CN220021307U

CN220021307U - Heat exchanger of battery pack, battery pack and electricity utilization device

Info

Publication number: CN220021307U
Application number: CN202320784145.XU
Authority: CN
Inventors: 谢一鸣; 聂成明; 翟剑; 余沛文; 谭晶
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2023-03-31
Filing date: 2023-03-31
Publication date: 2023-11-14
Anticipated expiration: 2033-03-31

Abstract

The utility model discloses a heat exchanger of a battery pack, the battery pack and an electricity utilization device, wherein the heat exchanger comprises: the heat exchange device comprises a first collecting pipe, a heat exchange pipe and a second collecting pipe, wherein the first collecting pipe and the second collecting pipe are opposite and are spaced, one of the first collecting pipe and the second collecting pipe is provided with a medium inlet, the other of the first collecting pipe and the second collecting pipe is provided with a medium outlet, the heat exchange pipe is connected between the first collecting pipe and the second collecting pipe to be communicated with the first collecting pipe and the second collecting pipe, and the first collecting pipe and the second collecting pipe are both suitable for being spaced from adjacent battery packs so as to avoid heat exchange between the first collecting pipe and the corresponding battery pack and between the second collecting pipe and the corresponding battery pack. Therefore, according to the heat exchanger disclosed by the utility model, the heat exchange uniformity of the heat exchanger is improved, the heat exchange effect of the heat exchanger is improved, so that the temperature of the battery pack is kept at a proper working temperature, the temperature of the battery pack is uniform, and the risk of failure of the battery pack is reduced.

Description

Heat exchanger of battery pack, battery pack and electricity utilization device

Technical Field

The utility model relates to the field of batteries, in particular to a heat exchanger of a battery pack, the battery pack and an electric device.

Background

In the related art, the heat exchange uniformity of the existing heat exchanger is poor, so that uniform heat exchange cannot be performed on a plurality of battery monomers in the battery pack, the temperature uniformity of the plurality of battery monomers in the battery pack cannot be guaranteed, and the risk of failure of the battery pack is increased.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present utility model is to provide a heat exchanger of a battery pack, which is beneficial to improving heat exchange uniformity of the heat exchanger, so as to make the temperature of a battery pack uniform.

The utility model further provides a battery pack.

The utility model further provides an electric device.

The heat exchanger of the battery pack provided by the utility model comprises:

the heat exchanger comprises a first collecting pipe, a heat exchange pipe and a second collecting pipe, wherein the first collecting pipe and the second collecting pipe are opposite and are spaced, one of the first collecting pipe and the second collecting pipe is provided with a medium inlet, the other of the first collecting pipe and the second collecting pipe is provided with a medium outlet, the heat exchange pipe is connected between the first collecting pipe and the second collecting pipe so as to be communicated with the first collecting pipe and the second collecting pipe, and the first collecting pipe and the second collecting pipe are suitable for being spaced from an adjacent battery pack so as to form a heat insulation part between the first collecting pipe and the corresponding battery pack and between the second collecting pipe and the corresponding battery pack.

According to the heat exchanger of the battery pack, which is provided by the utility model, the heat exchange uniformity of the heat exchanger is improved, and the heat exchange effect of the heat exchanger is improved, so that the temperature of the battery pack is kept at a proper working temperature, the temperature of the battery pack is uniform, and the risk of failure of the battery pack is reduced.

In some examples of the present utility model, the outer peripheral wall of the heat exchange tube is formed with a plurality of heat exchange surfaces, at least one of which exchanges heat with the battery pack on one side of the heat exchanger, and at least one of which exchanges heat with the battery pack on the other side of the heat exchanger.

In some examples of the present utility model, the outer peripheral wall of the heat exchange tube is formed with three heat exchange surfaces, one of the three heat exchange surfaces exchanges heat with the battery pack on one side of the heat exchanger, and the other two of the three heat exchange surfaces exchanges heat with the battery pack on the other side.

In some examples of the utility model, the heat exchange surface is configured as an arcuate surface recessed into the heat exchange tube.

In some examples of the utility model, the shape of the heat exchange surface is adapted to the shape of the contact surface of the cells of the battery pack.

In some examples of the present utility model, the heat exchange tubes are a plurality of, and the plurality of heat exchange tubes are arranged along the length direction of the heat exchanger.

In some examples of the utility model, a plurality of the heat exchange tubes are spaced apart in sequence along the length of the heat exchanger, and adjacent heat exchange tubes are staggered along the width of the heat exchanger.

In some examples of the present utility model, a plurality of the heat exchange tubes are arranged in a length direction of the heat exchanger to form an assembly space for assembling the battery cells of the battery pack on both one side and the other side of the heat exchanger.

In some examples of the utility model, the medium inlet and the medium outlet are located at the same end of the heat exchanger along the length of the heat exchanger.

In some examples of the utility model, the medium inlet and the medium outlet are located at two ends of the heat exchanger, respectively, along the length of the heat exchanger.

In some examples of the utility model, the heat exchange tube is configured to be disposed between two adjacent battery packs in the battery pack to exchange heat with the adjacent battery packs.

In some examples of the utility model, the first and second manifolds are identical in structure.

In some examples of the present utility model, the first collecting pipe and the second collecting pipe each have a first pipe section and a plurality of second pipe sections, the plurality of second pipe sections are sequentially arranged along the length direction of the heat exchanger, the first pipe sections are connected between two adjacent second pipe sections, and an included angle is formed between the first pipe sections and the adjacent second pipe sections.

In some examples of the utility model, the first and second manifolds are each straight tubes.

The battery pack according to the present utility model includes:

the battery packs are sequentially arranged along the first direction of the battery pack;

the heat exchanger is arranged between two adjacent battery packs to exchange heat with the battery packs, and comprises the heat exchanger of the battery pack.

In some examples of the utility model, the battery pack further includes a mounting bracket including a first bracket disposed between the first manifold and the battery pack and a second bracket disposed between the second manifold and the battery pack.

According to the power utilization device provided by the utility model, the power utilization device comprises the battery pack.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a perspective view of a battery pack according to an embodiment of the present utility model;

fig. 2 is an exploded view of a battery pack according to an embodiment of the present utility model;

FIG. 3 is a schematic view of an assembly of a heat exchanger, battery pack, mounting bracket according to an embodiment of the utility model;

FIG. 4 is an assembled cross-sectional view of a heat exchanger, battery pack, mounting bracket according to an embodiment of the utility model;

FIG. 5 is a schematic perspective view of a heat exchanger according to an embodiment of the utility model;

FIG. 6 is a cross-sectional view of a heat exchanger according to an embodiment of the utility model;

fig. 7 is a front view of a heat exchanger according to a first embodiment of the present utility model;

fig. 8 is a front view of a heat exchanger according to a second embodiment of the present utility model.

Reference numerals:

a battery pack 1000;

a heat exchanger 100;

a first manifold 1; a heat exchange tube 2; a heat exchange surface 201; a second manifold 3; a medium inlet 4; a medium outlet 5;

an assembly space 6; an avoidance space 7; a first pipe section 11; a second pipe section 12;

a battery pack 200; a battery cell 10; a case 20; an upper cover 21; a tray 22; a mounting space 23;

a communicating tube 300; a liquid outlet pipe 31; a liquid inlet pipe 32;

a mounting bracket 400; a first bracket 41; a second bracket 42.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

The heat exchanger 100 of the battery pack 1000 according to the embodiment of the present utility model will be described with reference to fig. 1 to 8, and the heat exchanger 100 may be applied to the battery pack 1000, but the present utility model is not limited thereto, and the heat exchanger 100 may be applied to other devices where the heat exchanger 100 needs to be disposed, and the present utility model will be described by taking the application of the heat exchanger 100 to the battery pack 1000 as an example.

According to the heat exchanger 100 of the embodiment of the present utility model, the heat exchanger 100 includes a first manifold 1, a heat exchange tube 2, and a second manifold 3, the first manifold 1 and the second manifold 3 being opposite to and spaced apart from each other, one of the first manifold 1 and the second manifold 3 being provided with a medium inlet 4, the other of the first manifold 1 and the second manifold 3 being provided with a medium outlet 5, the heat exchange tube 2 being connected between the first manifold 1 and the second manifold 3 to communicate the first manifold 1 and the second manifold 3, the first manifold 1 and the second manifold 3 each being adapted to be spaced apart from an adjacent battery pack 200 to form a heat insulation between the first manifold 1 and the corresponding battery pack 200 and between the second manifold 3 and the corresponding battery pack 200. The first direction is the Y direction shown in fig. 2.

In some embodiments, as shown in fig. 1 and 2, the case 20 of the battery pack 1000 includes an upper cover 21 and a tray 22. The tray 22 defines a mounting space 23 for accommodating a plurality of battery packs 200, and the upper cover 21 is used to cover an open end of the mounting space 23 such that the upper cover 21 and the tray 22 are fixedly coupled to form the case 20. As shown in fig. 2, a plurality of battery packs 200 are disposed in the battery pack 1000, the plurality of battery packs 200 are sequentially disposed along a first direction, and a heat exchanger 100 is disposed between two adjacent battery packs 200, and the heat exchanger 100 exchanges heat with the battery packs 200 disposed on two sides of the heat exchanger 100, so that the heat exchange effect between the heat exchanger 100 and the plurality of battery packs 200 is achieved, and the temperatures of the plurality of battery packs 200 are kept at suitable working temperatures, so that the temperatures of the battery packs 200 are uniform, and the risk of failure of the battery pack 1000 is reduced.

In some embodiments, by providing one of the first and second manifolds 1 and 3 with the medium inlet 4, the other of the first and second manifolds 1 and 3 is provided with the medium outlet 5, and the heat exchange tube 2 communicates with the first and second manifolds 1 and 3, so that during the flow of the medium (e.g., water, cooling liquid, etc.), the medium flows into one of the first and second manifolds 1 and 3 from the medium inlet 4, then flows into the other of the first and second manifolds 1 and 3 through the heat exchange tube 2, and the medium is discharged from the manifold (the first or second manifold 1 or 3) provided with the medium outlet 5, thereby preventing the risk of medium backflow during the medium flowing through the heat exchanger 100, further improving the heat exchange uniformity of the heat exchanger 100, facilitating the improvement of the heat exchange effect of the heat exchanger 100, further realizing the temperature of the battery pack 200 to be a suitable operating temperature effect, and further reducing the risk of failure of the battery pack 1000. As shown in fig. 7 and 8, the present utility model is described by taking the example that the first manifold 1 is provided with a medium inlet 4 and the second manifold 3 is provided with a medium outlet 5.

In some embodiments, when the battery pack 200 is fixedly matched with the heat exchanger 100, the adjacent battery packs 200 of the first collecting pipe 1 and the second collecting pipe 3 are spaced to form heat insulation parts between the first collecting pipe 1 and the corresponding battery pack 200 and between the second collecting pipe 2 and the corresponding battery pack 200, namely, the heat insulation parts prevent the first collecting pipe 1 and the second collecting pipe 3 from exchanging heat with the battery pack 200, so that the contact heat exchange between the first collecting pipe 1 and the corresponding battery pack 200 is avoided or slowed down, and the contact heat exchange between the second collecting pipe 3 and the corresponding battery pack 200 is avoided. Further, a gap may exist between the battery pack 200 and the first collecting pipe 1 and the second collecting pipe 3, the gap is a heat insulation part, or a heat insulation material is disposed between the battery pack 200 and the first collecting pipe 1 and the second collecting pipe 3, the heat insulation material is a heat insulation part, or a spacer with a certain thickness is disposed between the battery pack 200 and the first collecting pipe 1 and the second collecting pipe 3, the spacer with a certain thickness is a heat insulation part, although the spacer has a certain heat conduction capacity, the heat conduction capacity of the spacer is reduced due to the increase of the thickness, so as to slow down the heat exchange between the collecting pipe and the battery, the specific thickness of the spacer can be modified according to the actual situation, so that the battery pack 200 and the first collecting pipe 1 and the second collecting pipe 3 do not exchange heat or slow down the heat exchange effect, and the battery pack 200 only exchanges heat with the heat exchange pipe 2 of the heat exchanger 100, thereby preventing or reducing the influence of the heat generated by the battery pack 200 on the medium in the first collecting pipe 1 and the second collecting pipe 3, further improving the heat uniformity of the heat exchanger 100, further improving the heat exchange efficiency of the heat exchanger 100, and further keeping the heat exchange efficiency of the battery pack 1000 at a proper risk.

In some embodiments, as shown in fig. 3, when the heat exchanger 100 is placed in the direction of fig. 3, in the height direction of the heat exchanger 100 (i.e., the Z direction shown in fig. 3), the first collecting pipe 1 and the second collecting pipe 3 are opposite and spaced, and the heat exchange pipe 2 is vertically disposed between the first collecting pipe 1 and the second collecting pipe 3, so as to achieve the effect that the medium flows along the heat exchange pipe 2 from top to bottom or from bottom to top, and further ensure that the temperature difference between the top and bottom of all the battery cells 10 is smaller, and the temperature of the battery cells 10 is more uniform. Therefore, according to the heat exchanger 100 of the embodiment of the utility model, the heat exchange uniformity of the heat exchanger 100 is improved, and the heat exchange effect of the heat exchanger 100 is improved, so that the temperature of the battery pack 200 is kept at a proper working temperature effect, the temperature of the battery pack 200 is uniform, and the risk of failure of the battery pack 1000 is reduced.

In some embodiments of the present utility model, as shown in fig. 2 and 3, the battery pack 1000 may further include a mounting bracket 400, which is a heat insulating portion. The mounting bracket includes a first bracket 41 and a second bracket 42, the first bracket 41 being disposed between the first manifold 1 and the battery pack 200, and the second bracket 42 being disposed between the second manifold 3 and the battery pack 200. Preferably, the first bracket 41 and the second bracket 42 are made of heat insulating material or heat blocking material. Such as mica, glass fiber, etc. Alternatively, the first support 41 and the second support 42 may also use a spacer with a certain thickness, so as to slow down the heat exchange rate between the collecting pipe and the battery, and further reduce the temperature difference between the heat exchange medium in the collecting pipe and each heat exchange pipe. As shown in fig. 3, when the battery pack 1000 is placed in the direction of fig. 3, the first and second brackets 41 and 42 are fixedly assembled to both ends of the battery cell 10, respectively, in the height direction of the battery cell 10 (i.e., the Z direction shown in fig. 3), thereby achieving the effect of fixedly assembling the battery cell 10 to the mounting bracket 400, and the mounting bracket 400 can be fixedly assembled with at least one battery cell 10, so that the battery pack 200 can be fixedly assembled to the mounting bracket 400. In addition, the mounting bracket 400 is suitable for being matched with the heat exchanger 100, as shown in fig. 3, the first bracket 41 of the mounting bracket 400 is suitable for being matched with the first collecting pipe 1, and the second bracket 42 is suitable for being matched with the second collecting pipe 3, so that when the battery pack 200 is fixedly assembled on the mounting bracket 400, the mounting bracket 400 can prevent the battery pack 200 from exchanging heat with the first collecting pipe 1 and the second collecting pipe 3, so that the battery pack 200 only exchanges heat with the heat exchange pipe 2 of the heat exchanger 100, the heat generated by the battery pack 200 is prevented from affecting the medium in the first collecting pipe 1 and the second collecting pipe 3, the temperature difference of the medium in the heat exchange pipe 2 is reduced, the heat exchange uniformity of the heat exchanger 100 is further improved, the heat exchange effect of the heat exchanger 100 is further improved, the temperature of the battery pack 200 is kept at a proper working temperature, and the risk of failure of the battery pack 1000 is reduced.

Further, the second bracket 42 may be fixed to the tray 22, and the second bracket 42 may be fixedly mounted to the upper surface of the tray 22 by means of adhesion or the like, that is, the second bracket 42 is fixedly mounted in the mounting space 23, thereby achieving the effect of fixedly mounting the battery pack 200 in the mounting space 23 by providing the mounting bracket 400.

In some embodiments of the present utility model, as shown in fig. 4 and 6, the outer circumferential wall of the heat exchange tube 2 is formed with a plurality of heat exchange surfaces 201, at least one of the plurality of heat exchange surfaces 201 exchanges heat with the battery pack 200 on one side of the heat exchanger 100, and at least one of the plurality of heat exchange surfaces 201 exchanges heat with the battery pack 200 on the other side of the heat exchanger 100. Further, as shown in fig. 4, when the heat exchanger 100 is disposed between two adjacent battery packs 200, the plurality of heat exchange surfaces 201 of the heat exchange tube 2 are respectively attached to the corresponding battery packs 200, so that the heat exchanger 100 exchanges heat with the battery packs 200 disposed on both sides of the heat exchanger 100, and an effect of heat exchange between the heat exchanger 100 and the plurality of battery packs 200 is achieved, so that temperatures of the plurality of battery packs 200 are kept at appropriate working temperatures, and a risk of failure of the battery pack 1000 is reduced.

In addition, as the heat exchange tube 2 is provided with the plurality of heat exchange surfaces 201, the reserved space between two adjacent battery packs 200 can be effectively matched, the heat exchange effect is further improved, the space utilization rate of the battery pack is improved, the whole structure of the battery pack is more compact, and the strength and the stability are improved.

Further, the heat exchange surface 201 may be provided with a heat exchange medium, for example, the heat exchange medium is configured as a heat conducting glue, and the heat conducting glue has good heat conductivity and good adhesion, so that by arranging the heat conducting glue on the heat exchange surface 201, the effect of adhering the battery pack 200 to the heat exchange tube 2 is achieved, the heat conducting performance between the battery pack 200 and the heat exchange tube 2 is improved, the effect that the temperature of the battery pack 200 is kept at a proper working temperature is achieved, and the risk of failure of the battery pack 1000 is reduced.

In some embodiments of the present utility model, as shown in fig. 4 and 6, the outer circumferential wall of the heat exchange tube 2 is formed with three heat exchange surfaces 201, one of the three heat exchange surfaces 201 exchanges heat with the battery pack 200 on one side of the heat exchanger 100, and the other two heat exchange surfaces 201 of the three heat exchange surfaces 201 exchange heat with the battery pack 200 on the other side. Further, the heat exchange tube 2 may be configured as a tubular column structure with a triangular prism shape, so that three heat exchange surfaces 201 are formed on the outer peripheral wall of the heat exchange tube 2, and when the heat exchange tube 2 is fixedly matched with two adjacent battery packs 200, one heat exchange surface 201 of the three heat exchange surfaces 201 exchanges heat with one battery pack 200, and the other two heat exchange surfaces 201 of the three heat exchange surfaces 201 exchange heat with the other battery pack 200, so that the heat exchanger 100 exchanges heat with the battery packs 200 arranged on two sides of the heat exchanger 100, and the heat exchange effect of the heat exchanger 100 and the plurality of battery packs 200 is achieved, so that the temperatures of the plurality of battery packs 200 are kept at proper working temperatures, and the risk of failure of the battery pack 1000 is reduced. It should be noted that the configuration of the heat exchange tube 2 having three heat exchange surfaces 201 is applicable to a configuration of a cylinder

In some embodiments of the present utility model, as shown in fig. 4, the shape of the heat exchange surface 201 is adapted to the shape of the contact surface of the battery cells 10 of the battery pack 200. Further, the battery cell 10 may be configured into a cylindrical shape, such as a cylinder, a prism (e.g., a triangular prism, a quadrangular prism, or a pentagonal prism), etc., and the shape of the heat exchange surface 201 is adapted to the outer surface of the battery cell 10, so that when the battery cell 10 is fixedly assembled to the heat exchanger 100, the contact area between the battery cell 10 and the heat exchange surface 201 is advantageously increased, the heat exchange efficiency between the battery cell 10 and the heat exchanger 100 is improved, the heat exchange effect between the heat exchanger 100 and the battery pack 200 is improved, so that the temperature of the battery pack 200 is kept at a suitable working temperature, and the risk of failure of the battery pack 1000 is reduced. As shown in fig. 4, the present utility model is described by taking an example in which the battery cells 10 of the battery pack 200 are configured in a cylindrical shape, and the present utility model is not limited thereto. Also, the shape adaptation of the battery cells 10 and the heat exchange surfaces 201 with other shapes has the technical effects described above, because the heat exchanger 100 is provided with a plurality of heat exchange surfaces 201, the reserved space between two adjacent battery cells 10 can be effectively matched, the heat exchange effect is further improved, the space utilization rate of the battery pack 1000 is improved, the overall structure of the battery pack 1000 is more compact, and the strength and the stability are improved.

In some embodiments of the present utility model, as shown in fig. 4, the heat exchange surface 201 is configured as an arcuate surface recessed toward the inside of the heat exchange tube 2. Further, as shown in fig. 4 and 6, the cross section of the heat exchange tube 2 is approximately triangular, three heat exchange surfaces 201 connected in sequence are connected to form the outer peripheral wall of the heat exchange tube 2, the three heat exchange surfaces 201 are all recessed toward the inside of the heat exchange tube 2, and the three heat exchange surfaces 201 are all configured as arc surfaces, so that the heat exchange surfaces 201 are suitable for being matched with the battery cells 10 configured as cylinders, the effect that the battery cells 10 are fixedly assembled on the heat exchange tube 2 is achieved, and the heat exchange tube 2 is provided with the three heat exchange surfaces 201, the effect that a single heat exchange tube 2 exchanges heat with three battery cells 10 is achieved, and the effect that the single heat exchange tube 2 exchanges heat with a plurality of battery cells 10 is achieved.

In some embodiments of the present utility model, as shown in fig. 4 and 6, the heat exchange tubes 2 are plural, and the plural heat exchange tubes 2 are arranged along the length direction of the heat exchanger 100. As shown in fig. 6, when the heat exchanger 100 is placed in the direction of fig. 6, the length direction of the heat exchanger 100 is the X direction shown in fig. 6, the plurality of heat exchange tubes 2 are sequentially arranged along the length direction of the heat exchanger 100, two adjacent heat exchange tubes 2 may be connected and two adjacent heat exchange tubes 2 may be sequentially arranged at intervals, as shown in fig. 6, the present utility model is illustrated by taking two adjacent heat exchange tubes 2 sequentially arranged at intervals as an example, and the plurality of heat exchange tubes 2 are suitable for being matched with the plurality of battery cells 10. Thus, by providing the plurality of heat exchange tubes 2 on the single heat exchanger 100, the single heat exchanger 100 can be matched with the plurality of battery cells 10, thereby realizing the effect of fixedly matching the heat exchanger 100 with the battery pack 200, and also realizing the effect of simultaneously exchanging heat between the single heat exchanger 100 and the plurality of battery cells 10.

In some embodiments of the present utility model, as shown in fig. 6, a plurality of heat exchange tubes 2 are sequentially spaced apart in the length direction of the heat exchanger 100, and adjacent heat exchange tubes 2 are staggered in the width direction of the heat exchanger 100. Further, as shown in fig. 6, when the heat exchanger 100 is placed in the direction shown in fig. 6, the length direction of the heat exchanger 100 is the X direction shown in fig. 6, the width direction of the heat exchanger 100 is the Y direction shown in fig. 6, and two adjacent heat exchange tubes 2 are staggered along the length direction and the width direction of the heat exchanger 100, so that an assembling space 6 for assembling the battery cell 10 is formed between the three adjacent heat exchange tubes 2, so that the heat exchanger 100 is matched with the arrangement of the battery cell 10, and the effect that the battery cell 10 can be fixedly assembled on both sides of the heat exchanger 100 is achieved.

In some embodiments of the present utility model, as shown in fig. 4 and 6, a plurality of heat exchange tubes 2 are arranged in the length direction of the heat exchanger 100 to form an assembly space 6 for assembling the battery cells 10 of the battery pack 200 on both one side and the other side of the heat exchanger 100. Further, the plurality of heat exchange tubes 2 together define a plurality of assembly spaces 6 for assembling the battery cells 10, and along the length direction of the heat exchanger 100, the plurality of assembly spaces 6 are sequentially arranged, and openings of two adjacent assembly spaces 6 are oppositely arranged in the width direction of the heat exchanger 100, so that the heat exchanger 100 is matched with the arrangement of the battery cells 10 in the width direction of the heat exchanger 100, the battery cells 10 can be fixedly assembled on two sides of the heat exchanger 100, thereby realizing the heat exchange effect of the heat exchanger 100 on the battery packs 200 arranged on two sides of the heat exchanger 100, realizing the effect of simultaneous heat exchange of the heat exchanger 100 and the plurality of battery packs 200, and keeping the temperature of the plurality of battery packs 200 at a proper working temperature, thereby reducing the risk of failure of the battery pack 1000.

In some embodiments of the present utility model, as shown in fig. 2, the battery pack 1000 may include a communication pipe 300, and the communication pipe 300 may have a liquid outlet pipe 31 and a liquid inlet pipe 32, one end of the liquid outlet pipe 31 being adapted to communicate with the medium outlet 5, one end of the liquid inlet pipe 32 being adapted to communicate with the medium inlet 4, and the other end of the liquid outlet pipe 31 and the other end of the liquid inlet pipe 32 being both in communication with a cooling device for cooling medium, thereby achieving the effect of medium circulation heat exchange. Specifically, during the medium circulation, the medium flows into the first collecting pipe 1 from the medium inlet 4, then flows into the heat exchange pipe 2 from the first collecting pipe 1, then flows into the second collecting pipe 3 from the medium in the heat exchange pipe 2, and then flows out of the second collecting pipe 3 from the medium outlet 5, at this time, the medium flows from the liquid outlet pipe 31 to the cooling device to cool the medium, and the medium cooled by the cooling device flows from the liquid inlet pipe 32 to the medium inlet 4 to flow the cooled medium to the first collecting pipe 1 again, thereby realizing the effect of medium circulation.

In some embodiments of the present utility model, as shown in fig. 7, the medium inlet 4 and the medium outlet 5 are located at the same end of the heat exchanger 100 along the length direction of the heat exchanger 100. By providing the medium inlet 4 and the medium outlet 5 at the same end of the heat exchanger 100, it is advantageous to reduce the length of the communication tube 300 and thus the manufacturing cost of the communication tube 300. The arrows shown in fig. 7 indicate the flow direction of the medium in the heat exchanger 100.

In some embodiments of the present utility model, as shown in fig. 8, along the length direction of the heat exchanger 100, the medium inlet 4 and the medium outlet 5 are respectively located at two ends of the heat exchanger 100, so that the path distances of the medium flowing through different heat exchange tubes 2 are the same, thereby further improving the heat exchange uniformity of the heat exchanger 100, further improving the heat exchange effect of the heat exchanger 100, realizing the effect that the temperature of the battery pack 200 is kept at a proper working temperature, and reducing the risk of failure of the battery pack 1000. The arrows shown in fig. 8 indicate the flow direction of the medium in the heat exchanger 100.

In some embodiments of the present utility model, as shown in fig. 2, the heat exchange tube 2 is used to be disposed between two adjacent battery packs 200 in the battery pack 1000 to exchange heat with the adjacent battery packs 200, so as to achieve the effect of heat exchange of the heat exchanger 100 on the battery packs 200 disposed at both sides of the heat exchanger 100.

Further, along the width direction of the heat exchanger 100, the two sides of the heat exchanger 100 may be provided with the battery packs 200, and the battery packs 200 are adapted to be assembled to the heat exchanger 100, so that when two adjacent battery packs 200 are assembled to the heat exchanger 100, the two adjacent battery packs 200 are adapted to be attached to the heat exchange tube 2, so that the heat exchange tube 2 is adapted to exchange heat with the two adjacent battery packs 200, thereby realizing the effect of the heat exchanger 100 on heat exchange of the battery packs 200 disposed on two sides of the heat exchanger 100. In some embodiments of the present utility model, as shown in fig. 7, the first collecting pipe 1 and the second collecting pipe 3 have the same structure, so that the cost of design development and production of the first collecting pipe 1 and the second collecting pipe 3 is reduced, and the effect of reducing the cost of the heat exchanger 100 is achieved.

In some embodiments of the present utility model, as shown in fig. 5, each of the first collecting pipe 1 and the second collecting pipe 3 has a first pipe section 11 and a plurality of second pipe sections 12, the plurality of second pipe sections 12 are sequentially arranged along the length direction of the heat exchanger 100, and the first pipe sections 11 are connected between two adjacent second pipe sections 12, and an included angle is formed between the first pipe sections 11 and the adjacent second pipe sections 12.

Further, as shown in fig. 5, in the present utility model, the first collecting pipe 1 and the second collecting pipe 3 each have a plurality of first pipe sections 11 and a plurality of second pipe sections 12, where two adjacent first pipe sections 11 are parallel to each other, two adjacent second pipe sections 12 are parallel to each other, the plurality of first pipe sections 11 and the plurality of second pipe sections 12 are sequentially connected to form the first collecting pipe 1 or the second collecting pipe 3, and the heat exchange pipe 2 can be connected to a connection position between the first pipe sections 11 and the second pipe sections 12, so as to achieve the effect of communication among the first collecting pipe 1, the heat exchange pipe 2 and the second collecting pipe 3.

Moreover, the included angle formed between the first pipe section 11 and the adjacent second pipe section 12 may be an obtuse angle, a right angle or an acute angle, so that the first collecting pipe 1 and the second collecting pipe 3 may be in a zigzag shape, a wavy shape or a linear shape, and the like, thereby realizing the staggered effect of the two adjacent heat exchange pipes 2 along the length direction and the width direction of the heat exchanger 100, matching the arrangement of the battery cells 10, and realizing the effect of fixedly assembling the battery cells 10 on both sides of the heat exchanger 100. Preferably, the angle formed between the first tube section 11 and the adjacent second tube section 12 may be an obtuse angle.

Through setting up the contained angle that forms between first pipeline section 11 and the second pipeline section 12 that adjoins to form between first pipeline section 11 and the second pipeline section 12 that adjoins and dodge space 7, so that when battery monomer 10 fixed assembly in heat exchanger 100, dodge space 7 can dodge battery monomer 10's utmost point post and explosion-proof valve, thereby guarantee battery monomer 10 normal use.

In some embodiments of the present utility model, the first collecting pipe 1 and the second collecting pipe 3 are straight pipes, and it is also understood that the first collecting pipe 1 and the second collecting pipe 3 are arranged along the length direction of the heat exchanger 100, so that the first collecting pipe 1 and the second collecting pipe 3 have simple structures, which is beneficial to reducing the production difficulty of the first collecting pipe 1 and the second collecting pipe 3 and improving the production efficiency of the first collecting pipe 1 and the second collecting pipe 3. The battery pack 1000 according to the embodiment of the present utility model includes a plurality of battery packs 200 and a heat exchanger 100.

The plurality of battery packs 200 are sequentially arranged in the first direction of the battery pack 1000. The heat exchanger 100 is provided between two adjacent battery packs 200 to exchange heat with the battery packs 200, and the heat exchanger 100 includes the heat exchanger 100 of the battery pack 1000 of the above embodiment.

Further, as shown in fig. 1 and 2, the heat exchanger 100 is disposed inside the battery pack 1000, i.e., the heat exchanger 100 is located in the installation space 23. Also, the battery pack 1000 may further include a mounting bracket 400 including a first bracket 41 and a second bracket 42, as shown in fig. 3, and when the battery pack 1000 is placed in the direction of fig. 3, the first bracket 41 and the second bracket 42 are fixedly assembled to both ends of the battery cell 10, respectively, in the height direction of the battery cell 10 (i.e., the Z direction shown in fig. 3), thereby achieving the effect of fixedly assembling the battery cell 10 to the mounting bracket 400. And, as shown in fig. 3, the first bracket 41 of the mounting bracket 400 is suitable for being matched with the first collecting pipe 1, and the second bracket 42 is suitable for being matched with the second collecting pipe 3, so that the mounting bracket 400 can avoid the battery pack 200 from being in direct contact with the first collecting pipe 1 and the second collecting pipe 3, the effect that the first collecting pipe 1 and the second collecting pipe 3 are separated from the battery cell 10 is realized, the heat generated by the battery pack 200 is prevented from affecting the medium in the first collecting pipe 1 and the second collecting pipe 3, and the temperature difference of the medium in the heat exchange pipe 2 is reduced, the temperature of the battery pack 200 is kept at a proper working temperature, and the risk of failure of the battery pack 1000 is reduced.

The power consumption device according to the embodiment of the present utility model includes the battery pack 1000 of the above embodiment.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A heat exchanger for a battery pack, the heat exchanger comprising:

2. The heat exchanger of a battery pack according to claim 1, wherein the outer peripheral wall of the heat exchange tube is formed with a plurality of heat exchange surfaces, at least one of which exchanges heat with the battery pack on one side of the heat exchanger, and at least one of which exchanges heat with the battery pack on the other side of the heat exchanger.

3. The heat exchanger of a battery pack according to claim 2, wherein the outer peripheral wall of the heat exchange tube is formed with three heat exchange surfaces, one of the three heat exchange surfaces exchanges heat with the battery pack on one side of the heat exchanger, and the other two of the three heat exchange surfaces exchanges heat with the battery pack on the other side.

4. The heat exchanger of a battery pack as claimed in claim 2, wherein the heat exchanging surface is configured as an arc surface recessed toward the inside of the heat exchanging pipe.

5. The heat exchanger of a battery pack according to claim 2, wherein the shape of the heat exchange surface is adapted to the shape of the contact surface of the battery cells of the battery pack.

6. The heat exchanger of the battery pack according to claim 1, wherein the heat exchange tubes are plural, and the plural heat exchange tubes are arranged in a length direction of the heat exchanger.

7. The heat exchanger of a battery pack according to claim 6, wherein a plurality of the heat exchange tubes are sequentially spaced apart in a length direction of the heat exchanger, and adjacent heat exchange tubes are staggered in a width direction of the heat exchanger.

8. The heat exchanger of the battery pack according to claim 6, wherein a plurality of the heat exchange tubes are arranged in a length direction of the heat exchanger to form an assembly space for assembling the battery cells of the battery pack at both one side and the other side of the heat exchanger.

9. The heat exchanger of a battery pack according to claim 1, wherein the medium inlet and the medium outlet are located at the same end of the heat exchanger along a length direction of the heat exchanger.

10. The heat exchanger of a battery pack according to claim 1, wherein the medium inlet and the medium outlet are located at both ends of the heat exchanger, respectively, in a length direction of the heat exchanger.

11. The heat exchanger of a battery pack according to claim 1, wherein the heat exchange tube is provided between two adjacent battery packs in the battery pack to exchange heat with the adjacent battery packs.

12. The heat exchanger of a battery pack according to any one of claims 1 to 11, wherein the first and second manifolds are identical in structure.

13. The heat exchanger of a battery pack according to claim 1, wherein the first and second collecting pipes each have a first pipe section and a plurality of second pipe sections, the plurality of second pipe sections are sequentially arranged along the length direction of the heat exchanger, the first pipe sections are connected between two adjacent second pipe sections, and an included angle is formed between the first pipe sections and the adjacent second pipe sections.

14. The heat exchanger of a battery pack according to claim 1, wherein the first and second manifolds are each straight pipes.

15. A battery pack, comprising:

a heat exchanger provided between two adjacent battery packs to exchange heat with the battery packs, the heat exchanger being a heat exchanger of a battery pack according to any one of claims 1 to 14.

16. The battery pack of claim 15, further comprising a mounting bracket comprising a first bracket disposed between the first manifold and the battery pack and a second bracket disposed between the second manifold and the battery pack.

17. An electrical device comprising a battery pack according to claim 15 or 16.