Heat exchange device and battery pack

Abstract

The utility model relates to a heat exchange device and a battery pack. The heat exchange device is used for the battery pack box body, the battery pack box body comprises a first exchange flow channel, and the heat exchange device comprises a fixing assembly. The fixing assembly comprises a fixing unit, the fixing unit comprises a heat exchange part and a second exchange flow channel, the heat exchange part is communicated with the first exchange flow channel of the battery pack box body through the second exchange flow channel, and the extension direction of the first exchange flow channel intersects with the extension direction of the second exchange flow channel. The universality of the battery pack can be improved.

Description

Technical Field

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

[0002] Battery monomers are widely used in electronic devices, such as mobile phones, laptop computers, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes and electric tools, etc.

[0003] In the development of battery technology, how to improve the versatility of batteries has always been a research direction in battery technology. Utility Model Content

[0004] The heat exchange device and battery pack provided in the embodiments of the present application can improve the versatility of the battery pack.

[0005] On the one hand, according to an embodiment of the present application, a heat exchange device is proposed, the heat exchange device is used for a battery pack box, the battery pack box includes a first exchange flow channel, and the heat exchange device includes:

[0006] The fixing assembly includes a fixing unit, which includes a heat exchange part and a second exchange channel. The heat exchange part is connected to the first exchange channel of the battery pack body through the second exchange channel, and the extension direction of the first exchange channel intersects with the extension direction of the second exchange channel.

[0007] According to one aspect of an embodiment of the present application, the fixing assembly includes a first fixing unit and a second fixing unit, and the first fixing unit and the second fixing unit are respectively arranged on two sides of the battery pack body along the extension direction of the first exchange channel.

[0008] According to one aspect of the embodiment of the present application, the heat exchange portion includes a first sub-portion, the first fixing unit includes the first sub-portion, and the first sub-portion is configured to communicate with a medium supply source.

[0009] According to one aspect of the embodiment of the present application, the heat exchange part further includes a second subsection, the second fixing unit includes the second subsection, and the second subsection includes a temperature control device.

[0010] According to one aspect of the embodiment of the present application, one second exchange flow channel is correspondingly connected to at least one first exchange flow channel.

[0011] According to one aspect of an embodiment of the present application, the first exchange flow channel includes a first main exchange flow channel, the second exchange flow channel includes a first auxiliary exchange flow channel, the first main exchange flow channel is connected to the first auxiliary exchange flow channel, and the fixed unit includes at least the first auxiliary exchange flow channel.

[0012] According to one aspect of an embodiment of the present application, the first exchange flow channel also includes a second main exchange flow channel, the second exchange flow channel also includes a second auxiliary exchange flow channel and a third auxiliary exchange flow channel, the second main exchange flow channel is connected to the second auxiliary exchange flow channel and the third auxiliary exchange flow channel, and the third auxiliary exchange flow channel is connected to the first auxiliary exchange flow channel.

[0013] The second fixing unit includes a first auxiliary exchange flow channel and a third auxiliary exchange flow channel, and the first fixing unit includes a first auxiliary exchange flow channel and a second auxiliary exchange flow channel.

[0014] According to one aspect of an embodiment of the present application, it also includes an adjustable component, the adjustable component includes a first exchange flow channel, and the fixed component is connected to the adjustable component.

[0015] According to one aspect of an embodiment of the present application, the adjustable component includes at least one adjustable unit, and the adjustable unit is provided with a first exchange flow channel.

[0016] According to one aspect of the embodiment of the present application, the adjustment assembly includes a bearing portion and a side wall portion, the side wall portion is arranged around the bearing portion, and the adjustable unit includes at least one of the bearing portion and the side wall portion.

[0017] According to one aspect of the embodiment of the present application, the first exchange flow channel includes a first main exchange flow channel and a second main exchange flow channel, the bearing portion is provided with the first main exchange flow channel, and the side wall portion is provided with the second main exchange flow channel.

[0018] On the other hand, an embodiment of the present application further provides a battery pack including a battery pack case, wherein the battery pack case includes a heat exchange device as described in any one of the above items.

[0019] In the heat exchange device and battery pack provided in the embodiments of the present application, the heat exchange device includes a fixed component, the fixed component includes a fixed unit, the fixed unit includes a heat exchange part and a second exchange channel, the heat exchange part is connected to the first exchange channel of the battery pack case through the second exchange channel, and the fixed component can be applicable to battery pack cases of vehicle models with different wheelbases, so that the heat exchange devices on different vehicle models can be universalized. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0021] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0022] Figure 2 An exploded schematic diagram of a heat exchange device provided in some embodiments of the present application;

[0023] Figure 3 A schematic diagram of the structure of a first fixing unit in a heat exchange device provided in some embodiments of the present application;

[0024] Figure 4 A schematic diagram of the structure of a second fixing unit in a heat exchange device provided in some embodiments of the present application;

[0025] Figure 5 An exploded schematic diagram of a heat exchange device provided in some embodiments of the present application;

[0026] Figure 6 A schematic diagram of the structure of a heat exchange device provided in some embodiments of the present application.

[0027] Marking Description:

[0028] 1. Vehicle; 1000. Battery pack;

[0029] 10. fixing assembly; 11. fixing unit; 111. heat exchange part; 111a. first subsection; 111b. second subsection; 112. first fixing unit; 113. second fixing unit; 114. heat dissipation area;

[0030] 20. First exchange channel; 21. First main exchange channel; 22. Second main exchange channel;

[0031] 30, second exchange flow channel; 31, first auxiliary exchange flow channel; 32, second auxiliary exchange flow channel; 33, third auxiliary exchange flow channel;

[0032] 40. adjustable component; 41. adjustable unit; 42. bearing portion; 43. side wall portion;

[0033] X, the extension direction of the first exchange channel; Y, the extension direction of the second exchange channel.

[0034] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0035] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0037] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0038] The term "plurality" used in the present application refers to two or more (including two).

[0039] In the present application, battery cells may include lithium-ion secondary battery cells, lithium-ion primary battery cells, lithium-sulfur battery cells, sodium-lithium-ion battery cells, sodium-ion battery cells or magnesium-ion battery cells, etc., and the embodiments of the present application do not limit this. Battery cells may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, and the embodiments of the present application do not limit this.

[0040] The battery pack mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. The battery pack generally includes a box for encapsulating one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0041] The technical solutions described in the embodiments of the present application are applicable to battery packs and electrical devices using the battery packs.

[0042] The electrical device may be a vehicle, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, an electric tool, and the like. The vehicle may be a fuel vehicle, a gas 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, and the like; the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, and the like; the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, and the like; the electric tool may include a metal cutting electric tool, a grinding electric tool, an assembly electric tool, and an electric tool for railways, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator, and an electric planer, and the like. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical devices.

[0043] For the convenience of explanation, the following embodiments are described by taking the electric device as a vehicle as an example. Figures 1 to 6 The heat exchange device and the battery pack according to the embodiments of the present application are described in detail.

[0044] Figure 1 A schematic diagram of the structure of a vehicle provided for some embodiments of the present application. Figure 2 An exploded schematic diagram of a battery pack provided for some embodiments of the present application.

[0045] like Figure 1 As shown, a battery pack 1000 is disposed inside the vehicle 1, and the battery pack 1000 may be disposed at the bottom, head, or tail of the vehicle 1. The battery pack 1000 may be used to power the vehicle 1, for example, the battery pack 1000 may be used as an operating power source for the vehicle 1.

[0046] In some embodiments of the present application, the battery pack 1000 can not only serve as an operating power source for the vehicle 1 , but also serve as a driving power source for the vehicle 1 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1 .

[0047] In the battery pack 1000, there can be one or more battery cells. If there are multiple battery cells, the multiple battery cells can be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cells are connected in series and in parallel. Multiple battery cells can be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells is accommodated in a box; of course, multiple battery cells can also be connected in series, in parallel, or in a mixed connection to form a battery module, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the box. In addition, in some battery packs 1000, the battery module is cancelled, and multiple battery cells are directly integrated in the box, and then multiple battery packs 1000 are connected in series, in parallel, or in a mixed connection to form a whole.

[0048] Figure 2An exploded schematic diagram of a heat exchange device provided in some embodiments of the present application.

[0049] like Figure 2 As shown, the embodiment of the present application provides a heat exchange device for a battery pack case, the battery pack case includes a first exchange channel 20, and the heat exchange device includes a fixing assembly 10. The fixing assembly 10 includes a fixing unit 11, the fixing unit 11 includes a heat exchange portion 111 and a second exchange channel 30, the heat exchange portion 111 is connected to the first exchange channel 20 of the battery pack case through the second exchange channel 30, and the extension direction X of the first exchange channel 20 intersects with the extension direction Y of the second exchange channel 30.

[0050] In the embodiment of the present application, the heat exchange device is used for the battery pack case. Optionally, the heat exchange device can be a part of the battery pack case. For example, the fixing unit 11 is a plate-shaped structure, and the fixing unit 11 can be a side wall of the battery pack case. Alternatively, the fixing unit 11 is a part of the side wall of the battery pack case and is fixedly connected to the side wall of the battery pack case.

[0051] Optionally, the number of the fixing unit 11 may be one, or more. The embodiment of the present application does not impose any special limitation on the number of the fixing units 11.

[0052] Taking the plate-shaped fixing unit 11 as an example, the heat exchange part 111 can be located in the central area of ​​the fixing unit 11, which is conducive to the heat exchange part 111 redistributing the medium in the connected second exchange channel 30. Of course, the position of the heat exchange part 111 can also be adjusted according to design requirements.

[0053] Optionally, there may be a plurality of second exchange channels 30 , and the plurality of second exchange channels 30 are all connected to the heat exchange portion 111 .

[0054] Optionally, the shape of the battery pack case includes a rectangular parallelepiped, a cube, an ellipsoid or other shapes. The embodiment of the present application takes the battery pack case as a rectangular parallelepiped as an example, the extension direction X of the first exchange channel 20 is the length extension direction of the battery pack case, and the extension direction Y of the second exchange channel 30 is the width extension direction of the battery pack case. The fixing unit 11 can be a side wall or a part of a side wall defined by the width and height of the battery pack case. Optionally, the angle formed by the extension direction X of the first exchange channel 20 and the extension direction Y of the second exchange channel 30 can also be other angles.

[0055] In the embodiment of the present application, the heat exchange part 111 can adjust the temperature of the medium in the flow channel. For example, the heat exchange part 111 itself can heat or cool the temperature of the medium in the flow channel. Or the heat exchange part 111 interacts with other components to change the temperature of the medium in the flow channel.

[0056] The heat exchange portion 111 is connected to the first exchange channel 20 through the second exchange channel 30, so as to adjust the heat generated by the battery cells in the battery pack case so that the temperature inside the battery pack case remains constant. Optionally, the second exchange channel 30 and the first exchange channel 20 can be integrated by splicing. Optionally, the fixing unit 11 can be connected to the battery pack case by welding, riveting, screwing, etc. Optionally, a heat dissipation area 114 can also be provided on the fixing unit 11, and a heating element can be provided in the heat dissipation area 114. For example, a high-voltage distribution box (Battery Disconnect Unit, BDU) is provided in the heat dissipation area 114.

[0057] In the heat exchange device, battery pack case, battery pack 1000 and electrical device provided in the embodiments of the present application, the heat exchange device includes a fixing component 10, the fixing component 10 includes a fixing unit 11, the fixing unit 11 includes a heat exchange part 111 and a second exchange channel 30, the heat exchange part 111 is connected to the first exchange channel 20 of the battery pack case through the second exchange channel 30, and the fixing component 10 can be applicable to battery pack cases of vehicle models with different wheelbases, so that the heat exchange devices on different vehicle models can be universalized.

[0058] Figure 3 A schematic diagram of the structure of the first fixing unit in the heat exchange device provided in some embodiments of the present application. Figure 4 A schematic structural diagram of a second fixing unit in a heat exchange device provided in some embodiments of the present application.

[0059] like Figures 2 to 4 As shown, as an optional embodiment, the fixing assembly 10 includes a first fixing unit 112 and a second fixing unit 113 , and the first fixing unit 112 and the second fixing unit 113 are respectively arranged on both sides of the battery pack body along the extension direction X of the first exchange channel 20 .

[0060] Through the above-mentioned arrangement in the embodiment of the present application, the battery pack case of vehicle models with different wheelbases can be connected to the first fixing unit 112 and the second fixing unit 113 by simply changing its length, thereby simplifying the change of the battery pack case, facilitating the fixing assembly 10 to adapt to the battery pack cases of vehicle models with different wheelbases, and improving the versatility of the heat exchange device.

[0061] Continuing with the example of a battery pack case that is in the shape of a rectangular parallelepiped, the first fixing unit 112 and the second fixing unit 113 are respectively arranged on two opposite side walls of the battery pack case, and the medium passing through the heat exchange part 111 and the second exchange channel 30 in the first fixing unit 112 can flow into the second exchange channel 30 and the heat exchange part 111 in the second fixing unit 113 through the first exchange channel 20.

[0062] The embodiment of the present application does not impose any special limitation on the number of the first fixing units 112 and the number of the second fixing units 113 . The number of the first fixing units 112 may be the same as or different from the number of the second fixing units 113 .

[0063] Optionally, the first fixing unit 112 and the second fixing unit 113 may be arranged opposite to each other. Alternatively, the position of the first fixing unit 112 on the side wall may be different from the position of the second fixing unit 113 on the side wall.

[0064] like Figure 2 and Figure 3 As shown, as an optional embodiment, the heat exchange portion 111 includes a first sub-portion 111 a , and the first fixing unit 112 includes the first sub-portion 111 a , and the first sub-portion 111 a is configured to communicate with a medium supply source.

[0065] Through the above-mentioned arrangement in the embodiment of the present application, the first fixed unit 112 can be connected to the medium supply source through the first division 111a, so that the battery pack case can be connected to the external medium supply source, realizing the circulation of the medium in the battery pack case and the external medium supply source, so that the medium temperature in the battery pack case is kept constant, thereby improving the heat exchange efficiency of the battery pack case.

[0066] Optionally, the first section 111a includes an inlet and / or an outlet, wherein the inlet allows the medium in the medium supply source to flow into the second exchange channel 30 and the first exchange channel 20, and the outlet allows the medium in the first exchange channel 20 and the second exchange channel 30 to flow into the medium supply source.

[0067] Optionally, an inlet and / or an outlet may also be provided in the second fixing unit 113 .

[0068] It can be understood that the first subsection 111a is in communication with the second exchange flow channel 30. When the first subsection 111a includes an inlet and an outlet, the first fixed unit 112 includes at least two second exchange flow channels 30, and the two second exchange flow channels 30 are connected to the inlet and the outlet, respectively. When the first subsection 111a includes one of the inlet and the outlet, the first fixed unit 112 may include one second exchange flow channel 30, and the one second exchange flow channel 30 is connected to one of the inlet and the outlet.

[0069] like Figure 2 and Figure 4 As shown, as an optional implementation, the heat exchange portion 111 further includes a second sub-portion 111b, the second fixing unit 113 includes the second sub-portion 111b, and the second sub-portion 111b includes a temperature control device.

[0070] Through the above-mentioned arrangement, the embodiment of the present application can adjust the temperature of the medium that passes through the first fixed unit 112 and the first exchange channel 20 and enters the second fixed unit 113, so that the temperature of the medium in the second fixed unit 113 reaches a preset value, and the medium here can enter the first exchange channel 20 again or enter the medium supply source. Since the temperature of the medium has been adjusted, there is no need to heat or cool the medium, so that the temperature of the medium in the battery box remains constant, thereby improving the heat exchange efficiency.

[0071] Optionally, the temperature control device includes one or more of a semiconductor refrigeration (TEC) device, a heater, and a radiator.

[0072] Optionally, the number of the second subdivisions 111b can be multiple, and the multiple second subdivisions 111b are spaced apart along the extension direction Y of the second exchange channel 30. Exemplarily, the number of the second subdivisions 111b includes two, and the two second subdivisions 111b are symmetrically distributed around the center of the second exchange channel 30.

[0073] like Figure 2 As shown, as an optional implementation, one second exchange flow channel 30 is correspondingly connected to at least one first exchange flow channel 20 .

[0074] Through the above-mentioned arrangement in the embodiment of the present application, when the second exchange channel 30 corresponds to and connects multiple first exchange channels 20, the second exchange channel 30 can play a role in medium redistribution, so that the medium passing through a heat exchange part 111 can flow into multiple first exchange channels 20, thereby reducing the number of second exchange channels 30 and the volume of the fixed unit 11, which is conducive to the miniaturization of the battery pack body.

[0075] Optionally, one second exchange flow channel 30 may be in communication with one first exchange flow channel 20. Alternatively, one second exchange flow channel 30 may be in communication with a plurality of first exchange flow channels 20.

[0076] Figure 5 An exploded schematic diagram of a heat exchange device provided in some embodiments of the present application.

[0077] like Figure 2 and Figure 5 As shown, as an optional embodiment, the first exchange flow channel 20 includes a first main exchange flow channel 21, the second exchange flow channel 30 includes a first auxiliary exchange flow channel 31, the first main exchange flow channel 21 is connected to the first auxiliary exchange flow channel 31, and the fixed unit 11 includes at least the first auxiliary exchange flow channel 31.

[0078] Alternatively, if Figure 5As shown, the first fixed unit 112 and the second fixed unit 113 both include a first auxiliary exchange channel 31. For example, the heat exchange portion 111 in the first fixed unit 112 includes an inlet, and the heat exchange portion 111 in the second fixed unit 113 includes an outlet. The medium flowing into the first auxiliary exchange channel 31 in the first fixed unit 112 through the inlet, after redistribution of the medium in the first auxiliary exchange channel 31, enters into a plurality of first main exchange channels 21, and then flows into the first auxiliary exchange channel 31 of the second fixed unit 113, and then flows out from the outlet of the second fixed unit 113. Of course, the embodiment of the present application is not limited to this, and it is sufficient to ensure the heat exchange of the battery pack box. Optionally, a first auxiliary exchange channel 31 of the second fixed unit 113 can be connected to a plurality of first main exchange channels 21, so that the medium in the plurality of first main exchange channels 21 can be gathered together by the first auxiliary exchange channel 31 in the second fixed unit 113, so as to facilitate outflow from the outlet.

[0079] like Figures 2 to 4 As shown, as an optional embodiment, the first exchange flow channel 20 further includes a second main exchange flow channel 22, the second exchange flow channel 30 further includes a second auxiliary exchange flow channel 32 and a third auxiliary exchange flow channel 33, the second main exchange flow channel 22 is connected to the second auxiliary exchange flow channel 32 and the third auxiliary exchange flow channel 33, and the third auxiliary exchange flow channel 33 is connected to the first auxiliary exchange flow channel 31. Among them, the second fixing unit 113 includes the first auxiliary exchange flow channel 31 and the third auxiliary exchange flow channel 33, and the first fixing unit 112 includes the first auxiliary exchange flow channel 31 and the second auxiliary exchange flow channel 32.

[0080] Through the above-mentioned arrangement, the flow path of the medium through the heat exchange part 111 of the first fixed unit 112 in the embodiment of the present application includes, in sequence: the heat exchange part 111 of the first fixed unit 112, the first auxiliary exchange channel of the first fixed unit 112, the first main exchange channel 21, the first auxiliary exchange channel 31 of the second fixed unit 113, the third auxiliary exchange channel 33 of the second fixed unit 113, the second main exchange channel 22, the second auxiliary exchange channel 32 of the first fixed unit 112, and finally flows into the heat exchange part 111 of the first fixed unit 112, so that the flow path of the medium in the battery pack body forms a circulation, thereby improving the heat exchange efficiency of the heat exchange device.

[0081] Optionally, the flow path of the medium through the heat exchange part 111 of the first fixed unit 112 may also include, in sequence: the heat exchange part 111 of the first fixed unit 112, the first auxiliary exchange channel of the first fixed unit 112, the first main exchange channel 21, the first auxiliary exchange channel 31 of the second fixed unit 113, the third auxiliary exchange channel 33 of the second fixed unit 113, the heat exchange part 111 of the second fixed unit 113, the second main exchange channel 22, the second auxiliary exchange channel 32 of the first fixed unit 112, and finally flows into the heat exchange part 111 of the first fixed unit 112, so that the medium is heated or cooled after flowing to the second fixed unit 113, so that the temperature of the medium flowing into the second main exchange channel 22 is close to the temperature of the medium in the first main exchange channel 21, thereby increasing the thermal conductivity gradient and improving the heat exchange efficiency of the heat exchange device.

[0082] Optionally, the flow direction of the medium in the first main exchange flow channel 21 and the flow direction of the medium in the second main exchange flow channel 22 may be opposite.

[0083] Based on the above, the heat exchange part 111 in the first fixing unit 112 includes an inlet and / or an outlet, so that the medium in the battery pack case can flow out from the outlet after circulating one or more times in the battery pack case.

[0084] Figure 6 A schematic diagram of the structure of a heat exchange device provided in some embodiments of the present application.

[0085] like Figure 2 and Figure 6 As shown, as an optional embodiment, the heat exchange device further includes an adjustable component 40 , the adjustable component 40 includes a first exchange flow channel 20 , and the fixed component 10 is connected to the adjustable component 40 .

[0086] Through the above-mentioned arrangement in the embodiment of the present application, the heat exchange device can adjust the size of the battery pack box according to design requirements, so as to adapt to vehicle models with different wheelbases.

[0087] Optionally, the heat exchange device may include a split state and an integral state. In the split state, such as Figure 2 As shown, the fixed component 10 and the adjustable component 40 are two independent components. Exemplarily, the heat exchange device includes a first fixed unit 112, a second fixed unit 113 and an adjustable component 40. In the overall state, as shown in FIG. Figure 6As shown, the fixing component 10 and the adjustable component 40 can be an integral structure or a spliced ​​structure, and the heat exchange device includes a first fixing unit 112, a second fixing unit 113 and an adjustable component 40. The first fixing unit 112 and the second fixing unit 113 can be located on opposite sides of the adjustable component 40. Of course, the first fixing unit 112 and the second fixing unit 113 can be located on adjacent sides of the adjustable component 40. Optionally, the first fixing unit 112, the second fixing unit 113 and the adjustable component 40 can be enclosed to form a battery pack box.

[0088] like Figure 2 As shown, as an optional embodiment, the adjustable component 40 includes at least one adjustable unit 41 , and the adjustable unit 41 is provided with a first exchange flow channel 20 .

[0089] The above-mentioned configuration in the embodiment of the present application is conducive to adjusting the size of the adjustable component 40 and improving the adaptability of the adjustable component 40.

[0090] Optionally, the adjustable component 40 may include one adjustable unit 41 . Of course, the adjustable component 40 may include a plurality of adjustable units 41 .

[0091] Optionally, the sizes of the multiple adjustable units 41 may be the same or different.

[0092] Optionally, a plurality of adjustable units 41 may be arranged in sequence along the extension direction X of the first exchange channel 20 .

[0093] like Figure 2 As shown, as an optional embodiment, the adjustable component 40 includes a bearing portion 42 and a side wall portion 43 , the side wall portion 43 is arranged around the bearing portion 42 , and the adjustable unit 41 includes at least one of the bearing portion 42 and the side wall portion 43 .

[0094] Through the above arrangement, the embodiment of the present application can support the battery cells and the first exchange channel 20 , and the side wall 43 can also support the first exchange channel 20 . The support 42 , the side wall 43 and the fixing assembly 10 can be enclosed to form a battery box.

[0095] Optionally, the shape of the load-bearing portion 42 includes a plate shape, and the battery cell can be located on one side surface of the load-bearing plate. The first exchange channel 20 can be arranged in the load-bearing portion 42. For example, the load-bearing portion 42 includes two plate structures, and the first exchange channel 20 is formed between the two plate structures. Or the first exchange channel 20 is arranged on the side of the load-bearing portion 42 that supports the battery cell. For example, the first exchange channel 20 is formed by a cold flow plate, and the cold flow plate is located between two adjacent battery cells. The present application does not impose any special restrictions on the formation of the first exchange channel 20, and it is sufficient to ensure that the first exchange channel 20 is connected to the second exchange channel 30.

[0096] Optionally, the side wall portion 43 is arranged around the bearing portion 42. Taking the shape of the bearing portion 42 as a rectangle as an example, the side wall portions 43 are arranged on both opposite sides of the bearing portion 42 in the length direction, and the fixing components 10 can be arranged on both opposite sides of the bearing portion 42 in the width direction.

[0097] Optionally, among the plurality of adjustable units 41 , some of the adjustable units 41 may include a bearing portion 42 , some of the adjustable units 41 may include a side wall portion 43 , and some of the adjustable units 41 may include a bearing portion 42 and a side wall portion 43 .

[0098] Optionally, a heat-insulating layer may be provided on the side wall of the battery pack case. For example, the heat-insulating layer may be provided on the side wall portion 43 , and the heat-insulating layer may also be provided on the surface of the fixing unit 11 .

[0099] In the embodiment of the present application, a plurality of adjustable units 41 can be freely spliced ​​together to form a portion of a battery pack box of different sizes, thereby adapting to vehicle models with different wheelbases.

[0100] like Figure 2 As shown, as an optional embodiment, the first exchange flow channel 20 includes a first main exchange flow channel 21 and a second main exchange flow channel 22 , the bearing portion 42 is provided with the first main exchange flow channel 21 , and the side wall portion 43 is provided with the second main exchange flow channel 22 .

[0101] Through the above arrangement, the embodiment of the present application enables the surrounding sides and bottom of the battery cells in the battery pack case to have heat dissipation pathways, thereby improving the heat dissipation efficiency of the battery pack case.

[0102] Optionally, the flow direction of the medium in the first main exchange flow channel 21 provided on the bearing portion 42 is opposite to the flow direction of the medium in the second main exchange flow channel 22 provided on the side wall portion 43 .

[0103] Optionally, the number of the side wall portions 43 includes multiple ones. Exemplarily, the side wall portions 43 include two, and the two side wall portions 43 are respectively arranged on two opposite sides of the bearing portion 42 , and the two side wall portions 43 are both provided with the second main exchange flow channel 22 .

[0104] On the other hand, an embodiment of the present application further provides a battery pack, including a battery pack case, the battery pack case including a heat exchange device as described in any of the above items.

[0105] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A heat exchange device for a battery pack box, the battery pack box comprising a first exchange flow channel, characterized in that: The heat exchange device comprises: A fixing assembly includes a fixing unit, wherein the fixing unit includes a heat exchange portion and a second exchange channel, wherein the heat exchange portion is connected to the first exchange channel of the battery pack body through the second exchange channel, and an extension direction of the first exchange channel intersects with an extension direction of the second exchange channel.

2. The heat exchange device according to claim 1, characterized in that: The fixing assembly includes a first fixing unit and a second fixing unit, and the first fixing unit and the second fixing unit are respectively arranged on two sides of the battery pack body along an extension direction of the first exchange channel.

3. The heat exchange device according to claim 2, characterized in that: The heat exchange portion includes a first sub-portion, the first fixing unit includes a first sub-portion, and the first sub-portion is configured to communicate with a medium supply source.

4. The heat exchange device according to claim 2, characterized in that: The heat exchange portion further includes a second subsection, the second fixing unit includes a second subsection, and the second subsection includes a temperature control device.

5. The heat exchange device according to claim 2, characterized in that: One of the second exchange flow channels is correspondingly connected to at least one of the first exchange flow channels.

6. The heat exchange device according to claim 5, characterized in that: The first exchange flow channel includes a first main exchange flow channel, the second exchange flow channel includes a first auxiliary exchange flow channel, the first main exchange flow channel is communicated with the first auxiliary exchange flow channel, and the fixing unit at least includes the first auxiliary exchange flow channel.

7. The heat exchange device according to claim 6, characterized in that: The first exchange flow channel further includes a second main exchange flow channel, the second exchange flow channel further includes a second auxiliary exchange flow channel and a third auxiliary exchange flow channel, the second main exchange flow channel is connected to the second auxiliary exchange flow channel and the third auxiliary exchange flow channel, and the third auxiliary exchange flow channel is connected to the first auxiliary exchange flow channel; The second fixing unit includes the first auxiliary exchange flow channel and the third auxiliary exchange flow channel, and the first fixing unit includes the first auxiliary exchange flow channel and the second auxiliary exchange flow channel.

8. The heat exchange device according to claim 1, characterized in that: It also includes an adjustable component, which includes the first exchange flow channel, and the fixed component is connected to the adjustable component.

9. The heat exchange device according to claim 8, characterized in that: The adjustable component includes at least one adjustable unit, and the adjustable unit is provided with the first exchange flow channel.

10. The heat exchange device according to claim 9, characterized in that: The adjustable component includes a bearing portion and a side wall portion, wherein the side wall portion is arranged at a peripheral side of the bearing portion, and the adjustable unit includes at least one of the bearing portion and the side wall portion.

11. The heat exchange device according to claim 10, characterized in that: The first exchange flow channel includes a first main exchange flow channel and a second main exchange flow channel. The bearing portion is provided with the first main exchange flow channel, and the side wall portion is provided with the second main exchange flow channel.

12. A battery pack, characterized in that: It comprises a battery pack case, wherein the battery pack case comprises the heat exchange device as claimed in any one of claims 1 to 11.

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