical component bracket 10 as described above installed in the box body 20. The BDU and the BMS are installed on the electrical component bracket 10. The electrical component bracket 10 is installed on the box body 20 through the fixing part 301. Among them, the specific structure of the electrical component bracket 10 for installing the BDU and the BMS can be seen in the above-mentioned embodiments, and the repeated parts will not be described again. A battery module is also installed in the box body 20 of the battery pack. The battery module is composed of one or more battery cells 30. Among them, the battery cells 30 can be separated by foam or heat insulation pads or other materials to achieve the effects of heat insulation or buffering or both heat insulation and buffering. The battery cells 30 can also be directly attached to each other without adding anything, which is designed according to actual needs. In this example, the box body 20 can be welded from profiles, or can be formed by stamping sheet metal, or can also be made of rolled steel.

[0054] In one embodiment, as Figure 4 and Figure 5 shown, the box body 20 includes a battery installation cavity 21 and an electrical component installation cavity 22; the electrical component bracket 10 is installed in the electrical component installation cavity 22. The battery installation cavity 21 is mainly used for installing the battery module or the battery cells 30. For example, the battery cells 30 are installed in the battery installation cavity 21 in an array in the X direction and the Y direction; the battery installation cavity 21 and the electrical component installation cavity 22 are separated by a moving beam 40. The moving beam 40 can adjust the relative size between the battery installation cavity 21 and the electrical component installation cavity 22 by moving, so as to reasonably arrange their installation spaces according to the actual size of the battery module or the battery cells, and the size of each electrical component.

[0055] In a possible embodiment, slideways 23 are provided on the inner walls on both sides of the box body 20 along the Y direction. The moving beam 40 moves back and forth along the X direction through the slideways 23 to adjust the sizes of the battery installation cavity 21 and the electrical component installation cavity 22, so that the BMS, the BDU and various electrical components and the battery cells 30 can be arranged in the box body with the most space-saving layout.

[0056] In a possible implementation, fixing fixtures 50 are provided on both sides of the box 20. The fixing fixtures 50 are used to fix the position of the moving beam 40. The fixing fixtures 50 fix the moving beam 40 after it is adjusted to a suitable position to prevent the moving beam 40 in the box 20 from shaking during the use of the battery pack, thereby avoiding damage and extrusion of parts caused by its movement. Furthermore, the fixing fixtures 50 are fixedly arranged at the place closest to the installation of the BDU to limit the moving beam 40 to prevent the electrical component installation cavity 22 from being too small and squeezing the BDU and BMS.

[0057] In one possible implementation, Figures 5 - 7 As shown, the fixing fixture 50 includes a fixing shaft 51 and a fixing buckle 52 that rotates around the fixing shaft 51; one end of the fixing shaft 51 is fixedly mounted on the box body 20, and the fixing buckle 52 can rotate to abut against the moving beam 40, thereby fixing the moving beam 40. Specifically, the fixing fixture 50 is installed on both sides of the box body 20, with a symmetrical design. One end of the fixing shaft 51 is installed on a fixing plate 53, and the position of the fixing plate 53 can be at the position closest to the installation BDU. The limit frame 41 and the bottom edge of the fixing plate 53 are on the same horizontal line, that is, they are both installed on the slide 23. The protrusion 42 at one end of the moving beam 40 is limited in the limit frame 41, and the limit frame 41 slides in the slide 23 to drive the moving beam 40 to move. The protrusion 42 has a certain moving space in the limit frame 41, which is convenient for adjusting the position; the outer surface of the fixing buckle 52 around the fixing shaft 51 has different distances from the axis center, That is, the thickness of the fixed buckle 52 at different positions around the axis is different. Therefore, the distance between the fixed buckle 52 and the moving beam 40 will be different during the rotation. When the moving beam 40 moves close to the BDU, the fixed buckle 52 is rotated around the fixed axis 51 to make the thicker side of the fixed buckle 52 contact the moving beam 40. If the material of the fixed buckle 52 is soft, the maximum thickness of the fixed buckle 52 is greater than or equal to the distance from the fixed axis 51 to the moving beam 40, and the moving beam 40 can be made unable to move in the limit frame 40, thereby fixing the position of the moving beam 40 and preventing the moving beam 40 from further moving.

[0058] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0059] Although the embodiments of the present application have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. An electrical component bracket, characterized in that, It includes a fixing member, and a first support portion and a second support portion disposed on both sides of the fixing member along the X direction; The first support portion is used to support the BDU, and the second support portion is used to support the BMS; The fixing member includes a first fixing plate and a second fixing plate having a gap along the X direction. The first fixing plate is used to fix the BDU, and the second fixing plate is used to fix the BMS.

2. The electrical component bracket according to claim 1, wherein, The first fixing plate and the second fixing plate are relatively parallel and spaced apart along the X direction; The first support portion is plate-shaped, is angularly connected to the first fixing plate and extends toward the X direction; The second support portion is plate-shaped, is angularly connected to the second fixing plate and extends toward the X direction; Wherein, the extending directions of the first support portion and the second support portion are away from each other.

3. The electrical component bracket according to claim 1, characterized in that, The tops of the first fixing plate and the second fixing plate along the Z direction are connected by a connecting plate; the first support portion, the second support portion, the first fixing plate, the second fixing plate and the connecting plate adopt an integrally formed structure.

4. The electrical component bracket according to claim 1, characterized in that, Both ends of the first fixing plate and the second fixing plate along the Y direction are respectively provided with fixing ears, and the fixing ears are used to fix the electrical component bracket; The fixing ear includes a fixing portion extending along the Z direction and a limiting portion extending along the Y direction. The fixing portion is perpendicularly arranged with respect to the fixing member, and the limiting portion abuts against the BDU or the BMS; The limiting portion has a spacing from the first support portion and the second support portion in the Z direction.

5. The electrical component bracket according to any one of claims 1-4, characterized in that, The bracket further includes an avoidance portion, and the avoidance portion includes a component avoidance opening provided on the fixing member and a wire harness avoidance opening provided on the second support portion; The component avoidance opening is arranged at a corresponding position on the tops of the first fixing plate and the second fixing plate along the Z direction, and the component avoidance opening is used to avoid the external high-voltage connection bus bar of the BDU.

6. A battery pack, characterized in that, It includes a box body and an electrical component bracket as described in any one of claims 1-5 installed in the box body.

7. The battery pack according to claim 6, wherein The box body includes a battery installation cavity and an electrical component installation cavity; the electrical component bracket is installed in the electrical component installation cavity; the battery installation cavity and the electrical component installation cavity are separated by a moving beam.

8. The battery pack according to claim 7, wherein Sliding grooves are provided on both inner walls of the box body along the Y direction, and the moving beam moves back and forth along the X direction through the sliding grooves to adjust the sizes of the battery installation cavity and the electrical component installation cavity.

9. The battery pack according to claim 7 or 8, characterized in that, Fixing tools are provided on both sides inside the box body, and the fixing tools are used to fix the position of the moving beam.

10. The battery pack according to claim 9, wherein, The fixing tool includes a fixing shaft and a fixing buckle that rotates around the fixing shaft; one end of the fixing shaft is fixedly installed on the box body, and the fixing buckle can rotate and abut against the moving beam.

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