Heat dissipation structure, battery and electric equipment

Abstract

The utility model discloses a heat dissipation structure, a battery and electric equipment, the heat dissipation structure comprises a heat dissipation assembly and at least one heat exchange piece, the heat exchange piece is provided with at least one heat exchange part, and the heat exchange part of at least part of the heat exchange piece is in contact with a pole of a battery cell so as to exchange heat with the corresponding battery cell; the heat dissipation assembly is connected with the heat exchange piece and used for transferring heat of the heat exchange piece to the outside. According to the technical scheme provided by the embodiment of the invention, the heat dissipation effect can be improved.

Description

Technical Field

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

[0002] A battery generally includes a battery cell and a heat dissipation structure, and the heat dissipation structure is used to dissipate heat from the battery cell. However, the heat dissipation effect of the heat dissipation structure in the related art is relatively poor. Utility Model Content

[0003] In order to solve the above technical problems, the purpose of this application is to provide a heat dissipation structure, a battery and an electrical device.

[0004] A first aspect of the present application provides a heat dissipation structure for adjusting the temperature of a battery cell. The heat dissipation structure includes a heat dissipation component and at least one heat exchanger. The heat exchanger is provided with at least one heat exchange portion. At least part of the heat exchange portion of the heat exchanger contacts the pole of the battery cell to exchange heat with the corresponding battery cell. The heat dissipation component is connected to the heat exchanger to transfer the heat of the heat exchanger to the outside.

[0005] The technical solution provided in the embodiment of the present application includes a heat dissipation component and at least one heat exchanger, the heat exchanger is connected to the heat dissipation component, and the heat exchanger is provided with at least one heat exchange part, the heat exchange part is used to exchange heat with the corresponding battery cell to absorb the heat generated by the battery cell, thereby dissipating heat and cooling the battery cell, and the heat absorbed by the heat exchange part is transferred to the heat dissipation component, and the heat dissipation component transfers the heat to the outside. Among them, the heat exchange part of at least part of the heat exchange part contacts the pole of the battery cell, so that the heat exchange part exchanges heat with the pole of the corresponding battery cell, and the heat generated by the battery cell is transferred to the corresponding heat exchange part through the pole. Since the pole is in direct contact with the heat exchange part, the heat will be quickly transferred to the corresponding heat exchange part, so that the heat at the pole position is reduced and the temperature drops, so that the pole of the battery cell can work at a suitable temperature, thereby improving the working performance of the battery cell. Compared with the solution in the related art in which a water cooling plate is arranged on the periphery of the battery cell, part of the heat exchange part in the heat dissipation structure of the present application is arranged at the pole position corresponding to the battery cell and in contact with the corresponding pole, which can efficiently transfer the heat of the pole to the heat dissipation component, thereby dissipating heat and cooling the pole so that the battery cell maintains stable working performance.

[0006] In some embodiments of the present application, part of the heat exchange portion includes a first surface, the first surface is used to contact the pole, and the first surface is in contact with the corresponding pole. Here, the first surface is in contact with the corresponding pole, thereby increasing the contact area between the heat dissipation portion and the corresponding pole, thereby improving the heat transfer efficiency between the two.

[0007] In some embodiments of the present application, the first surface is attached to the circumferential side of the pole, and the contour of the first surface is at least partially adapted to the circumferential contour of the pole. Here, the contour of the first surface is at least partially adapted to the circumferential contour of the pole, making it more convenient to attach the heat exchange portion to the corresponding pole.

[0008] In some embodiments of the present application, the heat exchange part is formed with a receiving groove, the receiving groove is used to receive the corresponding pole, and the first surface is the inner surface of the receiving groove. Here, the heat exchange part is formed with the receiving groove, so that the heat exchange part forms a surrounding structure for the pole, so that the positions of the two can remain relatively stable.

[0009] In some embodiments of the present application, part of the heat exchange portion includes a second surface, and the second surface is used to fit the end surface of the corresponding battery cell. Here, by fitting the second surface to the end surface of the corresponding battery cell, heat dissipation and cooling can be conveniently implemented for the end surface of the battery cell.

[0010] In some embodiments of the present application, a pole is provided on the end face, a side of the heat exchange part away from the end face has a first distance from the end face, a side of the pole away from the end face has a second distance from the end face, and the first distance is smaller than the second distance. Here, since the first distance is smaller than the second distance, the interference of the heat exchange part with other components in the battery is reduced, and the layout of the heat exchange part is convenient.

[0011] In some embodiments of the present application, the heat exchanger includes a plurality of heat exchange parts, and the plurality of heat exchange parts are evenly distributed along the extension direction of the heat exchanger. Here, the plurality of heat exchange parts may correspond to different poles, so that one heat exchanger can transfer heat with a plurality of poles, thereby simplifying the structure.

[0012] In some embodiments of the present application, the heat exchange element includes a first side and a second side that are arranged opposite to each other, a plurality of heat exchange parts are arranged on the first side, or a plurality of heat exchange parts are arranged on the second side, or the first side and the second side are alternately provided with heat exchange parts. Here, the heat exchange part can be arranged on the first side or the second side to adapt to different layouts of the plurality of battery cells.

[0013] In some embodiments of the present application, there are multiple heat exchangers, which are arranged in sequence along a first direction, and multiple heat exchange parts are provided on the heat exchanger, which are arranged in sequence on the corresponding heat exchanger along a second direction; wherein the first direction and the second direction are arranged at an angle. Here, the multiple heat dissipation parts in the heat dissipation structure form a matrix structure so as to correspond to the arrangement structure of the multiple battery cells.

[0014] In some embodiments of the present application, the plurality of heat exchangers include a first heat exchanger and a second heat exchanger, and the first heat exchanger and the second heat exchanger are attached to opposite sides of the pole. Here, the two heat exchangers correspond to different sides of the pole, and heat is transferred to the heat dissipation component by different heat exchangers, so that the heat distribution is more dispersed and the heat dissipation and cooling effect is better.

[0015] In some embodiments of the present application, the first heat exchanger extends in a straight line, and the second heat exchanger includes a bent section and a straight section, and the bent sections and the straight sections are arranged alternately. Here, through the cooperation of the first heat exchanger and the second heat exchanger, the heat dissipation structure can be adapted to the arrangement structure of multiple battery cells.

[0016] In some embodiments of the present application, the plurality of heat exchangers further include a third heat exchanger, and the third heat exchanger is attached to the peripheral side of the battery cell. Here, the third heat exchanger is attached to the peripheral side of the shell of the battery cell, the contact area between the battery cell and the heat dissipation structure is increased, and the efficiency of heat transfer is correspondingly improved, thereby improving the heat dissipation effect of the heat dissipation structure.

[0017] In some embodiments of the present application, the heat exchange part includes an insulating layer, and the insulating layer is used to fit the corresponding pole. Here, by providing the insulating layer, the heat exchange part and the corresponding pole can be insulated to reduce the possibility of the pole outputting electrical energy to the heat exchange element, thereby reducing the influence of the heat exchange element on the battery cell.

[0018] In some embodiments of the present application, the heat dissipation assembly includes a pump body and a heat dissipation element, a heat exchange medium flows in the heat exchange element, and the pump body is used to drive the heat exchange medium to flow between the heat exchange part and the heat dissipation element. Here, the heat transfer from the heat exchange element to the heat dissipation element is realized by driving the heat exchange medium in the heat exchange element to flow through the pump body, and the heat dissipation efficiency is high.

[0019] The second aspect of the present application provides a battery, comprising a shell, at least one battery cell and the heat dissipation structure of any one of the first aspects, at least one battery cell is stacked to form a battery cell group, and the battery cell group is arranged in the shell; the heat exchange part in the heat dissipation structure is arranged corresponding to the battery cell.

[0020] In the technical solution of the embodiment of the present application, since the battery includes the heat dissipation structure of the first aspect, part of the heat exchange part in the heat dissipation structure is arranged at the pole position of the corresponding battery cell and contacts the corresponding pole, which can efficiently transfer the heat of the pole to the heat dissipation component, thereby dissipating heat and cooling the pole so that the battery maintains stable working performance.

[0021] A third aspect of the present application provides an electrical device, comprising the electrical device and the battery of the second aspect, wherein the battery is electrically connected to the electrical device.

[0022] In the technical solution of the embodiment of the present application, since it includes the battery of the second aspect, the heat dissipation structure in the battery can dissipate heat for the poles of the battery cells, and can efficiently transfer the heat of the poles to the heat dissipation component, thereby dissipating heat and cooling the poles, so that the battery can stably output electrical energy to the electrical appliances. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0024] Figure 1 A schematic diagram of the contact between the heat exchange part and the pole in the heat dissipation structure provided in an embodiment of the present application;

[0025] Figure 2 A schematic diagram of the structure of the first surface in the heat dissipation structure provided in an embodiment of the present application;

[0026] Figure 3 A schematic diagram of a heat exchange portion in a heat dissipation structure provided in an embodiment of the present application being attached to the peripheral side of a pole;

[0027] Figure 4 A schematic diagram of the structure of the second surface in the heat dissipation structure provided in an embodiment of the present application;

[0028] Figure 5 A schematic diagram of the structure of a receiving slot in a heat dissipation structure provided in an embodiment of the present application;

[0029] Figure 6 A schematic diagram of the arrangement of the heat exchange parts in the heat dissipation structure provided in an embodiment of the present application;

[0030] Figure 7 A schematic diagram of the structure of the bent section and the straight section in the heat dissipation structure provided in an embodiment of the present application;

[0031] Figure 8 A schematic diagram of the arrangement of heat exchange components in the heat dissipation structure provided in an embodiment of the present application;

[0032] Fig. 9 A schematic diagram of the structure of a battery provided in an embodiment of the present application;

[0033] Fig.10 A schematic diagram of the structure of the first heat exchange element and the second heat exchange element in the heat dissipation structure provided in an embodiment of the present application;

[0034] Fig.11 A schematic diagram of the structure of the first heat exchange element and the third heat exchange element in the heat dissipation structure provided in an embodiment of the present application;

[0035] Fig.12 A schematic diagram of a structure in which an insulating layer is arranged on one side of a structural layer in a heat dissipation structure provided in an embodiment of the present application;

[0036] Fig.13 A schematic diagram of the structure of an insulating layer in a heat dissipation structure provided in an embodiment of the present application;

[0037] Fig.14 A schematic diagram of the structure of the heat dissipation structure provided in an embodiment of the present application;

[0038] Fig.15 A schematic diagram of the structure of an electrical device provided in an embodiment of the present application.

[0039] Description of reference numerals:

[0040] 1-heat exchange element; 1a-first heat exchange element; 1b-second heat exchange element; 1c-third heat exchange element; 11-heat exchange part; 111-first surface; 112-second surface; 113-accommodating groove; 12-first side; 13-second side; 14-bending section; 15-straight section; 16-insulating layer; 17-structural layer; 2-heat dissipation component; 21-pump body; 22-heat dissipation element; 3-battery cell; 31-pole; 32-end face; 4-shell; 5-electrical appliance. DETAILED DESCRIPTION

[0041] The following embodiments of the technical solution of the present application are 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.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0043] In the description of the embodiments of the present application, the technical terms "first", "second", "third", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship 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.

[0044] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0045] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0046] In the description of the embodiments of the present application, the orientation or position relationship indicated by technical terms such as "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the accompanying drawings. They 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, operated or used in a specific orientation. Therefore, they should not be understood as limitations on the embodiments of the present application.

[0047] 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 those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0048] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the technical term "contact" should be understood in a broad sense, and may be direct contact or contact through an intermediate medium layer. It may be contact with essentially no interaction force between the two contacting parties, or it may be contact with interaction force between the two contacting parties.

[0049] Below, this application is described in detail.

[0050] Batteries are increasingly used in life and industry. Batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, and aerospace and other fields. With the continuous expansion of battery application areas, the market demand is also constantly expanding.

[0051] Batteries are usually made up of multiple cells connected in series or in parallel. When working, the cells generate heat, which causes the temperature of the cells to rise. Excessive temperature will affect the working performance of the cells, so a heat dissipation structure is needed. In the related technology, a water cooling plate is set up, and the water cooling plate is located on the side of the cell. The heat generated by the cell is transferred to the water cooling plate through the side wall of the side. However, the poles of the cell and the two ends of the cell lack corresponding heat dissipation, resulting in heat accumulation at the ends of the cell and the poles, causing the temperature of the poles to rise, affecting the working performance of the cell.

[0052] In view of the problems existing in the above-mentioned related technologies, this application proposes a heat dissipation structure. Figure 1 , Figure 2 and Figure 3 The heat dissipation structure includes a heat dissipation component 2 and at least one heat exchanger 1. The heat exchanger 1 is provided with at least one heat exchange portion 11. At least part of the heat exchange portion 11 of the heat exchanger 1 contacts the pole 31 of the battery cell 3 to exchange heat with the corresponding battery cell 3; the heat dissipation component 2 is connected to the heat exchanger 1 to transfer the heat of the heat exchanger 1 to the outside.

[0053] In the embodiment of the present application, the heat exchange element 1 may include one or more heat exchange parts 11, and the multiple heat exchange parts 11 can respectively contact different parts of the same battery cell 3. For example, one heat exchange part 11 on the heat exchange element 1 is used to contact the pole 31 of the battery cell 3, and another heat exchange part 11 is used to contact the end face 32 of the battery cell 3; the multiple heat exchange parts 11 can also respectively contact the same parts of different battery cells 3, or the multiple heat exchange parts 11 are used to contact different parts of different battery cells 3.

[0054] In the embodiment of the present application, the heat exchange portion 11 of at least part of the heat exchange element 1 contacts the pole 31 of the battery cell 3. The heat dissipation structure may include multiple heat exchange elements 1, and the heat exchange portions 11 on part of the heat exchange elements 1 are used to contact the pole 31 of the battery cell 3, and the heat exchange portions 11 on another part of the heat exchange elements 1 are used to contact the surrounding side and other parts of the battery cell 3.

[0055] In the embodiment of the present application, the heat exchange portion 11 and the pole 31 of the corresponding battery cell 3 may be in line contact or surface contact, as long as heat can be transferred between the two by heat conduction. In addition, the heat exchange portion 11 may be in contact with the side of the pole 31 or the top of the pole 31.

[0056] In the embodiment of the present application, the heat exchanger 1 has many possible forms. The heat exchanger 1 can be a plate-shaped structure, a rod-shaped structure, etc., which transfers heat to the heat dissipation component 2 by heat conduction; the heat exchanger 1 can also be a heat pipe, in which capillaries are provided, and a heat exchange medium flows in the capillaries, and heat is transferred to the heat dissipation component 2 by heat convection; the heat exchanger 1 can also be a tubular structure, in which a heat exchange medium circulates, and heat is transferred to the heat dissipation component 2 by the heat exchange medium.

[0057] In the embodiment of the present application, the corresponding parts of the heat exchanger 1 and the battery cell 3 can be connected by abutment, bonding, welding, fastener connection, etc. The heat exchanger 1 can also provide support and limitation for the battery cell 3 to improve the stability of the battery cell 3 in the battery.

[0058] The heat dissipation structure of the embodiment of the present application includes a heat dissipation component 2 and at least one heat exchanger 1. The heat exchanger 1 is connected to the heat dissipation component 2. The heat exchanger 1 is provided with at least one heat exchange portion 11. The heat exchange portion 11 is used to exchange heat with the corresponding battery cell 3 to absorb the heat generated by the battery cell 3, thereby dissipating heat and cooling the battery cell 3. The heat absorbed by the heat exchange portion 11 is transferred to the heat dissipation component 2, and the heat dissipation component 2 transfers the heat to the outside.

[0059] Among them, the heat exchange part 11 of at least part of the heat exchange element 1 contacts the pole 31 of the battery cell 3, so that the heat exchange part 11 exchanges heat with the pole 31 of the corresponding battery cell 3, and the heat generated by the battery cell 3 is transferred to the corresponding heat exchange part 11 through the pole 31. Since the pole 31 is in direct contact with the heat exchange part 11, the heat will be quickly transferred to the corresponding heat exchange part 11, so that the heat at the position of the pole 31 is reduced and the temperature is lowered, so that the pole 31 of the battery cell 3 can operate at an appropriate temperature, thereby improving the working performance of the battery cell 3.

[0060] Compared with the solution in the related art in which a water cooling plate is arranged on the side around the battery cell 3, in the heat dissipation structure of the present application, part of the heat exchange part 11 is arranged at the position of the pole 31 corresponding to the battery cell 3 and is in contact with the corresponding pole 31, which can efficiently transfer the heat of the pole 31 to the heat dissipation component 2, thereby dissipating heat and cooling the pole 31, so that the battery cell 3 maintains stable working performance.

[0061] In order to improve the heat exchange efficiency of the heat exchange portion 11 and the corresponding pole 31, refer to Figure 2 , Figure 3 and Figure 4 In some possible embodiments of the present application, the partial heat exchange portion 11 includes a first surface 111 , and the first surface 111 is used to contact the pole 31 , and the first surface 111 is in contact with the corresponding pole 31 .

[0062] In the embodiment of the present application, the partial heat exchange portion 11 refers to the heat exchange portion 11 that is in contact with the pole 31. The partial heat exchange portion 11 can be the partial heat exchange portion 11 on a heat exchange element 1, or it can be the heat exchange portion 11 on a partial heat exchange element 1 among multiple heat exchange elements 1.

[0063] In the embodiment of the present application, the first surface 111 can be a plane, the first surface 111 can also be a curved surface, or, the first surface 111 is a combination of a plane and a curved surface. The structure of the first surface 111 is arranged corresponding to the structure of the pole 31 so that the two fit together. In addition, the structures of the first surfaces 111 of different heat exchange parts 11 can be the same or different.

[0064] In the embodiment of the present application, the first surface 111 can be attached to the end surface of the pole 31 or to the circumferential surface of the pole 31 . For example, the first surface 111 is a cylindrical surface and is attached to the circumferential surface of the pole 31 .

[0065] The heat dissipation structure of the embodiment of the present application, the heat exchange part 11 for contacting the pole 31 includes a first surface 111, and the first surface 111 is arranged to fit the corresponding pole 31, thereby increasing the contact area between the heat dissipation part and the corresponding pole 31, so that heat can be transferred from the pole 31 to the corresponding heat exchange part 11 more quickly, thereby improving the heat transfer efficiency between the two.

[0066] In order to facilitate the heat transfer between the heat exchange part 11 and the corresponding pole 31, refer to Figure 2 , Figure 3 and Figure 4 In some possible embodiments of the present application, the first surface 111 is attached to the circumferential side of the pole 31 , and the contour of the first surface 111 is at least partially matched to the circumferential contour of the pole 31 .

[0067] In the embodiment of the present application, the first surface 111 is attached to the peripheral side of the pole 31. The first surface 111 may be completely attached to the peripheral side of the pole 31, or may be partially attached to the peripheral side of the pole 31; Figure 8 The first surface 111 may be arranged around the pole 31, or refer to Figure 3 The first surface 111 is disposed on one side of the pole 31 .

[0068] The first surface 111 corresponds to different pole 31 structures and may have a variety of possible structural forms. In one possible embodiment, the pole 31 is a cylindrical structure, the first surface 111 is a cylindrical surface, and the first surface 111 is concave relative to the heat exchange portion 11; in another possible embodiment, the pole 31 is an elliptical columnar structure, and the first surface 111 is composed of a plane and arc surfaces at both ends of the plane.

[0069] The heat dissipation structure of the embodiment of the present application has little effect on the connection between the pole 31 and other components because the first surface 111 is arranged on the circumferential side of the pole 31, and the contour of the first surface 111 is at least partially compatible with the circumferential contour of the pole 31, so that the fitting between the heat exchange part 11 and the corresponding pole 31 is more convenient, and it is also convenient for the pole 31 to transfer heat to the corresponding heat exchange part 11 from multiple directions.

[0070] In order to facilitate the relative fixation of the heat exchange part 11 and the corresponding pole 31, refer to Figure 5 In some possible embodiments of the present application, the heat exchange portion 11 is formed with a receiving groove 113 , the receiving groove 113 is used to receive the corresponding pole 31 , and the first surface 111 is the inner surface of the receiving groove 113 .

[0071] In an embodiment of the present application, the accommodating groove 113 can be opened in the heat exchange part 11, or the heat exchange part 11 is bent so that one side of the heat exchange part 11 is concave to form the accommodating groove 113, or the heat exchange part 11 is an annular structure, and the accommodating groove 113 is formed on the inner side of the annular structure to be sleeved on the pole 31.

[0072] In the heat dissipation structure of the embodiment of the present application, since the heat exchange part 11 is formed with a receiving groove 113, the corresponding pole 31 is arranged in the receiving groove 113, so that the heat exchange part 11 forms a surrounding structure for the pole 31, so that the positions of the two can remain relatively stable, so that the heat of the pole 31 can be transferred to the corresponding heat exchange part 11.

[0073] In order to achieve heat dissipation of the end surface 32 of the battery cell 3, refer to Figure 3 and Figure 4 In some possible embodiments of the present application, part of the heat exchange portion 11 includes a second surface 112 , and the second surface 112 is used to fit the end surface 32 of the corresponding battery cell 3 .

[0074] In the embodiment of the present application, the heat exchange portion 11 includes the second surface 112, and the heat exchange portion 11 may be a heat exchange portion 11 that contacts the pole 31, or may be a heat exchange portion 11 that does not contact the pole 31. For example, the heat exchange portion 11 that contacts the pole 31 includes both the first surface 111 and the second surface 112, so as to be respectively attached to the pole 31 and the end surface 32 of the corresponding battery cell 3.

[0075] In the embodiment of the present application, the end face 32 of the battery cell 3 may be an end face 32 provided with a pole 31, or may be an end face 32 not provided with a pole 31. It can be understood that the end face 32 of the battery cell 3 provided with a pole 31 is arranged adjacent to the peripheral side of the pole 31. For example, the end face 32 of the battery cell 3 is an end face 32 provided with a pole 31, and the heat exchange portion 11 includes both a first surface 111 and a second surface 112. The first surface 111 and the second surface 112 are arranged adjacent to each other to fit the end face 32 of the battery cell 3 and the peripheral side surface of the pole 31, respectively.

[0076] The heat dissipation structure of the embodiment of the present application has a second surface 112 provided on part of the heat exchange portion 11. The second surface 112 is attached to the end surface 32 of the corresponding battery cell 3, so that the end surface 32 of the battery cell 3 can be easily cooled and dissipated, thereby maintaining a suitable temperature near the end surface 32 of the battery cell 3 so that the battery cell 3 maintains stable working performance.

[0077] In order to facilitate the connection of the pole 31 with other components, refer to Figure 4 In some possible embodiments of the present application, a pole 31 is provided at the end surface 32, a side of the heat exchange portion 11 away from the end surface 32 has a first distance from the end surface 32, a side of the pole 31 away from the end surface 32 has a second distance from the end surface 32, and the first distance is smaller than the second distance.

[0078] It should be noted that the battery usually includes a plurality of battery cells 3, and the poles 31 of the plurality of battery cells 3 are connected together by a conductive part. The conductive part is usually connected to the top of the pole 31, that is, the side of the pole 31 away from the end face 32. The conductive part may also extend to the surrounding side of the pole 31. Therefore, the heat exchange part 11 needs to avoid the conductive part and the like.

[0079] In the embodiment of the present application, the first distance of the heat exchange part 11 is related to the position of the heat exchange part 11. When the heat exchange part 11 is arranged on the side of the pole 31, the first distance of the heat exchange part 11 is affected by the size of the pole 31 and the heat dissipation requirement. When the first distance of the heat exchange part 11 is large, the heat exchange part 11 may exceed the top of the pole 31, thereby interfering with the conductive part, etc.; when the first distance of the conductive part is small, the cross-sectional area of ​​the heat exchange part 11 is correspondingly small, and the ability to transfer heat is reduced accordingly, thereby affecting the heat dissipation.

[0080] In the embodiment of the present application, the first distance should be smaller than the second distance, so that the dimension of the heat exchange part 11 along the axial direction of the pole 31 does not exceed the dimension of the pole 31, thereby avoiding the conductive parts and the like. When the heat exchange part 11 is provided with a second surface 112, the first distance may be in the range of 3 mm to 10 mm, for example, the first distance may be 3 mm, 5 mm, 7 mm, 10 mm, etc. As an example, the first distance is 5 mm, and the second distance, i.e., the axial dimension of the pole 31, is set to be greater than 5 mm, so as to avoid the conductive parts and the like.

[0081] In the embodiment of the present application, the heat exchanger 1 can be a tubular structure, and a heat exchange medium flows in the heat exchanger 1. The wall thickness of the heat exchanger 1 will affect the heat dissipation efficiency and the structural strength of the heat exchanger 1. When the wall thickness of the heat exchanger 1 is large, the radial cross-sectional area of ​​the channel in the heat exchanger 1 is small, and the flow rate of the heat exchange medium is limited, thereby affecting the heat dissipation efficiency; when the wall thickness of the heat exchanger 1 is small, the structural strength of the heat exchanger 1 is reduced accordingly.

[0082] In the embodiment of the present application, the wall thickness of the heat exchanger 1 can be in the range of 1mm-2mm, for example, the wall thickness of the heat exchanger 1 is 1mm, 1.5mm, 2mm, etc. As an example, the wall thickness of the heat exchanger 1 is 1.5mm, so that the heat exchanger 1 can take into account both structural strength and heat dissipation effect.

[0083] In the heat dissipation structure of the embodiment of the present application, since the first distance is smaller than the second distance, there is a distance between the heat exchange part 11 and the end of the battery cell 3 so that the battery cell 3 can be connected with other components, thereby reducing the interference of the heat exchange part 11 with other components in the battery and facilitating the layout of the heat exchange part 1.

[0084] In order to facilitate heat transfer between the heat exchange element 1 and the plurality of poles 31 and simplify the structure, refer to Figure 6 and Figure 7 In some possible embodiments of the present application, the heat exchange element 1 includes a plurality of heat exchange portions 11 , and the plurality of heat exchange portions 11 are evenly distributed along an extension direction of the heat exchange element 1 .

[0085] In the embodiment of the present application, the heat exchange portion 11 in the heat exchanger 1 has a variety of possible distribution forms, for example, multiple heat exchange portions 11 are distributed along the circumference of the heat exchanger 1, or multiple heat exchange portions 11 are evenly distributed along the axial direction of the heat exchanger 1, and the embodiment of the present application is not limited to this.

[0086] In the embodiment of the present application, the extension direction of the heat exchanger 1 is the heat conduction direction in the heat exchanger 1. For example, when the heat exchanger 1 is a plate-like structure, the extension direction is the length direction of the heat exchanger 1; when the heat exchanger 1 is a tubular structure, the extension direction is the axial direction of the heat exchanger 1.

[0087] The heat dissipation structure of the embodiment of the present application has multiple heat exchange parts 11 arranged on the heat exchange element 1. The multiple heat exchange parts 11 can correspond to different poles 31, and can correspond to different poles 31 of the same battery cell 3, or poles 31 of different battery cells 3, so that one heat exchange element 1 can transfer heat with multiple poles 31, thereby simplifying the structure.

[0088] In order to adapt to the different layouts of the multiple battery cells 3 and to dissipate heat for the multiple battery cells 3, refer to Figure 7 In some possible embodiments of the present application, the heat exchange element 1 includes a first side 12 and a second side 13 arranged opposite to each other, a plurality of heat exchange parts 11 are arranged on the first side 12, or, a plurality of heat exchange parts 11 are arranged on the second side 13, or, the first side 12 and the second side 13 are alternately provided with heat exchange parts 11.

[0089] In the embodiment of the present application, multiple heat exchange parts 11 can be arranged on the same side or different sides of the heat exchange element 1. When the multiple heat exchange parts 11 are arranged on the same side of the heat exchange element 1, each heat exchange part 11 can correspond to a battery cell 3; when the multiple heat exchange parts 11 are alternately arranged along different sides of the heat exchange element 1, adjacent heat exchange parts 11 can correspond to different battery cells 3, and can also correspond to different parts of a battery cell 3, for example, respectively corresponding to the pole 31 of the battery cell 3 and the peripheral side of the battery cell 3.

[0090] In the embodiment of the present application, the radial cross-section of the heat exchanger 1 may be in various shapes, such as circular, square, triangular, rectangular, elliptical, etc. Fig.12 and Fig.13 In a possible embodiment of the present application, the radial cross-section of the heat exchanger 1 is square, and the heat exchanger 1 has two planes arranged opposite to each other, namely a first side 12 and a second side 13 of the heat exchanger 1.

[0091] In the heat dissipation structure of the embodiment of the present application, the heat exchange element 1 includes a first side 12 and a second side 13 arranged opposite to each other, and the heat exchange part 11 can be arranged on the first side 12 or the second side 13 to adapt to different layouts of the multiple battery cells 3, so as to facilitate heat exchange between one heat exchange element 1 and the multiple battery cells 3.

[0092] In order to facilitate the heat dissipation structure to dissipate heat for multiple battery cells 3, refer to Figure 8 In some possible embodiments of the present application, there are multiple heat exchange elements 1, and the multiple heat exchange elements 1 are arranged in sequence along the first direction. The heat exchange element 1 is provided with multiple heat exchange parts 11, and the multiple heat exchange parts 11 are arranged in sequence on the corresponding heat exchange element 1 along the second direction; wherein the first direction and the second direction are arranged at an angle.

[0093] It should be noted that the battery generally includes a plurality of cells 3 stacked and arranged in a matrix. Fig. 9 The multiple battery cells 3 form multiple battery cell columns, each battery cell column includes multiple battery cells 3 arranged linearly, the multiple battery cell columns are parallel to each other and arranged in sequence, and the battery cells 3 in adjacent battery cell columns can be arranged relative to each other or staggered.

[0094] In the embodiment of the present application, the heat exchange element 1 can be arranged along the arrangement direction of the multiple battery cells 3 in the battery cell column, that is, each heat exchange element 1 corresponds to a battery cell column, and the multiple heat exchange parts 11 on the heat exchange element 1 are arranged one by one with the multiple battery cells 3 in the corresponding battery cell column.

[0095] In the embodiment of the present application, the second direction may be an arrangement direction of the plurality of battery cells 3 in the battery cell column, and the angle between the first direction and the second direction may be an acute angle, an obtuse angle or a right angle. For example, the first direction and the second direction are arranged vertically or approximately vertically.

[0096] It should be noted that, since the multiple cells 3 in the battery are arranged in a matrix, the arrangement direction of the multiple cells 3 in the cell column can be parallel to the edge of the battery, or can be arranged at an angle to the edge of the battery, and the number of cells 3 in different cell columns can be the same or different. Correspondingly, the extension direction of the heat exchange element 1 can be arranged parallel to the edge of the battery, or can be arranged at an angle to the edge of the battery, as long as the multiple heat exchange elements 1 are arranged parallel to each other.

[0097] The heat dissipation structure of the embodiment of the present application includes a plurality of heat exchange elements 1, a plurality of heat exchange parts 11 on each heat exchange element 1 are arranged along a first direction, and a plurality of heat dissipation elements 22 are arranged along a second direction, so that the plurality of heat dissipation parts in the heat dissipation structure form a matrix structure so as to correspond to the arrangement structure of the plurality of battery cells 3.

[0098] In order to further improve the heat dissipation efficiency, refer to Fig.10 In some possible embodiments of the present application, the plurality of heat exchange elements 1 include a first heat exchange element 1a and a second heat exchange element 1b, and the first heat exchange element 1a and the second heat exchange element 1b are attached to opposite sides of the pole 31.

[0099] In the embodiment of the present application, the first heat exchanger 1a and the second heat exchanger 1b may adopt the same or different structures. For example, the first heat exchanger 1a and the second heat exchanger 1b both adopt tubular structures, and the first heat exchanger 1a and the second heat exchanger 1b may be connected to each other; or, the heat dissipation structure further includes a main pipeline, and the first heat exchanger 1a and the second heat exchanger 1b are respectively connected to the main pipeline.

[0100] In the embodiment of the present application, the opposite sides of the pole 31 refer to the two sides of the pole 31 that are opposite to each other, that is, the pole 31 is located between the first heat exchanger 1a and the second heat exchanger 1b, and the pole 31 can exchange heat with the first heat exchanger 1a and the second heat exchanger 1b respectively.

[0101] In the embodiment of the present application, when the heat dissipation structure adopts a tubular structure, the flow direction of the heat dissipation medium in adjacent heat exchangers 1 can be the same or different. For example, the flow direction of the heat dissipation medium in the first heat exchanger 1a and the second heat exchanger 1b is set in opposite directions, so that the temperature of the multiple battery cells 3 is more balanced.

[0102] The heat dissipation structure of the embodiment of the present application is provided with a first heat exchanger 1a and a second heat exchanger 1b. The two heat exchangers 1 correspond to different sides of the pole 31, respectively, which can improve the heat exchange efficiency between the pole 31 and the heat exchanger 1. Moreover, the heat is transferred from different heat exchangers 1 to the heat dissipation component 2, and the heat distribution is more dispersed, and the heat dissipation and cooling effect is also better.

[0103] In order to adapt to the arrangement structure of multiple battery cells 3, refer to Figure 7 and Fig.10In some possible embodiments of the present application, the first heat exchange element 1a extends along a straight line, and the second heat exchange element 1b includes a bent section 14 and a straight section 15, and the bent sections 14 and the straight sections 15 are alternately arranged.

[0104] In the embodiment of the present application, the first heat exchange element 1a extends in a straight line, and the multiple heat exchange parts 11 thereon are also arranged in a straight line, which is convenient for fitting with the multiple battery cells 3 in the row of battery cells 3, and the first heat exchange element 1a extending in a straight line has a relatively simple structure, and the flow resistance of the heat exchange medium therein is small, which is convenient for heat dissipation.

[0105] In the embodiment of the present application, the second heat exchanger 1b includes alternating straight sections 15 and bent sections 14, the straight sections 15 extend along a straight line, and the bent sections 14 can be bent at a right angle, an acute angle, or an obtuse angle. The alternating connection of the straight sections 15 and the bent sections 14 forms a wavy structure, wherein the bent sections 14 serve as the heat exchange part 11, so that the second heat exchanger 1b can be arranged between two adjacent rows of battery cells 3.

[0106] In the embodiment of the present application, the side of the bending section 14 facing the battery cell 3 can be set to a flat surface, an inner concave surface, etc., so as to fit the peripheral side of the pole 31. In order to reduce the flow resistance of the heat exchange medium, the bending section 14 can adopt an obtuse angle or a rounded transition.

[0107] The heat dissipation structure of the embodiment of the present application is provided with a first heat exchanger 1a extending along a straight line, and a second heat exchanger 1b with bent sections 14 and straight sections 15 alternately arranged. Through the cooperation of the first heat exchanger 1a and the second heat exchanger 1b, the heat dissipation structure can adapt to the arrangement structure of multiple battery cells 3.

[0108] In order to further improve the heat dissipation effect of the heat dissipation structure, refer to Fig.11 In some possible embodiments of the present application, the plurality of heat exchange elements 1 further include a third heat exchange element 1c, and the third heat exchange element 1c is attached to the peripheral side of the battery cell 3.

[0109] In the embodiment of the present application, the third heat exchange member 1c is arranged on the peripheral side of the battery cell 3. The third heat exchange member 1c can extend in a straight line or in a wave shape. For example, the third heat exchange member 1c extends in a wave shape, and its two opposite sides correspond to different rows of battery cells 3. Such an arrangement makes the arrangement between the battery cells 3 closer and the structure more compact.

[0110] In the embodiment of the present application, the third heat exchange element 1c can adopt the same or different heat exchange forms as the first heat exchange element 1a and the second heat exchange element 1b. When the third heat exchange element 1c, the first heat exchange element 1a and the second heat exchange element 1b all use heat exchange medium for heat exchange, the third heat exchange element 1c can be connected to the first heat exchange element 1a and / or the second heat exchange element 1b.

[0111] It should be noted that the heat dissipation structure of the present application can be provided with the first heat exchanger 1a, the second heat exchanger 1b and the third heat exchanger 1c at the same time; or, only the first heat exchanger 1a and the second heat exchanger 1b are provided, and the third heat exchanger 1c is not provided; or, only one of the first heat exchanger 1a and the second heat exchanger 1b is provided. It is understandable that when multiple heat exchangers 1 are provided, the battery cell 3 can transfer heat to the heat dissipation component 2 through multiple paths, and the heat dissipation area and the flow rate of the heat exchange medium are increased accordingly, thereby improving the heat dissipation effect.

[0112] The heat dissipation structure of the embodiment of the present application is provided with a third heat exchanger 1c, and the third heat exchanger 1c is attached to the peripheral side of the battery cell 3, so that the battery cell 3 can transfer heat to the corresponding heat exchanger 1 through the peripheral side, and can also transfer heat to the corresponding heat exchanger 1 through the pole 31. The contact part between the battery cell 3 and the heat dissipation structure is increased, and the efficiency of heat transfer is correspondingly improved, thereby improving the heat dissipation effect of the heat dissipation structure.

[0113] In order to reduce the influence of the heat exchanger 1 on the pole 31, refer to Fig.12 and Fig.13 In some possible embodiments of the present application, the heat exchange portion 11 includes an insulating layer 16 , and the insulating layer 16 is used to fit the corresponding pole 31 .

[0114] In an embodiment of the present application, the insulating layer 16 can be made of insulating materials such as rubber and plastic, and the heat exchange part 11 can only include the insulating layer 16. Alternatively, the heat exchange part 11 also includes a structural layer 17, and the structural layer 17 can be made of high-strength materials such as metal. The insulating layer 16 is arranged on the surface of the structural layer 17, and the insulating layer 16 can also be an insulating coating coated on the surface of the structural layer 17.

[0115] In the embodiment of the present application, only the heat exchange portion 11 may be provided with an insulating layer 16, or Fig.12 , only one side of the heat exchange portion 11 is provided with an insulating layer 16, or referring to Fig.13 , an insulating layer 16 is provided on the entire heat exchange element 1, which is not limited in the embodiment of the present application.

[0116] The heat dissipation structure of the embodiment of the present application can insulate the heat exchange portion 11 and the corresponding pole 31 by providing an insulating layer 16, so as to reduce the possibility of the pole 31 outputting electric energy to the heat exchange element 1 and reduce the influence of the heat exchange element 1 on the battery cell 3.

[0117] In order to facilitate the heat dissipation of the heat exchange element 1, refer to Fig.14 In some possible embodiments of the present application, the heat dissipation assembly 2 includes a pump body 21 and a heat sink 22 , a heat exchange medium flows in the heat exchange element 1 , and the pump body 21 is used to drive the heat exchange medium to flow between the heat exchange part 11 and the heat sink 22 .

[0118] In the embodiment of the present application, the heat exchange element 1 forms a loop, and the pump body 21 is arranged in the loop, thereby driving the heat exchange medium to flow in the loop, so that the heat exchange medium absorbs heat from the heat exchange part 11, reduces the temperature of the heat exchange part 11, and then brings the heat to the heat sink 22, and dissipates the heat to the outside by heat dissipation.

[0119] In an embodiment of the present application, the heat sink 22 may be a heat sink fin, a heat sink fan, etc. The heat sink fin is connected to a position on the heat exchanger 1 where the temperature is higher, and is used to absorb heat from the heat exchanger 1 to reduce the temperature of the heat exchanger 1. The heat sink fan generates airflow, and the airflow flows through the heat sink fins, thereby dissipating the heat on the heat sink fins to the outside.

[0120] In the heat dissipation structure of the embodiment of the present application, the heat dissipation component 2 is provided with a pump body 21 and a heat sink 22. The pump body 21 drives the heat exchange medium in the heat exchange element 1 to flow, so that the heat exchange medium quickly brings the heat to the heat sink 22, and the heat is transferred to the outside by heat dissipation, thereby realizing the heat dissipation of the heat exchange element 1 with high heat dissipation efficiency.

[0121] On this basis, the present application embodiment also provides a battery, referring to Fig. 9 The battery includes a shell 4, a heat dissipation structure and at least one battery cell 3. At least one battery cell 3 is stacked to form 3 battery cell groups, and the 3 battery cell groups are arranged in the shell 4; the heat exchange part 11 in the heat dissipation structure is arranged corresponding to the battery cell 3.

[0122] In an embodiment of the present application, a heat dissipation structure may be provided in the shell 4, and the multiple battery cells 3 in the shell 4 are arranged in series and / or in parallel through a bus component; alternatively, a plurality of battery modules are arranged in the shell 4, and the multiple battery cells 3 in the battery module are arranged in series and / or in parallel through a bus component, and the battery modules are also arranged in series and / or in parallel through a bus component, and each battery module is correspondingly provided with a heat dissipation structure.

[0123] In the embodiment of the present application, the battery cell 3 may be a secondary battery, which refers to a battery cell 3 that can be continuously used by activating the active material by charging after the battery cell 3 is discharged. The battery cell 3 may be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, etc., and the embodiment of the present application does not limit this.

[0124] In addition, the battery cell 3 can be a cylindrical battery cell 3, a prismatic battery cell 3, a soft-pack battery cell 3 or a battery cell 3 of other shapes. The prismatic battery cell 3 includes a square shell battery cell 3, a blade-shaped battery cell 3, and a polygonal battery. The polygonal battery is, for example, a hexagonal battery, etc. There is no special limitation in the present application.

[0125] The battery provided in the embodiment of the present application includes the heat dissipation structure of the embodiment of the present application. Part of the heat exchange portion 11 in the heat dissipation structure is arranged at the position of the pole 31 corresponding to the battery cell 3 and is in contact with the corresponding pole 31. It can efficiently transfer the heat of the pole 31 to the heat dissipation component 2, thereby dissipating heat and cooling the pole 31, so that the battery maintains stable working performance.

[0126] In addition, the present application also provides an electrical device, referring to Fig. 9 and Fig.15 The electrical device includes an electrical appliance 5 and a battery, and the battery is electrically connected to the electrical appliance 5.

[0127] In the embodiments of the present application, the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, 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, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0128] Reference Fig.15 In a possible embodiment of the present application, the electrical device is an electric vehicle, the electrical appliance 5 may be a drive motor, a control component, a vehicle air conditioner, a vehicle entertainment system, etc. in the electric vehicle, and the battery is arranged on the bottom side of the vehicle body.

[0129] The electrical equipment provided in the embodiment of the present application includes the battery of the embodiment of the present application. The heat dissipation structure in the battery can dissipate heat from the pole 31 of the battery cell 3, and can efficiently transfer the heat of the pole 31 to the heat dissipation component 2, thereby dissipating heat and cooling the pole 31, so that the battery can stably output electrical energy to the electrical appliance 5.

[0130] When the heat dissipation structure, battery and electrical equipment provided by the embodiments of the present application are in use, the heat exchange parts 11 on the first heat exchange element 1a and the second heat exchange element 1b are in contact with the poles 31 of the corresponding battery cells 3, and can absorb the heat of the corresponding poles 31 and / or the heat at the end faces 32 of the corresponding battery cells 3, and the heat exchange part 11 of the third heat exchange element 1c absorbs the heat at the peripheral side of the corresponding battery cells 3, thereby achieving heat dissipation of the battery cells 3, and the heat exchange part 11 transfers the heat to the heat exchange medium, and the heat is quickly transferred to the heat sink 22 through the flow of the heat exchange medium, and the heat sink 22 dissipates the heat to the outside.

[0131] Among them, the first heat exchanger 1a and the second heat exchanger 1b can take away the heat at the pole 31 and the end face 32 of the battery cell 3 in time, reducing the impact of the excessive temperature of the pole 31 and the end of the battery cell 3 on the working performance of the battery cell 3, and also reducing the damage or adverse effects of heat accumulation at the pole 31 on the battery. The heat exchanger 1 can also provide support for the battery cell 3, thereby improving the structural stability of the battery.

[0132] To further illustrate the effect of the heat dissipation structure of the embodiment of the present application, please refer to Table 1, which is a comparison table of battery temperature in different schemes and temperature differences between different battery cells 3. The test conditions are an ambient temperature of 25°C, charging with 1.5 times the rated current to 4.33 volts (V), and then discharging with 1 / 3 of the rated current to 3.13V.

[0133] Table 1

[0134] plan Battery maximum temperature / ℃ Temperature difference between different cells / ℃ Plan A 32 4 Plan B 30 3.2 Plan C 28 2.8 Plan D 27.5 2.5

[0135] Among them, in scheme A, only the third heat exchanger 1c is used to dissipate heat from the circumference of the battery cell 3; in scheme B, only the first heat exchanger 1a is provided, and the first heat exchanger 1a is attached to the circumference of the pole 31; in scheme C, only the first heat exchanger 1a is provided, and the first heat exchanger 1a is respectively attached to the circumference of the pole 31 and the end face 32 of the battery cell 3; in scheme D, the first heat exchanger 1a and the second heat exchanger 1b are provided to dissipate heat from the circumference of the pole 31 and the end face 32 of the battery cell 3.

[0136] According to Table 1, by arranging the heat exchange element 1 at the position of the pole 31 of the battery cell 3, the heat dissipation efficiency can be improved to reduce the temperature of the battery and the temperature difference between different battery cells 3, and as the number of heat exchange elements 1 and the contact position of the heat exchange element 1 and the battery cell 3 increases, the heat dissipation efficiency is further improved, and the battery temperature and the temperature difference between different battery cells 3 are further reduced.

[0137] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application is 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 dissipation structure for adjusting the temperature of a battery cell, characterized in that: The heat dissipation structure comprises: At least one heat exchange element, wherein the heat exchange element is provided with at least one heat exchange portion, and at least part of the heat exchange portion of the heat exchange element contacts the pole of the battery cell to exchange heat with the corresponding battery cell; The heat dissipation component is connected to the heat exchange component and is used to transfer the heat of the heat exchange component to the outside.

2. The heat dissipation structure according to claim 1, characterized in that: Part of the heat exchange portion includes a first surface, the first surface is used to contact the pole, and the first surface is in contact with the corresponding pole.

3. The heat dissipation structure according to claim 2, characterized in that: The first surface is attached to the circumferential side of the pole, and the contour of the first surface is at least partially matched to the circumferential contour of the pole.

4. The heat dissipation structure according to claim 3, characterized in that: The heat exchange portion is formed with a receiving groove, and the receiving groove is used to receive the corresponding pole, and the first surface is the inner surface of the receiving groove.

5. The heat dissipation structure according to any one of claims 1 to 4, characterized in that: Part of the heat exchange portion includes a second surface, and the second surface is used to fit the end surface of the corresponding battery core.

6. The heat dissipation structure according to claim 5, characterized in that: The end surface is provided with the pole, the side of the heat exchange portion away from the end surface has a first distance from the end surface, the side of the pole away from the end surface has a second distance from the end surface, and the first distance is smaller than the second distance.

7. The heat dissipation structure according to any one of claims 1 to 4, characterized in that: The heat exchange element includes a plurality of heat exchange parts, and the plurality of heat exchange parts are evenly distributed along an extension direction of the heat exchange element.

8. The heat dissipation structure according to claim 7, characterized in that: The heat exchange element includes a first side and a second side that are arranged opposite to each other, a plurality of the heat exchange parts are arranged on the first side, or a plurality of the heat exchange parts are arranged on the second side, or the first side and the second side are alternately provided with the heat exchange parts.

9. The heat dissipation structure according to any one of claims 1 to 4, characterized in that: There are multiple heat exchange elements, which are arranged in sequence along the first direction; multiple heat exchange parts are provided on the heat exchange element, and the multiple heat exchange parts are arranged in sequence on the corresponding heat exchange element along the second direction; Wherein, the first direction and the second direction are arranged at an angle.

10. The heat dissipation structure according to any one of claims 1 to 4, characterized in that: The plurality of heat exchange elements include a first heat exchange element and a second heat exchange element, and the first heat exchange element and the second heat exchange element are attached to opposite sides of the pole.

11. The heat dissipation structure according to claim 10, characterized in that: The first heat exchange member extends along a straight line, and the second heat exchange member includes a bent section and a straight section, and the bent section and the straight section are alternately arranged.

12. The heat dissipation structure according to any one of claims 1 to 4, characterized in that: The plurality of heat exchange components further include a third heat exchange component, and the third heat exchange component is attached to the peripheral side of the battery core.

13. The heat dissipation structure according to any one of claims 1 to 4, characterized in that: The heat exchange part includes an insulating layer, and the insulating layer is used to fit the corresponding pole.

14. The heat dissipation structure according to any one of claims 1 to 4, characterized in that: The heat dissipation assembly includes a pump body and a heat dissipation element. A heat exchange medium flows in the heat exchange element. The pump body is used to drive the heat exchange medium to flow between the heat exchange portion and the heat dissipation element.

15. A battery, characterized in that: include: case; At least one battery cell, stacked to form a battery cell group, wherein the battery cell group is disposed in the housing; The heat dissipation structure according to any one of claims 1 to 14, wherein the heat exchange portion in the heat dissipation structure is arranged corresponding to the battery core.

16. An electrical equipment, characterized in that: include: Electrical appliances; The battery according to claim 15, wherein the battery is electrically connected to the electrical appliance.

Images