An electrostatic protection device for new energy vehicle battery swap

Abstract

The application provides a static protection device for new energy vehicle battery replacement, which comprises a lower shell, the upper surface of the lower shell is overlapped with the lower surface of an upper shell, a shielding cover is arranged in the upper shell and the lower shell, the lower surface of the inner wall of the lower shell is fixedly connected with the upper surface of a hollow base, and the upper surface of the hollow base is provided with the static protection device. In the application, the shielding cover, the hollow base, the bleeder, the flow guide assembly, the current limiting assembly, the flow discharge hole and the grounding protection assembly are arranged, the static electricity is discharged through the bleeder and transmitted to the static protection device through the gasket, the static electricity flow is more stable, the buzzer is triggered to alarm, and finally discharged through the grounding wire. Through the above multi-stage concentration, discharge and discharge of static electricity, the static electricity is not easy to cause breakdown of the static protection device, and the static protection device and the equipment hardware are effectively protected.

Description

Technical Field

[0001] This invention relates to the field of battery swapping technology for new energy vehicles, and in particular to an electrostatic protection device for battery swapping in new energy vehicles. Background Technology

[0002] Static electricity protection is a means of eliminating charge buildup to avoid adverse consequences. In today's automotive market, new energy vehicles are gaining popularity, and their increasing prevalence has also brought about significant developments in the battery industry. During the installation and replacement of batteries in new energy vehicles, the insertion, removal, and discharge of battery packs generate a large amount of static electricity within the battery swapping area, which tends to accumulate particularly at the swapping stations.

[0003] Preventive measures taken to avoid electric shocks, fires, explosions, electronic device failures and damage, and adverse effects on production caused by static electricity accumulation primarily focus on suppressing static electricity generation, accelerating static electricity leakage, and neutralizing static electricity. When a person wears non-conductive shoes, activities such as walking generate and accumulate charges, potentially reaching kilovolt levels. Walking on a blanket or undressing can generate a potential as high as 2450 volts, at which point touching other objects can cause spark discharge and electric shock. Anti-static measures during human activities mainly include: wearing conductive shoes; avoiding synthetic fabrics in work clothes and underwear; wearing anti-static work clothes mixed with conductive fibers or treated with anti-static agents; and conductiveing ​​the work surface. When two different objects come into contact, charge movement occurs at their interface, with positive and negative charges aligning to form a double layer. If the objects are separated, equal amounts of charges of different polarities will be generated on each object.

[0004] Electrostatic discharge (ESD) protection devices prevent sensitive circuits in electronic devices from being affected by ESD. They offer very low capacitance and superior transmission line pulse (TLP) testing and IEC 6100-4-2 testing capabilities compared to other similar components. Especially after high sampling counts (up to 1000), these devices provide lower trigger and clamping voltages than traditional polymer electrostatic discharge (ESD) devices, thus improving the protection of sensitive electronic components. ESD protection devices are overvoltage protection components designed for I / O port protection in high-speed data transmission applications. ESD protection devices are used to prevent sensitive circuits in electronic devices from being affected by ESD (electrostatic discharge). They offer very low capacitance, excellent transmission line pulse (TLP) testing, and IEC 6100-4-2 testing capabilities, especially after high sampling counts (up to 1000), thus improving the protection of sensitive electronic components.

[0005] For example, the Chinese invention patent "Battery Protection System" (patent number CN201810505685.3) currently uses deep scan electrostatic discharge (ESD) protection technology. This solution points out that existing lithium batteries, due to the presence of flammable materials in their structure, require extra attention to data such as temperature, voltage, and current. To obtain accurate data, protection chips are often used to monitor the data or make timely adjustments when data issues arise. To prevent damage to the protection chip due to lifespan limitations or unexpected situations, which could lead to large current leakage and subsequent spontaneous combustion or explosion of the battery cell, a current-limiting resistor R1 is installed in the circuit. R1 has a resistance in the hundreds of ohms range, occupying circuit board space. Although connecting the ESD protection device and the current-limiting resistor in series between the first and second pads, placing the current-limiting resistor inside the chip, saves circuit board space, the following problems still occur in actual use: 1. Due to the low melting point of solder on the connection pins of the electrostatic protector, and the different materials of the component pins and the board material fixing the component, their coefficients of thermal expansion are different. As the operating temperature of the component changes, the force of thermal expansion and contraction will cause cold solder joints. Unstable installation will cause stress on the solder joints of the component pins. At the same time, cold solder joints are still prone to occur when working in a high-temperature environment, which will affect the normal use of the electrostatic protector. 2. When using an electrostatic discharge protector, the effect of protecting it with only a single-stage anti-static method is still not ideal. When the trigger voltage exceeds the source-drain breakdown voltage of the device, it will cause the device to burn out and fail to effectively discharge the current. In addition, the discharge is concentrated in the corner areas of the electrostatic discharge protector, which can easily cause electrostatic breakdown at the corners and damage the equipment hardware and the device itself. Summary of the Invention

[0006] The present invention aims to provide an electrostatic protection device for battery swapping of new energy vehicles to overcome or at least partially solve the above-mentioned problems.

[0007] To achieve the above objectives, the technical solution of the present invention is specifically implemented as follows: An electrostatic discharge (ESD) protection device for battery swapping in new energy vehicles includes a lower housing, the upper surface of which overlaps with the lower surface of an upper housing. A common shielding cover is provided inside both the upper and lower housings. The lower surface of the inner wall of the lower housing is fixedly connected to the upper surface of a hollow base. An ESD protection component is provided on the upper surface of the hollow base. Several heat sinks are provided in the middle of the upper surface of the ESD protection component. Guide plates are snapped onto both the front and back of the ESD protection component. The guide plates are snapped into gaskets. The lower surfaces of two gaskets are fixedly connected to the upper surface of the hollow base. The surfaces of the two gaskets that are far apart from each other are snapped onto the inner wall of a discharge device. The lower surface of the discharge device is fixedly connected to the lower surface of the inner wall of the lower housing. Current guiding components are snapped onto the four corners of the inner wall of the shielding cover. Guide posts are provided at the bottom of each of the four current guiding components. Two current limiting components are provided between each pair of adjacent guide posts. The ends of the four guide posts that are close to each other are connected to the four corners of the outer wall of the discharge device. Four connecting components are snapped onto the front and back of the lower housing. One end of each of the four connecting components is connected to one side of the gasket. A connecting pin is provided at one end of the front of each connecting component. Grounding protection components are snapped onto the left and right sides of the lower housing. One end of the grounding protection component located inside the lower housing is connected to the upper surface of the vent. A groove is formed on the lower surface of the lower housing. A support component is provided in the groove. The outer wall of the support component is fixedly connected to the inner wall of the groove through a stop. Snap-on components are fixedly connected to both ends of the support component. A heat-conducting component is snapped onto the upper surface of the upper housing. The heat-conducting component includes a heat-conducting plate, which is snapped onto the upper surface of the upper housing. The upper surface of the heat-conducting plate is provided with several heat dissipation strips. A handle is provided in the middle of the upper surface of the upper housing. The lower side of the outer wall of the upper housing is fixed to the lower housing by several self-tapping screws. The self-tapping screws are set in the mounting slots. The mounting slots are all opened on the upper surface of the lower housing.

[0008] As a further aspect of the present invention: the lower housing includes an insulating layer, an antistatic layer and a conductive layer, wherein the insulating layer is the outermost layer and the antistatic layer is located between the insulating layer and the conductive layer.

[0009] As a further aspect of the present invention: the connecting assembly includes a sleeve, the sleeve being snapped onto the front side of the lower housing, a connecting post being provided inside the sleeve, one end of the back side of the connecting post being connected to the front side of the gasket, and the connecting pin being snapped onto the inner wall of the sleeve.

[0010] As a further aspect of the present invention: the outer wall of the sleeve is coated with a synthetic resin layer, the insulating layer is made of thermosetting reinforced plastic, the antistatic layer is an antistatic polyvinyl chloride coating, and the conductive layer is an antistatic acrylic sheet.

[0011] As a further aspect of the present invention: the flow guiding component includes a flow guiding column, the outer wall of the flow guiding column is provided with a plurality of electrostatic rings, the plurality of electrostatic rings are all snapped into the inner wall of the shielding cover, and the bottom of the flow guiding column is connected to one end of the flow guiding column.

[0012] As a further aspect of the present invention: the current limiting component includes a metal wire, the two ends of which are respectively connected to the sides of two corresponding guide posts that are close to each other, and the outer surface of the metal wire is provided with a plurality of current limiting resistors.

[0013] As a further aspect of the present invention: the total resistance of the metal wire and the current-limiting resistor is preferably 85-120 ohms, and a plurality of vent holes are provided around the upper surface of the vent.

[0014] As a further embodiment of the present invention: the grounding protection component includes a connecting wire and a grounding wire. The grounding wire is snapped onto the right side of the lower housing. The left end of the grounding wire is connected to the right end of the connecting wire. The bottom end of the connecting wire is connected to the output end on the upper surface of the discharge device. A buzzer is snapped onto the right side of the lower housing. The left end of the buzzer is connected to the right side of the electrostatic protection component through the output connection end. The ends of the two gaskets that are far apart from each other are fixedly connected to the inner wall of the shielding cover through four fixing rods.

[0015] As a further aspect of the present invention: the support assembly includes a slide cylinder, and two slide rods are slidably connected inside the slide cylinder. The ends of the two slide rods that are close to each other are fixedly connected to the two ends of a spring, and the ends of the two slide rods that are far from each other are fixedly connected to the ends of two snap-fit ​​components that are close to each other.

[0016] As a further aspect of the present invention: the snap-fit ​​assembly includes a slider, which is slidably connected in a groove. Both the slider and the groove are T-shaped. A locking block is fixedly connected to the lower surface of the slider. One side of the locking block is arc-shaped. Several columns are fixedly connected to the lower surface of the lower housing.

[0017] This invention provides an electrostatic protection device for battery swapping in new energy vehicles, with the following advantages: 1. In this invention, by setting up a shielding cover, a hollow base, a discharger, a current guiding component, a current limiting component, a discharge hole, and a grounding protection component, when the electrostatic protector is subjected to current surges during use, the shielding cover plays a role in shielding the signal, providing first-order protection. At the same time, the electrostatic rings set at the four corners of the inner wall of the lower housing effectively protect the electrostatic junctions at the corners, transferring the static electricity to the current limiting component through the guide post, increasing the uniformity of the current discharge path. Furthermore, through the cooperation between multiple metal wires and the current limiting resistor, after the static current is transferred, the current flows not only horizontally but also vertically, improving the discharge in areas with large curvature. The static electricity is discharged through the discharger and transferred to the electrostatic protection component through the gasket, making the static electricity flow more stable and triggering the buzzer to sound an alarm. Finally, it is discharged through the grounding wire. Through the above multi-stage concentration, discharge, and discharge of static electricity, the static electricity is less likely to cause breakdown of the electrostatic protection device, effectively protecting the electrostatic protection device and equipment hardware.

[0018] 2. In this invention, by setting grooves, springs, slide cylinders, slide rods, locking blocks, and a lower housing, when the electrostatic protection device is soldered through connecting pins, the lower housing is pressed down onto the external circuit board, causing the two locking blocks to engage in their preset slots. After the lower housing and the circuit board are tightly fitted together, the two slide rods are moved away from each other by the support of the spring. Since the upper part of the bottom of the locking block is flat, it can effectively lock the lower housing and the circuit board, achieving initial positioning of the electrostatic protection device. Secondly, by soldering multiple connecting pins, the electrostatic protection device is installed through a double positioning method, making it less likely for the electrostatic protection device to detach from the circuit board due to high temperature operation or long-term use, thus improving the stability of the electrostatic protection device's operation.

[0019] 3. In this invention, by setting up a column, a lower shell, an insulating layer, an antistatic layer, and a conductive layer, the column effectively limits the lower shell, making it less prone to shaking and more stable after installation. Through the cooperation between the insulating layer, the antistatic layer, and the conductive layer, the electrostatic protection device can be insulated and protected against static electricity, giving it flame-retardant and durable characteristics, and maintaining its static elimination performance for a long time. The conductive layer is made of antistatic acrylic sheet, which has excellent static elimination function, effectively preventing dust accumulation and avoiding the possible hazards of static electricity, achieving a multi-layer antistatic effect, and further protecting the electrostatic protection device.

[0020] 4. In this invention, by setting up a drain hole, a hollow base, a heat-conducting component, a locking block, and a spring, the drain hole reduces the current density of electrostatic discharge, lowers the risk of breakdown and overheating, and improves the performance of the discharger. The hollow base separates the electrostatic protection component from the bottom of the lower housing, preventing damage caused by electrostatic leakage. Through the cooperation between the heat-conducting plate and the heat dissipation strips, multiple heat dissipation strips increase the heat-receiving area, further improving the heat dissipation effect of the electrostatic protection device. Through the cooperation between the locking block and the spring, when removing the lower housing, the two locking blocks can be opened from the bottom and moved away from each other to remove the device, which is very convenient. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional cross-sectional structural diagram of the present invention; Figure 2 This is a three-dimensional cross-sectional structural diagram of the shielding cover of the present invention; Figure 3 This is a three-dimensional structural schematic diagram of the present invention; Figure 4 This is a three-dimensional structural schematic diagram of the flow guiding component of the present invention; Figure 5 This is a three-dimensional structural schematic diagram of the lower shell of the present invention; Figure 6 This is a three-dimensional structural schematic diagram of the snap-fit ​​component of the present invention; Figure 7 This is a schematic diagram of the cross-sectional structure of the lower shell of the present invention; In the diagram: 1. Lower housing; 101. Insulating layer; 102. Antistatic layer; 103. Conductive layer; 2. Upper housing; 3. Shielding cover; 4. Hollowed-out base; 5. Static electricity protection component; 6. Heat sink; 7. Guide plate; 8. Discharge device; 9. Current guiding assembly; 91. Static ring; 92. Current guiding post; 10. Guide post; 11. Current limiting assembly; 111. Metal wire guide; 112. Current limiting resistor; 12. Drain hole; 13. Connecting pin; 14. Connecting assembly; 141. Sleeve; 142. Connecting post 15. Grounding protection component; 151. Connecting wire; 152. Grounding wire; 16. Buzzer; 17. Output connection terminal; 18. Gasket; 19. Fixing rod; 20. Mounting slot; 21. Self-tapping screw; 22. Groove; 23. Support component; 231. Sliding rod; 232. Spring; 233. Sliding cylinder; 24. Snap-fit ​​component; 241. Slider; 242. Locking block; 25. Stop block; 26. Heat conduction component; 261. Heat conduction plate; 262. Heat sink; 27. Handle; 28. Column. Detailed Implementation

[0023] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0024] like Figure 1-7 As shown, the present invention provides a technical solution: an electrostatic protection device for battery swapping in new energy vehicles, comprising a lower housing 1, the upper surface of the lower housing 1 overlapping the lower surface of the upper housing 2, the same shielding cover 3 being provided inside the upper housing 2 and the lower housing 1, the lower surface of the inner wall of the lower housing 1 being fixedly connected to the upper surface of the hollow base 4, an electrostatic protection component 5 being provided on the upper surface of the hollow base 4, a plurality of heat sinks 6 being provided in the middle of the upper surface of the electrostatic protection component 5, guide plates 7 being snapped onto both the front and back of the electrostatic protection component 5, the guide plates 7 being snapped into the gaskets 18, and the lower surfaces of both gaskets 18 being connected to the hollow base. The upper surface of the 4 is fixedly connected, and the two gaskets 18 are engaged with the inner wall of the discharger 8 on the side that is far away from each other. By setting the hollow base 4, the setting of the hollow base 4 separates the electrostatic protection component 5 from the bottom of the lower housing 1, so as to avoid damage to it due to electrostatic leakage. The lower surface of the discharger 8 is fixedly connected to the lower surface of the inner wall of the lower housing 1. The four corners of the inner wall of the shield 3 are all engaged with the flow guiding component 9. The bottom of the four flow guiding components 9 is provided with the guide post 10. Two current limiting components 11 are provided between two adjacent guide posts 10. The ends of the four guide posts 10 that are close to each other are connected to the four corners of the outer wall of the discharger 8.

[0025] Four connecting components 14 are snapped onto the front and back of the lower housing 1. One end of each of the four connecting components 14 is connected to one side of the gasket 18. One end of the front of the connecting component 14 is provided with a connecting pin 13. Grounding protection components 15 are snapped onto the left and right sides of the lower housing 1. One end of the grounding protection component 15 located inside the lower housing 1 is connected to the upper surface of the vent 8. A groove 22 is provided on the lower surface of the lower housing 1. A support component 23 is provided in the groove 22. The outer wall of the support component 23 is fixedly connected to the inner wall of the groove 22 through a stop 25. Both ends of the support component 23 are fixedly connected with snap-fit ​​components 24. A heat-conducting component 26 is snapped onto the upper surface of the upper housing 2.

[0026] The heat-conducting component 26 includes a heat-conducting plate 261, which is snapped onto the upper surface of the upper housing 2. The upper surface of the heat-conducting plate 261 is provided with a plurality of heat dissipation strips 262. Through the mutual cooperation between the heat-conducting plate 261 and the heat dissipation strips 262, the multiple heat dissipation strips 262 increase the heat-receiving area and further improve the heat dissipation effect of the electrostatic protection device. A handle 27 is provided in the middle of the upper surface of the upper housing 2. The lower side of the outer wall of the upper housing 2 is fixed to the lower housing 1 by a plurality of self-tapping screws 21. The self-tapping screws 21 are provided in the mounting grooves 20. The plurality of mounting grooves 20 are all opened on the upper surface of the lower housing 1.

[0027] Specifically, such as Figure 1 , Figure 2 , Figure 4 and Figure 7 As shown, the lower housing 1 includes an insulating layer 101, an antistatic layer 102, and a conductive layer 103. The insulating layer 101 is the outermost layer, and the antistatic layer 102 is located between the insulating layer 101 and the conductive layer 103.

[0028] Specifically, such as Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the connecting assembly 14 includes a sleeve 141, which is snapped onto the front of the lower housing 1. A connecting post 142 is provided inside the sleeve 141, and one end of the back of the connecting post 142 is connected to the front of the gasket 18. A connecting pin 13 is snapped into the sleeve 141. The outer wall of the sleeve 141 is coated with a synthetic resin layer. The insulating layer 101 is made of thermosetting reinforced plastic. The antistatic layer 102 is an antistatic polyvinyl chloride coating, and the conductive layer 103 is an antistatic acrylic sheet. Through the cooperation between the insulating layer 101, the antistatic layer 102, and the conductive layer 103, the electrostatic protection device can be insulated and protected against static electricity, giving it flame-retardant and durable characteristics, and maintaining its static elimination performance for a long time. The conductive layer 103, being an antistatic acrylic sheet, has excellent static elimination function, effectively preventing dust accumulation and avoiding potential hazards caused by static electricity.

[0029] The current guiding component 9 includes a current guiding column 92, the outer wall of which is provided with several electrostatic rings 91, which are all snapped into the inner wall of the shielding cover 3. The bottom of the current guiding column 92 is connected to one end of the guide column 10. The current limiting component 11 includes a metal wire 111. Through the cooperation between the multiple metal wires 111 and the current limiting resistor 112, after the electrostatic current is transmitted, the current not only flows in the horizontal direction but also discharges in the vertical direction, which improves the curvature area. The two ends of the metal wire 111 are respectively connected to the side of the corresponding two guide columns 10 that are close to each other. The outer surface of the metal wire 111 is provided with several current limiting resistors 112. The total resistance of the metal wire 111 and the current limiting resistor 112 is preferably 85-120 ohms. Several discharge holes 12 are provided around the upper surface of the discharge device 8. Due to the setting of the discharge holes 12, the current density of electrostatic discharge is reduced, the risk of breakdown and overheating is reduced, and the performance of the discharge device 8 is improved.

[0030] The grounding protection component 15 includes a connecting wire 151 and a grounding wire 152. The grounding wire 152 is snapped onto the right side of the lower housing 1, such as... Figure 1 As shown, the left end of the grounding wire 152 is connected to the right end of the connecting wire 151, and the bottom end of the connecting wire 151 is connected to the output end on the upper surface of the discharger 8. A buzzer 16 is snapped onto the right side of the lower housing 1. The left end of the buzzer 16 is connected to the right side of the electrostatic protection component 5 through the output connection end 17. The ends of the two gaskets 18 that are far apart from each other are fixedly connected to the inner wall of the shielding cover 3 through four fixing rods 19. The support assembly 23 includes a slide cylinder 233. Two slide rods 231 are slidably connected inside the slide cylinder 233. The ends of the two slide rods 231 that are close to each other are fixedly connected to the two ends of the spring 232, and the ends of the two slide rods 231 that are far apart from each other are fixedly connected to the ends of the two snap-fit ​​assemblies 24 that are close to each other. The snap-fit ​​assembly 24 includes a slider 241, which is slidably connected within the groove 22. Through the cooperation between the support assembly 23 and the snap-fit ​​assembly 24, after the lower housing 1 is tightly attached to the circuit board, the two sliding rods 231 are moved away from each other by the support of the spring 232. Since the bottom of the snap-fit ​​block 242 is flat, it can effectively snap the lower housing 1 to the circuit board, achieving the initial limiting of the electrostatic protection device. Secondly, by soldering multiple connecting pins 13, the electrostatic protection device is limited by a double limiting method. The components are installed to prevent the electrostatic protection device from detaching from the circuit board due to high temperature operation or long-term use. The slider 241 and the groove 22 are both T-shaped. The lower surface of the slider 241 is fixedly connected to the locking block 242. Through the cooperation between the locking block 242 and the spring 232, when removing the lower housing 1, the two locking blocks 242 can be opened from the bottom and removed by moving the two locking blocks 242 away from each other. It is very convenient. One side of the locking block 242 is arc-shaped. Several columns 28 are fixedly connected to the lower surface of the lower housing 1.

[0031] The working principle of this invention is as follows: When installing the electrostatic discharge (ESD) protection device, press the lower housing 1 down onto the external circuit board, causing the two locking blocks 242 to engage in their pre-set slots. After the lower housing 1 and the circuit board are tightly fitted together, the two sliding rods 231 are moved away from each other by the support of the spring 232. Because the bottom of the locking block 242 is flat, it effectively engages the lower housing 1 with the circuit board, achieving initial positioning of the ESD protection device. Then, by soldering multiple connecting pins 13, the shielding cover 3 shields the signal when subjected to current surges during use, providing first-order protection. The static rings 91 set at the four corners of the inner wall of the housing 1 effectively protect the static junctions at the corners. The static electricity is transferred to the current limiting component 11 through the guide post 10, increasing the uniformity of the current discharge path. Through the cooperation between the multiple metal wires 111 and the current limiting resistor 112, after the static current is transferred, the current flows not only in the horizontal direction but also in the vertical direction. The static electricity is discharged through the discharger 8 and transferred to the static protection component 5 through the gasket 18, making the static electricity flow more stable and triggering the buzzer 16 to sound an alarm. Finally, it is discharged through the grounding wire 152.

[0032] In summary: By incorporating a shielding cover 3, a hollow base 4, a discharger 8, a current guiding component 9, a current limiting component 11, a discharge hole 12, and a grounding protection component 15, the shielding cover 3 provides first-order protection against current surges during operation. Simultaneously, the electrostatic rings 91 located at the four corners of the lower housing 1 effectively protect against electrostatic interactions at these corners, transferring static electricity through the guide posts 10 to the current limiting component 11, thus increasing the uniformity of the current discharge path. Furthermore, multiple metal wires 111 connect to the current limiting component. The interaction between the current resistors 112 ensures that after the electrostatic current is transferred, the current flows not only horizontally but also vertically, improving the performance of areas with large curvature. The static electricity is discharged through the discharger 8 and transferred to the electrostatic protection component 5 through the gasket 18, making the static electricity flow more stable and triggering the buzzer 16 to sound an alarm. Finally, it is discharged through the grounding wire 152. Through the above multi-stage process of concentrating, discharging, and expelling static electricity, it is less likely for static electricity to cause breakdown of the electrostatic protection device, thus effectively protecting the electrostatic protection device and equipment hardware.

[0033] By setting up groove 22, spring 232, slide cylinder 233, slide rod 231, locking block 242 and lower housing 1, when the electrostatic protection device is soldered through connecting pin 13, the lower housing 1 is pressed down onto the external circuit board, so that the two locking blocks 242 are inserted into their preset slots. After the lower housing 1 is tightly attached to the circuit board, the two slide rods 231 are moved away from each other by the support of the spring 232. Since the bottom of the locking block 242 is flat, it can effectively lock the lower housing 1 and the circuit board, realizing the initial positioning of the electrostatic protection device. Secondly, by soldering multiple connecting pins 13, the electrostatic protection device is installed through a double positioning method, so that the electrostatic protection device is not easy to detach from the circuit board due to high temperature operation or long-term use, thus improving the stability of the electrostatic protection device.

[0034] By setting up a column 28, a lower housing 1, an insulating layer 101, an antistatic layer 102, and a conductive layer 103, the column 28 effectively limits the lower housing 1, making it less prone to shaking and more stable after installation. Through the cooperation between the insulating layer 101, the antistatic layer 102, and the conductive layer 103, the electrostatic protection device can be insulated and protected against static electricity, giving it flame-retardant and durable characteristics, and maintaining its static elimination performance for a long time. The conductive layer 103 is made of antistatic acrylic sheet, which has excellent static elimination function, effectively preventing dust accumulation and avoiding the possible hazards caused by static electricity, achieving a multi-layer antistatic effect, and further protecting the electrostatic protection device.

[0035] By setting up the drain hole 12, the hollow base 4, the heat-conducting component 26, the locking block 242, and the spring 232, the drain hole 12 reduces the current density of electrostatic discharge, lowers the risk of breakdown and overheating, and improves the performance of the discharger 8. The hollow base 4 separates the electrostatic protection component 5 from the bottom of the lower housing 1, preventing damage caused by electrostatic leakage. Through the cooperation between the heat-conducting plate 261 and the heat sink 262, the multiple heat sinks 262 increase the heat-receiving area, further improving the heat dissipation effect of the electrostatic protection device. Through the cooperation between the locking block 242 and the spring 232, when removing the lower housing 1, the two locking blocks 242 can be opened from the bottom and removed by moving the two locking blocks 242 away from each other, which is very convenient.

[0036] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. An electrostatic protection device for battery swapping in new energy vehicles, comprising a lower housing (1), characterized in that: The upper surface of the lower housing (1) overlaps with the lower surface of the upper housing (2). The upper housing (2) and the lower housing (1) are provided with the same shielding cover (3). The lower surface of the inner wall of the lower housing (1) is fixedly connected to the upper surface of the hollow base (4). The upper surface of the hollow base (4) is provided with an electrostatic protection component (5). Several heat sinks (6) are provided in the middle of the upper surface of the electrostatic protection component (5). Guide plates (7) are snapped onto both the front and back of the electrostatic protection component (5). The guide plates (7) are snapped into the gaskets (18). The two gaskets (18) are... The lower surface of 8) is fixedly connected to the upper surface of the hollow base (4). The two gaskets (18) are locked to the inner wall of the vent (8) with their sides away from each other. The lower surface of the vent (8) is fixedly connected to the lower surface of the inner wall of the lower housing (1). The four corners of the inner wall of the shield (3) are locked with flow guiding components (9). The bottom of the four flow guiding components (9) is provided with guide posts (10). There are two flow limiting components (11) between two adjacent guide posts (10). The ends of the four guide posts (10) that are close to each other are connected to the four corners of the outer wall of the vent (8). The lower housing (1) has four connecting components (14) snapped onto its front and back sides. One end of each of the four connecting components (14) is connected to one side of the gasket (18). One end of the front of each connecting component (14) is provided with a connecting pin (13). The left and right sides of the lower housing (1) are snapped onto grounding protection components (15). One end of the grounding protection component (15) located inside the lower housing (1) is connected to the upper surface of the vent (8). The lower surface of the lower housing (1) has a groove (22). A support component (23) is provided in the groove (22). The outer wall of the support component (23) is fixedly connected to the inner wall of the groove (22) through a stop block (25). Both ends of the support component (23) are fixedly connected with snap-fit ​​components (24). The upper surface of the upper housing (2) is snapped onto a heat-conducting component (26). The heat-conducting component (26) includes a heat-conducting plate (261), which is snapped onto the upper surface of the upper housing (2). The upper surface of the heat-conducting plate (261) is provided with several heat dissipation strips (262). A handle (27) is provided in the middle of the upper surface of the upper housing (2). The lower side of the outer wall of the upper housing (2) is fixed to the lower housing (1) by several self-tapping screws (21). The self-tapping screws (21) are set in the mounting grooves (20). Several mounting grooves (20) are all opened on the upper surface of the lower housing (1).

2. The electrostatic protection device for battery swapping in new energy vehicles according to claim 1, characterized in that: The lower housing (1) includes an insulating layer (101), an antistatic layer (102), and a conductive layer (103). The insulating layer (101) is the outermost layer, and the antistatic layer (102) is located between the insulating layer (101) and the conductive layer (103).

3. The electrostatic protection device for battery swapping in new energy vehicles according to claim 2, characterized in that: The connecting assembly (14) includes a sleeve (141) which is snapped onto the front of the lower housing (1). A connecting post (142) is provided inside the sleeve (141). One end of the back of the connecting post (142) is connected to the front of the gasket (18). The connecting pin (13) is snapped onto the inner wall of the sleeve (141).

4. The electrostatic protection device for battery swapping in new energy vehicles according to claim 3, characterized in that: The outer wall of the sleeve (141) is coated with a synthetic resin layer, the insulating layer (101) is made of thermosetting reinforced plastic, the antistatic layer (102) is an antistatic polyvinyl chloride coating, and the conductive layer (103) is an antistatic acrylic sheet.

5. The electrostatic protection device for battery swapping in new energy vehicles according to claim 1, characterized in that: The flow guiding component (9) includes a flow guiding column (92), and the outer wall of the flow guiding column (92) is provided with a plurality of electrostatic rings (91). The plurality of electrostatic rings (91) are all snapped into the inner wall of the shielding cover (3). The bottom of the flow guiding column (92) is connected to one end of the guide column (10).

6. The electrostatic protection device for battery swapping in new energy vehicles according to claim 1, characterized in that: The current limiting component (11) includes a metal wire (111), the two ends of which are respectively connected to the side of the corresponding two guide posts (10) that are close to each other, and a number of current limiting resistors (112) are provided on the outer surface of the metal wire (111).

7. The electrostatic protection device for battery swapping in new energy vehicles according to claim 6, characterized in that: The total resistance of the metal wire (111) and the current limiting resistor (112) is preferably 85-120 ohms, and a number of discharge holes (12) are provided around the upper surface of the discharge device (8).

8. The electrostatic protection device for battery swapping in new energy vehicles according to claim 1, characterized in that: The grounding protection component (15) includes a connecting wire (151) and a grounding wire (152). The grounding wire (152) is snapped onto the right side of the lower housing (1). The left end of the grounding wire (152) is connected to the right end of the connecting wire (151). The bottom end of the connecting wire (151) is connected to the output end on the upper surface of the discharger (8). A buzzer (16) is snapped onto the right side of the lower housing (1). The left end of the buzzer (16) is connected to the right side of the electrostatic protection component (5) through the output connection end (17). The ends of the two gaskets (18) that are far apart from each other are fixedly connected to the inner wall of the shielding cover (3) through four fixing rods (19).

9. An electrostatic protection device for battery swapping in new energy vehicles according to claim 1, characterized in that: The support assembly (23) includes a slide cylinder (233), in which two slide rods (231) are slidably connected. The ends of the two slide rods (231) that are close to each other are fixedly connected to the two ends of the spring (232), and the ends of the two slide rods (231) that are far apart from each other are fixedly connected to the ends of the two snap-fit ​​assemblies (24) that are close to each other.

10. An electrostatic protection device for battery swapping in new energy vehicles according to claim 9, characterized in that: The snap-fit ​​assembly (24) includes a slider (241), which is slidably connected in a groove (22). Both the slider (241) and the groove (22) are T-shaped. A locking block (242) is fixedly connected to the lower surface of the slider (241). One side of the locking block (242) is arc-shaped. Several columns (28) are fixedly connected to the lower surface of the lower housing (1).

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