Battery devices and electrical equipment

Abstract

The present application relates to a battery device and an electrical equipment, wherein the battery device comprises a box, a heat exchange mechanism, a battery module, a protective component and a drainage mechanism; the box comprises a first box and a second box, the second box cover is arranged on the first box, and defines a receiving chamber with the first box, and the first box comprises a bottom support plate; the heat exchange mechanism comprises a heat exchange member and a circulation pipe connected to each other, the heat exchange member is arranged in the receiving chamber, and the circulation pipe is at least partially located in the receiving chamber; the battery module is arranged in the receiving chamber, and the heat exchange member is thermally connected to the battery module; the protective component comprises a heat preservation member, and the heat preservation member covers at least part of the outer wall of the circulation pipe; the drainage mechanism is installed on the bottom support plate, and the drainage mechanism and the circulation pipe are arranged at intervals; wherein the heat preservation member is at least partially arranged between the drainage mechanism and the circulation pipe. The present application can improve the reliability of the battery device.

Description

Technical Field

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

[0002] Battery devices are widely used in electronic devices, such as mobile phones, laptop computers, battery cars, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and electric tools, etc.

[0003] Battery devices generally require a sealed design, but condensed water generated inside the battery device can easily affect the reliability of the battery device. Summary of the invention

[0004] In view of the above problems, the present application provides a battery device and an electrical equipment, which can improve the reliability of the battery device.

[0005] In the first aspect, the present application proposes a battery device, including a box body, a heat exchange mechanism, a battery module, a protective component and a drainage mechanism; the box body includes a first box body and a second box body, the second box body cover is arranged on the first box body, and defines a accommodating cavity with the first box body, and the first box body includes a bottom support plate; the heat exchange mechanism includes a heat exchange component and a circulation pipe connected to each other, the heat exchange component is arranged in the accommodating cavity, and the circulation pipe is at least partially located in the accommodating cavity; the battery module is arranged in the accommodating cavity, and the heat exchange component is thermally connected to the battery module; the protective component includes a thermal insulation component, and the thermal insulation component covers at least a part of the outer wall of the circulation pipe; the drainage mechanism is installed on the bottom support plate, and the drainage mechanism and the circulation pipe are spaced apart; wherein the thermal insulation component is at least partially arranged between the drainage mechanism and the circulation pipe.

[0006] In the solution of the embodiment of the present application, the battery device includes a box, a heat exchange mechanism, a battery module, a protective component and a drainage mechanism. On the one hand, the thermal insulation component can protect the circulation pipe, prevent the generation of condensed water on the circulation pipe, and reduce the situation where condensed water on the circulation pipe drips on the drainage mechanism; on the other hand, the thermal insulation component can also prevent the condensed water in the circulation pipe from dripping directly onto the bottom support plate, or even dripping into the drainage mechanism. By arranging the thermal insulation component to block the drainage mechanism and the circulation pipe, the air tightness of the box can be improved. Thereby improving the stability of the drainage mechanism, and then improving the air tightness of the box and the reliability of the battery device.

[0007] In some embodiments, the circulation pipeline includes a main pipeline and a connecting joint, the connecting joint connects the main pipeline and the heat exchange component, and the thermal insulation component covers at least a portion of the outer wall of the connecting joint.

[0008] In these embodiments, the heat preservation member protects the connection joint from condensed water, which can effectively reduce the situation where the drainage mechanism of the battery device is abnormally opened, thereby improving the airtightness and reliability of the battery device.

[0009] In some embodiments, the thermal insulation member is disposed around the outer circumference of the connection joint.

[0010] In these embodiments, the heat-insulating member is disposed around the outer circumference of the connecting joint, which can improve its protection effect against condensed water.

[0011] In some embodiments, the insulation element comprises insulation foam.

[0012] In these embodiments, the thermal insulation foam has good thermal insulation capability and good protection effect against condensation water generated on the circulation pipe.

[0013] In some embodiments, the protection assembly further includes a flow guide, which is disposed on a side of the drainage mechanism close to the flow pipe.

[0014] In these embodiments, by providing a guide member, condensed water can be effectively prevented from dripping directly onto the drain mechanism, thereby reducing the situation where the drain mechanism is abnormally opened, and further improving the reliability of the battery device.

[0015] In some embodiments, the orthographic projection area of ​​the flow guide on the bottom support plate is larger than the orthographic projection area of ​​the drainage mechanism on the bottom support plate.

[0016] In these embodiments, the guide member is larger in the lateral direction relative to the drainage mechanism, so that the protection effect of the guide member can be more comprehensive.

[0017] In some embodiments, the guide member includes a first end portion and a first outer edge connected to each other, and the first outer edge extends obliquely relative to the first end portion toward a direction close to the bottom support plate.

[0018] In these embodiments, the guide member is shaped like an umbrella, which has a better guide effect.

[0019] In some embodiments, the flow guide includes a hydrophobic structure.

[0020] In these embodiments, the hydrophobic structure has good waterproof and diversion effects, and has a good protective effect on the drainage mechanism.

[0021] In some embodiments, the protective assembly further comprises a first water absorbing member disposed on the bottom support plate, and the first water absorbing member is at least partially disposed on the peripheral side of the drainage mechanism.

[0022] In these embodiments, the first water absorbent member can absorb condensed water flowing to the periphery of the drainage mechanism, thereby reducing the probability of the airtightness failure of the battery device due to the condensed water opening the drainage mechanism, and further improving the reliability of the battery device.

[0023] In some embodiments, the first absorbent member is formed with a clearance groove, and the drainage mechanism is at least partially located in the clearance groove.

[0024] In these embodiments, the drainage mechanism is at least partially located in the clearance groove, so that the first water absorbent member can cover the periphery of the drainage mechanism to a greater extent, thereby improving the protective effect of the first water absorbent member on the drainage mechanism.

[0025] In some embodiments, the first absorbent member comprises absorbent foam.

[0026] In these embodiments, the water-absorbing foam has a good water-absorbing effect to gather condensed water and reduce the amount of condensed water that can flow in the box.

[0027] In some embodiments, the protection component also includes a second water absorbent member arranged on the bottom support plate, the heat exchange member includes a heat exchange plate and a current collector located at the end of the heat exchange plate, and the second water absorbent member is arranged opposite to the current collector in a direction perpendicular to the plane where the bottom support plate is located.

[0028] In these embodiments, the second water absorbent member is disposed below the current collector to more efficiently absorb the condensed water generated by the current collector, thereby reducing the condensed water flowing to the position of the drainage mechanism and improving the protective effect.

[0029] In a second aspect, the present application provides an electrical device, comprising a battery device according to any one of the above-mentioned first aspect embodiments, wherein the battery device is used to provide electrical energy.

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

[0032] Figure 1 is a structural schematic diagram of a vehicle provided by an embodiment of the present application;

[0033] Figure 2 is a schematic structural diagram of a battery device provided in one embodiment of the present application;

[0034] Figure 3 is a structural schematic diagram of a battery module provided in one embodiment of the present application;

[0035] Figure 4 is a schematic diagram of an exploded structure of a battery cell provided in one embodiment of the present application;

[0036] Figure 5 is a side view of the interior of a battery device provided by an embodiment of the present application;

[0037] Figure 6It is a three-dimensional structural schematic diagram of a flow pipe and a heat preservation component in a battery device provided in an embodiment of the present application;

[0038] Figure 7 is one of the partial cross-sectional views of a battery device provided in one embodiment of the present application;

[0039] Figure 8 This is a second partial cross-sectional view of a battery device provided in one embodiment of the present application;

[0040] Fig. 9 This is a third partial cross-sectional view of a battery device provided in one embodiment of the present application;

[0041] Fig.10 is a cross-sectional view of a flow guide in a battery device provided in one embodiment of the present application;

[0042] Fig.11 is a top view of a bottom support plate, a protective assembly and a drainage mechanism in a battery device provided in an embodiment of the present application;

[0043] Fig.12 It is an enlarged top view of the bottom support plate, the first water absorbing member and the liquid discharge mechanism in the battery device provided in one embodiment of the present application;

[0044] Fig.13 It is a partial side cross-sectional view of a bottom support plate and a second water absorbing member in a battery device provided in one embodiment of the present application.

[0045] The drawings are not necessarily drawn to scale.

[0046] Description of reference numerals:

[0047] 1000. Vehicles;

[0048] 100, battery device; 110, controller; 120, motor;

[0049] 200. Battery module;

[0050] 10. Battery cell; 11. Housing; 12. Electrode assembly; 13. End cap assembly;

[0051] 300, box body; 301, first box body; 3011, bottom support plate; 302, second box body; 30, accommodating chamber;

[0052] 4. heat exchange mechanism; 41. heat exchange element; 412. current collector; 42. circulation pipeline; 421. main pipeline; 422. connection joint;

[0053] 5. Protective component; 51. Insulating component; 52. Flow guide component; 521. First end portion; 522. First outer edge; 53. First water absorbing component; 531. Displacement groove; 54. Second water absorbing component;

[0054] 6. Drainage mechanism. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0056] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0057] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places 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.

[0058] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0059] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0060] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0061] The term “plurality” used in this application refers to two or more (including two).

[0062] At present, from the perspective of market development, the application of battery devices is becoming more and more extensive. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of battery devices, the market demand is also constantly expanding.

[0063] In the related art, battery devices have increasingly higher safety requirements. For battery devices with inverted battery cells, in order to prevent the coolant and electrolyte inside the battery device from leaking and being unable to be discharged, resulting in abnormal insulation of the battery device, the bottom plate of the battery device is designed with a drain valve. When coolant leaks or other liquids seep out of the battery device, these liquids are discharged in time to prevent damage to the inside of the battery device or cause safety hazards.

[0064] Battery devices need to operate stably for a long time. Good airtightness can protect the battery device from the influence of the external environment, such as moisture and dust, during long-term use, thereby extending the service life. Water vapor will be generated during the use of the battery device, and condensed water will be generated after the water vapor is liquefied. Under a certain amount of condensed water, the drain valve will also open abnormally, causing the battery device to fail to be airtight, resulting in reduced reliability of the battery device.

[0065] Based on the above problems, an embodiment of the present application provides a battery device, which includes a housing, a heat exchange mechanism, a battery module, a protective assembly, and a drainage mechanism. On the one hand, the thermal insulation component can protect the circulation pipe, prevent the generation of condensed water on the circulation pipe, and reduce the situation where condensed water on the circulation pipe drips onto the drainage mechanism; on the other hand, the thermal insulation component can also prevent the condensed water in the circulation pipe from dripping directly onto the bottom support plate, or even dripping into the drainage mechanism. By arranging the thermal insulation component to block the drainage mechanism and the circulation pipe, the air tightness of the housing can be improved. Thereby, the stability of the drainage mechanism is improved, and then the air tightness of the housing and the reliability of the battery device are improved.

[0066] The technical solutions described in the embodiments of the present application are applicable to battery devices and electrical equipment using the battery devices.

[0067] Electrical equipment may be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, electric tools, and the like. Vehicles may be fuel vehicles, gas vehicles, or new energy vehicles, and new energy vehicles may be pure electric vehicles, hybrid vehicles, or extended-range vehicles, and the like; spacecraft include airplanes, rockets, space shuttles, and spacecraft, and the like; electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, and the like; electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, and the like. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical equipment.

[0068] The battery device 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 device mentioned in the present application may include a battery module or a battery pack. The battery device 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.

[0069] In some embodiments, the battery device can be used in an energy storage device, which can include an energy storage container, an energy storage cabinet, etc. The battery device is used to store or provide electrical energy.

[0070] It should be understood that the technical solutions described in the embodiments of the present application are not limited to the battery devices and electrical equipment described above, but can also be applied to all battery devices including a box and electrical equipment using the battery devices. However, for the sake of simplicity, the following embodiments are described using electric vehicles as examples.

[0071] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle 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 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 110 and a motor 120, and the controller 110 is used to control the battery to power the motor 120, for example, for starting, navigating and driving the vehicle 1000.

[0072] 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.

[0073] Figure 2 A schematic structural diagram of a battery device according to an embodiment of the present application is shown.

[0074] 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 10, and the plurality of battery cells 10 are connected in series, in parallel or in mixed connection through a busbar.

[0075] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells 10 .

[0076] As an example, the battery cell assembly may be a battery module 200, and the battery module 200 is formed by arranging and fixing a plurality of battery cells 10 to form an independent module. As an example, the battery module 200 may be formed by bundling a plurality of battery cells 10 by a cable tie.

[0077] In some embodiments, the battery device 100 may be a battery pack, which includes a case 300 and one or more battery cell assemblies, wherein the battery cell assemblies are housed in the case 300 .

[0078] As an example, the battery cell assembly may be a battery module 200 , and the battery cell assembly may be accommodated in the box body 300 by fixing the battery module 200 in the box body 300 .

[0079] As an example, the battery cell assembly may also be accommodated in the case 300 by directly fixing the plurality of battery cells 10 to the case 300 .

[0080] As an example, the box 300 may include a first box 301 and a second box 302. The first box 301 and the second box 302 are buckled together to form a closed space inside the box 300 to accommodate the battery monomer assembly. The closed here means covered or closed, which can be sealed or unsealed. The first box 301 can be a top cover or a bottom plate.

[0081] As an example, if the first box body 301 is disposed below the second box body 302, it can also be called a lower box body, and the second box body 302 is called an upper box body. The lower box body may include a bottom support plate, and the upper box body may include a top cover. The box body 300 also includes a frame connecting the bottom support plate and the top cover.

[0082] In some embodiments, the box 300 may be a part of the chassis structure of the vehicle 1000. For example, part of the box 300 may become at least a part of the floor of the vehicle 1000, or part of the box 300 may become at least a part of the cross beam and longitudinal beam of the vehicle 1000.

[0083] Figure 3 A schematic structural diagram of a battery module according to an embodiment of the present application is shown.

[0084] In some embodiments, Figure 2 and Figure 3 As shown, there are multiple battery cells 10, and the multiple battery cells 10 are first connected in series, parallel or mixed to form a battery module 200. The multiple battery modules 200 are then connected in series, parallel or mixed to form a whole, and are accommodated in the box 300.

[0085] The multiple battery cells 10 in the battery module 200 can be electrically connected through a busbar component to achieve parallel connection, series connection, or mixed connection of the multiple battery cells 10 in the battery module 200 .

[0086] In the present application, the battery cell 10 may include a lithium-ion battery cell, a sodium-ion battery cell, a magnesium-ion battery cell, etc., which is not limited in the embodiments of the present application.

[0087] Figure 4 A schematic diagram of the exploded structure of a battery cell according to an embodiment of the present application is shown.

[0088] The battery cell 10 refers to the smallest unit constituting the battery and includes a housing 11 , an electrode assembly 12 and an end cap assembly 13 .

[0089] The electrode assembly 12 is a component in the battery cell 10 where electrochemical reactions occur. One or more electrode assemblies 12 may be included in the housing 11. The electrode assembly 12 is mainly formed by winding or stacking pole sheets, which are divided into positive pole sheets and negative pole sheets, and a separator is usually provided between the positive pole sheet and the negative pole sheet. The parts of the positive pole sheet and the negative pole sheet with active materials constitute the electrode body, and the parts of the positive pole sheet and the negative pole sheet without active materials each constitute a pole ear. The positive pole ear and the negative pole ear may be located together at one end of the electrode body or respectively at both ends of the electrode body. During the charge and discharge process of the battery cell, the positive active material and the negative active material react with the electrolyte, and the pole ears connect the electrode terminals to form a current loop.

[0090] As an example, the battery cell 10 can be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell or a battery cell of other shapes. The prismatic battery cell includes a square shell battery cell, a blade-shaped battery cell, a polygonal battery, such as a hexagonal battery, etc. There is no special limitation in the present application.

[0091] The housing 11 and the end cap assembly 13 may be independent components, and one or more openings may be provided on the housing 11, and one or more end cap assemblies 13 cover the openings to form the internal environment of the battery cell 10. Optionally, the end cap assembly 13 and the housing 11 may be integrated. Optionally, the end cap assembly 13 and the housing 11 may form a common connection surface before other components are inserted into the housing, and when the interior of the housing 11 needs to be encapsulated, the end cap assembly 13 covers the housing 11.

[0092] In some embodiments, at least one electrode terminal is disposed on the end cap assembly 13, and the electrode terminal is electrically connected to the electrode tab. The electrode terminal can be directly connected to the electrode tab, or indirectly connected to the electrode tab through a current collecting member. In addition, the electrode terminal can be disposed on the housing 11 in addition to the end cap assembly 13.

[0093] See also Figures 5 to 8 , Figure 5 A side view of the interior of a battery device provided by an embodiment of the present application is shown; Figure 6 A schematic diagram of the three-dimensional structure of a flow pipe and a heat preservation component in a battery device provided in an embodiment of the present application is shown; Figure 7 One of the partial cross-sectional views of a battery device provided by an embodiment of the present application is shown; Figure 8 A second partial cross-sectional view of a battery device provided in an embodiment of the present application is shown.

[0094] Reference Figures 2 to 8 In the first aspect, the present application proposes a battery device 100, which includes a box 300, a heat exchange mechanism 4, a battery module 200, a protective component 5 and a drainage mechanism 6; the box 300 includes a first box 301 and a second box 302, the second box 302 is covered on the first box 301, and defines a receiving cavity 30 with the first box 301, and the first box 301 includes a bottom support plate 3011; the heat exchange mechanism 4 includes a heat exchange member 41 and a flow pipe 42 connected to each other The heat exchange component 41 is arranged in the accommodating cavity 30, and the circulation pipeline 42 is at least partially located in the accommodating cavity 30; the battery module 200 is arranged in the accommodating cavity 30, and the heat exchange component 41 is thermally connected to the battery module 200; the protective component 5 includes a thermal insulation component 51, and the thermal insulation component 51 covers at least a part of the outer wall of the circulation pipeline 42; the drainage mechanism 6 is installed on the bottom support plate 3011, and the drainage mechanism 6 and the circulation pipeline 42 are arranged at intervals; wherein, the thermal insulation component 51 is at least partially arranged between the drainage mechanism 6 and the circulation pipeline 42.

[0095] The main function of the heat exchange mechanism 4 is to manage the heating and heat dissipation of the battery device 100. It can remove the heat generated by the battery by heat conduction, heat convection and heat radiation, ensuring that the battery operates within a suitable temperature range, thereby extending the battery life and improving the battery performance. The embodiment of the present application is illustrated by a liquid-cooled heat exchange mechanism, which removes heat by circulating coolant in the heat exchange tube. This heat exchange method has high heat dissipation efficiency and good temperature uniformity.

[0096] The heat exchanger 41 is thermally connected to the battery module 200, which can be understood as: a portion of the heat exchanger 41 is directly attached to or abutted against the battery module 200; or the heat exchanger 41 and the battery module 200 are spaced apart, and the heat exchanger 41 is connected to the battery module 200 via a heat-conducting medium, which can be air or metal or heat-conducting glue, etc. The heat exchanger 41 is mainly responsible for transferring heat from the battery module 200 to the heat exchange medium. Optionally, the heat exchanger 41 can be in thermal contact with the outer surface of the battery cell 10 in the battery module 200, or can be thermally connected to a conduit component connecting multiple battery cells 10, which is not specifically limited in the present application. Exemplarily, the heat exchanger 41 may include a heat exchange plate.

[0097] When the battery device 100 leaks coolant or other liquid seeps out, the drain mechanism 6 drains the liquid in time to prevent the battery device 100 from being damaged or causing safety hazards. The drain mechanism 6 may include components such as a valve body, a valve cover, a hygroscopic expansion body (or similar materials), and a guide plate. Parameters such as the material, shape, and size of these components can be adaptively selected and designed according to factors such as the type of battery device 100, the working environment, and the drainage requirements. The drain mechanism 6 is in a closed state when not in use. Exemplarily, the drain mechanism 6 may include a drain valve.

[0098] The protective assembly 5 as a whole can reduce the situation where the drainage mechanism 6 is abnormally opened due to the accumulation of condensed water inside the accommodating chamber 30, for example, the drainage mechanism 6 is opened during the driving of the vehicle 1000. The abnormal influence of condensed water on the drainage mechanism 6 can be reduced by preventing the generation of condensed water, preventing the condensed water from directly dripping on the drainage mechanism 6, guiding the condensed water, and absorbing the condensed water.

[0099] The circulation pipe 42 stores and circulates a heat exchange medium, which has a large difference in temperature from the ambient temperature in the accommodating chamber 30, and is prone to generate condensed water. The thermal insulation component 51 covers at least part of the outer wall of the circulation pipe 42. The thermal insulation component 51 can block at least part of the circulation pipe 42 from direct contact with the environment in the accommodating chamber 30, thereby reducing the generation of condensed water on the circulation pipe 42, or can also prevent condensed water from dripping directly from the outer wall of the circulation pipe 42 onto the drainage mechanism 6. The material of the thermal insulation component 51 can be selected from materials with a small thermal conductivity coefficient to reduce heat transfer. Exemplarily, the thermal insulation component 51 can be thermal insulation foam or flannel tape. The flannel tape can work for a long time in a high temperature environment, and its material properties can effectively prevent the penetration of water and moisture and maintain the viscosity of the tape.

[0100] In the solution of the embodiment of the present application, the battery device 100 includes a box 300, a heat exchange mechanism 4, a battery module 200, a protective component 5 and a drainage mechanism 6. On the one hand, the heat preservation member 51 can protect the circulation pipe 42, prevent the generation of condensed water on the circulation pipe 42, and reduce the situation where the condensed water on the circulation pipe 42 drips on the drainage mechanism 6; on the other hand, the heat preservation member 51 can also prevent the condensed water of the circulation pipe 42 from directly dripping onto the bottom support plate 3011, or even dripping into the drainage mechanism 6. By setting the heat preservation member 51 to block between the drainage mechanism 6 and the circulation pipe 42, the air tightness of the box 300 can be improved. Thereby, the stability of the drainage mechanism 6 is improved, and then the air tightness of the box 300 and the reliability of the battery device 100 are improved.

[0101] Combined with reference Figure 5 and Figure 6 In some embodiments, the circulation pipeline 42 includes a main pipeline 421 and a connecting joint 422 , the connecting joint 422 connects the main pipeline 421 and the heat exchange element 41 , and the insulation element 51 covers at least a portion of the outer wall of the connecting joint 422 .

[0102] The main pipe 421 extends in the accommodating chamber 30 to transmit the heat exchange medium, and the connecting joint 422 is connected between the main pipe 421 and the heat exchange element 41, so that the heat exchange medium flows between the heat exchange element 41 and the main pipe 421. In addition to the protection of the main pipe 421 against condensed water, a heat preservation member 51 is also provided at the connecting joint 422 for protection.

[0103] The drainage mechanism 6 can be set at the four corners of the bottom support plate 3011. Similarly, in order to improve space utilization, the connecting joint 422 can also be set at the corner position of the edge of the box body 300. Therefore, it is easy for the condensed water of the connecting joint 422 to drip onto the drainage mechanism 6, causing the drainage mechanism 6 to open abnormally.

[0104] In these embodiments, the heat preservation member 51 protects the connection joint 422 from condensation water, which can effectively reduce the abnormal opening of the drainage mechanism 6 of the battery device 100 , thereby improving the airtightness and reliability of the battery device 100 .

[0105] Reference Figure 6 and Figure 7 In some embodiments, the thermal insulation member 51 is disposed around the outer circumference of the connecting joint 422 .

[0106] The heat preservation member 51 is arranged around the outer periphery of the connection joint 422, which can be understood as follows: the cross section of the heat preservation member 51 on the plane perpendicular to the axis of the connection joint 422 can be a closed ring or a semi-enclosed ring, and the closed ring has a 360° no-dead-angle protection effect on the connection joint 422, preventing condensed water from being generated on the outside of the connection joint 422. When it is in a semi-enclosed shape, its opening faces the direction away from the drain mechanism 6, which can also effectively protect or prevent condensed water from dripping directly on the drain mechanism 6. Along the axial direction of the connection joint 422, the length of the heat preservation member 51 can be greater than the length of the connection joint 422.

[0107] In these embodiments, the heat-insulating member 51 is disposed around the outer circumference of the connecting joint 422 to improve its protection effect against condensed water.

[0108] In some embodiments, the insulation element comprises insulation foam.

[0109] Exemplarily, the thermal insulation foam may be made of one or more materials such as ethylene-vinyl acetate copolymer, pearl cotton, polyester fiber, etc. The specific material of the thermal insulation foam may be selected according to specific application requirements and environmental conditions.

[0110] In these embodiments, the thermal insulation foam has good thermal insulation capability and good protection effect against condensation water generated on the circulation pipe.

[0111] Fig. 9 A third partial cross-sectional view of a battery device provided in one embodiment of the present application is shown.

[0112] Reference Fig. 9 In some embodiments, the protection component 5 further includes a flow guide 52 , which is disposed on a side of the drainage mechanism 6 close to the flow pipe 42 .

[0113] The guide member 52 may include a waterproof material or a hydrophobic material. If condensed water drips from top to bottom toward the drain mechanism 6 , the guide member 52 may block the condensed water and guide the condensed water to a position away from the drain mechanism 6 or to a position of a water-absorbing material.

[0114] In these embodiments, by providing the guide member 52, it is possible to effectively prevent condensed water from dripping directly onto the drainage mechanism 6, for example, to prevent condensed water from dripping from the connecting joint 422 or other components above the drainage mechanism 6, thereby reducing the abnormal opening of the drainage mechanism 6 and further improving the reliability of the battery device 100.

[0115] In addition, the guide member 52 may also include a hydrophilic material to first absorb the dripping condensed water, and then discharge the absorbed condensed water to the surrounding side of the drainage mechanism 6 through the structure of the guide member 52. Optionally, a water-absorbing material may be provided on the surrounding side of the drainage mechanism 6 for the condensed water.

[0116] In some embodiments, the orthographic projection area of ​​the flow guide 52 on the bottom support plate 3011 is larger than the orthographic projection area of ​​the liquid discharge mechanism 6 on the bottom support plate 3011 .

[0117] The orthographic projection direction of the flow guide 52 or the liquid discharge mechanism 6 on the substrate can be referred to as Fig. 9 Optionally, the orthographic projection of the liquid discharge mechanism 6 on the bottom support plate 3011 is located within the orthographic projection of the flow guide member 52 on the bottom support plate 3011, which can improve the protective effect of the flow guide member 52 on the liquid discharge mechanism 6.

[0118] In these embodiments, the guide member 52 is larger in the lateral direction relative to the drainage mechanism 6 , so that the protection effect of the guide member 52 can be more comprehensive.

[0119] Fig.10 A cross-sectional view of a flow guide in a battery device provided in an embodiment of the present application is shown.

[0120] Reference Fig.10 In some embodiments, the guide member 52 includes a first end portion 521 and a first outer edge 522 that are connected to each other, and the first outer edge 522 extends obliquely relative to the first end portion 521 toward a direction close to the bottom support plate 3011 .

[0121] Along the Z-axis direction, the first end portion 521 is located above the first outer edge 522 , and the first outer edge 522 extends obliquely downward along the periphery of the first end portion 521 , so that the guide member 52 is arranged in an umbrella shape.

[0122] In these embodiments, the guide member 52 is shaped like an umbrella, which has a better guide effect.

[0123] In some embodiments, the flow guide 52 includes a hydrophobic structure.

[0124] The hydrophobic structure may be made of one or more fluorine-containing polymers such as polytetrafluoroethylene (PTFE), epoxy resin, fluorocarbon resin, etc., which has good waterproof properties and can effectively prevent condensed water from passing through the guide member 52 and falling into the drainage mechanism 6.

[0125] In these embodiments, the hydrophobic structure has good waterproof and diversion effects, can absorb dripping condensed water and divert it to the periphery of the drainage mechanism 6 through the internal structure, and has a good protective effect on the drainage mechanism 6.

[0126] Fig.11 A top view of a bottom support plate, a protective assembly and a drainage mechanism in a battery device provided in an embodiment of the present application is shown.

[0127] Reference Fig.11 In some embodiments, the protective component 5 further includes a first water absorbing member 53 disposed on the bottom support plate 3011 , and the first water absorbing member 53 is at least partially disposed on the peripheral side of the drainage mechanism 6 .

[0128] The first water-absorbing member 53 can be a water-absorbing material such as a sponge or a water-absorbing resin. As long as it is a water-absorbing material that can absorb condensed water, it can be used as the water-absorbing material provided in the embodiment of the present application, and no examples are given here. Optionally, the first water-absorbing member 53 may include water-absorbing foam. The water-absorbing foam may be a sponge foam or a polyethylene foam, or may be a melamine foam. The water-absorbing foam has a good water-absorbing effect, so as to gather condensed water and reduce the amount of condensed water that can flow in the box.

[0129] Exemplarily, the first water absorbent member 53 may be melamine foam, which has the advantages of good flame retardancy, high heat stability and aging resistance, and light weight and energy saving.

[0130] In these embodiments, the first water absorbent member 53 can absorb condensed water flowing to the periphery of the drainage mechanism 6 , thereby reducing the probability of the airtightness failure of the battery device 100 due to the condensed water opening the drainage mechanism 6 , and further improving the reliability of the battery device 100 .

[0131] Fig.12 An enlarged top view of the bottom support plate, the first water absorbing member and the liquid discharge mechanism in the battery device provided in one embodiment of the present application is shown.

[0132] Reference Fig.12 In some embodiments, the first water absorbing member 53 is formed with a clearance groove 531 , and the drainage mechanism 6 is at least partially located in the clearance groove 531 .

[0133] The shape of the clearance groove 531 can be designed to be adaptive to the contour of the peripheral side of the drainage mechanism 6 .

[0134] In these embodiments, the drainage mechanism 6 is at least partially located in the clearance groove 531 , so that the first water absorbent member 53 can cover the circumference of the drainage mechanism 6 to a greater extent, thereby improving the protective effect of the first water absorbent member 53 on the drainage mechanism 6 .

[0135] Exemplarily, the four corners of the bottom support plate can be provided with a drainage mechanism 6, and the first water absorbing member 53 can be provided corresponding to the drainage mechanism 6. The opening of the clearance groove 531 can face the side wall of the box body 300 close to the first water absorbing member 53.

[0136] Fig.13 A partial side cross-sectional view of a bottom support plate and a second water absorbing member in a battery device provided in an embodiment of the present application is shown.

[0137] Combined with reference Fig.11 and Fig.13 In some embodiments, the protective component 5 also includes a second water absorbent member 54 disposed on the bottom support plate 3011, and the heat exchange element 41 includes a heat exchange plate and a current collector 412 located at the end of the heat exchange plate. Along the direction perpendicular to the plane where the bottom support plate 3011 is located, the second water absorbent member 54 and the current collector 412 are arranged opposite to each other.

[0138] There can be multiple heat exchange plates, each of which can be arranged in close contact with the battery cell 10 to conduct the heat of the battery cell 10. The current collector 412 can be used as an intermediate component connecting the heat exchange plate and the circulation pipe 42, so that the heat absorbed by the heat exchange plate can be transferred through the heat exchange medium in the circulation pipe 42. Multiple current collectors 412 can be connected in series through the circulation pipe 42. During the use of the battery device 100, the current collector 412 is the main structure for heat exchange and is prone to condensation. Exemplarily, in the embodiment of the present application, the heat exchange plate can be arranged vertically, and multiple current collectors 412 are arranged horizontally.

[0139] In these embodiments, the second absorbent member 54 is disposed below the current collector 412 to more efficiently absorb the condensed water generated by the current collector 412, thereby reducing the condensed water flowing to the position of the drain mechanism 6 and improving the protective effect. Optionally, the second absorbent member 54 may also be absorbent foam. The material of the second absorbent member 54 may be the same as that of the first absorbent member 53, which will not be described in detail here.

[0140] In a second aspect, an embodiment of the present application provides an electric device, comprising the battery device 100 of any embodiment of the first aspect. The battery device 100 is used to provide electric energy for the electric device.

[0141] The power-consuming device may be any of the aforementioned devices or systems using the battery device 100 .

[0142] See also Figures 1 to 13According to some embodiments of the present application, the present application provides a battery device 100, including a box body 300, a heat exchange mechanism 4, a battery module 200, a protective component 5 and a drainage mechanism 6; the box body 300 includes a first box body 301 and a second box body 302, the second box body 302 is covered on the first box body 301, and defines a receiving chamber 30 with the first box body 301, and the first box body 301 includes a bottom support plate 3011; the heat exchange mechanism 4 includes a heat exchange member 41 and a flow pipe 42 connected to each other, the heat exchange member 41 is arranged in the receiving chamber 30, and the flow pipe 42 is at least partially located in the receiving chamber 30; the battery module 200 is arranged in the receiving chamber 30, and the heat exchange member 41 is thermally connected to the battery module 200; the protective component 5 includes a heat insulation member 51, and the heat insulation member 51 covers at least a part of the outer wall of the flow pipe 42; the drainage mechanism 6 is installed on the bottom support plate 3011, and the drainage mechanism 6 and the flow pipe 42 are arranged at intervals. The circulation pipe 42 includes a main pipe 421 and a connecting joint 422, the connecting joint 422 connects the main pipe 421 and the heat exchanger 41, and the heat-insulating member 51 covers at least part of the outer wall of the connecting joint 422. The heat-insulating member 51 is at least partially arranged between the drainage mechanism 6 and the circulation pipe 42. The protection component 5 also includes a flow guide 52, which is arranged on the side of the drainage mechanism 6 close to the circulation pipe 42. The protection component 5 also includes a first water-absorbing member 53 arranged on the bottom support plate 3011, and the first water-absorbing member 53 is at least partially arranged on the peripheral side of the drainage mechanism 6. The protection component 5 also includes a second water-absorbing member 54 arranged on the bottom support plate 3011. The heat exchanger 41 includes a heat exchange plate and a current collector 412 located at the end of the heat exchange plate. The second water-absorbing member 54 is arranged opposite to the current collector 412 in a direction perpendicular to the plane where the bottom support plate 3011 is located.

[0143] In these embodiments, firstly, for the positions where condensed water is easily generated (including the connection joint 422 and the current collector 412), a heat-insulating member 51 and a second water-absorbing member 54 are respectively provided for protection; secondly, for the generated condensed water, a guide member 52 is designed above the drain mechanism 6 to guide the condensed water above the drain mechanism 6 to the surrounding of the drain mechanism 6; thirdly, for the condensed water flowing into the surrounding and internal of the drain valve, a water-absorbing foam is designed to absorb the condensed water. The condensed water is protected from multiple aspects, the protection effect is more comprehensive, and the reliability of the battery device 100 is better.

[0144] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that: include: The box body comprises a first box body and a second box body, wherein the second box body cover is disposed on the first box body and defines a receiving cavity with the first box body, and the first box body comprises a bottom support plate; The heat exchange mechanism comprises a heat exchange element and a flow pipe connected to each other, wherein the heat exchange element is arranged in the accommodating cavity, and the flow pipe is at least partially located in the accommodating cavity; A battery module is disposed in the accommodating cavity, and the heat exchange element is thermally connected to the battery module; A heat-insulating member, the heat-insulating member covering at least a portion of an outer wall of the flow pipe; A liquid discharge mechanism is installed on the bottom support plate, and the liquid discharge mechanism is spaced apart from the flow pipe; Wherein, the heat-insulating component is at least partially arranged between the drainage mechanism and the circulation pipeline.

2. The battery device according to claim 1, characterized in that: The circulation pipeline includes a main pipeline and a connecting joint, the connecting joint connects the main pipeline and the heat exchange component, and the heat insulation component covers at least a part of the outer wall of the connecting joint.

3. The battery device according to claim 2, characterized in that: The heat-insulating component is arranged around the outer circumference of the connecting joint.

4. The battery device according to claim 1, characterized in that: The thermal insulation component includes thermal insulation foam.

5. The battery device according to claim 1, characterized in that: The battery device further comprises a flow guide, which is arranged on a side of the drainage mechanism close to the flow pipe.

6. The battery device according to claim 5, characterized in that: The orthographic projection area of ​​the flow guide member on the bottom support plate is larger than the orthographic projection area of ​​the liquid discharge mechanism on the bottom support plate.

7. The battery device according to claim 5, characterized in that: The guide member includes a first end portion and a first outer edge connected to each other, and the first outer edge extends obliquely relative to the first end portion toward a direction close to the bottom support plate.

8. The battery device according to claim 5, characterized in that: The flow guide comprises a hydrophobic structure.

9. The battery device according to any one of claims 1 to 8, characterized in that: The battery device further comprises a first water absorbing member arranged on the bottom supporting plate, wherein the first water absorbing member is at least partially arranged on the peripheral side of the liquid discharge mechanism.

10. The battery device according to claim 9, characterized in that: The first water absorbing member is formed with a clearance groove, and the liquid discharge mechanism is at least partially located in the clearance groove.

11. The battery device according to claim 9, characterized in that: The first water-absorbing component includes water-absorbing foam.

12. The battery device according to any one of claims 1 to 8, characterized in that: The battery device also includes a second water absorbing member arranged on the bottom support plate, the heat exchange member includes a heat exchange plate and a current collector located at the end of the heat exchange plate, and the second water absorbing member is arranged opposite to the current collector in a direction perpendicular to the plane where the bottom support plate is located.

13. An electrical equipment, characterized in that: A battery device comprising any one of claims 1 to 12, wherein the battery device is used to provide electrical energy.

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