Heat exchange component, battery and electric device

Abstract

The utility model provides a heat exchange component, a battery and an electric device. The heat exchange component comprises a first heat exchange part and a second heat exchange part. The first heat exchange part comprises a first wall part, a first heat exchange cavity defined by the first wall part and two first openings which are oppositely arranged in the first direction and communicate with the first heat exchange cavity. The first heat exchange part is sleeved with the second heat exchange part, the second heat exchange part comprises a second wall part and two third wall parts connected to the two sides of the second wall part in the first direction, the third wall parts are connected with the first wall part and the second wall part, and a second heat exchange cavity is defined by the first wall part, the second wall part and the third wall parts; the first heat exchange chamber is used for accommodating a first heat exchange medium, the second heat exchange chamber is used for accommodating a second heat exchange medium capable of performing heat exchange through phase change, and the second heat exchange chamber plays a temperature buffering role between the single battery and the first heat exchange chamber, so that the temperature fluctuation of the single battery is smoothened, and the service life of the battery is prolonged.

Description

Technical Field

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

[0002] As the power source of pure electric vehicles, power batteries are a key link in improving the performance of the entire vehicle. The temperature characteristics of the battery directly affect the performance, life and durability of the electric vehicle. Therefore, it is crucial for electric vehicles to set up a cooling system in the battery to control the temperature of the battery.

[0003] The cooling system in the battery includes heat exchange plates, which are in contact with the battery cells to regulate the temperature of the battery cells. However, this also causes a large fluctuation range in the battery cell temperature, which has an adverse effect on the battery life. Utility Model Content

[0004] In view of the above problems, the present application provides a heat exchange component, a battery and an electrical device, which can smooth the temperature fluctuation of the battery during operation and improve the battery life.

[0005] In a first aspect, the present application provides a heat exchange component, comprising: a first heat exchange portion, comprising a first wall portion, a first heat exchange chamber formed by the first wall portion, and two first openings arranged opposite to each other in a first direction and connected to the first heat exchange chamber; a second heat exchange portion, which is sleeved outside the first heat exchange portion, the second heat exchange portion comprising a second wall portion and two third wall portions connected to both sides of the second wall portion in the first direction, the third wall portion connecting the first wall portion and the second wall portion, the first wall portion, the second wall portion and the third wall portion enclose a second heat exchange chamber, wherein the first heat exchange chamber is used to accommodate a first heat exchange medium, the second heat exchange chamber is used to accommodate a second heat exchange medium, and the second heat exchange medium can change heat through phase change.

[0006] In the scheme of the embodiment of the present application, the heat exchange component includes a first heat exchange part and a second heat exchange part, the first heat exchange part includes a first wall part, a first heat exchange chamber formed by the first wall part, and two first openings arranged opposite to each other in a first direction and connected to the first heat exchange chamber; the second heat exchange part is sleeved outside the first heat exchange part, the second heat exchange part includes a second wall part and two third wall parts connected to the second wall part on both sides in the first direction, the third wall part connects the first wall part and the second wall part, and the first wall part, the second wall part and the third wall part enclose a second heat exchange chamber. By arranging the second heat exchange chamber between the first heat exchange chamber and the battery cell, the first heat exchange chamber is used to accommodate the first heat exchange medium, and the second heat exchange chamber is used to accommodate the second heat exchange medium that can change heat through phase change, so that the heat of the battery cell is first exchanged with the second heat exchange medium in the second heat exchange chamber, and the second heat exchange medium undergoes phase change, and then the first heat exchange medium in the first heat exchange chamber transfers the heat of the second heat exchange chamber to the outside to adjust the overall temperature of the battery. The second heat exchange chamber acts as a temperature buffer between the battery cell and the first heat exchange chamber to smooth out the temperature fluctuation of the battery cell and improve the battery life.

[0007] In some embodiments, the second wall portion includes an arc segment, the arc segment is recessed toward the first heat exchange chamber, and the arc segment is connected to the two third wall portions in a first direction, and the arc segment is used to contact the battery cell.

[0008] In the solution of the embodiment of the present application, the second wall portion includes an arc segment recessed toward the first heat exchange chamber, and the arc segment is connected to the two third wall portions in a first direction. The arc segment is used to contact the cylindrical battery cell to improve the fit between the second wall portion and the cylindrical battery cell, thereby improving the heat exchange effect of the heat exchange component on the cylindrical battery cell.

[0009] In some embodiments, a plurality of arc segments are arranged around the first direction.

[0010] In the solution of the embodiment of the present application, a plurality of arc segments are arranged around the first direction to increase the contact area between the heat exchange component and the cylindrical battery cell, thereby improving the heat exchange effect of the heat exchange component on the cylindrical battery cell.

[0011] In some embodiments, the second wall portion further includes a connecting segment, and adjacent arc segments are arranged at intervals and connected by the connecting segment.

[0012] In the scheme of the embodiment of the present application, the second wall portion also includes a connecting section, and adjacent arc segments are arranged at intervals and connected by the connecting section to increase the space of the second heat exchange chamber at the tip of the arc segment, so that more second heat exchange medium can be accommodated at this position, thereby improving the heat exchange effect of the heat exchange component at the tip of the arc segment.

[0013] In some embodiments, the heat exchange component also includes two confluence units arranged opposite to each other in the first direction, at least one confluence unit includes an external end and a bracket, the bracket is provided with a confluence channel, and the external end is connected to the first heat exchange chamber and the external environment through the confluence channel.

[0014] In the solution of the embodiment of the present application, the external end is connected to the first heat exchange chamber and the external environment through a confluence channel arranged on the bracket. The confluence channel is arranged in the bracket to improve the reliability of the confluence channel and reduce the difficulty of preparing the confluence channel.

[0015] In some embodiments, the confluence unit further includes a connecting piece, one end of which is connected to the bracket and the other end of which is sealed and connected to the first heat exchange part and / or the second heat exchange part, and the connecting piece connects the first heat exchange chamber and the confluence channel.

[0016] In the solution of the embodiment of the present application, the confluence unit also includes a connecting piece, one end of the connecting piece is connected to the bracket, and the other end of the connecting piece is sealed and connected to the first heat exchange part and / or the second heat exchange part. The first heat exchange chamber and the confluence channel are connected through the connecting piece. The connecting piece has the effect of guiding the first heat exchange medium, connecting the first heat exchange part, the second heat exchange part and the bracket, and sealing the first heat exchange chamber, thereby improving the integration of the heat exchange components.

[0017] In some embodiments, the third wall portion includes a covering portion and a fixing portion, the covering portion is connected to the second wall portion, the fixing portion extends along a first direction and includes a first port and a second port arranged opposite to each other in the first direction, at least part of the connecting piece extends from the first port into the fixing portion, and the second port is connected to the first heat exchange chamber.

[0018] In the scheme of the embodiment of the present application, the third wall portion includes a covering portion and a fixing portion, the covering portion is connected to the second wall portion, the fixing portion extends along a first direction and includes a first port and a second port arranged opposite to each other in the first direction, at least a portion of the connecting piece extends into the fixing portion from the first port, the second port is connected to the first heat exchange chamber, and the first extended fixing portion improves the connection strength and sealing reliability between the third wall portion and the connecting portion.

[0019] In some embodiments, at least one bracket is provided with a fixing groove, and the fixing groove is used to accommodate at least part of the battery cells.

[0020] In the solution of the embodiment of the present application, a fixing groove is provided on at least one bracket so that the fixing groove can be used to accommodate at least part of the battery cell, so that the heat exchange component also has the function of fixing the battery cell, thereby improving the practicality of the heat exchange component.

[0021] In some embodiments, the bracket is further recessed with a receiving groove, which is connected to at least two fixing grooves, and is used to receive a connecting piece that keeps at least two battery cells electrically connected.

[0022] In the solution of the embodiment of the present application, a receiving groove is recessed on the bracket, and the receiving groove is connected to at least two fixing grooves, so that the fixing groove can accommodate and fix the electrical connecting piece of the battery cell, thereby improving the practicality of the heat exchange component.

[0023] In some embodiments, at least one of the first wall portion and the second wall portion is a vapor chamber.

[0024] In the solution of the embodiment of the present application, at least one of the first wall portion and the second wall portion is a heat spreader to improve the heat exchange effect of the heat exchange component.

[0025] In a second aspect, an embodiment of the present application provides a battery, comprising a battery cell and a heat exchange component according to an embodiment of the first aspect, wherein the heat exchange component is in contact with the battery cell.

[0026] In a third aspect, an embodiment of the present application provides an electrical device, comprising a battery as in the embodiment of the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0028] Figure 1 A schematic diagram of the structure of a vehicle provided in one embodiment of the present application;

[0029] Figure 2 An exploded schematic diagram of a battery provided in one embodiment of the present application;

[0030] Figure 3 A schematic diagram of the structure of a battery module in a battery provided in an embodiment of the present application;

[0031] Figure 4 An exploded view of a battery provided in an embodiment of the present application;

[0032] Figure 5 A partial structural front view of a heat exchange component provided in an embodiment of the present application;

[0033] Figure 6 for Figure 5 Sectional view at AA in the middle;

[0034] Figure 7 A schematic diagram of a portion of the structure of a heat exchange component provided in an embodiment of the present application;

[0035] Figure 8 for Figure 5 Sectional view at the middle BB;

[0036] Fig. 9 A schematic diagram of the structure of a battery provided in an embodiment of the present application;

[0037] Fig.10 for Fig. 9 Sectional view at CC;

[0038] Fig.11 for Fig.10 Schematic diagram of the enlarged structure at D in the middle.

[0039] Description of reference numerals:

[0040] 1. Vehicle; 2. Battery; 101. Motor; 102. Controller; 201. Battery module; 3. Battery cell; 4. Box; 41. Box body; 42. Cover plate; 31. Connecting piece;

[0041] 5. Heat exchange components;

[0042] 51. first heat exchange portion; 511. first wall portion; 512. first heat exchange chamber;

[0043] 52. Second heat exchange portion; 521. Second wall portion; 522. Third wall portion; 523. Second heat exchange chamber; 5211. Arc section; 5212. Connecting section; 5221. Covering portion; 5222. Fixing portion; 5223. Sealing member; 53. Confluence unit; 531. Bracket; 532. External connection end; 533. Connecting member; 5311. Fixing groove. DETAILED DESCRIPTION

[0044] The following embodiments of the technical solution of the present application will be described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0045] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present application should have the common meanings understood by technicians in the field to which the embodiments of the present application belong.

[0046] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0047] In addition, the technical terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0048] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0049] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0050] In the present application, the 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 are not limited to this.

[0051] The battery 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. For example, the battery mentioned in the present application may include a battery module or a battery pack. The battery 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.

[0052] Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages of energy conservation and environmental protection. For electric vehicles, battery technology is an important factor related to their development. As the power source of pure electric vehicles, power batteries are a key link in improving the performance of the entire vehicle. The temperature characteristics of batteries directly affect the performance, life and durability of electric vehicles. How to set up a cooling system in the battery to control the temperature of the battery is crucial for electric vehicles.

[0053] At present, the cooling system in the battery includes a heat exchange plate, which is in contact with the battery cell and adjusts the temperature of the battery cell by the flow of a heat exchange medium with a temperature difference with the battery cell. For example, the battery cell is usually cooled by cooling water flowing in the heat exchange plate. This causes the temperature of the battery to fluctuate violently when it is working, which has an adverse effect on the battery life.

[0054] Based on the above problems, the present application provides a heat exchange component, which includes a first heat exchange part and a second heat exchange part, the first heat exchange part includes a first wall part, a first heat exchange chamber formed by the first wall part, and two first openings arranged opposite to each other in a first direction and connected to the first heat exchange chamber; the second heat exchange part is sleeved outside the first heat exchange part, the second heat exchange part includes a second wall part and two third wall parts connected to the second wall part on both sides in the first direction, the third wall part connects the first wall part and the second wall part, and the first wall part, the second wall part and the third wall part enclose a second heat exchange chamber. By arranging the second heat exchange chamber between the first heat exchange chamber and the battery cell, the first heat exchange chamber is used to accommodate the first heat exchange medium, and the second heat exchange chamber is used to accommodate the second heat exchange medium that can change heat through phase change, so that the heat of the battery cell is first exchanged with the second heat exchange medium in the second heat exchange chamber, and the second heat exchange medium undergoes phase change, and then the first heat exchange medium in the first heat exchange chamber transfers the heat of the second heat exchange chamber to the outside to adjust the overall temperature of the battery. The second heat exchange chamber acts as a temperature buffer between the battery cell and the first heat exchange chamber to smooth out the temperature fluctuation of the battery cell and improve the battery life.

[0055] The technical solution described in the embodiments of the present application is applicable to electrical devices using batteries.

[0056] 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.

[0057] It should be understood that the technical solutions described in the embodiments of the present application are not limited to the batteries and electrical equipment described above, but can also be applied to all batteries including a box and electrical equipment using the battery. However, for the sake of simplicity, the following embodiments are described using electric vehicles as an example.

[0058] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle 1 provided for some embodiments of the present application. Vehicle 1 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, etc. A battery 2 is provided inside the vehicle 1, and the battery may be provided at the bottom, head or tail of the vehicle 1. Battery 2 may be used to power the vehicle 1, for example, battery 2 may be used as an operating power source for the vehicle 1. Vehicle 1 may also include a controller 102 and a motor 101, and the controller 102 is used to control the battery to power the motor 101, for example, for starting, navigating and operating power requirements of the vehicle 1 during driving.

[0059] In some embodiments of the present application, the battery can be used not only as an operating power source for the vehicle 1 , but also 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 .

[0060] In order to meet different power requirements, the battery 2 may include a plurality of battery cells, and a battery cell refers to the smallest unit that constitutes a battery module or a battery pack. A plurality of battery cells can be connected in series and / or in parallel via electrode terminals for use in various applications. The battery 2 mentioned in the present application includes a battery module or a battery pack. Among them, a plurality of battery cells can be connected in series, in parallel, or in mixed connection, and mixed connection refers to a mixture of series and parallel connection. In the embodiments of the present application, a plurality of battery cells can directly constitute a battery pack, or they can first constitute a battery module, and then the battery module constitutes a battery pack.

[0061] Figure 2 A schematic structural diagram of a battery 2 according to an embodiment of the present application is shown.

[0062] like Figure 2 As shown, the battery includes a battery case 4 and a battery cell (not shown), and the battery cell is accommodated in the battery case 4.

[0063] The battery box 4 can be a simple three-dimensional structure such as a single cuboid, cylinder or sphere, or a complex three-dimensional structure composed of simple three-dimensional structures such as cuboids, cylinders or spheres. The material of the battery box 4 can be alloy materials such as aluminum alloy, iron alloy, etc., or polymer materials such as polycarbonate, polyisocyanurate foam plastics, or composite materials such as glass fiber and epoxy resin.

[0064] The battery case 4 is used to accommodate battery cells, and the battery case 4 can be of various structures. In some embodiments, the battery case 4 can include a cover plate 42 and a case body 41, and the cover plate 42 and the case body 41 cover each other, and the cover plate 42 and the case body 41 together define a storage space for accommodating the battery cells 3. The case body 41 can be a hollow structure with one end open, and the cover plate 42 is a plate-like structure, and the cover plate 42 covers the open side of the case body 41 to form a battery case 4 with a storage space; the cover plate 42 and the case body 41 can also be a hollow structure with one side open, and the open side of the cover plate 42 covers the open side of the case body 41 to form a battery case 4 with a storage space. Of course, the cover plate 42 and the case body 41 can be of various shapes, such as a cylinder, a cuboid, etc.

[0065] In order to improve the sealing performance after the cover plate 42 is connected to the box body 41 , a sealing member, such as a sealant, a sealing ring, etc., may also be provided between the cover plate 42 and the box body 41 .

[0066] Assuming that the cover plate 42 covers the top of the box body 41 , the cover plate 42 can also be called an upper box cover, and the box body 41 can also be called a lower box cover.

[0067] In the battery 2, 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 mixed connection. Mixed connection means that multiple battery cells are connected in series and in parallel. Multiple battery cells can be directly connected in series, in parallel, or in mixed connection, and then the whole formed by the multiple battery cells is accommodated in the battery box 4; of course, multiple battery cells can also be connected in series, in parallel, or in mixed connection to form a battery module 201, and then multiple battery modules 201 are connected in series, in parallel, or in mixed connection to form a whole, and accommodated in the battery box 4.

[0068] Figure 3 A schematic structural diagram of a battery module 201 according to an embodiment of the present application is shown.

[0069] In some embodiments, Figure 2 and Figure 3 As shown, there are multiple battery cells 3, and the multiple battery cells 3 are first connected in series, parallel or mixed to form a battery module 201. The multiple battery modules 201 are then connected in series, parallel or mixed to form a whole, and are accommodated in the battery box 4.

[0070] The multiple battery cells 3 in the battery module 201 can be electrically connected via a busbar component to achieve parallel connection, series connection, or mixed connection of the multiple battery cells 3 in the battery module 201 .

[0071] In the present application, the battery cell 3 may include a lithium-ion battery cell, a sodium-ion battery cell or a magnesium-ion battery cell, etc., and the present embodiment is not limited thereto. The battery cell 3 is cylindrical in shape. The following embodiments are all described by taking a cylindrical battery cell as an example.

[0072] See also Figures 4 to 6 , Figure 4 An exploded view of a battery provided in an embodiment of the present application; Figure 5 A partial structural front view of a heat exchange component provided in an embodiment of the present application; Figure 6 for Figure 5 Cross-sectional view at AA in the middle.

[0073] First, as Figures 4 to 6 As shown, the present application provides a heat exchange component 5, which includes a first heat exchange part 51 and a second heat exchange part 52. The first heat exchange part 51 includes a first wall part 511, a first heat exchange chamber 512 formed by the first wall part 511, and two first openings arranged opposite to each other in the first direction X and connected to the first heat exchange chamber 512; the second heat exchange part 52 is sleeved outside the first heat exchange part 51, and the second heat exchange part 52 includes a second wall part 521 and two third wall parts 522 connected to the second wall part 521 on both sides of the first direction X, the third wall part 522 connects the first wall part 511 and the second wall part 521, and the first wall part 511, the second wall part 521 and the third wall part 522 enclose a second heat exchange chamber 523, wherein the first heat exchange chamber 512 is used to accommodate a first heat exchange medium, and the second heat exchange chamber 523 is used to accommodate a second heat exchange medium, and the second heat exchange medium can heat through phase change.

[0074] In the scheme of the embodiment of the present application, the heat exchange component 5 includes a first heat exchange part 51 and a second heat exchange part 52, the first heat exchange part 51 includes a first wall part 511, a first heat exchange chamber 512 enclosed by the first wall part 511, and two first openings arranged opposite to each other in the first direction X and connected to the first heat exchange chamber 512; the second heat exchange part 52 is sleeved outside the first heat exchange part 51, the second heat exchange part 52 includes a second wall part 521 and two third wall parts 522 connected to the second wall part 521 on both sides of the first direction X, the third wall part 522 connects the first wall part 511 and the second wall part 521, and the first wall part 511, the second wall part 521 and the third wall part 522 enclose a second heat exchange chamber 523. By setting the second heat exchange chamber 523 between the first heat exchange chamber 512 and the battery cell 3, the first heat exchange chamber 512 is used to accommodate the first heat exchange medium, and the second heat exchange chamber 523 is used to accommodate the second heat exchange medium that can change heat through phase change, so that the heat of the battery cell 3 is first exchanged with the second heat exchange medium in the second heat exchange chamber 523, and the second heat exchange medium undergoes a phase change, and then the first heat exchange medium in the first heat exchange chamber 512 transfers the heat of the second heat exchange chamber 523 to the outside to adjust the overall temperature of the battery 2. The second heat exchange chamber 523 plays a temperature buffer role between the battery cell 3 and the first heat exchange chamber 512 to smooth out the temperature fluctuation of the battery cell 3 and improve the service life of the battery 2.

[0075] Specifically, the heat exchange component 5 includes a first heat exchange portion 51, the first heat exchange portion 51 includes a first wall portion 511, a first heat exchange chamber 512 formed by the first wall portion 511, and two first openings arranged opposite to each other in a first direction X and connected to the first heat exchange chamber 512, and the first heat exchange chamber 512 is used to accommodate a first heat exchange medium. The material of the first wall 511 can be set by itself. The first wall 511 can be made of metal to make the first wall 511 have good heat transfer effect and structural strength. The first wall 511 encloses the first heat exchange chamber 512. The shape of the first heat exchange chamber 512 can be set by itself. For example, the first heat exchange chamber 512 is cylindrical or prismatic. The two first openings are connected to the first heat exchange chamber 512 so that the first heat exchange medium from the outside can be input and output from the first heat exchange chamber 512 through the two openings. Optionally, the two openings are arranged relative to each other along the first direction X so that the first heat exchange medium can fully flow in the first heat exchange chamber 512 to improve the heat exchange effect of the first heat exchange part 51. The first heat exchange medium flows in the first heat exchange chamber 512 for heat exchange. The first heat exchange medium can be cooling water, ethylene glycol, alcohol, etc. The first heat exchange medium will not undergo phase change when in working state.

[0076] The heat exchange component 5 includes a second heat exchange portion 52, which is sleeved outside the first heat exchange portion 51, so that when the heat exchange component 5 is assembled on the battery 2 box 4, the second heat exchange portion 52 is located between the battery cell 3 and the first heat exchange portion 51, and the second heat exchange portion 52 includes a second wall portion 521 and two third wall portions 522 connected to the second wall portion 521 on both sides of the first direction X, the first wall portion 511 and the second wall portion 521 are arranged at intervals, and the third wall portion 522 is connected to the first wall portion 511 and the second wall portion 521. Optionally, the first heat exchange portion 51 is located between the two third wall portions 522, the third wall portion 522 is penetrated with a second opening, the first opening and the second opening are connected, and the first heat exchange medium from the outside enters the first opening through the second opening; or the first heat exchange portion 51 partially extends out of the third wall portion 522, the third wall portion 522 is penetrated with a second opening, the first wall portion 511 extends out from the second opening, and the first heat exchange medium from the outside enters the first heat exchange medium through the first opening.

[0077] Optionally, the first heat exchange part 51 and the second heat exchange part 52 are integrally formed to improve the structural strength and sealing performance of the first heat exchange part 51 and the second heat exchange part 52; or the first heat exchange part 51 and the second heat exchange part 52 are separately prepared to facilitate the production and maintenance of the first heat exchange part 51.

[0078] The first wall portion 511, the second wall portion 521 and the third wall portion 522 enclose a second heat exchange chamber 523, and the second heat exchange chamber 523 and the first heat exchange chamber 512 are spaced apart by the first wall portion 511. Optionally, the second heat exchange chamber 523 surrounds the first heat exchange chamber 512, so that the first heat exchange chamber 512 can exchange heat with the second heat exchange chamber 523 in a timely manner.

[0079] The second heat exchange chamber 523 is used to accommodate the second heat exchange medium, which can transfer heat through phase change. The transition of a substance from one phase to another, the temperature is almost unchanged during the process, there is a wide temperature platform, and the absorption and release of heat are obvious. This process is called phase change. The system temperature of the phase change material is stable during the heat absorption and release process, and an approximate constant temperature effect can be achieved. When the battery 2 is working, the temperature of the battery cell 3 increases, and the temperature of the battery cell 3 enters the second heat exchange chamber 523 through the second wall 521. The second heat exchange medium in the second heat exchange chamber 523 changes heat through phase change, and the first heat exchange medium in the first heat exchange chamber 512 flows to take away the heat of the second heat exchange medium in the second heat exchange chamber 523, so that the second heat exchange medium can continue to change phases, so as to maintain the stability of the working temperature of the battery 2 and reduce the fluctuation of the working temperature of the battery 2. Optionally, the second heat exchange chamber 523 is a closed chamber to improve the problem that the second heat exchange medium overflows from the second heat exchange chamber 523 due to the increase in volume of the second heat exchange medium due to phase change.

[0080] Optionally, the second heat exchange medium may be an inorganic phase change material, an organic phase change material or a composite phase change material. Exemplarily, the second heat exchange medium is paraffin, fatty acid, crystalline hydrated salt, molten salt, metal or alloy, etc.

[0081] Optionally, the first wall portion 511 and the second wall portion 521 are made of metal to improve the thermal conductivity of the first wall portion 511 and the second wall portion 521 .

[0082] See also Figure 7 and Figure 8 , Figure 7 for Figure 5 Sectional view at the middle BB; Figure 8 A partial structural schematic diagram of the heat exchange component provided in an embodiment of the present application.

[0083] In some embodiments, Figure 4 , Figures 6 to 8 The second wall portion 521 includes an arc segment 5211, which is recessed toward the first heat exchange chamber 512, and the arc segment 5211 is connected to the two third wall portions 522 in the first direction X, and the arc segment 5211 is used to contact the battery cell.

[0084] In these embodiments, the second wall portion 521 includes an arc segment 5211 that is recessed toward the first heat exchange chamber 512, and the arc segment 5211 is connected to the two third wall portions 522 in the first direction X. The arc segment 5211 is used to contact the cylindrical battery cell 3 to improve the fit between the second wall portion 521 and the cylindrical battery cell 3, thereby improving the heat exchange effect of the heat exchange component 5 on the cylindrical battery cell 3.

[0085] Specifically, the heat exchange component 5 of the embodiment of the present application can be applied to a battery including a cylindrical battery cell 3. After the heat exchange component 5 and the battery cell are matched, the second wall portion 521 of the second heat exchange portion 52 contacts the battery cell, and the second wall portion 521 includes an arc-shaped end. The shell of the cylindrical battery cell has an arc, and the arc-shaped end can be well matched with the shell of the cylindrical battery cell 3.

[0086] Optionally, in order to improve the fit between the arc segment 5211 and the cylindrical battery cell 3 , the arc segment 5211 may be configured to be in an arc shape.

[0087] Optionally, the size of the cylindrical battery cell 3 in the first direction X is greater than or equal to the size of the second wall portion 521 in the first direction X, so the arc end is connected to the two third wall portions 522 in the first direction X, so that the arc segment 5211 can fit tightly to the shell of the cylindrical battery cell 3. Alternatively, if the size of the cylindrical battery cell 3 in the first direction X is smaller than the size of the second wall portion 521 in the first direction X, the size of the cylindrical battery cell 3 in the first direction X should be less than or equal to the size of the arc segment 5211 in the first direction X, so that the shell of the cylindrical battery cell 3 can fit tightly to the arc segment 5211.

[0088] In some embodiments, Figure 4 and Figure 8 As shown, multiple arc segments 5211 are arranged around the first direction X.

[0089] In these embodiments, a plurality of arc segments 5211 are arranged around the first direction X to increase the contact area between the heat exchange component 5 and the cylindrical battery cell 3 , thereby improving the heat exchange effect of the heat exchange component 5 on the cylindrical battery cell 3 .

[0090] Specifically, the shapes of the plurality of arc segments 5211 are the same or different. Optionally, the shapes and sizes of the plurality of arc segments 5211 are the same, so as to reduce the difficulty of processing the second wall portion 521 .

[0091] Optionally, multiple arc segments 5211 are continuously arranged around the first direction X to increase the contact area between the second wall portion 521 and the battery cell 3, thereby improving the heat exchange performance of the heat exchange component 5; or multiple arc segments 5211 are arranged at intervals around the first direction X to increase the space of the second heat exchange chamber 523 at the tip of the arc segment 5211, so that more second heat exchange medium can be accommodated at this position, thereby improving the heat exchange effect of the heat exchange component 5 at the tip of the arc segment 5211.

[0092] Exemplarily, 2 or 3 or 4 or 5 or 6 arc segments 5211 are provided on the second wall portion 521 .

[0093] Optionally, four arc segments 5211 are evenly arranged around the first direction X, and each arc segment 5211 is an arc with a central angle of 90 degrees, so that four adjacent arc segments 5211 can surround the cylindrical battery cell 3, thereby increasing the heat exchange area between the arc segments 5211 and the cylindrical battery cell 3.

[0094] In some embodiments, Figure 4 , Figures 6 to 8 As shown, the second wall portion 521 further includes a connecting segment 5212 , and adjacent arc segments 5211 are arranged at intervals and connected by the connecting segment 5212 .

[0095] In these embodiments, the second wall portion 521 also includes a connecting section 5212, and adjacent arc sections 5211 are arranged at intervals and connected by the connecting section 5212 to increase the space of the second heat exchange chamber 523 at the tip of the arc section 5211, so that more second heat exchange medium can be accommodated at this position, thereby improving the heat exchange effect of the heat exchange component 5 at the tip of the arc section 5211.

[0096] Specifically, the arc segment 5211 includes a middle segment close to the first wall portion 511 and a tip away from the first wall portion 511. The two adjacent arc segments 5211 are arranged at intervals. The connecting segment 5212 is arranged between the tips of the two arc segments 5211, and the tips of the two adjacent arc segments 5211 are respectively connected to the two sides of the connecting segment 5212. The connecting segment 5212 is connected to the third wall portion 522 on both sides of the first direction X to increase the volume of the second heat exchange chamber 523 at the tip position of the arc segment 5211 to increase the volume of the second heat exchange medium at this position.

[0097] Optionally, each connecting segment 5212 has the same size and shape. Exemplarily, the connecting segment 5212 is rectangular.

[0098] Optionally, the arc segment 5211 and the connecting segment 5212 are manufactured in one piece to enhance the structural strength of the second wall portion 521 .

[0099] See also Fig. 9 and Fig.10 , Fig. 9 A schematic diagram of the structure of a battery provided in an embodiment of the present application; Fig.10 for Fig. 9 Cross-sectional view at CC.

[0100] In some embodiments, Figure 4 , Figure 6 , Fig. 9 and Fig.10 As shown, the heat exchange component 5 also includes two confluence units 53 arranged relatively in the first direction X, at least one confluence unit 53 includes an external connection end 532 and a bracket 531, the bracket 531 is provided with a confluence channel, and the external connection end 532 is connected to the first heat exchange chamber 512 and the external environment through the confluence channel.

[0101] In these embodiments, the external terminal 532 is connected to the first heat exchange chamber 512 and the external environment through a confluence channel disposed in the bracket 531. The confluence channel is disposed in the bracket 531 to improve the reliability of the confluence channel and reduce the difficulty of preparing the confluence channel.

[0102] At least one confluence unit 53 includes an external connection end 532 and a bracket 531, which means that the heat exchange component 5 includes two confluence units 53 arranged opposite to each other in the first direction X, then both confluence units 53 include a bracket 531 and an external connection end 532, or one confluence unit 53 includes a bracket 531 and two external connection ends 532, and the other confluence unit 53 only includes the bracket 531. The bracket 531 is provided with a confluence flow channel, and the external connection end 532 is connected to the confluence flow channel of the bracket 531 and the external environment, so that the first heat exchange medium can be input and output from the confluence flow channel through the external connection end 532. The confluence flow channel of the bracket 531 is connected to the first heat exchange chamber 512, so that the confluence flow channel can exchange the first heat exchange medium with the first heat exchange chamber 512.

[0103] Exemplarily, the first heat exchange medium enters the first heat exchange chamber 512 from an external end 532 through the converging channel of the bracket 531 and the first opening of the first heat exchange part 51, and the first heat exchange medium enters the converging channel of the bracket 531 from another opening of the first heat exchange part 51, and is output to the outside through another external end 532.

[0104] Optionally, one end of the confluence channel is connected to the external end 532 and the other end is connected to the first heat exchange chamber 512. The confluence channel can be a pipe fixed to the bracket 531, which reduces the difficulty of setting up the confluence channel. For example, the confluence channel is a hose that is clamped or bonded to the bracket 531; or the confluence channel is opened in the bracket 531, reducing the size of the confluence unit 53 and improving the integration of the heat exchange component 5.

[0105] See also Fig.11 , Fig.11 for Fig.10 Schematic diagram of the enlarged structure at D in the middle.

[0106] In some embodiments, Figure 4 , Figure 6 , Figures 9 to 11 As shown, the confluence unit 53 also includes a connecting piece 533, one end of the connecting piece 533 is connected to the bracket 531, and the other end is sealed and connected to the first heat exchange part 51 and / or the second heat exchange part 52. The connecting piece 533 connects the first heat exchange chamber 512 and the confluence channel.

[0107] In these embodiments, the confluence unit 53 also includes a connecting piece 533, one end of the connecting piece 533 is connected to the bracket 531, and the other end thereof is sealed and connected to the first heat exchange part 51 and / or the second heat exchange part 52. The first heat exchange chamber 512 and the confluence channel are connected through the connecting piece 533. The connecting piece 533 has the effect of guiding the first heat exchange medium, connecting the first heat exchange part 51 and the second heat exchange part 52 and the bracket 531, and sealing the first heat exchange chamber 512, thereby improving the integration of the heat exchange component 5.

[0108] The connecting piece 533 is connected to the bracket 531 , and a connecting pipeline is arranged inside the connecting piece 533 so that the connecting piece 533 is connected to the converging channel and the first heat exchange chamber 512 .

[0109] The connecting piece 533 includes a first end and a second end arranged opposite to each other in the first direction X, the first end is connected to the bracket 531, the second end is connected to a side surface of the third wall portion 522 facing the bracket 531, or the second end is connected to the surface of the first wall portion 511, or the second end extends into the first heat exchange chamber 512, or the second end extends into the third wall portion 522 and is connected to the first heat exchange chamber 512.

[0110] Optionally, the connecting piece 533 and the first heat exchange part 51 and / or the second heat exchange part 52 are bonded or snap-connected, and the confluence unit 53 and the first heat exchange part 51 and / or the second heat exchange part 52 are fixed by the connecting piece 533 .

[0111] Optionally, the connecting piece 533 and the bracket 531 are manufactured integrally, or the connecting piece 533 is bonded or welded to the bracket 531 to improve the connection reliability between the connecting piece 533 and the bracket 531 .

[0112] In some embodiments, Figure 4 , Figure 6 , Figures 9 to 11 As shown, the third wall portion 522 includes a covering portion 5221 and a fixing portion 5222, the covering portion 5221 is connected to the second wall portion 521, the fixing portion 5222 extends along the first direction X and includes a first port and a second port arranged opposite to each other in the first direction X, at least a portion of the connecting piece 533 extends from the first port into the fixing portion 5222, and the second port is connected to the first heat exchange chamber 512.

[0113] In these embodiments, the third wall portion 522 includes a covering portion 5221 and a fixing portion 5222, the covering portion 5221 is connected to the second wall portion 521, the fixing portion 5222 extends along the first direction X and includes a first port and a second port arranged opposite to each other in the first direction X, at least a portion of the connecting piece 533 extends from the first port into the fixing portion 5222, the second port is connected to the first heat exchange chamber 512, and the first extended fixing portion 5222 improves the connection strength and sealing reliability between the third wall portion 522 and the connecting portion.

[0114] Specifically, the covering portion 5221 is arranged at one end of the second heat exchange chamber 523 in the first direction X, the fixing portion 5222 is connected to the covering portion 5221, and the fixing portion 5222 extends along the first direction X, the first wall portion 511 is arranged between the two fixing portions 5222 along the first direction X, the first heat exchange chamber 512 is connected to the external environment through the fixing portion 5222, and the second heat exchange chamber 523 is enclosed by the first wall portion 511, the second wall portion 521, the surface of the covering portion 5221 facing the second heat exchange chamber 523, and the surface of the fixing portion 5222 facing the second heat exchange chamber 523.

[0115] Optionally, the fixing portion 5222 and the first wall portion 511 are sealed and connected to improve the problem of mutual interference between the first heat exchange medium and the second heat exchange medium.

[0116] A portion of the connecting piece 533 extends into the fixing portion 5222 , and the connecting piece 533 and the fixing portion 5222 are sealed and connected.

[0117] Optionally, the inner surface of the fixing portion 5222 is provided with a first sealing groove around the first direction X, and the fixing portion 5222 further includes a sealing member 5223, at least part of the sealing member 5223 is accommodated in the first sealing groove, and / or, the surface of the connecting member 533 is provided with a second sealing groove around the first direction X, and the fixing portion 5222 further includes a sealing member 5223, at least part of the sealing member 5223 is accommodated in the second sealing groove, so as to improve the sealing performance of the connecting member 533 and the fixing portion 5222. Exemplarily, the sealing member 5223 is a sealing ring or a sealant.

[0118] Optionally, the connecting piece 533 is made of elastic material to improve the sealing performance between the connecting piece 533 and the fixing portion 5222 .

[0119] In some embodiments, Figure 4 and Fig. 9 As shown, at least one bracket 531 is provided with a fixing groove 5311 , and the fixing groove 5311 is used to accommodate at least part of the battery cell 3 .

[0120] In these embodiments, at least one bracket 531 is provided with a fixing groove 5311 so that the fixing groove 5311 can be used to accommodate at least part of the battery cell 3, so that the heat exchange component 5 also has the function of fixing the battery cell 3, thereby improving the practicality of the heat exchange component 5.

[0121] At least one bracket 531 is provided with a fixing groove 5311, and the fixing groove 5311 and the converging flow channel are arranged at intervals. When the battery cell 3 and the heat exchange component 5 are assembled, the battery cell 3 is partially accommodated in the fixing groove 5311, and the fixing groove 5311 has a limiting effect on the battery cell 3. Optionally, both brackets 531 are provided with fixing grooves 5311, and both ends of the battery cell 3 in the first direction X are accommodated in the two fixing grooves 5311 corresponding to the first direction X, so as to improve the fixing effect of the bracket 531 on the battery cell 3.

[0122] Optionally, the fixing groove 5311 is arranged to penetrate the bracket 531 , and the bracket 531 is sleeved on the battery cell 3 , so as to enhance the fixing effect of the bracket 531 on the battery cell 3 .

[0123] In some embodiments, Figure 4 As shown, the bracket 531 is further provided with a recessed receiving groove, which is connected to at least two fixing grooves 5311 , and is used to receive the connecting piece 31 for maintaining electrical connection between at least two battery cells 3 .

[0124] In these embodiments, a receiving groove is recessed on the bracket 531 , and the receiving groove is connected to at least two fixing grooves 5311 , so that the fixing groove 5311 can receive and fix the electrical connecting piece 31 of the battery cell 3 , thereby improving the practicality of the heat exchange component 5 .

[0125] Adjacent battery cells 3 are electrically connected via a connector, which is disposed on a surface of the bracket 531 that faces away from each other. For example, the connector is a copper bar or an aluminum bar. For example, one connector can connect 2, 3, or 5 battery cells 3.

[0126] In some embodiments, Figure 4 , Figure 7 and Figure 8 As shown, at least one of the first wall portion 511 and the second wall portion 521 is a heat sink.

[0127] In these embodiments, at least one of the first wall portion 511 and the second wall portion 521 is a heat spreader to enhance the heat exchange effect of the heat exchange component 5 .

[0128] The heat spreader is a vacuum cavity with a microstructured inner wall, usually made of copper. When heat is transferred from the heat source to the evaporation zone, the coolant in the cavity begins to vaporize after being heated in a low vacuum environment. At this time, it absorbs heat energy and expands rapidly in volume. The gas phase cooling medium quickly fills the entire cavity. When the gas phase working medium contacts a relatively cold area, condensation occurs. The accumulated heat during evaporation is released through the condensation phenomenon, and the condensed coolant returns to the evaporation heat source through the microstructured capillary channels. This operation will be repeated in the cavity.

[0129] Optionally, the first wall portion 511 , the second wall portion 521 and the third wall portion 522 are all connected by a heat spreader to improve the heat exchange performance of the heat exchange component 5 .

[0130] In a second aspect, an embodiment of the present application provides a battery, comprising a battery cell and a heat exchange component according to an embodiment of the first aspect, wherein the heat exchange component is in contact with the battery cell.

[0131] The battery provided in the embodiment of the present application has the same technical effect as the battery case provided in any of the above embodiments, which will not be described in detail here.

[0132] In a third aspect, an embodiment of the present application provides an electrical device, comprising a battery as in the embodiment of the second aspect.

[0133] The electric device provided in the embodiment of the present application has the same technical effect as the battery provided in the embodiment of the present application, and will not be described in detail here.

[0134] In some embodiments, Figures 1 to 11As shown, the heat exchange component 5 includes a first heat exchange part 51, a second heat exchange part 52 and a confluence unit 53. The first heat exchange part 51 includes a first wall part 511, a first heat exchange chamber 512 formed by the first wall part 511, and two first openings arranged opposite to each other in the first direction X and connected to the first heat exchange chamber 512. The first heat exchange chamber 512 is used to accommodate a first heat exchange medium. The second heat exchange part 52 is sleeved outside the first heat exchange part 51. The second heat exchange part 52 includes a second wall part 521 and two second openings connected to the second wall part 521 on both sides of the first direction X. The third wall portion 522 is connected to the first wall portion 511 and the second wall portion 521. The first wall portion 511, the second wall portion 521 and the third wall portion 522 are enclosed to form a second heat exchange chamber 523. The second heat exchange chamber 523 is used to accommodate a second heat exchange medium. The second heat exchange medium can be heated by phase change. The second wall portion 521 includes an arc segment 5211 and a connecting segment 5212. The arc segment 5211 is recessed toward the first heat exchange chamber 512, and the arc segment 5211 is connected to the two third wall portions 522 in the first direction X. The plurality of arc segments 5211 is arranged around the first direction X, adjacent arc segments 5211 are arranged at intervals and connected by connecting segments 5212, and the arc segments 5211 are used to contact the battery monomer 3; two confluence units 53 are arranged opposite to each other in the first direction X, and the confluence unit 53 includes an external terminal 532, a bracket 531 and a connecting piece 533, the bracket 531 is provided with a confluence flow channel, one end of the connecting piece 533 is connected to the bracket 531, and the other end thereof is sealed and connected to the first heat exchange part 51 and / or the second heat exchange part 52, and the connecting piece 533 connects the first heat exchange chamber 512 and the confluence flow channel The third wall portion 522 includes a covering portion 5221 and a fixing portion 5222, the covering portion 5221 is connected to the second wall portion 521, the fixing portion 5222 extends along the first direction X and includes a first port and a second port arranged opposite to each other in the first direction X, at least part of the connecting piece 533 extends from the first port into the fixing portion 5222, the second port is connected to the first heat exchange chamber 512, a fixing groove 5311 is provided on the bracket 531, and the fixing groove 5311 is used to accommodate at least part of the battery cells 3, and the first wall portion 511 and the second wall portion 521 are heat spreaders.

[0135] In the scheme of the embodiment of the present application, the heat exchange component 5 includes a first heat exchange part 51 and a second heat exchange part 52, the first heat exchange part 51 includes a first wall part 511, a first heat exchange chamber 512 enclosed by the first wall part 511, and two first openings arranged opposite to each other in the first direction X and connected to the first heat exchange chamber 512; the second heat exchange part 52 is sleeved outside the first heat exchange part 51, the second heat exchange part 52 includes a second wall part 521 and two third wall parts 522 connected to the second wall part 521 on both sides of the first direction X, the third wall part 522 connects the first wall part 511 and the second wall part 521, and the first wall part 511, the second wall part 521 and the third wall part 522 enclose a second heat exchange chamber 523. By setting the second heat exchange chamber 523 between the first heat exchange chamber 512 and the battery cell 3, the first heat exchange chamber 512 is used to accommodate the first heat exchange medium, and the second heat exchange chamber 523 is used to accommodate the second heat exchange medium that can change heat through phase change, so that the heat of the battery cell 3 is first exchanged with the second heat exchange medium in the second heat exchange chamber 523, and the second heat exchange medium undergoes a phase change, and then the first heat exchange medium in the first heat exchange chamber 512 transfers the heat of the second heat exchange chamber 523 to the outside to adjust the overall temperature of the battery 2. The second heat exchange chamber 523 plays a temperature buffer role between the battery cell 3 and the first heat exchange chamber 512 to smooth out the temperature fluctuation of the battery cell 3 and improve the service life of the battery 2.

[0136] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; 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 present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A heat exchange component, characterized in that: include, The first heat exchange portion comprises a first wall portion, a first heat exchange chamber formed by the first wall portion, and two first openings arranged opposite to each other in a first direction and communicating with the first heat exchange chamber; The second heat exchange portion is sleeved outside the first heat exchange portion, the second heat exchange portion includes a second wall portion and two third wall portions connected to the second wall portion on both sides of the first direction, the third wall portion connects the first wall portion and the second wall portion, and the first wall portion, the second wall portion and the third wall portion enclose a second heat exchange chamber, The first heat exchange chamber is used to accommodate a first heat exchange medium, and the second heat exchange chamber is used to accommodate a second heat exchange medium, and the second heat exchange medium can transfer heat through phase change.

2. The heat exchange component according to claim 1, characterized in that: The second wall portion includes an arc segment, the arc segment is recessed toward the first heat exchange chamber, and the arc segment is connected to the two third wall portions in the first direction, and the arc segment is used to contact the battery cell.

3. The heat exchange component according to claim 2, characterized in that: A plurality of arc segments are arranged around the first direction.

4. The heat exchange component according to claim 2, characterized in that: The second wall portion further includes a connecting segment, and adjacent arc segments are arranged at intervals and connected by the connecting segment.

5. The heat exchange component according to claim 1, characterized in that: The heat exchange component also includes two confluence units arranged opposite to each other in the first direction, at least one of the confluence units includes an external terminal and a bracket, the bracket is provided with a confluence channel, and the external terminal is connected to the first heat exchange chamber and the external environment through the confluence channel.

6. The heat exchange component according to claim 5, characterized in that: The confluence unit further includes a connecting piece, one end of which is connected to the bracket, and the other end of which is sealed and connected to the first heat exchange part and / or the second heat exchange part, and the connecting piece connects the first heat exchange chamber and the confluence channel.

7. The heat exchange component according to claim 6, characterized in that: The third wall portion includes a covering portion and a fixing portion, the covering portion is connected to the second wall portion, the fixing portion extends along the first direction and includes a first port and a second port arranged opposite to each other in the first direction, at least a portion of the connecting piece extends from the first port into the fixing portion, and the second port is connected to the first heat exchange chamber.

8. The heat exchange component according to claim 5, characterized in that: At least one of the brackets is provided with a fixing groove, and the fixing groove is used to accommodate at least part of the battery monomer.

9. The heat exchange component according to claim 8, characterized in that: The bracket is also provided with a recessed receiving groove, the receiving groove is connected to at least two of the fixing grooves, and the receiving groove is used to receive a connecting piece that keeps at least two battery cells electrically connected.

10. The heat exchange component according to claim 1, characterized in that: At least one of the first wall portion and the second wall portion is a heat sink.

11. A battery, characterized in that: The invention comprises a battery cell and the heat exchange component according to any one of claims 1 to 10, wherein the heat exchange component is in contact with the battery cell.

12. An electrical device, characterized in that: The battery comprising the battery as claimed in claim 11 above.

Images