Battery device and electric equipment

Abstract

The utility model discloses a battery device and electric equipment, and relates to the technical field of batteries, the battery device comprises a box body, a battery module, a high-voltage box and a connector, the battery module is arranged in the box body, the battery module is provided with an output electrode, the high-voltage box is provided with an input end and an output end, and the input end is electrically connected with the output electrode; the connector is provided with a shell, a plug-in end and a connecting piece, the plug-in end and the connecting piece are installed on the shell, the output end and the plug-in end are electrically connected through the connecting piece, a heat conduction piece is arranged on the connecting piece, and the heat conduction piece and the connecting piece are in heat conduction connection and are arranged in an insulating mode. By arranging the heat conduction piece on the connecting piece of the connector, the heat conduction piece is in heat conduction connection with the connecting piece and is insulated from the connecting piece, so that an insulation effect can be achieved, the risk of electric leakage or short circuit can be reduced, heat on the connecting piece can be timely dissipated through the heat conduction piece, the temperature of the connector is reduced, and the risk of fire of the battery device is reduced.

Description

Technical Field

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

[0002] With the rapid development of new energy electric vehicles, battery safety issues have attracted more and more attention from consumers. The most prominent safety issue is the fire problem during driving or charging. When electric vehicles are driving or charging, current will flow through the battery device, which will generate heat, especially under high-power working conditions. If the heat cannot be discharged in time, it may cause a fire. Utility Model Content

[0003] The main purpose of the present application is to propose a battery device and an electrical device, aiming to at least improve the technical problem of a large fire risk in the battery device.

[0004] According to some embodiments of the present application, the present application provides a battery device, including a box, a battery module, a high-voltage box and a connector, the battery module is arranged in the box, the battery module is provided with an output electrode, the high-voltage box is provided with an input end and an output end, the input end and the output electrode are electrically connected, the connector is provided with a shell, and a plug-in end and a connector respectively installed on the shell, the output end and the plug-in end are electrically connected through the connector, a heat conductor is provided on the connector, the heat conductor is thermally connected to the connector, and is insulated.

[0005] By arranging a heat conductive member on the connector of the connector, the heat conductive member is thermally connected to the connector and insulated, which can not only play an insulating role to reduce the risk of leakage or short circuit, but also can dissipate the heat on the connector through the heat conductive member in time, reduce the temperature of the connector, and reduce the risk of fire in the battery device.

[0006] In some embodiments, the heat conductive component includes a heat dissipating component and an insulating component connected to each other, the heat dissipating component is thermally connected to the insulating component, and the insulating component is thermally connected to the connecting component and is insulated.

[0007] By arranging the heat-conducting component including the heat-dissipating component and the insulating component, the insulating component plays a role in heat dissipation and insulation of the connecting component, and the heat-dissipating component plays a role in heat dissipation of the insulating component, which can achieve both insulation and heat dissipation effects.

[0008] In some embodiments, the insulating component is formed with a slot, and the connecting component is installed in the slot.

[0009] A detachable connection is achieved by arranging a clamping groove and a connecting piece on the insulating component, which is convenient for installation and disassembly.

[0010] In some embodiments, the insulating component includes a base plate and side plates respectively arranged on opposite sides of the base plate, the slot is surrounded by the base plate and the two side plates, and a protruding end extending toward the slot is arranged on the side of the side plate away from the base plate.

[0011] By arranging the protruding end on the side plate of the insulating component, the risk of the connecting component falling off from the clamping opening of the clamping slot can be reduced, and the reliability of the connection between the insulating component and the connecting component can be improved.

[0012] In some embodiments, the connecting member includes at least two copper bars, which are installed in the slots and are arranged in close contact with the base plate. The number of the insulator components is equal to the number of the copper bars and are arranged one-to-one. The extension direction of the slots is the same as the extension direction of the corresponding copper bars.

[0013] By arranging the copper bar to fit with the bottom plate, and the number of insulating components is equal to the number of the copper bars and is arranged one-to-one, the extension direction of the slot is the same as the extension direction of the corresponding copper bar, the heat conduction area of ​​the copper bar can be increased and the heat conduction efficiency can be improved.

[0014] In some embodiments, the insulating component is made of plastic, and the heat dissipating component is made of metal material.

[0015] By using insulating and thermally conductive plastics to make insulating components, both insulation and thermal conductivity requirements can be met; using metal materials to make heat dissipation components can further improve heat dissipation efficiency and reduce the risk of thermal runaway of the battery device.

[0016] In some embodiments, a protruding end is provided on a side of the insulating component facing the heat dissipating component, and a recessed groove is provided on a side of the heat dissipating component facing the insulating component, and the protruding end is snap-fitted with the recessed groove.

[0017] By setting an extended end on the edge component and a recessed groove matching the extended end on the heat dissipation component, the extended end extends into the recessed groove to connect the heat dissipation component with the insulating component, which can increase the contact area, improve the heat dissipation efficiency, and improve the connection strength.

[0018] In some embodiments, the recessed groove includes a first sub-groove, a second sub-groove, and a third sub-groove connecting the first sub-groove and the second sub-groove, the first sub-groove and the second sub-groove are arranged opposite to each other, and the two ends of the third sub-groove are respectively connected to the middle position of the first sub-groove and the middle position of the second sub-groove.

[0019] By providing the recessed groove including the first sub-groove, the second sub-groove and the third sub-groove connecting the first sub-groove and the second sub-groove, the flow of the liquid plastic material is facilitated during injection molding, and the uniformity of injection molding is improved. At the same time, it can make the contact area between the insulating sub-component and the heat dissipation sub-component larger, improve the heat dissipation efficiency, and reduce the risk of thermal runaway and fire of the battery device.

[0020] In some embodiments, a recessed groove is provided on a side of the insulating component facing the heat dissipating component, and a protruding end is provided on a side of the heat dissipating component facing the insulating component, and the protruding end is snap-fitted with the recessed groove.

[0021] By providing a recessed groove on the insulating sub-component and providing a protruding end on the heat dissipation sub-component, the contact area between the heat dissipation sub-component and the insulating sub-component can be increased, the heat dissipation efficiency can be improved, and the connection strength can be improved at the same time.

[0022] In some embodiments, the heat conductive component further includes a thermal pad disposed on the heat dissipation component, a cold plate is disposed in the box body, and the thermal pad is thermally connected to the box body or the cold plate.

[0023] By providing a thermal pad installed on the heat dissipation sub-component, the gap between the heat dissipation sub-component and the box or the cold plate can be filled, thereby improving the heat dissipation efficiency.

[0024] In some embodiments, the thermal pad is disposed on a side of the heat dissipation component facing away from the insulation component.

[0025] By arranging the thermal pad on the side of the heat dissipation component away from the insulating component, it can be more convenient to connect the heat conduction pad to the box or the cold plate, which is beneficial to heat dissipation.

[0026] In some embodiments, the thermally conductive pad is an elastic thermally conductive pad.

[0027] By using a material with elastic properties to make the thermal pad, manufacturing or assembly tolerances can be accommodated, thereby improving manufacturing efficiency.

[0028] In some embodiments, the battery device further includes a conductive member, and the output electrode and the input terminal are electrically connected via the conductive member.

[0029] By providing a conductive member, the battery module and the high-voltage box can be electrically connected to transfer current to the high-voltage box.

[0030] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, 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 application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0032] Figure 1 A schematic diagram of the structure of a vehicle according to some embodiments of the present application;

[0033] Figure 2 A schematic diagram of the exploded structure of a battery according to some embodiments of the present application;

[0034] Figure 3 A schematic diagram of the connection relationship of a partial structure of a battery device in some embodiments of the present application;

[0035] Figure 4 A schematic diagram of the three-dimensional structure of a connector of a battery device according to some embodiments of the present application;

[0036] Figure 5 A schematic structural diagram of a connector of a battery device according to some embodiments of the present application from one perspective;

[0037] Figure 6 A schematic structural diagram of a connector of a battery device according to some embodiments of the present application from another perspective;

[0038] Figure 7 A schematic structural diagram of an insulating component of a battery device according to some embodiments of the present application from one perspective;

[0039] Figure 8 A schematic structural diagram of an insulating component of a battery device according to some embodiments of the present application from another perspective;

[0040] Fig. 9 Schematic diagram of the three-dimensional structure of the heat dissipation sub-component of the battery device according to some embodiments of the present application.

[0041] Description of Figure Numbers:

[0042] 1000. Vehicles;

[0043] 100, battery device; 200, controller; 300, motor;

[0044] 10. Box body; 11. Upper cover; 12. Box body;

[0045] 20. Battery module; 210. Battery cell; 30. High voltage box; 31. Input terminal; 32. Output terminal;

[0046] 40. connector; 50. output electrode; 60. conductive member;

[0047] 1. Shell; 2. Connector; 21. Copper busbar; 3. Plug-in terminal; 4. Heat-conducting component; 41. Insulating component; 411. Bottom plate; 412. Side plate; 413. Card slot; 414. Card opening; 415. Protruding end; 416. Extended end; 42. Heat-dissipating component; 421. Concave slot; 4211. First sub-slot; 4212. Second sub-slot; 4213. Third sub-slot; 43. Thermal pad; 5. Sealing ring.

[0048] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in this embodiment to clearly and completely describe the technical solution in this embodiment. Obviously, the described embodiment is only a part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0050] It should be noted that all directional indications in this embodiment (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0051] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0052] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0053] In addition, the technical solutions between the various embodiments of the present application can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application. It should be understood that the specific embodiments described here are only used to explain this application and are not used to limit this application.

[0054] The descriptions of directions such as "up", "down", "front", "back", "left" and "right" in this application are based on the directions shown in the drawings and are only used to explain the relative positional relationship between the components in the postures shown in the drawings. If the specific posture changes, the directional indication will also change accordingly.

[0055] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric vehicles, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding. With the rapid development of new energy electric vehicles, the safety of batteries has attracted more and more attention from consumers. The most prominent safety issue is the fire problem during driving or charging.

[0056] After careful research, the applicant found that electric vehicle fires have occurred frequently in recent years, and a large part of the reason is that the heat inside the battery device cannot be discharged in time. With the gradual popularization of electric vehicles, a big problem is that electric vehicles are underpowered and charging time is too long. In order to effectively solve this problem, battery manufacturers use the method of increasing the current. For example, by increasing the charging current during the charging process, the charging time can be effectively reduced, which is the main way to achieve fast charging of batteries advertised on the market. Similarly, discharging with a large current during use can improve the discharge efficiency and increase the power of electric vehicles. However, when current passes through a conductor, heat is generated. Under high-power working conditions, the heat generated is large. If the heat cannot be discharged in time, it may cause the battery device to catch fire.

[0057] After further research, the applicant found that in the related technology, there is a way to quickly remove the heat generated by the current in the wire by setting a water cooling channel in the wire, and there is also a way to set a water cooling box on the socket to form a water cooling cycle to reduce the heat of the internal components of the socket. However, the design of the water cooling channel and the water cooling box will increase the volume. In addition, there are problems such as small amount of coolant, small heat dissipation area, complex manufacturing and poor heat dissipation effect. At present, only the heat dissipation of the wire and the socket is focused on, and there is no design for heat dissipation at the location where the connector is connected to the high-voltage box.

[0058] To this end, the present application provides a battery device, including a box, a battery module, a high-voltage box and a connector, wherein the battery module is arranged in the box, the battery module is provided with an output electrode, the high-voltage box is provided with an input end and an output end, the input end and the output electrode are electrically connected, the connector is provided with a shell, and a plug-in end and a connector respectively installed on the shell, the connector electrically connects the output end and the plug-in end, a heat conductor is arranged on the connector, and the heat conductor and the connector are heat-conductively insulated. By arranging a heat conductor on the connector of the connector, and the heat conductor and the connector are heat-conductively connected and insulated, it can not only play an insulating role and reduce the risk of leakage or short circuit, but also can timely dissipate the heat on the connector through the heat conductor, reduce the temperature of the connector, and reduce the risk of fire in the battery device.

[0059] 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 electrical equipment may be a vehicle 1000, and 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 device 100 is provided inside the vehicle 1000, and the battery device 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery device 100 may be used to power the vehicle 1000, for example, the battery device 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 device 100 to power the motor 300, for example, for the working power demand of the vehicle 1000 during starting, navigation and driving.

[0060] In some embodiments of the present application, the battery device 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.

[0061] Please refer to Figure 2 , Figure 2Schematic diagram of the exploded structure of the battery device 100 provided in some embodiments of the present application. The battery device 100 includes a box body 10 and a battery cell 210, and the battery cell 210 is contained in the box body 10. Among them, the box body 10 is used to provide a storage space for the battery cell 210, and the box body 10 can adopt a variety of structures. In some embodiments, the box body 10 may include an upper cover 11 and a box body 12, and the upper cover 11 and the box body 12 cover each other, and the upper cover 11 and the box body 12 jointly define a storage space for accommodating the battery cell 210. The box body 12 can be a hollow structure with one end open, and the upper cover 11 can be a plate-like structure. The upper cover 11 covers the open side of the box body 12, so that the upper cover 11 and the box body 12 jointly define a storage space; the upper cover 11 and the box body 12 can also be hollow structures with one side open, and the open side of the upper cover 11 covers the open side of the box body 12. Of course, the box body 10 formed by the upper cover 11 and the box body 12 can be in various shapes, such as a cylinder, a cuboid, etc.

[0062] The battery device 100 mentioned in the embodiment of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include a plurality of battery cells 210, and the plurality of battery cells 210 are connected in series, in parallel or in mixed connection through a busbar.

[0063] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells 210 .

[0064] As an example, the battery cell assembly may be a battery module 20, and the battery module 20 is formed by arranging and fixing a plurality of battery cells 210 to form an independent module. As an example, the battery module 20 may be formed by bundling a plurality of battery cells 210 by a cable tie.

[0065] In some embodiments, the battery device 100 may be a battery pack, which includes a case 10 and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case 10 .

[0066] As an example, the battery cell assembly may be a battery module 20 , and the battery cell assembly may be accommodated in the box body 10 by fixing the battery module 20 in the box body 10 .

[0067] As an example, the battery cell assembly may also be accommodated in the case 10 by directly fixing the plurality of battery cells 210 to the case 10 .

[0068] In the battery device 100, there may be multiple battery cells 210, and the multiple battery cells 210 may be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cells 210 are both connected in series and in parallel. The multiple battery cells 210 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 210 is accommodated in the box 10; of course, the battery device 100 may also be a battery module formed by connecting multiple battery cells 210 in series, in parallel, or in a mixed connection, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the box 10. The battery device 100 may also include other structures, for example, the battery device 100 may also include a busbar component for realizing electrical connection between the multiple battery cells 210.

[0069] Each battery cell 210 may be a secondary battery or a primary battery, or a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 210 may be cylindrical, flat, rectangular, or in other shapes.

[0070] The present application provides a battery device 100 .

[0071] Reference Figure 3 and Figure 4 According to some embodiments of the present application, the present application provides a battery device 100, including a box body 10, a battery module 20, a high-voltage box 30 and a connector 40, the battery module 20 is arranged in the box body 10, the battery module 20 is provided with an output electrode 50, the high-voltage box 30 is provided with an input terminal 31 and an output terminal 32, the input terminal 31 and the output electrode 50 are electrically connected, the connector 40 is provided with a shell 1, and a plug-in terminal 3 and a connector 2 respectively installed on the shell body 1, the output terminal 32 and the plug-in terminal 3 are electrically connected through the connector 2, and a heat conductor 4 is provided on the connector 2, and the heat conductor 4 and the connector 2 are thermally insulated.

[0072] The battery device 100 is also called a battery pack. The box 10 is the outer shell of the battery device 100. The battery module 20 may include a plurality of battery cells 210, which are also called battery cells. A plurality of battery cells 210 are connected in series or in parallel to form a battery module 20. A battery device 100 may have a plurality of battery modules 20. The plurality of battery cells 210 in the battery module 20 are connected in series or in parallel and then output to the output electrode 50 together. Generally, a battery module 20 includes two output electrodes 50, which are a positive output electrode and a negative output electrode. The corresponding high-voltage box 30 is also provided with two input terminals 31 and two output terminals 32. Relays and other electronic components may be provided in the high-voltage box 30. The input terminal 31 is connected to the output electrode 50. Specifically, the input terminal 31 may also include a positive input terminal and a negative input terminal. The positive input terminal is electrically connected to the positive output electrode, and the negative input terminal is electrically connected to the negative output electrode. The connector 40 includes a connector 2 and a plug terminal 3. The connector 2 is used to electrically connect to the output terminal 32 of the high-voltage box 30, and output voltage and current through the plug terminal 3 electrically connected to the connector 2. The plug terminal 3 can be used as an external interface of the battery device 100 and connected to the body of the electrical device, specifically, it can be electrically connected to the body of the electric vehicle or vehicle 1000, and used as a power device to provide electrical energy. The connector 40 is generally a high-voltage connector.

[0073] The connector 2 has a conductive function, can be made of a metal material, and can be electrically connected to the output terminal 32 and the plug-in terminal 3 to output electrical energy. When current flows through the connector 2, heat will be generated. Especially in the case of large current, the heat generation of the connector 2 will become more serious. If the heat cannot be dissipated in time, it will cause the battery device 100 to catch fire in severe cases. In the above-mentioned embodiment of the present application, by setting a heat conductor 4 connected to the connector 2, and the heat conductor 4 is made of a heat-conducting material, a better heat dissipation effect can be achieved. At the same time, there is current passing through the connector 2. In order to reduce the risk of leakage or short circuit caused by current leakage, the heat conductor 4 must also have an insulating effect and can be made of an insulating material, that is, the heat conductor 4 needs to be connected to the connector 2 in a heat-conducting and insulating manner, which is the meaning of the aforementioned heat-conducting and insulating setting. In a specific embodiment, the heat conductor 4 can also be made of a known plastic with high thermal conductivity, and it can also be considered to be made of thermally conductive silicone or thermally conductive rubber.

[0074] By arranging a heat conducting member 4 on the connector 2 of the connector 40, the heat conducting member 4 is thermally connected to the connector 2 and is insulated, which can not only play an insulating role to reduce the risk of leakage or short circuit, but also can dissipate the heat on the connector 2 through the heat conducting member 4 in time, reduce the temperature of the connector 40, and further reduce the risk of fire in the battery device 100.

[0075] Reference Figure 3In some embodiments, the battery device 100 further includes a conductive member 60 , and the output electrode 50 and the input terminal 31 are electrically connected via the conductive member 60 .

[0076] The conductive member 60 may be a copper bar, and the output electrode 50 led out from the battery module 20 is connected to the input end 31 of the high-voltage box 30 through the copper bar, and the copper bar plays a connecting and conductive role. In addition, a sealing ring 5 may be provided on the housing 1 to improve the sealing performance of the connection between the connector 40 and the high-voltage box 30.

[0077] By providing the conductive member 60 , the battery module 20 and the high-voltage box 30 can be electrically connected, and current can be output to the high-voltage box 30 .

[0078] Reference Figure 4-Figure 6 In some embodiments, the heat conducting component 4 includes a heat dissipating component 42 and an insulating component 41 which are connected to each other. The insulating component 41 is thermally connected to the connecting component 2 and is thermally connected to the connecting component 2 and is insulated.

[0079] The insulating component 41 is made of an insulating and heat-conducting material, and the heat dissipating component 42 is made of a heat-conducting material. The heat-conducting component 4 may include two parts, and the two parts are made of different materials, specifically the insulating component 41 and the heat dissipating component 42. The insulating and heat-conducting material and the heat-conducting material here are all known materials. Specifically, the insulating component 41 is used to directly physically connect with the connector 2. In order to achieve insulation and heat conduction, the insulating material can be made of a material that can be insulating and heat-conducting, such as the plastic with high thermal conductivity mentioned above. The heat on the connector 2 is transferred to the heat dissipating component 42 through the insulating component 41. Since the heat dissipating component 42 is not directly connected to the connector 2, the insulating component 41 can play an insulating role. Therefore, the heat dissipating component 42 does not need to consider the insulation performance, but only the thermal conductivity. It can be made of a metal material with better thermal conductivity to further improve the thermal conductivity efficiency.

[0080] The heat conducting member 4 includes a heat dissipating member 42 and an insulating member 41 . The insulating member 41 dissipates heat and insulates the connector 2 , and the heat dissipating member 42 dissipates heat for the insulating member 41 . Thus, both insulation and heat dissipation effects can be achieved.

[0081] Reference Figure 4 In some embodiments, the heat conducting component 4 further includes a heat conducting pad 43 disposed on the heat dissipating component 42 , a cold plate is disposed in the box body 10 , and the heat conducting pad 43 is heat-conductingly connected to the box body 10 or the cold plate.

[0082] The heat absorbed by the heat conductor 4 from the connector 2 needs to be conducted out eventually. Generally, the heat conductor 4 is connected to the cold plate or the housing 10 in contact to transfer heat. The cold plate can be a water-cooled plate or an air-cooled plate. Water or air is passed into the cold plate to take away the heat. The heat dissipation sub-component 42 is generally made of metal material and has a certain rigidity. However, in the actual production process, it is inevitable that there will be certain production or assembly tolerances. If there is a certain gap between the heat dissipation sub-component 42 and the cold plate or the housing 10, then the thermal connection cannot be achieved. In this embodiment, a thermal pad 43 is provided on the heat dissipation sub-component 42. The thermal pad 43 is made of a thermally conductive material, which can be a thermally conductive plastic, a thermally conductive rubber or a metal gasket. The thermal pad 43 is provided between the heat dissipation sub-component 42 and the cold plate or the housing 10 to play a role in thermal connection and fill the gap between the heat dissipation sub-component 42 and the cold plate or the housing 10. Of course, for gaps of different sizes during assembly, thermal pads 43 of different thicknesses can be selected. The thermal pads 43 can be connected to the heat dissipation component 42 by bonding, or connected to the cold plate or box 10 by bonding, specifically by double-sided adhesive bonding or gluing.

[0083] By providing the thermal pad 43 , which is mounted on the heat dissipation sub-component 42 , the gap between the heat dissipation sub-component 42 and the box 10 or the cold plate can be filled, thereby improving the heat dissipation efficiency.

[0084] Reference Figure 4 In some embodiments, the thermal pad 43 is disposed on a side of the heat dissipation component 42 that is away from the insulating component 41 .

[0085] Regarding the location of the heat conductive pad 43, in theory, it can be located on any side of the heat dissipation component 42 except the top side where the insulating component 41 is located, and the location is mainly determined by the contact surface between the heat dissipation component 42 and the cold plate or box 10. Generally speaking, if the side connected to the insulating component 41 is called the top side of the heat dissipation component 42, then the bottom side of the heat dissipation component 42 that is located opposite to the top side is generally in contact with the cold plate or box 10.

[0086] By arranging the thermal pad 43 on the side of the heat dissipation component 42 away from the insulating component 41 , it is possible to more conveniently connect the thermal pad 43 to the box 10 or the cold plate, which is beneficial to heat dissipation.

[0087] In some embodiments, the thermal pad 43 is an elastic thermal pad.

[0088] As described above, thermal pads 43 of different thicknesses can be selected according to the gap between the heat dissipation component 42 and the cold plate or the box 10. However, in the actual production process, the thermal pad 43 is installed on the heat dissipation component 42 and then installed on the box 10. If the size is incorrect, the thermal pad 43 needs to be replaced, and the gap tolerance of each battery device 100 is not necessarily the same. Thermal pads 43 of different thicknesses need to be prepared, which brings trouble to the actual production and reduces production efficiency. Therefore, the thermal pad 43 can be made of elastic material, that is, an elastic thermal pad. The thermal pad 43 made of elastic material can undergo a certain deformation to accommodate production or assembly tolerances. For example, it can be squeezed and thinned. The elastic material can be rubber, silicone or plastic with high thermal conductivity and elastic properties.

[0089] By using a material with elastic properties to make the thermal pad 43, manufacturing or assembly tolerances can be accommodated, thereby improving manufacturing efficiency.

[0090] Reference Figure 4 or Figure 5 In some embodiments, the insulator component 41 is formed with a slot 413 , and the connector 2 is installed in the slot 413 .

[0091] The insulating component 41 can be installed on the connecting component 2 in the form of a detachable connection. Specifically, a slot 413 can be set on the component. The insulating component 41 can also be made of a material that can produce a certain elastic deformation. The insulating component 41 is clamped on the connecting component 2 through the slot 413, which is convenient for installation and disassembly.

[0092] The insulator component 41 is provided with a clamping groove 413 to realize a detachable connection with the connecting component 2, so as to facilitate installation and disassembly.

[0093] Reference Figure 4 or Figure 5 In some embodiments, the connector 2 includes at least two copper bars 21, which are installed in the slots 413 and are fitted to the bottom plate 411. The number of insulator components 41 is equal to the number of copper bars 21 and are arranged one-to-one. The extension direction of the slots 413 is the same as the extension direction of the corresponding copper bars 21.

[0094] The connector 2 can be made of metal to play a conductive role. Specifically, it can be made of copper and made into a flat copper bar 21 or copper sheet. The plane of the copper sheet is arranged in affixed with the bottom plate 411 of the insulating sub-component 41, so that the heat conduction area can be increased. Each copper bar 21 is correspondingly provided with an insulating sub-component 41, and the copper bar 21 of each heat-conducting part 4 is connected to the corresponding insulating sub-component 41. Setting this one-to-one correspondence can quickly conduct away the heat of each copper bar 21 and improve the heat conduction efficiency. The extension direction of the slot 413 refers to the length direction of the slot 413. The copper bar 21 is generally flat, and the extension direction of the copper bar 21 also refers to the length direction of the copper bar 21. The same extension direction of the two is set to increase the contact heat conduction area. Of course, multiple insulating sub-components 41 can also be set on a copper bar 21, such as a copper bar 21 corresponding to multiple heat-conducting parts 4; or, multiple insulating sub-components 41 are set on a heat-conducting part 4.

[0095] By arranging the copper busbar 21 to fit the bottom plate 411, and the number of insulating components 41 is equal to the number of copper busbars 21 and arranged one-to-one, the extension direction of the slot 413 is the same as the extension direction of the corresponding copper busbar 21, the contact heat conduction area of ​​the copper busbar 21 can be increased and the heat conduction efficiency can be improved.

[0096] In some embodiments, the insulating component 41 is made of plastic, such as a plastic component, and the heat dissipating component 42 is made of a metal material, such as a metal component.

[0097] The insulating sub-component 41 needs to play the role of insulation and heat conduction. Plastic is a commonly used insulating component. The insulating sub-component 41 can be made of a plastic material with high thermal conductivity. For the heat dissipation sub-component 42, the main thing to consider is the heat dissipation effect. It is not necessary to have insulation performance. Therefore, it can be made of metal material. Metal material has better thermal conductivity and can improve heat dissipation efficiency. Specifically, copper or aluminum can be used to make the heat dissipation sub-component 42. It should be noted that the high thermal conductivity plastic material parts and metal parts described in this application are all made of existing materials.

[0098] By using insulating and heat-conductive plastic to make the insulating component 41, both insulation and heat-conducting requirements can be met; by using metal material to make the heat dissipating component 42, the heat dissipation efficiency can be further improved, and the risk of thermal runaway of the battery device 100 can be reduced.

[0099] Reference Figure 7 and Figure 8 In some embodiments, the insulating component 41 includes a bottom plate 411 and side plates 412 respectively arranged on opposite sides of the bottom plate 411. The slot 413 is surrounded by the bottom plate 411 and the two side plates 412. A protruding end 415 extending toward the slot 413 is provided on the side of the side plate 412 away from the bottom plate 411.

[0100] Regarding the specific embodiment of the insulating component 41, it can include a bottom plate 411 and side plates 412 respectively arranged on opposite sides of the bottom plate 411. The cross-section of the bottom plate 411 and the two side plates 412 forms a concave shape. The slot 413 is a space surrounded by the bottom plate 411 and the two side plates 412. The slot 413 is formed with a snap-in opening 414. When the connector 2 is installed in the slot 413, the connector 2 can easily fall off from the snap-in opening 414. To this end, a protruding end 415 can be set on the side panel 412. Specifically, the protruding end 415 can be set at a position of the side panel 412 close to the snap-in opening 414, and the protruding end 415 is extended in the direction of the slot 413. It can also be said that the protruding end 415 on one side panel 412 is set in the direction of the other opposite side panel 412, so as to form a snap-in structure. The snap-in structure on the two side panels 412 is set at the snap-in opening 414 of the slot 413, and can be abutted against the connecting member 2, thereby reducing the risk of the connecting member 2 falling off from the snap-in opening 414.

[0101] By providing the protruding end 415 on the side plate 412 of the insulating component 41 , the risk of the connecting component 2 falling off from the engaging opening 414 of the engaging groove 413 can be reduced, thereby improving the reliability of the connection between the insulating component 41 and the connecting component 2 .

[0102] Reference Figure 7-Figure 9 In some embodiments, a protruding end 416 is provided on the side of the insulating component 41 facing the heat dissipating component 42, and a recessed groove 421 is provided on the side of the heat dissipating component 42 facing the insulating component 41. The protruding end 416 and the recessed groove 421 are snap-fitted or plug-fitted to connect the heat dissipating component 42 and the insulating component 41.

[0103] In order to improve the connection strength between the insulating component 41 and the heat dissipation component 42, they can be connected in a mutually embedded manner. Specifically, a protruding end 416 can be set on the insulating component 41, and a recessed groove 421 that matches the protruding end 416 can be set on the heat dissipation component 42. The protruding end 416 extends into the recessed groove 421 so that the heat dissipation component 42 is connected to the insulating component 41. This can increase the contact area, which can not only further improve the heat conduction efficiency, but also improve the connection strength between the two by increasing the friction between the two. Regarding the specific forms of the protruding end 416 and the recessed groove 421, this embodiment does not make specific restrictions, and can be rectangular, circular, elliptical, triangular or irregular shapes. It should also be noted here that regarding the manufacturing form of the heat conducting component 4, an injection molding arrangement can be adopted. Specifically, during injection molding, the insulating plastic material can be flowed into the recessed groove 421 of the heat dissipation component 42 to achieve injection molding.

[0104] By setting an extended end 416 on the edge component and setting a recessed groove 421 matched with the extended end 416 on the heat dissipation component 42, the extended end 416 extends into the recessed groove 421 to connect the heat dissipation component 42 with the insulating component 41, which can increase the contact area, thereby improving the heat dissipation efficiency and the connection strength.

[0105] Reference Fig. 9 In some embodiments, the recessed groove 421 includes a first sub-groove 4211, a second sub-groove 4212, and a third sub-groove 4213 connecting the first sub-groove 4211 and the second sub-groove 4212. The first sub-groove 4211 and the second sub-groove 4212 are arranged opposite to each other, and the two ends of the third sub-groove 4213 are respectively connected to the middle position of the first sub-groove 4211 and the middle position of the second sub-groove 4212.

[0106] This embodiment discloses a specific shape of the recessed groove 421. The recessed groove 421 may include two relatively parallel first sub-grooves 4211 and second sub-grooves 4212, the first sub-grooves 4211 and second sub-grooves 4212 being connected through a third sub-grooves 4213, the third sub-grooves 4213 being connected to the middle position of the first sub-grooves 4211 and the middle position of the second sub-grooves 4212, respectively, to roughly form an I-shaped recessed groove 421, and the corresponding protruding end 416 is also an I-shaped protruding end 416. The I-shaped recessed groove 421 is adopted, and the two ends of the specific third sub-grooves 4213 are respectively connected to the middle position of the first sub-grooves 4211 and the second sub-grooves 4212, so that during injection molding, the plastic material injected into the recessed groove 421 can flow between the first sub-grooves 4211 and the second sub-grooves 4212 through the third sub-grooves 4213, ensuring uniform material flow. At the same time, the I-shaped recessed groove 421 can provide a larger heat conduction area, which is beneficial to improving the heat dissipation efficiency.

[0107] By providing the recessed groove 421 including the first sub-groove 4211, the second sub-groove 4212 and the third sub-groove 4213 connecting the first sub-groove 4211 and the second sub-groove 4212, the flow of the liquid plastic material is facilitated during injection molding, and the uniformity of injection molding is improved. At the same time, a larger contact area can be provided between the insulating sub-component 41 and the heat dissipation sub-component 42, thereby improving the heat dissipation efficiency and reducing the risk of thermal runaway and fire of the battery device 100.

[0108] In some embodiments, a recessed groove 421 is provided on the side of the insulating component 41 facing the heat dissipation component 42, and an extended end 416 is provided on the side of the heat dissipation component 42 facing the insulating component 41. The extended end 416 is snap-fitted or plug-fitted with the recessed groove 421 to connect the heat dissipation component 42 and the insulating component 41.

[0109] In the above-mentioned embodiment, the protruding end 416 is provided on the insulating sub-component 41, and the concave groove 421 is provided on the heat dissipation sub-component 42. Based on the same principle, the concave groove 421 can also be provided on the insulating sub-component 41, and the protruding end 416 matching the concave groove 421 can be provided on the heat dissipation sub-component 42, and the protruding end 416 of the heat dissipation sub-component 42 extends into the concave groove 421 of the insulating sub-component 41 to connect the heat dissipation sub-component 42 and the insulating sub-component 41 together.

[0110] By providing a recessed groove 421 on the insulating component 41 and providing a protruding end 416 on the heat dissipating component 42, the contact area between the heat dissipating component 42 and the insulating component 41 can be increased, the heat dissipation efficiency can be improved, and the connection strength can be improved.

[0111] According to some embodiments of the present application, the present application provides an electric device, which includes an equipment body and the above-mentioned battery device 100, and the battery device 100 is arranged in the equipment body. The above-mentioned electric device can be a vehicle 1000. Since the electric device includes any technical solution of all the above-mentioned embodiments, it has at least all the beneficial effects brought by any of the above-mentioned technical solutions, which will not be repeated here one by one.

[0112] The above description is only an optional embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the application concept of the present application, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A battery device, characterized in that: include: Box; A battery module is arranged in the box, and the battery module is provided with an output electrode; A high voltage box, wherein the high voltage box is provided with an input terminal and an output terminal, wherein the input terminal is electrically connected to the output electrode; A connector, wherein the connector is provided with a shell, and a plug-in end and a connector respectively mounted on the shell, the output end and the plug-in end are electrically connected through the connector, a heat-conducting member is provided on the connector, the heat-conducting member is thermally connected to the connector, and is insulated.

2. The battery device according to claim 1, characterized in that The heat-conducting component comprises a heat-dissipating component and an insulating component which are connected to each other. The heat-dissipating component is connected to the insulating component through heat conduction, and the insulating component is connected to the connecting component through heat conduction and is insulated.

3. The battery device according to claim 2, characterized in that: The insulating component is formed with a slot, and the connecting component is installed in the slot.

4. The battery device according to claim 3, characterized in that: The insulating component includes a bottom plate and side plates respectively arranged on opposite sides of the bottom plate. The slot is surrounded by the bottom plate and the two side plates. A protruding end extending toward the slot is arranged on one side of the side plate away from the bottom plate.

5. The battery device according to claim 4, characterized in that: The connector includes at least two copper bars, which are installed in the slots and fit the bottom plate. The number of the insulators is equal to the number of the copper bars and they are arranged in one-to-one correspondence. The extending direction of the slots is the same as the extending direction of the corresponding copper bars.

6. The battery device according to any one of claims 2 to 5, characterized in that: The insulating sub-component is made of plastic, and the heat dissipating sub-component is made of metal material.

7. The battery device according to any one of claims 2 to 5, characterized in that: A protruding end is arranged on a side of the insulating component facing the heat dissipating component, and a concave groove is arranged on a side of the heat dissipating component facing the insulating component, and the protruding end is snap-fitted with the concave groove.

8. The battery device according to claim 7, characterized in that: The recessed groove includes a first sub-groove, a second sub-groove, and a third sub-groove connecting the first sub-groove and the second sub-groove, the first sub-groove and the second sub-groove are arranged opposite to each other, and the two ends of the third sub-groove are respectively connected to the middle position of the first sub-groove and the middle position of the second sub-groove.

9. The battery device according to any one of claims 2 to 5, characterized in that: A concave groove is arranged on one side of the insulating component facing the heat dissipating component, and a protruding end is arranged on one side of the heat dissipating component facing the insulating component, and the protruding end is engaged with the concave groove.

10. The battery device according to any one of claims 2 to 5, characterized in that: The heat conducting component further comprises a heat conducting pad arranged on the heat dissipating component, a cold plate is arranged in the box body, and the heat conducting pad is heat-conductingly connected to the box body or the cold plate.

11. The battery device according to claim 10, characterized in that: The thermal pad is arranged on a side of the heat dissipation component away from the insulation component.

12. The battery device according to claim 10, characterized in that: The thermally conductive pad is an elastic thermally conductive pad.

13. The battery device according to any one of claims 2 to 5, characterized in that: The battery device further includes a conductive member, through which the output electrode and the input terminal are electrically connected.

14. An electrical device, characterized in that: The electrical equipment comprises an equipment body and the battery device according to any one of claims 1 to 13, wherein the battery device is arranged in the equipment body.

Images