High-voltage box, battery and electric equipment

Abstract

The invention relates to the technical field of batteries, and provides a high-voltage box, a battery and electric equipment, the high-voltage box comprises a shell and a heating element, and the shell is provided with an accommodating cavity; the heating element is arranged in the accommodating cavity; the shell is internally provided with a heat exchange channel, and the heat exchange channel is configured to allow a heat exchange medium to circulate so as to exchange heat with the heating element. According to the high-voltage box provided by the invention, compared with an independent heat exchange mechanism arranged outside the shell of the high-voltage box, the heat exchange channel is arranged in the shell, so that a heat transfer path between the heating element and the heat exchange medium can be shortened, and the heat dissipation efficiency of the high-voltage box is effectively improved. Meanwhile, more space can be released from the periphery of the shell of the high-voltage box, parts required for heat dissipation are reduced, and the overall size of the high-voltage box can be reduced, so that the energy density of the battery is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a high-voltage box, a battery having the high-voltage box, and an electrical device having the battery. Background Art

[0002] In electrical equipment such as electric or hybrid-powered vehicles, the high-voltage box is a control unit used to distribute the energy of the power battery and is used to distribute the high voltage to the power battery.

[0003] Typically, the high-voltage box includes electrical components that generate heat during operation, such as a blade, and a heat exchange mechanism for dissipating heat and cooling the electrical components. In this way, the heat exchange mechanism is used to continuously dissipate heat and cool the electrical components.

[0004] However, the heat exchange mechanism is relatively independently arranged from the box body of the high-voltage box, for example, it is arranged outside the box body of the high-voltage box and fits with the outer wall of the box body. In this way, the heat transfer path of each electrical component is longer and the heat transfer efficiency is lower, making it difficult to maintain the high-voltage box working at a relatively suitable temperature. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide a high-voltage box, a battery and an electrical device, aiming to solve the technical problem of low heat dissipation efficiency of the existing high-voltage box.

[0006] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is:

[0007] In a first aspect, an embodiment of the present application provides a high-voltage box, comprising:

[0008] A housing having a receiving cavity;

[0009] A heating element, the heating element is arranged in the accommodating cavity;

[0010] Wherein, a heat exchange channel is provided in the shell, and the heat exchange channel is configured for heat exchange medium to flow through so as to perform heat exchange with the heating element.

[0011] Beneficial effects of the embodiments of the present application: Compared with setting an independent heat exchange mechanism outside the shell of the high-voltage box, the high-voltage box provided by the present application sets a heat exchange channel inside the shell to shorten the heat transfer path between the heating element and the heat exchange medium, effectively improving the heat dissipation efficiency of the high-voltage box. At the same time, the outer periphery of the shell of the high-voltage box can also release more space, reduce the parts required for heat dissipation, and also reduce the overall volume of the high-voltage box.

[0012] In one embodiment, the heating element is fixed on the inner wall of the accommodating cavity, and the heat exchange channel corresponds to the heating element.

[0013] In one embodiment, the high-pressure box further includes a heat exchange member, the heat exchange member is integrally formed with the shell, and the heat exchange member has the heat exchange channel therein.

[0014] In one embodiment, the heat exchange element is integrally formed with the shell through an injection molding process.

[0015] In one embodiment, at least a portion of the heat exchange element extends into the accommodating cavity.

[0016] In one embodiment, the shell is provided with an opening structure for the heat exchange element to extend into the accommodating cavity.

[0017] In one embodiment, the heat-generating element is in contact with at least a portion of the heat exchange member.

[0018] In one embodiment, the heat exchange element includes at least two relatively independently arranged heat exchange plates, and at least part of the heat exchange plates extends into the accommodating cavity.

[0019] In one embodiment, the heat exchange element is provided with a positioning structure which is adaptably connected to the shell.

[0020] In one embodiment, the positioning structure includes a convex portion convexly provided on the heat exchange element;

[0021] Alternatively, the positioning structure comprises a recessed portion formed on the heat exchange element;

[0022] Alternatively, the positioning structure includes a convex portion convexly provided on the heat exchange member, and a concave portion concavely formed on the heat exchange member.

[0023] In one embodiment, the convex portion includes a cylindrical boss provided on the heat exchange element; and / or the concave portion includes a circular hole opened on the heat exchange element.

[0024] In one embodiment, the high-voltage box further includes a heat conductive member, which is disposed on a side of the inner wall of the heating element facing the accommodating cavity, and the heating element exchanges heat with the heat exchange channel through the heat conductive member.

[0025] In one embodiment, the heating element includes a relay and a bar connected to the relay, the heat conductive member includes a thermal pad, and the bar exchanges heat with the heat exchange channel through the thermal pad.

[0026] In one embodiment, the heating element includes a diverter, the heat conductive member includes a stacked heat conductive block and a heat conductive pad, the diverter is connected to the heat conductive block, and the diverter exchanges heat with the heat exchange channel through the heat conductive block and the heat conductive pad.

[0027] In a second aspect, an embodiment of the present application further provides a battery, comprising the high-voltage box described above.

[0028] In a third aspect, an embodiment of the present application further provides an electrical device, comprising the battery described above.

[0029] It can be understood that the beneficial effects of the second and third aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 A schematic diagram of the structure of an electrical device provided in an embodiment of the present invention;

[0032] Figure 2 A schematic diagram of the structure of a battery provided by an embodiment of the present invention;

[0033] Figure 3 A schematic diagram of the structure of a high-voltage box provided in an embodiment of the present invention;

[0034] Figure 4 A cross-sectional view of a high-voltage box provided in Embodiment 1 of the present invention;

[0035] Figure 5 A cross-sectional view of a high-voltage box provided in Embodiment 2 of the present invention;

[0036] Figure 6 A schematic diagram of the structure of a high-voltage box provided in an embodiment of the present invention after removing the heating element;

[0037] Figure 7 An exploded view of a high-voltage box provided in an embodiment of the present invention after removing the heating element;

[0038] Figure 8 An exploded view of a high voltage box provided by an embodiment of the present invention;

[0039] Fig. 9 The present invention is a schematic structural diagram of a high-voltage box provided in an embodiment of the present invention at an upward viewing angle (a viewing angle from the bottom of the high-voltage box upward).

[0040] Among them, the reference numerals in the figure are:

[0041] 10000, electrical equipment; 1000, controller; 2000, motor;

[0042] 3000, battery; 3001, battery cell; 3002, battery case; 30021, first part; 30022, second part;

[0043] 100, high-voltage box; 10, shell; 20, heating element; 10a, accommodating cavity; 10b, heat exchange channel; 30, heat exchange member; 10c, open hole structure; 40, heat conductive member; 21, relay; 22, bar; 41, thermal pad; 23, diverter; 42, thermal block; 50, positioning structure; 51, cylindrical boss; 52, round hole; 31, heat exchange plate. DETAILED DESCRIPTION

[0044] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0045] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 the present invention.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0047] In the present invention, unless otherwise clearly specified and limited, the terms "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, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] The high-voltage box includes heat-generating components such as fuses, relays, current sensors, and pre-charging resistors, and each component is arranged in the accommodation space inside the high-voltage box. In order to improve the working stability of the high-voltage box in electric vehicles and other electrical equipment, a corresponding heat exchange mechanism is usually arranged outside the high-voltage box. For example, the heat exchange mechanism can be a liquid cooling plate, a liquid cooling tube, etc., and the liquid cooling plate or the liquid cooling tube is filled with a heat exchange medium. In this way, the heat exchange mechanism exchanges heat with the heat-generating components in the high-voltage box to maintain the working condition of the high-voltage box with a stable temperature.

[0049] However, setting an independent heat exchange mechanism outside the high-pressure box will increase the heat transfer path between the heat exchange medium and each heat-generating component. The general heat transfer path is as follows: heat-generating component-high-pressure box body-heat exchange mechanism shell-heat exchange medium. In addition, the working environment of the high-pressure box is often accompanied by vibration, which also increases the risk of relative displacement between the external heat exchange mechanism and the high-pressure box. After the relative displacement occurs, the heat exchange capacity between the external heat exchange mechanism and the high-pressure box is greatly reduced.

[0050] Based on the above considerations, in order to improve the heat dissipation efficiency of the high-voltage box, the present application provides a design of a high-voltage box, by setting a heat exchange channel in the shell of the high-voltage box, shortening the heat transfer path between the heat exchange medium in the heat exchange channel and the heating element. At the same time, the built-in heat exchange channel can release more external space of the shell, reduce the parts required for heat dissipation, and also reduce the overall volume of the high-voltage box, and improve the battery energy density.

[0051] The embodiment of the present application provides an electrical device 10000 that uses the battery 3000 of the above-mentioned high-voltage box 100 as a power source. The electrical device 10000 may be, but is not limited to, a mobile phone, a portable device, a laptop computer, an electric vehicle, an electric car, a ship, a spacecraft, an electric toy, and an electric tool, etc. For example, the spacecraft includes an airplane, a rocket, a space shuttle, and a spacecraft, etc. The electric toy includes 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. The electric tool includes a metal cutting electric tool, a grinding electric tool, an assembly electric tool, and a railway electric tool, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator, and an electric planer.

[0052] The battery 3000 described in the embodiment of the present application is not limited to the electrical equipment 10000 described above, but can also be applied to all devices using the battery 3000. However, for the sake of simplicity, the following embodiments are described using electric vehicles as examples.

[0053] For example, see Figure 1, the figure is a schematic diagram of the structure of a vehicle according to an embodiment of the present application. The vehicle may be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 3000, a controller 1000 and a motor 2000 may be arranged inside the vehicle, and the controller 1000 is used to control the battery 3000 to supply power to the motor 2000. For example, a battery 3000 may be arranged at the bottom, front or rear of the vehicle. The battery 3000 may be used to power the vehicle. For example, the battery 3000 may be used as an operating power source for the vehicle, for the circuit system of the vehicle, for example, for the working power requirements during the start-up, navigation and operation of the vehicle. In another embodiment of the present application, the battery 3000 may not only be used as an operating power source for the vehicle, but also as a driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0054] The battery 3000 mentioned in the embodiment of the present application refers to a single physical module including one or more battery cells 3001 to provide higher voltage and capacity. Figure 2 , the battery 3000 may include multiple battery cells 3001. The number of battery cells 3001 and the connection between the battery cells 3001 can be set according to demand to meet different power requirements. Specifically, multiple battery cells 3001 can be connected in series, in parallel, or in mixed connection, and mixed connection refers to a mixture of series and parallel connection so that the battery 3000 has a larger capacity or power. Optionally, multiple battery cells 3001 can be connected in series, in parallel, or in mixed connection to form a battery 3000 module, and multiple battery 3000 modules can be connected in series, in parallel, or in mixed connection to form a battery 3000. In other words, multiple battery cells 3001 can directly form a battery 3000, or they can first form a battery 3000 module, and the battery 3000 modules can then form a battery 3000.

[0055] The battery 3000 also includes a battery case 3002, and the battery case 3002 has a storage space inside, and multiple battery cells 3001 are stored in the storage space. As shown in the figure, the battery case 3002 may include two parts, which are respectively referred to as the first part 30021 and the second part 30022. Please refer to Figure and Figure, which are the first part 30021 of a battery case 3002. The first part 30021 and the second part 30022 can be connected by snapping, bonding, etc. to form a storage space. After the multiple battery cells 3001 are connected in parallel, series, or mixed, they are placed in the box formed by connecting the first part 30021 and the second part 30022. Among them, the shapes of the first part 30021 and the second part 30022 can be determined according to the shape formed by the combination of multiple battery cells 3001.

[0056] The battery box 3002 is used to protect at least one battery cell 3001, so as to reduce the influence of liquid or other foreign matter outside the battery 3000 on the charging or discharging of at least one battery cell 3001. The shape of the battery cell 3001 includes but is not limited to a cylinder, a flat body, a rectangular parallelepiped or other shapes. The packaging methods of the battery cell 3001 include but are not limited to a cylindrical battery cell, a square battery cell and a soft-pack battery cell.

[0057] In addition, the battery 3000 may also include other structures, which are not described one by one here. For example, the battery 3000 may also include a busbar. The busbar is used to achieve electrical connection between multiple battery cells 3001, for example, to achieve parallel or series connection or mixed connection between multiple battery cells 3001. Specifically, the busbar can achieve electrical connection between battery cells 3001 by connecting the electrode terminals of the battery cells 3001. Further, the busbar can be fixedly connected to the electrode terminals of the battery cells 3001 by welding. Optionally, the busbar may include a conductive mechanism, and the electric energy generated by the multiple battery cells 3001 can be further led out through the battery case 3002 through the conductive mechanism.

[0058] According to some embodiments of the present application, referring to Figures 3 to 8 The embodiment of the first aspect of the present application provides a high-voltage box 100. The high-voltage box 100 includes a housing 10 and a heating element 20. The housing 10 has a receiving cavity 10a; the heating element 20 is disposed in the receiving cavity 10a; wherein a heat exchange channel 10b is disposed in the housing 10, and the heat exchange channel 10b is configured to allow a heat exchange medium to flow through to exchange heat with the heating element 20.

[0059] It can be understood that the accommodating cavity 10a of the housing 10 is a space enclosed by the inner wall of the housing 10. The heating element 20 includes but is not limited to a fuse, a relay, a current sensor, a pre-charge resistor, etc. The heat exchange medium is a liquid, a gas, and a gas-liquid mixture with good thermal conductivity. For example, the heat exchange medium is deionized water, a water-ethylene glycol mixed solution, or a mineral heat transfer oil.

[0060] Providing the heat exchange channel 10b in the shell 10 means opening a channel structure that is in communication with the outside in the solid part of the shell 10. For example, the shell 10 is a rectangular parallelepiped shell 10, which includes a top shell and a bottom shell that are relatively arranged, and a side shell that surrounds the top shell and the bottom shell. Then, the heat exchange channel 10b is opened in any one or more of the top shell, the bottom shell and the side shell.

[0061] The heat exchange channel 10b refers to a pipeline structure for connecting the heat exchange medium. It can be understood that the heat exchange channel 10b has an inlet for the heat exchange medium to flow into the channel and an outlet for the heat exchange medium to flow out of the channel, so that the heat exchange medium can flow in the heat exchange channel 10b and transfer the working heat generated by the heating element 20 to the outside.

[0062] The number of heat exchange channels 10b includes but is not limited to one, two, three or more. The number of heat exchange channels 10b can be increased while meeting the structural strength of the shell 10. The heat exchange channels 10b can be arranged in a manner that the heat exchange channels 10b are spaced apart from each other, or the heat exchange channels 10b are staggered, or a part of the heat exchange channels 10b are spaced apart from each other and another part of the heat exchange channels 10b are staggered. Also, the cross-sectional shape of the heat exchange channels 10b includes but is not limited to circular, elliptical, square, etc.

[0063] It should be noted that the heat exchange channel 10b can be formed directly on the shell 10. For example, the heat exchange channel 10b is formed in the shell 10 during or after the manufacturing process of the shell 10; or, the heat exchange channel 10b is first formed on a corresponding structural member, and then the structural member is assembled on the shell 10. For example, the structural member is a water-cooling plate, and the heat exchange channel 10b is formed in the water-cooling plate, and then the water-cooling plate is set on the shell 10.

[0064] Compared with the case where an independent heat exchange mechanism is provided outside the shell 10 of the high-voltage box 100, the high-voltage box 100 provided in the present application has a heat exchange channel 10b provided inside the shell 10, which can shorten the heat transfer path between the heating element 20 and the heat exchange medium, effectively improve the heat dissipation efficiency of the high-voltage box 100, and solve the problem of relative movement between the external heat exchange mechanism and the shell 10 of the high-voltage box 100 due to external force. At the same time, since the heat exchange channel 10b is built into the high-voltage box 100, more space can be released outside the shell 10 of the high-voltage box 100, reducing the components required for heat dissipation, and also reducing the overall volume of the high-voltage box 100, and improving the battery energy density.

[0065] Please refer to Figure 5 In one embodiment, the heating element 20 is fixed on the inner wall of the accommodating cavity 10 a , and the heat exchange channel 10 b corresponds to the heating element 20 .

[0066] It can be understood that the connection method between the heating element 20 and the inner wall of the accommodating chamber 10a can be a direct connection, for example, it is directly installed on the inner wall of the accommodating chamber 10a through fasteners such as screws and pins, and directly abuts against the inner wall of the accommodating chamber 10a. At this time, the working heat generated by the heating element 20 is directly transferred to the shell 10, and heat is exchanged with the heat exchange medium in the heat transfer channel. The heat conduction path of this connection method is shorter; alternatively, the heating element 20 can also be indirectly connected to the inner wall of the accommodating chamber 10a through an installation structure such as a bracket or a support. In this way, the working heat generated by the heating element 20 is transferred to the shell 10 through the installation structure, and then heat is exchanged with the heat exchange medium in the heat transfer channel. The heat conduction path of this connection method is longer.

[0067] The heat exchange channel 10b corresponds to the heating element 20, which can be understood as the location of the heat exchange channel 10b is located at the inner wall portion of the housing 10 directly or indirectly connected to the heating element 20. For example, the housing 10 is a rectangular housing 10, which includes a top shell and a bottom shell that are relatively arranged, and a side shell that surrounds the top shell and the bottom shell, and the heating element 20 is fixed on the inner wall of the bottom shell of the rectangular housing 10, then the heat exchange channel 10b is arranged in the bottom shell; by analogy, if the heating element 20 is fixed on the inner wall of the side shell of the rectangular housing 10, then the heat exchange channel 10b is arranged in the side shell.

[0068] With such arrangement, the actual heat conduction distance of the heating element 20 is shortened, so that the heat can be discharged more quickly.

[0069] Optionally, in a specific embodiment, the shell 10 is a rectangular shell, which includes a top shell and a bottom shell that are relatively arranged, and a side shell that encloses the top shell and the bottom shell, the heating element 20 is fixed on the inner wall of the bottom shell of the rectangular shell, and the heat exchange channel 10b is arranged in the bottom shell, and, in a direction perpendicular to the inner wall of the bottom shell, the projection of the heating element 20 falls into the projection of the heat exchange channel 10b, or the projection of the heating element 20 coincides with the projection of the heat exchange channel 10b, so that the actual heat conduction distance of the heating element 20 is shortened as much as possible to improve the heat dissipation efficiency.

[0070] Please refer to Figure 5 In one embodiment, the high-pressure box 100 further includes a heat exchange member 30 , which is integrally formed with the housing 10 , and has a heat exchange channel 10 b therein.

[0071] It can be understood that the heat exchange channel 10b is formed in the heat exchange member 30, and the heat exchange member 30 is a bearing structure member for realizing heat exchange between the heating element 20 and the heat exchange medium. Specifically, the heat exchange member 30 can be a liquid cooling plate, a liquid cooling pipe, or a combination of the two.

[0072] The shape and structure of the heat exchange element 30 include but are not limited to strip, block or plate. The number of the heat exchange element 30 can be one, two or more, and they are distributed in the housing 10 according to actual use requirements.

[0073] The material of the heat exchanger 30 and the material of the shell 10 can be the same. After the heat exchanger 30 is manufactured, it is connected to the shell 10 by injection molding to form an integral body. Alternatively, the heat exchanger 30 and the shell 10 are injection molded together. Of course, the material of the heat exchanger 30 can also be different from that of the shell 10. The speed of heat transmission can also be adjusted by utilizing the difference in thermal conductivity between different materials. For example, when the heat exchanger 30 is made of metal and the shell 10 is made of plastic, the heat generated by the working heat of the heating element 20 is conducted at the heat exchanger 30 with a higher efficiency than at the shell 10.

[0074] Optionally, in a specific embodiment, the heat exchanger 30 is integrally formed with the housing 10 by an injection molding process. It can be understood that after the heat exchanger 30 is manufactured, it is integrally formed with the housing 10 by an injection molding process. Alternatively, the heat exchanger 30 is injection molded together with the housing 10.

[0075] In one embodiment, at least a portion of the heat exchange element 30 extends into the accommodating cavity 10a.

[0076] Here, taking the wall thickness of the shell 10 as a standard, there are at least three position forms between the heat exchanger 30 and the shell 10: one is that it is completely inside the shell 10. At this time, the maximum thickness of any two points of the heat exchanger 30 is less than the wall thickness of the shell 10; the second is that it is located inside the shell 10 and exposed to the outside of the shell 10. At this time, there is an overlapping portion between the heat exchanger 30 and the shell 10; the third is that it is located inside the shell 10 and extends into the accommodating cavity 10a of the shell 10. Similarly, there is an overlapping portion between the heat exchanger 30 and the shell 10.

[0077] Therefore, at least part of the heat exchange element 30 extends into the accommodating chamber 10a, which means that in space, part of the heat exchange element 30 is located in the accommodating chamber 10a, and the other part overlaps with the shell 10. From the perspective of appearance, at least part of the heat exchange element 30 protrudes from the inner wall of the accommodating chamber 10a.

[0078] With such arrangement, when designing the installation position of the heating element 20 in the accommodating cavity 10 a of the housing 10 , the heating element 20 can directly abut against the heat exchange element 30 , further shortening the physical distance of heat conduction.

[0079] For example, in the early stage of manufacturing the shell 10 , the required location of the heat exchanger 30 is determined, and after being integrally formed with the shell 10 , the heat exchanger 30 directly extends into the accommodating cavity 10 a .

[0080] Alternatively, after the shell 10 is manufactured, the actual arrangement of the heat exchanger 30 in the shell 10 is determined, and a hole is opened in the inner wall of the shell 10, that is, the heat exchanger 30 is exposed to the accommodating cavity 10a by performing secondary processing on the inner wall of the shell 10.

[0081] Please refer to Figure 6 In one embodiment, the shell 10 is provided with an opening structure 10c for the heat exchange element 30 to extend into the accommodating cavity 10a.

[0082] It can be understood that the opening structure 10c is a blind hole or a through hole formed on the inner wall of the shell 10, and the heat exchanger 30 is exposed in the accommodating cavity 10a through the opening structure 10c such as the blind hole or the through hole. Here, the hole profile of the opening structure 10c can be adapted to the outer profile of the heat exchanger 30, so that the heat exchanger 30 can be partially or completely exposed to meet the position setting requirements of the heat exchanger 30 directly contacting the heating element; or, the hole profile of the opening structure 10c can also be adapted to the outer profile of the projection of the heating element 20 on the inner wall of the shell 10, so as to maximize the contact area between the heating element 20 and the heat exchanger 30.

[0083] With such arrangement, the heat exchange component 30 can be exposed in the accommodating cavity 10a, so as to meet the requirement of direct contact with the heating element 20. Meanwhile, the hole profile of the open hole structure 10c can also be adapted to the profile of the heating element 20, so as to play a certain role in limiting or positioning the heating element 20.

[0084] In one embodiment, the heating element 20 contacts at least a portion of the heat exchange member 30 .

[0085] It can be understood that the contact between the heating element 20 and the heat exchanger 30 mentioned here refers to direct contact between the two. At this time, the heat transfer path of the heating element 20 is: heating element 20-heat exchanger 30. In this way, the conduction time of the working heat generated on the shell 10 is omitted, and the heat dissipation efficiency of the heating element 20 is further improved.

[0086] Furthermore, the exposed area of ​​the heating element 20 for heat transfer is certain, and there is at least the same exposed area on the heat exchanger 30 to match it. Therefore, the degree of contact between the heating element 20 and the heat exchanger 30 can be explained by the degree of overlap of the exposed areas of the two.

[0087] Please refer to Figure 3 , Figure 4 and Figure 8 In one embodiment, the high-voltage box 100 further includes a heat conductive member 40 , which is disposed on the inner wall side of the heating element 20 facing the accommodating cavity 10 a , and the heating element 20 exchanges heat with the heat exchange channel 10 b through the heat conductive member 40 .

[0088] It can be understood that the side of the heating element 20 facing the inner wall of the accommodating cavity 10a is not a flat contact surface, which makes the contact area between the heating element 20 and the inner wall of the shell 10 or the heat exchanger 30 relatively small. Therefore, the function of the heat conductor 40 is to further increase the contact area between the heating element 20 and the inner wall of the shell 10 or the heat exchanger 30, thereby improving the heat dissipation efficiency.

[0089] The heat conducting member 40 may have a certain degree of flexibility so that it can better fit the outer wall of the heating element 20 , and the heat conducting member 40 can also better fit the outer wall of the housing 10 or the heat exchange member 30 .

[0090] The shape of the heat conductive element 40 includes but is not limited to a block, a sheet, a strip, etc. The material of the heat conductive element 40 can be heat conductive silica gel, heat conductive resin, heat conductive rubber, etc.

[0091] In a specific embodiment, the heat conductor 40 is located between the inner wall of the shell 10 and the outer wall of the heating element 20, and is used to fill the gap between the heating element 20 and the shell 10. At this time, the heat transfer path between the heating element 20 and the heat exchange medium is: heating element 20-heat conductor 40-shell 10-heat exchange medium; or, heating element 20-heat conductor 40-shell 10-heat exchange element 30-heat exchange medium.

[0092] In another specific embodiment, an opening structure 10c is provided on the inner wall of the housing 10, the heat exchanger 30 extends into the accommodating cavity 10a through the opening structure 10c, and the heat conducting member 40 is disposed at the opening structure 10c. At this time, the heat transfer path between the heating element 20 and the heat exchange medium is: heating element 20-heat conducting member 40-heat exchanger 30-heat exchange medium.

[0093] Please refer to Figure 3 and Figure 4 In one embodiment, the heating element 20 includes a relay 21 and a bar 22 connected to the relay 21 , and the heat conductive member 40 includes a thermal pad 41 , and the bar 22 performs heat exchange with the heat exchange channel 10 b through the thermal pad 41 .

[0094] Here, the relay 21 is the main working heat-generating element, and the bar 22 is used to connect with the relay 21 to realize an electrical connection between the relay 21 and other elements. At the same time, the bar 22 can also serve as a heat conduction structural component of the relay 21, that is, the heat transfer path between the relay 21 and the heat exchange medium is: relay 21-bar 22-thermal pad 41-housing 10-heat exchange medium; or, relay 21-bar 22-thermal pad 41-housing 10-heat exchange element 30-heat exchange medium; or, relay 21-bar 22-thermal pad 41-heat exchange element 30-heat exchange medium.

[0095] Please refer to Figure 8In one embodiment, the heating element 20 includes a diverter 23, the heat conducting member 40 includes a stacked heat conducting block 42 and a heat conducting pad 41, the diverter 23 is connected to the heat conducting block 42, and the diverter 23 performs heat exchange with the heat exchange channel 10b through the heat conducting block 42 and the heat conducting pad 41.

[0096] Similarly, the diverter 23 can also generate heat during operation, and its location is far away from the inner wall of the shell 10, so it is necessary to add a heat conduction block 42 to meet its heat exchange requirements. Specifically, the heat transfer path between the diverter 23 and the heat exchange medium is: diverter 23-heat conduction block 42-heat conduction pad 41-shell 10-heat exchange medium; or, diverter 23-heat conduction block 42-heat conduction pad 41-shell 10-heat exchange element 30-heat exchange medium; or, diverter 23-heat conduction block 42-heat conduction pad 41-heat exchange element 30-heat exchange medium.

[0097] Please refer to Figure 7 In one embodiment, the heat exchange element 30 is provided with a positioning structure 50 which is adaptively connected to the shell 10 .

[0098] It can be understood that a heat exchange channel 10b is formed in the heat exchange element 30. In order to realize the circulation of the heat exchange medium in the heat exchange channel 10b, the heat exchange element 30 should also have an input end and an output end connected to the external cooling circulation device, that is, the heat exchange medium flows into the heat exchange channel 10b from the input end, and then is discharged back to the external cooling circulation device from the output end. The external force can be transmitted to the heat exchange element 30 through the input end and the output end, and finally causes the relative movement between the heat exchange element 30 and the shell 10. Therefore, the positioning structure 50 is used to improve the connection stability between the heat exchange element 30 and the shell 10.

[0099] The process of integrally forming the heat exchanger 30 and the shell 10 can be as follows: first, the heat exchanger 30 is preformed into a finished product, and then placed in a mold, and the heat exchanger 30 is formed in the shell 10 by injection molding. Therefore, the positioning structure 50 formed on the heat exchanger 30 increases the action point and contact area between the heat exchanger 30 and the shell 10, thereby improving the connection stability between the heat exchanger 30 and the shell 10.

[0100] For example, the positioning structure 50 can be a protruding structure such as a boss, a rib, and a bump formed on the surface of the heat exchanger 30, and an action point is formed between the protruding structure and the shell 10, thereby effectively reducing the relative movement of the heat exchanger 30 and the shell 10 caused by external force.

[0101] For example, the positioning structure 50 can also be a recessed structure such as a groove, a pit, and an opening formed on the surface of the heat exchanger 30. When the heat exchanger 30 is integrally formed in the shell 10 by injection molding, the shell 10 material that is in a fluid state at the initial stage of molding is filled in the recessed structure, and after cooling and solidification, an action point is formed between the shell 10 and the inner wall of the recessed structure of the heat exchanger 30, thereby effectively reducing the relative movement of the heat exchanger 30 with the shell 10 caused by external force.

[0102] Of course, in other examples, the positioning structure 50 may also include a protruding structure and a recessed structure.

[0103] In one embodiment, the positioning structure 50 includes a protrusion protruding from the heat exchange element 30 .

[0104] It can be understood that the convex portion is a positioning structure 50 formed by the heat exchange element 30 protruding outward. Specifically, the convex portion includes but is not limited to a convex column, a convex rib, and a convex point.

[0105] An action point may be formed between the protrusion and the shell 10 , thereby effectively reducing the relative movement of the heat exchange element 30 and the shell 10 caused by external force pulling.

[0106] Alternatively, the positioning structure 50 includes a recessed portion formed on the heat exchange element 30 .

[0107] It can be understood that the recessed portion is a positioning structure 50 formed by a depression on the surface of the heat exchanger 30 . Specifically, the recessed portion includes but is not limited to a groove, a pit, and an opening.

[0108] Similarly, an action point may be formed between the recess and the shell 10 , thereby effectively reducing the relative movement of the heat exchange element 30 and the shell 10 caused by external force.

[0109] Alternatively, the positioning structure 50 includes a convex portion convexly provided on the heat exchange element 30 , and a concave portion concavely formed on the heat exchange element 30 .

[0110] Here, the convex portion and the concave portion may be formed on the heat exchange element 30 at the same time. Similarly, the convex portion and the concave portion may be used to simultaneously form an action point with the housing 10 .

[0111] Please refer to Figure 7 In a specific embodiment, the protrusion includes a cylindrical boss 51 provided on the heat exchange element 30 .

[0112] It can be understood that the cylindrical boss 51 can be formed on the surface of the heat exchanger 30 by stamping, milling, etc. The number of the cylindrical boss 51 can be one, two or more, and can be arranged at various places on the surface of the heat exchanger 30 according to actual use requirements.

[0113] The processing and forming method of the cylindrical boss 51 is relatively simple, and can meet the requirement of being quickly formed on the surface of the heat exchange element 30 .

[0114] In another embodiment, the recess includes a circular hole 52 opened on the heat exchange element 30 .

[0115] It can be understood that the circular hole 52 can be formed on the heat exchanger 30 by punching, milling, etc. The number of the circular hole 52 can be one, two or more, and can be arranged at various places on the surface of the heat exchanger 30 according to actual use requirements.

[0116] The processing and forming method of the circular hole 52 is relatively simple, and can meet the requirement of being quickly formed on the heat exchange element 30 .

[0117] And, in other embodiments, the convex portion includes a cylindrical boss 51 provided on the heat exchanger 30; and the concave portion includes a circular hole 52 opened on the heat exchanger 30. That is, the cylindrical boss 51 and the circular hole 52 are formed on the heat exchanger 30 at the same time.

[0118] Please refer to Fig. 9 In one embodiment, the heat exchange element 30 includes at least two relatively independently arranged heat exchange plates 31, and at least part of the heat exchange plates 31 extends into the accommodating cavity 10a.

[0119] It can be understood that, according to the actual installation situation, the heating element 20 does not occupy all the space in the accommodating cavity 10a. Therefore, the heating element 20 is only connected to part of the inner wall of the shell 10. In order to improve the heat dissipation efficiency of the heating elements 20 in different areas, the heat exchanger 30 is composed of relatively independently arranged heat exchange plates 31. Here, relatively independent arrangement means that the arrangement position of each heat exchange plate 31 is relatively independent, and the heat exchange medium between different heat exchange plates 31 flows relatively independently without interfering with each other.

[0120] At the same time, in order to shorten the physical distance of heat transfer of the heating element 20, the heat exchange plate 31 can be extended into the accommodating chamber 10a. Here, the extension of part of the heat exchange plate 31 into the accommodating chamber 10a can refer to one or more of the multiple heat exchange plates 31 extending into the accommodating chamber 10a, or can refer to a part of a heat exchange plate 31 extending into the accommodating chamber 10a.

[0121] With such arrangement, each heat exchange plate 31 can independently dissipate heat for the corresponding heating element 20 . Especially when there is a difference in the working heat generation of each heating element 20 , the heat dissipation effect of the relatively independently arranged heat exchange plate 31 is better.

[0122] In a second aspect, an embodiment of the present application further provides a battery 3000 , comprising the above-mentioned high-voltage box 100 .

[0123] The battery 3000 provided in the present application has the technology of the above-mentioned high-voltage box 100, and the internal space of the battery 3000 is more efficiently utilized and the working process is more stable.

[0124] In a third aspect, an embodiment of the present application further provides an electrical device 10000 , comprising the above-mentioned battery 3000 .

[0125] The electric device 10000 provided in the present application, based on the battery 3000, has higher working stability.

[0126] Please refer to Figures 3 to 9 , the following is a specific embodiment of the present application;

[0127] The high-pressure box 100 includes a housing 10, a heating element 20 and a heat exchanger 30. The housing 10 has a receiving cavity 10a; the heating element 20 is disposed in the receiving cavity 10a; wherein the heat exchanger 30 has a heat exchange channel 10b, the heat exchange channel 10b is configured for heat exchange medium to flow through to exchange heat with the heating element 20, and the heat exchanger 30 is integrally formed with the housing 10.

[0128] The heating element 20 is fixed on the inner wall of the accommodating cavity 10a, and the heat exchange channel 10b of the heat exchange member 30 corresponds to the heating element 20. In this way, the actual heat conduction distance of the heating element 20 is shortened, so that the heat can be discharged more quickly.

[0129] At least part of the heat exchanger 30 extends into the accommodating cavity 10a. Thus, when designing the installation position of the heating element 20 in the accommodating cavity 10a of the housing 10, the heating element 20 can directly abut against the heat exchanger 30, further shortening the physical distance of heat conduction.

[0130] Specifically, the housing 10 is provided with an opening structure 10c for the heat exchange element 30 to extend into the accommodating cavity 10a. In this way, the heat exchange element 30 can be exposed in the accommodating cavity 10a, so that it can be in direct contact with the heating element 20. At the same time, the hole profile of the opening structure 10c can also be adapted to the profile of the heating element 20, so that the heating element 20 can be limited or positioned to a certain extent.

[0131] The heating element 20 is in contact with at least part of the heat exchanger 30. In this way, the conduction time of the working heat generated on the housing 10 is saved, and the heat dissipation efficiency of the heating element 20 is further improved. In addition, the exposed area of ​​the heating element 20 for heat transfer is certain, and there is at least the same exposed area on the heat exchanger 30 to match it. Therefore, the degree of contact between the heating element 20 and the heat exchanger 30 can be explained by the degree of overlap of the exposed areas of the two.

[0132] At the same time, a heat conducting member 40 is disposed on the inner wall side of the heating element 20 facing the accommodating cavity 10a, and the heating element 20 exchanges heat with the heat exchange channel 10b through the heat conducting member 40. The heat conducting member 40 can further increase the contact area between the heating element 20 and the inner wall of the housing 10 or the heat exchange member 30, thereby improving the heat dissipation efficiency.

[0133] The heating element 20 includes a relay 21 and a bar 22 connected to the relay 21, the heat conducting member 40 includes a heat conducting pad 41, and the bar 22 performs heat exchange with the heat exchange channel 10b through the heat conducting pad 41. Alternatively, the heating element 20 includes a shunt 23, the heat conducting member 40 includes a heat conducting block 42 and a heat conducting pad 41 arranged in a stacked manner, the shunt 23 is connected to the heat conducting block 42, and the shunt 23 performs heat exchange with the heat exchange channel 10b through the heat conducting block 42 and the heat conducting pad 41.

[0134] The heat exchanger 30 is provided with a positioning structure 50 that is adapted to be connected with the housing 10. The positioning structure 50 is a cylindrical boss 51 provided on the heat exchanger 30; and / or a circular hole 52 opened on the heat exchanger 30. Here, the cylindrical boss 51 and the circular hole 52 can increase the action point and contact area between the heat exchanger 30 and the housing 10, thereby improving the connection stability between the heat exchanger 30 and the housing 10.

[0135] Furthermore, the heat exchanger 30 includes at least two relatively independently arranged heat exchange plates 31, and at least part of the heat exchange plates 31 extends into the accommodating cavity 10a. In this way, each heat exchange plate 31 can independently dissipate heat for the corresponding heating element 20, especially when there is a difference in the working heat generation of each heating element 20, the heat dissipation effect of the relatively independently arranged heat exchange plates 31 is better.

[0136] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high voltage box, characterized in that: include: A housing having a receiving cavity; A heating element, the heating element is arranged in the accommodating cavity; Wherein, a heat exchange channel is provided in the shell, and the heat exchange channel is configured for heat exchange medium to flow through so as to perform heat exchange with the heating element.

2. The high voltage box according to claim 1, characterized in that: The heating element is fixed on the inner wall of the accommodating cavity, and the heat exchange channel corresponds to the heating element.

3. The high voltage box according to claim 1 or 2, characterized in that: The high-pressure box further comprises a heat exchange member, the heat exchange member is integrally formed with the shell, and the heat exchange channel is provided in the heat exchange member.

4. The high voltage box according to claim 3, characterized in that: The heat exchange element is integrally formed with the shell through an injection molding process.

5. The high voltage box according to claim 3, characterized in that: At least a portion of the heat exchange element extends into the accommodating cavity.

6. The high voltage box according to claim 5, characterized in that: The shell is provided with an opening structure for the heat exchange element to extend into the accommodating cavity.

7. The high voltage box according to claim 5 or 6, characterized in that: The heating element contacts at least a portion of the heat exchange member.

8. The high voltage box according to any one of claims 3 to 7, characterized in that: The heat exchange component includes at least two relatively independently arranged heat exchange plates, and at least part of the heat exchange plates extends into the accommodating cavity.

9. The high voltage box according to any one of claims 3 to 8, characterized in that: The heat exchange element is provided with a positioning structure which is adaptively connected with the shell.

10. The high voltage box according to claim 9, characterized in that: The positioning structure includes a convex portion convexly arranged on the heat exchange element; Alternatively, the positioning structure comprises a recessed portion formed on the heat exchange element; Alternatively, the positioning structure includes a convex portion convexly provided on the heat exchange member, and a concave portion concavely formed on the heat exchange member.

11. The high voltage box according to claim 10, characterized in that: The convex portion includes a cylindrical boss provided on the heat exchange element; and / or the concave portion includes a circular hole opened on the heat exchange element.

12. The high voltage box according to any one of claims 1 to 11, characterized in that: The high-pressure box further comprises a heat-conducting member, which is arranged on a side of the inner wall of the heating element facing the accommodating cavity, and the heating element exchanges heat with the heat exchange channel through the heat-conducting member.

13. The high voltage box according to claim 12, characterized in that: The heating element includes a relay and a bar connected to the relay, the heat conductive member includes a thermal pad, and the bar exchanges heat with the heat exchange channel through the thermal pad.

14. The high voltage box according to claim 12, characterized in that: The heating element includes a diverter, the heat conducting member includes a stacked heat conducting block and a heat conducting pad, the diverter is connected to the heat conducting block, and the diverter performs heat exchange with the heat exchange channel through the heat conducting block and the heat conducting pad.

15. A battery, characterized in that: Comprising a high voltage box as claimed in any one of claims 1 to 14.

16. An electrical equipment, characterized in that: Comprising the battery of claim 15.

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