Battery liquid injection device

Abstract

The utility model relates to a battery liquid injection device which comprises a liquid storage bin, a liquid injection nozzle and a pressure assembly, the liquid storage bin is located below the liquid injection nozzle, the pressure assembly is communicated with the liquid storage bin, the liquid injection nozzle is communicated with a liquid inlet of a battery, and the pressure assembly is used for providing pressure, so that electrolyte stored in the liquid storage bin flows into the battery through the liquid injection nozzle. The liquid storage bin of the battery liquid injection device is located below the liquid injection nozzle, so that when the device is not pressurized, electrolyte in the liquid storage bin cannot flow out of the liquid injection nozzle, the flowing-out electrolyte is prevented from polluting the device, meanwhile, the pipeline structure is optimized, a valve part for controlling the liquid injection nozzle to be opened and closed is omitted, the electrolyte is prevented from corroding a valve, and the service life of the device is prolonged. The sealing performance of the valve is reduced, and liquid leakage of the valve is further caused.

Description

Technical Field

[0001] The present application relates to the field of battery liquid filling, and in particular to a battery liquid filling device with a liquid filling nozzle located above a liquid storage bin. Background Art

[0002] In the prior art, the liquid storage bin of the battery filling device is located above the liquid filling nozzle, the battery is arranged below the liquid filling nozzle, and the liquid filling nozzle connects the liquid storage bin and the battery. Under the action of gravity, the electrolyte in the liquid storage bin flows into the battery below through the liquid filling nozzle to realize battery filling.

[0003] When not filled, the electrolyte in the liquid storage tank will also flow out due to gravity, and the electrolyte will drip onto the battery or fixture, contaminating the battery surface and the liquid filling device. Generally, a valve is set under the liquid storage tank to control the opening and closing of the liquid filling nozzle, but the electrolyte is highly corrosive. As the use time increases, the sealing effect of the valve decreases, which is prone to leakage. Utility Model Content

[0004] In view of the above-mentioned technical problems, the present application provides the following technical solutions: a battery liquid injection device, comprising a liquid storage tank, a liquid injection nozzle and a pressure assembly, wherein the liquid storage tank is located below the liquid injection nozzle, the pressure assembly is connected to the liquid storage tank, and the liquid injection nozzle is connected to the liquid inlet of the battery. The pressure assembly is used to provide pressure so that the electrolyte stored in the liquid storage tank flows into the battery through the liquid injection nozzle.

[0005] In the battery liquid filling device of the present application, the liquid storage tank is located below the liquid filling nozzle. When the battery liquid filling device is not working, the pressure in the liquid storage tank is normal. Under the action of gravity, the liquid level of the electrolyte stored inside is always lower than the liquid filling nozzle in the vertical direction, and the electrolyte will not flow out of the liquid filling nozzle. When the battery liquid filling device is working, the pressure component provides pressure, so that the electrolyte in the liquid storage tank flows out of the liquid filling nozzle and flows into the battery.

[0006] The battery filling device of the present application ensures that the electrolyte in the liquid storage tank will not flow out from the filling nozzle when not pressurized, thereby preventing the flowing electrolyte from contaminating the device. At the same time, the pipeline structure is optimized, the valve component for controlling the on and off of the filling nozzle is eliminated, and the electrolyte is prevented from corroding the valve, causing the valve sealing to decrease, and then causing the valve to leak.

[0007] In one embodiment, the pressure assembly includes a piston and a driving unit, the piston extends into the liquid storage tank, and the driving unit is used to drive the piston to move.

[0008] In this embodiment, a piston and a driving assembly are used to provide pressure for the electrolyte in the liquid storage tank, so that the electrolyte can flow into the battery through the liquid injection nozzle.

[0009] In one embodiment, the liquid storage tank includes a liquid outlet, which is located on a side of the liquid storage tank away from the pressure assembly, and the liquid outlet is connected to the liquid injection nozzle.

[0010] In this embodiment, a liquid outlet is provided on the other side of the liquid storage tank relative to the piston and the driving assembly, and the liquid outlet is connected to the liquid injection nozzle so that the pressurized electrolyte can flow out from the liquid injection nozzle.

[0011] In one embodiment, the pressure assembly includes a hydraulic pump, which is located between the liquid storage tank and the liquid injection nozzle.

[0012] In this embodiment, a hydraulic pump is used to provide pressure for the electrolyte in the liquid storage tank, so that the electrolyte can flow into the battery through the liquid injection nozzle.

[0013] In one embodiment, the liquid storage bin includes a liquid outlet, which is located at the bottom of the liquid storage bin along the vertical direction, and the liquid storage bin is connected to the liquid injection nozzle.

[0014] In this embodiment, the liquid outlet is arranged at the bottom of the liquid storage tank, so that the electrolyte flows to the hydraulic pump through the liquid outlet under the action of gravity.

[0015] In one embodiment, the bottom of the liquid storage bin includes an inclined surface inclined toward the liquid outlet; or the bottom of the liquid storage bin includes an arc surface, and the liquid outlet is located at the top of the arc surface.

[0016] In this embodiment, the bottom of the liquid storage bin is provided with an inclined surface inclined toward the liquid outlet, so that the electrolyte flows into the liquid outlet along the inclined surface under the action of gravity; or the bottom of the liquid storage bin is provided with an arc surface, and the liquid outlet is located at the top of the arc surface, so that the electrolyte flows into the liquid outlet at the top of the arc along the arc under the action of gravity. Both of the above settings can realize that the electrolyte flows into the liquid outlet under the action of gravity, which is convenient for draining the electrolyte in the liquid storage bin.

[0017] In one embodiment, the battery liquid filling device includes an adjusting mechanism, which is connected to the liquid filling nozzle and is used to adjust the position of the liquid filling nozzle so that the liquid filling nozzle is docked with the liquid inlet.

[0018] In this embodiment, the adjustment mechanism can adjust the position of the liquid injection nozzle relative to the battery so that the liquid injection nozzle is docked with the liquid inlet, which facilitates the subsequent cooperation between the liquid injection nozzle and the liquid inlet.

[0019] In one embodiment, the battery filling device includes a base having an inner cavity, and the liquid storage tank is located in the inner cavity.

[0020] In this embodiment, the battery liquid filling device includes a base, the base has an inner cavity, and the liquid storage tank is located in the inner cavity.

[0021] In one embodiment, the battery filling device includes a clamping mechanism, which is fixed to the base and located above the inner cavity in the vertical direction. The clamping mechanism moves toward the filling nozzle to clamp the battery and connect the filling nozzle with the liquid inlet of the battery.

[0022] In this embodiment, the clamping mechanism drives the battery to move toward the injection nozzle, so that the liquid inlet of the battery is connected to the injection nozzle, and the battery is fixed between the clamping mechanism and the base. The clamping mechanism is located above the liquid storage bin in the vertical direction, so that the battery is located above the liquid storage bin to ensure that the electrolyte in the liquid storage bin does not flow out when the battery injection device is not working, thereby preventing the electrolyte from contaminating the battery and the injection device.

[0023] In one embodiment, the base includes a positioning block, the positioning block is provided with a positioning groove for fixing the battery, and the positioning block is located between the liquid injection nozzle and the clamping mechanism.

[0024] In this embodiment, the base is provided with a positioning block located between the injection nozzle and the clamping mechanism, and the battery is arranged in the positioning groove of the positioning block. The positioning groove can accommodate the battery and limit the movement of the battery, so that the clamping mechanism can clamp the battery.

[0025] In one embodiment, there are multiple injection nozzles, which are arranged side by side. The positioning block has multiple positioning grooves, which are arranged side by side. Each positioning groove is used to limit a battery. The clamping mechanism is used to clamp multiple batteries, so that the multiple injection nozzles are connected to the liquid inlet of a battery respectively.

[0026] In this embodiment, there are multiple injection nozzles and positioning grooves and they are arranged side by side, so that the positioning grooves and clamping devices of the positioning block can simultaneously restrict multiple batteries. The multiple injection nozzles are respectively connected to a battery liquid inlet, so that the battery injection device can inject liquid into multiple batteries at the same time.

[0027] In one embodiment, there are multiple positioning blocks, the injection nozzle, multiple positioning blocks and the clamping mechanism are arranged in sequence, and the positioning grooves of each positioning block are linearly aligned with the center lines of the injection nozzle and the clamping mechanism along the arrangement direction to restrict the same battery.

[0028] In this embodiment, a plurality of positioning blocks are located between the injection nozzle and the clamping mechanism, and the positioning grooves of the plurality of positioning blocks are linearly aligned with the center line of the injection nozzle and the clamping mechanism along the center line of the arrangement direction of the injection nozzle and the clamping mechanism, so as to restrict the same battery. Providing a plurality of positioning blocks and positioning grooves for the same battery makes the battery fixation more reliable.

[0029] In one embodiment, the adjustment mechanism includes a vertical adjustment mechanism and a horizontal adjustment mechanism, the vertical adjustment mechanism is used to adjust the distance between the injection nozzle and the liquid inlet along the vertical direction, and the horizontal adjustment mechanism is used to adjust the distance between the injection nozzle and the liquid inlet along the horizontal direction.

[0030] In this embodiment, the distance between the liquid injection nozzle and the liquid inlet in the vertical and horizontal directions is adjusted respectively by the vertical adjustment mechanism and the horizontal adjustment mechanism, so that the liquid injection nozzle is docked with the liquid inlet.

[0031] In one embodiment, the clamping mechanism includes a clamping claw, which is used to clamp the side wall of the battery to limit the movement of the battery in the horizontal direction.

[0032] In this embodiment, the clamping claws contact the side wall of the battery to limit the horizontal movement of the battery relative to the base, so as to fix the battery.

[0033] In one embodiment, the clamping mechanism includes a pressing block movably connected to the base for limiting the movement of the battery in the vertical direction.

[0034] In this embodiment, the pressing block contacts the battery, restricting the movement of the battery relative to the base in the vertical direction, so as to fix the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic structural diagram of a battery liquid filling device 100 provided in one embodiment of the present application;

[0036] Figure 2 A partial structural schematic diagram of a battery liquid filling device 100 provided in one embodiment of the present application;

[0037] Figure 3 It is a partial structural schematic diagram of a battery liquid filling device 100 with a battery installed provided in an embodiment of the present application. DETAILED DESCRIPTION

[0038] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thoroughly and comprehensively understood.

[0039] The following descriptions of the embodiments are with reference to the attached diagrams to illustrate specific embodiments that the present application can be used to implement. The serial numbers for the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present application, unless otherwise specified, include direct and indirect connections (couplings). The directional terms mentioned in the present application, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the present application, 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 cannot be understood as a limitation to the present application.

[0040] The present application relates to a battery liquid injection device, which is used for fixing a battery and injecting electrolyte into the battery.

[0041] See also Figure 1 Schematic diagram of the structure of a battery liquid filling device 100.

[0042] The battery liquid injection device 100 provided in the present application includes a liquid storage tank 31, a liquid injection nozzle 32 and a pressure assembly 33. The liquid storage tank 31 is located below the liquid injection nozzle 32, and the liquid storage tank 31 is connected to the pressure assembly 33. The liquid injection nozzle 32 is connected to the liquid inlet of the battery, and the pressure assembly 33 is used to provide pressure so that the electrolyte stored in the liquid storage tank 31 flows into the battery through the liquid injection nozzle 32.

[0043] That is, in the battery filling device 100 of the present application, the filling nozzle 32 is connected to the liquid inlet of the battery, and the filling nozzle 32 is located above the liquid storage tank 31. Under the action of gravity, the electrolyte level in the liquid storage tank 31 is always lower than the filling nozzle 32, ensuring that the electrolyte in the battery filling device 100 will not flow out. The pressure component 33 provides pressure for the electrolyte in the liquid storage tank 31. The pressure in the liquid storage tank 31 is higher than the internal pressure of the battery, forming a pressure difference, so that the electrolyte in the liquid storage tank 31 can reach the filling nozzle 32 higher than the liquid storage tank 31, and the electrolyte flows into the battery through the filling nozzle 32 to achieve battery filling.

[0044] In the existing battery injection device, the liquid storage tank 31 for storing electrolyte is generally located above the battery injection nozzle 32, and the injection nozzle 32 is connected to the inside of the battery. Under the action of gravity, the electrolyte in the liquid storage tank 31 flows into the battery through the injection nozzle 32 to complete the injection process.

[0045] In order to ensure that the electrolyte does not flow out when the battery filling device 100 is not working, the battery filling device 100 of the present application sets the liquid storage bin 31 below the liquid filling nozzle 32. When the battery filling device 100 is not working, the internal pressure of the liquid storage bin 31 is equal to the external pressure. At this time, under the action of gravity, the liquid level of the electrolyte in the liquid storage bin 31 will always be lower than the position of the liquid filling nozzle 32, so that the electrolyte will not flow out from the liquid filling nozzle 32. When the battery filling device 100 is working, increasing the internal pressure of the liquid storage bin 31 can increase the liquid level of the electrolyte. When the electrolyte level reaches the position of the liquid filling nozzle 32, the electrolyte can flow out from the liquid filling nozzle 32.

[0046] Specifically, in one embodiment, Figure 1 In the schematic diagram, there are multiple injection nozzles 32 and liquid storage bins 31, and multiple injection nozzles 32 and liquid storage bins 31 are arranged side by side, and each injection nozzle 32 and liquid storage bin 31 is used for injecting liquid into one battery. One injection nozzle 32 is connected between one liquid storage bin 31 and one battery, so that the battery injection device can inject liquid into multiple batteries at the same time, thereby improving the injection efficiency of the battery.

[0047] In other embodiments, the number of the filling nozzles 32 and the liquid storage bins 31 in the battery filling device 100 can be arbitrarily set based on the required battery filling efficiency.

[0048] See also Figure 2 A schematic diagram of a partial structure of a battery filling device 100 is shown.

[0049] The pressure assembly 33 can be used in two ways to achieve battery injection. In one way, the pressure assembly 33 includes a piston and a drive unit, and in another way, the pressure assembly 33 includes a hydraulic pump. In the above two ways, due to the different working principles of the pressure assembly 33, the positions of the pressure assembly 33 relative to the liquid storage tank 31 are different, but both ways can drive the electrolyte to flow by pressure, so that the electrolyte can overcome the effect of gravity and achieve the purpose of the electrolyte in the liquid storage tank 31 flowing into the battery from the injection nozzle 32. At the same time, because the pressure assembly 33 adopts different ways and is set at different positions, the other components of the battery injection device 100 also have different settings.

[0050] In one embodiment, the pressure assembly 33 of the battery filling device 100 uses the above-mentioned "piston and driving unit" to drive the electrolyte to achieve battery filling.

[0051] Specifically, the piston extends into the liquid storage tank 31, and the driving unit is used to drive the piston to move. The piston movement increases the internal pressure of the liquid storage tank 31, and a pressure difference is formed between the inside of the liquid storage tank 31 and the inside of the battery, so that the electrolyte flows from the inside of the liquid storage tank 31 with a higher pressure to the inside of the battery with a lower pressure, thereby achieving the purpose of the electrolyte in the liquid storage tank 31 flowing into the battery through the liquid injection nozzle 32.

[0052] In one embodiment, if Figure 2 As shown, the liquid storage tank 31 includes a liquid outlet 311, which is located on the side of the liquid storage tank 31 away from the piston, and the liquid outlet 311 is connected to the liquid injection nozzle 32. The liquid storage tank 31 is provided with the liquid outlet 311 on the other side relative to the pressure component 33, and the liquid outlet 311 is connected to the liquid injection nozzle 32. After the pressure component 33 changes the internal pressure of the liquid storage tank 31, a pressure difference is formed between the inside of the liquid storage tank 31 and the inside of the battery, so that the electrolyte can flow out from the liquid outlet 311 on the other side of the liquid storage tank 31, and then flow into the battery from the liquid injection nozzle 32.

[0053] In one embodiment, the pressure component 33 of the battery filling device 100 adopts another method described above, that is, the pressure component 33 adopts a "hydraulic pump" to drive the electrolyte to achieve battery filling.

[0054] Specifically, the hydraulic pump is disposed between the liquid storage tank 31 and the liquid injection nozzle 32. Under the action of gravity, the electrolyte in the liquid storage tank 31 flows toward the hydraulic pump, and the electrolyte flows to the inlet of the hydraulic pump. The hydraulic pump sucks the electrolyte through the inlet and pressurizes it, and then releases it toward the liquid injection nozzle 32 through the outlet. The pressurized electrolyte overcomes the action of gravity and can reach the liquid injection nozzle 32 above the liquid storage tank 31 and flow out of the liquid injection nozzle 32, thereby realizing the liquid injection of the battery.

[0055] In one embodiment, the liquid storage tank 31 includes a liquid outlet 311, which is vertically arranged at the bottom of the liquid storage tank 31, and the liquid outlet 311 is connected to the liquid injection nozzle 32. The pressure assembly 33 of this embodiment adopts a hydraulic pump, and the liquid outlet 311 is arranged at the bottom of the liquid storage tank 31. Under the action of gravity, the electrolyte flows from the liquid storage tank 31 through the liquid outlet 311 to the inlet of the hydraulic pump, so that the electrolyte flows into the battery through the hydraulic pump.

[0056] In one embodiment, the bottom of the liquid storage bin 31 includes an inclined surface inclined toward the liquid outlet 311. Under the action of gravity, the electrolyte can flow from the inside of the liquid storage bin 31 to the liquid outlet 311 along the inclined surface.

[0057] In another embodiment, the bottom of the liquid storage tank 31 includes an arc surface, and the liquid outlet 311 is located at the top of the arc surface. Under the action of gravity, the electrolyte can flow from the inside of the liquid storage tank 31 to the liquid outlet 311 along the arc surface.

[0058] In the above embodiment, an inclined surface or an arc surface is set at the bottom of the liquid storage tank 31, so that the electrolyte flows to the liquid outlet 311 under the action of gravity, which can provide electrolyte for the hydraulic pump arranged between the liquid storage tank 31 and the liquid injection nozzle 32, and facilitate the discharge of the electrolyte inside the liquid storage tank 31.

[0059] The specific development of the various embodiments described above can provide pressure for the electrolyte in the liquid storage tank 31, forming a pressure difference between the inside of the liquid storage tank 31 and the inside of the battery, so that the electrolyte overcomes the effect of gravity and reaches the injection nozzle 32 which is higher than the liquid storage tank 31 in the vertical direction, thereby achieving the purpose of the electrolyte in the liquid storage tank 31 flowing into the battery through the injection nozzle 32.

[0060] In one embodiment, the battery filling device 100 includes a base 10 and a clamping mechanism 20, the base 10 includes an inner cavity, a liquid storage bin 31 is located in the inner cavity, and a liquid injection nozzle 32 and a clamping mechanism 20 are located above the inner cavity. The liquid storage bin 31 is located in the inner cavity, and the liquid injection nozzle 32 and the clamping mechanism 20 are located above the inner cavity, so that the liquid injection nozzle 32, the clamping mechanism 20 and the battery are all located above the liquid storage bin 31, so as to ensure that when the battery filling device 100 is not working, the electrolyte in the liquid storage bin 31 will not flow out, so as to prevent the electrolyte from contaminating the battery and the battery filling device 100.

[0061] In one embodiment, if Figure 2 As shown, the liquid injection nozzle 32 is connected to the liquid storage tank 31 through a connecting pipe, and no valve or similar on-off component is provided between the liquid injection nozzle 32 and the liquid storage tank 31. In order to prevent the electrolyte from flowing out, an on-off valve is generally provided between the liquid storage tank 31 and the liquid injection nozzle 32 to control the outflow of the electrolyte by opening and closing the valve.

[0062] It is understandable that the electrolyte is corrosive. As the working time increases, the electrolyte is easy to corrode the valve or similar on-off components, reducing its sealing effect, making it difficult to control the on-off of the injection nozzle 32, and easily causing leakage of the injection nozzle 32. The leaking injection nozzle 32 needs to replace the valve or similar on-off components, which delays the battery injection process and reduces the battery processing efficiency.

[0063] The battery filling device 100 of the present application controls the electrolyte in the liquid storage tank 31 through the pressure component 33. Compared with the general filling device, the pipeline structure is optimized and the components for controlling on and off are omitted. This can prevent the electrolyte from corroding the on and off components and reducing their sealing, thereby causing leakage. At the same time, it can also avoid delaying the battery processing and manufacturing process due to replacement of corroded components.

[0064] In one embodiment, if Figure 2 As shown, a liquid injection nozzle 32 is arranged on the side of the base 10, and a battery liquid inlet fixed to the base 10 is also arranged on the side. The liquid injection nozzle 32 can cooperate with the liquid inlet to complete the liquid injection of the battery.

[0065] In another embodiment, the battery liquid inlet fixed to the base 10 is arranged on the top surface or the bottom surface along the vertical direction, and the specific position of the corresponding liquid injection nozzle 32 on the base 10 can also be set based on the position of the battery liquid inlet, so that the liquid injection nozzle 32 extends into the battery liquid inlet to achieve mutual cooperation between the liquid injection nozzle 32 and the liquid inlet.

[0066] In one embodiment, if Figure 2 As shown, the base 10 is provided with an adjustment mechanism 11, which is connected between the base 10 and the injection nozzle 32 and is used to adjust the position of the injection nozzle 32 so that the injection nozzle 32 is docked with the liquid inlet of the battery. After the battery is fixed to the base 10, the adjustment mechanism 11 can adjust the position of the injection nozzle 32 so that the injection nozzle 32 can match the liquid inlet, which is conducive to the subsequent injection of electrolyte into the battery through the injection nozzle 32.

[0067] It is understandable that the adjustment mechanism 11 can also make the battery filling device 100 compatible with more types and sizes of batteries. Different types of batteries have different sizes, and the positions of the battery liquid inlets are different. When different types of batteries are fixed to the base 10, the distance between the liquid inlet and the filling nozzle 32 is also different. The adjustment mechanism 11 can adjust the distance between the filling nozzle 32 and the liquid inlet so that the filling nozzle 32 is docked with the liquid inlet to achieve the filling of batteries of different sizes.

[0068] In one embodiment, the adjustment mechanism 11 includes a vertical adjustment mechanism and a horizontal adjustment mechanism, wherein the vertical adjustment mechanism is used to adjust the distance between the injection nozzle 32 and the battery liquid inlet in the vertical direction, and the horizontal adjustment mechanism is used to adjust the distance between the injection nozzle 32 and the battery liquid inlet in the horizontal direction. The distances between the injection nozzle 32 and the liquid inlet in the vertical and horizontal directions are adjusted by the vertical adjustment mechanism and the horizontal adjustment mechanism, respectively, so that the injection nozzle 32 is docked with the liquid inlet.

[0069] In one embodiment, the adjustment mechanism 11 includes a nut and a screw, the screw is fixed to the base 10, the nut is rotatably connected to the injection nozzle 32, the nut and the screw cooperate with each other, the nut can move along the thread direction of the screw, so that the injection nozzle 32 can move relative to the base 10, thereby facilitating the docking of the injection nozzle 32 with the liquid inlet of the battery.

[0070] In one embodiment, the thread direction of the screw is vertical, and the nut can move in the vertical direction. In another embodiment, the thread direction of the screw is horizontal, and the nut can move in the horizontal direction. The thread direction of the screw can be arbitrarily set based on the required adjustment direction of the injection nozzle 32.

[0071] In one embodiment, the adjustment mechanism 11 includes a slider and a guide rail, the guide rail is fixed to the base 10, and the slider is fixed to the injection nozzle 32. The slider moves along the length direction of the guide rail, so that the injection nozzle 32 can move relative to the base 10, thereby facilitating the docking of the injection nozzle 32 with the liquid inlet of the battery.

[0072] In one embodiment, the length direction of the guide rail is the vertical direction, and the slider can move in the vertical direction. In another embodiment, the length direction of the guide rail is the horizontal direction, and the slider can move in the horizontal direction. The length direction of the guide rail can be arbitrarily set based on the required adjustment direction of the injection nozzle 32.

[0073] In other embodiments, the adjustment mechanism 11 may also be other mechanisms capable of relative movement, so that the liquid injection nozzle 32 moves relative to the base 10 to facilitate the connection between the liquid injection nozzle 32 and the liquid inlet of the battery.

[0074] See also Figure 3 A schematic diagram of a partial structure of a battery filling device 100 with batteries installed.

[0075] In one embodiment, if Figure 3 As shown, the battery liquid injection device 100 includes a clamping mechanism 20, which is fixed to the base 10 and is located above the inner cavity of the base 10 in the vertical direction. The clamping mechanism 20 moves toward the liquid injection nozzle 32 and drives the battery to move toward the liquid injection nozzle 32, so that the liquid inlet of the battery is connected to the liquid injection nozzle 32. At the same time, the clamping mechanism 20 presses the battery tightly, so that the battery is fixed between the clamping mechanism 20 and the base 10.

[0076] In one embodiment, if Figure 3 As shown, the clamping mechanism 20 includes a clamping jaw 21, which is used to clamp the side walls of multiple batteries to limit the movement of the batteries in the horizontal direction. The battery is installed on the positioning block 12 of the base 10, and one end of the clamping jaw 21 is rotatably connected to the base 10. As the clamping jaw 21 rotates, the other end of the clamping jaw 21 contacts the side wall of the battery, and as the clamping jaw 21 continues to rotate, the clamping jaw 21 pushes the battery toward the injection nozzle 32, so that the injection nozzle 32 extends into the battery liquid inlet and cooperates with the battery liquid inlet. When the injection nozzle 32 is fully matched with the liquid inlet, the clamping jaw 21 stops rotating to form a limit to limit the movement of the battery in the horizontal direction.

[0077] In another embodiment, the clamping mechanism 20 includes a clamping jaw 21, which is movably connected to the base 10, and the clamping jaw 21 moves in a direction toward the battery. During the movement of the clamping jaw 21, the clamping jaw 21 contacts the side wall of the battery, and as the clamping jaw 21 continues to move, the battery is pushed toward the injection nozzle 32, so that the injection nozzle 32 extends into the battery liquid inlet and cooperates with the battery liquid inlet. After the injection nozzle 32 is matched with the liquid inlet, the clamping jaw 21 stops moving, forming a limit to limit the movement of the battery in the horizontal direction.

[0078] In another embodiment, the battery is installed on the positioning block 12 of the base 10, the liquid inlet is located at the top surface or bottom surface of the battery in the vertical direction, and the liquid injection nozzle 32 is set at the corresponding position of the base 10. At this time, the clamping jaw 21 of the clamping mechanism 20 clamps the top surface or bottom surface of the battery in the vertical direction, and the clamping jaw 21 moves in the vertical direction and contacts the battery. The continued movement of the clamping jaw 21 will push the battery to move in the vertical direction toward the liquid injection nozzle 32, so that the liquid injection nozzle 32 extends into the battery liquid inlet and cooperates with the battery liquid inlet.

[0079] In one embodiment, the clamping mechanism 20 includes a plurality of jaws 21, which can respectively clamp the side wall of a battery so that the battery liquid inlet is connected to the liquid injection nozzle 32 and limit the movement of the battery in the horizontal direction. The number of jaws can be set based on the external dimensions of the battery.

[0080] In one embodiment, if Figure 3As shown, the clamping mechanism 20 includes a pressing block 22, which is movably connected to the base 10 to further restrict the movement of the battery. After the clamping jaws 21 clamp the side wall of the battery, the pressing block 22 contacts the top or bottom surface of the battery in the vertical direction, and the pressing block 22 forms a vertical limit for the battery to restrict the movement of the battery in the vertical direction.

[0081] In one embodiment, if Figure 3 As shown, two pressing blocks 22 restrict the movement of one battery. In other embodiments, the number of pressing blocks 22 can be arbitrarily set based on the external dimensions of the battery.

[0082] In another embodiment, after the clamping jaws 21 clamp the top surface or bottom surface of the battery in the vertical direction, the pressing block 22 contacts the side wall of the battery to form a horizontal limit for the battery to limit the movement of the battery in the horizontal direction.

[0083] In one embodiment, the clamping mechanism 20 is provided with an elastic layer, which provides a buffering effect to prevent the clamping mechanism 20 from scratching or squeezing the battery and causing damage to the battery when contacting the battery.

[0084] In other embodiments, the position of the clamping mechanism 20 relative to the base 10 can be set based on the size of the battery to be compatible with more types of batteries. Different types of batteries have different sizes and require different installation spaces. When the battery is installed on the positioning block 12, setting different installation positions of the clamping mechanism 20 can change the distance between the clamping mechanism 20 and the injection nozzle 32, leaving enough installation space, thereby achieving compatibility of the clamping mechanism 20 with different types of batteries.

[0085] In one embodiment, if Figure 3 As shown, the injection nozzle 32, two positioning blocks 12 and the clamping mechanism 20 are arranged in sequence, and the positioning grooves 121 on the two positioning blocks 12 are linearly aligned with the center lines of the injection nozzle 32 and the clamping mechanism 20 along the center lines of the arrangement direction of the injection nozzle 32 and the clamping mechanism 20, and are used to restrict the same battery. When the battery is installed on the positioning block 12, the battery extends into the positioning groove 121. The positioning groove 121 can guide the movement direction of the battery, and can ensure that the battery moves toward the direction of the injection nozzle 32, which is convenient for the clamping mechanism 20 to clamp the battery, and realize the cooperation between the injection nozzle 32 and the battery liquid inlet.

[0086] In other embodiments, the position and number of the positioning blocks can be set based on the shape and size of the battery.

[0087] In one embodiment, the positioning block 12 is provided with an elastic layer, which provides a buffering effect to prevent the battery from being squeezed and collided with the positioning block 12 when the clamping mechanism 20 pushes the battery toward the injection nozzle 32, thereby preventing the battery from being damaged.

[0088] In one embodiment, the shape of the positioning groove 121 matches the shape of the battery. When the battery is installed on the positioning block 12, the positioning groove 121 fits the shape of the battery, which can better limit the movement of the battery.

[0089] In other embodiments, the number, size and shape of the positioning grooves 121 can be set based on the shape and size of the battery to be compatible with more types of batteries. When the battery is installed in the positioning block 12, the size and shape of the positioning grooves 121 can be changed to accommodate batteries of different shapes and sizes, thereby achieving compatibility of the positioning block 12 with batteries of different models.

[0090] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A battery filling device, characterized in that: include: A liquid storage tank, a liquid injection nozzle and a pressure component, wherein the liquid storage tank is located below the liquid injection nozzle, and the pressure component is connected to the liquid storage tank; The injection nozzle is communicated with the liquid inlet of the battery, and the pressure component is used to provide pressure so that the electrolyte stored in the liquid storage tank flows into the battery through the injection nozzle.

2. The battery liquid injection device according to claim 1, characterized in that: The pressure assembly includes a piston and a driving unit. The piston extends into the liquid storage tank, and the driving unit is used to drive the piston to move.

3. The battery liquid injection device according to claim 2, characterized in that: The liquid storage bin comprises a liquid outlet, the liquid outlet is located at a side of the liquid storage bin away from the pressure assembly, and the liquid outlet is communicated with the liquid injection nozzle.

4. The battery liquid injection device according to claim 1, characterized in that: The pressure assembly comprises a hydraulic pump, and the hydraulic pump is located between the liquid storage tank and the liquid injection nozzle.

5. The battery liquid injection device as claimed in claim 4, characterized in that: The liquid storage bin comprises a liquid outlet, the liquid outlet is located at the bottom of the liquid storage bin along the vertical direction, and the liquid outlet is communicated with the liquid injection nozzle.

6. The battery liquid injection device as claimed in claim 5, characterized in that: The bottom of the liquid storage bin includes an inclined surface inclined toward the liquid outlet; or The bottom of the liquid storage bin comprises an arc surface, and the liquid outlet is located at the top of the arc surface.

7. The battery liquid injection device according to any one of claims 1 to 6, characterized in that: The battery liquid injection device comprises an adjusting mechanism, which is connected to the liquid injection nozzle and is used to adjust the position of the liquid injection nozzle so that the liquid injection nozzle is docked with the liquid inlet.

8. The battery liquid injection device according to any one of claims 1 to 6, characterized in that: The battery liquid filling device comprises a base with an inner cavity, and the liquid storage tank is located in the inner cavity.

9. The battery liquid injection device as claimed in claim 8, characterized in that: The battery injection device includes a clamping mechanism, which is fixed to the base and located above the inner cavity in a vertical direction. The clamping mechanism moves toward the injection nozzle to clamp the battery and connect the injection nozzle with the liquid inlet of the battery.

10. The battery liquid injection device according to claim 9, characterized in that: The base comprises a positioning block, the positioning block is provided with a positioning groove for fixing the battery, and the positioning block is located between the liquid injection nozzle and the clamping mechanism.

11. The battery liquid injection device according to claim 10, characterized in that: There are multiple injection nozzles, which are arranged side by side. The positioning block is provided with multiple positioning grooves, which are arranged side by side. Each positioning groove is used to limit one battery. The clamping mechanism is used to clamp multiple batteries, so that the multiple injection nozzles are connected to the liquid inlet of one battery respectively.

12. The battery liquid injection device according to claim 10, characterized in that: There are multiple positioning blocks, the injection nozzle, multiple positioning blocks and the clamping mechanism are arranged in sequence, and the positioning groove of each positioning block is linearly aligned with the center line of the injection nozzle and the clamping mechanism along the center line of the arrangement direction of the injection nozzle and the clamping mechanism to limit the same battery.

Images