Battery circuit breaking unit, battery and electric device

Abstract

The utility model relates to a battery circuit breaking unit, a battery and a power utilization device, and the battery circuit breaking unit comprises a heat management assembly which comprises a heat exchange plate and a heat conduction part which are arranged in a stacked manner; the circuit breaking assembly is arranged on the surface of the side, away from the heat exchange plate, of the heat conduction piece, the circuit breaking assembly comprises a circuit breaking element and a connecting bar electrically connected with the circuit breaking element, the connecting bar is arranged on the side, close to the heat management assembly, of the circuit breaking element, and the connecting bar abuts against the heat management assembly. The battery circuit breaking unit provided by the utility model can improve the thermal management performance.

Description

Technical Field

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

[0002] In the existing vehicle market, the proportion of new energy vehicles is gradually increasing, and the various technologies related to the energy batteries used in them are also gradually developing. Existing batteries are usually equipped with a battery circuit breaker unit, which is used to cut off the preset circuit in the event of a fault or external impact, and provide electrical protection for the energy battery. The battery circuit breaker unit is usually equipped with relays, fuses and other components with high heat generation, but the battery circuit breaker unit and the space inside the battery are small, and it is difficult to set up a cooling system. In the event of overheating, it cannot be cooled quickly, resulting in poor stability and low service life of the battery circuit breaker unit.

[0003] Therefore, there is an urgent need for a battery disconnect unit that can improve thermal management performance and a corresponding battery and electrical device. Utility Model Content

[0004] The embodiments of the present application provide a battery disconnect unit, a battery, and an electrical device, wherein the battery disconnect unit can improve thermal management performance.

[0005] In the first aspect, according to an embodiment of the present application, a battery circuit breaker unit is proposed, including a thermal management component and a circuit breaker component, the thermal management component including stacked heat exchange plates and heat conductive parts; the circuit breaker component is arranged on a surface of the heat conductive part away from the heat exchange plates, the circuit breaker component includes a circuit breaker element and a connecting bar electrically connected to the circuit breaker element, the connecting bar is arranged on a side of the circuit breaker element close to the thermal management component, and the connecting bar abuts against the thermal management component.

[0006] According to one aspect of the embodiment of the present application, in the thickness direction of the heat exchange plate, the orthographic projection of the heat conducting member covers the orthographic projections of the circuit breaker element and the connecting row.

[0007] According to one aspect of an embodiment of the present application, the battery disconnect unit further comprises a support structure, which is at least partially disposed on a side of the disconnect component away from the thermal management component; the disconnect element is detachably connected to the connecting row and the support structure.

[0008] According to one aspect of the embodiment of the present application, the heat conducting member is adhesively connected to the heat exchange plate, and in the thickness direction of the heat exchange plate, the size of the heat conducting member is 5 mm to 10 mm.

[0009] According to one aspect of the embodiments of the present application, the thermal management component further includes an insulating film, and the insulating film is at least partially disposed between the connecting row and the heat conducting member.

[0010] According to one aspect of the embodiment of the present application, in the thickness direction of the heat exchange plate, the size of the insulating film is 0.3 mm to 1 mm, and the orthographic projection of the insulating film covers the orthographic projection of the heat conductor.

[0011] According to one aspect of the embodiment of the present application, the circuit breaking element includes at least one of a relay and a fuse.

[0012] In the second aspect, according to an embodiment of the present application, a battery is proposed, comprising a casing, a battery circuit breaker unit in any embodiment of the first aspect, and a battery cell, wherein the casing has a accommodating cavity; the battery circuit breaker unit is arranged in the casing; the battery cell is arranged in the accommodating cavity and is at least partially connected to the thermal management component.

[0013] According to one aspect of an embodiment of the present application, the heat exchange plate is provided with a flow channel, and the battery further includes a flow rate regulator, which is connected to the flow channel and can regulate the flow rate of the heat exchange medium in the flow channel.

[0014] In a third aspect, according to an embodiment of the present application, an electrical device is proposed, characterized in that it includes a battery in any embodiment of the second aspect, and the battery is used to provide electrical energy.

[0015] The battery circuit breaker unit provided in the embodiment of the present application includes a thermal management component for providing a heat exchange function and various circuit breaker elements for realizing a circuit protection function. A connecting row can be used to electrically connect the various circuit breaker elements and between the circuit breaker elements and connecting elements such as interfaces, and the connecting row is arranged on a side of the circuit breaker element close to the thermal management component so that the connecting row can contact the thermal management component, thereby improving the efficiency of heat exchange, thereby improving the overall thermal management performance of the battery circuit breaker unit, and reducing the possibility of shortening the working life of the battery circuit breaker unit due to untimely heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0017] Figure 1 is a schematic structural diagram of a battery disconnect unit provided by an embodiment of the present application;

[0018] Figure 2 It is a partial structural schematic diagram of a battery disconnect unit provided by an embodiment of the present application;

[0019] Figure 3 It is a partial structural schematic diagram of a battery disconnect unit provided in another embodiment of the present application.

[0020] in:

[0021] 100 - battery disconnect unit;

[0022] 10- thermal management component; 20- circuit breaker component; 30- support structure;

[0023] 11-heat exchange plate; 12-heat conducting member; 13-insulating film; 21-circuit-breaking element; 22-connecting row;

[0024] 111- flow channel; 211- relay; 212- fuse;

[0025] X-thickness direction.

[0026] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0027] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0028] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structures in the molding mold and molding method of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the meaning of "multiple" is more than two, and the terms "installation" and "connection" 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 directly connected or indirectly connected; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inside", "outside", etc. are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0029] In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] With the development of related technologies in the battery field, the technology of integrating the "three electrics" of batteries, electronic controls, and motors in new energy vehicles has received widespread attention. As the parameters and functions of energy batteries in new energy vehicles are different, the battery circuit breaker units therein also have a variety of different structures. Battery circuit breaker units are usually used to protect high-voltage circuits related to energy batteries, such as disconnecting or connecting preset circuits when overload, overheating, etc. occur.

[0031] On this basis, the applicant discovered that in the existing battery circuit breaker unit, components such as relays and fuses dissipate a lot of heat, and due to limitations such as small internal space and complex connection relationships, the heat-generating components in the battery circuit breaker unit are usually not able to dissipate heat in a timely manner, resulting in a high temperature rise, which in turn leads to a reduction in the service life and reliability of the battery circuit breaker unit.

[0032] In order to solve the above problems, the embodiments of the present application provide a battery disconnect unit, a battery and an electrical device, wherein the battery disconnect unit can improve the thermal management performance and enhance the stability and reliability of the battery disconnect unit.

[0033] It can be understood that the following embodiments of the present application only illustrate the application of the battery circuit breaker unit in new energy vehicles as an example, but the battery circuit breaker unit provided in the embodiments of the present application is not limited to the following embodiments, and can also be used in other occasions where high-voltage circuits need to be protected and have certain requirements for thermal management performance, and protect them.

[0034] In order to better understand this application, Figures 1 to 3 Describe in detail.

[0035] Please also read Figures 1 to 3 , Figure 1 is a schematic structural diagram of a battery disconnect unit provided by an embodiment of the present application; Figure 2 It is a partial structural schematic diagram of a battery disconnect unit provided by an embodiment of the present application; Figure 3 It is a partial structural schematic diagram of a battery disconnect unit provided in another embodiment of the present application.

[0036] In the first aspect, according to an embodiment of the present application, a battery circuit breaker unit 100 is proposed, including a thermal management component 10 and a circuit breaker component 20. The thermal management component 10 includes a stacked heat exchange plate 11 and a heat conductor 12; the circuit breaker component 20 is arranged on a side surface of the heat conductor 12 away from the heat exchange plate 11, and the circuit breaker component 20 includes a circuit breaker element 21 and a connecting row 22 electrically connected to the circuit breaker element 21. The connecting row 22 is arranged on a side of the circuit breaker element 21 close to the thermal management component 10, and the connecting row 22 is abutted against the thermal management component 10.

[0037] The embodiment of the present application provides a battery circuit breaker unit 100, which includes a circuit breaker component 20 for realizing the required electrical function and a thermal management component 10 for providing a thermal management function for the circuit breaker component 20, wherein the thermal management component 10 is used to keep the temperature of the circuit breaker component 20 within a preset range during operation, that is, to cool and heat the circuit breaker component 20. It is understandable that the following embodiments of the present application are described by taking the heat dissipation function of the thermal management component 10 as an example, but it should be understood that the present application is not limited thereto, and the thermal management component 10 can provide a heating function by changing the temperature of the heat exchange medium or adding a heating element.

[0038] The thermal management component 10 includes a heat exchange plate 11 and a heat conductor 12. The heat exchange plate 11 is used to achieve heat exchange. The heat exchange plate 11 can be optionally a plate-shaped member extending along a plane, and multiple flow channels 111 can be arranged inside; alternatively, the heat exchange plate 11 can be composed of a plurality of mutually spaced heat exchange tubes, and these heat exchange tubes can be connected end to end in sequence or converge at opposite ends, etc. The present application does not make any specific limitation on this.

[0039] It can be understood that the thermal management component 10 in the embodiment of the present application is used to cool or heat the circuit breaker component 20. The heat exchange plate 11 in the thermal management component 10 can be set as a plate-shaped component with a smaller area corresponding to the volume of the circuit breaker component 20. In the battery using the battery circuit breaker unit 100, the heat exchange plate 11 can be connected to another larger thermal management component used to provide heat exchange for other components such as battery modules, so that the heat exchange plate 11 and the aforementioned thermal management component can share a heat exchange medium. Alternatively, the heat exchange plate 11 in the thermal management component 10 can directly exchange heat with other components such as battery modules, that is, the larger thermal management component in the battery can be reused as the heat exchange plate 11 in the battery circuit breaker unit 100, thereby further simplifying the structure and saving space.

[0040] The heat conducting member 12 is used to transfer heat with high efficiency and can provide a certain degree of protection for the adjacent circuit breaker assembly 20. The heat conducting member 12 is sandwiched between the circuit breaker assembly 20 and the heat exchange plate 11. Depending on the material and thickness of the heat conducting member 12, it can be connected by bonding, fasteners, clamping, etc. The heat conducting member 12 can be made of a material with a high thermal conductivity.

[0041] The circuit breaker assembly 20 may include multiple circuit breaker elements 21 and be electrically connected through a connecting row 22 in a preset manner. The connecting row 22 may optionally include a positive connecting row 22 and a negative connecting row 22, or the connecting row 22 may optionally include multiple sub-connecting rows 22. It is only necessary to be able to electrically connect each element according to a preset circuit.

[0042] Each circuit breaker element 21 in the circuit breaker assembly 20 may include required circuit elements such as a fuse 212, a relay 211, and a contactor. Each element may be electrically connected via a connecting bar 22, and the connecting bar 22 may be made of copper or a copper-containing alloy.

[0043] Optionally, the battery circuit breaker unit 100 may be disposed in a protective box or a battery case to provide protection therefor, and an interface may be provided through a preset position on the box or case to electrically connect with various components in the circuit breaker assembly 20. In the embodiment where the battery circuit breaker unit 100 is disposed in a box or case, the heat exchange plate 11 in the thermal management assembly 10 may be reused as a side wall portion, or the heat exchange plate 11 may be stacked with a side wall portion.

[0044] In the circuit breaker assembly 20, at least part of the circuit breaker elements 21 are electrically connected to the connecting row 22 on the side close to the thermal management assembly 10, that is, the circuit breaker element 21 is inverted so that the connecting row 22 is arranged on the side close to the thermal management assembly 10, preferably abutting against the thermal management assembly 10, for example, it can be abutting against the side of the heat conductor 12 away from the heat exchange plate 11, so as to improve the thermal conductivity efficiency, and then improve the heat dissipation efficiency, so as to make the temperature of the circuit breaker element 21 within the preset range, thereby extending the overall service life of the battery circuit breaker unit 100.

[0045] In some optional embodiments, in the thickness direction X of the heat exchange plate 11 , the orthographic projection of the heat conducting member 12 covers the orthographic projections of the circuit breaker element 21 and the connecting row 22 .

[0046] The heat conducting member 12 in the embodiment of the present application is used to transfer the heat emitted by the circuit-breaking element 21 to the heat exchange plate 11, and then dissipate the heat through the flow of the heat exchange medium inside the heat exchange plate 11. Therefore, in the thickness direction X, the heat exchange plate 11 can be arranged corresponding to the circuit-breaking element 21 and the connecting row 22 and have a large coverage area. Specifically, in the thickness direction X, the orthographic projection of the heat conducting member 12 can cover the orthographic projection of the circuit-breaking element 21 and the orthographic projection of the connecting row 22, and can further cover the orthographic projection of the circuit-breaking assembly 20, so as to make the heat transfer smooth.

[0047] It can be understood that, here, making the orthographic projection of the heat conductor 12 cover the orthographic projection of the connecting row 22 means covering at least the partial area where the connecting row 22 and the circuit-breaking element 21 are electrically connected to each other, that is, the connecting row 22 as a whole can be extended along a preset electrical connection path, and can include a section extending to the side of the circuit-breaking element 21 or away from the side of the thermal management component 10, and can also include a section connected to another element that does not use the thermal management component 10 for heat dissipation.

[0048] On this basis, the aforementioned part of the connecting bar 22 not disposed between the circuit breaker element 21 and the thermal management component 10 can indirectly dissipate heat through the partial section connected to or adjacent to the thermal management component 10. Specifically, the connecting bar 22 is usually made of metal materials such as copper and its alloys, so that the connecting bar 22 has good thermal conductivity, thereby being able to dissipate heat to the adjacent sections and the adjacent circuit breaker element 21 through the partial section of the connecting bar 22 connected to the thermal management component 10, thereby improving the overall heat dissipation efficiency of the battery disconnection unit 100.

[0049] Optionally, the heat conducting member 12 may be a gasket or a pad with a flat surface, and the heat conducting member 12 may extend parallel to the heat exchanging plate 11 and be connected to the heat exchanging plate 11. In an embodiment where the surface of the heat exchanging plate 11 is uneven, the heat conducting member 12 may be used to improve the surface flatness so as to facilitate heat conduction with the connecting row 22.

[0050] In some optional embodiments, the battery disconnect unit 100 further includes a support structure 30, which is at least partially disposed on a side of the disconnect component 20 away from the thermal management component 10; the disconnect element 21 is detachably connected to the connecting row 22 and the support structure 30.

[0051] The battery circuit breaker unit 100 in the embodiment of the present application also includes a support structure 30 located above the circuit breaker component 20, that is, on the other side opposite to the thermal management component 10. The support structure 30 can be selected as a support frame, a support plate or other components. Such components can be detachably connected to other support structures 30 or heat exchange plates 11 outside the battery circuit breaker unit 100 to provide a fixing function; alternatively, the battery circuit breaker unit 100 can be arranged in a box body or a box body, in which case the support structure 30 can be selected as composed of the top wall of the box body.

[0052] Optionally, the support structure 30 may be made of an insulating material to prevent electrical interference to the circuit breaker element 21 .

[0053] Optionally, in an embodiment where the support structure 30 is formed by the top wall of the box body that accommodates the battery circuit breaker unit 100, the bottom wall of the box body can be directly formed by the thermal management component 10. At the same time, the box body can include a main body part and a box cover that are interlocked with each other, and the box cover can be located on the top wall or the side wall. A seal can be optionally sandwiched between the two to improve the protection of the battery circuit breaker unit 100. The seal can be extended along the connection so that it surrounds the opening of the main body part to improve the uniform reliability of the seal everywhere. Optionally, the seal can be an annular sealing strip or annular sealing gasket whose shape matches the shape of the aforementioned opening, and can be made of a material with a certain elasticity such as rubber or resin.

[0054] Furthermore, the two opposite sides of the circuit-breaking element 21 in the thickness direction X can be detachably connected to the connecting row 22 and the supporting structure 30, respectively, and can be connected by connecting members such as bolts or studs. By providing connecting members on both sides of the circuit-breaking element 21, the position of the circuit-breaking element 21 can be further stabilized and not easily shaken, and the possibility of the connecting row 22 being worn due to vibration can be reduced when the battery circuit-breaking unit 100 or the battery as a whole is subjected to external impact.

[0055] In some optional embodiments, the heat conducting member 12 is bonded to the heat exchange plate 11 , and in the thickness direction X of the heat exchange plate 11 , the size of the heat conducting member 12 is 5 mm to 10 mm.

[0056] The heat conducting member 12 may be bonded to the heat exchange plate 11 by adhesive materials such as structural adhesive to ensure a stable connection between the two. At the same time, the heat conducting member 12 may be a flat pad made of materials such as silicone, silicone grease, copper, carbon fiber, etc., so that it has good heat conduction function and is convenient for providing support for the circuit breaker element 21.

[0057] In the thickness direction X, the extension dimension of the heat conductor 12 can be 5 mm to 10 mm, and can be further selected to be about 6 mm to 7 mm. The specific thickness dimension of the heat conductor 12 can be selected according to its thermal conductivity performance. It only needs to be able to quickly conduct the heat generated in the circuit breaker element 21 to the heat exchange plate 11. This application does not make any specific limitation on this.

[0058] In some optional embodiments, the thermal management component 10 further includes an insulating film 13 , and the insulating film 13 is at least partially disposed between the connecting row 22 and the heat conducting member 12 .

[0059] The thermal management component 10 may also be provided with an insulating film 13 for insulating the connection row 22 from other layer structures, and the insulating film 13 is sandwiched between the connection row 22 and the heat conductor 12. In the embodiment where the heat conductor 12 is made of insulating material, the insulating film 13 may be provided only below the connection row 22, that is, in the thickness direction X, so that the orthographic projection of the insulating film 13 covers the orthographic projection of the connection row 22; in the embodiment where the heat conductor 12 is a conductor or the insulation reliability needs to be further improved, the insulating film 13 may also be provided to cover the entire upper surface of the heat conductor 12, that is, in the thickness direction X, so that the orthographic projection of the insulating film 13 covers the orthographic projection of the heat conductor 12.

[0060] Optionally, in the battery circuit breaker unit 100, the insulating film 13 at each circuit breaker element 21 can be made of the same material and thickness, or, according to the differences in electrical parameters of each element, insulating films 13 of different materials and thicknesses can be set specifically. The present application does not make any specific limitation on this, and it is only necessary to avoid leakage or short circuit of the connecting bar 22.

[0061] In some optional embodiments, in the thickness direction X of the heat exchange plate 11 , the size of the insulating film 13 is 0.3 mm to 1 mm, and the orthographic projection of the insulating film 13 covers the orthographic projection of the heat conducting member 12 .

[0062] The insulating film 13 can be a thin film structure made of an insulating material with good heat resistance such as PET (Polyethylene terephthalate). The thickness of the layer structure can be 0.3mm to 1mm, and can be further selected to be about 0.5mm, so that the insulating film 13 does not occupy too much space while having good insulating properties.

[0063] The insulating film 13 is used to insulate the connecting row 22 from the heat exchange plate 11 and other components in the thermal management component 10 to prevent the circuit breaker component 20 from short circuiting or leakage. In order to improve the reliability of insulation and facilitate its installation, the insulating film 13 can be adhesively connected to the heat conductor 12 and cover the heat conductor 12.

[0064] Optionally, when the insulating film 13 is provided, it may be first connected to the heat conducting member 12 and then both connected to the heat exchange plate 11 to facilitate processing.

[0065] In some optional embodiments, the circuit breaker element 21 includes at least one of a relay 211 and a fuse 212 .

[0066] The aforementioned circuit breaker element 21 refers to a circuit element in the battery circuit breaker unit 100 for realizing a preset function. Optionally, these circuit breaker elements 21 may include a fuse 212 and one or more relays 211. The fuse 212 may be separately provided and connected in series in a preset circuit, or the fuse 212 may include a plurality of sub-fuses 212, which may be connected in parallel to obtain the required functional parameters. The fuse 212 can be disconnected when the current in the circuit connected to the fuse 212 exceeds a preset value, so as to ensure the safety of other circuit structures and electronic components.

[0067] The fuse 212 and the relay 211 are components with higher heat generation in the circuit breaker assembly 20. By arranging the connecting row 22 of the above two components on the side close to the heat exchange plate 11 and conducting heat through the heat conductor 12, etc., the heat dissipation efficiency of the above components can be specifically improved, so that the overall temperature of the battery circuit breaker unit 100 is within the preset temperature range.

[0068] Optionally, depending on the position of each component and the connection relationship, the fuse 212 may be spaced a certain distance from the heat conductor 12, and the insulating film 13 may not be provided in some areas where the connection row 22 is not provided, so as to simplify the process and reduce costs.

[0069] In the second aspect, according to an embodiment of the present application, a battery is proposed, comprising a casing, a battery circuit breaker unit 100 in any embodiment of the first aspect, and a battery cell, wherein the casing has a receiving cavity; the battery circuit breaker unit 100 is arranged in the casing; the battery cell is arranged in the receiving cavity and is at least partially connected to the thermal management component 10.

[0070] The present application also provides a battery including the aforementioned battery circuit breaker unit 100. Specifically, the battery includes a box for providing support and protection, the battery circuit breaker unit 100 in any embodiment of the aforementioned first aspect, and a plurality of battery cells.

[0071] Specifically, the box is used to accommodate the battery cells and the battery circuit breaker unit 100, and the box can be a variety of structures. In some embodiments, the box may include a first box portion and a second box portion, the first box portion and the second box portion cover each other, and the first box portion and the second box portion jointly define a receiving portion for accommodating the battery cells. The second box portion can be a hollow structure with one end open, the first box portion is a plate-like structure, and the first box portion covers the open side of the second box portion to form a box with a receiving portion; the first box portion and the second box portion can also be a hollow structure with one side open, and the open side of the first box portion covers the open side of the second box portion to form a box with a receiving portion. Among them, the first box portion and the second box portion can be a variety of shapes, such as a cylinder, a cuboid, etc.

[0072] In a battery, there can be one or more battery cells. If there are multiple battery cells, the multiple battery cells can be connected in series, in parallel, or in mixed connection. Mixed connection means that multiple battery cells are connected in series and in parallel. Multiple battery cells can be directly connected in series, in parallel, or in mixed connection, and then the whole formed by multiple battery cells is accommodated in a box; of course, multiple battery cells can also be connected in series, in parallel, or in mixed connection to form a battery module, and then multiple battery modules are connected in series, in parallel, or in mixed connection to form a whole, and accommodated in a box.

[0073] In some embodiments, there are multiple battery cells, and the multiple battery cells are first connected in series, in parallel, or in hybrid connection to form a battery module. The multiple battery modules are then connected in series, in parallel, or in hybrid connection to form a whole, and are contained in a box.

[0074] Optionally, the thermal management component 10 in the battery circuit breaker unit 100 includes a heat exchange plate 11, which can be arranged on a side wall of the box body, such as the bottom wall or the top wall, and multiple battery cells are arranged to be connected to the thermal management component 10 so that each battery cell can have good heat exchange efficiency.

[0075] The thermal management component 10 can be used for heat exchange between the circuit breaker component 20 and the battery cell at the same time. Optionally, depending on the setting position of the battery circuit breaker unit 100, the battery cell can be set on the same side of the thermal management component 10 as the circuit breaker component 20, so that the battery cell and the circuit breaker component 20 are staggered with each other; or, the battery cell can be set on the opposite sides of the thermal management component 10 in the thickness direction X with the circuit breaker component 20.

[0076] In some optional embodiments, the heat exchange plate 11 is provided with a flow channel 111 , and the battery further includes a flow rate regulator, which is connected to the flow channel 111 and can regulate the flow rate of the heat exchange medium in the flow channel 111 .

[0077] At least one flow channel 111 may be provided in the heat exchange plate 11, and opposite ends of the flow channel 111 in its extension direction may be connected to the liquid inlet and the liquid outlet respectively, so that the heat exchange medium can flow in the flow channel 111 and exchange heat with the circuit breaker assembly 20 and the battery cell, etc., to achieve heat dissipation. Optionally, multiple flow channels 111 may be provided in the heat exchange plate 11 at the same time, and at least part of these flow channels 111 may share the same liquid inlet and / or the same liquid outlet to simplify the structure and save space.

[0078] In the battery, a flow rate regulating component can also be provided, and the flow rate regulating component can be connected to the flow channel 111. For example, it can be optionally provided between the liquid inlet or the liquid outlet and the container storing the heat exchange medium. The flow rate regulating component can be used to adjust the flow rate of the heat exchange medium in the flow channel 111, so that the user can manually or automatically adjust the flow rate of the heat exchange medium according to the real-time heating conditions or real-time temperature of the circuit breaker assembly 20 and the battery cell, thereby further improving the temperature stability in the battery.

[0079] Optionally, since the heat exchange assembly is used to provide heat exchange function for the circuit breaker assembly 20 and the battery cell at the same time, the flow distribution of the heat exchange medium can be further changed by adjusting parameters such as the flow resistance of the flow channel 111 in the area corresponding to the above two components in the heat exchange plate 11, so that the heat dissipation effect on the circuit breaker assembly 20 and the battery cell is uniform, and the thermal management performance that the heat exchange plate 11 can be fully utilized.

[0080] In a third aspect, according to an embodiment of the present application, an electrical device is proposed, characterized in that it includes a battery in any embodiment of the second aspect, and the battery is used to provide electrical energy.

[0081] The battery and the electrical device in the embodiment of the present application may have all the beneficial effects of the battery disconnect unit 100 provided in the embodiment of the present application. For details, please refer to the specific description of the battery disconnect unit 100 in the above embodiments, which will not be repeated in this embodiment.

[0082] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery disconnect unit, characterized in that: include: A thermal management component, including stacked heat exchange plates and heat conducting elements; A circuit breaker assembly is arranged on a surface of the heat conductive member facing away from the heat exchange plate. The circuit breaker assembly includes a circuit breaker element and a connection row electrically connected to the circuit breaker element. The connection row is arranged on a side of the circuit breaker element close to the thermal management assembly, and the connection row abuts against the thermal management assembly.

2. The battery disconnect unit according to claim 1, characterized in that: In the thickness direction of the heat exchange plate, the orthographic projection of the heat conducting member covers the orthographic projections of the circuit breaker element and the connecting row.

3. The battery disconnect unit according to claim 1, characterized in that: The battery disconnect unit further comprises a support structure, wherein the support structure is at least partially disposed on a side of the disconnect component away from the thermal management component; The circuit breaker element is detachably connected to the connection row and the support structure.

4. The battery disconnect unit according to claim 1, characterized in that: The heat conducting member is bonded to the heat exchange plate, and in the thickness direction of the heat exchange plate, the size of the heat conducting member is 5 mm to 10 mm.

5. The battery disconnect unit according to claim 1, characterized in that: The thermal management component further includes an insulating film, which is at least partially disposed between the connecting row and the heat conducting member.

6. The battery disconnect unit according to claim 5, characterized in that: In the thickness direction of the heat exchange plate, the size of the insulating film is 0.3 mm to 1 mm, and the orthographic projection of the insulating film covers the orthographic projection of the heat conducting member.

7. The battery disconnect unit according to claim 1, characterized in that: The circuit breaker element includes at least one of a relay and a fuse.

8. A battery, characterized in that: include: A box body having a containing cavity; The battery disconnect unit according to any one of claims 1 to 7, arranged in the box; The battery cell is disposed in the accommodating cavity and is at least partially connected to the thermal management component.

9. The battery according to claim 8, characterized in that The heat exchange plate is provided with a flow channel, and the battery further comprises a flow rate regulating member, the flow rate regulating member is connected with the flow channel, and the flow rate regulating member can regulate the flow rate of the heat exchange medium in the flow channel.

10. An electrical device, characterized in that: The invention comprises a battery as claimed in any one of claims 8 to 9, wherein the battery is used for providing electric energy.

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