Mounting bracket, battery pack and electric device

Abstract

The utility model provides a mounting bracket, a battery pack and an electric device, and relates to the technical field of battery manufacturing. The mounting bracket comprises a bottom plate, a plug strip and a cross beam, a runner is arranged in the bottom plate; the bottom plate is used for installing the cell module. The plug strips are hermetically connected to two ends of the bottom plate; and the plug strip is provided with an inlet and an outlet which are communicated with the runner. The cross beam is connected with the plug strip; a first through hole and a second through hole are formed in the cross beam, the first through hole is communicated with the inlet, and the second through hole is communicated with the outlet. According to the mounting bracket, the bottom plate and the heat exchange plate are integrated, and a heat exchange medium can enter and exit conveniently through communication of the bottom plate and the cross beam. The space utilization rate and the heat exchange efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing, and more specifically, to a mounting bracket, a battery pack, and an electrical device. Background Art

[0002] In a double-layer battery pack structure, for the installation of the upper-layer battery cell module, the existing installation method is to design a bracket welded by sheet metal or profiles, then lay a water-cooling plate on the bracket for fixation, and supplement it with the installation of movable crossbeams at both ends to limit the battery cell module. This installation method will cause serious waste of structural space dimensions, low space utilization rate, and relatively large overall weight. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a mounting bracket, a battery pack, and an electrical device. The mounting bracket has a compact structure, can improve space utilization rate, and reduce the overall weight.

[0004] Embodiments of the utility model are implemented as follows:

[0005] In a first aspect, the utility model provides a mounting bracket, including:

[0006] A bottom plate, in which a flow channel is provided; the bottom plate is used for installing a battery cell module;

[0007] A plug strip, which is hermetically connected to both ends of the bottom plate; an inlet and an outlet communicating with the flow channel are provided on the plug strip;

[0008] A crossbeam, which is connected to the plug strip; a first through hole and a second through hole are provided on the crossbeam, the first through hole communicates with the inlet, and the second through hole communicates with the outlet.

[0009] In an alternative embodiment, the plug strip includes a connected sealing portion and a connecting portion, the sealing portion extends into the bottom plate to limit the flow direction of the flow channel; the connecting portion is connected to the crossbeam.

[0010] In an alternative embodiment, the plug strip includes a first plug strip and a second plug strip, the first plug strip is provided at one end of the bottom plate, and the second plug strip is provided at the other end of the bottom plate; the first plug strip and the second plug strip respectively include the sealing portion and the connecting portion;

[0011] Two mounting bumps are provided on the first plug strip or the second plug strip; alternatively, one mounting bump is provided on each of the first plug strip and the second plug strip; the mounting bumps are located on a side of the connecting portion away from the sealing portion; an inlet penetrating through the sealing portion and the connecting portion is provided on one of the mounting bumps, and an outlet penetrating through the sealing portion and the connecting portion is provided on the other mounting bump; the mounting bumps are connected to the cross beam.

[0012] In an alternative embodiment, the cross beam includes a main body and a mounting portion provided on one side of the main body, and the mounting portion is connected to the mounting bump.

[0013] In an alternative embodiment, a jack for plugging and mating with the mounting bump is provided on the mounting portion; a cavity communicating with the inlet and the outlet is provided on the main body; a first through hole and a second through hole are formed on a side of the main body away from the mounting portion, and the first through hole and the second through hole communicate with the cavity respectively; the first through hole and the second through hole are respectively used for connecting external pipelines.

[0014] In an alternative embodiment, the main body includes a first large surface, a second large surface, and a side surface connecting the first large surface and the second large surface; the cavity has an opening on the side surface of the main body, and a blocking piece is provided at the opening.

[0015] In an alternative embodiment, a relief groove is formed on the main body.

[0016] In an alternative embodiment, a plurality of partition ribs are provided inside the bottom plate, and flow channels are formed between adjacent partition ribs; some of the partition ribs are in contact with the plug strip, and there are gaps between some of the partition ribs and the plug strip.

[0017] In a second aspect, the present utility model provides a battery pack, including the mounting bracket as described in any one of the foregoing embodiments and at least two layers of battery cell modules, and the upper battery cell module is mounted on the bottom plate.

[0018] In a third aspect, the present utility model provides an electrical device, including a device body and the battery pack as described in the foregoing embodiments.

[0019] The beneficial effects of the embodiments of the present utility model include:

[0020] For the mounting bracket provided by the embodiments of the present utility model, flow channels are provided on the bottom plate, the bottom plate and the heat exchange plate are integrated into one body, and the bottom plate and the cross beam are ingeniously connected through the plug strip to realize the inlet and outlet of the heat exchange medium, which is convenient for installation, has a compact structure, high heat exchange efficiency, improves the space utilization rate of the battery pack, and is beneficial to reducing the overall weight.

[0021] The battery pack and the electrical device provided by the embodiments of the present utility model include the above-mentioned mounting bracket, and a bottom plate for mounting the upper battery cell module, which not only plays a role in supporting and bearing, but also can play a role in heat exchange. The structure is compact, which is beneficial to improving the space utilization rate and reducing the overall weight. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0023] Figure 1 Structural schematic diagram of the mounting bracket provided by the embodiment of the present utility model;

[0024] Figure 2 Cross-sectional structural schematic diagram of the mounting bracket provided by the embodiment of the present utility model;

[0025] Figure 3 Structural schematic diagram of the plugging piece of the mounting bracket provided by the embodiment of the present utility model after being disassembled;

[0026] Figure 4 For Figure 3 Partial enlarged schematic diagram at position A in

[0027] Figure 5 Structural schematic diagram of the first plug strip of the mounting bracket provided by the embodiment of the present utility model from the first perspective;

[0028] Figure 6 Structural schematic diagram of the first plug strip of the mounting bracket provided by the embodiment of the present utility model from the second perspective;

[0029] Figure 7 Structural schematic diagram of the cross beam of the mounting bracket provided by the embodiment of the present utility model from the first perspective;

[0030] Figure 8 Structural schematic diagram of the cross beam of the mounting bracket provided by the embodiment of the present utility model from the second perspective;

[0031] Figure 9 Structural schematic diagram of the cross beam of the mounting bracket provided by the embodiment of the present utility model from the third perspective;

[0032] Figure 10 Structural schematic diagram of the second plug strip of the mounting bracket provided by the embodiment of the present utility model;

[0033] Figure 11Schematic diagram of the cross beam connected to the second plug strip in the mounting bracket provided by the embodiment of the present utility model.

[0034] Icon: 100 - mounting bracket; 110 - bottom plate; 111 - flow channel; 113 - partition rib; 120 - plug strip; 121 - inlet; 122 - outlet; 123 - sealing part; 124 - connecting part; 125 - mounting bump; 130 - cross beam; 131 - first through hole; 132 - second through hole; 133 - main body; 134 - mounting part; 135 - jack; 136 - cavity; 137 - external pipeline; 141 - first large surface; 142 - second large surface; 143 - side surface; 145 - blocking piece; 146 - relief groove; 147 - mounting through hole. Detailed implementation manners

[0035] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. The components of the embodiments of the present utility model usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0037] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0038] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0039] In addition, terms such as "horizontal" and "vertical" do not require the components to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0040] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "arranged", "installed", "connected", and "coupled" 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 a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0041] Please refer to Figures 1 to 6 , this embodiment provides a mounting bracket 100, which is applicable to a battery pack with a multi-layer battery cell module. The mounting bracket 100 is mainly used to mount the upper-layer battery cell module. The mounting bracket 100 includes a bottom plate 110, a plug strip 120, and a cross beam 130. A flow channel 111 is provided in the bottom plate 110. The bottom plate 110 is used to mount the battery cell module. The plug strip 120 is sealingly connected to both ends of the bottom plate 110. An inlet 121 and an outlet 122 communicating with the flow channel 111 are provided on the plug strip 120. The cross beam 130 is connected to the plug strip 120. A first through hole 131 and a second through hole 132 are formed in the cross beam 130. The first through hole 131 communicates with the inlet 121, and the second through hole 132 communicates with the outlet 122. The mounting bracket 100 integrates the bottom plate 110 and the heat exchange plate into one body, improving the structural strength, and having both the functions of bearing and heat exchange. Through the communication between the bottom plate 110 and the cross beam 130, it is convenient for the heat exchange medium to enter and exit. The structure is compact, improving the space utilization rate and the heat exchange efficiency.

[0042] The plug strip 120 includes a connected sealing portion 123 and a connecting portion 124. The sealing portion 123 extends into the bottom plate 110 to restrict the flow direction of the flow channel 111. The connecting portion 124 is connected to the cross beam 130. In this embodiment, there are two plug strips 120, including a first plug strip and a second plug strip. The first plug strip is arranged at one end of the bottom plate 110, and the second plug strip is arranged at the other end of the bottom plate 110; the first plug strip and the second plug strip respectively include a sealing portion 123 and a connecting portion 124. The first plug strip and the second plug strip are respectively sealingly connected to the bottom plate 110 to ensure the sealing of the flow channel 111 and prevent the leakage of the heat exchange medium.

[0043] Optionally, the bottom plate 110 is formed by profile extrusion. The plug strip 120 is made of aluminum alloy. A plurality of partition ribs 113 extending along the thickness direction of the bottom plate 110 are provided inside the bottom plate 110, and flow channels 111 are formed between adjacent partition ribs 113. Insertion interfaces for connecting with the plug strip 120 are respectively provided at both ends of the bottom plate 110. The sealing portion 123 of the plug strip 120 extends into the insertion interface of the bottom plate 110, and the plug strip 120 and the bottom plate 110 are welded to achieve a sealed connection. It can be understood that the distances between the ends of the plurality of partition ribs 113 and the insertion interface are not equal. In this way, after the plug strip 120 is installed into the insertion interface, some of the partition ribs 113 are in contact with the plug strip 120, and there are gaps between some other partition ribs 113 and the plug strip 120. The plug strip 120 in contact with the partition ribs 113 functions to block the flow channels 111, and the partition ribs 113 and the sealing portion 123 of the plug strip 120 are welded to improve the sealing performance of the connection. The gaps between some other partition ribs 113 and the plug strip 120 can allow the heat exchange medium to pass through, serving as a connection channel for two or more flow channels 111, so that the flow channels 111 are connected in series.

[0044] Two mounting bumps 125 are provided on the first plug strip or the second plug strip; alternatively, one mounting bump 125 is respectively provided on the first plug strip and the second plug strip. The mounting bumps 125 on the first plug strip or the second plug strip are both provided on the side of the connecting portion 124 away from the sealing portion 123. An inlet 121 penetrating through the sealing portion 123 and the connecting portion 124 is provided on one of the mounting bumps 125, and the inlet 121 is used for the heat exchange medium to flow into the flow channels 111 of the bottom plate 110. An outlet 122 penetrating through the sealing portion 123 and the connecting portion 124 is provided on the other mounting bump 125, and the outlet 122 is used for the heat exchange medium in the flow channels 111 to flow out of the bottom plate 110. The mounting bumps 125 are connected to the cross beam 130. It can be understood that the inlet 121 and the outlet 122 can be provided on the plug strip 120 at the same end, or can be respectively provided on the plug strips 120 at both ends. No specific limitation is made here.

[0045] In this embodiment, both of the two mounting bumps 125 are provided on the first plug strip, that is, at the same end of the bottom plate 110. Optionally, among the two mounting bumps 125, one mounting bump 125 is provided at one end of the first plug strip, and the other mounting bump 125 is provided at the other end of the first plug strip. The two mounting bumps 125 are at a relatively far distance from each other, which is beneficial to extending the path of the flow channels 111 and facilitating the subsequent installation of the liquid inlet and outlet pipes to provide sufficient operating space.

[0046] Combined with Figures 7 to 9, Optionally, the cross beam 130 is processed by profile extrusion and is in an L shape. The cross beam 130 includes a main body 133 and a mounting portion 134 provided on one side of the main body 133. The mounting portion 134 is connected to the mounting bump 125. The mounting portion 134 is provided with a jack 135 that is inserted and matched with the mounting bump 125. The main body 133 is provided with a cavity 136 that communicates with the inlet 121 and the outlet 122. A first through hole 131 and a second through hole 132 are formed on one side of the main body 133 away from the mounting portion 134. The first through hole 131 and the second through hole 132 communicate with the cavity 136 respectively. The first through hole 131 and the second through hole 132 are respectively used to connect an external pipe 137 (liquid inlet and outlet pipe).

[0047] Optionally, the main body 133 includes a first large surface 141, a second large surface 142, and a side surface 143 connecting the first large surface 141 and the second large surface 142; the first large surface 141 and the second large surface 142 are arranged oppositely. The mounting portion 134 protrudes from the first large surface 141. The first through hole 131 and the second through hole 132 are formed on the second large surface 142. There are two cavities 136 in the main body 133. One cavity 136 communicates with the first through hole 131. The other cavity 136 is used to communicate with the second through hole 132. There are two jacks 135 on the mounting portion 134, which are respectively inserted and matched with the two mounting bumps 125. The shape and size of the jack 135 on the mounting portion 134 are adapted to the shape and size of the mounting bump 125. In this embodiment, the cross section of the mounting bump 125 is in a round-headed rectangular shape. Correspondingly, the jack 135 on the mounting portion 134 is also in a round-headed rectangular shape.

[0048] The cavity 136 has an opening on the side surface 143 of the main body 133, and a blocking piece 145 is provided at the opening. The blocking piece 145 is used to seal the cavity 136 to prevent the heat exchange medium entering the cavity 136 from the first through hole 131 from leaking, and to prevent the heat exchange medium flowing from the cavity 136 to the second through hole 132 from leaking. The blocking piece 145 can be made of an aluminum block, and the blocking piece 145 is welded to the main body 133 of the cross beam 130 to seal the opening. The external pipe 137 communicates with the inlet 121 and the outlet 122 of the flow channel 111 through the internal cavity 136 of the cross beam 130, which is convenient for the connection and installation of the external pipe 137 and is beneficial to improving the sealing performance.

[0049] Combined Figure 10 and Figure 11, in this embodiment, two mounting bumps 125 are provided on the first plug strip, and an inlet 121 and an outlet 122 are respectively provided on the mounting bumps 125. Corresponding jacks 135, cavities 136, first through holes 131 and second through holes 132 are provided on the cross beam 130 connected to the first plug strip. No mounting bumps 125 are provided on the second plug strip. Structures such as the jack 135, cavity 136, first through hole 131 and second through hole 132 are omitted on the cross beam 130 connected to the second plug strip. The end face of the connecting portion 124 of the second plug strip and the end face of the mounting portion 134 of the cross beam 130 are directly welded.

[0050] Optionally, a relief groove 146 is formed in the main body 133 of the cross beam 130. The relief groove 146 is located at one end of the cross beam 130 close to the bottom plate 110 and in the middle of the cross beam 130. There are two relief grooves 146 for avoiding the high-voltage and low-voltage interfaces of the lower module after installation.

[0051] Optionally, a mounting through hole 147 is further provided on the cross beam 130. The mounting through hole 147 penetrates the main body 133 of the cross beam 130 along the height direction. The mounting through hole 147 is used for a long screw to pass through and connect with the cross beam 130 or the box body of the lower module, so as to realize the fixed connection between the upper module and the lower module.

[0052] The embodiment of the present utility model further provides a battery pack, which includes the aforementioned mounting bracket 100 and at least two layers of battery cell modules, and the upper battery cell module is installed on the bottom plate 110. While supporting and bearing the upper battery cell module, the bottom plate 110 can also realize heat exchange of the upper battery cell module, ensuring that the upper battery cell module works within a reasonable temperature range. The overall structure is compact, with high structural strength, high heat exchange efficiency, convenient installation and disassembly, fewer parts, high installation and disassembly efficiency, and easy to achieve lightweight design.

[0053] The embodiment of the present utility model further provides an electrical device, which includes a device body and the aforementioned battery pack. The device body and the battery pack are electrically connected. The battery pack is used to supply power to the device body. Among them, the electrical device can be in various forms. For example, mobile phones, portable devices, laptop computers, battery cars, electric vehicles, ships, spacecrafts, electric toys, electric tools or various household appliances, etc. For example, spacecrafts include airplanes, rockets, space shuttles and spaceships, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric vehicle toys, electric ship toys and electric airplane toys, etc. Electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact electric drills, concrete vibrators and electric planers, etc.

[0054] In summary, the mounting bracket 100, battery pack and electrical device provided by the embodiment of the present utility model have the following beneficial effects:

[0055] The mounting bracket 100 provided by the embodiment of the present utility model is provided with a flow channel 111 on the bottom plate 110, integrates the bottom plate 110 and the heat exchange plate into one body, and ingeniously connects the bottom plate 110 and the cross beam 130 through a plug strip 120 to realize the inlet and outlet of the heat exchange medium, which is convenient for installation, has a compact structure, high structural strength, good connection sealing performance, high heat exchange efficiency, improves the space utilization rate of the battery pack, and is beneficial to reducing the overall weight.

[0056] The battery pack and the electrical device provided by the embodiment of the present utility model include the above-mentioned mounting bracket 100 and the bottom plate 110 for mounting the upper battery cell module, which not only plays a role in supporting and carrying, but also can play a role in heat exchange. The structure is compact, which is beneficial to improving the space utilization rate and reducing the overall weight.

[0057] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A mounting bracket, characterized in that: include: A bottom plate (110), wherein a flow channel (111) is provided in the bottom plate (110); the bottom plate (110) is used for installing a battery cell module; A plug strip (120), the plug strip (120) being sealed and connected to both ends of the bottom plate (110); the plug strip (120) being provided with an inlet (121) and an outlet (122) communicating with the flow channel (111); A crossbeam (130), the crossbeam (130) being connected to the plug strip (120); a first through hole (131) and a second through hole (132) being provided on the crossbeam (130), the first through hole (131) being connected to the inlet (121), and the second through hole (132) being connected to the outlet (122).

2. The mounting bracket according to claim 1, characterized in that: The plug strip (120) comprises a connected sealing portion (123) and a connecting portion (124); the sealing portion (123) extends into the bottom plate (110) to limit the flow direction of the flow channel (111); and the connecting portion (124) is connected to the crossbeam (130).

3. The mounting bracket according to claim 2, characterized in that: The plug strip (120) comprises a first plug strip and a second plug strip, wherein the first plug strip is arranged at one end of the bottom plate (110), and the second plug strip is arranged at the other end of the bottom plate (110); the first plug strip and the second plug strip respectively comprise the sealing portion (123) and the connecting portion (124); The first plug strip or the second plug strip is provided with two mounting protrusions (125); or, the first plug strip and the second plug strip are respectively provided with one mounting protrusion (125); The mounting protrusion (125) is located on a side of the connecting portion (124) away from the sealing portion (123); one of the mounting protrusions (125) is provided with an inlet (121) penetrating the sealing portion (123) and the connecting portion (124); the other mounting protrusion (125) is provided with an outlet (122) penetrating the sealing portion (123) and the connecting portion (124); the mounting protrusion (125) is connected to the crossbeam (130).

4. The mounting bracket according to claim 3, characterized in that: The crossbeam (130) comprises a main body (133) and a mounting portion (134) arranged on one side of the main body (133), and the mounting portion (134) is connected to the mounting protrusion (125).

5. The mounting bracket according to claim 4, characterized in that: The mounting portion (134) is provided with a socket (135) pluggably matched with the mounting protrusion (125); the main body (133) is provided with a cavity (136) connected with the inlet (121) and the outlet (122); the first through hole (131) and the second through hole (132) are provided on a side of the main body (133) away from the mounting portion (134); the first through hole (131) and the second through hole (132) are respectively connected with the cavity (136); the first through hole (131) and the second through hole (132) are respectively used for connecting to an external pipe (137).

6. The mounting bracket according to claim 5, characterized in that: The main body (133) comprises a first large surface (141), a second large surface (142) and a side surface (143) connecting the first large surface (141) and the second large surface (142); the first large surface (141) is provided with the mounting portion (134); the cavity (136) has an opening on the side surface (143) of the main body (133), and a blocking piece (145) is provided at the opening.

7. The mounting bracket according to claim 4, characterized in that: The main body (133) is provided with a clearance groove (146).

8. The mounting bracket according to any one of claims 1 to 7, characterized in that: A plurality of partition ribs (113) are arranged in the bottom plate (110), and the flow channel (111) is formed between adjacent partition ribs (113); part of the partition ribs (113) is in contact with the plugging strip (120), and a gap exists between another part of the partition ribs (113) and the plugging strip (120).

9. A battery pack, characterized in that: It comprises a mounting bracket as claimed in any one of claims 1 to 8 and at least two layers of battery cell modules, wherein the upper layer of the battery cell modules is mounted on the bottom plate (110).

10. An electrical device, characterized in that: It comprises a device body and a battery pack as claimed in claim 9.

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