High voltage box cooling structure, battery box, battery and electrical device

Abstract

The present application discloses a cooling structure of a high-voltage box, a battery box, a battery and an electrical device. The cooling structure of the high-voltage box includes a cooling part and a mounting beam, the cooling part is used to cool the high-voltage box; the mounting beam is used to fix the high-voltage box, the mounting beam is arranged on the cooling part, and the mounting beam and the cooling part are an integrally formed structure. The high-voltage box is fixed and installed by the mounting beam. Since the mounting beam and the cooling part are integrally formed, the assembly of the mounting beam and the cooling part can be omitted, the structure is simplified, and the production efficiency of the battery is improved.

Description

Technical Field

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

[0002] Battery cells are widely used in electronic devices, such as mobile phones, laptop computers, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and electric tools, etc. Battery cells can include nickel-cadmium battery cells, nickel-hydrogen battery cells, lithium-ion battery cells, and secondary alkaline zinc-manganese battery cells, etc.

[0003] The high-voltage box is a key component of the battery, used to provide protection and isolation for the high-voltage battery pack to ensure that it operates under safe conditions. Currently, the structural connection method used to install and cool the high-voltage box is relatively complicated, which reduces the production efficiency of the battery. Utility Model Content

[0004] The embodiments of the present application provide a cooling structure of a high-voltage box, a battery box, a battery and an electrical device, which can improve the production efficiency of the battery.

[0005] In the first aspect, an embodiment of the present application provides a cooling structure of a high-voltage box, the cooling structure of the high-voltage box includes a cooling part and a mounting beam, the cooling part is used to cool the high-voltage box; the mounting beam is used to fix the high-voltage box, the mounting beam is arranged on the cooling part, and the mounting beam and the cooling part are an integrally formed structure.

[0006] In the above scheme, the cooling part is used to dissipate heat for the high-voltage box to prevent the high-voltage box from being damaged due to excessive temperature. The high-voltage box is fixed and installed by the mounting beam. Since the mounting beam and the cooling part are integrally formed, the assembly of the mounting beam and the cooling part can be omitted, which simplifies the structure and improves the production efficiency of the battery.

[0007] In some embodiments, a liquid inlet pipe and a liquid outlet pipe are provided on the cooling part, and a plurality of cooling channels are formed inside the cooling part. The cooling channels are respectively connected to the liquid inlet pipe and the liquid outlet pipe, and the cooling channels are used for circulating heat exchange medium.

[0008] The heat exchange medium is circulated through the liquid inlet pipe and the liquid outlet pipe, and the heat exchange medium in the cooling channel can dissipate heat to the high-pressure box. The embodiment of the present application has high heat dissipation efficiency and occupies little space, thereby improving the energy density of the battery.

[0009] In some embodiments, the cooling structure further includes a sealing portion, which is disposed at an end of the cooling channel and is used to seal the cooling channel.

[0010] In the above solution, the cooling channel is sealed by the sealing portion, so that the sealing performance of the cooling structure can be improved.

[0011] In some embodiments, the number of mounting beams is two, and the two mounting beams are spaced apart from each other.

[0012] By fixing the high-voltage box to the two mounting beams respectively, the stability of the high-voltage box can be improved.

[0013] In some embodiments, the cooling structure further includes a fastener, and the fastener is used to fix the high-voltage box to the mounting beam, and the mounting beam is provided with a fixing hole for the fastener to pass through.

[0014] In the above solution, the mounting beam is fixed to the mounting beam by passing the fastener through the fixing hole, and the fixing method is simple and low in cost.

[0015] In some embodiments, two ends of the mounting beam along a first direction are protruding relative to the cooling portion, and the first direction is a width direction of the cooling portion.

[0016] In the above scheme, by arranging the end of the mounting beam along the first direction to protrude relative to the cooling part, it is convenient to overlap and fix the end of the mounting beam on the crossbeam, expansion beam and other structures of the box body, which can improve the assembly efficiency of the cooling structure.

[0017] In some embodiments, the cooling structure further includes an anti-expansion beam, which is disposed on the cooling portion and is configured to contact the expansion beam of the battery box.

[0018] In the above solution, the anti-expansion beam is used to support the expansion beam of the battery box, thereby reducing the expansion degree of the battery cell.

[0019] In some embodiments, the mounting beam, the cooling portion and the anti-expansion beam are an integrated structure. By integrating the mounting beam, the cooling portion and the anti-expansion beam, the integration of the cooling structure is further improved, thereby further improving the production efficiency of the battery.

[0020] In some embodiments, two ends of the anti-expansion beam along a first direction are protruding relative to the cooling portion, and the first direction is the width direction of the cooling portion.

[0021] In the above scheme, by arranging the end of the anti-expansion beam along the first direction to protrude relative to the cooling part, it is convenient to overlap and fix the end of the anti-expansion beam on the crossbeam, expansion beam and other structures of the box body, which can improve the assembly efficiency of the cooling structure.

[0022] In some embodiments, a dimension of the anti-expansion beam along a second direction is greater than a dimension of the mounting beam along the second direction, and the second direction is a thickness direction of the cooling portion.

[0023] In the above solution, by setting the height of the anti-expansion beam to be greater than the height of the mounting beam, the supporting strength of the anti-expansion beam on the expansion beam can be improved.

[0024] In a second aspect, an embodiment of the present application further provides a battery box, comprising a box body and a cooling structure of any of the above-mentioned embodiments, wherein the cooling structure is arranged inside the box body.

[0025] In a third aspect, an embodiment of the present application further provides a battery, comprising a battery cell, a high-voltage box, and a battery box of any of the above-mentioned embodiments, wherein the battery cell is arranged inside the battery box, and the high-voltage box is fixed to a mounting beam.

[0026] In some embodiments, the high-voltage box includes a shell and electrical components, the shell includes a base and a cover, the base and the cover are connected to each other to enclose a cavity, the base is fixed to the mounting beam; the electrical components are located in the cavity.

[0027] In the above solution, through the connection between the base and the cover, the electrical components can be placed in the cavity formed by the base and the cover, which is convenient for installation and maintenance.

[0028] In some embodiments, the base is detachably connected to the mounting beam and the expansion beam of the battery box respectively.

[0029] In the above scheme, the base is connected to the mounting beam and the expansion beam respectively, so that the connection stability between the high-voltage box and the battery box can be improved, and the detachable connection is easy to maintain.

[0030] In some embodiments, a through hole is formed at the bottom of the high voltage box to expose at least a portion of the electrical components, and the electrical components exposed through the through hole are in contact with the cooling structure.

[0031] In the above scheme, by opening a through hole at the bottom of the high-voltage box, at least part of the electrical components are exposed, so that the electrical components can directly contact the cooling structure, and the heat generated by the electrical components can be directly transferred to the cooling structure, thereby improving the heat dissipation efficiency of the high-voltage box.

[0032] In some embodiments, a thermally conductive adhesive layer is disposed at the bottom of the high voltage box, and the thermally conductive adhesive layer is bonded to the cooling structure.

[0033] In the above solution, by providing a thermally conductive adhesive layer at the bottom of the high-voltage box, the heat transfer of the high-voltage box can be accelerated and the heat dissipation efficiency of the high-voltage box can be improved.

[0034] In some embodiments, a thermal conductive adhesive layer is provided on a side of the cooling structure that is in contact with the high-voltage box.

[0035] In the above solution, by providing a thermally conductive adhesive layer on the cooling structure, the heat transfer of the high-voltage box can be accelerated and the heat dissipation efficiency of the high-voltage box can be improved.

[0036] In a fourth aspect, an embodiment of the present application provides an electrical device, comprising the above-mentioned battery, and the battery is used to provide electrical energy.

[0037] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 A schematic diagram of a vehicle according to some embodiments of the present application;

[0040] Figure 2 A schematic diagram of the structure of a battery in some embodiments of the present application;

[0041] Figure 3 A schematic diagram of the structure of a battery module according to some embodiments of the present application;

[0042] Figure 4 A schematic diagram of the cooling structure of some embodiments of the present application;

[0043] Figure 5 This is a schematic diagram of the assembly of the high-voltage box and the cooling structure of some embodiments of the present application;

[0044] Figure 6 An exploded schematic diagram of a cooling structure according to some embodiments of the present application;

[0045] Figure 7 This is a schematic diagram of the assembly of the box and the cooling structure of some embodiments of the present application;

[0046] Figure 8 for Figure 7 A partial schematic diagram of

[0047] Fig. 9 A schematic cross-sectional view of a cooling structure of some embodiments of the present application;

[0048] Fig.10 This is a schematic diagram of the assembly of the high voltage box and the battery box body in some embodiments of the present application;

[0049] Fig.11 for Fig.10 A magnified schematic diagram of part A;

[0050] Fig.12 This is a schematic diagram of the structure of a high-voltage box according to some embodiments of the present application;

[0051] Fig.13 Partial schematic diagram of cooling structure of other embodiments of the present application.

[0052] The figures are as follows:

[0053] 1000, vehicle; 100, battery; 200, controller; 300, motor; 10, upper cover; 20, battery cell; 30, box; 400, high-voltage box; 41, shell; 411, base; 412, cover; 413, installation part; 414, via; 42, electrical component; 421, relay; 422, fuse; 43, thermal conductive adhesive layer; 500, cooling structure; 51, cooling part; 511, liquid inlet pipe; 512, liquid outlet pipe; 513, cooling channel; 514, partition rib; 52, mounting beam; 521, fixing hole; 53, sealing part; 54, mounting area; 56, anti-expansion beam 62; X, first direction; Y, second direction; Z, third direction; 61, high-voltage box 400 compartment; 62, expansion beam; 63, side beam. DETAILED DESCRIPTION

[0054] The following detailed description and drawings of the embodiments of the present application are used to illustrate the principles of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0055] In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inside", "outside", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present 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 the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly vertical, but is within the allowable error range. "Parallel" is not strictly parallel, but is within the allowable error range.

[0056] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0057] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0058] In the present application, battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries or magnesium-ion batteries, etc., and the embodiments of the present application do not limit this. Battery cells may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, and the embodiments of the present application do not limit this.

[0059] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack. The battery generally includes a box for encapsulating one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0060] The battery cell includes an electrode assembly and an electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode current collector. The current collector not coated with the positive electrode active material layer protrudes from the current collector coated with the positive electrode active material layer. The current collector not coated with the positive electrode active material layer is stacked as a positive electrode tab. Taking lithium-ion batteries as an example, the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The current collector not coated with the negative electrode active material layer protrudes from the current collector coated with the negative electrode active material layer. The current collector not coated with the negative electrode active material layer is stacked as a negative electrode tab. The material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon. The material of the isolation film may be PP (polypropylene) or PE (polyethylene), etc. In addition, the electrode assembly may be a winding structure or a stacked structure, but the embodiments of the present application are not limited thereto.

[0061] The battery cells disclosed in the embodiments of the present application can be used in, but not limited to, electrical devices such as vehicles, ships or aircraft. A power supply system comprising the battery cells and batteries disclosed in the present application can be used to form the electrical device, which is beneficial to improving the stability of battery performance and battery life.

[0062] The embodiment of the present application provides an electric device using a battery as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. The electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc. The spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0063] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0064] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle 1000 provided for some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000, and the battery 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery 100 may be used to power the vehicle 1000, for example, the battery 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0065] In some embodiments of the present application, the battery 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0066] Please refer to Figure 2 , Figure 2An exploded view of a battery 100 provided in some embodiments of the present application. The battery 100 includes a battery box and a battery cell 20. In some embodiments, the battery box may include an upper cover 10 and a box body 30, the upper cover 10 and the box body 30 cover each other, and the upper cover 10 and the box body 30 jointly define a storage space for accommodating the battery cell 20. The box body 30 may be a hollow structure with one end open, and the upper cover 10 may be a plate-like structure, and the upper cover 10 covers the open side of the box body 30, so that the upper cover 10 and the box body 30 jointly define a storage space; the upper cover 10 and the box body 30 may also be hollow structures with one side open, and the open side of the upper cover 10 covers the open side of the box body 30. Of course, the box body formed by the upper cover 10 and the box body 30 may be in a variety of shapes, such as a cylinder, a cuboid, etc.

[0067] Figure 3 This is a schematic diagram of the structure of the battery module of some embodiments of the present application. In the battery 100, there can be multiple battery cells 20, and the multiple battery cells 20 can be connected in series, in parallel, or in mixed connection. Mixed connection means that the multiple battery cells 20 are both connected in series and in parallel. The multiple battery cells 20 can be directly connected in series, in parallel, or in mixed connection, and then the whole formed by the multiple battery cells 20 is accommodated in the box; of course, the battery 100 can also be a battery module formed by connecting multiple battery cells 20 in series, in parallel, or in mixed connection, and the multiple battery modules are then connected in series, in parallel, or in mixed connection to form a whole, and accommodated in the box. The battery 100 may also include other structures. For example, the battery 100 may also include a busbar component for realizing electrical connection between the multiple battery cells 20.

[0068] Each battery cell 20 can be a secondary battery or a primary battery, or a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 20 can be cylindrical, flat, rectangular, or in other shapes.

[0069] In order to ensure that the battery is connected to the vehicle's electrical equipment, a high-voltage box is usually provided to achieve the connection between the battery and the vehicle's electrical equipment. The high-voltage box usually contains relays, electronic components and other circuit components, which will generate a certain degree of heat when working. If there are not enough heat dissipation measures, these components may overheat, affecting their performance and life. Generally, a cooling structure is provided in the battery box to cool the high-voltage box, and the high-voltage box needs to be fixed to the battery box through the mounting structure. The cooling structure and the mounting structure are separate designs, and the cooling structure needs to be fixedly connected to the mounting structure, which increases the complexity of the structure and the assembly steps, and reduces the production efficiency of the battery.

[0070] In view of this, the present application provides a technical solution, in which the cooling structure of the high-voltage box includes a cooling part and a mounting beam, the cooling part is used to cool the high-voltage box; the mounting beam is used to fix the high-voltage box, the mounting beam is arranged on the cooling part, and the mounting beam and the cooling part are an integrally formed structure. In the above scheme, the high-voltage box is cooled by the cooling part to prevent the high-voltage box from being damaged due to excessive temperature. The high-voltage box is fixedly installed by the mounting beam. Since the mounting beam and the cooling part are integrally formed, the assembly of the mounting beam and the cooling part can be omitted, which simplifies the structure and improves the production efficiency of the battery.

[0071] Figure 4 A schematic diagram of the cooling structure of some embodiments of the present application; Figure 5 This is a schematic diagram of the assembly of the high-voltage box and the cooling structure of some embodiments of the present application.

[0072] Please refer to Figure 4 and Figure 5 In the first aspect, an embodiment of the present application provides a cooling structure 500 of a high-voltage box 400, including a cooling portion 51 and a mounting beam 52, wherein the cooling portion 51 is used to cool the high-voltage box 400; the mounting beam 52 is used to fix the high-voltage box 400, the mounting beam 52 is arranged on the cooling portion 51, and the mounting beam 52 and the cooling portion are an integrally formed structure.

[0073] The cooling unit 51 may be a liquid cooling system, which absorbs and removes heat by circulating coolant to provide a more efficient cooling effect. The cooling unit 51 may also be a radiator, which can effectively transfer heat from the high-voltage box 400 to the surrounding environment by increasing the surface area. Alternatively, the cooling unit 51 may also be a fan and an air duct, where the fan can accelerate the dissipation of heat by forcing air flow, and the air duct helps guide the air flow to the part that needs cooling.

[0074] The high-voltage box 400 can be fixed to the mounting beam 52 by means of bolts, clips, pins, etc. The high-voltage box 400 can be in direct contact with the cooling part 51, or separated by a certain gap distance. The mounting beam 52 and the cooling part 51 are prepared by an integrated molding process, and the mounting beam 52 and the cooling part 51 are integrated into one. Among them, integrated molding refers to integrating parts of different functions or components together to form an integral structure. Exemplarily, the cooling structure 500 is formed by integral extrusion of a profile, in which a heat-softened metal or plastic is squeezed through a special mold by an extruder to form a continuous profile with a specific cross-section and shape.

[0075] In the above scheme, the cooling unit 51 is used to dissipate heat for the high-voltage box 400 to prevent the high-voltage box 400 from being damaged due to excessive temperature. The high-voltage box 400 is fixedly installed by the mounting beam 52. Since the mounting beam 52 and the cooling unit 51 are integrally formed, the assembly of the mounting beam 52 and the cooling unit 51 can be omitted, thereby simplifying the structure and improving the production efficiency of the battery.

[0076] Figure 5 This is a schematic diagram of the assembly of the high-voltage box and the cooling structure of some embodiments of the present application; Figure 6 This is a schematic diagram of an exploded view of the cooling structure of some embodiments of the present application.

[0077] Please refer to Figure 5 and Figure 6 In some embodiments, a liquid inlet pipe 511 and a liquid outlet pipe 512 are provided on the cooling part 51, and a plurality of cooling channels 513 are formed inside the cooling part 51. The cooling channels 513 are respectively connected to the liquid inlet pipe 511 and the liquid outlet pipe 512, and the cooling channels 513 are used for the circulation of heat exchange medium.

[0078] The cooling part 51 may be a cooling plate with a hollow interior, and may be formed by a process of integrally extruding a profile. The cooling part 51 may be provided with a partition rib 514 extending along a first direction X, and a plurality of partition ribs 514 are arranged at intervals along a third direction Z, and a cooling channel 513 is formed between two adjacent partition ribs 514, and each cooling channel 513 is connected in sequence. The first direction X may be the width direction of the cooling part 51, and the third direction Z is the length direction of the cooling part 51.

[0079] The cooling part 51 is placed on the bottom plate of the box body 30, and the liquid inlet pipe 511 and the liquid outlet pipe 512 can be respectively arranged on the side of the cooling part 51 away from the bottom plate of the box body 30. By inputting the heat exchange medium into the liquid inlet pipe 511, the heat exchange medium passes through each cooling channel 513 and finally flows out from the liquid outlet pipe 512, so as to realize the circulation of the heat exchange medium. The heat exchange medium can be a liquid such as water and ethanol, and the heat dissipation of the high pressure box 400 can be realized by absorbing heat through the heat exchange medium.

[0080] In the above scheme, the circulation of the heat exchange medium is realized through the liquid inlet pipe 511 and the liquid outlet pipe 512, and the heat exchange medium in the cooling channel 513 can dissipate heat for the high-pressure box 400. The embodiment of the present application has high heat dissipation efficiency and occupies little space, thereby being able to improve the energy density of the battery.

[0081] In some embodiments, the cooling structure 500 further includes a sealing portion 53 , which is disposed at an end of the cooling channel 513 and is used to seal the cooling channel 513 .

[0082] The sealing portion 53 may be a sealing plate, a sealing strip, etc. The sealing portion 53 may extend along the third direction Z to cover a plurality of cooling channels 513. The sealing portion 53 may be fixed to the cooling channels 513 by means of gluing, snap-fitting, or interference fit. In order to allow each cooling channel 513 to communicate, the partition rib 514 used to separate the cooling channels 513 may be recessed into the cooling channel 513, that is, there is a certain gap between the end of the partition rib 514 and the sealing portion 53, and there is no direct contact.

[0083] In the above solution, the cooling channel 513 is sealed by the sealing portion 53 , so that the sealing performance of the cooling structure 500 can be improved.

[0084] In some embodiments, the number of the mounting beams 52 is two, and the two mounting beams 52 are disposed at intervals.

[0085] The area between the two mounting beams 52 of the cooling part 51 is the mounting area 54, and the high-voltage box 400 can be directly placed in the mounting area 54 to be in direct contact with the cooling part 51. Mounting parts are respectively provided on opposite sides of the high-voltage box 400, and the mounting parts are fixed to the mounting beams 52. For example, bolts are passed through the mounting parts and the mounting beams 52 respectively to lock the high-voltage box 400 to the mounting beams 52. Alternatively, the high-voltage box 400 can be snap-fitted to the mounting beams 52 by snapping.

[0086] In the above solution, by fixing the high voltage box 400 to the two mounting beams 52 respectively, the stability of the high voltage box 400 can be improved.

[0087] Figure 7 This is a schematic diagram of the assembly of the box and the cooling structure of some embodiments of the present application; Figure 8 for Figure 7 Partial schematic diagram.

[0088] Please refer to Figure 7 and Figure 8 In some embodiments, the cooling structure 500 further includes a fastener (not shown), which is used to fix the high-voltage box 400 to the mounting beam 52. The mounting beam 52 is provided with a fixing hole 521 for the fastener to pass through.

[0089] The fixing hole 521 may be a bolt hole, and the fastener is a bolt. After the bolt passes through the mounting portion of the high-voltage box 400 and the fixing hole 521 of the mounting beam 52 respectively, the high-voltage box 400 can be fixed to the mounting beam 52 by tightening the bolt.

[0090] In the above solution, the mounting beam 52 is fixed to the mounting beam 52 by passing the fastener through the fixing hole 521 , and the fixing method is simple and low in cost.

[0091] In some embodiments, two ends of the mounting beam 52 along the first direction X are protruding relative to the cooling portion 51 , and the first direction X is the width direction of the cooling portion 51 .

[0092] The battery cell 20 may expand during operation due to chemical reactions caused by charging and discharging. An expansion beam 62 may be provided in the box 30 to provide a certain elastic support for the battery cell 20, so that the battery cell 20 has a certain buffer during the expansion process, which helps to reduce stress and extend the service life of the battery.

[0093] The high-voltage box compartment 61 is located between the side beam 63 and the expansion beam 62 of the box body 30, and is an area for placing the high-voltage box 400. When the expansion beam 62 installs the cooling structure 500 to the box body 30, the cooling part 51 can be directly placed in the high-voltage box compartment 61, and the two ends of the mounting beam 52 along the first direction X are respectively overlapped on the expansion beam 62 and the cross beam, and the opposite sides of the cooling part 51 along the first direction X can be respectively abutted against the expansion beam 62 and the side beam 63.

[0094] In the above scheme, by arranging the end of the mounting beam 52 along the first direction X to protrude relative to the cooling portion 51, it is convenient to overlap and fix the end of the mounting beam 52 on the crossbeam, expansion beam 62 and other structures of the box body 30, thereby improving the assembly efficiency of the cooling structure 500.

[0095] In some embodiments, the cooling structure 500 further includes an anti-expansion beam 56 , which is disposed on the cooling portion 51 , and the anti-expansion beam 56 is used to contact the expansion beam 62 of the battery box.

[0096] When the battery expands during operation, the expansion beam 62 can provide a certain elastic support for the battery cell 20, so that the battery cell 20 has a certain buffer during the expansion process, which helps to reduce stress and extend the service life of the battery. The end of the anti-expansion beam 56 along the first direction X can abut against the side of the expansion beam 62 away from the battery cell 20. The anti-expansion beam 56 is used to support the expansion beam 62 of the battery box, thereby reducing the expansion degree of the battery cell 20.

[0097] In some embodiments, the mounting beam 52, the cooling portion and the anti-expansion beam 56 are an integrally formed structure. That is, the mounting beam 52, the cooling portion and the anti-expansion beam 56 are integrated into one to form an integral structure. By integrally forming the mounting beam 52, the cooling portion and the anti-expansion beam 56, the integration of the cooling structure 500 is further improved, thereby further improving the production efficiency of the battery.

[0098] In some embodiments, both ends of the anti-expansion beam 56 along the first direction X are protruded relative to the cooling portion 51, and the first direction X is the width direction of the cooling portion 51. By protruding the ends of the anti-expansion beam 56 along the first direction X relative to the cooling portion 51, it is convenient to overlap and fix the ends of the anti-expansion beam 56 on the cross beam of the box body 30, the expansion beam 62 and other structures, and the assembly efficiency of the cooling structure 500 can be improved.

[0099] Fig. 9 Schematic cross-sectional view of the cooling structure of some embodiments of the present application. Fig. 9 As shown, in some embodiments, a dimension H1 of the anti-expansion beam 56 along the second direction Y is greater than a dimension H2 of the mounting beam 52 along the second direction Y, where the second direction Y is the thickness direction of the cooling portion 51 .

[0100] The mounting beam 52 only needs to meet the connection height with the high-voltage box 400 . By setting the height of the anti-expansion beam 56 to be greater than the height of the mounting beam 52 , the support strength of the anti-expansion beam 56 on the expansion beam 62 can be increased.

[0101] In a second aspect, an embodiment of the present application further provides a battery box, comprising a box body 30 and a cooling structure 500 of any of the above-mentioned embodiments, wherein the cooling structure 500 is disposed inside the box body 30 .

[0102] In a third aspect, an embodiment of the present application further provides a battery, comprising a battery cell 20 , a high voltage box 400 and a battery box of any of the above embodiments, wherein the battery cell 20 is disposed inside the battery box, and the high voltage box 400 is fixed to the mounting beam 52 .

[0103] Fig.10 This is a schematic diagram of the assembly of the high voltage box and the battery box body in some embodiments of the present application; Fig.11 for Fig.10 A magnified schematic diagram of part A; Fig.12 This is a schematic diagram of the structure of a high-voltage box according to some embodiments of the present application.

[0104] Please refer to Figure 10-12 In some embodiments, the high-voltage box 400 includes a shell 41 and an electrical component 42. The shell 41 includes a base 411 and a cover 412. The base 411 and the cover 412 are connected to each other to form a cavity. The base 411 is fixed to the mounting beam 52. The electrical component 42 is located in the cavity.

[0105] The base 411 is placed on the cooling structure 500 and directly contacts the cooling structure 500. The electrical component 42 is placed in the cavity formed by the base 411 and the cover 412. The base 411 and the cover 412 can be connected by buckles, bolts, etc. If the internal electrical component 42 is damaged, the cover 412 can be directly opened to remove the electrical component 42.

[0106] The electrical component 42 may include a fuse 422, a relay 421, etc. The relay 421 and the fuse 422 may be connected via a high-voltage connection copper bar. The heat generated by the fuse 422 and the relay 421 during operation may be transferred to the connection structure via the base 411 to achieve heat dissipation.

[0107] In the above solution, through the connection between the base 411 and the cover 412, the electrical component 42 can be placed in the cavity formed by the base 411 and the cover 412, which is convenient for installation and maintenance.

[0108] In some embodiments, the base 411 is detachably connected to the mounting beam 52 and the expansion beam 62 of the battery box, respectively.

[0109] The bottom of the base 411 is directly attached to the cooling structure 500, and the edge of the side of the base 411 can protrude outward to form a mounting portion 413, and the mounting portion 413 is respectively overlapped on the mounting beam 52 and the expansion beam 62. Bolt holes can be set on the mounting portion 413, and the base 411 is respectively locked to the mounting beam 52 and the expansion beam 62 by bolts. Alternatively, the mounting portion 413 can also be fixed to the mounting beam 52 or the expansion beam 62 by means of snap fastening, bonding, etc.

[0110] In the above solution, the base 411 is connected to the mounting beam 52 and the expansion beam 62 respectively, so that the connection stability between the high-voltage box 400 and the battery box can be improved, and the detachable connection is easy to maintain.

[0111] Fig.12 Schematic diagram of the structure of the high-voltage box in some embodiments of the present application. Fig.12 As shown, in some embodiments, a through hole 414 is opened at the bottom of the high voltage box 400 to expose at least a portion of the electrical component 42 , and the electrical component 42 exposed through the through hole 414 is in contact with the cooling structure 500 .

[0112] Exemplarily, a through hole 414 is provided at the position of the relay 421 corresponding to the bottom of the base 411 of the high-voltage box 400, and a through hole 414 is provided at the position of the fuse 422 corresponding to the bottom of the base 411 of the high-voltage box 400, so that the bottom of the relay 421 and the fuse 422 are exposed, and when the high-voltage box 400 is installed, the bottom of the relay 421 and the fuse 422 can directly contact the cooling structure 500. The size and shape of the through hole 414 can match the size and shape of the electrical component 42, so that the bottom of the electrical component 42 is just exposed. The bottom of the electrical component 42 can also be set flush with the bottom of the base 411, so that the bottom of the electrical component 42 and the bottom of the base 411 can both contact the cooling structure 500.

[0113] In the above scheme, by opening a through hole 414 at the bottom of the high-voltage box 400, at least part of the electrical component 42 is exposed, so that the electrical component 42 can directly contact the cooling structure 500, and the heat generated by the electrical component 42 can be directly transferred to the cooling structure 500, thereby improving the heat dissipation efficiency of the high-voltage box 400.

[0114] In some embodiments, a thermally conductive adhesive layer 43 is disposed at the bottom of the high voltage box 400 , and the thermally conductive adhesive layer 43 is bonded to the cooling structure 500 .

[0115] The thermal conductive layer is made of a colloid with thermal conductive properties, such as silicone rubber thermal conductive glue, polyurethane thermal conductive glue, epoxy resin thermal conductive glue, acrylic thermal conductive glue, etc.

[0116] Thermal conductive adhesive is coated on the bottom of the high-voltage box 400 , and then the high-voltage box 400 is placed on the cooling structure 500 . After the thermal conductive adhesive is cured, a thermal conductive adhesive layer 43 is formed to achieve bonding and fixing of the high-voltage box 400 and the cooling structure 500 .

[0117] In the above solution, by providing a thermal conductive adhesive layer 43 at the bottom of the high-voltage box 400 , the heat transfer of the high-voltage box 400 can be accelerated, thereby improving the heat dissipation efficiency of the high-voltage box 400 .

[0118] Fig.13 FIG. 1 is a partial schematic diagram of the cooling structure of some other embodiments of the present application. Fig.13 As shown, in other embodiments, a heat-conducting adhesive layer 43 is provided on a side of the cooling structure 500 that is in contact with the high-voltage box 400 .

[0119] The thermal conductive layer is made of a colloid with thermal conductive properties, such as silicone rubber thermal conductive glue, polyurethane thermal conductive glue, epoxy resin thermal conductive glue, acrylic thermal conductive glue, etc.

[0120] Thermally conductive adhesive is coated on the cooling structure 500 , and then the high-voltage box 400 is placed on the cooling structure 500 . After the thermally conductive adhesive is cured, a thermally conductive adhesive layer 43 is formed, thereby achieving bonding and fixing of the high-voltage box 400 and the cooling structure 500 .

[0121] In the above solution, by providing the heat conductive adhesive layer 43 on the cooling structure 500 , the heat transfer of the high voltage box 400 can be accelerated, and the heat dissipation efficiency of the high voltage box 400 can be improved.

[0122] In a fourth aspect, an embodiment of the present application provides an electrical device, comprising the above-mentioned battery, and the battery is used to provide electrical energy.

[0123] According to some embodiments of the present application, the present application provides a cooling structure 500 of a high-pressure box 400, including a cooling portion 51 and a mounting beam 52, wherein the cooling portion 51 is used to cool the high-pressure box 400; the mounting beam 52 is used to fix the high-pressure box 400, the mounting beam 52 is disposed on the cooling portion 51, and the mounting beam 52 and the cooling portion are an integrally formed structure. The cooling portion 51 is provided with a liquid inlet pipe 511 and a liquid outlet pipe 512, and a plurality of cooling channels 513 are formed inside the cooling portion 51, and the cooling channels 513 are respectively connected to the liquid inlet pipe 511 and the liquid outlet pipe 512, and the cooling channels 513 are used to circulate heat exchange medium.

[0124] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A cooling structure for a high-voltage box, characterized in that: include: A cooling unit, used for cooling the high-voltage box; The mounting beam is used to fix the high-voltage box. The mounting beam is arranged on the cooling part, and the mounting beam and the cooling part are an integrally formed structure.

2. The cooling structure of the high-voltage box according to claim 1, characterized in that: The cooling part is provided with a liquid inlet pipe and a liquid outlet pipe, and a plurality of cooling channels are formed inside the cooling part. The cooling channels are respectively connected with the liquid inlet pipe and the liquid outlet pipe, and the cooling channels are used for circulating heat exchange medium.

3. The cooling structure of the high voltage box according to claim 2, characterized in that: The cooling structure further includes a sealing portion, which is disposed at an end of the cooling channel and is used to seal the cooling channel.

4. The cooling structure of the high voltage box according to claim 1, characterized in that: The number of the mounting beams is two, and the two mounting beams are arranged at intervals.

5. The cooling structure of the high voltage box according to claim 1, characterized in that: The cooling structure further comprises a fastener, and the fastener is used to fix the high-voltage box to the mounting beam, and the mounting beam is provided with a fixing hole for the fastener to pass through.

6. The cooling structure of the high voltage box according to claim 1, characterized in that: Both ends of the mounting beam along a first direction are protruded relative to the cooling portion, and the first direction is a width direction of the cooling portion.

7. The cooling structure of the high voltage box according to claim 1, characterized in that: The cooling structure further includes an anti-expansion beam, which is disposed on the cooling portion and is used to contact an expansion beam of the battery box.

8. The cooling structure of the high voltage box according to claim 7, characterized in that: The mounting beam, the cooling portion and the anti-expansion beam are an integrally formed structure.

9. The cooling structure of the high voltage box according to claim 7, characterized in that: Both ends of the anti-expansion beam along a first direction are protruded relative to the cooling portion, and the first direction is a width direction of the cooling portion.

10. The cooling structure of the high voltage box according to claim 7, characterized in that: A dimension of the anti-expansion beam along a second direction is greater than a dimension of the mounting beam along the second direction, and the second direction is a thickness direction of the cooling portion.

11. A battery box, characterized in that: include: Box; According to the cooling structure of the high-voltage box according to any one of claims 1 to 10, the cooling structure is arranged inside the box body.

12. A battery, characterized in that: include: Battery cells; High voltage box; According to the battery box of claim 11, the battery cell is arranged inside the battery box, and the high voltage box is fixed to the mounting beam.

13. The battery according to claim 12, characterized in that The high voltage box comprises: The housing comprises a base and a cover, wherein the base and the cover are connected to each other to enclose a cavity, and the base is fixed to the mounting beam; The electrical component is located in the cavity.

14. The battery according to claim 13, characterized in that The base is detachably connected to the mounting beam and the expansion beam of the battery box respectively.

15. The battery according to claim 13, characterized in that The bottom of the base is provided with a through hole for exposing at least a part of the electrical components, and the electrical components exposed through the through hole are in contact with the cooling structure.

16. The battery according to claim 12, characterized in that A heat-conducting adhesive layer is provided at the bottom of the high-voltage box, and the heat-conducting adhesive layer is bonded to the cooling structure.

17. The battery according to claim 12, characterized in that A heat-conducting adhesive layer is provided on a side of the cooling structure that is in contact with the high-voltage box.

18. An electrical device, characterized in that: The invention comprises a battery as claimed in any one of claims 12 to 16, wherein the battery is used to provide electrical energy.

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