Safe and explosion-proof power supply charger
By designing an automatic power-off structure in the power charger, the movement of fixed contacts and moving contacts can achieve automatic power-off when the temperature is too high, solving the safety threat of explosion caused by overheating of the charger and achieving a safe and reliable charging process.
Patent Information
- Application Number
- CN202421584252.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-05
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-05
AI Technical Summary
During use, the current through the current may cause the temperature to rise, which may cause the battery to explode, posing a serious safety threat to people.
A safe and explosion-proof power charger is designed, adopting an automatic power-off structure, and the connection and separation of fixed contacts and dynamic contacts is used to achieve automatic power-off of the power supply. When the temperature is too high, the air expansion in the cylinder drives the push rod movement, and the dynamic contacts and fixed contacts are separated, disconnecting the power supply to prevent explosions caused by overheating.
It effectively prevents explosion caused by overheating of the power charger, improves the safety of use, and realizes effective heat dissipation and protection of the device through the design of the heat dissipation hole and buffer plate.
Smart Images
Figure CN222802581U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chargers, in particular to a safe explosion-proof power charger. Background Art
[0002] A power charger refers to a device used to charge a battery and fill it with charged energy. The power charger charges batteries or other rechargeable devices. It converts electrical energy into electric current and transmits it to the charging device to charge the device and ensure that it operates within a safe range. The power charger usually consists of a casing, an input terminal, an output terminal, and an internal circuit. When using the power charger, the device is connected to the power source through the charger using a wire to charge the device.
[0003] During the use of current, the temperature of the power charger will rise due to the passage of current. If the temperature is too high, it may cause the battery to explode, posing a serious safety threat to people. Utility Model Content
[0004] The purpose of the utility model is to provide a safe explosion-proof power charger. The device is provided with a moving contact and a fixed contact in the charger housing. The connection and separation between the moving contact and the fixed contact can realize automatic power-off of the power charger, so as to solve the problems raised in the above-mentioned background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a safe and explosion-proof power charger, comprising a shell, a circuit board is arranged inside the shell, wire plugs are arranged on both sides of the shell, an automatic power-off structure is arranged on the surface of the wire plug on one side, and the automatic power-off structure is provided with fixed contacts and moving contacts to realize automatic power-off of the device under high temperature conditions.
[0006] Preferably, the automatic power-off structure includes a circuit board, one side of the circuit board is connected to a wire plug on one side through a wire, a fixed contact is provided on the other side of the circuit board, a moving contact is provided above the fixed contact, a wire is provided on the surface of the moving contact to connect with the wire plug on the other side, the fixed contact and the moving contact are both insulating structures, and metal conductive blocks are respectively provided on the surfaces of the fixed contact and the moving contact to connect with the wire, a magnet is provided on the upper surface of the fixed contact, and the same magnet is provided at a corresponding position on the lower surface of the moving contact, and the magnets on the surfaces of the fixed contact and the moving contact are adsorbed and connected to each other.
[0007] By adopting the above technical solution, the connection and disconnection between the fixed contact and the movable contact can be realized to connect and disconnect the wire plug and the power supply.
[0008] Preferably, the circuit board is fixed to the bottom surface of the shell by a bracket, a cylinder is fixedly installed on the bottom surface of the shell, the cylinder is a hollow structure, and a piston is slidably arranged inside the cylinder, a push rod is arranged on the surface of the piston and passes through the surface of the cylinder, air is stored inside the cylinder, and the surface of the cylinder is a heat-conducting material.
[0009] By adopting the above technical solution, the push rod can be driven to move by utilizing the expansion of the air inside the cylinder.
[0010] Preferably, a connecting rod is provided on the surface of the moving contact, the connecting rod is an L-shaped structure, and the other end of the connecting rod is slidably connected to the bottom surface of the outer shell, and a return spring is provided on the surface of the connecting rod, and the other end of the return spring is fixedly installed on the inner wall of the outer shell. Two connecting rods are symmetrically arranged, and the two connecting rods are connected to the push rod through a connecting rod.
[0011] By adopting the above technical solution, the movement of the connecting rod can drive the movable contact to move and separate from the fixed contact.
[0012] Preferably, a buffer heat dissipation structure is provided on the surface of the shell, and the buffer heat dissipation structure is provided with heat dissipation holes and a buffer plate to prevent foreign matter from entering during the process of heat dissipation of the shell.
[0013] By adopting the above technical solution, the device can be cooled by utilizing the buffer heat dissipation structure.
[0014] Preferably, the buffer heat dissipation structure comprises heat dissipation holes, and the heat dissipation holes are elongated through-hole structures, and a plurality of the heat dissipation holes are distributed in parallel on the upper and lower surfaces of the housing.
[0015] By adopting the above technical solution, the heat dissipation holes of the long strip-shaped through holes can fully dissipate the heat of the housing of the device.
[0016] Preferably, buffer plates are respectively provided on the upper and lower surfaces of the shell, and the two buffer plates are connected by a round rod, and the round rod passes through the surface of the shell, and a buffer spring is provided on the outer surface of the round rod, one end of the buffer spring is fixed on the surface of the buffer plate, and the other end of the buffer spring is fixed on the outer surface of the shell.
[0017] By adopting the above technical solution, the buffer plate can be used to dissipate heat from the outer shell while preventing foreign matter from entering the interior of the device through the heat dissipation holes.
[0018] Compared with the prior art, the utility model has the following beneficial effects: the safe and explosion-proof power charger:
[0019] 1. This device is equipped with an automatic power-off structure at the wire plug on one side, and the wire plug is connected to the circuit board using a fixed contact and a moving contact. When the internal temperature of the device is too high, the air in the cylinder expands due to the heat, driving the push rod to move, thereby driving the moving contact to move and separate from the fixed contact, thereby disconnecting the wire plug from the power supply to prevent the device from overheating and exploding;
[0020] 2. The device is provided with heat dissipation holes on the upper and lower surfaces of the shell, and the heat dissipation holes can be used to dissipate heat inside the device. At the same time, buffer plates are provided on the upper and lower surfaces of the shell, and the buffer plates are connected to the surface of the shell through round rods and buffer springs to prevent foreign matter from entering the inside of the device through the heat dissipation holes;
[0021] 3. Buffer plates are respectively arranged on the upper and lower surfaces of the shell of the device, and round rods and buffer springs are arranged on the surface of the buffer plates. The buffer plates are used to shield the heat dissipation holes to prevent foreign matter from entering, and at the same time, buffering of the shell of the device can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic diagram of the external structure of the utility model;
[0023] Figure 2 This is a schematic diagram of the top view of the shell structure of the utility model;
[0024] Figure 3 This is a schematic diagram of the front section structure of the utility model;
[0025] Figure 4 This is a schematic diagram of the front cross-section structure of the housing of the utility model;
[0026] Figure 5 It is a schematic diagram of the fixed contact and the moving contact structure of the utility model.
[0027] In the figure: 1. housing; 2. circuit board; 3. wire plug; 4. fixed contact; 5. moving contact; 6. magnet; 7. connecting rod; 8. return spring; 9. cylinder; 10. piston; 11. push rod; 12. heat dissipation hole; 13. buffer plate; 14. round rod; 15. buffer spring. DETAILED DESCRIPTION
[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0029] See also Figure 1-5The utility model provides a technical solution: a safe explosion-proof power charger, including a shell 1, a circuit board 2, a wire plug 3, a fixed contact 4, a moving contact 5, a magnet 6, a connecting rod 7, a reset spring 8, a cylinder 9, a piston 10, a push rod 11, a heat dissipation hole 12, a buffer plate 13, a round rod 14, and a buffer spring 15.
[0030] A circuit board 2 is arranged inside the shell 1, and wire plugs 3 are arranged on both sides of the shell 1. An automatic power-off structure is arranged on the surface of the wire plug 3 on one side. The automatic power-off structure is provided with a fixed contact 4 and a moving contact 5 to realize automatic power-off of the device under high temperature conditions. The automatic power-off structure includes a circuit board 2, one side of the circuit board 2 is connected to the wire plug 3 on one side through a wire, the other side of the circuit board 2 is provided with a fixed contact 4, a moving contact 5 is arranged above the fixed contact 4, a wire is arranged on the surface of the moving contact 5 to connect with the wire plug 3 on the other side, both the fixed contact 4 and the moving contact 5 are insulating structures, and metal conductive blocks are arranged on the surfaces of the fixed contact 4 and the moving contact 5 to connect with the wire, a magnet 6 is arranged on the upper surface of the fixed contact 4, and the same magnetic contact is arranged at the corresponding position on the lower surface of the moving contact 5. Iron 6, magnets 6 on the surfaces of the fixed contact 4 and the moving contact 5 are adsorbed and connected to each other, the circuit board 2 is fixed to the bottom surface of the shell 1 through a bracket, a cylinder 9 is fixedly installed on the bottom surface of the shell 1, the cylinder 9 is a hollow structure, and a piston 10 is slidably arranged inside the cylinder 9, a push rod 11 is arranged on the surface of the piston 10 to penetrate the surface of the cylinder 9, air is stored inside the cylinder 9, and the surface of the cylinder 9 is a heat-conducting material, a connecting rod 7 is arranged on the surface of the moving contact 5, the connecting rod 7 is an L-shaped structure, and the other end of the connecting rod 7 is slidably connected to the bottom surface of the shell 1, a reset spring 8 is arranged on the surface of the connecting rod 7, and the other end of the reset spring 8 is fixedly installed on the inner wall of the shell 1, two connecting rods 7 are symmetrically arranged, and the two connecting rods 7 are connected to the push rod 11 through a connecting rod;
[0031] like Figure 3 , Figure 4 and Figure 5As shown, when the device is used, the wire plugs 3 on both sides of the shell 1 are connected to the power source and the charging device by wires. At this time, the power source, the wire plug 3, the circuit board 2, the fixed contact 4, the moving contact 5 and the charging device constitute a current path to charge the device. During the charging process, the temperature inside the shell 1 rises, and the air inside the cylinder 9 expands due to the heat and increases in volume, so that the piston 10 inside the cylinder 9 slides, and the sliding piston 10 drives the push rod 11 to move, and the push rod 11 drives the connecting rod 7 to slide to one side, and the connecting rod 7 drives the reset spring while moving. 8 is compressed. When the connecting rod 7 moves, the connecting rod 7 drives the moving contact 5 to move and separate from the fixed contact 4. The moving contact 5 moves and separates from the metal conductive block on the surface of the fixed contact 4, so that the power supply of the wire plug 3 on this side is disconnected to prevent the device from exploding due to excessive temperature. When the temperature in the shell 1 drops, the air in the cylinder 9 contracts. At this time, the connecting rod 7 slides in the opposite direction under the action of the reset spring 8. The magnet 6 on the surface of the sliding moving contact 5 and the magnet 6 on the surface of the fixed contact 4 attract each other, so that the moving contact 5 and the fixed contact 4 are reconnected, so that the power supply of the wire plug 3 is reconnected.
[0032] A buffer heat dissipation structure is provided on the surface of the shell 1. The buffer heat dissipation structure is provided with heat dissipation holes 12 and a buffer plate 13 to prevent foreign matter from entering during the heat dissipation of the shell 1. The buffer heat dissipation structure includes the heat dissipation holes 12. The heat dissipation holes 12 are long strip-shaped through-hole structures. A plurality of heat dissipation holes 12 are distributed in parallel on the upper and lower surfaces of the shell 1. The upper and lower surfaces of the shell 1 are respectively provided with buffer plates 13. The two buffer plates 13 are connected by a round rod 14, and the round rod 14 passes through the surface of the shell 1. A buffer spring 15 is provided on the outer surface of the round rod 14. One end of the buffer spring 15 is fixed to the surface of the buffer plate 13, and the other end of the buffer spring 15 is fixed to the outer surface of the shell 1.
[0033] like Figure 1 and Figure 2 As shown, when the device is placed on a desktop for charging, the buffer plate 13 on the lower surface of the shell 1 contacts the desktop. At this time, under the action of gravity, the shell 1 compresses the buffer spring 15 downward, so that the buffer plate 13 on the upper surface of the shell 1 is lifted and separated from the upper surface of the shell 1. At this time, the buffer spring 15 there is stretched, and the heat dissipation holes 12 on the upper surface of the shell 1 are exposed to dissipate heat for the shell 1. When the charging is completed and the device is picked up, the buffer plates 13 on both sides rebound under the action of the buffer springs 15, and the heat dissipation holes 12 on the surface of the shell 1 are blocked again to prevent foreign matter from entering the device through the heat dissipation holes 12. At the same time, the buffer plate 13 and the buffer spring 15 can buffer the shell 1 to prevent the shell 1 from being damaged by collision.
[0034] Working principle: When using the safe explosion-proof power charger, the power supply is connected to the charging device using the wire plugs 3 on both sides of the shell 1. When the shell 1 is placed on a desktop for charging, the buffer plate 13 on the lower surface of the shell 1 contacts the desktop. Under the action of gravity, the shell 1 compresses the buffer spring 15 downward, so that the heat dissipation holes 12 on the upper surface of the shell 1 are exposed to dissipate heat from the shell 1. When the device is charging, the temperature inside the shell 1 rises, and the air inside the cylinder 9 expands due to the heat, driving the push rod 11 to move. The push rod 11 drives the connecting rod 7 to slide, and the sliding of the connecting rod 7 drives the moving contact 5 to move and separate from the fixed contact 4, thereby disconnecting the wire plug 3 from the power supply, preventing the explosion of the device caused by continuous high temperature, and increasing the overall practicality.
[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A safe explosion-proof power charger, comprising a housing (1), a circuit board (2) disposed inside the housing (1), and wire plugs (3) disposed on both sides of the housing (1), characterized in that: An automatic power-off structure is arranged on the surface of the wire plug (3) on one side, and the automatic power-off structure is provided with a fixed contact (4) and a movable contact (5) to realize automatic power-off of the device under high temperature conditions.
2. A safe explosion-proof power charger according to claim 1, characterized in that: The automatic power-off structure comprises a circuit board (2), one side of the circuit board (2) is connected to a wire plug (3) on one side via a wire, a fixed contact (4) is arranged on the other side of the circuit board (2), a movable contact (5) is arranged above the fixed contact (4), a wire is arranged on the surface of the movable contact (5) to connect with the wire plug (3) on the other side, the fixed contact (4) and the movable contact (5) are both insulating structures, and metal conductive blocks are arranged on the surfaces of the fixed contact (4) and the movable contact (5) to connect with the wire, a magnet (6) is arranged on the upper surface of the fixed contact (4), and a similar magnet (6) is arranged at a corresponding position on the lower surface of the movable contact (5), and the magnets (6) on the surfaces of the fixed contact (4) and the movable contact (5) are mutually attracted and connected.
3. A safe explosion-proof power charger according to claim 2, characterized in that: The circuit board (2) is fixed on the bottom surface of the housing (1) by a bracket, and a cylinder (9) is fixedly installed on the bottom surface of the housing (1). The cylinder (9) is a hollow structure, and a piston (10) is slidably arranged inside the cylinder (9). A push rod (11) is arranged on the surface of the piston (10) and penetrates the surface of the cylinder (9). Air is stored inside the cylinder (9), and the surface of the cylinder (9) is a heat-conducting material.
4. A safe explosion-proof power charger according to claim 2, characterized in that: A connecting rod (7) is arranged on the surface of the movable contact (5), the connecting rod (7) is an L-shaped structure, and the other end of the connecting rod (7) is slidably connected to the bottom surface of the housing (1), and a return spring (8) is arranged on the surface of the connecting rod (7), and the other end of the return spring (8) is fixedly mounted on the inner wall of the housing (1). Two connecting rods (7) are symmetrically arranged, and the two connecting rods (7) are connected to the push rod (11) via a connecting rod.
5. A safe explosion-proof power charger according to claim 1, characterized in that: A buffer heat dissipation structure is provided on the surface of the housing (1), and the buffer heat dissipation structure is provided with heat dissipation holes (12) and a buffer plate (13) to prevent foreign matter from entering during the process of heat dissipation of the housing (1).
6. A safe explosion-proof power charger according to claim 5, characterized in that: The buffer heat dissipation structure comprises a heat dissipation hole (12), the heat dissipation hole (12) is a long strip through-hole structure, and a plurality of the heat dissipation holes (12) are distributed in parallel on the upper and lower surfaces of the housing (1).
7. A safe explosion-proof power charger according to claim 6, characterized in that: The upper and lower surfaces of the shell (1) are respectively provided with buffer plates (13); the two buffer plates (13) are connected by a round rod (14), and the round rod (14) penetrates the surface of the shell (1); the outer surface of the round rod (14) is provided with a buffer spring (15); one end of the buffer spring (15) is fixed to the surface of the buffer plate (13), and the other end of the buffer spring (15) is fixed to the outer surface of the shell (1).