Battery device and electric equipment

Abstract

The utility model discloses a battery device and electric equipment, the battery device comprises a box body and a battery monomer arranged in the box body, the box body comprises an upper cover and a bottom plate which are mutually covered, the bottom plate is provided with a mounting hole, a drain valve is arranged at the mounting hole, the drain valve comprises a valve body and a protective cover, the protective cover covers the valve body, the protective cover is provided with a liquid outlet, and the liquid outlet is communicated with the upper cover and the bottom plate. The protective cover faces the outer side of the box body. According to the battery device, the valve body arranged in the mounting hole can be well protected, and the risk that the normal drainage function of the drainage valve is influenced due to collision is reduced.

Description

Technical Field

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

[0002] In the related art, a drain valve is installed at the bottom of the battery box. When the battery device causes coolant leakage under harsh working conditions, the coolant can be discharged from the battery device through the drain valve to reduce the risk of high-voltage short circuit caused by coolant leakage. However, the drain valve is easily bumped during use and there is a risk of easy damage. Utility Model Content

[0003] The main purpose of the present application is to provide a battery device and electrical equipment, aiming to solve the current technical problem that the drain valve is easily damaged, affecting the normal drain function of the battery device.

[0004] To achieve the above-mentioned purpose, according to some embodiments of the present application, the present application provides a battery device, including a box body and a battery cell arranged in the box body, the box body includes an upper cover and a bottom plate covering each other, the bottom plate is provided with a mounting hole, and a drain valve is provided at the mounting hole, the drain valve includes a valve body and a protective cover, the protective cover is covered on the valve body, the protective cover is provided with a liquid outlet, and the protective cover is arranged toward the outside of the box body.

[0005] By arranging a protective cover on the valve body, which is covered by the valve body, a liquid outlet is arranged on the protective cover, and the protective cover is arranged on the outside of the box body, it can play a good protective role for the valve body arranged in the mounting hole, and reduce the risk of the drain valve being affected by bumps and affecting the normal drain function.

[0006] In some embodiments, the protective cover includes a cover plate and a side panel surrounding the cover plate, the side panel is connected to the valve body, and the cover plate is provided with a liquid outlet.

[0007] The protective cover is arranged as a cover plate and a side panel is arranged around the outer edge of the cover plate, the side panel is connected to the valve body to install the protective cover on the valve body, and a liquid outlet is arranged on the cover plate to realize the normal liquid discharge function of the liquid discharge valve.

[0008] In some embodiments, the cover plate includes a plate body and connecting ribs, the connecting ribs connect the plate body and the side panels, and the liquid outlet is arranged between the plate body, the connecting ribs and the side panels.

[0009] By configuring the cover plate to include a plate body and connecting ribs, and connecting the cover plate and the side panels using the connecting ribs to connect the cover plate into a whole, the strength of the cover plate can be improved.

[0010] In some embodiments, the periphery of the plate body is spaced apart from the side panels, and there are multiple connecting ribs, which are spaced apart around the periphery of the plate body.

[0011] By arranging a plurality of connecting ribs, the plurality of connecting ribs respectively connect the plate body and the side panels, the plurality of connecting ribs are arranged at intervals, and the cover body is provided with a plurality of liquid outlets, which is conducive to quickly discharging the liquid from the box body.

[0012] In some embodiments, the side panel includes a first plate segment and a second plate segment, the first plate segment is connected to the valve body, and the second plate segment is connected to the connecting rib; a step is provided at the connection between the first plate segment and the second plate segment, and the step is used to abut against the valve body.

[0013] By providing a step at the connection between the first plate segment and the second plate segment, the abutting surface of the step is arranged facing the valve body, which is used to limit the valve body and prevent the valve body from moving beyond the limit and causing damage to the cover plate or the valve body.

[0014] In some embodiments, the valve body includes a shell and a moving part, the shell is provided with a cavity, a liquid discharge port and a liquid inlet, the liquid inlet is communicated with the cavity, the moving part is covered at the opening of the cavity, and the opening is located on the flow path between the liquid discharge port and the cavity.

[0015] The moving member is configured to be telescopically movable relative to the housing to open or close the opening. The first plate segment is connected to the outer wall of the housing, and the second plate segment is provided with a telescopic space for the moving member to telescope.

[0016] The cavity and the drain port can be separated or connected through the telescopic movement of the moving part. A telescopic space for the telescopic movement of the moving part is provided in the second plate section. When the coolant reaches a preset amount, the drain valve can automatically open to discharge the liquid in the box in time, thereby reducing safety risks.

[0017] In some embodiments, the interval between the inner wall surface of the second plate segment and the outer wall surface of the moving part is 0.3mm-0.5mm; and / or, the interval between the plate body and the moving part ranges from 2mm to 5mm; and / or, the step abuts against the outer shell to limit the position.

[0018] By reasonably setting the distance between the second plate section and the outer wall of the moving part, as well as the spacing range between the plate body and the moving part, the step abuts against the outer shell, it is possible to reduce possible friction or interference during the movement of the moving part and reduce the risk of over-limit movement of the moving part on the basis of ensuring the effective connection between the protective cover and the valve body.

[0019] In some embodiments, the valve body also includes a liquid absorption expansion member and an elastic member arranged in the cavity, one end of the elastic member is connected to the movable member, and the other end of the elastic member is connected to the outer shell, and the liquid absorption expansion member is arranged around the periphery of the elastic member, and the liquid absorption expansion member is constructed to be able to absorb liquid and expand to drive the movable member to move to open or close the opening.

[0020] By arranging an elastic part and a liquid absorption expansion part in the cavity, the elastic part can provide elastic stretching force to separate the drain port and the cavity under normal circumstances, thereby reducing the risk of foreign matter entering the box body through the drain valve; when the coolant leaks abnormally, the liquid absorption expansion part can absorb liquid and expand, thereby pushing the moving part to overcome the elastic stretching force and move, thereby connecting the cavity and the drain port, facilitating the timely discharge of the coolant, and reducing safety risks.

[0021] In some embodiments, the movable part includes an abutment plate and multiple limiting rods, the multiple limiting rods extend into the cavity, the multiple limiting rods define a limiting space, the liquid absorption expansion part is arranged in the limiting space, the abutment plate cover is arranged at the opening, and the liquid absorption expansion part can absorb liquid and expand to drive the abutment plate to move to open or close the opening.

[0022] The limiting space for accommodating the liquid absorption expansion member is limited by a plurality of limiting rods, which can not only improve the stability of the installation of the liquid absorption expansion member, but also limit the expansion direction of the liquid absorption expansion member, making it convenient for the liquid absorption expansion member to drive the abutment plate to move after expansion.

[0023] In some embodiments, a sealing groove is provided at the edge of the opening, an elastic ring is provided in the sealing groove, and the abutment plate cover is provided in the sealing groove.

[0024] By providing a sealing groove at the edge of the opening and arranging an elastic ring in the sealing groove, the elastic ring elastically abuts against both the abutment plate and the sealing groove, thereby improving the sealing between the abutment plate and the housing and reducing the risk of liquid leakage.

[0025] In some embodiments, the moving member further comprises a connecting rod, the connecting rod is arranged on a side of the abutment plate facing the cavity, a threaded section is arranged on the connecting rod, and the elastic member comprises a spring, one end of the spring is wound around the threaded section.

[0026] By arranging a connecting rod and arranging a threaded section at one end of the connecting rod extending into the cavity, a mounting position is provided for the spring, and the spring can limit the movement of the abutment plate by pulling the connecting rod.

[0027] In some embodiments, there are multiple drain ports, and the multiple drain ports are distributed at intervals on the side wall of the shell.

[0028] By providing a plurality of drain ports, the liquid in the cavity can be discharged from the plurality of drain ports simultaneously, thereby improving the discharge efficiency of the coolant.

[0029] In some embodiments, the valve body further includes a nut, the nut is mounted on the mounting hole, the nut is sleeved on the outer circumference of the shell, and a through hole communicating with the liquid inlet is formed on the nut.

[0030] A nut is arranged on the outer circumference of the shell, the two are firmly connected by a threaded structure, and a through hole corresponding to the liquid inlet is formed on the nut to reduce the risk of the nut blocking the liquid inlet.

[0031] In some embodiments, there are multiple mounting holes, and the multiple mounting holes are respectively arranged at the bottom end of the bottom plate, and each of the mounting holes is provided with a drain valve.

[0032] By providing a plurality of mounting holes, a drain valve is provided on each mounting hole, and the mounting holes are provided at the bottom end of the bottom plate, the box can be drained from a plurality of positions, thereby improving the draining efficiency in the event of abnormal leakage.

[0033] 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

[0034] 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.

[0035] Figure 1 A schematic diagram of the structure of a vehicle according to some embodiments of the present application;

[0036] Figure 2 A schematic diagram of the exploded structure of a battery device according to some embodiments of the present application;

[0037] Figure 3 A schematic cross-sectional view of a battery device according to some embodiments of the present application;

[0038] Figure 4 A schematic diagram of a three-dimensional structure of a liquid discharge valve of a battery device according to some embodiments of the present application;

[0039] Figure 5A schematic diagram of a structure of a drain valve of a battery device according to some embodiments of the present application;

[0040] Figure 6 A schematic structural diagram of a protective cover of a liquid discharge valve according to some embodiments of the present application from one perspective;

[0041] Figure 7 A schematic structural diagram of a protective cover of a drain valve in some embodiments of the present application from another perspective;

[0042] Figure 8 A schematic diagram of an exploded structure of a drain valve of a battery device according to some embodiments of the present application;

[0043] Fig. 9 A schematic cross-sectional structure diagram of a drain valve of a battery device according to some embodiments of the present application;

[0044] Fig.10 for Fig. 9 A schematic diagram of the structure of the middle protective cover and the abutment plate;

[0045] Fig.11 A schematic structural diagram of a housing of a liquid discharge valve according to some embodiments of the present application from one perspective;

[0046] Fig.12 A schematic structural diagram of a housing of a liquid discharge valve according to some embodiments of the present application from another perspective;

[0047] Fig.13 This is a schematic diagram of the structure of the moving parts of the liquid discharge valve in some embodiments of the present application;

[0048] Fig.14 This is a schematic structural diagram of a housing and an elastic ring of a liquid discharge valve in some embodiments of the present application;

[0049] Fig.15 This is a schematic structural diagram of the housing and nut of the drain valve of some embodiments of the present application.

[0050] Description of Figure Numbers:

[0051] 1000. Vehicles;

[0052] 100, battery device; 200, controller; 300, motor;

[0053] 10. Box body; 11. Upper cover; 12. Bottom plate; 20. Battery cell; 30. Drain valve;

[0054] 1. Liquid discharge port; 2. Liquid outlet; 3. Protective cover; 31. Cover plate; 311. Plate body; 312. Connecting rib; 32. Side panel; 321. First plate section; 322. Second plate section; 323. Step; 4. Valve body; 41. Moving part; 411. Abutment plate; 412. Limit rod; 413. Connecting rod; 4131. Threaded section; 42. Shell; 421. Cavity; 422. Liquid inlet; 423. Sealing groove; 43. Elastic part; 44. Liquid suction expansion part; 45. Elastic ring; 46. Nut; 461. Through hole.

[0055] 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

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] The descriptions of directions such as "upper", "lower", "front", "back", "left", and "right" in this application are based on the directions shown in the drawings and are only used to explain the Figures 1 to 5 The relative position relationship between the components in the shown posture. If the specific posture changes, the directional indication will also change accordingly.

[0062] The coolant of the battery device may leak under harsh working conditions. In order to discharge the coolant in the battery device in time, a drain valve is set on the bottom plate of the box body to discharge the liquid from the battery device through the drain valve to reduce the risk of high-voltage short circuit caused by coolant leakage. However, during use, the drain valve is often damaged.

[0063] The battery device can be applied to electrical equipment. The following example uses a vehicle as an electrical equipment. After careful research, the applicant found that the battery device is generally installed on the chassis of the vehicle, and the bottom plate of the battery device box is generally located at the low point of the vehicle chassis. In order to facilitate the discharge of the liquid in the box, the drain valve is set at a lower point of the box bottom plate. In this way, when the vehicle is driving, it is easy to hit the drain valve for the relatively high protrusion on the ground, causing damage to the drain valve.

[0064] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle 1000 provided for some embodiments of the present application. The 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.

[0065] 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.

[0066] Please refer to Figure 2 , Figure 2 The exploded diagram 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 20, and the battery cell 20 is contained in the box body 10. Among them, the box body 10 is used to provide a storage space for the battery cell 20, 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 bottom plate 12, and the upper cover 11 and the bottom plate 12 cover each other, and the upper cover 11 and the bottom plate 12 jointly define a storage space for accommodating the battery cell 20. The bottom plate 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 bottom plate 12, so that the upper cover 11 and the bottom plate 12 jointly define a storage space; the upper cover 11 and the bottom plate 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 bottom plate 12. Of course, the box body 10 formed by the upper cover 11 and the bottom plate 12 can be in a variety of shapes, such as a cylinder, a cuboid, etc.

[0067] 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 20, and the plurality of battery cells 20 are connected in series, in parallel or in mixed connection through a busbar.

[0068] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells 20 .

[0069] As an example, the battery cell assembly may be a battery module, which is formed by arranging and fixing a plurality of battery cells 20 to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells 20 by a cable tie.

[0070] 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 .

[0071] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box body 10 by fixing the battery module in the box body 10 .

[0072] As an example, the battery cell assembly may also be accommodated in the case 10 by directly fixing the plurality of battery cells 20 to the case.

[0073] In the battery device 100, there may be multiple battery cells 20, and the multiple battery cells 20 may be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cells 20 are both connected in series and in parallel. The multiple battery cells 20 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 20 is accommodated in the box 10; of course, the battery device 100 may also be a battery device module in which multiple battery cells 20 are first connected in series, in parallel, or in a mixed connection, and the multiple battery device modules are then 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 20.

[0074] Each battery cell 20 may be a secondary battery device or a primary battery device, or a lithium-sulfur battery device, a sodium-ion battery device, or a magnesium-ion battery device, but is not limited thereto. The battery cell 20 may be cylindrical, flat, rectangular, or in other shapes.

[0075] Please refer to Figure 3-Figure 5 According to some embodiments of the present application, the present application provides a battery device 100, including a box body 10 and a battery cell 20 arranged in the box body 10, the box body 10 includes an upper cover 11 and a bottom plate 12 covering each other, the bottom plate 12 is provided with a mounting hole, and a drain valve 30 is provided at the mounting hole. The drain valve 30 includes a valve body 4 and a protective cover 3, the protective cover 3 covers the valve body 4, and a liquid outlet 2 is provided on the protective cover 3, and the protective cover 3 is arranged toward the outside of the box body 10.

[0076] The box 10 refers to the outer box of the battery device 100. A plurality of battery cells 20 are generally arranged in the box 10. The box 10 is composed of two parts. The bottom plate 12 refers to the bottom part of the box 10, which is located at the bottom during the use of the battery device 100. The upper cover 11 refers to the cover part that can be covered on the bottom plate 12. The upper cover 11 and the bottom plate 12 cooperate to form a storage space, and the battery cells 20 are arranged in the storage space. After the coolant of the battery device 100 leaks, it will accumulate on the bottom plate 12 of the box 10. Therefore, a mounting hole is generally provided on the box 10. The mounting hole is generally a through hole, and a drain valve 30 is provided on the mounting hole. When the coolant of the battery device 100 leaks abnormally, the coolant accumulated on the bottom plate 12 can be discharged from the box 10 through the drain valve 30. In order to improve the drainage effect, the mounting hole is generally provided at a lower position of the bottom plate 12, so the drain valve 30 is also installed at a lower position of the bottom plate 12. Taking the battery device 100 applied to a vehicle as an example, the battery device 100 is generally installed on the chassis of the vehicle and is in a lower position. During the driving process of the vehicle, if there is a protrusion on the road surface, it is easy to bump against the drain valve 30 in a lower position, causing damage to the drain valve 30. Damage to the drain valve 30 will cause abnormal discharge, which poses a high safety risk. The drain valve 30 in this embodiment not only includes a valve body 4 with a drain function, but also is provided with a protective cover 3, which is provided on the valve body 4 to protect the valve body 4. At this time, it is also necessary to provide a liquid outlet 2 on the protective cover 3, and the liquid in the box 10 will flow in through the liquid inlet 422 of the drain valve 30, be discharged from the drain port 1 of the valve body 4, and then be discharged from the liquid outlet 2 on the protective cover 3 to the outside of the box 10. The protective cover 3 is arranged toward the outside of the box 10. When it encounters a bump during use, it will first hit the protective cover 3, thereby protecting the valve body 4 through the protective cover 3, and even if the protective cover 3 is damaged by some bumps, it will not affect the normal discharge function of the valve body 4.

[0077] By providing a protective cover 3 on the valve body 4, a liquid outlet 2 is provided on the protective cover 3, and the protective cover 3 is provided on the outside of the box body 10, the valve body 4 provided in the mounting hole can be well protected, reducing the risk of the drain valve 30 being damaged by bumps and affecting the normal drain function.

[0078] Please refer to Figure 6 In some embodiments, the protective cover 3 includes a cover plate 31 and a side panel 32 surrounding the cover plate 31 , the side panel 32 is connected to the valve body 4 , and the cover plate 31 is provided with a liquid outlet 2 .

[0079] The protective cover 3 may be composed of two parts connected to each other, the cover plate 31 is arranged facing the valve body 4, and the side panel 32 is used to connect with the valve body 4. Specifically, the side panel 32 may be a circular side panel, which is arranged on the side of the cover plate 31 facing the valve body 4, and may be connected with the outer wall surface of the valve body 4, and this connection method may be a tight fit or a threaded connection. When the threaded connection is used, the inner wall surface of the side panel 32 is provided with an internal thread, and the outer wall surface of the valve body 4 is provided with an external thread. The liquid outlet 2 is provided on the cover plate 31 so that the liquid can be discharged smoothly, and the normal discharge function of the drain valve 30 will not be affected by the provision of the protective cover 3.

[0080] By setting the protective cover 3 as a cover plate 31 and a side panel 32 formed around the outer edge of the cover plate 31, the side panel 32 is connected to the valve body 4 to install the protective cover 3 on the valve body 4, and a liquid outlet 2 is provided on the cover plate 31 to realize the normal discharge function of the drain valve 30.

[0081] Please refer to Figure 6 In some embodiments, the cover plate 31 includes a plate body 311 and a connecting rib 312 , the connecting rib 312 connects the plate body 311 and the side panel 32 , and a liquid outlet 2 is arranged between the plate body 311 , the connecting rib 312 and the side panel 32 .

[0082] The cover plate 31 is not a whole plate, but is provided with a liquid outlet 2. The plate body 311 is arranged in the middle position, and the plate body 311 and the side panels 32 are connected by connecting ribs 312, so that the plate body 311, the connecting ribs 312 and the side panels 32 are connected into a whole. The gap between the connecting ribs 312, the side panels 32 and the plate body 311 forms the liquid outlet 2. The connecting ribs 312 play a reinforcing role, and compared with the use of a circular through hole on the whole plate, the use of the connecting ribs 312 can improve the strength of the cover plate 31 and help reduce the weight of the cover plate 31.

[0083] By configuring the cover plate 31 to include a plate body 311 and connecting ribs 312 , and connecting the cover plate 31 and the side panels 32 using the connecting ribs 312 , the cover plate 31 is connected as a whole, which helps to improve the strength of the cover plate 31 .

[0084] Please refer to Figure 6 In some embodiments, a plurality of connecting ribs 312 are disposed at intervals between the periphery of the plate body 311 and the side panels 32 , and the plurality of connecting ribs 312 are disposed at intervals around the periphery of the plate body 311 .

[0085] The periphery here refers to the outer edge, and the plate body 311 can be in a circular or square shape. In a specific embodiment, the plate body 311 can be a circular plate, which means that the plate body 311 is circular in shape, and the circular plate is arranged in the middle of the side panel 32. Further, the center line of the circular plate can be arranged to coincide with the center line of the side panel 32. The number of connecting ribs 312 can be set to multiple, and multiple connecting ribs 312 radiate outward from the outer circumference of the plate body 311 in a wheel radial shape to connect with the side panel 32, and multiple connecting ribs 312 are arranged at intervals, and two adjacent connecting ribs 312 are arranged to form a liquid outlet 2 with the plate body 311 and the side panel 32. Multiple connecting ribs 312 are arranged to form multiple liquid outlets 2, and the liquid discharged from the valve body 4 can be discharged from the box 10 from any liquid outlet 2.

[0086] By setting a plurality of connecting ribs 312, the plurality of connecting ribs 312 respectively connect the plate body 311 and the side panels 32, and the plurality of connecting ribs 312 are arranged at intervals, and the cover body is provided with a plurality of liquid outlets 2, it is beneficial to quickly discharge the liquid from the box body 10 and reduce the risk of high-voltage short circuit of the battery device 100.

[0087] Please refer to Figure 7 In some embodiments, the side panel 32 includes a first plate segment 321 and a second plate segment 322, the first plate segment 321 is connected to the valve body 4, and the second plate segment 322 is connected to the cover plate 31; a step 323 is provided at the connection between the first plate segment 321 and the second plate segment 322, and the step 323 is used to abut against the valve body 4.

[0088] The side panel 32 includes two parts, namely, a first panel section 321 and a second panel section 322. The first panel section 321 and the second panel section 322 can be set as cylindrical side panels, and the two have the same shape but different diameters. Specifically, the first panel section 321 is connected to the valve body 4, and the second panel section 322 is connected to the cover plate 31. More specifically, the second panel section 322 is connected to the connecting rib 312. The diameter of the first panel section 321 is greater than the diameter of the second panel section 322, where the diameter refers to the inner diameter. The step 323 is set at the connection between the first panel section 321 and the second panel section 322. When the valve body 4 abuts against the step 323, the step 323 can play a limiting role to avoid damage to the cover plate 31 or the valve body 4 caused by installation or movement exceeding the preset limit.

[0089] By setting a step 323 at the connection between the first plate section 321 and the second plate section 322, the abutting surface of the step 323 is arranged to face the valve body 4, which is used to limit the valve body 4 and prevent the valve body 4 from moving beyond the limit and causing damage to the cover plate 31 or the valve body 4.

[0090] Please refer to Figure 7 and Figure 8In some embodiments, the valve body 4 includes a shell 42 and a moving part 41 telescopically installed on the shell 42, the shell 42 is provided with a cavity 421, a liquid discharge port 1 and a liquid inlet 422, the liquid inlet 422 is communicated with the cavity 421, the moving part 41 is covered at the opening of the cavity 421, and the opening is located on the flow path between the liquid discharge port 1 and the cavity 421; and the moving part 41 is constructed to be able to telescopically move relative to the shell 42 to open or close the opening, the first plate segment 321 is connected to the outer wall of the shell 42, and the second plate segment 322 is provided with a telescopic space for the moving part 41 to telescope.

[0091] The shell 42 refers to the outer shell part, a cavity 421 is arranged in the shell 42, and a liquid inlet 422 connected to the cavity 421 is also arranged on the shell, and the liquid inlet 422 is arranged toward the inside of the box 10, and the liquid in the box 10 enters the cavity 421 through the liquid inlet 422, and the liquid discharge port 1 can also be arranged on the outer wall surface of the shell 42, and the moving part 41 is opened at the opening, and the moving part 41 can be telescopically moved relative to the shell 42, specifically, along the length direction of the cavity 421, or in other words, along the central axis direction of the cavity 421. When there is no coolant or less coolant in the box 10, that is, when the battery device is in normal use, the moving part 41 covers the opening of the cavity 421, and the opening is located on the flow path between the liquid discharge port 1 and the cavity 421, and the moving part 41 separates the cavity 421 and the liquid discharge port 1. The movable member 41 is constructed to be telescopically movable relative to the housing 42 to open or close the opening. When the opening is open, the cavity 421 is connected to the drain port 1, and the liquid can flow from the cavity 421 to the drain port 1; when the opening is closed, the cavity 421 and the drain port 1 are separated, and the liquid cannot flow from the cavity 421 to the drain port 1. Specifically, when there is a lot of coolant in the box 10, that is, when drainage is required under abnormal conditions, a lot of coolant flows into the cavity 421. At this time, the movable member 41 will move toward the outside of the cavity 421 and move to open the opening of the cavity 421, so that the cavity 421 and the drain port 1 are connected, and the coolant in the cavity 421 can be discharged through the drain port 1, and finally discharged from the liquid outlet 2 of the protective cover 3, thereby reducing the risk of coolant accumulation in the box 10 and causing safety hazards. The first plate section 321 is connected to the outer wall of the shell 42 to install the protective cover 3 on the valve body 4. The second plate section 322 is provided with a telescopic space for the moving part 41 to extend and retract, so that the moving part 41 can open the opening without hindrance, that is, move to the position connecting the cavity 421 and the drain port 1.

[0092] The opening can be opened or closed by the telescopic movement of the movable part 41. A telescopic space for the telescopic movement of the movable part 41 is provided in the second plate section 322. When the coolant reaches a preset amount, the drain valve 30 can automatically open to discharge the liquid in the box body 10 in time, thereby reducing safety risks.

[0093] Please refer to Figure 8-Figure 9 In some embodiments, the valve body 4 also includes a liquid absorption expansion member 44 and an elastic member 43 arranged in the cavity 421, one end of the elastic member 43 is connected to the movable member 41, and the other end of the elastic member 43 is connected to the outer shell 42, and the liquid absorption expansion member 44 is arranged around the outer periphery of the elastic member 43. The liquid absorption expansion member 44 can absorb liquid and expand to drive the movable member 41 to move to open or close the opening.

[0094] The liquid-absorbing expansion member 44 can absorb liquid and expand, and the volume becomes larger. A channel is provided in the liquid-absorbing expansion member 44, one end of the elastic member 43 is connected to the moving member 41, that is, connected to the top of the cavity 421, and the other end passes through the channel and is connected to the shell 42, and is also connected to the bottom of the cavity 421. Under normal use, the movement of the moving member 41 is limited by the elastic tensile force of the elastic member 43. At this time, the opening is closed, and the cavity 421 is separated from the liquid discharge port 1, which can reduce the risk of foreign matter entering the box body 10 from the outside of the box body 10. In abnormal situations, such as when the coolant leaks, the coolant will enter the cavity 421 of the valve body 4 from the liquid inlet 422 of the drain valve 30. The volume of the liquid-absorbing expansion member 44 in the cavity 421 will expand after absorbing the liquid. The volume expansion will overcome the elastic tensile force to drive the moving member 41 to move, specifically, to move outside the cavity 421. The opening is opened, so that the cavity 421 and the drain port 1 are connected, and the coolant in the cavity 421 can be discharged from the valve body 4 through the drain port 1, and finally discharged from the box body 10 from the liquid outlet 2 of the protective cover 3, so as to achieve timely discharge of the coolant. Specifically, the liquid-absorbing expansion member 44 can be a water-absorbing resin.

[0095] By arranging an elastic member 43 and a liquid absorption expansion member 44 in the cavity 421, the elastic member 43 can provide an elastic stretching force so that the opening is closed under normal circumstances, and the drain port 1 and the cavity 421 are separated, thereby reducing the risk of foreign matter entering the box body 10 through the drain valve 30; when the coolant leaks abnormally, the liquid absorption expansion member 44 can absorb liquid and expand, thereby pushing the moving member 41 to overcome the elastic stretching force and move, and the opening is opened, connecting the cavity 421 and the drain port 1, facilitating the timely discharge of the coolant and reducing safety risks.

[0096] Reference Fig. 9 and Fig.10 In some embodiments, the interval between the inner wall surface of the second plate segment 322 and the outer wall surface of the moving member 41 is 0.3mm-0.5mm; and / or, the interval between the plate body 311 and the moving member 41 ranges from 2mm to 5mm; and / or, the step 323 abuts against the outer shell 42 to limit the position.

[0097] The second plate segment 322 is provided with a telescopic space for the moving member 41 to telescope, that is, the moving member 41 is to move in the inner cavity of the second plate segment 322. The outer wall surface of the moving member 41 refers to the outer surface of the moving member 41 facing the second plate segment 322. In order to reduce friction or interference, a certain distance needs to be set between the outer wall surface of the moving member 41 and the inner wall surface of the second plate segment 322, such as Fig.10 As shown in L1, taking into account the manufacturing tolerance, this interval can be set to 0.3mm-0.5mm. Fig.10 As shown in L2, since the moving member 41 moves in the telescopic space of the second plate segment 322, the second plate segment 322 is connected to the cover plate 31. In order to avoid the moving member 41 from moving too far and colliding with the cover plate 31 or the plate body 311 to cause damage, the interval between the plate body 311 and the moving member 41 is set to be at least 2mm. The interval between the plate body 311 and the moving member 41 specifically refers to the interval between the plate body 311 and the top surface of the abutment plate 411 of the moving member 41, so that the collision between the two can be avoided from causing damage. At the same time, considering the volume requirement of reducing the drain valve 30, the spacing between the two should not be set too large, and is generally set to a maximum of no more than 5mm. In addition, the step 323 is used to limit the position of the shell 42. When the protective cover 3 is installed in place, the shell 42 of the step 323 abuts to avoid the installation position exceeding the preset limit.

[0098] By reasonably setting the distance between the second plate section 322 and the outer wall of the movable part 41, as well as the spacing range between the plate body 311 and the movable part 41, the step 323 abuts against the outer shell 42, which can reduce possible friction or interference during the movement of the movable part 41 while ensuring the effective connection between the protective cover 3 and the valve body 4, thereby reducing the risk of over-limit movement of the movable part 41.

[0099] Please refer to Fig.11 and Fig.12 In some embodiments, there are multiple drain ports 1 , and the multiple drain ports 1 are distributed at intervals on the side wall of the housing 42 .

[0100] The drain port 1 can be a notch set on the outer wall surface at the top of the shell 42. When the abutment plate 411 moves past the drain port 1, the cavity 421 is connected to the drain port 1 to realize the discharge of the coolant from the cavity 421 to the drain port 1. Multiple drain ports 1 can be distributed at intervals on the shell 42. Specifically, they can be evenly distributed or unevenly distributed. Technical personnel in this field can set it according to actual needs.

[0101] By providing a plurality of drain ports 1 , the liquid in the cavity 421 can be discharged from the plurality of drain ports 1 simultaneously, thereby improving the discharge efficiency of the coolant.

[0102] Please refer to Fig.13In some embodiments, the movable member 41 includes an abutment plate 411 and a plurality of limiting rods 412. The abutment plate 411 is covered at the opening. The plurality of limiting rods 412 are respectively connected to the abutment plate 411 and extend into the cavity 421. The plurality of limiting rods 412 define a limiting space. The liquid absorption expansion member 44 is arranged in the limiting space. The abutment plate 411 is covered at the opening. The liquid absorption expansion member 44 is constructed to be able to absorb liquid and expand to drive the abutment plate 411 to move to open or close the opening.

[0103] A plurality of limiting rods 412 are distributed on the side of the abutment plate 411 facing the box body 10. The plurality of limiting rods 412 can be distributed at intervals in the circumferential direction, and can be evenly distributed at intervals. The limiting space here is the middle area formed by the plurality of limiting rods 412, which is used to limit the circumference of the liquid absorption expansion member 44. This can not only maintain the stability of the installation of the liquid absorption expansion member 44, but also make the liquid absorption expansion member 44 expand as much as possible towards the central axis direction of the cavity 421 after the liquid absorption and expansion. Specifically, the liquid absorption expansion member 44 can be formed by stacking a plurality of resins. The liquid absorption expansion member 44 can be in contact with the abutment plate 411 when not absorbing liquid, or there can be a certain interval with the abutment plate 411. Under normal conditions, the opening is closed, the cavity 421 and the discharge port 1 are respectively located on both sides of the abutment plate 411, separated by the abutment plate 411, and the liquid cannot flow from the cavity 421 to the discharge port 1. However, after absorbing water, the liquid-absorbing expansion member 44 will expand and abut against the abutment plate 411 and push the abutment plate 411 to move, and the opening will open. When the abutment plate 411 moves to the point where the cavity and the liquid discharge port 1 are located on the same side of the abutment plate 411, the cavity 421 and the liquid discharge port 1 are connected, so that the coolant in the cavity 421 can be discharged from the liquid discharge port 1 and finally discharged from the liquid outlet 2. The limiting space for accommodating the liquid-absorbing expansion member 44 is defined by a plurality of limiting rods 412, which can not only improve the stability of the installation of the liquid-absorbing expansion member 44, but also limit the expansion direction of the liquid-absorbing expansion member 44, so that the liquid-absorbing expansion member 44 can drive the abutment plate 411 to move after expansion.

[0104] Please refer to Fig.13 In some embodiments, the movable member 41 further includes a connecting rod 413 , which is disposed on a side of the abutment plate 411 facing the cavity 421 , and a threaded segment 4131 is disposed on the connecting rod 413 , and the elastic member 43 includes a spring, one end of which is wound around the threaded segment 4131 .

[0105] The connecting rod 413 is used to provide an installation position for the elastic member 43. Specifically, the elastic member 43 can be a spring, one end of the connecting rod 413 is connected to the abutment plate 411, and the other end extends into the cavity 421. A threaded section 4131 is provided at one end of the connecting rod 413 facing the cavity 421, and the spring can be installed in the gap between adjacent threads to achieve a fixed connection between the spring and the connecting rod 413. Regarding the specific setting of the connecting rod 413, it can be set in the limiting space formed by the limiting rod 412.

[0106] By providing a connecting rod 413 and a threaded section 4131 at one end of the connecting rod 413 extending into the cavity 421 , a mounting position is provided for the spring. Meanwhile, the spring can limit the movement of the abutting plate 411 by pulling the connecting rod 413 .

[0107] Please refer to Fig.14 In some embodiments, a sealing groove 423 is provided at the edge of the opening, an elastic ring 45 is provided in the sealing groove 423 , and the abutting plate 411 is covered in the sealing groove 423 .

[0108] The edge of the opening refers to the outer peripheral position of the opening, which is also on the outer shell 42. A sealing groove 423 is set on the outer shell 42, which can be a circular sealing ring. The elastic ring 45 can be a rubber ring or an O-ring or other elastic ring body. The abutment plate 411 covers the sealing groove 423 and also covers the elastic ring 45 and squeezes the elastic ring 45, so that the elastic ring 45 is deformed with an elastic restoring force, thereby sealing the gap between the abutment plate 411 and the outer shell 42.

[0109] By providing a sealing groove 423 at the edge of the opening and arranging an elastic ring 45 in the sealing groove 423, the elastic ring 45 elastically abuts against both the abutment plate 411 and the sealing groove 423, thereby improving the sealing between the abutment plate and the housing 42 and reducing the risk of liquid leakage.

[0110] Please refer to Fig.15 In some embodiments, the valve body 4 further includes a nut 46 , which is installed in the installation hole. The nut 46 is sleeved on the outer periphery of the shell 42 , and a through hole 461 communicating with the liquid inlet 422 is formed on the nut 46 .

[0111] The nut 46 can be installed at the installation hole position of the bottom plate 12 to provide a fixed installation position for the housing 42. Specifically, the nut 46 and the housing 42 can be connected by a threaded structure, and the liquid inlet 422 is set on the side wall of the housing 42. In order to avoid the installation of the nut 46 blocking the liquid inlet 422, a through hole 461 connected to the liquid inlet 422 can be set on the nut 46. Specifically, the number of liquid inlets 422 can be set to multiple, and the multiple liquid inlets 422 are spaced apart on the outer wall surface of the housing 42. The number of through holes 461 can also be set to multiple, and the number of through holes 461 is equal to the number of liquid inlets 422 and is set one-to-one.

[0112] A nut 46 is provided and sleeved on the outer circumference of the housing 42 , and the two are firmly connected by a threaded structure, and a through hole 461 corresponding to the liquid inlet 422 is formed on the nut 46 to reduce the risk of the nut 46 blocking the liquid inlet 422 .

[0113] In some embodiments, there are multiple mounting holes, and the multiple mounting holes are respectively disposed at the bottom end of the bottom plate 12 , and a drain valve 30 is disposed on each mounting hole.

[0114] There are multiple mounting holes, and each mounting hole is provided with a drain valve 30, that is, there are multiple drain valves 30, and the mounting holes are arranged at the bottom end of the base plate 12, that is, the lowest position, because the coolant will accumulate at the lowest end after leakage, so it is convenient to discharge the coolant.

[0115] By providing a plurality of mounting holes, a drain valve 30 is provided on each mounting hole, and the mounting holes are provided at the bottom end of the bottom plate 12, the box body 10 can be drained from a plurality of positions, thereby improving the draining efficiency in the event of abnormal leakage.

[0116] According to some embodiments of the present application, the present application provides a battery device, including a box body 10 and a battery cell 20 arranged in the box body 10, the box body 10 includes an upper cover 11 and a bottom plate 12 covering each other, the bottom plate 12 is provided with a mounting hole, the number of the mounting holes is multiple, each mounting hole is provided with a drain valve 30, the drain valve 30 includes a valve body 4 and a protective cover 3 covering the valve body 4, the protective cover 3 is arranged toward the outside of the box body 10. The protective cover 3 includes a cover plate 31 and a side panel 32 surrounding the cover plate 31, the cover plate 31 includes a plate body 311 and a connecting rib 312, the periphery of the plate body 311 is spaced apart from the side panel 32, the number of the connecting ribs 312 is multiple, the multiple connecting ribs 312 are spaced apart around the periphery of the plate body 311, the connecting ribs 312 connect the plate body 311 and the side panel 32, and the plate body 311, the connecting ribs 312 and the side panel 32 are arranged to form a liquid outlet 2. The side panel 32 includes a first panel section 321 and a second panel section 322 . The first panel section 321 is connected to the valve body 4 , and the second panel section 322 is connected to the cover plate 31 . A step 323 is provided at the connection between the first panel section 321 and the second panel section 322 . The step 323 is used to abut against the valve body 4 . The valve body 4 includes an outer shell 42 and a movable member 41 telescopically mounted on the outer shell 42. The outer shell 42 is provided with a cavity 421, a plurality of liquid discharge ports 1 and a liquid inlet 422 connected to the cavity 421. An elastic member 43 and a liquid absorption expansion member 44 are provided in the cavity 421. The movable member 41 covers the opening of the cavity 421. The first plate section 321 is connected to the outer wall surface of the outer shell 42, and the second plate section 322 is provided with a telescopic space for the movable member 41 to be expanded and retracted. The liquid absorption expansion member 44 is arranged around the outer periphery of the elastic member 43, one end of the elastic member 43 is connected to the movable member 41, and the other end of the elastic member 43 is connected to the outer shell 42. The liquid absorption expansion member 44 can absorb liquid and expand to drive the movable member 41 to move to open or close the opening. Specifically, the moving member 41 includes an abutment plate 411, a plurality of limiting rods 412 and a connecting rod 413, the abutment plate cover is arranged at the opening, the plurality of limiting rods 412 are respectively connected to the abutment plate and extend into the cavity 421, the plurality of limiting rods 412 define a limiting space, the liquid absorption expansion member 44 is arranged in the limiting space, the abutment plate 411 cover is arranged at the opening, the liquid absorption expansion member 44 is configured to be able to absorb liquid and expand to drive the abutment plate 411 to move to open or close the opening, the connecting rod 413 is arranged on the side of the abutment plate 411 facing the cavity 421, the connecting rod 413 is provided with a threaded section 4131, the elastic member 43 includes a spring, one end of the spring is wound around the threaded section 4131. This embodiment can protect the valve body 4 and reduce the risk that the drain valve 30 cannot drain normally due to collision.

[0117] According to some embodiments of the present application, the present application further provides an electric device, which includes a device body and the above-mentioned battery device 100. Since the electric device includes all technical solutions of any embodiment of the above-mentioned battery device 100, it at least has all the beneficial effects brought by any of the above-mentioned embodiments, which will not be described one by one here.

[0118] 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: The invention comprises a box body and a battery cell arranged in the box body, wherein the box body comprises an upper cover and a bottom plate covering each other, the bottom plate is provided with a mounting hole, a drain valve is provided at the mounting hole, the drain valve comprises a valve body and a protective cover, the protective cover is arranged on the valve body, a liquid outlet is provided on the protective cover, and the protective cover is arranged toward the outside of the box body.

2. The battery device according to claim 1, characterized in that: The protection cover comprises a cover plate and a side panel surrounding the cover plate, the side panel is connected to the valve body, and the cover plate is provided with the liquid outlet.

3. The battery device according to claim 2, characterized in that: The cover plate includes a plate body and connecting ribs, wherein the connecting ribs connect the plate body and the side panels, and the liquid outlet is arranged between the plate body, the connecting ribs and the side panels.

4. The battery device according to claim 3, characterized in that: The periphery of the plate body is spaced apart from the side panels, and the number of the connecting ribs is multiple, and the multiple connecting ribs are spaced apart around the outer periphery of the plate body.

5. The battery device according to claim 3, characterized in that: The side panel comprises a first panel section and a second panel section, wherein the first panel section is connected to the valve body, and the second panel section is connected to the connecting rib; A step is provided at the connection between the first plate segment and the second plate segment, and the step is used to abut against the valve body.

6. The battery device according to claim 5, characterized in that: The valve body comprises a shell and a moving part, wherein the shell is provided with a cavity, a liquid discharge port and a liquid inlet, wherein the liquid inlet is communicated with the cavity, and the moving part is covered at the opening of the cavity, wherein the opening is located on the flow path between the liquid discharge port and the cavity. The moving member is configured to be telescopically movable relative to the housing to open or close the opening. The first plate segment is connected to the outer wall of the housing, and the second plate segment is provided with a telescopic space for the moving member to telescope.

7. The battery device according to claim 6, characterized in that: The interval between the inner wall surface of the second plate segment and the outer wall surface of the moving member is 0.3 mm-0.5 mm; and / or, the spacing between the plate body and the moving member ranges from 2 mm to 5 mm; And / or, the step abuts against the shell to limit position.

8. The battery device according to claim 6, characterized in that: The valve body also includes a liquid absorption expansion member and an elastic member arranged in the cavity, one end of the elastic member is connected to the movable member, and the other end of the elastic member is connected to the outer shell, and the liquid absorption expansion member is arranged around the outer circumference of the elastic member. The liquid absorption expansion member can absorb liquid and expand to drive the movable member to move to open or close the opening.

9. The battery device according to claim 8, characterized in that: The movable member includes an abutment plate and a plurality of limiting rods, the abutment plate cover is arranged on the opening, the plurality of limiting rods are respectively connected to the abutment plate and extend into the cavity, the plurality of limiting rods define a limiting space, the liquid absorption expansion member is arranged in the limiting space, and the liquid absorption expansion member is constructed to be able to absorb liquid and expand to drive the abutment plate to move to open or close the opening.

10. The battery device according to claim 9, characterized in that: The moving member further comprises a connecting rod, which is arranged on a side of the abutment plate facing the cavity, and a threaded section is arranged on the connecting rod. The elastic member comprises a spring, and one end of the spring is wound around the threaded section.

11. The battery device according to claim 9, characterized in that: A sealing groove is arranged at the edge of the opening, an elastic ring is arranged in the sealing groove, and the abutting plate cover is arranged in the sealing groove.

12. The battery device according to claim 6, characterized in that: There are multiple drain ports, and the multiple drain ports are distributed at intervals on the side wall of the shell.

13. The battery device according to claim 6, characterized in that: The valve body further comprises a nut, which is mounted on the mounting hole and sleeved on the outer circumference of the shell. The nut is provided with a through hole which is communicated with the liquid inlet.

14. The battery device according to any one of claims 1 to 13, characterized in that: There are multiple mounting holes, each of which is respectively arranged at the bottom end of the bottom plate, and each of the mounting holes is provided with a drain valve.

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

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