Battery box, battery and electric device

Abstract

The utility model provides a battery box, a battery and an electric device, and belongs to the technical field of batteries. The battery box comprises a box body, a heat exchange assembly and a conductive part, the box body is provided with a containing cavity, and the conductive part and the heat exchange assembly are located in the containing cavity. And the conductive part is electrically connected with the box body and the heat exchange assembly, and the conductive part is configured to be used for disconnecting the electric connection between the box body and the heat exchange assembly under the condition that the current flowing through the conductive part exceeds a preset current value. When the insulation between the heat exchange assembly and the single battery is failed, the current flowing through the conductive part is increased, and the conductive part disconnects the electric connection between the box body and the heat exchange assembly, so that the influence on the stability of the battery is reduced, and the possibility of causing safety accidents is reduced.

Description

Technical Field

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

[0002] 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 in energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in their development.

[0003] The battery includes a battery box and battery cells and a heat exchange assembly located in the battery box. The heat exchange assembly is used to adjust the temperature of the battery cells. During normal use of the battery, the battery cells and the heat exchange assembly are insulated. If the insulation between the battery cells and the heat exchange assembly fails, the potential of the heat exchange assembly will increase, which will also affect the stability of the battery. In the related art, the battery box and the heat exchange assembly are connected by a conductive member, that is, the potential of the battery box is equal to the potential of the conductive member. The detection equipment can detect the potential of the heat exchange assembly by detecting the potential of the battery box, and it can be determined whether the insulation between the battery cell and the heat exchange assembly has failed without disassembling the battery box.

[0004] When the insulation between the battery cell and the heat exchange component fails, it may cause a safety accident. Utility Model Content

[0005] The present application aims to solve at least one of the technical problems in the background technology. To this end, one purpose of the present application is to provide a battery box, a battery and an electrical device to reduce the possibility of causing safety accidents.

[0006] An embodiment of the first aspect of the present application provides a battery box, comprising: a box body having a accommodating cavity; a heat exchange component located in the accommodating cavity; a conductive member located in the accommodating cavity, the conductive member electrically connecting the box body and the heat exchange component, and the conductive member is configured to disconnect the electrical connection between the box body and the heat exchange component when the current flowing through the conductive member exceeds a preset current value.

[0007] In the technical solution of the embodiment of the present application, when the insulation between the heat exchange assembly and the battery cell fails, the current flowing through the conductive part increases, and the conductive part disconnects the electrical connection between the box and the heat exchange assembly, thereby reducing the impact on the stability of the battery and reducing the possibility of causing a safety accident.

[0008] In some embodiments, the conductive member includes: a mounting housing having a first sliding groove extending in a first direction; two electrical connection parts, respectively located on opposite sides of the mounting housing in a second direction, the two electrical connection parts are respectively electrically connected to the box body and the heat exchange assembly, and the second direction intersects with the first direction; a conductive column extending in the first direction, the conductive column can be slidably located in the first sliding groove, and the conductive column electrically connects the two electrical connection parts; an electromagnetic control component connected to the mounting housing, the electromagnetic control component is electrically connected to the heat exchange component, and the electromagnetic control component is configured to control the conductive column to move in the first direction to disconnect the electrical connection between the two electrical connection parts when the current flowing through the electromagnetic control component exceeds a preset current value. When the insulation between the heat exchange assembly and the battery cell fails, the current flowing through the heat exchange assembly increases, so that the current flowing through the electromagnetic control component also increases, and the electromagnetic control component controls the conductive column to move in the first direction so that the conductive column is separated from the two electrical connection parts, thereby disconnecting the electrical connection between the two electrical connection parts. Reduce the impact of insulation failure on the stability of the battery and reduce the possibility of causing safety accidents.

[0009] In some embodiments, one of the two side walls of the mounting shell arranged along the third direction has a mounting hole, and the first direction, the second direction and the third direction intersect each other; the conductive member also includes: a first elastic member, located in the first sliding groove, one end of the first elastic member is connected to the mounting shell, the other end of the first elastic member is connected to the conductive column, and the middle part of the conductive column has a limit groove; the electromagnetic control component includes: a limit column, the middle part of the limit column is located in the mounting hole, and one end of the limit column is located in the limit groove; the control member is electrically connected to the heat exchange component, and the control member is configured to control the limit column to move toward a side away from the conductive column when the current flowing through the control member exceeds a preset current value. When the insulation between the heat exchange component and the battery cell fails, the current flowing through the heat exchange component increases, so that the current flowing through the control member also increases, and the control member controls the limit column to move toward a side away from the conductive column, and the limit column cannot limit the conductive column. The conductive column moves along the first direction under the action of the first elastic member, so that the conductive column is separated from the two electrical connection parts, thereby disconnecting the electrical connection between the two electrical connection parts.

[0010] In some embodiments, the limiting column has a first end and a second end arranged relatively along a third direction, and the middle part of the limiting column has a step, so that the orthographic projection of the second end on the first plane is located within the orthographic projection of the first end on the first plane and does not completely overlap, the first plane is perpendicular to the third direction, and the first end is located in the limiting groove; the control member includes: a mounting seat connected to the mounting shell, the mounting seat has a second sliding groove extending along the third direction, the second sliding groove is connected to the mounting hole, and the second end is located in the second sliding groove; a second elastic member is located in the mounting hole, and the opposite ends of the second elastic member along the third direction are respectively against the step and the mounting seat; a coil is surrounded by the mounting seat, and the two ends of the coil are electrically connected to the heat exchange component. When the insulation between the battery cell and the heat exchange component fails, the current flowing through the heat exchange component increases, the magnetic field generated by the coil increases, and the magnetic attraction of the magnetic field on the limiting column increases. The magnetic attraction is greater than the force provided by the second elastic member to the limiting column, so that the limiting column moves toward the side away from the conductive column under the action of the magnetic attraction, and the limiting of the conductive column is released, and the conductive column is separated from the two electrical connection parts, thereby disconnecting the electrical connection between the two electrical connection parts. It is more convenient to disconnect the circuit through electromagnetic induction control.

[0011] In some embodiments, the conductive member further comprises: a connecting rod, the opposite ends of the connecting rod are respectively connected to the two side walls of the mounting housing arranged along the third direction, the connecting rod is close to the bottom surface of the first sliding groove, and one end of the first elastic member is connected to the connecting rod. The connecting rod is provided to connect the battery box and the first elastic member through the connecting rod, so as to facilitate the installation of the first elastic member.

[0012] In some embodiments, the first elastic member includes a tension spring. The tension spring is elastic and can provide elastic force to the conductive column. The tension spring is easy to obtain and cheap, which reduces the manufacturing cost.

[0013] In some embodiments, the limiting groove surrounds the side wall of the conductive column. When installing the conductive member, the first end of the limiting column needs to be located in the limiting groove, so the opening of the limiting groove needs to correspond to the mounting hole so that the first end of the limiting column can extend from the mounting hole into the limiting groove. Since the limiting groove surrounds the side wall of the conductive column, the opening of the limiting groove also surrounds the side wall of the conductive column, which reduces the time for adjusting the position of the conductive column and makes installation more convenient.

[0014] In some embodiments, the mounting shell has a connection hole, the connection hole is connected to the first sliding groove, the connection hole passes through the opposite side walls of the mounting shell along the second direction, the electrical connection part includes a main body, the main body is located in the connection hole, and the conductive column is electrically connected to the main body. The connection hole is provided for placing the main body of the electrical connection part, and the conductive column is electrically connected to the main body to achieve electrical connection between the conductive column and the electrical connection part. Placing the main body of the electrical connection part in the connection hole can reduce the space occupied by the main body of the electrical connection part, which is conducive to the miniaturized design of the conductive part, reducing the space occupied by the conductive part in the accommodating cavity, and is conducive to improving the energy density of the battery.

[0015] In some embodiments, the electrical connection part further includes an extension part, the extension part is connected to the main body part, the main body part is located on a side of the extension part away from the bottom surface of the first sliding groove along the first direction, and the extension part is connected to the side wall of the mounting housing. The electrical connection part further includes an extension part, the extension part increases the volume of the electrical connection part, can increase the contact area between the electrical connection part and the box body or the battery cell, and reduce the possibility of failure of the electrical connection between the conductive part and the box body or the battery cell.

[0016] In some embodiments, the middle of the conductive column is electrically connected to the two electrical connection parts, the orthographic projection of one end of the conductive column away from the bottom surface of the first sliding groove on the second plane is located within the orthographic projection of the middle of the conductive column on the second plane and does not completely overlap, and the second plane is perpendicular to the first direction. When the insulation between the battery cell and the heat exchange component fails, the conductive column will move toward the bottom surface of the first sliding groove along the first direction. In the case where the distance moved by the conductive column is small, the end of the conductive column away from the bottom surface of the first sliding groove may be opposite to the two electrical connection parts. Since the size of the end of the conductive column away from the bottom surface of the first sliding groove is small, the conductive column cannot be connected to the two electrical connection parts, thereby disconnecting the electrical connection between the two electrical connection parts.

[0017] In some embodiments, the battery box includes multiple heat exchange components and multiple conductive members, and the multiple conductive members are electrically connected to the multiple heat exchange components one by one. Arranging multiple heat exchange components improves the heat exchange efficiency of the battery cells. At the same time, each heat exchange component is electrically connected to the box body through a conductive member, and it can be detected whether there is an insulation failure problem between each heat exchange component and the battery cell.

[0018] In some embodiments, the heat exchange assembly has a heat exchange channel, and the battery box further includes: a current collecting plate located in the accommodating cavity, the current collecting plate having a current collecting channel, and the heat exchange channel is connected to the current collecting channel. If the current collecting plate is installed, it is more convenient to uniformly transport the heat exchange medium to the heat exchange channel through the current collecting plate.

[0019] An embodiment of the second aspect of the present application provides a battery, which includes the battery box in the above embodiment; and a battery cell located in the accommodating cavity.

[0020] An embodiment of the third aspect of the present application provides an electrical device, which includes the battery in the above embodiment, and the battery is used to provide electrical energy.

[0021] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0023] Figure 1 A schematic diagram of the structure of a battery box and a battery cell provided in an embodiment of the present application;

[0024] Figure 2 A top view of a battery box and a battery cell provided in an embodiment of the present application;

[0025] Figure 3 for Figure 2 Cross-section view of the AA surface.

[0026] Figure 4 A schematic diagram of the structure of a conductive member provided in an embodiment of the present application;

[0027] Figure 5 An exploded schematic diagram of a conductive member provided in an embodiment of the present application;

[0028] Figure 6 A front view of a conductive member provided in an embodiment of the present application;

[0029] Figure 7 for Figure 6 Schematic diagram of the cross section of the middle BB surface;

[0030] Figure 8 for Figure 6 Schematic diagram of the cross section of the CC plane.

[0031] Description of reference numerals:

[0032] 100. Battery cell; 10. Box; 11. Accommodating cavity; 20. Heat exchange component; 30. Conductive member; 31. Mounting shell; 311. First sliding groove; 312. Mounting hole; 313. Connecting hole; 32. Electrical connecting portion; 321. Main body; 322. Extending portion; 33. Conductive column; 331. Limiting groove; 34. Electromagnetic control component; 341. Limiting column; 3411. First end; 3412. Second end; 3413. Step; 342. Control member; 3421. Mounting seat; 3422. Second sliding groove; 3423. Second elastic member; 3424. Coil; 35. First elastic member; 36. Connecting rod; 40. Current collecting plate. DETAILED DESCRIPTION

[0033] 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.

[0034] 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.

[0035] In the description of the embodiments of the present application, the technical terms "first", "second", 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.

[0036] 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.

[0037] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. 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.

[0038] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0039] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which 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.

[0040] 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.

[0041] 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.

[0042] The battery includes a battery box and battery cells and a heat exchange assembly located in the battery box. During normal use of the battery, the battery cells and the heat exchange assembly are insulated, but because the heat exchange assembly includes metal and is in an electric field, the heat exchange assembly will have an electric potential, but this potential is low and generally does not affect the normal operation of the battery. If the insulation between the battery cell and the heat exchange assembly fails, the potential of the heat exchange assembly will increase. In the related art, the battery box and the heat exchange assembly are connected by a conductive member, and the potential of the heat exchange assembly can be detected by detecting the potential of the battery box. However, if the electrical connection between the battery cell and the heat exchange assembly is not disconnected in time, it will affect the stability of the battery and may cause safety accidents.

[0043] An embodiment of the present application provides a battery box, which includes a box body, a heat exchange assembly and a conductive member, wherein the box body has a receiving cavity, and the conductive member and the heat exchange assembly are located in the receiving cavity. The conductive member electrically connects the box body and the heat exchange assembly, and the conductive member is configured to disconnect the electrical connection between the box body and the heat exchange assembly when the current flowing through the conductive member exceeds a preset current value. When the insulation between the heat exchange assembly and the battery cell fails, the current flowing through the conductive member increases, and the conductive member disconnects the electrical connection between the box body and the heat exchange assembly, thereby reducing the impact on the stability of the battery and reducing the possibility of causing a safety accident.

[0044] The battery box and battery disclosed in the embodiments of the present application can be used in, but not limited to, electrical devices such as vehicles, ships, or aircraft.

[0045] The present application embodiment provides a battery box, Figure 1 A schematic diagram of the structure of a battery box and a battery cell provided in an embodiment of the present application. Figure 1 The battery box includes a box body 10 and a heat exchange assembly 20 . The box body 10 has a receiving cavity 11 . The battery cell 100 and the heat exchange assembly 20 are located in the receiving cavity 11 .

[0046] Figure 2 A top view of a battery box and a battery cell provided in an embodiment of the present application. Figure 3 for Figure 2 Cross-section view of the AA plane. Figure 2 and Figure 3 The battery box also includes a conductive member 30, which is located in the accommodating cavity 11. The conductive member 30 electrically connects the box body 10 and the heat exchange component 20. The conductive member 30 is configured to disconnect the electrical connection between the box body 10 and the heat exchange component 20 when the current flowing through the conductive member 30 exceeds a preset current value.

[0047] In the embodiments of the present application, the box 10 is used to provide a storage space for the battery cell 100, and the box 10 can adopt a variety of structures. In some embodiments, the box 10 may include a first part and a second part, the first part and the second part cover each other, and the first part and the second part jointly define a storage space for accommodating the battery cell 100. The second part may be a hollow structure with an opening at one end, and the first part may be a plate-like structure, and the first part covers the open side of the second part, so that the first part and the second part jointly define a storage space; the first part and the second part may also be hollow structures with an opening on one side, and the open side of the first part covers the open side of the second part. Of course, the box 10 formed by the first part and the second part can be in a variety of shapes, such as a cylinder, a cuboid, etc.

[0048] exist Figure 1 and Figure 2In the embodiment, the battery cell 100 is in the shape of a cuboid, and a plurality of battery cells 100 are arranged in an array in the receiving cavity 11. In other implementations, the battery cell 100 may also be in other shapes, and the battery cell 100 may also be arranged in other ways, which is not limited in the embodiments of the present application.

[0049] In the embodiment of the present application, the heat exchange assembly 20 is in contact with the battery cell 100 to achieve heat exchange between the heat exchange assembly 20 and the battery cell 100. For example, Figure 1 and Figure 2 As shown, when the battery cell 100 is in the shape of a rectangular parallelepiped, the heat exchange assembly 20 can be in contact with the surface of the battery cell 100 with the largest area to increase the contact area between the heat exchange assembly 20 and the battery cell 100, thereby improving the heat exchange efficiency, wherein the surface of the battery cell 100 with the largest area can be called the large surface of the battery cell 100.

[0050] In some embodiments of the present application, the heat exchange assembly 20 may include multiple heat exchange plates, which are located between adjacent battery cells 100, so that the shape of the module composed of the battery cells 100 and the heat exchange assembly 20 can be similar to a rectangular parallelepiped. The module composed of the battery cells 100 and the heat exchange assembly 20 is placed in the rectangular parallelepiped accommodating cavity 11, which can improve the utilization rate of the accommodating cavity 11 and improve the energy density of the battery.

[0051] In the embodiment of the present application, the heat exchange assembly 20 has a heat exchange channel. If the temperature of the battery cell 100 is high, a heat exchange medium with a lower temperature can be transported into the heat exchange channel. The heat exchange medium exchanges heat with the battery cell 100 through the heat exchange assembly 20 to reduce the temperature of the battery cell 100. If the temperature of the battery cell 100 is low, a heat exchange medium with a higher temperature can be transported into the heat exchange channel. The heat exchange medium exchanges heat with the battery cell 100 through the heat exchange assembly 20 to increase the temperature of the battery cell 100. The heat exchange assembly 20 can make the battery cell 100 work at a suitable temperature, thereby improving the stability of the battery.

[0052] In some embodiments of the present application, in order to improve the heat transfer efficiency of the heat exchange assembly 20, the material of the portion of the heat exchange assembly 20 that contacts the battery cell 100 may be metal. In other embodiments of the present application, the heat exchange assembly 20 may also be made of other materials.

[0053] The battery cell 100 will generate an electric field, and the heat exchange assembly 20 is located in the electric field. The heat exchange assembly 20 will have an electric potential, but the electric potential is small and generally will not have a significant impact on the battery cell 100. If the insulation of the battery cell 100 and the heat exchange assembly 20 fails at at least one position, the heat exchange assembly 20 is electrically connected to the battery cell 100, which will increase the electric potential of the heat exchange assembly 20. The increase in the electric potential of the heat exchange assembly 20 will affect the stability of the battery, but because the heat exchange assembly 20 is located in the accommodating cavity 11, the staff cannot understand the electric potential of the heat exchange assembly 20 in real time, and cannot judge whether the insulation between the battery cell 100 and the heat exchange assembly 20 has failed. The conductive member 30 electrically connects the housing 10 and the heat exchange assembly 20, so that the electric potentials of the housing 10 and the heat exchange assembly 20 are equal. The staff can understand the electric potential of the heat exchange assembly 20 by measuring the electric potential of the housing 10, and thus judge whether the insulation between the battery cell 100 and the heat exchange assembly 20 has failed.

[0054] In an embodiment of the present application, the conductive member 30 electrically connects the housing 10 and the heat exchange assembly 20, that is, the potential of the conductive member 30 is equal to the potential of the heat exchange assembly 20. When the heat exchange assembly 20 is electrically connected to the battery cell 100, the current flowing through the conductive member 30 will increase.

[0055] Exemplarily, for example, the current value flowing through the conductive member 30 when the heat exchange assembly 20 is electrically connected to the battery cell 100 can be determined experimentally, and the current value can be set as a preset current value, or a current value slightly smaller than the current can be set as the preset current value.

[0056] In some embodiments of the present application, when the current flowing through the conductive member 30 exceeds a preset current value, the conductive member 30 disconnects the electrical connection between the housing 10 and the heat exchange assembly 20. This can be achieved in a variety of ways. For example, the conductive member 30 includes an electrically controlled switch. When the current flowing through the conductive member 30 exceeds a preset current value, the electrically controlled switch is automatically closed; or the conductive member 30 includes a fuse. When the current flowing through the conductive member 30 exceeds a preset current value, the fuse blows.

[0057] In an embodiment of the present application, when the insulation between the heat exchange assembly 20 and the battery cell 100 fails, the current flowing through the conductive member 30 increases, and the conductive member 30 disconnects the electrical connection between the box body 10 and the heat exchange assembly 20, thereby reducing the impact on the stability of the battery and reducing the possibility of causing a safety accident.

[0058] In the related art, if the insulation between at least two battery cells 100 and the heat exchange assembly 20 fails, a loop will be formed between the two battery cells 100 through the heat exchange assembly 20, the conductive member 30 and the housing 10, which may easily cause the battery cells 100 to catch fire and trigger a safety accident.

[0059] When the battery box provided in the embodiment of the present application is used for a battery, when the insulation between the heat exchange assembly 20 and the battery cell 100 fails, the conductive member 30 can promptly disconnect the electrical connection between the box body 10 and the heat exchange assembly 20, thereby reducing the risk of fire in the battery cell 100 and the possibility of safety accidents.

[0060] According to some embodiments of the present application, Figure 4 A schematic diagram of the structure of a conductive member provided in an embodiment of the present application. Figure 5 An exploded schematic diagram of a conductive member provided in an embodiment of the present application. Figures 3 to 5 The conductive member 30 includes a mounting shell 31, two electrical connection parts 32, a conductive column 33 and an electromagnetic control assembly 34. The mounting shell 31 has a first sliding groove 311 extending along a first direction X, and the two electrical connection parts 32 are respectively located on opposite sides of the mounting shell 31 along a second direction Y. The two electrical connection parts 32 are respectively electrically connected to the box body 10 and the heat exchange assembly 20, and the second direction Y intersects with the first direction X. The conductive column 33 extends along the first direction X, and the conductive column 33 is slidably located in the first sliding groove 311. The conductive column 33 is electrically connected to the two electrical connection parts 32. The electromagnetic control assembly 34 is connected to the mounting shell 31, and the electromagnetic control assembly 34 is electrically connected to the heat exchange assembly 20. The electromagnetic control assembly 34 is configured to control the conductive column 33 to move along the first direction X to disconnect the electrical connection between the two electrical connection parts 32 when the current flowing through the electromagnetic control assembly 34 exceeds a preset current value.

[0061] In the embodiment of the present application, the mounting shell 31 is used to provide a housing space for other components. The mounting shell 31 can adopt a variety of structures, which are not limited by the embodiment of the present application.

[0062] In the embodiment of the present application, the first sliding groove 311 may have an opening, or the first sliding groove 311 may not have an opening, that is, the first sliding groove 311 is a closed space.

[0063] In the embodiment of the present application, the first sliding groove 311 may be a rectangular groove or a cylindrical groove.

[0064] In an embodiment of the present application, the two electrical connection parts 32 are electrically connected to the box body 10 and the heat exchange assembly 20 respectively, and the conductive column 33 electrically connects the two electrical connection parts 32, that is, the box body 10 and the heat exchange assembly 20 are electrically connected through the two electrical connection parts 32 and the conductive column 33.

[0065] In the embodiment of the present application, the mounting housing 31 is insulated, and the two electrical connection portions 32 are respectively located at two opposite sides of the mounting housing 31 , that is, the two electrical connection portions 32 can only be electrically connected through the conductive pillars 33 .

[0066] Exemplarily, the material of the mounting shell 31 may be plastic, or metal coated with rubber, to ensure the insulation of the mounting shell 31 .

[0067] In some embodiments of the present application, the material of the electrical connection portion 32 may be metal, such as copper, aluminum or iron.

[0068] In the embodiment of the present application, the electromagnetic control component 34 is electrically connected to the heat exchange component 20 , and the current flowing through the heat exchange component 20 is equal to the current flowing through the electromagnetic control component 34 .

[0069] In the embodiment of the present application, when the insulation between the heat exchange assembly 20 and the battery cell 100 fails, the current flowing through the heat exchange assembly 20 increases, so that the current flowing through the electromagnetic control assembly 34 also increases, and the electromagnetic control assembly 34 controls the conductive column 33 to move along the first direction X, so that the conductive column 33 is separated from the two electrical connection parts 32, thereby disconnecting the electrical connection between the two electrical connection parts 32. The influence of insulation failure on the stability of the battery is reduced, and the possibility of causing safety accidents is reduced.

[0070] According to some embodiments of the present application, Figure 6 This is a front view of a conductive member provided in an embodiment of the present application. Figure 7 for Figure 6 Schematic diagram of the cross section of the BB plane. Figures 5 to 7 , one of the two side walls of the mounting shell 31 arranged along the third direction Z has a mounting hole 312, and the first direction X, the second direction Y and the third direction Z intersect each other. The conductive member 30 also includes a first elastic member 35, the first elastic member 35 is located in the first sliding groove 311, one end of the first elastic member 35 is connected to the mounting shell 31, and the other end of the first elastic member 35 is connected to the conductive column 33, and the middle part of the conductive column 33 has a limiting groove 331. The electromagnetic control component 34 includes a limiting column 341 and a control member 342, the middle part of the limiting column 341 is located in the mounting hole 312, one end of the limiting column 341 is located in the limiting groove 331, and the control member 342 is electrically connected to the heat exchange component 20, and the control member 342 is configured to control the limiting column 341 to move toward a side away from the conductive column 33 when the current flowing through the control member 342 exceeds a preset current value.

[0071] In the embodiment of the present application, the opposite ends of the first elastic member 35 are respectively connected to the mounting shell 31 and the conductive column 33, and the first elastic member 35 can provide a force to the conductive column 33 toward the bottom wall of the first sliding groove 311; or the first elastic member 35 can provide a force to the conductive column 33 away from the bottom wall of the first sliding groove 311.

[0072] Exemplarily, the first elastic member 35 provides a force to the conductive column 33 toward the bottom wall of the first sliding groove 311, and the first elastic member 35 can be in a stretched state; the first elastic member 35 provides a force to the conductive column 33 away from the bottom wall of the first sliding groove 311, and the first elastic member 35 can be in a compressed state.

[0073] In the embodiment of the present application, the first direction X, the second direction Y and the third direction Z intersect each other in pairs, and the first direction X, the second direction Y and the third direction Z may be perpendicular to each other in pairs; or the first direction X, the second direction Y and the third direction Z may intersect each other in pairs but are not perpendicular.

[0074] In the embodiment of the present application, the mounting hole 312 is used to mount the limiting column 341. When there is no insulation failure between the battery cell 100 and the heat exchange assembly 20, one end of the limiting column 341 is located in the limiting groove 331, and the limiting column 341 limits the conductive column 33. Even if the first elastic member 35 provides force to the conductive column 33, the conductive column 33 cannot move, thereby ensuring the electrical connection between the box body 10 and the heat exchange assembly 20.

[0075] In the embodiment of the present application, the control component 342 is electrically connected to the heat exchange component 20 , and the current flowing through the heat exchange component 20 is equal to the current flowing through the control component 342 .

[0076] In an embodiment of the present application, when the insulation between the heat exchange assembly 20 and the battery cell 100 fails, the current flowing through the heat exchange assembly 20 increases, so that the current flowing through the control component 342 also increases. The control component 342 controls the limit column 341 to move toward the side away from the conductive column 33. The limit column 341 cannot limit the conductive column 33. The conductive column 33 moves along the first direction X under the action of the first elastic component 35, so that the conductive column 33 is separated from the two electrical connection parts 32, thereby disconnecting the electrical connection between the two electrical connection parts 32.

[0077] In an embodiment of the present application, when the first elastic member 35 provides a force toward the bottom wall of the first sliding groove 311 to the conductive column 33, the conductive column 33 moves along the first direction X toward the bottom wall of the first sliding groove 311; when the first elastic member 35 provides a force away from the bottom wall of the first sliding groove 311 to the conductive column 33, the conductive column 33 moves along the first direction X to the side away from the bottom wall of the first sliding groove 311.

[0078] According to some embodiments of the present application, Figure 8 for Figure 6 Schematic diagram of the cross section of the CC plane. Figure 7 and Figure 8The limiting column 341 has a first end 3411 and a second end 3412 arranged relatively along the third direction Z, and a step 3413 is provided in the middle of the limiting column 341, so that the orthographic projection of the second end 3412 on the first plane is located within the orthographic projection of the first end 3411 on the first plane and does not completely overlap, the first plane is perpendicular to the third direction Z, and the first end 3411 is located in the limiting groove 331. The control member 342 includes a mounting seat 3421, a second elastic member 3423 and a coil 3424. The mounting seat 3421 is connected to the mounting housing 31, and the mounting seat 3421 has a second sliding groove 3422 extending along the third direction Z, the second sliding groove 3422 is connected to the mounting hole 312, and the second end 3412 is located in the second sliding groove 3422. The second elastic member 3423 is located in the mounting hole 312 , and opposite ends of the second elastic member 3423 along the third direction Z respectively abut against the step 3413 and the mounting seat 3421 . The coil 3424 surrounds the mounting seat 3421 , and both ends of the coil 3424 are electrically connected to the heat exchange assembly 20 .

[0079] In the embodiment of the present application, the cross-section of the limiting column 341 may be circular, rectangular, or other shapes, wherein the cross-section is perpendicular to the third direction Z.

[0080] In some embodiments of the present application, the limiting column 341 may include two cylinders, the bottom surfaces of the two cylinders are connected to each other, the bottom diameters of the two cylinders are not equal, the cylinder with the larger bottom diameter is located on the side close to the limiting groove 331, and the cylinder with the smaller bottom diameter is located on the side close to the second sliding groove 3422.

[0081] In the embodiment of the present application, the mounting seat 3421 is used to mount the second elastic member 3423 and the coil 3424 , and the mounting seat 3421 and the mounting shell 31 can be bonded or welded or connected by bolts.

[0082] In an embodiment of the present application, the coil 3424 is electrically connected to the heat exchange component 20, and the current flowing through the heat exchange component 20 is equal to the current flowing through the coil 3424. When current flows through the coil 3424, the coil 3424 will generate a magnetic field, and the magnetic field has a magnetic force on the limit column 341.

[0083] In the embodiment of the present application, the limiting post 341 is ferromagnetic and can be attracted by magnetic force.

[0084] Exemplarily, the material of the limiting column 341 may include at least one of iron, cobalt, and nickel.

[0085] In the embodiment of the present application, when there is no insulation failure between the battery cell 100 and the heat exchange assembly 20, the current flowing through the heat exchange assembly 20 is small, the magnetic field generated by the coil 3424 is small, and the magnetic attraction force of the magnetic field on the limiting column 341 is small. Since the two opposite ends of the second elastic member 3423 along the third direction Z are respectively against the step 3413 and the mounting seat 3421, the second elastic member 3423 provides a force toward the conductive column 33 to the limiting column 341, so that the first end 3411 of the limiting column 341 is located in the limiting groove 331, thereby limiting the conductive column 33 from moving along the first direction X.

[0086] In the embodiment of the present application, the magnetic force exerted on the limiting column 341 by the magnetic field generated by the coil 3424 is in opposite directions to the force exerted on the limiting column 341 by the second elastic member 3423 .

[0087] In the embodiment of the present application, when the insulation between the battery cell 100 and the heat exchange assembly 20 fails, the current flowing through the heat exchange assembly 20 increases, the magnetic field generated by the coil 3424 increases, and the magnetic attraction of the magnetic field on the limit column 341 increases. The magnetic attraction is greater than the force provided by the second elastic member 3423 to the limit column 341, so that the limit column 341 moves toward the side away from the conductive column 33 under the action of the magnetic attraction, and the limit on the conductive column 33 is released. The conductive column 33 is separated from the two electrical connection parts 32, thereby disconnecting the electrical connection between the two electrical connection parts 32. It is more convenient to disconnect through the electromagnetic induction control loop.

[0088] In the embodiment of the present application, it is more convenient to control the movement of the limiting column 341 through the magnetic attraction force of the magnetic field generated by the coil 3424.

[0089] In the embodiment of the present application, the second elastic member 3423 may be a spring. In a normal state, the spring is in a compressed state to provide a force to the limiting column 341 toward the conductive column 33 .

[0090] In an embodiment of the present application, a spring can be selected through experiments so that when the insulation between the battery cell 100 and the heat exchange assembly 20 fails, the magnetic attraction force of the magnetic field generated by the coil 3424 is greater than the force provided by the second elastic member 3423 to the limiting column 341, so as to ensure that the limiting column 341 can move under the action of the magnetic attraction force.

[0091] According to some embodiments of the present application, see Figure 4 and Figure 7 The conductive member 30 also includes a connecting rod 36, the opposite ends of which are respectively connected to the two side walls of the mounting shell 31 arranged along the third direction Z. The connecting rod 36 is close to the bottom surface of the first sliding groove 311, and one end of the first elastic member 35 is connected to the connecting rod 36.

[0092] In some embodiments of the present application, one end of the connecting rod 36 has a limiting protrusion, and the other end of the connecting rod 36 has a thread. When installing the connecting rod 36, the other end of the connecting rod 36 is sequentially passed through the two side walls of the mounting shell 31 arranged along the third direction Z, and then the nut is screwed on the other end of the connecting rod 36 to connect the connecting rod 36 to the mounting shell 31.

[0093] In some other embodiments of the present application, opposite ends of the connecting rod 36 may be bonded to two side walls of the mounting housing 31 .

[0094] In the embodiment of the present application, the middle portion of the connecting rod 36 is located in the accommodating cavity 11 , so that one end of the first elastic member 35 can be connected to the connecting rod 36 .

[0095] In the embodiment of the present application, a connecting rod 36 is provided, and the battery box and the first elastic member 35 are connected by the connecting rod 36, so as to facilitate the installation of the first elastic member 35.

[0096] According to some embodiments of the present application, the first elastic member 35 includes a tension spring.

[0097] In an embodiment of the present application, the tension spring has hooks at both ends, the end surface of the conductive column 33 facing the first elastic member 35 has a hook, the hook at one end of the tension spring is hung on the middle of the connecting rod 36, and the hook at the other end of the tension spring is connected to the hook on the conductive column 33.

[0098] The tension spring is elastic and can provide elastic force to the conductive column 33 , and the tension spring is easy to obtain and cheap, thereby reducing the manufacturing cost.

[0099] According to some embodiments of the present application, the limiting groove 331 surrounds the side wall of the conductive pillar 33 .

[0100] Exemplarily, the limiting groove 331 is a circular groove.

[0101] In the embodiment of the present application, when installing the conductive member 30, the first end 3411 of the limiting column 341 needs to be located in the limiting groove 331, so the opening of the limiting groove 331 needs to correspond to the mounting hole 312, so that the first end 3411 of the limiting column 341 can extend from the mounting hole 312 into the limiting groove 331. Since the limiting groove 331 surrounds the side wall of the conductive column 33, the opening of the limiting groove 331 also surrounds the side wall of the conductive column 33, which reduces the time for adjusting the position of the conductive column 33 and makes installation more convenient.

[0102] According to some embodiments of the present application, see Figure 5The mounting housing 31 has a connection hole 313, which is connected to the first sliding groove 311. The connection hole 313 penetrates the two opposite side walls of the mounting housing 31 along the second direction Y. The electrical connection portion 32 includes a main body 321, which is located in the connection hole 313, and the conductive column 33 is electrically connected to the main body 321.

[0103] In an embodiment of the present application, when the connection hole 313 penetrates the opposite side walls of the mounting shell 31 along the second direction Y, the opposite side walls of the mounting shell 31 along the second direction Y have openings, which are used to place the main body 321. Since the connection hole 313 is connected to the first sliding groove 311, the conductive column 33 located in the first sliding groove 311 can be electrically connected to the main body 321.

[0104] In some embodiments of the present application, the connecting hole 313 may be a square hole, and a side of the square hole away from the bottom wall of the first sliding groove 311 coincides with the opening of the first sliding groove 311 .

[0105] In other implementations, the connection hole 313 may be a circular hole.

[0106] In the embodiment of the present application, the connection hole 313 is provided for placing the main body 321 of the electrical connection part 32, and the conductive column 33 is electrically connected to the main body 321, so as to realize the electrical connection between the conductive column 33 and the electrical connection part 32. Placing the main body 321 of the electrical connection part 32 in the connection hole 313 can reduce the space occupied by the main body 321 of the electrical connection part 32, which is conducive to the miniaturization design of the conductive member 30, reducing the space occupied by the conductive member 30 in the accommodating cavity 11, and is conducive to improving the energy density of the battery.

[0107] According to some embodiments of the present application, see Figure 5 The electrical connection portion 32 also includes an extension portion 322, which is connected to the main body portion 321. The main body portion 321 is located on a side of the extension portion 322 away from the bottom surface of the first sliding groove 311 along the first direction X, and the extension portion 322 is connected to the side wall of the mounting shell 31.

[0108] In the embodiment of the present application, the extension portion 322 and the main body portion 321 are both plate-like structures, and along the third direction Z, the width of the extension portion 322 , the width of the main body portion 321 and the width of the mounting shell 31 are all equal.

[0109] In the embodiment of the present application, along the second direction Y, the sum of the thickness of the side wall of the mounting housing 31 and the thickness of the extension portion 322 is equal to the thickness of the main body 321 .

[0110] In the embodiment of the present application, along the first direction X, the length of the electrical connection portion 32 is equal to the length of the mounting housing 31 .

[0111] In an embodiment of the present application, the main body 321 is located in the connecting hole 313, and the main body 321 can be directly electrically connected to the conductive column 33. The extension portion 322 and the conductive column 33 are separated by the side wall of the mounting shell 31. The extension portion 322 and the conductive column 33 cannot be directly electrically connected, and the electrical connection between the extension portion 322 and the conductive column 33 can only be achieved through the main body 321.

[0112] In an embodiment of the present application, the electrical connection portion 32 also includes an extension portion 322, which increases the volume of the electrical connection portion 32, can increase the contact area between the electrical connection portion 32 and the box body 10 or the battery cell 100, and reduce the possibility of failure of the electrical connection between the conductive member 30 and the box body 10 or the battery cell 100.

[0113] In the embodiment of the present application, the electrical connection portion 32 and the mounting housing 31 may be connected by bonding.

[0114] In some other embodiments of the present application, the electrical connection portion 32 and the mounting housing 31 may be connected by bolts.

[0115] According to some embodiments of the present application, Figures 4 to 7 The middle part of the conductive column 33 is electrically connected to the two electrical connection parts 32, and the orthographic projection of one end of the conductive column 33 away from the bottom surface of the first sliding groove 311 on the second plane is located within the orthographic projection of the middle part of the conductive column 33 on the second plane and does not completely overlap, and the second plane is perpendicular to the first direction X.

[0116] In an embodiment of the present application, the orthographic projection of one end of the conductive pillar 33 away from the bottom surface of the first sliding groove 311 on the second plane is located within the orthographic projection of the middle part of the conductive pillar 33 on the second plane and does not completely overlap, which can be characterized as: the size of the end of the conductive pillar 33 away from the bottom surface of the first sliding groove 311 is smaller than the size of the middle part of the conductive pillar 33.

[0117] In some embodiments of the present application, the middle portion of the conductive pillar 33 is a cylinder, and the conductive pillar 33 near the end is a truncated cone. The middle portion of the conductive pillar 33 is a cuboid, and the conductive pillar 33 near the end is a prism.

[0118] In other embodiments of the present application, the middle portion of the conductive pillar 33 is a cylinder, and the conductive pillar 33 near the end is a cone. The middle portion of the conductive pillar 33 is a cuboid, and the conductive pillar 33 near the end is a pyramid.

[0119] Combination Figure 7 and Figure 8The first sliding slot 311 is in the shape of a cuboid, the opening of the first sliding slot 311 is in the shape of a square, and the middle of the conductive pillar 33 is in the shape of a cylinder. The side length of the square is equal to the diameter of the middle of the conductive pillar 33, so that the conductive pillar 33 can be arranged along the first direction X in the first sliding slot 311.

[0120] In an embodiment of the present application, when the insulation between the battery cell 100 and the heat exchange assembly 20 fails, the conductive column 33 will move along the first direction X toward the bottom surface of the first sliding groove 311. When the distance moved by the conductive column 33 is small, the end of the conductive column 33 away from the bottom surface of the first sliding groove 311 may be opposite to the two electrical connection parts 32. Since the size of the end of the conductive column 33 away from the bottom surface of the first sliding groove 311 is small, the conductive column 33 cannot be connected to the two electrical connection parts 32, thereby disconnecting the electrical connection between the two electrical connection parts 32.

[0121] According to some embodiments of the present application, the battery box includes a plurality of heat exchange components 20 and a plurality of conductive members 30 , and the plurality of conductive members 30 are electrically connected to the plurality of heat exchange components 20 in a one-to-one correspondence.

[0122] In an embodiment of the present application, multiple conductive members 30 are electrically connected to multiple heat exchange components 20 in a one-to-one correspondence, which can be characterized as: one conductive member 30 electrically connects one heat exchange component 20 and the housing 10 , and one heat exchange component 20 is electrically connected to the housing 10 through one conductive member 30 .

[0123] In the embodiment of the present application, multiple heat exchange components 20 are provided to improve the heat exchange efficiency of the battery cell 100. At the same time, each heat exchange component 20 is electrically connected to the box 10 through a conductive member 30, and it can be detected whether there is an insulation failure problem between each heat exchange component 20 and the battery cell 100.

[0124] According to some embodiments of the present application, the heat exchange component 20 has a heat exchange channel. Figure 1 and Figure 2 The battery box further includes a current collecting plate 40, which is located in the accommodating cavity 11. The current collecting plate 40 has a current collecting channel, and the heat exchange channel is connected to the current collecting channel.

[0125] In the embodiment of the present application, both the heat exchange channel and the collecting channel are used to transport a heat exchange medium, and the heat exchange medium exchanges heat with the battery cell 100 through the heat exchange assembly 20 .

[0126] In the embodiment of the present application, a collecting plate 40 is provided, and it is more convenient to uniformly transport the heat exchange medium to the heat exchange channel through the collecting plate 40 .

[0127] An embodiment of the present application provides a battery, which includes the battery box of any one of the above embodiments and a battery cell 100 , wherein the battery cell 100 is located in a receiving cavity 11 .

[0128] There may be multiple battery cells 100 in the battery box, and the multiple battery cells 100 may be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cells 100 are both connected in series and in parallel. The multiple battery cells 100 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 100 is accommodated in the box 10; of course, the multiple battery cells 100 may be first connected in series, in parallel, or in a mixed connection to form a battery module, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and then accommodated in the box 10.

[0129] Each battery cell 100 may be a secondary battery or a primary battery, or a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 100 may be cylindrical, flat, rectangular, or in other shapes.

[0130] In the battery provided in the embodiment of the present application, when the insulation between the heat exchange assembly 20 and the battery cell 100 fails, the conductive member 30 disconnects the electrical connection between the housing 10 and the heat exchange assembly 20, thereby reducing the impact on the stability of the battery and reducing the possibility of causing a safety accident.

[0131] An embodiment of the present application provides an electrical device, which includes the battery in the above embodiment, and the battery is used to provide electrical energy.

[0132] The embodiment of the present application provides an electric device using a battery as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop, 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.

[0133] In some embodiments of the present application, when the electrical device is a vehicle, the battery can not only serve as the operating power source of the vehicle, but also as the driving power source of the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0134] In the electric device provided in the embodiment of the present application, when the insulation between the heat exchange assembly 20 and the battery cell 100 fails, the conductive member 30 disconnects the electrical connection between the housing 10 and the heat exchange assembly 20, thereby improving the stability of the electric device.

[0135] An embodiment of the present application provides a battery box, which includes a box body 10, a heat exchange assembly 20 and a conductive member 30. The box body 10 has a receiving cavity 11, and the box body 10, the heat exchange assembly 20 and the conductive member 30 are all located in the receiving cavity 11.

[0136] The conductive member 30 includes a mounting housing 31 , two electrical connection portions 32 , a conductive column 33 , an electromagnetic control assembly 34 , a first elastic member 35 and a connecting rod 36 .

[0137] The mounting housing 31 has a first sliding groove 311 extending along the first direction X, and the mounting housing 31 has a connecting hole 313, which is connected to the first sliding groove 311. The connecting hole 313 penetrates the opposite side walls of the mounting housing 31 along the second direction Y, and one of the side walls of the mounting housing 31 arranged along the third direction Z has a mounting hole 312, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0138] The two electrical connection parts 32 are respectively located at opposite sides of the mounting housing 31 along the second direction Y, and the two electrical connection parts 32 are respectively electrically connected to the box body 10 and the heat exchange assembly 20. The electrical connection part 32 includes a main body 321 and an extension part 322, the main body 321 is located in the connection hole 313, the extension part 322 is connected to the main body 321, the main body 321 is located on one side of the extension part 322 away from the bottom surface of the first sliding groove 311 along the first direction X, and the extension part 322 is connected to the side wall of the mounting housing 31.

[0139] The conductive pillar 33 is slidably located in the first sliding groove 311, and the conductive pillar 33 extends along the first direction X. The middle of the conductive pillar 33 is electrically connected to the main body 321. The middle of the conductive pillar 33 has a limiting groove 331, and the limiting groove 331 surrounds the side wall of the conductive pillar 33. The orthographic projection of one end of the conductive pillar 33 away from the bottom surface of the first sliding groove 311 on the second plane is located within the orthographic projection of the middle of the conductive pillar 33 on the second plane and does not completely overlap, and the second plane is perpendicular to the first direction X.

[0140] The electromagnetic control assembly 34 includes a limiting column 341 and a control member 342. The limiting column 341 has a first end 3411 and a second end 3412 arranged relatively along the third direction Z, and a step 3413 is provided in the middle of the limiting column 341, so that the orthographic projection of the second end 3412 on the first plane is located within the orthographic projection of the first end 3411 on the first plane and does not completely overlap, the first plane is perpendicular to the third direction Z, the first end 3411 is located in the limiting groove 331, and the step 3413 is located in the mounting hole 312.

[0141] The control member 342 includes a mounting seat 3421, a second elastic member 3423 and a coil 3424. The mounting seat 3421 is connected to the mounting housing 31, and has a second sliding groove 3422 extending along the third direction Z. The second sliding groove 3422 is connected to the mounting hole 312, and the second end 3412 is located in the second sliding groove 3422. The second elastic member 3423 is located in the mounting hole 312, and the opposite ends of the second elastic member 3423 along the third direction Z are respectively against the step 3413 and the mounting seat 3421, and the coil 3424 surrounds the mounting seat 3421, and the two ends of the coil 3424 are electrically connected to the heat exchange assembly 20.

[0142] The first elastic member 35 is located in the first sliding groove 311, and the opposite ends of the connecting rod 36 are respectively connected to the two side walls of the mounting shell 31 arranged along the third direction Z. The connecting rod 36 is close to the bottom surface of the first sliding groove 311. One end of the first elastic member 35 is connected to the connecting rod 36, and the other end of the first elastic member 35 is connected to the conductive column 33. The first elastic member 35 can be a tension spring.

[0143] The battery box may include multiple heat exchange components 20 and multiple conductive members 30, and the multiple conductive members 30 are electrically connected to the multiple heat exchange components 20 in a one-to-one correspondence. The battery box also includes a current collecting plate 40, which has a current collecting channel, and the heat exchange channels of the multiple heat exchange components 20 are all connected to the current collecting channel.

[0144] 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 battery box, characterized in that: The battery box comprises: The box body (10) has a receiving cavity (11); A heat exchange component (20) located in the accommodating cavity (11); A conductive member (30) is located in the accommodating cavity (11), the conductive member (30) electrically connecting the housing (10) and the heat exchange assembly (20), and the conductive member (30) is configured to disconnect the electrical connection between the housing (10) and the heat exchange assembly (20) when a current flowing through the conductive member (30) exceeds a preset current value.

2. The battery box according to claim 1, characterized in that: The conductive member (30) comprises: A mounting housing (31) having a first sliding groove (311) extending along a first direction; Two electrical connection parts (32), respectively located on two opposite sides of the mounting shell (31) along a second direction, the two electrical connection parts (32) being electrically connected to the box body (10) and the heat exchange assembly (20) respectively, and the second direction intersects with the first direction; A conductive column (33) extending along the first direction, the conductive column (33) being slidably located in the first sliding groove (311), and the conductive column (33) electrically connecting the two electrical connection parts (32); An electromagnetic control component (34) is connected to the mounting housing (31), the electromagnetic control component (34) is electrically connected to the heat exchange component (20), and the electromagnetic control component (34) is configured to, when a current flowing through the electromagnetic control component (34) exceeds a preset current value, control the conductive column (33) to move along the first direction to disconnect the electrical connection between the two electrical connection parts (32).

3. The battery box according to claim 2, characterized in that: One of the two side walls of the installation housing (31) arranged along a third direction has a mounting hole (312), and the first direction, the second direction and the third direction intersect each other in pairs; The conductive member (30) further comprises: A first elastic member (35) is located in the first sliding groove (311), one end of the first elastic member (35) is connected to the mounting housing (31), the other end of the first elastic member (35) is connected to the conductive column (33), and a limiting groove (331) is provided in the middle of the conductive column (33); The electromagnetic control component (34) comprises: A limiting column (341), wherein the middle portion of the limiting column (341) is located in the mounting hole (312), and one end of the limiting column (341) is located in the limiting groove (331); A control component (342) is electrically connected to the heat exchange component (20), and the control component (342) is configured to control the limiting column (341) to move toward a side away from the conductive column (33) when the current flowing through the control component (342) exceeds the preset current value.

4. The battery box according to claim 3, characterized in that: The limiting column (341) has a first end (3411) and a second end (3412) arranged relatively to each other along the third direction, and a step (3413) is provided in the middle of the limiting column (341), so that the orthographic projection of the second end (3412) on the first plane is located within the orthographic projection of the first end (3411) on the first plane and does not completely overlap, the first plane is perpendicular to the third direction, and the first end (3411) is located in the limiting groove (331); The control element (342) comprises: A mounting seat (3421) connected to the mounting shell (31), the mounting seat (3421) having a second sliding groove (3422) extending along the third direction, the second sliding groove (3422) being in communication with the mounting hole (312), and the second end (3412) being located in the second sliding groove (3422); A second elastic member (3423) is located in the mounting hole (312), and opposite ends of the second elastic member (3423) along the third direction respectively abut against the step (3413) and the mounting seat (3421); The coil (3424) surrounds the mounting seat (3421), and two ends of the coil (3424) are electrically connected to the heat exchange component (20).

5. The battery box according to claim 3, characterized in that: The conductive member (30) further comprises: A connecting rod (36), wherein opposite ends of the connecting rod (36) are respectively connected to two side walls of the mounting shell (31) arranged along the third direction, the connecting rod (36) is close to the bottom surface of the first sliding groove (311), and one end of the first elastic member (35) is connected to the connecting rod (36).

6. The battery box according to claim 5, characterized in that: The first elastic member (35) comprises a tension spring.

7. The battery box according to claim 3, characterized in that: The limiting groove (331) surrounds the side wall of the conductive column (33).

8. The battery box according to any one of claims 2 to 7, characterized in that: The mounting shell (31) has a connecting hole (313), the connecting hole (313) is connected to the first sliding groove (311), the connecting hole (313) passes through the two opposite side walls of the mounting shell (31) along the second direction, the electrical connecting part (32) includes a main body (321), the main body (321) is located in the connecting hole (313), and the conductive column (33) is electrically connected to the main body (321).

9. The battery box according to claim 8, characterized in that: The electrical connection portion (32) further comprises an extension portion (322), wherein the extension portion (322) is connected to the main body portion (321), the main body portion (321) is located on a side of the extension portion (322) away from the bottom surface of the first sliding groove (311) along the first direction, and the extension portion (322) is connected to a side wall of the mounting shell (31).

10. The battery box according to any one of claims 2 to 7, characterized in that: The middle of the conductive column (33) is electrically connected to the two electrical connection portions (32); an orthographic projection of an end of the conductive column (33) away from the bottom surface of the first sliding slot (311) on a second plane is located within and does not completely overlap with an orthographic projection of the middle of the conductive column (33) on the second plane; and the second plane is perpendicular to the first direction.

11. The battery box according to any one of claims 1 to 7, characterized in that: The battery box comprises a plurality of the heat exchange components (20) and a plurality of the conductive members (30), and the plurality of the conductive members (30) are electrically connected to the plurality of the heat exchange components (20) in a one-to-one correspondence.

12. The battery box according to claim 11, characterized in that: The heat exchange component (20) has a heat exchange channel, and the battery box further comprises: A current collecting plate (40) is located in the accommodating cavity (11); the current collecting plate (40) has a current collecting channel; the heat exchange channel is in communication with the current collecting channel.

13. A battery, characterized in that: The battery comprises: A battery box as claimed in any one of claims 1 to 12; A battery cell (100) is located in the accommodating cavity (11).

14. An electrical device, characterized in that: The electrical device comprises the battery as claimed in claim 13, wherein the battery is used to provide electrical energy.

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