Box body assembly, battery and electric device

Abstract

The utility model discloses a box body assembly, a battery and a power utilization device, and belongs to the technical field of batteries. The box body assembly comprises a box body and a drainage structure, a containing cavity and a water accumulation groove are formed in the box body, and a water outlet is formed in the groove bottom of the water accumulation groove; the drainage structure comprises a floater and a drainage pipe, the floater is installed at the water outlet in a floating mode and used for selectively blocking the water outlet, and the drainage pipe is connected to the water outlet and at least partially located in the containing cavity. The water accumulation tank, the floater mounted at the water outlet of the water accumulation tank in a floating manner and the drainage pipe connected to the water outlet are arranged in the box body, so that redundant water on the surface of the box body can be automatically drained under the condition that normal use of a battery is not influenced, the box body is kept dry and clean, and potential corrosion and short-circuit risks are reduced; and optimization of space utilization in the box body is facilitated.

Description

Technical Field

[0001] This application belongs to the technical field of batteries, and particularly relates to a box body assembly, a battery, and an electrical device. Background Art

[0002] With the increasing maturity of the development of electric vehicles, the requirements for the safety performance of battery packs are getting higher and higher. However, due to the assembly errors and processing errors existing in the battery packs themselves, when an electric vehicle passes through water accumulation or rainy weather, external moisture may penetrate into the interior of the battery pack, which will not only endanger the safety performance of the battery pack, but also when the user needs to disassemble or replace the battery pack, the accumulated moisture inside may flow out to affect the maintenance experience. Utility Model Content

[0003] This application aims to solve at least one of the technical problems existing in the prior art. For this purpose, this application provides a box body assembly, a battery, and an electrical device. By providing a water accumulation groove in the box body of the box body assembly, a float floatingly installed at the water outlet of the water accumulation groove, and a drain pipe connected to the water outlet, it is possible to automatically drain the excess moisture on the surface of the box body without affecting the normal use of the battery, keep the box body dry and clean, reduce the potential corrosion and short - circuit risks, and also help to optimize the space utilization inside the box body.

[0004] In the first aspect, this application provides a box body assembly applied to a battery. The box body assembly includes:

[0005] A box body that forms a receiving cavity and a water accumulation groove, and the bottom of the water accumulation groove forms a water outlet;

[0006] A drainage structure, the drainage structure includes a float and a drain pipe. The float is floatingly installed at the water outlet and is used to selectively block the water outlet. The drain pipe is connected to the water outlet and at least part of it is located inside the receiving cavity.

[0007] According to the box body assembly of this application, the float floats relative to the water outlet to selectively block or open the water outlet according to the change of the water level in the water accumulation groove. That is, when the water level rises to a threshold value due to rainfall or the electrical device passing through water, etc., the float rises and opens the water outlet, so that the water in the water accumulation groove flows out of the receiving cavity through the drain pipe, automatically and timely draining the accumulated water on the box body, reducing the safety risks such as short - circuit or corrosion of the battery caused by external accumulated water; when the water level drops, the float drops and blocks the water outlet, thus minimizing the possibility of external impurities and moisture entering the box body, ensuring the dryness and cleanliness inside the box body. In addition, at least part of the drain pipe is arranged inside the receiving cavity, so that part of the drain pipe will pass through the outer wall of the box body and enter the receiving cavity to cooperate with the water outlet, so as to better guide the flow of accumulated water, reduce the residence time of accumulated water inside the box body, reduce the potential corrosion and short - circuit risks, and also help to optimize the space utilization inside the box body.

[0008] According to an embodiment of the present application, the drainage structure further includes:

[0009] An elastic member, both ends of the elastic member are respectively connected to the float and the drain pipe, and are used to drive the float close to the water outlet.

[0010] According to an embodiment of the present application, the drainage structure further includes:

[0011] A first connecting rod, both ends of the first connecting rod are respectively connected to the inner wall of the drain pipe;

[0012] A second connecting rod, both ends of the second connecting rod are respectively connected to the inner wall of the drain pipe, and the first connecting rod and the second connecting rod are cross-connected; wherein, the end of the elastic member away from the float is respectively connected to the first connecting rod and the second connecting rod.

[0013] According to an embodiment of the present application, the accommodation cavity has a drain opening communicating with the outside, and the drain pipe includes:

[0014] A guiding section, the guiding section extends along the direction of the water outlet, one end of the guiding section is hermetically arranged on the outer edge of the water outlet, and the guiding section is adapted to slidably cooperate with the float;

[0015] A drainage section, one end of the drainage section is hermetically sleeved outside the other end of the guiding section, and the other end of the drainage section is hermetically arranged at the drain opening.

[0016] According to an embodiment of the present application, the drainage structure further includes:

[0017] A first sealing member, sleeved on the outer wall of the float and adapted to abut against the inner edge of the water outlet; and / or

[0018] A second sealing member, sleeved on the outer wall part of the guiding section away from the water outlet and abutting against the inner wall of the drainage section; and / or

[0019] A third sealing member, sleeved on the outer wall of the drainage section and abutting against the inner edge of the drain opening.

[0020] According to an embodiment of the present application, the drainage structure further includes:

[0021] A pipe cover, sleeved on the end of the drain pipe away from the water outlet, and a plurality of through holes are provided on the pipe cover.

[0022] According to an embodiment of the present application, it further includes:

[0023] A heating member, arranged in the accommodation cavity and close to the bottom of the water accumulation tank;

[0024] At least one pair of probes, one end of each probe is located in the accommodating cavity and electrically connected to the heating element, and the other end of the probe passes through the bottom of the water accumulation tank and extends into the water accumulation tank.

[0025] According to an embodiment of the present application, a first mounting hole is provided in the bottom of the water accumulation tank, the first mounting hole and the water outlet are spaced apart, a second mounting hole corresponding to the first mounting hole is provided in the heating element, and the box body assembly further includes:

[0026] A first fastener, located in the water accumulation tank and disposed outside the first mounting hole, the first fastener is provided with a notch communicating with the water accumulation tank;

[0027] A second fastener, one end of the second fastener sequentially passes through the second mounting hole and the first mounting hole and is threadedly connected to the first fastener, and one end of the probe is disposed through the second fastener and extends to the notch.

[0028] According to an embodiment of the present application, it further includes:

[0029] A heat conducting member, the heat conducting member is located in the accommodating cavity and disposed on a surface of the heating element close to the water accumulation tank.

[0030] According to an embodiment of the present application, the box body includes:

[0031] A lower box body, having an open top;

[0032] A sealing cover, covering the open portion, the sealing cover is provided with a sunken groove and the water accumulation tank, a maintenance opening spaced from the water accumulation tank is provided at the bottom of the sunken groove, the bottom of the water accumulation tank is lower than the bottom of the sunken groove, and the water accumulation tank communicates with the sunken groove;

[0033] A maintenance cover, installed in the sunken groove for closing the maintenance opening.

[0034] In a second aspect, the present application provides a battery, the battery includes:

[0035] A plurality of battery cells, and

[0036] The box body assembly as described above, the battery cells are installed in the box body assembly.

[0037] According to the battery of the present application, by providing a water accumulation tank in the box body of the box body assembly, a float floating at the water outlet of the water accumulation tank, and a drain pipe connected to the water outlet, excess moisture on the surface of the box body can be automatically removed without affecting the normal use of the battery, keeping the box body dry and clean, reducing potential corrosion and short - circuit risks, and also helping to optimize the space utilization inside the box body.

[0038] In a third aspect, the present application provides an electrical device, which includes:

[0039] The electrical device is characterized by including the above-mentioned battery.

[0040] According to the electrical device of the present application, by providing a water accumulation tank on the box body of the battery, a float floatingly installed at the water outlet of the water accumulation tank, and a drain pipe connected to the water outlet, it is possible to automatically drain the excess moisture on the surface of the box body without affecting the normal use of the battery, keep the box body dry and clean, reduce the potential corrosion and short-circuit risks, and also help to optimize the space utilization inside the box body.

[0041] Some of the additional aspects and advantages of the present application will be given in the following description, some will become obvious from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The above and / or additional aspects and advantages of the present application will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0043] Figure 1 is a schematic structural diagram of a box body assembly provided by an embodiment of the present application;

[0044] Figure 2 is Figure 1 a partial enlarged view of part A in

[0045] Figure 3 is a schematic structural diagram of a sealing cover provided by an embodiment of the present application;

[0046] Figure 4 is a partial schematic diagram of the cooperation between the sealing cover and the drainage structure provided by an embodiment of the present application;

[0047] Figure 5 is a partial cross-sectional view of the cooperation between the sealing cover and the drainage structure provided by an embodiment of the present application;

[0048] Figure 6 is a schematic structural diagram of the cooperation between the box body and the drainage section provided by an embodiment of the present application.

[0049] Reference Signs:

[0050] 100, box body;

[0051] 110, lower box body; 1101, drainage port; 1102, installation part;

[0052] 120, sealing cover;

[0053] 121, sunk groove; 1211, inspection port;

[0054] 122. Water collecting trough; 130. Inspection cover;

[0055] 210. Float;

[0056] 221. Guide section;

[0057] 222. Drainage section; 2221. Limiting part;

[0058] 230. Elastic member; 240. First connecting rod; 250. Second connecting rod;

[0059] 260. First seal; 270. Second seal; 280. Third seal; 290. Pipe cover;

[0060] 300. Heating element; 400. Probe; 500. First fastener; 600. Second fastener; 700. Gasket; 800. Heat conducting member; 900. Docking plug. Detailed implementation manners

[0061] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.

[0062] Below, refer to Figures 1-6 to describe the box body assembly provided by the embodiment of the present application. The box body 100 is applied to a battery, and the box body assembly includes the box body 100 and a drainage structure.

[0063] The box body 100 forms a receiving cavity and a water collecting trough 122, and the bottom of the water collecting trough 122 forms a water outlet. It should be noted that the sizes and shapes of the receiving cavity, the water collecting trough 122, and the water outlet can be designed according to actual needs, and the present embodiment does not make specific limitations thereto.

[0064] It can be understood that the receiving cavity is used to install the battery cells and the distribution box, and the battery cells are electrically connected to the distribution box. Since the distribution box includes various components, integrating the distribution box and the battery cells in the box body 100 avoids the safety hazards caused by the external placement of the distribution box and reduces the risk of electric leakage and electrification of the distribution box. At the same time, the distribution box is arranged in the receiving cavity, which can improve the utilization rate of the placement space, and further improve the space utilization rate of the electrical device. The water collecting trough 122 is used to collect the moisture flowing into the interior of the box body 100.

[0065] It should be noted that the distribution box can be, but is not limited to, a high-voltage distribution box. The distribution box includes a plurality of components. The plurality of components can be components such as a power distribution unit (PDU), a battery disconnect unit (BDU), a battery management system (BMS), a manual service disconnect (MSD), or a relay, etc., which are used to control functions such as power generation, power transmission, power distribution, or power conversion of the battery cells.

[0066] The drainage structure includes a float 210 and a drain pipe. The float 210 is floatingly installed at the water outlet for selectively blocking the water outlet. The drain pipe is connected to the water outlet and at least partially located in the accommodation cavity. The shape of the float includes, but is not limited to, a spherical shape.

[0067] It can be understood that the float 210 floats relative to the water outlet to selectively block or open the water outlet according to the change of the water level in the water accumulation tank 122. That is, when the water level rises to the threshold due to rainfall or the water passing through the electrical device, etc., the float 210 rises and opens the water outlet, so that the water in the water accumulation tank 122 flows out of the accommodation cavity through the drain pipe, automatically and timely discharging the accumulated water on the box body 100, reducing safety risks such as short circuit or corrosion of the battery caused by external accumulated water; when the water level drops, the float 210 drops and blocks the water outlet, thus minimizing the possibility of external impurities and moisture entering the box body 100, ensuring the dryness and cleanliness inside the box body 100. In addition, at least part of the drain pipe is arranged in the accommodation cavity, so that part of the drain pipe will pass through the outer wall of the box body 100 and enter the accommodation cavity to cooperate with the water outlet, in order to better guide the flow of the accumulated water, reduce the residence time of the accumulated water inside the box body 100, reduce potential corrosion and short circuit risks, and also help to optimize the space utilization inside the box body 100.

[0068] According to the box body assembly provided by the embodiment of the present application, by arranging a water accumulation tank 122 in the box body 100, a float 210 floatingly installed at the water outlet of the water accumulation tank 122, and a drain pipe connected to the water outlet, the excess water on the surface of the box body 100 can be automatically removed without affecting the normal use of the battery, keeping the box body 100 dry and clean, reducing potential corrosion and short circuit risks, and also helping to optimize the space utilization inside the box body 100.

[0069] In some embodiments, as Figure 5 shown, the drainage structure further includes an elastic member 230. The two ends of the elastic member 230 are respectively connected to the float 210 and the drain pipe, and are used to drive the float 210 close to the water outlet. The elastic member 230 includes, but is not limited to, a spring.

[0070] It can be understood that one end of the elastic member 230 is connected to the lower end of the float 210, and the other end is connected to the drain pipe, so as to transmit force between the float 210 and the drain pipe, enhancing the response ability of the drainage structure to water level changes. That is, when the water level rises to the threshold, the float 210 rises and opens the water outlet, while driving the elastic member 230 to deform, so that the water in the water collecting tank 122 flows out of the accommodating cavity through the drain pipe; when the water level drops, the float 210 drops, and at the same time, a closing force is provided by the resilience of the elastic member 230 itself to ensure that the water outlet is effectively closed, guaranteeing the sealing performance inside the box body 100. Therefore, the rise and fall of the float 210 can be controlled more precisely, ensuring that the water outlet is opened in time when needed and can be quickly closed when the water level drops.

[0071] In some embodiments, as Figure 5 shown, the drainage structure further includes a first connecting rod 240 and a second connecting rod 250. Both ends of the first connecting rod 240 are respectively connected to the inner wall of the drain pipe; both ends of the second connecting rod 250 are respectively connected to the inner wall of the drain pipe, and the first connecting rod 240 and the second connecting rod 250 are cross-connected; wherein, the end of the elastic member 230 away from the float 210 is respectively connected to the first connecting rod 240 and the second connecting rod 250. The connection method between the first connecting rod 240 and the drain pipe and the connection direction between the second connecting rod 250 and the drain pipe include but are not limited to welding.

[0072] It can be understood that both ends of the first connecting rod 240 and the second connecting rod 250 are fixed on the inner wall of the drain pipe, and the cross-connection of the first connecting rod 240 and the second connecting rod 250 provides better mechanical stability and adjustment ability, reducing mechanical failures caused by water flow fluctuations in the drain pipe. At the same time, since the elastic member 230 is often in the shape of a cylindrical helix, by making the end of the elastic member 230 away from the float 210 be able to be connected to both ends of the outer wall of the first connecting rod 240 and both ends of the outer wall of the second connecting rod 250 at the same time, more stable force transmission and more uniform stress distribution are provided, and as much as possible, the deformation direction of the elastic member 230 is made consistent with the orientation of the water outlet.

[0073] In some embodiments, as Figure 5 shown, the first connecting rod 240 and the second connecting rod 250 are perpendicularly cross-connected, that is, the first connecting rod 240 and the second connecting rod 250 are connected to form a cross-shaped structure, so as to improve the structural stability, reducing the possibility of displacement or deformation caused by water flow impact or mechanical vibration, and helping to balance the forces from different directions to ensure the smooth movement of the float 210 in the vertical direction.

[0074] In some embodiments, as Figure 5As shown, the elastic member 230 is hooked to the float 210, and the elastic member 230 is welded to the first connecting rod 240 and the second connecting rod 250 respectively, which not only facilitates the replacement of the float 210, but also ensures the stability and durability at the middle part of the drain pipe, and reduces the possibility of loosening of the corresponding connection points between the first connecting rod 240, the second connecting rod 250, the spring and the drain pipe caused by the up and down floating of the float 210 or the water pressure change in the drain pipe as much as possible.

[0075] In some embodiments, such as Figure 2 , Figures 4-6 As shown, the accommodating cavity has a drain port 1101 communicating with the outside. The drain pipe includes a guiding section 221 and a draining section 222. The guiding section 221 extends along the orientation of the water outlet. One end of the guiding section 221 is hermetically arranged at the outer edge of the water outlet, and the guiding section 221 is adapted to slidably cooperate with the float 210; One end of the draining section 222 is hermetically sleeved outside the other end of the guiding section 221, and the other end of the draining section 222 is hermetically arranged at the drain port 1101.

[0076] It can be understood that the guiding section 221 extends along the orientation of the water outlet, that is, when the water level drops, the float 210 partially extends into the guiding section 221, and when the water level rises, the float 210 disengages from the guiding section 221 to realize the blocking or opening of the water outlet. The upper end of the guiding section 221 is hermetically arranged at the outer edge of the water outlet, that is, while the float 210 plays a role in guiding the water flow, it avoids the accumulated water from leaking from the connection between the guiding section 221 and the water outlet into the accommodating cavity. One end of the draining section 222 is hermetically sleeved outside the other end of the guiding section 221, reducing the possibility of leakage when the water flow flows from the guiding section 221 into the draining section 222 as much as possible. The other end of the draining section 222 is hermetically arranged at the drain port 1101, ensuring that the accumulated water can be safely discharged from the accommodating cavity to the outside of the box body 100, reducing the safety risk of the battery caused by the accumulated water, and ensuring the efficient drainage and overall safety performance of the box body 100 in the face of the accumulated water situation.

[0077] In this embodiment, such as Figure 5 As shown, both the first connecting rod 240 and the second connecting rod 250 are arranged in the guiding section 221.

[0078] In some embodiments, such as Figure 6 As shown, the box body 100 has an installation part 1102 in the accommodating cavity. The installation part 1102 forms a limiting hole. The upper end part of the draining section 222 protrudes radially to form a limiting part 2221 that cooperates with the limiting hole, so that the end cross section of the draining section 222 is in a T shape, ensuring the accurate positioning of the draining section 222 and its installation at an appropriate position in the accommodating cavity, and ensuring the stability of the connection with the guiding section 221 even when the draining section 222 is a flexible pipe, and reducing the risk of the connection falling off or leaking due to movement or vibration.

[0079] In some embodiments, such asFigure 5 As shown, the drainage structure further includes a first seal 260, which is sleeved on the outer wall of the float 210 and is adapted to abut against the inner edge of the water outlet. The first seal 260 includes, but is not limited to, a rubber ring.

[0080] It can be understood that the first seal 260 is sleeved on the outer wall of the float 210. When the float 210 moves downward at the water outlet, the first seal 260 contacts the inner edge of the water outlet, preventing water from leaking through the gap between the float 210 and the water outlet, thereby providing stable sealing performance. In addition, the rubber ring has excellent elasticity and flexibility, can maintain the seal when the float 210 moves, resist water pressure and environmental influences at the same time, and is also convenient for installation and replacement, which helps to maintain the long-term operation and performance of the drainage system.

[0081] In some embodiments, as Figure 4 and Figure 5 shown, the drainage structure further includes a second seal 270, which is sleeved on the outer wall portion of the guiding section 221 away from the water outlet and abuts against the inner wall of the drainage section 222. The second seal 270 includes, but is not limited to, a double O-ring seal.

[0082] It can be understood that the second seal 270 abuts against the inner wall of the drainage section 222 and the outer wall of the guiding section 221 respectively, forming a sealed state to prevent accumulated water from leaking from the connection between the guiding section 221 and the drainage section 222 into the accommodation cavity. In addition, the double O-ring seal is formed by connecting two O-rings through a thin plate, and the elastic deformation and mutual compression of the O-rings can be utilized to improve the sealing effect.

[0083] In some embodiments, as Figure 2 and Figure 6 shown, the drainage structure further includes a third seal 280, which is sleeved on the outer wall of the drainage section 222 and abuts against the inner edge of the drain opening 1101. The third seal 280 includes, but is not limited to, a double O-ring seal.

[0084] It can be understood that the third seal 280 abuts against the outer wall of the drainage section 222 and the inner wall of the drain opening 1101 respectively, forming a sealed state to prevent accumulated water from leaking from the connection between the drainage section 222 and the drain opening 1101 into the accommodation cavity. In addition, the double O-ring seal is formed by connecting two O-rings through a thin plate, and the elastic deformation and mutual compression of the O-rings can be utilized to improve the sealing effect.

[0085] Of course, in some other embodiments, the outer wall of the drainage section 222 and the inner wall of the drain opening 1101 can also be welded together to improve the sealing performance of the connection between the drainage section 222 and the box body 100 and enhance the protection performance of the accommodation cavity.

[0086] In some embodiments, such as Figure 2 and Figure 6 shown, the drainage structure further includes a pipe cover 290, which is sleeved outside one end of the drain pipe away from the water outlet, and a plurality of through holes are formed in the pipe cover 290. The connection manner between the pipe body 290 and the drain pipe includes but is not limited to threaded connection or snap connection, etc. It should be noted that the number and size of the through holes can be designed according to actual needs, and this embodiment does not make specific limitations on this.

[0087] It can be understood that the pipe cover 290 is sleeved outside one end of the drainage section 222 away from the guiding section 221, and a plurality of through holes parallel to the orientation of the water outlet 1101 are formed in the pipe cover 290, so that while allowing water to flow out of the box body 100 through the through holes from the drain pipe, the possibility of sundries entering the drain pipe reversely through the drainage section 222 at the water outlet 1101 can be reduced as much as possible, and the risk of drain pipe blockage is reduced.

[0088] In some embodiments, such as Figure 4 and Figure 5 shown, the box body assembly further includes a heating element 300 and at least a pair of probes 400. The heating element 300 is arranged in the accommodation cavity and is arranged close to the bottom of the water accumulation tank 122; one end of the probe 400 is located in the accommodation cavity and is electrically connected to the heating element 300, and the other end of the probe 400 passes through the bottom of the water accumulation tank 122 and extends into the water accumulation tank 122. The heating element 300 includes but is not limited to a heating film, and the heating film is attached to the inner top wall of the accommodation cavity corresponding to the bottom of the water accumulation tank 122.

[0089] It can be understood that the heating element 300 is arranged at the bottom of the accommodation cavity close to the water accumulation tank 122, and one end of the probe 400 is located in the accommodation cavity and is electrically connected to the heating element 300, and the other end passes through the bottom of the water accumulation tank 122 and extends into the water accumulation tank 122. When there is accumulated water in the water accumulation tank 122, an electrically conductive signal is transmitted between the probes 400 to the control chip in the distribution box. Since one end of the heating element 300 away from the probe 400 is adapted to be connected to the low-voltage power supply of the electrical device through the plug-in 900, the control chip sends a signal to control the low-voltage power supply to connect the heating element 300, and then heats and evaporates the accumulated water in the water accumulation tank 122. On the one hand, when the accumulated water in the water accumulation tank 122 is less, the float 210 cannot open the water outlet, and the heating element 300 can timely treat the accumulated water in the water accumulation tank 122, and even reduce the possibility of the accumulated water freezing in the water accumulation tank 122 due to cold weather, so as to adapt to different environmental conditions; on the other hand, while the accumulated water in the water accumulation tank 122 is discharged through the drain pipe, the heating element 300 can also be used to accelerate the evaporation speed of the accumulated water, thereby accelerating the entire drainage process.

[0090] In some embodiments, such as Figure 4 and Figure 5As shown, a first mounting hole is formed in the bottom of the water accumulation tank 122. The first mounting hole and the water outlet are arranged at intervals. The heating element 300 is provided with a second mounting hole corresponding to the first mounting hole. The box body assembly further includes a first fastener 500 and a second fastener 600. The first fastener 500 is located inside the water accumulation tank 122 and is disposed outside the first mounting hole. The first fastener 500 is provided with a notch communicating with the water accumulation tank 122. One end of the second fastener 600 sequentially passes through the second mounting hole and the first mounting hole and is threadedly connected to the first fastener 500. One end of the probe 400 is inserted into the second fastener 600 and extends to the notch. It should be noted that the shapes and sizes of the first mounting hole and the second mounting hole can be designed according to actual needs, and no specific limitations are made in this embodiment.

[0091] It can be understood that the first mounting hole and the water outlet are arranged at intervals, thereby reducing the possibility of installation interference between the drain pipe and the probe 400, and also avoiding the influence of the discharged water in the drain pipe on the probe 400 and the heating element 300, ensuring that the heating element 300 can effectively heat the accumulated water in the water accumulation tank 122, and at the same time cooperate with the drainage structure to improve the drainage efficiency. The first fastener 500 is located inside the water accumulation tank 122 and is threadedly connected to the second fastener 600. One end of the probe 400 is inserted into the second fastener 600 and extends to the notch, thereby ensuring that the probe 400 can obtain an electrically conductive signal when there is accumulated water in the water accumulation tank 122, improving the sealing performance at the first mounting hole, reducing the possibility that the accumulated water will flow into the accommodation cavity from the first mounting hole, and also making the components for realizing the heating function of the water accumulation tank 122 more compact.

[0092] Exemplarily, the first fastener 500 includes a welding nut, and the second fastener 600 is a plastic bolt.

[0093] In some embodiments, such as Figure 4 and Figure 5 shown, the box body assembly further includes a sealing gasket 700. The sealing gasket 700 is sleeved outside the second fastener 600 and abuts against the heating element 300 to provide additional sealing, ensuring that the water in the water accumulation tank 122 does not penetrate into the heating element 300 or the accommodation cavity, thereby reducing the risk of potential electrical faults or short circuits.

[0094] In some embodiments, such as Figure 5 shown, the box body assembly further includes a heat conducting member 800. The heat conducting member 800 is located in the accommodation cavity and is disposed on the side of the heating element 300 close to the water accumulation tank 122, which helps to improve the efficiency of heat energy transfer, accelerate the evaporation process of the accumulated water in the water accumulation tank 122, and helps to more evenly distribute the heat generated by the heating element 300. The heat conducting member 800 includes but is not limited to heat conducting gel or heat conducting gasket, etc.

[0095] In some embodiments, such asFigures 1-3 As shown in the figure, the box body 100 includes a lower box body 110, a sealing cover 120 and a maintenance cover 130. The upper end of the lower box body 110 has an open mouth; the sealing cover 120 is covered at the open mouth. The sealing cover 120 is provided with a sunken groove 121 and a water accumulation groove 122. A maintenance opening 1211 spaced from the water accumulation groove 122 is provided at the bottom of the sunken groove 121. The bottom of the water accumulation groove 122 is lower than the bottom of the sunken groove 121, and the water accumulation groove 122 communicates with the sunken groove 121; the maintenance cover 130 is installed in the sunken groove 121 for closing the maintenance opening 1211. It should be noted that the shapes and sizes of the open mouth, the maintenance opening 1211 and the sunken groove 121 can be designed according to actual needs, and the present embodiment does not make specific limitations on this.

[0096] It can be understood that the upper end of the lower box body 110 has an open mouth so as to put a distribution box and battery cells through the open mouth. The drain port 1101 is opened on the side wall of the lower box body 110. The sealing cover 120 is covered at the open mouth to jointly form a receiving cavity, which plays a role in closing the box body 100. At the same time, by providing the sunken groove 121 and arranging the maintenance opening 1211 at the bottom of the sunken groove 121, it is convenient to repair and maintain the components inside the receiving cavity, and the maintenance cover 130 is installed in the sunken groove 121 to play a role in closing the maintenance opening 1211, maintaining the sealing performance and integrity of the box body 100.

[0097] In addition, considering that there is an assembly error between the maintenance cover 130 and the sunken groove 121, it is easy for water to enter the receiving cavity through the maintenance opening 1211 at the connection between the maintenance cover 130 and the sunken groove 121. Therefore, the water accumulation groove 122 is communicated with the sunken groove 121 and arranged at an interval from the maintenance opening 1211, and the bottom of the water accumulation groove 122 is lower than the bottom of the sunken groove 121, which helps to control the water to flow into the water accumulation groove 122 after entering the sunken groove 121, reducing the possibility of water directly entering the receiving cavity through the maintenance opening 1211.

[0098] In some embodiments, the bottom of the sunken groove 121 slopes downward in the direction close to the water accumulation groove 122, which helps to use gravity to guide the water to flow along the bottom of the sunken groove 121 to the water accumulation groove 122, improving the drainage efficiency, and thus also reducing the possibility of water accumulating at the bottom of the sunken groove 121, reducing the corrosion or potential electrical risks caused by water accumulation.

[0099] The embodiment of the present application also provides a battery. The battery includes a plurality of battery cells and the above-mentioned box body assembly, and the battery cells are installed in the box body assembly. It should be noted that the number and specifications of the battery cells can be designed according to actual needs, and the present embodiment does not make specific limitations on this.

[0100] It should be noted that the battery cells mentioned in the embodiments of the present application may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, magnesium-ion batteries, etc., and the embodiments of the present application are not limited thereto. The battery cells can be in the shape of a cylinder, a flat body, a cuboid or other shapes, and the embodiments of the present application are not limited thereto either. Generally, the battery cells are divided into three types according to the encapsulation method: cylindrical battery cells, square battery cells and soft-pack battery cells, and the embodiments of the present application are not limited thereto.

[0101] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack, etc. Generally, the battery includes a box body 100 for encapsulating one or more battery cells or multiple battery modules. The box body 100 can prevent liquids or other foreign objects from affecting the charging or discharging of the battery cells.

[0102] According to the battery provided by the embodiments of the present application, by providing a water accumulation groove 122 in the box body 100 of the box body assembly, a float 210 floatingly installed at the water outlet of the water accumulation groove 122, and a drain pipe connected to the water outlet, the excess moisture on the surface of the box body 100 can be automatically removed without affecting the normal use of the battery, keeping the box body 100 dry and clean, reducing the potential corrosion and short-circuit risks, and also helping to optimize the space utilization inside the box body 100.

[0103] The embodiments of the present application also provide an electrical device including the above-mentioned battery.

[0104] It should be noted that the electrical devices include but are not limited to mobile phones, laptop computers, electric toys, electric tools, battery cars, ships, spacecrafts, vehicles and energy storage systems, etc. Among them, the electric toys can include fixed or mobile electric toys, for example, game consoles, electric vehicle toys, electric ship toys, electric plane toys, etc.; the spacecrafts can include airplanes, rockets, space shuttles, spaceships, etc.; the vehicles can include electric vehicles or rail trains; the energy storage systems can include energy storage containers and energy storage power stations, etc.

[0105] According to the electrical device provided by the embodiments of the present application, by providing a water accumulation groove 122 in the box body 100 of the battery, a float 210 floatingly installed at the water outlet of the water accumulation groove 122, and a drain pipe connected to the water outlet, the excess moisture on the surface of the box body 100 can be automatically removed without affecting the normal use of the battery, keeping the box body 100 dry and clean, reducing the potential corrosion and short-circuit risks, and also helping to optimize the space utilization inside the box body 100.

[0106] The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of this application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same category, and do not limit the number of objects. For example, the first object can be one or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.

[0107] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0108] In the description of this application, "the first feature", "the second feature" may include one or more of such features.

[0109] In the description of this application, "a plurality" means two or more.

[0110] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween.

[0111] In the description of this application, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher horizontal level than the second feature.

[0112] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0113] Although embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A box assembly, applied to a battery, characterized in that, The box assembly includes: A box body that forms a receiving cavity and a water accumulation tank, and a water outlet is formed at the bottom of the water accumulation tank; A drainage structure, the drainage structure includes a float and a drain pipe, the float is floatingly installed at the water outlet for selectively blocking the water outlet, and the drain pipe is connected to the water outlet and at least partially located in the receiving cavity.

2. The cabinet assembly according to claim 1, wherein, The drainage structure further includes: An elastic member, with both ends of the elastic member respectively connected to the float and the drain pipe, for driving the float close to the water outlet.

3. The cabinet assembly according to claim 2, wherein The drainage structure further includes: A first connecting rod, with both ends of the first connecting rod respectively connected to the inner wall of the drain pipe; A second connecting rod, with both ends of the second connecting rod respectively connected to the inner wall of the drain pipe, and the first connecting rod and the second connecting rod are cross-connected; wherein, the end of the elastic member away from the float is respectively connected to the first connecting rod and the second connecting rod.

4. The cabinet assembly according to claim 1, wherein The receiving cavity has a drainage port communicating with the outside, and the drain pipe includes: A guiding section, the guiding section extends along the orientation of the water outlet, one end of the guiding section is sealingly arranged at the outer edge of the water outlet, and the guiding section is adapted to slidably cooperate with the float; A drainage section, one end of the drainage section is sealingly sleeved outside the other end of the guiding section, and the other end of the drainage section is sealingly arranged at the drainage port.

5. The housing assembly according to claim 4, wherein The drainage structure further includes: A first sealing member, sleeved on the outer wall of the float and adapted to abut against the inner edge of the water outlet; and / or A second sealing member, sleeved on the outer wall part of the guiding section away from the water outlet and abutting against the inner wall of the drainage section; and / or A third sealing member, sleeved on the outer wall of the drainage section and abutting against the inner edge of the drainage port.

6. The cabinet assembly according to claim 1, wherein The drainage structure further includes: A pipe cap, sleeved on the end of the drain pipe away from the water outlet, and a plurality of through holes are formed in the pipe cap.

7. The housing assembly according to claim 1, wherein It further includes: A heating member, arranged in the receiving cavity and close to the bottom of the water accumulation tank; At least a pair of probes, one end of the probe is located in the receiving cavity and electrically connected to the heating member, and the other end of the probe passes through the bottom of the water accumulation tank and extends into the water accumulation tank.

8. The cabinet assembly according to claim 7, characterized in that, A first mounting hole is formed in the bottom of the water accumulation tank, the first mounting hole and the water outlet are arranged at intervals, a second mounting hole corresponding to the first mounting hole is formed in the heating member, and the box assembly further includes: A first fastener, located in the water accumulation tank and arranged outside the first mounting hole, and the first fastener is provided with a notch communicating with the water accumulation tank; A second fastener, one end of the second fastener sequentially passes through the second mounting hole and the first mounting hole and is threadedly connected to the first fastener, and one end of the probe passes through the second fastener and extends to the notch.

9. The cabinet assembly according to claim 7, wherein It further includes: A heat conducting member, located in the receiving cavity and arranged on the side of the heating member close to the water accumulation tank.

10. The cabinet assembly according to claim 1, characterized in that, The box body includes: A lower box body, with an open upper end; A sealing cover is provided on the open end. The sealing cover is provided with a sunken groove and the water accumulation groove. An inspection opening spaced from the water accumulation groove is provided at the bottom of the sunken groove. The bottom of the water accumulation groove is lower than the bottom of the sunken groove, and the water accumulation groove communicates with the sunken groove; An inspection cover is installed in the sunken groove for closing the inspection opening.

11. A battery, characterized in that, It includes: Multiple battery cells, and The box body assembly according to any one of claims 1 to 10, and the battery cells are installed in the box body assembly.

12. An electrical device, characterized in that, It includes the battery according to claim 11.

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