Heat exchange apparatus, battery pack, and electric device

Abstract

Embodiments of the present disclosure provide a heat exchange apparatus, a battery pack, and an electric device. The heat exchange apparatus comprises a first heat exchange member and a second heat exchange member, the first heat exchange member comprising a first accommodating cavity, and the second heat exchange member comprising a second accommodating cavity. The second heat exchange member is connected to the first heat exchange member and covers the first accommodating cavity. The second accommodating cavity and the first accommodating cavity define an accommodating cavity. The accommodating cavity is used for accommodating a battery pack, the first heat exchange member is used for being in contact with and exchanging heat with the bottom of the battery pack, and the second heat exchange member is used for being in contact with and exchanging heat with the top of the battery pack.

Description

Heat exchange device, battery pack and electric device

[0001] The present disclosure claims priority to the Chinese patent application No. 202411357872.3, filed on September 26, 2024, and entitled "Heat exchange device, battery pack and electric device", the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of battery, and in particular to a heat exchange device, a battery pack and an electric device. BACKGROUND

[0003] The battery pack is a device for converting chemical energy into electrical energy, which is widely used in the fields of new energy vehicles, energy storage power stations, etc. The battery pack usually includes a shell and a plurality of batteries arranged in the shell. A plurality of batteries will generate a large amount of heat when working, and a heat exchange device is usually arranged in the shell to exchange heat with the batteries.

[0004] However, the current heat exchange device is difficult to install and occupies a large space, resulting in complex assembly and low space utilization of the battery pack. SUMMARY

[0005] In view of the above problems, the present disclosure provides a heat exchange device, a battery pack and an electric device, which can simplify the assembly of the battery pack and improve the space utilization of the battery pack.

[0006] To achieve the above purpose, the present disclosure provides the following technical solutions:

[0007] The first aspect of the present disclosure provides a heat exchange device, which includes a first heat exchange member and a second heat exchange member, the first heat exchange member includes a first accommodating cavity, and the second heat exchange member includes a second accommodating cavity;

[0008] The second heat exchange member is connected with the first heat exchange member and covers the first accommodating cavity; wherein the second accommodating cavity and the first accommodating cavity form an accommodating cavity.

[0009] The accommodating cavity is used for accommodating a battery pack, the first heat exchange member is used for contacting and exchanging heat with the bottom of the battery pack, and the second heat exchange member is used for contacting and exchanging heat with the top of the battery pack.

[0010] In a possible implementation, a part of the first heat exchange member is recessed in a direction away from the second heat exchange member to form the first accommodating cavity;

[0011] A part of the second heat exchange member is recessed in a direction away from the first heat exchange member to form the second accommodating cavity.

[0012] The first accommodating cavity and the second accommodating cavity are opposite.

[0013] In a possible implementation, the first heat exchange member and the second heat exchange member each include a uniform temperature plate and a flow channel plate arranged in a stack, and a heat exchange flow channel is formed between the flow channel plate and the uniform temperature plate.

[0014] In a possible implementation, the first heat exchange member includes a first heat exchange flow channel, and the second heat exchange member includes a second heat exchange flow channel.

[0015] The heat exchange device further includes a first adjusting member and a second adjusting member, the first adjusting member is configured to open or block the first heat exchange flow channel, and the second adjusting member is configured to open or block the second heat exchange flow channel.

[0016] 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 in communication with the first heat exchange flow channel, and the second channel is in communication with the second heat exchange flow channel.

[0017] The first adjusting member and the second adjusting member are arranged on the joint, and the first adjusting member is configured to open or block the first channel, and the second adjusting member is configured to open or block the second channel.

[0018] In a possible implementation, the first adjusting member and the second adjusting member each include a driving portion and an adjusting portion connected with the driving portion; the adjusting portion of the first adjusting member is arranged in the first channel, and the adjusting portion of the second adjusting member is arranged in the second channel.

[0019] The adjusting portion has a first state and a second state; when the adjusting portion is in the first state, the corresponding first channel or second channel is blocked, and when the adjusting portion is in the second state, the corresponding first channel or second channel is opened.

[0020] The driving portion drives the corresponding adjusting portion to move, so that the adjusting portion switches between the first state and the second state.

[0021] In a possible implementation, the adjusting portion includes an adjusting plate; the shape of the adjusting plate matches the shape of the corresponding channel.

[0022] The driving portion drives the corresponding adjusting portion to rotate, so that the adjusting portion switches between the first state and the second state; when in the first state, the adjusting plate is perpendicular to the axis of the corresponding channel; and when in the second state, the adjusting plate is parallel to the axis of the corresponding channel.

[0023] In a possible implementation, the first adjusting member and the second adjusting member each further comprise a connecting portion, and an output shaft of the driving portion is connected with the corresponding adjusting portion through the corresponding connecting portion.

[0024] In a possible implementation, the joint comprises a first communication hole and a second communication hole, the first communication hole and the second communication hole extend along the axis direction of the output shaft of the corresponding driving portion, the first communication hole is in communication with the first channel, and the second communication hole is in communication with the second channel.

[0025] The connecting portion is arranged in the corresponding communication hole.

[0026] In a possible implementation, the joint further comprises two first limiting portions arranged at intervals, and the two first limiting portions have a preset included angle therebetween.

[0027] The connecting portion is provided with a second limiting portion, and the second limiting portion is used for limiting cooperation with one of the first limiting portions.

[0028] In a possible implementation, a controller and a temperature sensor are further included, the controller is arranged on the joint, and the temperature sensor is used for detecting the temperature of the battery pack.

[0029] The controller is electrically connected with the temperature sensor and the driving portion, and the controller controls the working state of the driving portion according to the temperature sensor.

[0030] In a possible implementation, the heat exchange device further comprises a shell, the shell is arranged on the joint, and is arranged around the controller, the first adjusting member and the second adjusting member.

[0031] In a possible implementation, the first channel and the second channel each comprise two, the first heat exchange flow channel and the second heat exchange flow channel each comprise a first sub-heat exchange flow channel and a second sub-heat exchange flow channel which are independent of each other, and the first sub-heat exchange flow channel is located at least one side of the second sub-heat exchange flow channel.

[0032] The first sub-heat exchange flow channel of the first heat exchange flow channel is in communication with one of the first channels, and the second sub-heat exchange flow channel is in communication with the other first channel.

[0033] The first sub-heat exchange flow channel of the second heat exchange flow channel is in communication with one of the second channels, and the second sub-heat exchange flow channel is in communication with the other second channel.

[0034] In a possible implementation, each first channel comprises a first sub-channel and a second sub-channel which are independent of each other.

[0035] The first sub-channel of one of the first channels is in communication with the liquid inlet end of the first sub-heat exchange flow channel, and the second sub-channel is in communication with the liquid outlet end of the first sub-heat exchange flow channel;

[0036] The first sub-channel of another of the first channels is in communication with the liquid inlet end of the second sub-heat exchange flow channel, and the second sub-channel is in communication with the liquid outlet end of the second sub-heat exchange flow channel.

[0037] In a possible implementation, each of the second channels comprises a third sub-channel and a fourth sub-channel which are independent of each other;

[0038] The third sub-channel of one of the second channels is in communication with the liquid inlet end of the first sub-heat exchange flow channel of the second heat exchange flow channel, and the second sub-channel is in communication with the liquid outlet end of the first sub-heat exchange flow channel of the second heat exchange flow channel;

[0039] The third sub-channel of another of the second channels is in communication with the liquid inlet end of the second sub-heat exchange flow channel of the second heat exchange flow channel, and the fourth sub-channel is in communication with the liquid outlet end of the second sub-heat exchange flow channel. In a possible implementation, the first sub-heat exchange flow channel comprises two, and the two first sub-heat exchange flow channels are arranged at two ends of the second sub-heat exchange flow channel and are in communication with each other.

[0040] In a possible implementation, the first heat exchange flow channel comprises at least two, and the at least two first heat exchange flow channels are arranged along a first direction;

[0041] In adjacent two of the first heat exchange flow channels, adjacent two of the first sub-heat exchange flow channels are in communication with each other, and adjacent two of the second sub-heat exchange flow channels are in communication with each other.

[0042] In a possible implementation, the first sub-heat exchange flow channel and the second sub-heat exchange flow channel each comprise a plurality of;

[0043] The plurality of first sub-heat exchange flow channels are in communication with one of the first channels through a first converging flow channel, and the plurality of second sub-heat exchange flow channels are in communication with another of the first channels through a second converging flow channel.

[0044] In a possible implementation, the first adapter connector and the second adapter connector are oppositely arranged along a vertical direction of the first heat exchange member pointing to the second heat exchange member.

[0045] In a possible implementation, the first heat exchange flow channel and the second heat exchange flow channel are symmetrically arranged;

[0046] And / or, the first converging flow passage of the first heat exchange component is symmetrically arranged with the first converging flow passage of the second heat exchange component.

[0047] And / or, the second converging flow passage of the first heat exchange component is symmetrically arranged with the second converging flow passage of the second heat exchange component.

[0048] In a possible implementation, the heat exchange device further comprises a first adapter joint and a second adapter joint, the first channel of the joint is in communication with the first heat exchange flow passage through the first adapter joint; the second channel of the joint is in communication with the second heat exchange flow passage through the second adapter joint.

[0049] In a possible implementation, a cross beam extending in a second direction is further included, the cross beam is arranged between two adjacent first sub heat exchange flow passages of two adjacent first heat exchange flow passages; the second direction intersects the first direction.

[0050] In a possible implementation, a first heat conduction component is arranged between the first heat exchange component and the battery pack; a second heat conduction component is arranged between the second heat exchange component and the battery pack.

[0051] A second aspect of the embodiments of the present disclosure provides a battery pack comprising a battery pack and the heat exchange device of the first aspect.

[0052] The battery pack is arranged in the accommodating cavity of the heat exchange device and exchanges heat with the heat exchange device.

[0053] In a possible implementation, the battery pack comprises a plurality of batteries arranged in sequence in a second direction; adjacent batteries are connected in series.

[0054] In a possible implementation, the battery pack comprises at least two battery packs, the at least two battery packs are arranged in a first direction with intervals; adjacent battery packs are connected in series.

[0055] In a possible implementation, each battery pack comprises a first battery and a second battery, the first battery and the second battery are respectively located at the end of each battery pack in the second direction.

[0056] 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 through a connecting aluminum bar.

[0057] A third aspect of the embodiments of the present disclosure provides a power utilization device comprising a power utilization device and the battery pack of the second aspect, the battery pack is electrically connected with the power utilization device, and is configured to provide electric energy for the power utilization device.

[0058] The heat exchange device, the battery pack and the electric equipment provided by the embodiments of the present disclosure have the following advantages. The heat exchange device comprises a first heat exchange member and a second heat exchange member. The second heat exchange member is arranged on the first heat exchange member and encloses a containing cavity with the first heat exchange member for containing a battery pack. In this way, the first heat exchange member and the second heat exchange member can be used as the upper and lower shells of the battery pack to protect the battery pack, and the heat exchange device does not need to be additionally installed, the occupied space of the heat exchange device is reduced, and the battery pack is simple to assemble and has high space utilization.

[0059] In addition, the first heat exchange member contacts and exchanges heat with the bottom of the battery pack, and the second heat exchange member contacts and exchanges heat with the top of the battery pack, so that double-sided heat exchange is achieved, and the heat exchange capacity of the heat exchange device is improved. The heat generated by the battery pack can be timely diffused, and the battery pack can maintain an appropriate temperature.

[0060] In addition to the technical problems solved by the embodiments of the present disclosure, the technical features constituting the technical solutions and the beneficial effects brought by the technical features, the other technical problems solved by the heat exchange device, the battery pack and the electric equipment provided by the embodiments of the present disclosure, the other technical features included in the technical solutions and the beneficial effects brought by the technical features will be further described in detail in the specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0061] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the drawings needed in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor.

[0062] FIG. 1 is an exploded schematic view of a battery pack provided by an embodiment of the present disclosure;

[0063] FIG. 2 is a schematic view of a first heat exchange member provided by an embodiment of the present disclosure;

[0064] FIG. 3 is a partial schematic view of the first heat exchange member provided by an embodiment of the present disclosure;

[0065] FIG. 4 is an enlarged schematic view of region A in FIG. 3;

[0066] FIG. 5 is a schematic view of a second heat exchange member provided by an embodiment of the present disclosure;

[0067] FIG. 6 is a bottom view of the second heat exchange member provided by an embodiment of the present disclosure;

[0068] FIG. 7 is an enlarged schematic view of region B in FIG. 5;

[0069] FIG. 8 is a schematic view of a joint according to an embodiment of the present disclosure;

[0070] FIG. 9 is a partial schematic view of a joint according to an embodiment of the present disclosure;

[0071] FIG. 10 is another partial schematic view of a joint according to an embodiment of the present disclosure;

[0072] FIG. 11 is a schematic view of an internal structure of a joint according to an embodiment of the present disclosure;

[0073] FIG. 12 is a schematic view of a structure of an adjusting member according to an embodiment of the present disclosure;

[0074] FIG. 13 is a layout view of a first limiting portion according to an embodiment of the present disclosure;

[0075] FIG. 14 is a schematic view of a cross section of a joint according to an embodiment of the present disclosure;

[0076] FIG. 15 is another schematic view of a cross section of a joint according to an embodiment of the present disclosure;

[0077] FIG. 16 is a schematic view of a joint and an adapter according to an embodiment of the present disclosure;

[0078] FIG. 17 is a layout view of a battery pack according to an embodiment of the present disclosure;

[0079] FIG. 18 is a schematic view of an electrical device according to an embodiment of the present disclosure.

[0080] Explanation of reference signs: 10: first heat exchange member; 11: first accommodating cavity; 12: uniform temperature plate; 13: flow channel plate; 14: first heat exchange flow channel; 15: cross beam; 16: expansion beam; 20: second heat exchange member; 21: second accommodating cavity; 22: second heat exchange flow channel; 23: lug; 30: battery pack; 31: first battery; 32: second battery; 40: first heat conduction member; 50: second heat conduction member; 60: protection plate; 70: buffer member; 80: distribution box; 90: first adjusting member; 91: driving part; 92: adjusting part; 921: adjusting plate; 93: connecting part; 94: second limiting part; 95: wire harness fixing column; 96: wire harness; 100: second adjusting member; 110: joint; 111: first channel; 1111: first sub-channel; 1112: second sub-channel; 112: second channel; 1121: third sub-channel; 1122: fourth sub-channel; 113: first communication hole; 114: second communication hole; 115: first limiting part; 116: first converging flow channel; 1161: main flow channel; 1162: first branch flow channel; 1163: second branch flow channel; 117: second converging flow channel; 118: total liquid inlet channel; 119: total liquid outlet channel; 120: controller; 130: connecting cable; 140: shell; 150: first adapter joint; 160: second adapter joint; 161: connecting pipe; 170: total positive aluminum row; 180: total negative aluminum row; 190: connecting aluminum row; 200: heat exchange device; 300: battery pack; 400: electric equipment; 401: electric device. DETAILED DESCRIPTION

[0081] To solve the problems in the background art, the heat exchange device, the battery pack and the electric equipment provided by the embodiments of the present disclosure are provided. The heat exchange device comprises a first heat exchange member and a second heat exchange member. The second heat exchange member is arranged on the first heat exchange member and encloses the first heat exchange member to form an accommodating cavity for accommodating a battery pack. In this way, the first heat exchange member and the second heat exchange member can be used as the upper and lower shells of the battery pack to protect the battery pack. In addition, the heat exchange device does not need to be additionally installed, and the occupied space of the heat exchange device is reduced. Therefore, the battery pack is simple to assemble and has high space utilization.

[0082] In addition, the embodiment can utilize the first heat exchange member to contact and exchange heat with the bottom of the battery pack, and utilize the second heat exchange member to contact and exchange heat with the top of the battery pack, to achieve double-sided heat exchange, and thus improve the heat exchange capacity of the heat exchange device, so that the heat generated by the battery pack can be timely diffused, and the battery pack can be ensured to maintain an appropriate temperature. The heat exchange device can timely diffuse the heat generated by the battery pack, on the one hand, reduces the limitation of the heat exchange device on the charging speed of the battery pack, so that the battery pack can be applied to a higher charging speed, and thus the charging efficiency of the battery pack is improved, and the charging time of the battery pack is shortened. On the other hand, the safety problems caused by overheating of the battery pack, such as thermal runaway, fire, etc., can be prevented, and thus the safety of the battery pack is improved.

[0083] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present disclosure more obvious and easy to understand, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all. Based on the embodiments in the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without creative labor are within the scope of protection of the present disclosure.

[0084] The embodiments of the present disclosure provide a heat exchange device, which can be used for heat exchange with a battery pack. It should be understood that the heat exchange mentioned in the embodiments can be understood as that the heat exchange device can cool and heat the battery pack. Specifically, the type of fluid circulating in the heat exchange device can be freely selected according to the environment of the battery pack. For example, when the heat exchange device is used to cool and heat the battery pack, the fluid can include refrigerant, CO2 or water.

[0085] Please refer to FIG. 1 to FIG. 7, the heat exchange device 200 includes a first heat exchange member 10 and a second heat exchange member 20, the first heat exchange member 10 includes a first accommodating cavity 11, and the second heat exchange member 20 includes a second accommodating cavity 21; the second heat exchange member 20 is connected with the first heat exchange member 10 and covers the first accommodating cavity 11; wherein the second accommodating cavity 21 and the first accommodating cavity 11 enclose an accommodating cavity.

[0086] The accommodating cavity is used for accommodating a battery pack 30, so that the first heat exchange member 10 and the second heat exchange member 20 can be used as the upper and lower shells of the battery pack to protect the battery pack, without the need to additionally install the heat exchange device 200, and the occupied space of the heat exchange device 200 is reduced, so that the battery pack 300 is simple to assemble and has high space utilization.

[0087] The first heat exchange member 10 is used to contact and exchange heat with the bottom of the battery pack 30, and the second heat exchange member 20 is used to contact and exchange heat with the top of the battery pack 30. In this way, the first heat exchange member 10 and the second heat exchange member 20 can be used to achieve double-sided heat exchange, thereby improving the heat exchange capacity of the heat exchange device 200, and the heat generated by the battery pack can be quickly dissipated, so as to ensure that the battery pack maintains an appropriate temperature. The first heat exchange member 10 and the second heat exchange member 20 are arranged at the bottom and the top of the battery pack 30, respectively, which can also make the temperature of the battery pack 30 more balanced in the direction perpendicular to the first heat exchange member 10, thereby improving the performance of the battery pack 30.

[0088] In addition, the heat exchange device 200 can quickly dissipate the heat generated by the battery pack, which can reduce the limitation of the charging speed of the battery pack on the heat exchange device 200, so that the battery pack can be charged at a higher 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 prevent safety problems caused by overheating of the battery pack, such as thermal runaway and fire, thereby improving the safety of the battery pack 300.

[0089] In order to improve the heat exchange capacity of the heat exchange device 200, the heat exchange device 200 provided in the embodiment further comprises a first heat conduction member 40 and a second heat conduction member 50. The first heat conduction member 40 is arranged between the first heat exchange member 10 and the battery pack 30, and the first heat conduction member 40 covers at least the entire bottom of the battery pack 30. The second heat conduction member 50 is arranged between the second heat exchange member 20 and the battery pack 30, and the second heat conduction member 50 covers at least the entire top of the battery pack 30. The first heat conduction member 40 and the second heat conduction member 50 include but are not limited to heat-conducting glue.

[0090] The first heat conduction member 40 and the second heat conduction member 50 can quickly conduct the heat generated by the battery pack 30 to the first heat exchange member 10 and the second heat exchange member 20, thereby improving the heat exchange effect of the heat exchange device 200.

[0091] In the example, the side of the first heat exchange member 10 away from the second heat exchange member 20 is provided with a protection member. In this way, the heat exchange device 200 can be protected by the protection member, and the heat exchange device 200 can be conveniently installed with the electrical equipment 400. The protection member can include a buffer member 70 and a protection plate 60. The buffer member 70 is arranged on the side of the first heat exchange member 10 away from the second heat exchange member 20, and the protection plate 60 is arranged on the side of the buffer member 70 away from the first heat exchange member 10.

[0092] It should be noted that the accommodating cavity is further provided with a distribution box 80 spaced from the battery pack 30, so as to facilitate the control of the charging and discharging function of the battery pack 30. The second heat exchange member 20 is provided with an inspection hole and a cover body covering the inspection hole. The inspection hole penetrates the second heat exchange member 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 200. In addition, the cover body is in sealing connection with the inspection hole, for example, sealing glue is arranged between the cover body and the inspection hole, so as to prevent external water vapor or impurities from entering the accommodating cavity, thereby improving the safety of the heat exchange device 200.

[0093] It should be noted that the first heat exchange member 10 and the second heat exchange member 20 can be an integral member or a split member. For example, a part of the first heat exchange member 10 is recessed in a direction away from the second heat exchange member 20 to form a first accommodating cavity 11; a part of the second heat exchange member 20 is recessed in a direction away from the first heat exchange member 10 to form a second accommodating cavity 21, wherein the first accommodating cavity 11 and the second accommodating cavity 21 are opposite. In this embodiment, the first heat exchange member 10 and the second heat exchange member 20 can be formed by stamping process, which can simplify the preparation process of the first heat exchange member 10 and the second heat exchange member 20, and improve the structural strength of the first heat exchange member 10 and the second heat exchange member 20.

[0094] In this embodiment, the first heat exchange member 10 and the second heat exchange member 20 have the same structure, and each include a uniform temperature plate 12 and a flow channel plate 13 arranged in layers, and the flow channel plate 13 and the uniform temperature plate 12 form a heat exchange flow channel.

[0095] In the preparation process of the first heat exchange member, the first accommodating cavity 11 can be formed on the flow channel plate 13 by stamping process, and then the heat exchange flow channel is formed on the bottom wall of the first accommodating cavity 11; the uniform temperature plate 12 is covered on the flow channel plate 13, and the uniform temperature plate 12 is fixed on the flow channel plate 13 by welding or bolts. It should be noted that the preparation process of the second heat exchange member is the same as that of the first heat exchange member, which will not be described in detail in this embodiment. In this embodiment, the heat exchange flow channel is formed on the flow channel plate 13 by stamping process, which can simplify the manufacturing process of the first heat exchange member 10 and the second heat exchange member 20, improve the production efficiency, and reduce the manufacturing cost.

[0096] In a possible implementation, referring to FIGS. 3, 4, 5 and 6, the first heat exchange member 10 includes a first heat exchange flow channel 14, and the second heat exchange member 20 includes a second heat exchange flow channel 22; the first heat exchange flow channel 14 and the second heat exchange flow channel 22 are used for circulating the fluid, thereby facilitating the heat exchange between the fluid and the battery pack 30.

[0097] The heat exchange device 200 further comprises a first adjusting member 90 and a second adjusting member 100, the first adjusting member 90 is used to open or block the first heat exchange flow channel 14, and the second adjusting member 100 is used to open or block the second heat exchange flow channel 22. In the embodiment, the first adjusting member 90 and the second adjusting member 100 are respectively used to open or block the first heat exchange flow channel 14 and the second heat exchange flow channel 22, so that the user can flexibly adjust the flow path of the fluid according to the actual needs, so as to realize the accurate control of the heat exchange process, and further optimize the heat exchange effect. In addition, the first adjusting member 90 and the second adjusting member 100 can also be used to close part of the flow channel when high-intensity heat exchange is not needed, so as to reduce the circulation amount of the fluid, thereby reducing the energy consumption and achieving the effect of energy saving.

[0098] It should be understood that the first adjusting member 90 can be directly arranged at the electromagnetic valve or the temperature control valve at the liquid inlet end of the first heat exchange flow channel 14. The first adjusting member 90 can also be an external component and is indirectly connected with the first heat exchange flow channel 14.

[0099] Exemplarily, the heat exchange device 200 further comprises a joint 110, the joint 110 is used to realize the communication between the first heat exchange flow channel 14 and the second heat exchange flow channel 22 and the external liquid supply equipment.

[0100] Please refer to FIGS. 8 to 11, the joint 110 comprises a first channel 111 and a second channel 112, wherein the first channel 111 is communicated with the first heat exchange flow channel 14, and the second channel 112 is communicated with the second heat exchange flow channel 22, so that the fluid can flow into the first heat exchange flow channel 14 through the first channel 111, and the fluid can flow into the second heat exchange flow channel 22 through the second channel 112.

[0101] The first adjusting member 90 and the second adjusting member 100 are arranged on the joint 110, 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. In the embodiment, the first adjusting member 90 and the second adjusting member 100 are arranged on the external joint 110, so that the fluid in the first heat exchange flow channel 14 and the second heat exchange flow channel 22 can be controlled, and the installation and maintenance of the heat exchange device 200 can be made more convenient; when the first adjusting member 90 and the second adjusting member 100 fail, the user only needs to replace or maintain the joint part, without the need to disassemble the first heat exchange member 10 and the second heat exchange member 20, thereby reducing the maintenance cost and time.

[0102] It should be understood that the fluid needs to flow in the first heat exchange flow channel 14 and the second heat exchange flow channel 22, and the first heat exchange flow channel 14 and the second heat exchange flow 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 by the embodiment both include a liquid inlet channel and a liquid outlet channel. For example, referring to FIGS. 10 and 11, the first channel 111 includes a first sub-channel 1111 and a second sub-channel 1112, the first sub-channel 1111 is in communication with the liquid inlet end of the first heat exchange flow channel 14, and the second sub-channel 1112 is in communication with the liquid outlet end of the first heat exchange flow 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 in communication with the liquid inlet end of the second heat exchange flow channel 22, and the fourth sub-channel 1122 is in communication with the liquid outlet end of the second heat exchange flow channel 22.

[0103] Referring to FIGS. 12, 14 and 15, in a possible implementation, the first adjusting member 90 and the second adjusting member 100 have the same structure, and both the first adjusting member 90 and the second adjusting member 100 include a driving part 91 and an adjusting part 92, the output shaft of the driving part 91 is connected with the adjusting part 92, and is used to drive the adjusting part 92 to move, so as to open or close the corresponding first channel 111 and second channel 112. That is, the adjusting part 92 of the first adjusting member 90 is arranged in the first channel 111, and the adjusting part 92 of the second adjusting member 100 is arranged in the second channel 112.

[0104] The adjusting part 92 has a first state and a second state, wherein the state shown in FIG. 14 is the first state, and the state shown in FIG. 15 is the second state. When the adjusting part 92 is in the first state, the corresponding first channel 111 and second channel 112 are blocked, and when the adjusting part 92 is in the second state, the corresponding first channel 111 and second channel 112 are opened. The driving part 91 drives the adjusting part 92 to move, so as to switch the adjusting part 92 between the first state and the second state.

[0105] In this way, the output shaft of the driving part 91 drives the corresponding adjusting part 92 to move, so as to accurately control the first channel 111 and the second channel 112, which is beneficial to the user to flexibly adjust the flow path of the fluid according to actual needs, and ensures the optimization of the heat exchange process.

[0106] It should be noted that the driving part 91 drives the adjusting part 92 to move, which can be understood as that the driving part 91 drives the adjusting part 92 to move along the axis direction of the output shaft of the driving part 91, or to rotate around the axis of the output shaft of the driving part 91. In order to describe the structure of the first adjusting member 90 and the second adjusting member 100 in detail, the following embodiments all take the first adjusting member 90 as an example.

[0107] In an example, the driving part 91 can be a micro-cylinder, and the adjusting part 92 can be an adjusting plate 921. The outer circumferential surface of the adjusting plate 921 matches the inner surface of the first channel 111, and the adjusting plate 921 is perpendicular to the axis of the first channel 111. The driving part 91 drives the adjusting part 92 to move up and down in a direction perpendicular to the first channel 111, so as to change the distance between the bottom surface of the adjusting part 92 and the bottom of the first channel 111, and further to switch the adjusting part 92 between the first state and the second state.

[0108] In another example, the driving part 91 includes a driving motor, and the adjusting part 92 includes an adjusting plate 921. The shape of the adjusting plate 921 matches the shape of the corresponding channel. The driving part 91 drives the corresponding adjusting part 92 to rotate, so as to switch the adjusting part 92 between the first state and the second state. When in the first state, the adjusting plate 921 is perpendicular to the axis of the corresponding channel. When in the second state, the adjusting plate 921 is parallel to the axis of the corresponding channel.

[0109] Taking the first adjusting member 90 and the first channel 111 as an example, please continue to refer to FIG. 14. When in the first state, the adjusting plate 921 is perpendicular to the axis of the first channel 111, and the outer circumferential surface of the adjusting plate 921 is arranged in close contact with the inner wall of the first channel 111, so as to block the first channel 111. Please continue to refer to FIG. 15. When in the second state, the adjusting plate 921 is parallel to the axis of the first channel 111, so as to open the first channel 111.

[0110] It should be noted that the output shaft of the driving part 91 can be directly connected with the adjusting part 92, or indirectly connected with the adjusting part 92. For example, please continue to refer to FIG. 12. The first adjusting member 90 and the second adjusting member 100 each further include a connecting part 93. The output shaft of the driving part 91 is connected with the corresponding adjusting part 92 through the corresponding connecting part 93. In this way, the installation of the first adjusting member 90 and the second adjusting member 100 with the joint 110 can be facilitated, and it is ensured that the driving part 91 can be exposed outside the joint 110. The connecting part 93 can be a connecting rod.

[0111] In a possible implementation, please continue to refer to FIG. 10. The joint 110 includes a first communication hole 113 and a second communication hole 114. The first communication hole 113 and the second communication hole 114 extend along the axis direction of the output shaft of the corresponding driving part 91. The first communication hole 113 is in communication with the first channel 111, and the second communication hole 114 is in communication with the second channel 112. Taking the orientation shown in FIG. 10 as an example, the first communication hole 113 and the second communication hole 114 extend in the vertical direction.

[0112] The connecting portion 93 is arranged in the corresponding communication hole, and part of the connecting portion 93 extends to the outside of the communication hole. In other words, the connecting portion 93 of the first adjusting member 90 is arranged in the first communication hole 113, and the connecting portion 93 of the second adjusting member 100 is arranged in the second communication hole 114. In this way, the installation of the first adjusting member 90 and the second adjusting member 100 is facilitated, and the connecting portion 93 is provided with a rotating space, thereby improving the stability of the first adjusting member 90 and the second adjusting member 100.

[0113] Please refer to FIG. 9 and FIG. 13, the joint 110 further comprises two first limiting portions 115 arranged at intervals, and the two first limiting portions 115 have a preset included angle therebetween; for example, the preset included angle is 90°.

[0114] The connecting portion 93 is provided with a second limiting portion 94; the second limiting portion 94 is used for limiting cooperation with one of the first limiting portions 115. The two first limiting portions 115 are used for defining a limiting area, so as to ensure that the second limiting portion 94 can only move in the limiting area, thereby realizing accurate control of the state of the fluid.

[0115] In order to further accurately control the operation of the driving portion 91, the heat exchange device 200 further comprises a controller 120 and a temperature sensor (not shown in the figure), the controller 120 is arranged on the joint 110, and the temperature sensor is used for detecting the temperature of the battery pack 30; the controller 120 is electrically connected with the temperature sensor and the driving portion 91, and the controller 120 controls the working state of the driving portion 91 according to the temperature sensor.

[0116] It should be noted that the number of temperature sensors can be multiple, and the temperature of each battery and each position of the battery pack 30 is monitored by the multiple temperature sensors, and the temperature is transmitted to the controller 120, and the controller 120 can control the working state of the driving portion 91, thereby controlling the flow of the fluid in the first heat exchange flow channel 14 and the second heat exchange flow channel 22, and realizing accurate control of the temperature of the battery pack 30.

[0117] In addition, the controller 120 can be a separate component, and the controller can directly form an action instruction. The controller can also be connected with a battery management system (Battery Management System, BMS) of the battery pack 300. For example, please refer to FIG. 8 and FIG. 9, the controller 120 is electrically connected with the battery management system through a connecting cable 130. The driving portion 91 is provided with a wire harness fixing column 95, and the wire harness fixing column 95 is electrically connected with the controller 120 through a wire harness 96.

[0118] In a possible implementation, the heat exchange device 200 further comprises a shell 140, which is arranged on the joint 110 and covers the controller 120, the first adjusting member 90 and the second adjusting member 100. In this way, the controller 120, the first adjusting member 90 and the second adjusting member 100 can be protected, and the safety of the above components is improved.

[0119] It should be noted that the battery pack 30 comprises at least two heat generation areas with different heat generation amounts, wherein the heat generation amount of the area opposite to the pole of the battery pack 30 is relatively large, and the area is usually located at both ends of the battery pack 30 in the first direction; the heat generation amount of the other area of the battery pack 30 except the area opposite to the pole is relatively small, and the area is usually the middle area of the battery pack 30.

[0120] Referring to FIGS. 3 to 5, the first heat exchange flow channel 14 and the second heat exchange flow channel 22 provided by the embodiment of the present disclosure each comprise a first sub heat exchange flow channel 141 and a second sub heat exchange flow channel 142 which are independent of each other, and the first sub heat exchange flow channel 141 is located at least one side of the second sub heat exchange flow channel 142.

[0121] The number of the first channels 111 and the second channels 112 can be two; the first sub heat exchange flow channel 141 of the first heat exchange flow channel 14 communicates with one of the first channels 111, and the second sub heat exchange flow channel 142 communicates with the other first channel 111.

[0122] The first sub heat exchange flow channel 141 of the second heat exchange flow channel 22 communicates with one of the second channels 112, and the second sub heat exchange flow channel 142 communicates with the other second channel 112.

[0123] In this way, the first sub heat exchange flow channel 141 and the second sub heat exchange flow channel 142 of the first heat exchange member 10 have independent first channels 111, and the first sub heat exchange flow channel 141 and the second sub heat exchange flow channel 142 of the second heat exchange member 20 have independent second channels 112. In this way, the first sub heat exchange flow channel 141 and the second sub heat exchange flow channel 142 of the first heat exchange member 10 and the first sub heat exchange flow channel 141 and the second sub heat exchange flow channel 142 of the second heat exchange member 20 can be controlled independently, different flow strategies can be adopted, and the flow of the first sub heat exchange flow channel 141 and the second sub heat exchange flow channel 142 can be distributed according to the heat exchange amount required by different heat generation areas of the battery pack 30, so that the first sub heat exchange flow channel 141 and the second sub heat exchange flow channel 142 have different heat exchange capacities, thereby reducing the temperature difference of different heat generation areas of the battery pack 30.

[0124] It should be noted that when the first heat exchange channel 14 includes the first sub-heat exchange channel 141 and the second sub-heat exchange channel 142 which are independent of each other, and the first sub-heat exchange channel 141 and the second sub-heat exchange channel 142 each have a liquid inlet end and a liquid outlet end, therefore, each first channel 111 generally needs to include two. In order to facilitate a detailed description of the flow direction of the fluid in the first heat exchange channel 14, each first channel 111 is defined 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.

[0125] The first sub-channel 1111 of one of the first channels 111 communicates with the liquid inlet end of the first sub-heat exchange channel 141, and the second sub-channel 1112 communicates with the liquid outlet end of the first sub-heat exchange channel 141; the first sub-channel 1111 of the other first channel 111 communicates with the liquid inlet end of the second sub-heat exchange channel 142, and the second sub-channel 1112 communicates with the liquid outlet end of the second sub-heat exchange channel 142. At the same time, the number of first adjusting members 90 is two, and one first adjusting member 90 is arranged in each first sub-channel 1111.

[0126] Please continue to refer to FIG. 10, each second channel 112 includes a third sub-channel 1121 and a fourth sub-channel 1122 which are independent of each other. That is, the number of third sub-channels 1121 is two, and the number of fourth sub-channels 1122 is two.

[0127] Please refer to FIG. 7 and FIG. 10, the third sub-channel 1121 of one of the second channels 112 communicates 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 communicates with the liquid outlet end of the first sub-heat exchange channel 141 of the second heat exchange channel 22.

[0128] The third sub-channel 1121 of the other second channel 112 communicates with 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 communicates with the liquid outlet end of the second sub-heat exchange channel 142. At the same time, the number of second adjusting members 100 is also two, and one second adjusting member 100 is arranged in each third sub-channel 1121.

[0129] In this way, by arranging the first heat exchange channel 14 and the second heat exchange channel 22, the number of first channels 111, second channels 112, first adjusting members 90 and second adjusting members 100 can be reasonably arranged, and the independent control of the first heat exchange channel 14 and the second heat exchange channel 22 can be realized, thereby ensuring the temperature uniformity of the battery module.

[0130] In the embodiment, the number of the first sub heat exchange channels 141 can be one or two. In an example, the number of the first sub heat exchange channels 141 is one, and the first sub heat exchange channel 141 can be arranged at one side of the second sub heat exchange channel 142. In another example, the number of the first sub heat exchange channels 141 is two, and the two first sub heat exchange channels 141 are arranged at two ends of the second sub heat exchange channel 142 and communicate with each other. In this way, the two first sub heat exchange channels 141 enclose a U-shaped structure, and the second sub heat exchange channel 142 is arranged in the U-shaped cavity.

[0131] 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 for cooling the low heat generation area can not be started to cool or be delayed to start to cool during use, so as to reduce the temperature difference of the battery pack 30 and save power consumption.

[0132] In addition, the two first sub heat exchange channels 141 are connected in series, which can reduce the number of the first sub channels 1111, and thus can simplify the heat exchange device 200 and reduce the manufacturing cost.

[0133] In a possible implementation, the first heat exchange channel 14 includes at least two first heat exchange channels 14 arranged along a first direction; in the two adjacent first heat exchange channels 14, the two adjacent first sub heat exchange channels 141 communicate with each other, and the two adjacent second sub heat exchange channels 142 communicate with each other. The first direction can be the Y direction in FIG. 3, and the second direction can be the X direction in FIG. 3.

[0134] In the at least two first heat exchange channels, the plurality of first sub heat exchange channels 141 share one liquid inlet end, and the plurality of second sub heat exchange channels 142 share one liquid inlet end. In this way, the number of the first sub channels 1111 can be reduced, the structure of the flow channel is simplified, the complexity and manufacturing difficulty of the flow channel are reduced, and the production cost is reduced.

[0135] It should be noted that the number of the first sub heat exchange flow channels 141 and the second sub heat exchange flow channels 142 can be one or multiple. Multiple first sub heat exchange flow channels 141 are communicated with one of the first channels 111 through the first converging flow channel 116; multiple second sub heat exchange flow channels 142 are communicated with another first channel 111 through the second converging flow channel. The arrangement of multiple sub heat exchange flow channels can increase the heat exchange area of the heat exchange device 200, thereby improving the heat exchange efficiency of the heat exchange device 200; and the parallel design of multiple sub heat exchange flow channels can effectively reduce the pressure loss of the fluid in the flow process. In addition, through the design of the converging flow channel, the fluid can be more evenly distributed to each sub heat exchange flow channel, avoiding the situation that the fluid flow rate is too fast or too slow in some flow channels, thereby improving the stability and efficiency of the heat exchange device 200.

[0136] The first converging flow channel 116 can include a main flow channel 1161, a first branch flow channel 1162 and a second branch flow channel 1163, one end of the main flow channel 1161 is communicated with one of the first channels 111, one end of the main flow channel 1161 is communicated with the first branch flow channel 1162 and the second branch flow channel 1163 respectively, the other end of the first branch flow channel 1162 and the other end of the second branch flow channel 1163 can be communicated with multiple first sub heat exchange flow channels 141. It should be noted that the other end of the first branch flow channel 1162 can be communicated with one or multiple first sub heat exchange flow channels 141, for example, the other end of the first branch flow channel 1162 is communicated with two first sub heat exchange flow channels 141. The other end of the second branch flow channel 1163 can be communicated with one or multiple first sub heat exchange flow channels 141, for example, the other end of the second branch flow channel 1163 is communicated with two first sub heat exchange flow channels 141.

[0137] The layout mode of the second converging flow channel 117 can be the same as that of the first converging flow channel 116, which will not be described in detail herein.

[0138] In addition, since the fluid needs to circulate in the first sub heat exchange flow channel 141 and the second sub heat exchange flow channel 142, the number of the first converging flow channel 116 and the second converging flow channel 117 is two, and correspondingly, the number of the first sub channel 1111 and the second sub channel 1112 is also two: one of the first converging flow channels 116 is communicated with the liquid inlet end of the first sub heat exchange flow channel 141 and one of the first sub channels 1111, and the other of the first converging flow channels 116 is communicated with the liquid outlet end of the first sub heat exchange flow channel 141 and one of the second sub channels 1112.

[0139] One of the second converging flow channels 117 is communicated with the liquid inlet end of the second sub heat exchange flow channel 142 and the other of the first sub channels 1111, and the other of the second converging flow channels 117 is communicated with the liquid outlet end of the second sub heat exchange flow channel 142 and the other of the second sub channels 1112.

[0140] It should be noted that the first heat exchange flow channel 14 and the first channel 111 can be directly connected or indirectly connected, and the second heat exchange flow channel 22 and the second channel 112 can be directly connected or indirectly connected.

[0141] Please refer to FIG. 16, the heat exchange device 200 further comprises a first adapter joint 150 and a second adapter joint 160, the first channel 111 of the joint 110 is communicated with the first heat exchange flow channel 14 through the first adapter joint 150, and the second channel 112 of the joint 110 is communicated with the second heat exchange flow channel 22 through the second adapter joint 160.

[0142] The first channel 111 of the joint 110 is connected with the first adapter joint 150 through a connecting pipe 161, and the second channel 112 of the joint 110 is connected with the second adapter joint 160 through the connecting pipe 161.

[0143] In the embodiment, two first sub-channels 1111 are used as the liquid inlet flow channels of the first heat exchange flow channel 14, and two third sub-channels 1121 are used as the liquid inlet flow channels of the second heat exchange flow channel 22; two second sub-channels 1112 are used as the liquid outlet flow channels of the first heat exchange flow channel 14, and two fourth sub-channels 1122 are used as the liquid outlet flow channels of the second heat exchange flow channel 22.

[0144] The two first sub-channels 1111 and the two third sub-channels 1121 are arranged on one side of the joint 110, and the two second sub-channels 1112 and the two fourth sub-channels 1122 are arranged on the other side of the joint 110, so as to facilitate the layout of the plurality of connecting pipes 161, which can shorten the length of the plurality of connecting pipes 161 and improve the layout neatness of the plurality of connecting pipes 161.

[0145] 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, and the two second sub-channels 1112 and the two fourth sub-channels 1122 with the liquid storage equipment outside, please refer to FIG. 11, the joint 110 provided in the 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 communicated with the two first sub-channels 1111 and the two third sub-channels 1121 respectively, and the total liquid outlet channel 119 is communicated with the two second sub-channels 1112 and the two fourth sub-channels 1122 respectively.

[0146] In a possible implementation, please refer to FIG. 1, the first adapter joint 150 and the second adapter joint 160 are oppositely arranged along a vertical direction of the first heat exchange element 10 pointing to the second heat exchange element 20. For example, the first adapter joint 150 is arranged on the first heat exchange element 10, the second adapter joint 160 is arranged on the second heat exchange element 20, and the first adapter joint 150 is located directly above the second adapter joint 160. In this way, the layout of the joint, the adapter joint, the first heat exchange flow channel 14 and the second heat exchange flow channel 22 can be facilitated, and the layout complexity of the connecting pipe can be simplified.

[0147] In a possible implementation, the first heat exchange flow channel 14 and the second heat exchange flow 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 element 10 and the second converging flow channel 117 of the second heat exchange element 20 are symmetrically arranged. In this way, the fluid can be uniformly distributed 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 200 and reducing the phenomenon of local overheating or overcooling. In addition, the preparation process of the heat exchange device 200 can be simplified, and the structural stability of the heat exchange device 200 can be improved.

[0148] In a possible implementation, please refer to FIG. 2, the first heat exchange element 10 further includes a cross beam 15 extending along a second direction and arranged between two adjacent first sub heat exchange flow channels 141 of two adjacent first heat exchange flow channels 14. In this way, the cross beam 15 can divide the first accommodating cavity 11 into at least two sub accommodating cavities, each of which is provided with a first heat exchange flow channel 14, thereby enabling heat exchange with at least two battery packs 30 and improving the heat exchange efficiency of the heat exchange device 200.

[0149] It should be noted that, in the second direction, both ends of the cross beam 15 are provided with expansion beams 16 extending along the first direction, which can prevent the battery pack 30 from expanding in the first direction and reduce the deformation ability of the battery pack 30.

[0150] The second heat exchange element 20 further includes a plurality of lugs 23 arranged on the top surface away from the first heat exchange element 10 and arranged in sequence along the first direction. For example, the number of lugs 23 is four. In this way, the heat exchange device 200 can be conveniently lifted.

[0151] Please refer to FIG. 1, the present disclosure further provides a battery pack 300 including a battery pack 30 and the heat exchange device 200 described in any of the above embodiments, wherein the battery pack 30 is arranged in the accommodating cavity of the heat exchange device 200 and performs heat exchange with the heat exchange device 200.

[0152] Since the battery pack 300 in the embodiment includes the heat exchange device 200 described in any of the above embodiments, the battery pack 300 has the structure and advantages of the heat exchange device 200, and thus the description of the structure and advantages of the heat exchange device 200 is not repeated here.

[0153] Referring to FIG. 17, the battery pack includes a plurality of batteries arranged in sequence in the second direction; adjacent batteries are connected in series. For example, the positive and negative poles of two adjacent batteries are opposite to each other, so that the two adjacent batteries are connected by a connecting sheet to achieve the series connection of the adjacent batteries.

[0154] The number of the battery packs 30 can be one or at least two. For example, the battery pack 30 includes at least two battery packs 30 arranged in the first direction at intervals, and adjacent battery packs are connected in series. In this way, a relatively simple high-voltage loop design can be achieved.

[0155] For example, each battery pack 30 includes a first battery and a second battery, and the first battery and the second battery are located at the end of each battery pack 30 in the second direction. One of the first batteries 31 is connected to the positive terminal of the electric device 401 through the positive aluminum bus 170, and the other first battery 31 is connected to the negative terminal of the electric device through the negative aluminum bus 180; the two adjacent second batteries 32 are connected by the connecting aluminum bus 190. In this way, the high-voltage loop of the battery pack is U-shaped, which simplifies the design of the high-voltage loop.

[0156] Referring to FIG. 18, the disclosure also provides an electric device 400, which includes the electric device 401 and the battery pack 300 described in any of the above embodiments. The battery pack 300 is electrically connected to the electric device 401 to provide power for the electric device 401.

[0157] The electric device 400 in the embodiment of the disclosure can be a vehicle, for example, the vehicle can be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile can be a pure electric vehicle, a hybrid electric vehicle, or a range extended vehicle. Correspondingly, the electric device can be a driving mechanism of the vehicle, or a control system of the vehicle.

[0158] In addition, the electric device 400 can also be other energy storage devices, such as a mobile phone, a portable device, a notebook computer, an electric toy, an electric tool, a ship, and a spacecraft. The spacecraft can include an airplane, a rocket, a space shuttle, or a spacecraft.

[0159] Since the electric device 400 in the embodiment includes the battery pack 300 described in any of the above embodiments, the electric device 400 includes the structure and advantages of the battery pack 300, and thus the description of the structure and advantages of the battery pack 300 is not repeated here.

[0160] The embodiments or examples in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between embodiments can be referred to each other.

[0161] It should be noted that the "one embodiment", "an embodiment", "exemplary embodiment", "some embodiments", and the like in the specification indicate that the described embodiment can include a particular feature, structure, or characteristic, but not necessarily every embodiment. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is within the knowledge of those skilled in the art to implement such a feature, structure, or characteristic in connection with other embodiments whether explicitly described or not.

[0162] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the disclosure, and not to limit them; although the disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the disclosure.

Claims

1. A heat exchange device (200), characterized in that, The heat exchange device (200) comprises a first heat exchange element (10) and a second heat exchange element (20), the first heat exchange element (10) comprises a first accommodating cavity (11), and the second heat exchange element (20) comprises a second accommodating cavity (21); The second heat exchange element (20) is connected with the first heat exchange element (10) and covers the first accommodating cavity (11); wherein the second accommodating cavity (21) and the first accommodating cavity (11) are in communication with each other and are enclosed to form an accommodating cavity; The accommodating cavity is used for accommodating a battery pack (30), the first heat exchange element (10) is used for heat exchange with the bottom of the battery pack (30), and the second heat exchange element (20) is used for heat exchange with the top of the battery pack (30).

2. The heat exchange device (200) according to claim 1, characterized in that Part 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); Part of the second heat exchange element (20) is recessed in a direction away from the first heat exchange element (10) to form the second accommodating cavity (21); and the first accommodating cavity (11) and the second accommodating cavity (21) are opposite.

3. The heat exchange device (200) according to claim 1, characterized in that The first heat exchange element (10) and the second heat exchange element (20) each comprise a uniform temperature plate (12) and a flow channel plate (13) arranged in a stack, and a heat exchange flow channel is formed between the flow channel plate (13) and the uniform temperature plate (12).

4. The heat exchange device (200) according to any one of claims 1-3, characterized in that The first heat exchange element (10) comprises a first heat exchange flow channel (14), and the second heat exchange element (20) comprises a second heat exchange flow channel (22). The heat exchange device (200) further comprises a first adjusting element (90) and a second adjusting element (100), the first adjusting element (90) is used for opening or blocking the first heat exchange flow channel (14), and the second adjusting element (100) is used for opening or blocking the second heat exchange flow channel (22).

5. The heat exchange device (200) according to claim 4, characterized in that The heat exchange device (200) 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 flow channel (14), and the second channel (112) is in communication with the second heat exchange flow channel (22); The first adjusting element (90) and the second adjusting element (100) are arranged on the joint, the first adjusting element (90) is used for opening or blocking the first channel (111), and the second adjusting element (100) is used for opening or blocking the second channel (112).

6. The heat exchange device (200) according to claim 5, characterized in that The first adjusting element (90) and the second adjusting element (100) each comprise a driving part (91) and an adjusting part (92) connected with the driving part (91); the adjusting part (92) of the first adjusting element (90) is arranged in the first channel (111), and the adjusting part (92) of the second adjusting element (100) is arranged in the second channel (112); The adjusting part (92) has a first state and a second state, when the adjusting part (92) is in the first state, the corresponding first channel (111) or the second channel (112) is blocked, when the adjusting part (92) is in the second state, the corresponding first channel (111) or the second channel (112) is opened; The driving part (91) drives the corresponding adjusting part (92) to move, so that the adjusting part (92) switches between the first state and the second state.

7. The heat exchange device (200) according to claim 6, characterized in that The adjusting part (92) comprises an adjusting plate (921), and the shape of the adjusting plate (921) matches the shape of the corresponding channel; The driving part (91) drives the corresponding adjusting part (92) to rotate, so that the adjusting part (92) switches between the first state and the second state; wherein, when in the first state, the adjusting plate (921) is perpendicular to the axis of the corresponding channel; when in the second state, the adjusting plate (921) is parallel to the axis of the corresponding channel.

8. The heat exchange device (200) according to claim 7, characterized in that The first adjusting part (90) and the second adjusting part (100) further comprise a connecting part (93), and the output shaft of the driving part (91) is connected with the corresponding adjusting part (92) through the corresponding connecting part (93).

9. The heat exchange device (200) according to claim 8, characterized in that The joint (110) comprises a first communication hole (113) and a second communication hole (114), the first communication hole (113) and the second communication hole (114) extend along the axis direction of the output shaft of the corresponding driving part (91), the first communication hole (113) communicates with the first channel (111), and the second communication hole (114) communicates with the second channel (112); The connecting part (93) is arranged in the corresponding communication hole.

10. The heat exchange device (200) according to claim 8, characterized in that The joint (110) further comprises two first limiting parts (115) arranged at intervals, and the two first limiting parts (115) have a preset included angle therebetween; The connecting part (93) is provided with a second limiting part (94); the second limiting part (94) is used for limiting cooperation with one of the first limiting parts (115).

11. Heat exchange device (200) according to any one of claims 6-10, characterized in that Further comprising a controller (120) and a temperature sensor, the controller (120) is arranged on the joint (110), and the temperature sensor is used for detecting the temperature of the battery pack (30); The controller (120) is electrically connected with the temperature sensor and the driving part (91), and the controller (120) controls the working state of the driving part (91) according to the temperature sensor.

12. The heat exchange device (200) according to claim 11, characterized in that The heat exchange device further comprises a shell (140), the shell is arranged on the joint (110) and is sleeved on the controller (120), the first adjusting part (90) and the second adjusting part (100).

13. The heat exchange device (200) according to any one of claims 5-10, characterized in that The first channel (111) and the second channel (112) each include two; the first heat exchange flow channel (14) and the second heat exchange flow channel (22) include a first sub-heat exchange flow channel (141) and a second sub-heat exchange flow channel (142) which are independent of each other, and the first sub-heat exchange flow channel (141) is located at least one side of the second sub-heat exchange flow channel (142); The first sub-heat exchange flow channel (141) of the first heat exchange flow channel (14) is communicated with one of the first channels (111), and the second sub-heat exchange flow channel (142) is communicated with another first channel (111); The first sub-heat exchange flow channel (141) of the second heat exchange flow channel (22) is communicated with one of the second channels (112), and the second sub-heat exchange flow channel (142) is communicated with another second channel (112).

14. The heat exchange device (200) according to claim 13, characterized in that Each of the first channels (111) includes a first sub-channel (1111) and a second sub-channel (1112) which are independent of each other; The first sub-channel (1111) of one of the first channels (111) is communicated with the liquid inlet end of the first sub-heat exchange flow channel (141), and the second sub-channel (1112) is communicated with the liquid outlet end of the first sub-heat exchange flow channel (141); The first sub-channel (1111) of another first channel (111) is communicated with the liquid inlet end of the second sub-heat exchange flow channel (142), and the second sub-channel (1112) is communicated with the liquid outlet end of the second sub-heat exchange flow channel (142).

15. The heat exchange device (200) 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) which 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 flow channel (141) of the second heat exchange flow channel (22), and the second sub-channel (1112) is communicated with the liquid outlet end of the first sub-heat exchange flow channel (141) of the second heat exchange flow channel (22); The third sub-channel (1121) of another second channel (112) is communicated with the liquid inlet end of the second sub-heat exchange flow channel (142) of the second heat exchange flow channel (22), and the fourth sub-channel (1122) is communicated with the liquid outlet end of the second sub-heat exchange flow channel (142).

16. The heat exchange device (200) according to claim 15, characterized in that The first sub-heat exchange flow channel (141) includes two, and the two first sub-heat exchange flow channels (141) are respectively arranged at two ends of the second sub-heat exchange flow channel (142) and are communicated with each other.

17. The heat exchange device (200) according to claim 16, characterized in that The first heat exchange flow channel (14) includes at least two, and at least two first heat exchange flow channels (14) are arranged along a first direction; In adjacent two first heat exchange flow channels (14), adjacent two first sub-heat exchange flow channels (141) are communicated with each other, and adjacent two second sub-heat exchange flow channels (142) are communicated with each other.

18. The heat exchange device (200) 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 of; A plurality of the first sub heat exchange channels (141) are communicated with one of the first channels (111) through a first collecting channel (116); a plurality of the second sub heat exchange channels (142) are communicated with another of the first channels (111) through a second collecting channel (117).

19. The heat exchange device (200) according to any one of claims 14-18, characterized in that The heat exchange device further comprises a first adapter joint (150) and a second adapter joint (160), the first channel (111) of the joint is communicated with the first heat exchange channel (14) through the first adapter joint (150); the second channel (112) of the joint is communicated with the second heat exchange channel (22) through the second adapter joint (160).

20. The heat exchange device (200) according to claim 19, characterized in that The first adapter joint (150) and the second adapter joint (160) are oppositely arranged along the vertical direction of the first heat exchange member (10) pointing to the second heat exchange member (20).

21. The heat exchange device (200) 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 collecting channel (116) of the first heat exchange member (10) and the first collecting channel (116) of the second heat exchange member (20) are symmetrically arranged; And / or, the second collecting channel (117) of the first heat exchange member (10) and the second collecting channel (117) of the second heat exchange member (20) are symmetrically arranged.

22. The heat exchange device (200) according to any one of claims 14-18, characterized in that Further comprising a cross beam (15) extending along a second direction, the cross beam (15) is arranged between two adjacent first sub heat exchange channels (141) of two adjacent first heat exchange channels (14); the second direction intersects the first direction.

23. The heat exchange device (200) according to any one of claims 1-3, characterized in that, A first heat conduction member (40) is arranged between the first heat exchange member (10) and the battery pack (30); a second heat conduction member (50) is arranged between the second heat exchange member (20) and the battery pack (30).

24. A battery pack (300) characterized by, The battery pack (30) is arranged in the accommodating cavity of the heat exchange device (200) and exchanges heat with the heat exchange device (200).

25. The battery pack (300) according to claim 24, characterized by 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 (300) according to claim 25, characterized by The battery pack (30) comprises at least two battery packs (30) arranged in a first direction; adjacent battery packs (30) are connected in series.

27. The battery pack (300) according to claim 26, characterized by Each battery pack (30) comprises a first battery (31) and a second battery (32), the first battery (31) and the second battery (32) are respectively located at the end of each battery pack (30) 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 by a connecting aluminum bar (190).

28. An electrical device (400), characterized by The battery pack (300) is electrically connected with the electric device (401) and is used for providing electric energy for the electric device (401).

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