Heat exchange device, battery pack and electric equipment

Abstract

The embodiment of the invention provides a heat exchange device, a battery pack and electric equipment, and relates to the technical field of energy storage. The heat exchange device comprises a first heat exchange piece and a second heat exchange piece, the first heat exchange piece comprises a first containing cavity, and the second heat exchange piece comprises a second containing cavity; the second heat exchange piece is connected with the first heat exchange piece and covers the first accommodating cavity; an accommodating cavity is defined by the second accommodating cavity and the first accommodating cavity; the first heat exchange part is used for being in contact with the bottom of the battery pack and exchanging heat, and the second heat exchange part is used for being in contact with the top of the battery pack and exchanging heat. According to the embodiment of the invention, the first heat exchange piece and the second heat exchange piece can be used as the upper shell and the lower shell of the battery pack to protect the battery pack, the heat exchange device does not need to be additionally mounted, the occupied space of the heat exchange device is reduced, and the battery pack is simple in assembly and high in space utilization rate.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a heat exchange device, a battery pack, and an electrical device. Background Art

[0002] A battery pack, a device that converts chemical energy into electrical energy, is widely used in new energy vehicles, energy storage power stations, and other fields. It typically consists of a housing and multiple batteries housed within it. These batteries generate significant heat during operation, necessitating a heat exchanger within the housing to dissipate the heat.

[0003] However, the current heat exchange device is difficult to install and occupies a large space, resulting in complex assembly of the battery pack and low space utilization. Summary of the Invention

[0004] In view of the above problems, embodiments of the present application provide a heat exchange device, a battery pack, and an electrical device, which can simplify the assembly of the battery pack and improve the space utilization of the battery pack.

[0005] In order to achieve the above objectives, the embodiments of the present application provide the following technical solutions:

[0006] A first aspect of an embodiment of the present application provides a heat exchange device, comprising a first heat exchange element and a second heat exchange element, wherein the first heat exchange element comprises a first accommodating chamber, and the second heat exchange element comprises a second accommodating chamber;

[0007] The second heat exchange member is connected to the first heat exchange member and covers the first accommodating cavity; wherein the second accommodating cavity and the first accommodating cavity enclose a accommodating cavity;

[0008] The accommodating cavity is used to accommodate the battery pack, the first heat exchange member is used to contact and exchange heat with the bottom of the battery pack, and the second heat exchange member is used to contact and exchange heat with the top of the battery pack.

[0009] In a possible implementation, a partial area of the first heat exchange element is recessed in a direction away from the second heat exchange element to form the first accommodating cavity;

[0010] A partial area of the second heat exchange element is recessed in a direction away from the first heat exchange element to form the second accommodating cavity;

[0011] The first accommodating cavity and the second accommodating cavity are opposite to each other.

[0012] In a possible implementation, the first heat exchange element and the second heat exchange element both include a temperature averaging plate and a flow channel plate that are stacked, and a heat exchange channel is formed between the flow channel plate and the temperature averaging plate.

[0013] In a possible implementation, the first heat exchange element includes a first heat exchange channel, and the second heat exchange element includes a second heat exchange channel;

[0014] The heat exchange device further includes a first adjusting member and a second adjusting member, wherein the first adjusting member is used to open or block the first heat exchange channel, and the second adjusting member is used to open or block the second heat exchange channel.

[0015] In a possible implementation, the heat exchange device includes a joint, the joint includes a first channel and a second channel, the first channel is connected to the first heat exchange channel, and the second channel is connected to the second heat exchange channel;

[0016] The first adjusting member and the second adjusting member are arranged on the joint, and the first adjusting member is used to open or block the first channel, and the second adjusting member is used to open or block the second channel.

[0017] In a possible implementation, the first adjusting member and the second adjusting member each include a driving portion and an adjusting portion connected to the driving portion; the adjusting portion of the first adjusting member is disposed in the first channel, and the adjusting portion of the second adjusting member is disposed in the second channel;

[0018] The regulating portion has a first state and a second state. When the regulating portion is in the first state, the corresponding first channel or the second channel is blocked. When the regulating portion is in the second state, the corresponding first channel or the second channel is opened.

[0019] The driving portion drives the corresponding adjusting portion to move, so that the adjusting portion switches between the first state and the second state.

[0020] In a possible implementation, the adjustment portion includes an adjustment plate; the shape of the adjustment plate matches the shape of the corresponding channel;

[0021] The driving part drives the corresponding adjusting part to rotate so that the adjusting part switches between the first state and the second state; wherein, when in the first state, the axis of the adjusting plate and the corresponding channel are perpendicular to each other; when in the second state, the axis of the adjusting plate and the corresponding channel are parallel to each other.

[0022] In a possible implementation, the first adjusting member and the second adjusting member each further include a connecting portion, and the output shaft of the driving portion is connected to the corresponding adjusting portion through the corresponding connecting portion.

[0023] In a possible implementation, the joint includes a first communicating hole and a second communicating hole, the first communicating hole and the second communicating hole extending along the axis of the output shaft of the corresponding driving portion, the first communicating hole communicating with the first channel, and the second communicating hole communicating with the second channel;

[0024] The connecting portion is inserted into the corresponding communicating hole.

[0025] In a possible implementation, the joint further includes two first limiting portions spaced apart from each other, with a preset angle between the two first limiting portions;

[0026] The connecting portion is provided with a second limiting portion; the second limiting portion is used to cooperate with one of the first limiting portions for limiting.

[0027] In a possible implementation, the battery pack further includes a controller and a temperature sensor, wherein the controller is disposed on the connector, and the temperature sensor is used to detect the temperature of the battery pack;

[0028] The controller is electrically connected to the temperature sensor and the driving unit, and controls the working state of the driving unit according to the temperature sensor.

[0029] In a possible implementation, the heat exchange device further includes a shell, which is disposed on the joint and sleeved on the controller, the first regulating member, and the second regulating member.

[0030] In a possible implementation, each of the first channel and the second channel includes two channels, and each of the first heat exchange channel and the second heat exchange channel includes a first sub-heat exchange channel and a second sub-heat exchange channel that are independent of each other, and the first sub-heat exchange channel is located on at least one side of the second sub-heat exchange channel;

[0031] The first sub-heat exchange channel of the first heat exchange channel is connected to one of the first channels, and the second sub-heat exchange channel is connected to another of the first channels;

[0032] The first sub-heat exchange channel of the second heat exchange channel is communicated with one of the second channels, and the second sub-heat exchange channel is communicated with another one of the second channels.

[0033] In a possible implementation, each of the first channels includes a first sub-channel and a second sub-channel that are independent of each other;

[0034] The first sub-channel of one of the first channels is connected to the liquid inlet end of the first sub-heat exchange channel, and the second sub-channel is connected to the liquid outlet end of the first sub-heat exchange channel;

[0035] The first sub-channel of another one of the first channels is communicated with the liquid inlet end of the second sub-heat exchange channel, and the second sub-channel is communicated with the liquid outlet end of the second sub-heat exchange channel.

[0036] In a possible implementation, each of the second channels includes a third sub-channel and a fourth sub-channel that are independent of each other;

[0037] The third sub-channel of one of the second channels is connected to the liquid inlet end of the first sub-heat exchange channel of the second heat exchange channel, and the second sub-channel is connected to the liquid outlet end of the first sub-heat exchange channel of the second heat exchange channel;

[0038] The third sub-channel of the other second channel is connected to the liquid inlet of the second heat exchange sub-channel of the second heat exchange channel, and the fourth sub-channel is connected to the liquid outlet of the second heat exchange sub-channel. In one possible implementation, the first heat exchange sub-channel includes two, and the two first heat exchange sub-channels are respectively arranged at both ends of the second heat exchange sub-channel and are connected to each other.

[0039] In a possible implementation, the first heat exchange channels include at least two, and the at least two first heat exchange channels are arranged along a first direction;

[0040] In two adjacent first heat exchange channels, two adjacent first sub-heat exchange channels are connected to each other, and two adjacent second sub-heat exchange channels are connected to each other.

[0041] In a possible implementation, each of the first sub-heat exchange channel and the second sub-heat exchange channel includes a plurality of channels;

[0042] The plurality of first sub-heat exchange channels are connected to one of the first channels through a first converging channel; the plurality of second sub-heat exchange channels are connected to another one of the first channels through a second converging channel.

[0043] In a possible implementation, along a vertical direction from the first heat exchange element to the second heat exchange element, the first adapter joint and the second adapter joint are arranged opposite to each other.

[0044] In a possible implementation, the first heat exchange channel and the second heat exchange channel are symmetrically arranged;

[0045] And / or, the first converging flow channel of the first heat exchange element and the first converging flow channel of the second heat exchange element are symmetrically arranged;

[0046] And / or, the second converging flow channel of the first heat exchange element and the second converging flow channel of the second heat exchange element are symmetrically arranged.

[0047] In one possible implementation, the heat exchange device further includes a first adapter joint and a second adapter joint, wherein the first channel of the joint is connected to the first heat exchange channel through the first adapter joint; and the second channel of the joint is connected to the second heat exchange channel through the second adapter joint.

[0048] In a possible implementation, it further includes a crossbeam extending along a second direction, wherein the crossbeam is arranged between two adjacent first sub-heat exchange channels of two adjacent first heat exchange channels; the second direction intersects with the first direction.

[0049] In a possible implementation, a first heat conducting member is provided between the first heat exchange member and the battery pack; and a second heat conducting member is provided between the second heat exchange member and the battery pack.

[0050] A second aspect of the embodiments of the present application provides a battery pack, comprising a battery pack and the heat exchange device according to the first aspect;

[0051] The battery pack is disposed in the accommodating cavity of the heat exchange device and exchanges heat with the heat exchange device.

[0052] In a possible implementation, the battery pack includes a plurality of batteries arranged sequentially along the second direction; adjacent batteries are connected in series.

[0053] In a possible implementation, the battery packs include at least two, and the at least two battery packs are arranged at intervals along a first direction; and adjacent battery packs are connected in series.

[0054] In a possible implementation, each of the battery packs includes a first battery and a second battery, and the first battery and the second battery are respectively located at ends of each of the battery packs in the second direction;

[0055] One of the first batteries serves as a positive terminal, and the other first battery serves as a negative terminal; two adjacent second batteries are connected via a connecting aluminum busbar.

[0056] A third aspect of the embodiments of the present application provides an electric device, comprising an electric device and the battery pack described in the second aspect, wherein the battery pack is electrically connected to the electric device and is used to provide electrical energy to the electric device.

[0057] In the heat exchange device, battery pack, and electrical equipment provided in the embodiments of the present application, the heat exchange device includes a first heat exchange element and a second heat exchange element. The second heat exchange element is disposed on the first heat exchange element and, together with the first heat exchange element, forms a chamber for accommodating the battery pack. This allows the first and second heat exchange elements to serve as the upper and lower shells of the battery pack to protect the battery pack, eliminating the need for a separate heat exchange device and reducing the space occupied by the heat exchange device, resulting in simple battery pack assembly and high space utilization.

[0058] In addition, this embodiment can also utilize the first heat exchange component to contact and exchange heat with the bottom of the battery pack, and the second heat exchange component to contact and exchange heat with the top of the battery pack, thereby achieving double-sided heat exchange, thereby improving the heat exchange capacity of the heat exchange device, and being able to promptly dissipate the heat generated by the battery pack in a timely manner to ensure that the battery pack maintains an appropriate temperature.

[0059] In addition to the technical problems solved by the embodiments of the present application described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by the heat exchange device, battery pack and electrical equipment provided by the embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0061] Figure 1 An exploded diagram of a battery pack provided in an embodiment of the present application;

[0062] Figure 2 A schematic diagram of a first heat exchange element provided in an embodiment of the present application;

[0063] Figure 3 A partial schematic diagram of a first heat exchange element provided in an embodiment of the present application;

[0064] Figure 4 for Figure 3 A magnified schematic diagram of area A in the middle;

[0065] Figure 5 A schematic diagram of a second heat exchange element provided in an embodiment of the present application;

[0066] Figure 6 A bottom view of the second heat exchange element provided in an embodiment of the present application;

[0067] Figure 7 for Figure 5 A magnified schematic diagram of area B in the middle;

[0068] Figure 8 A schematic diagram of a connector provided in an embodiment of the present application;

[0069] Figure 9 Partial schematic diagram of the connector provided in the embodiment of this application Figure 1 ;

[0070] Figure 10 Partial schematic diagram of the connector provided in the embodiment of this application Figure 2 ;

[0071] Figure 11 A schematic diagram of the internal structure of a connector provided in an embodiment of the present application;

[0072] Figure 12 A schematic diagram of the structure of the adjustment member provided in an embodiment of the present application;

[0073] Figure 13 A layout diagram of the first limiting portion provided in an embodiment of the present application;

[0074] Figure 14 A cross-sectional view of a connector provided in an embodiment of the present application Figure 1 ;

[0075] Figure 15 A cross-sectional view of a connector provided in an embodiment of the present application Figure 2 ;

[0076] Figure 16 Schematic diagram of the connector and adapter connector provided in the embodiments of the present application;

[0077] Figure 17 A layout diagram of the battery pack provided in an embodiment of the present application.

[0078] Description of reference numerals:

[0079] 10: first heat exchange element; 11: first accommodating chamber; 12: temperature uniform plate; 13: flow channel plate; 14: first heat exchange flow channel; 15: crossbeam; 16: expansion beam;

[0080] 20: second heat exchange element; 21: second accommodating chamber; 22: second heat exchange channel; 23: lifting lug;

[0081] 30: battery pack; 31: first battery; 32: second battery;

[0082] 40: first heat conducting member;

[0083] 50: second heat conducting member;

[0084] 60: protective plate;

[0085] 70: buffer;

[0086] 80: distribution box;

[0087] 90: first adjusting member; 91: driving part; 92: adjusting part; 93: connecting part; 94: second limiting part; 95: wiring harness fixing post; 96: wiring harness;

[0088] 100: second adjusting member;

[0089] 110: Connector; 111: First channel; 1111: First sub-channel; 1112: Second sub-channel; 112: Second channel; 1121: Third sub-channel; 1122: Fourth sub-channel; 113: First connecting hole; 114: Second connecting hole; 115: First limiting portion; 116: First converging channel; 1161: Main channel; 1162: First branch channel; 1163: Second branch channel; 117: Second converging channel; 118: Total liquid inlet channel; 119: Total liquid outlet channel;

[0090] 120: controller;

[0091] 130: Connecting cables;

[0092] 140: housing;

[0093] 150: first adapter connector;

[0094] 160: second adapter joint; 161: connecting pipe;

[0095] 170: total positive aluminum bar;

[0096] 180: total negative aluminum bar;

[0097] 190: Connect the aluminum busbar. DETAILED DESCRIPTION

[0098] In response to the related technical issues in the background technology, embodiments of the present application provide a heat exchange device, a battery pack, and an electrical device. The heat exchange device includes a first heat exchange element and a second heat exchange element. The second heat exchange element is disposed on the first heat exchange element and, together with the first heat exchange element, forms a chamber for accommodating the battery pack. In this way, the first and second heat exchange elements can be used as the upper and lower shells of the battery pack to protect the battery pack, eliminating the need for a separate heat exchange device and reducing the space occupied by the heat exchange device, making the battery pack assembly simple and space-efficient.

[0099] In addition, this embodiment can utilize a first heat exchange element to contact and exchange heat with the bottom of the battery pack, and a second heat exchange element to contact and exchange heat with the top of the battery pack, achieving double-sided heat exchange, thereby improving the heat exchange capacity of the heat exchange device and promptly dissipating the heat generated by the battery pack, ensuring that the battery pack maintains a suitable temperature. The heat exchange device can promptly dissipate the heat generated by the battery pack. On the one hand, it reduces the restrictions on the heat exchange device on the charging speed of the battery pack, enabling the battery pack to be used at a higher charging speed, thereby improving the charging efficiency of the battery pack and shortening the charging time of the battery pack. On the other hand, it can also prevent safety issues caused by overheating of the battery pack, such as thermal runaway and fire, thereby improving the safety of the battery pack.

[0100] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0101] An embodiment of the present application provides a heat exchange device that can be used to exchange heat with a battery pack. It should be understood that the heat exchange mentioned in this embodiment can be understood as the heat exchange device being able to cool or heat the battery pack. Specifically, the type of fluid circulating in the heat exchange device can be freely selected based on the environment in which the battery pack is located. For example, when the heat exchange device is used to cool the battery pack, the fluid can include refrigerant, CO2, or water.

[0102] Please refer to the attached Figure 1 To the attached Figure 7 The heat exchange device includes a first heat exchange member 10 and a second heat exchange member 20. The first heat exchange member 10 includes a first accommodating chamber 11, and the second heat exchange member 20 includes a second accommodating chamber 21. The second heat exchange member 20 is connected to the first heat exchange member 10 and covers the first accommodating chamber 11. The second accommodating chamber 21 and the first accommodating chamber 11 form an accommodating chamber.

[0103] The accommodating cavity is used to accommodate the battery pack 30. In this way, the first heat exchange component 10 and the second heat exchange component 20 can be used as the upper and lower shells of the battery pack to protect the battery pack. There is no need to install a heat exchange device separately, and the space occupied by the heat exchange device is reduced, making the battery pack assembly simple and the space utilization rate high.

[0104] In this embodiment, the first heat exchange element 10 is used to contact and exchange heat with the bottom of the battery pack 30, while the second heat exchange element 20 is used to contact and exchange heat with the top of the battery pack 30. This arrangement allows for dual-sided heat exchange using the first and second heat exchange elements 10, 20, thereby improving the heat exchange capacity of the heat exchange device and enabling timely dissipation of heat generated by the battery pack, ensuring that the battery pack maintains a suitable temperature. The first and second heat exchange elements 10, 20 are located at the bottom and top of the battery pack 30, respectively, further ensuring a more balanced temperature across the battery pack 30 in a direction perpendicular to the first heat exchange element 10, thereby improving the performance of the battery pack 30.

[0105] Furthermore, the heat exchanger can promptly dissipate the heat generated by the battery pack. This reduces the restrictions on the heat exchanger's ability to charge the battery pack, enabling the battery pack to charge at a higher rate, thereby improving charging efficiency and shortening charging time. Furthermore, it prevents safety issues caused by battery pack overheating, such as thermal runaway and fire, thereby improving the safety of the battery pack.

[0106] To improve the heat exchange capacity of the heat exchange device, the heat exchange device provided in this embodiment further includes a first heat conductor 40 and a second heat conductor 50. The first heat conductor 40 is disposed between the first heat exchange member 10 and the battery pack 30, and covers at least the entire bottom of the battery pack 30. The second heat conductor 50 is disposed between the second heat exchange member 20 and the battery pack 30, and covers at least the entire top of the battery pack 30. The first heat conductor 40 and the second heat conductor 50 include, but are not limited to, thermally conductive adhesive.

[0107] The first heat conducting member 40 and the second heat conducting member 50 can quickly conduct the heat generated by the battery pack 30 to the first heat exchanging member 10 and the second heat exchanging member 20, thereby improving the heat exchanging effect of the heat exchanging device.

[0108] In this example, a protective member is provided on the side of the first heat exchanger 10 facing away from the second heat exchanger 20. This protects the heat exchanger while facilitating installation of the heat exchanger and electrical equipment. The protective member may include a buffer 70 and a protective plate 60. The buffer 70 is provided on the side of the first heat exchanger 10 facing away from the second heat exchanger 20, while the protective plate 60 is provided on the side of the buffer 70 facing away from the first heat exchanger 10.

[0109] It should be noted that a distribution box 80 is also provided in the accommodating chamber, which is separated from the battery pack 30, to facilitate the control of the charging and discharging functions of the battery pack 30. Among them, the second heat exchanger 20 is provided with an inspection hole and a cover body for covering the inspection hole, and the inspection hole passes through the second heat exchanger 20. When the distribution box 80 needs to be inspected or replaced, the cover body can be opened, thereby improving the inspection efficiency of the heat exchange device. In addition, the cover body and the inspection hole are sealed. For example, a sealant is provided between the cover body and the inspection hole to prevent external moisture or impurities from entering the accommodating chamber, thereby improving the safety of the heat exchange device.

[0110] It should be noted that the first heat exchanger 10 and the second heat exchanger 20 can be a single piece or a separate piece. For example, a portion of the first heat exchanger 10 is recessed in a direction away from the second heat exchanger 20 to form a first accommodating chamber 11; a portion of the second heat exchanger 20 is recessed in a direction away from the first heat exchanger 10 to form a second accommodating chamber 21, wherein the first accommodating chamber 11 and the second accommodating chamber 21 are opposite to each other. In this embodiment, a stamping process can be used to form the first heat exchanger 10 and the second heat exchanger 20, which can not only simplify the preparation process of the first heat exchanger 10 and the second heat exchanger 20, but also improve the structural strength of the first heat exchanger 10 and the second heat exchanger 20.

[0111] In this embodiment, the first heat exchange element 10 and the second heat exchange element 20 have the same structure, both including a stacked temperature averaging plate 12 and a flow channel plate 13 , with a heat exchange channel formed between the flow channel plate 13 and the temperature averaging plate 12 .

[0112] During the preparation of the first heat exchanger, a stamping process can be used to form a first accommodating chamber 11 on the flow channel plate 13, and then a heat exchange flow channel is formed on the bottom wall of the first accommodating chamber 11; the temperature equalizing plate 12 is placed on the flow channel plate 13, and the temperature equalizing plate 12 is fixed to the flow channel plate 13 by welding or bolts. It should be noted that the preparation process of the second heat exchanger is the same as that of the first heat exchanger, and this embodiment will not be described in detail here. This embodiment uses a stamping process to form a heat exchange flow channel on the flow channel plate 13, which can simplify the manufacturing process of the first heat exchanger 10 and the second heat exchanger 20, improve production efficiency, and reduce manufacturing costs.

[0113] In one possible implementation, please refer to the attached Figure 3 , Attachment Figure 4 , Attachment Figure 5 and attached Figure 6 The first heat exchange element 10 includes a first heat exchange channel 14, and the second heat exchange element 20 includes a second heat exchange channel 22; the first heat exchange channel 14 and the second heat exchange channel 22 are used for fluid circulation, thereby facilitating heat exchange between the fluid and the battery pack 30.

[0114] The heat exchange device also includes a first regulating member 90 and a second regulating member 100. The first regulating member 90 is used to open or block the first heat exchange channel 14, and the second regulating member 100 is used to open or block the second heat exchange channel 22. In this embodiment, the first regulating member 90 and the second regulating member 100 respectively open or block the first heat exchange channel 14 and the second heat exchange channel 22. The user can flexibly adjust the flow path of the fluid according to actual needs, thereby achieving precise control of the heat exchange process and further optimizing the heat exchange effect. In addition, the first regulating member 90 and the second regulating member 100 can also be used to close some flow channels when high-intensity heat exchange is not required, reducing the circulation volume of the fluid, thereby reducing energy consumption and achieving energy-saving effects.

[0115] It should be understood that the first regulating member 90 can be directly provided as a solenoid valve or a temperature control valve at the liquid inlet end of the first heat exchange channel 14. The first regulating member 90 can also be an external component and indirectly connected to the first heat exchange channel 14.

[0116] Exemplarily, the heat exchange device further includes a connector 110 , which is used to connect the first heat exchange channel 14 and the second heat exchange channel 22 to external liquid supply equipment respectively.

[0117] Please refer to the attached Figure 8 To the attached Figure 11 The joint 110 includes a first channel 111 and a second channel 112, wherein the first channel 111 is connected to the first heat exchange channel 14, and the second channel 112 is connected to the second heat exchange channel 22, so that the fluid can flow through the first channel 111 into the first heat exchange channel 14, and the fluid can flow through the second channel 112 into the second heat exchange channel 22.

[0118] The first regulating member 90 and the second regulating member 100 are disposed on the joint 110, and the first regulating member 90 is used to open or block the first channel 111, while the second regulating member 100 is used to open or block the second channel 112. By disposing the first regulating member 90 and the second regulating member 100 on the external joint 110, this embodiment not only controls the fluid in the first heat exchange channel 14 and the second heat exchange channel 22, but also facilitates the installation and maintenance of the heat exchange device. When the first regulating member 90 and the second regulating member 100 malfunction, the user only needs to replace or maintain the joint without having to disassemble the first heat exchange member 10 and the second heat exchange member 20, thereby reducing maintenance costs and time.

[0119] It should be understood that the fluid needs to circulate in the first heat exchange channel 14 and the second heat exchange channel 22, and the first heat exchange channel 14 and the second heat exchange channel 22 need to have a liquid inlet end and a liquid outlet end. Therefore, the first channel 111 and the second channel 112 provided in this embodiment both include a liquid inlet channel and a liquid outlet channel. For example, please refer to the attached Figure 10and attached Figure 11 The first channel 111 includes a first sub-channel 1111 and a second sub-channel 1112. The first sub-channel 1111 is connected to the liquid inlet of the first heat exchange channel 14, and the second sub-channel 1112 is connected to the liquid outlet of the first heat exchange channel 14. Correspondingly, the second channel 112 includes a third sub-channel 1121 and a fourth sub-channel 1122. The third sub-channel 1121 is connected to the liquid inlet of the second heat exchange channel 22, and the fourth sub-channel 1122 is connected to the liquid outlet of the second heat exchange channel 22.

[0120] Please refer to the attached Figure 12 , Attachment Figure 14 and attached Figure 15 In one possible implementation, the first adjusting member 90 and the second adjusting member 100 have the same structure, each including a driving portion 91 and an adjusting portion 92. The output shaft of the driving portion 91 is connected to the adjusting portion 92 to drive the adjusting portion 92 to move, thereby opening or closing the corresponding first channel 111 and second channel 112. In other words, the adjusting portion 92 of the first adjusting member 90 is disposed within the first channel 111, and the adjusting portion 92 of the second adjusting member 100 is disposed within the second channel 112.

[0121] The adjustment portion 92 has a first state and a second state, wherein the Figure 14 The state shown in is the first state. Figure 15 The state shown in FIG is the second state. When the regulating portion 92 is in the first state, the corresponding first channel 111 and second channel 112 are blocked. When the regulating portion 92 is in the second state, the corresponding first channel 111 and second channel 112 are opened. The driving portion 91 drives the regulating portion 92 to move, causing the regulating portion 92 to switch between the first state and the second state.

[0122] With this arrangement, the output shaft of the driving part 91 drives the corresponding adjusting part 92 to move, thereby achieving precise control of the first channel 111 and the second channel 112, which is beneficial for users to flexibly adjust the flow path of the fluid according to actual needs and ensure the optimization of the heat exchange process.

[0123] It should be noted that the driving portion 91 drives the adjusting portion 92 to move, which can be understood as driving the adjusting portion 92 to move along the axis of its output shaft, or driving the adjusting portion 92 to rotate about the axis of its output shaft. To facilitate a detailed description of the structures of the first adjusting member 90 and the second adjusting member 100, the following embodiments all use the first adjusting member 90 as an example.

[0124] In one example, the driving portion 91 may be a micro-cylinder, and the adjusting portion 92 may be an adjusting plate. The outer circumference of the adjusting plate matches the inner surface of the first channel 111, and the axes of the adjusting plate and the first channel 111 are perpendicular to each other. The driving portion 91 drives the adjusting portion 92 to move up and down in a direction perpendicular to the first channel 111 to change the distance between the bottom surface of the adjusting portion 92 and the bottom of the first channel 111, thereby switching the adjusting portion 92 between the first state and the second state.

[0125] In another example, the drive unit 91 includes a drive motor, and the adjustment unit 92 includes an adjustment plate; the shape of the adjustment plate matches the shape of the corresponding channel. The drive unit 91 drives the corresponding adjustment unit 92 to rotate, thereby switching the adjustment unit 92 between a first state and a second state. In the first state, the axis of the adjustment plate and the corresponding channel are perpendicular to each other; in the second state, the axis of the adjustment plate and the corresponding channel are parallel to each other.

[0126] The first adjusting member 90 and the first channel 111 are used as an example for description. Figure 14 When in the first state, the axis of the adjustment plate and the first channel 111 are perpendicular to each other, and the outer peripheral surface of the adjustment plate is arranged in contact with the inner wall of the first channel 111 to block the first channel 111. Figure 15 When in the second state, the axis of the adjustment plate and the first channel 111 are parallel to each other to open the first channel 111.

[0127] It should be noted that the output shaft of the driving part 91 can be directly connected to the regulating part 92 or indirectly connected to the regulating part 92. Figure 12 The first adjusting member 90 and the second adjusting member 100 each further include a connecting portion 93, through which the output shaft of the driving member 91 is connected to the corresponding adjusting member 92. This arrangement facilitates the installation of the first adjusting member 90 and the second adjusting member 100 and the joint 110, ensuring that the driving member 91 is exposed to the outside of the joint 110. The connecting portion 93 may be a connecting rod.

[0128] In one possible implementation, please refer to the attached Figure 10 The connector 110 includes a first communicating hole 113 and a second communicating hole 114. The first communicating hole 113 and the second communicating hole 114 extend along the axial direction of the output shaft of the corresponding driving portion 91. The first communicating hole 113 is connected to the first channel 111, and the second communicating hole 114 is connected to the second channel 112. Figure 10 Taking the illustrated orientation as an example, the first communication hole 113 and the second communication hole 114 extend in a vertical direction.

[0129] The connecting portion 93 is inserted into the corresponding connecting hole, and a portion of the connecting portion 93 extends outside the connecting hole. In other words, the connecting portion 93 of the first adjusting member 90 is inserted into the first connecting hole 113, and the connecting portion 93 of the second adjusting member 100 is inserted into the second connecting hole 114. This arrangement not only facilitates the installation of the first adjusting member 90 and the second adjusting member 100, but also provides space for the connecting portion 93 to rotate, thereby improving the stability of the first adjusting member 90 and the second adjusting member 100.

[0130] Please refer to the attached Figure 9 and attached Figure 13 The joint 110 further includes two first limiting portions 115 spaced apart from each other, with a preset angle between the two first limiting portions 115 ; illustratively, the preset angle is 90°.

[0131] The connecting portion 93 is provided with a second limiting portion 94, which is used to cooperate with one of the first limiting portions 115 for limiting position. The two first limiting portions 115 are used to define a limiting area to ensure that the second limiting portion 94 can only move within the limiting area, thereby achieving precise control of the state of the fluid.

[0132] In order to further accurately control the operation of the driving unit 91, the heat exchange device also includes a controller 120 and a temperature sensor (not shown in the figure). The controller 120 is arranged on the connector 110, and the temperature sensor is used to detect the temperature of the battery pack 30; the controller 120 is electrically connected to the temperature sensor and the driving unit 91, and the controller 120 controls the working state of the driving unit 91 according to the temperature sensor.

[0133] It should be noted that there can be multiple temperature sensors. The temperature of each battery and each position of the battery in the battery pack 30 is monitored by multiple temperature sensors, and the temperature is transmitted to the controller 120. The controller 120 can control the working state of the drive unit 91, and thereby control the flow of the fluid in the first heat exchange channel 14 and the second heat exchange channel 22, thereby achieving precise control of the temperature of the battery pack 30.

[0134] In addition, the controller 120 can be a separate component, and the controller can directly generate action instructions. The controller can also be connected to the battery management system (BMS) of the battery pack. For example, please refer to the attached Figure 8 and attached Figure 9 The controller 120 is electrically connected to the battery management system via a connecting cable 130 . The driving unit 91 is provided with a harness fixing post 95 , which is electrically connected to the controller 120 via a harness 96 .

[0135] In one possible implementation, the heat exchange device further includes a housing 140, which is disposed on the connector 110 and sleeved over the controller 120, the first adjustment member 90, and the second adjustment member 100. This configuration protects the controller 120, the first adjustment member 90, and the second adjustment member 100, thereby improving the safety of these components.

[0136] It should be noted that the battery pack 30 includes at least two heating areas with different heat generation. Among them, the area opposite to the pole of the battery pack 30 has a larger heat generation and is usually located at the two ends of the battery pack 30 in the first direction; the other areas of the battery pack 30 excluding the areas opposite to the pole have a smaller heat generation and are usually the middle area of the battery pack 30.

[0137] Please refer to the attached Figure 3 To the attached Figure 5 The first heat exchange channel 14 and the second heat exchange channel 22 provided in the embodiment of the present application both include a first sub-heat exchange channel 141 and a second sub-heat exchange channel 142 that are independent of each other, and the first sub-heat exchange channel 141 is located on at least one side of the second sub-heat exchange channel 142.

[0138] The number of the first channel 111 and the second channel 112 may be two; the first sub-heat exchange channel 141 of the first heat exchange channel 14 is connected to one of the first channels 111 , and the second sub-heat exchange channel 142 is connected to the other first channel 111 .

[0139] The first sub-heat exchange channel 141 of the second heat exchange channel 22 is in communication with one of the second channels 112 , and the second sub-heat exchange channel 142 is in communication with the other second channel 112 .

[0140] With this configuration, the first sub-heat exchange channel 141 and the second sub-heat exchange channel 142 of the first heat exchange element 10 have independent first channels 111, and the first sub-heat exchange channel 141 and the second sub-heat exchange channel 142 of the second heat exchange element 20 have independent second channels 112. This facilitates independent control of the first sub-heat exchange channel 141 and the second sub-heat exchange channel 142 of the first heat exchange element 10, as well as the first sub-heat exchange channel 141 and the second sub-heat exchange channel 142 of the second heat exchange element 20. By adopting a strategy of different flow rates and allocating the flow rates of the first sub-heat exchange channel 141 and the second sub-heat exchange channel 142 according to the heat exchange requirements of different heating zones of the battery pack 30, the first sub-heat exchange channel 141 and the second sub-heat exchange channel 142 have different heat exchange capacities, thereby reducing the temperature difference between different heating zones of the battery pack 30.

[0141] It should be noted that when the first heat exchange channel 14 includes a first sub-heat exchange channel 141 and a second sub-heat exchange channel 142 that are independent of each other, and both the first sub-heat exchange channel 141 and the second sub-heat exchange channel 142 have a liquid inlet and a liquid outlet, each first channel 111 is generally required to include two. To facilitate a detailed description of the flow direction of the fluid in the first heat exchange channel 14, it is possible to define each first channel 111 as a first sub-channel 1111 and a second sub-channel 1112, and the first sub-channel 1111 and the second sub-channel 1112 are independent of each other.

[0142] The first sub-channel 1111 of one first channel 111 is connected to the liquid inlet of the first sub-heat exchange channel 141, and the second sub-channel 1112 is connected to the liquid outlet of the first sub-heat exchange channel 141. The first sub-channel 1111 of the other first channel 111 is connected to the liquid inlet of the second sub-heat exchange channel 142, and the second sub-channel 1112 is connected to the liquid outlet of the second sub-heat exchange channel 142. Furthermore, there are two first regulating members 90, one of which is disposed in each first sub-channel 1111.

[0143] Please continue to refer to the attached Figure 10 Each second channel 112 includes a third sub-channel 1121 and a fourth sub-channel 1122 that are independent of each other. That is, the number of the third sub-channels 1121 is two, and the number of the fourth sub-channels 1122 is two.

[0144] Please refer to the attached Figure 7 and attached Figure 10 , the third sub-channel 1121 of one second channel 112 is connected to the liquid inlet end of the first sub-heat exchange channel 141 of the second heat exchange channel 22, and the second sub-channel 1112 is connected to the liquid outlet end of the first sub-heat exchange channel 141 of the second heat exchange channel 22.

[0145] The third sub-channel 1121 of the other second channel 112 is connected to the liquid inlet of the second sub-heat exchange channel 142 of the second heat exchange channel 22, and the fourth sub-channel 1122 is connected to the liquid outlet of the second sub-heat exchange channel 142. At the same time, there are also two second regulating members 100, with one second regulating member 100 disposed in each third sub-channel 1121.

[0146] With such a configuration, the number of the first channel 111, the second channel 112, the first adjustment member 90 and the second adjustment member 100 can be reasonably set through the layout of the first heat exchange channel 14 and the second heat exchange channel 22, thereby achieving independent control of the first heat exchange channel 14 and the second heat exchange channel 22, thereby ensuring the temperature balance of the battery module.

[0147] In this embodiment, the number of first sub-heat exchange channels 141 can be one or two. In one example, there is one first sub-heat exchange channel 141, which can be disposed on one side of the second sub-heat exchange channel 142. In another example, there are two first sub-heat exchange channels 141, which are disposed at both ends of the second sub-heat exchange channel 142 and are interconnected. In this manner, the two first sub-heat exchange channels 141 form a U-shaped structure, and the second sub-heat exchange channel 142 is disposed within the U-shaped cavity.

[0148] The two first sub-heat exchange channels 141 can cool the high heat generation area of the battery pack 30, and the second sub-heat exchange channel 142 can cool the low heat generation area of the battery pack 30. The second sub-heat exchange channel 142 used to cool the low heat generation area can not turn on the cooling during use or delay the cooling, so as to achieve the effects of reducing the temperature difference of the battery pack 30 and saving power consumption.

[0149] In addition, the two first sub-heat exchange channels 141 are connected in series, which can reduce the number of first sub-channels 1111, thereby simplifying the heat exchange device and reducing manufacturing costs.

[0150] In a possible implementation, the first heat exchange channel 14 includes at least two, and the at least two first heat exchange channels 14 are arranged along the first direction; in two adjacent first heat exchange channels 14, the adjacent two first sub-heat exchange channels 141 are interconnected, and the adjacent two second sub-heat exchange channels 142 are interconnected. Figure 3 The Y direction in the second direction can be attached Figure 3 The X direction in .

[0151] In at least two first heat exchange channels, multiple first sub-heat exchange channels 141 share one liquid inlet end, and multiple second sub-heat exchange channels 142 share one liquid inlet end. In this way, the number of first sub-channels 1111 can be reduced, the structure of the channel is simplified, the complexity and manufacturing difficulty of the channel are reduced, and the production cost is reduced.

[0152] It should be noted that the number of the first sub-heat exchange channel 141 and the second sub-heat exchange channel 142 can be one or more. The multiple first sub-heat exchange channels 141 are connected to one of the first channels 111 through the first confluence channel 116; the multiple second sub-heat exchange channels 142 are connected to another first channel 111 through the second confluence channel. The provision of multiple sub-heat exchange channels can increase the heat exchange area of the heat exchange device, thereby improving the heat exchange efficiency of the heat exchange device; and the parallel design of multiple sub-heat exchange channels can effectively reduce the pressure loss of the fluid during the flow process. In addition, through the design of the confluence channel, the fluid can be more evenly distributed to each sub-heat exchange channel, avoiding the situation where the fluid flows too fast or too slow in some channels, thereby improving the stability and efficiency of the heat exchange device.

[0153] The first converging channel 116 may include a main channel 1161, a first branch channel 1162, and a second branch channel 1163. One end of the main channel 1161 is connected to one of the first channels 111, and one end of the main channel 1161 is connected to the first branch channel 1162 and the second branch channel 1163, respectively. The other ends of the first branch channel 1162 and the second branch channel 1163 may be connected to multiple first sub-heat exchange channels 141. It should be noted that the other end of the first branch channel 1162 may be connected to one or more first sub-heat exchange channels 141. For example, the other end of the first branch channel 1162 is connected to two first sub-heat exchange channels 141. The other end of the second branch channel 1163 may be connected to one or more first sub-heat exchange channels 141. For example, the other end of the second branch channel 1163 is connected to two first sub-heat exchange channels 141.

[0154] The layout of the second converging flow channels 117 may be the same as that of the first converging flow channels 116 , and will not be further elaborated in this embodiment.

[0155] In addition, given that the fluid needs to circulate in the first sub-heat exchange channel 141 and the second sub-heat exchange channel 142, the number of the first converging channel 116 and the second converging channel 117 is two each, and accordingly, the number of the first sub-channel 1111 and the second sub-channel 1112 is also two each: one of the first converging channels 116 connects the liquid inlet end of the first sub-heat exchange channel 141 and one of the first sub-channels 1111, and the other first converging channel 116 connects the liquid outlet end of the first sub-heat exchange channel 141 and one of the second sub-channels 1112.

[0156] One of the second converging channels 117 is connected to the liquid inlet of the second sub-heat exchange channel 142 and another first sub-channel 1111 , and another second converging channel 117 is connected to the liquid outlet of the second sub-heat exchange channel 142 and another second sub-channel 1112 .

[0157] It should be noted that the first heat exchange channel 14 and the first channel 111 , as well as the second heat exchange channel 22 and the second channel 112 , may be directly connected or indirectly connected.

[0158] Please refer to the attached Figure 16 The heat exchange device also includes a first adapter joint 150 and a second adapter joint 160. The first channel 111 of the joint 110 is connected to the first heat exchange channel 14 through the first adapter joint 150; the second channel 112 of the joint 110 is connected to the second heat exchange channel 22 through the second adapter joint 160.

[0159] The first channel 111 of the connector 110 is connected to the first adapter connector 150 via a connecting pipe 161 , and the second channel 112 of the connector 110 is connected to the second adapter connector 160 via a connecting pipe 161 .

[0160] In this embodiment, the two first sub-channels 1111 serve as liquid inlet channels of the first heat exchange channel 14, and the two third sub-channels 1121 serve as liquid inlet channels of the second heat exchange channel 22; the two second sub-channels 1112 serve as liquid outlet channels of the first heat exchange channel 14, and the two fourth sub-channels 1122 serve as liquid outlet channels of the second heat exchange channel 22.

[0161] The two first sub-channels 1111 and the two third sub-channels 1121 are arranged on one side of the connector 110, and the two second sub-channels 1112 and the two fourth sub-channels 1122 are arranged on the other side of the connector 110. This is beneficial to the layout of multiple connecting tubes 161, which can shorten the length of the multiple connecting tubes 161 and improve the neatness of the layout of the multiple connecting tubes 161.

[0162] It should be noted that, in order to facilitate the connection of the two first sub-channels 1111 and the two third sub-channels 1121, as well as the two second sub-channels 1112 and the two fourth sub-channels 1122 with external liquid storage devices, please refer to the attached Figure 11 The connector 110 provided in this embodiment is provided with a total liquid inlet channel 118 and a total liquid outlet channel 119, wherein the total liquid inlet channel 118 is respectively connected to the two first sub-channels 1111 and the two third sub-channels 1121, and the total liquid outlet channel 119 is respectively connected to the two second sub-channels 1112 and the two fourth sub-channels 1122.

[0163] In one possible implementation, please refer to the attached Figure 1The first adapter joint 150 and the second adapter joint 160 are arranged opposite each other in a vertical direction from the first heat exchange element 10 to the second heat exchange element 20. For example, the first adapter joint 150 is arranged on the first heat exchange element 10, and the second adapter joint 160 is arranged on the second heat exchange element 20, with the first adapter joint 150 located directly above the second adapter joint 160. This arrangement facilitates the layout of the joints, adapter joints, first heat exchange channel 14, and second heat exchange channel 22, thereby simplifying the layout complexity of the connecting pipes.

[0164] In one possible implementation, the first heat exchange channel 14 and the second heat exchange channel 22 are symmetrically arranged; and / or the first converging channel 116 of the first heat exchange element 10 and the first converging channel 116 of the second heat exchange element 20 are symmetrically arranged; and / or the second converging channel 117 of the first heat exchange element 10 and the second converging channel 117 of the second heat exchange element 20 are symmetrically arranged. This arrangement can improve the uniform distribution of fluid in the first heat exchange element 10 and the second heat exchange element 20, thereby improving the heat exchange efficiency of the heat exchange device and reducing local overheating or overcooling. It can also simplify the preparation process of the heat exchange device and improve the structural stability of the heat exchange device.

[0165] In one possible implementation, please refer to the attached Figure 2 The first heat exchange element 10 also includes a crossbeam 15, which extends along the second direction and is arranged between two adjacent first sub-heat exchange channels 141 of two adjacent first heat exchange channels 14; in this way, the crossbeam 15 can separate the first accommodating chamber 11 into at least two sub-accommodating chambers, each of which is provided with a first heat exchange channel 14, and can then exchange heat with at least two battery packs 30, thereby improving the heat exchange efficiency of the heat exchange device.

[0166] It should be noted that, in the second direction, both ends of the crossbeam 15 are provided with expansion beams 16 extending along the first direction. The expansion beams 16 can prevent the battery pack 30 from expanding in the first direction, thereby reducing the deformation ability of the battery pack 30 .

[0167] The second heat exchanger 20 is further provided with a plurality of lifting lugs 23 on its top surface facing away from the first heat exchanger 10. The plurality of lifting lugs 23 are arranged sequentially along the first direction. For example, there are four lifting lugs 23. This arrangement facilitates lifting of the heat exchanger.

[0168] Please continue to refer to the attached Figure 1 An embodiment of the present application further provides a battery pack, comprising a battery pack 30 and a heat exchange device as described in any of the above embodiments. The battery pack 30 is disposed in a receiving cavity of the heat exchange device and exchanges heat with the heat exchange device.

[0169] Since the battery pack in this embodiment includes the heat exchange device described in any of the above embodiments, and thus has the structure and beneficial effects of the heat exchange device, this embodiment will not be further described here.

[0170] Please refer to the attached Figure 17 The battery pack includes a plurality of batteries arranged in sequence along a second direction; adjacent batteries are connected in series. For example, the positive and negative poles of two adjacent batteries are opposite, so that the two adjacent batteries can be connected via a connecting piece to achieve the connection of the adjacent batteries in series.

[0171] The number of battery packs 30 can be one or at least two. For example, the battery packs 30 include at least two, with the at least two battery packs 30 spaced apart along the first direction, and adjacent battery packs connected in series. This arrangement allows for a relatively simple high-voltage circuit design.

[0172] For example, each battery pack 30 includes a first battery cell and a second battery cell, located at the ends of each battery pack 30 in the second direction. One of the first batteries 31 serves as the positive terminal, connected to the positive terminal of the power consumption device via a main positive aluminum busbar 170. The other first battery cell 31 serves as the negative terminal, connected to the negative terminal of the power consumption device via a main negative aluminum busbar 180. Two adjacent second batteries 32 are connected via a connecting aluminum busbar 190. This arrangement creates a U-shaped high-voltage circuit for the battery pack, simplifying its design.

[0173] An embodiment of the present application further provides an electrical device, comprising an electrical device and a battery pack as described in any of the above embodiments, wherein the battery pack is electrically connected to the electrical device to provide electrical energy to the electrical device.

[0174] The electrical equipment in the embodiments of the present application may be a vehicle. For example, the vehicle may be a fuel-powered vehicle, a gas-powered vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle. Accordingly, the electrical device may be the vehicle's drive mechanism or the vehicle's control system.

[0175] In addition, the electrical equipment may also be other energy storage devices, such as mobile phones, portable devices, laptop computers, electric toys, electric tools, ships and spacecraft, etc., among which the spacecraft may include airplanes, rockets, space shuttles or spacecraft.

[0176] Since the electric device in this embodiment includes the battery pack described in any of the above embodiments, the electric device includes the battery pack structure and beneficial effects, and this embodiment will not be further described here.

[0177] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0178] It should be noted that references in this specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," and the like indicate that the described embodiment may include a particular feature, structure, or characteristic, but not necessarily every embodiment includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0179] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A heat exchange device, characterized in that: The invention comprises a first heat exchange element (10) and a second heat exchange element (20), wherein the first heat exchange element (10) comprises a first accommodating chamber (11), and the second heat exchange element (20) comprises a second accommodating chamber (21); The second heat exchange element (20) is connected to the first heat exchange element (10) and covers the first accommodating cavity; wherein the second accommodating cavity and the first accommodating cavity are interconnected and enclosed to form an accommodating cavity; The accommodating cavity is used to accommodate a battery pack (30), the first heat exchange element (10) is used to contact and exchange heat with the bottom of the battery pack (30), and the second heat exchange element (20) is used to contact and exchange heat with the top of the battery pack (30).

2. The heat exchange device according to claim 1, characterized in that: A partial area of the first heat exchange element (10) is recessed in a direction away from the second heat exchange element (20) to form the first accommodating cavity (11); A partial area of the second heat exchange member (20) is recessed in a direction away from the first heat exchange member (10) to form the second accommodating chamber (21); the first accommodating chamber (11) and the second accommodating chamber (21) are opposite to each other.

3. The heat exchange device according to claim 1, characterized in that The first heat exchange element (10) and the second heat exchange element (20) both comprise a temperature-averaging plate (12) and a flow channel plate (13) that are stacked, and a heat exchange flow channel is formed between the flow channel plate (13) and the temperature-averaging plate (12).

4. The heat exchange device according to any one of claims 1 to 3, characterized in that: The first heat exchange element (10) includes a first heat exchange channel (14), and the second heat exchange element (20) includes a second heat exchange channel (22); The heat exchange device further comprises a first regulating member (90) and a second regulating member (100), wherein the first regulating member (90) is used to open or block the first heat exchange channel (14), and the second regulating member (100) is used to open or block the second heat exchange channel (22).

5. The heat exchange device according to claim 4, characterized in that: The heat exchange device comprises a joint (110), the joint (110) comprises a first channel (111) and a second channel (112), the first channel (111) is in communication with the first heat exchange channel (14), and the second channel (112) is in communication with the second heat exchange channel (22); The first adjusting member (90) and the second adjusting member (100) are arranged on the joint, and the first adjusting member (90) is used to open or block the first channel (111), and the second adjusting member (100) is used to open or block the second channel (112).

6. The heat exchange device according to claim 5, characterized in that: The first adjusting member (90) and the second adjusting member (100) both comprise a driving portion (91) and an adjusting portion (92) connected to the driving portion (91); the adjusting portion (92) of the first adjusting member (90) is disposed in the first channel (111), and the adjusting portion (92) of the second adjusting member (100) is disposed in the second channel (112); The regulating portion (92) has a first state and a second state. When the regulating portion (92) is in the first state, the corresponding first channel (111) or the second channel (112) is blocked. When the regulating portion (92) is in the second state, the corresponding first channel (111) or the second channel (112) is opened. The driving portion (91) drives the corresponding adjusting portion (92) to move, so that the adjusting portion (92) switches between the first state and the second state.

7. The heat exchange device according to claim 6, characterized in that: The adjusting portion (92) includes an adjusting plate; the shape of the adjusting plate matches the shape of the corresponding channel; The driving portion (91) drives the corresponding adjusting portion (92) to rotate, so that the adjusting portion (92) switches between the first state and the second state; wherein, when in the first state, the axis of the adjusting plate and the corresponding channel are perpendicular to each other; and when in the second state, the axis of the adjusting plate and the corresponding channel are parallel to each other.

8. The heat exchange device according to claim 7, characterized in that: The first adjusting member (90) and the second adjusting member (100) both further include a connecting portion (93), and the output shaft of the driving portion (91) is connected to the corresponding adjusting portion (92) via the corresponding connecting portion (93).

9. The heat exchange device according to claim 8, characterized in that: The joint (110) includes a first communicating hole (113) and a second communicating hole (114), wherein the first communicating hole (113) and the second communicating hole (114) extend along the axial direction of the output shaft of the corresponding driving portion (91), the first communicating hole (113) is communicated with the first channel (111), and the second communicating hole (114) is communicated with the second channel (112); The connecting portion (93) is inserted into the corresponding communicating hole.

10. The heat exchange device according to claim 8, characterized in that: The joint (110) further comprises two first limiting portions (115) spaced apart from each other, with a preset angle between the two first limiting portions (115); A second limiting portion (94) is provided on the connecting portion (93); the second limiting portion (94) is used to perform limiting cooperation with one of the first limiting portions (115).

11. The heat exchange device according to any one of claims 6 to 10, characterized in that: It also includes a controller (120) and a temperature sensor, wherein the controller (120) is arranged on the connector (110), and the temperature sensor is used to detect the temperature of the battery pack (30); The controller (120) is electrically connected to the temperature sensor and the driving unit (91), and the controller (120) controls the working state of the driving unit (91) according to the temperature sensor.

12. The heat exchange device according to claim 11, characterized in that: The heat exchange device further comprises a shell (140), which is arranged on the joint (110) and is sleeved on the controller (120), the first regulating member (90) and the second regulating member (100).

13. The heat exchange device according to any one of claims 5 to 10, characterized in that: The first channel (111) and the second channel (112) each include two channels; the first heat exchange channel (14) and the second heat exchange channel (22) include mutually independent first sub-heat exchange channels (141) and second sub-heat exchange channels (142); the first sub-heat exchange channel (141) is located on at least one side of the second sub-heat exchange channel (142); The first sub-heat exchange channel (141) of the first heat exchange channel (14) is in communication with one of the first channels (111), and the second sub-heat exchange channel (142) is in communication with another of the first channels (111); The first sub-heat exchange channel (141) of the second heat exchange channel (22) is in communication with one of the second channels (112), and the second sub-heat exchange channel (142) is in communication with another of the second channels (112).

14. The heat exchange device according to claim 13, characterized in that: Each of the first channels (111) comprises a first sub-channel (1111) and a second sub-channel (1112) that are independent of each other; The first sub-channel (1111) of one of the first channels (111) is connected to the liquid inlet end of the first sub-heat exchange channel (141), and the second sub-channel (1112) is connected to the liquid outlet end of the first sub-heat exchange channel (141); The first sub-channel (1111) of another first channel (111) is connected to the liquid inlet end of the second sub-heat exchange channel (142), and the second sub-channel (1112) is connected to the liquid outlet end of the second sub-heat exchange channel (142).

15. The heat exchange device according to claim 14, characterized in that: Each of the second channels (112) includes a third sub-channel (1121) and a fourth sub-channel (1122) that are independent of each other; The third sub-channel (1121) of one of the second channels (112) is communicated with the liquid inlet end of the first sub-heat exchange channel (141) of the second heat exchange channel (22), and the second sub-channel (1112) is communicated with the liquid outlet end of the first sub-heat exchange channel (141) of the second heat exchange channel (22); The third sub-channel (1121) of another second channel (112) is connected to the liquid inlet end of the second sub-heat exchange channel (142) of the second heat exchange channel (22), and the fourth sub-channel (1122) is connected to the liquid outlet end of the second sub-heat exchange channel (142).

16. The heat exchange device according to claim 15, characterized in that: The first sub-heat exchange flow channels (141) include two first sub-heat exchange flow channels (141), which are respectively arranged at two ends of the second sub-heat exchange flow channel (142) and are interconnected.

17. The heat exchange device according to claim 16, characterized in that: The first heat exchange channels (14) include at least two, and the at least two first heat exchange channels (14) are arranged along a first direction; In two adjacent first heat exchange channels (14), two adjacent first sub-heat exchange channels (141) are interconnected, and two adjacent second sub-heat exchange channels (142) are interconnected.

18. The heat exchange device according to claim 17, characterized in that: The first sub-heat exchange flow channel (141) and the second sub-heat exchange flow channel (142) each include a plurality; A plurality of the first sub-heat exchange channels (141) are connected to one of the first channels (111) through a first converging channel (116); and a plurality of the second sub-heat exchange channels (142) are connected to another of the first channels (111) through a second converging channel (117).

19. The heat exchange device according to any one of claims 14 to 18, characterized in that: The heat exchange device further comprises a first adapter joint (150) and a second adapter joint (160), wherein the first channel (111) of the joint is connected to the first heat exchange channel (14) via the first adapter joint (150); and the second channel (112) of the joint is connected to the second heat exchange channel (22) via the second adapter joint (160).

20. The heat exchange device according to claim 19, characterized in that: Along a vertical direction from the first heat exchange component (10) to the second heat exchange component (20), the first adapter joint (150) and the second adapter joint (160) are arranged opposite to each other.

21. The heat exchange device according to claim 18, characterized in that The first heat exchange channel (14) and the second heat exchange channel (22) are symmetrically arranged; And / or, the first converging flow channel (116) of the first heat exchange element (10) and the first converging flow channel (116) of the second heat exchange element (20) are symmetrically arranged; And / or, the second converging flow channel (117) of the first heat exchange component (10) and the second converging flow channel (117) of the second heat exchange component (20) are symmetrically arranged.

22. The heat exchange device according to any one of claims 14 to 18, characterized in that: It also includes a crossbeam (15) extending along a second direction, wherein the crossbeam (15) is arranged between two adjacent first sub-heat exchange channels (141) of two adjacent first heat exchange channels (14); the second direction intersects with the first direction.

23. The heat exchange device according to any one of claims 1 to 3, characterized in that: A first heat conducting member (40) is provided between the first heat exchanging member (10) and the battery pack (30); and a second heat conducting member (50) is provided between the second heat exchanging member (20) and the battery pack (30).

24. A battery pack, characterized in that: It comprises a battery pack (30) and a heat exchange device according to any one of claims 1 to 23; the battery pack (30) is arranged in a receiving cavity of the heat exchange device and exchanges heat with the heat exchange device.

25. The battery pack according to claim 24, characterized in that: The battery pack (30) comprises a plurality of batteries arranged in sequence along a second direction; adjacent batteries are connected in series.

26. The battery pack according to claim 25, characterized in that: The battery packs (30) include at least two, and the at least two battery packs (30) are arranged at intervals along a first direction; adjacent battery packs (30) are connected in series.

27. The battery pack according to claim 26, characterized in that: Each of the battery packs comprises a first battery (31) and a second battery (32), wherein the first battery (31) and the second battery (32) are respectively located at ends of each of the battery packs in the second direction; One of the first batteries (31) serves as a positive terminal, and the other first battery (31) serves as a negative terminal; two adjacent second batteries (32) are connected via a connecting aluminum bar (190).

28. An electrical device, characterized in that: It comprises an electrical device and a battery pack according to any one of claims 24 to 27, wherein the battery pack is electrically connected to the electrical device and is used to provide electrical energy to the electrical device.

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