Vehicle-mounted charger and vehicle-mounted charging system

Abstract

The invention relates to the technical field of automotive electronics, in particular to a vehicle-mounted charger and a vehicle-mounted charging system. The vehicle-mounted charger comprises a charger shell, a charger body and a charger cover, a mounting seat is arranged in the charger shell, the charger shell and the mounting seat are connected through a buffer assembly, a limiting assembly is mounted on the side wall of the charger shell, and a heat dissipation assembly is embedded in the side wall of the charger shell; the buffering assembly comprises a fixing block, a first connecting block, a fixing rod, a damping rod, a damping spring, a buffering spring, a sliding sleeve, a second connecting block and a connecting rod. The limiting assembly comprises a fixing groove, a pull rod, a guide rod, a limiting block and a limiting spring. The heat dissipation assembly comprises a pipe body, a motor, a heat dissipation fan and a dustproof net. A vehicle-mounted charger system comprises a charger body, a vehicle control unit, a battery management system (BMS), a high-voltage battery and a low-voltage battery. The invention provides the vehicle-mounted charger and the vehicle-mounted charging system which have heat dissipation and damping functions and are convenient to disassemble, assemble and maintain.

Description

Technical Field

[0001] This invention relates to the field of automotive electronics technology, and more particularly to an on-board charger and an on-board charging system. Background Technology

[0002] An on-board charger is a charger that is fixedly installed on an electric vehicle. It has the ability to safely and automatically fully charge the electric vehicle's power battery. Based on the data provided by the battery management system (BMS), the charger can dynamically adjust the charging current or voltage parameters, perform corresponding actions, and complete the charging process.

[0003] However, existing on-board chargers have many shortcomings in actual use: they are prone to overheating during operation, which may lead to fires with prolonged use, resulting in poor safety; on-board chargers are generally placed in the vehicle and taken out for use when needed, which can easily cause shaking and vibration during vehicle operation, making them susceptible to damage, resulting in poor protection; at the same time, existing on-board chargers are all integrated designs, which makes it inconvenient to inspect and repair when internal parts are damaged, resulting in poor practicality. Summary of the Invention

[0004] The purpose of this invention is to solve the technical problems of poor safety, poor protection, and poor practicality of existing vehicle-mounted chargers, and to propose a vehicle-mounted charger and vehicle-mounted charging system with heat dissipation and shock absorption functions and convenient disassembly and maintenance.

[0005] The technical solution adopted in this invention is as follows: an on-board charger, characterized in that: it includes a charger housing, a mounting base is provided inside the charger housing, the charger housing and the mounting base are connected by a buffer assembly, a charger body is mounted on the mounting base, a charger cover is provided on the top of the charger body, a limiting assembly is installed on the side wall of the charger housing and a heat dissipation assembly is embedded therein; the buffer assembly includes two fixing blocks disposed at the bottom of the charger housing and two connecting blocks disposed at the bottom of the mounting base, the two fixing blocks are fixedly connected by a fixing rod, the fixing blocks are connected to the mounting base by a damping rod and a shock-absorbing spring, and buffer springs are sleeved on the outer sides of both ends of the fixing rod. The spring has a buffer spring, one end of which is connected to a sliding sleeve fitted on the outside of the fixed rod. The sliding sleeve has a connecting block two. The connecting block one and the connecting block two, located on the same side, are connected by a connecting rod. The limiting assembly includes a fixing groove on the side wall of the charger housing and a pull rod on one side of the charger housing. A guide rod that penetrates the side wall of the charger housing is fixedly connected to one side of the pull rod. A limiting block is provided at one end of the guide rod. The limiting block is connected to the side wall of the charger housing by multiple limiting springs. The heat dissipation assembly includes a tube embedded in the side wall of the charger housing. A motor is installed inside the tube. A cooling fan is provided at the output end of the motor. A dustproof net is provided at one end of the tube.

[0006] As a further improvement, the charger cover is provided with a handle, and the bottom of the charger cover is provided with a rubber pad.

[0007] As a further improvement, the charger housing sidewall is provided with multiple heat dissipation holes and multiple cable passage holes.

[0008] As a further improvement, the shock-absorbing spring is sleeved on the outside of the damping rod, and the sliding sleeve is connected to the fixed block on the same side through the buffer spring; the connecting rod is hinged to the connecting block one and the connecting block two by bolts, the bottom of the sliding sleeve is provided with a slider one, and the bottom wall of the charger housing is provided with a groove one for the slider one to slide.

[0009] As a further improvement, sliders are fixedly connected to both sides of the mounting base, and the side wall of the charger housing is provided with a groove for sliders to slide.

[0010] As a further improvement, the charger housing sidewall is provided with a guide hole on one side of the fixing groove for the guide rod to pass through, the limiting spring is located in the fixing groove inside the charger housing, and one side surface of the limiting block is a smooth inclined surface.

[0011] As a further improvement, the motor and the tube are fixedly connected by multiple connecting rods.

[0012] An on-board charger system is characterized by comprising a charger body, a vehicle controller, a battery management system (BMS), a high-voltage battery, and a low-voltage battery, wherein the charger body is connected to the vehicle controller, and the BMS, high-voltage battery, and low-voltage battery are all electrically connected.

[0013] As a further improvement, the charger body includes a control circuit, an AC charging processing circuit, and a charging switch protection circuit, which are electrically connected to each other.

[0014] The beneficial effects of this invention are as follows: This invention is equipped with a buffer component, which has a shock absorption effect, reducing the shaking and vibration generated during vehicle operation and providing good protection; it is equipped with a heat dissipation component, which can provide air cooling for the charger body, avoiding the possibility of high temperature and fire caused by prolonged operation, thus ensuring good safety; it is equipped with a limiting component, which can limit and fix the top cover of the charger, while also facilitating disassembly and assembly, making it convenient for inspection and maintenance, and thus highly practical. Therefore, this invention has great application value and promotion value. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an on-board charger and an on-board charging system according to the present invention;

[0016] Figure 2 This invention relates to an on-board charger and an on-board charging system. Figure 1 Schematic diagram of the structure of section A;

[0017] Figure 3 This invention relates to an on-board charger and an on-board charging system. Figure 1 Schematic diagram of section B in the middle;

[0018] Figure 4 This invention relates to an on-board charger and an on-board charging system. Figure 1 Schematic diagram of the C-section structure.

[0019] As shown in the figure: 1. Charger housing; 2. Mounting base; 3. Buffer assembly; 3.1. Fixing block; 3.2. Connecting block one; 3.3. Fixing rod; 3.4. Damping rod; 3.5. Shock-absorbing spring; 3.6. Buffer spring; 3.7. Sliding sleeve; 3.8. Connecting block two; 3.9. Connecting rod; 3.10. Bolt; 3.11. Slider one; 3.12. Slide groove one; 4. Charger body; 5. Charger cover; 6. Limiting assembly; 6.1. Fixing groove; 6.2. Pull rod; 6.3. Guide rod; 6.4. Limiting block; 6.5. Limiting spring; 7. Heat dissipation assembly; 7.1. Tube body; 7.2. Motor; 7.3. Cooling fan; 7.4. Dustproof net; 7.5. Connecting rod; 8. Handle; 9. Rubber pad; 10. Heat dissipation hole; 11. Through hole; 12. Slider two; 13. Slide groove two. Detailed Implementation

[0020] The present invention is not limited to the following embodiments, and the specific implementation can be determined according to the technical solution of the present invention and the actual situation.

[0021] A vehicle-mounted charger, characterized in that: it includes a charger housing 1, a mounting base 2 is provided inside the charger housing 1, the charger housing 1 and the mounting base 2 are connected by a buffer assembly 3, a charger body 4 is mounted on the mounting base 2, a charger cover 5 is provided on the top of the charger body 4, a limiting assembly 6 is installed on the side wall of the charger housing 1 and a heat dissipation assembly 7 is embedded therein; the buffer assembly 3 includes two fixing blocks 3.1 disposed at the bottom of the charger housing 1 and two connecting blocks 3.2 disposed at the bottom of the mounting base 2, the two fixing blocks 3.1 are fixedly connected by a fixing rod 3.3, the fixing blocks 3.1 are connected to the mounting base 2 by a damping rod 3.4 and a shock-absorbing spring 3.5, and a buffer spring 3.6 is sleeved on the outer side of both ends of the fixing rod 3.3, one end of the buffer spring 3.6 is connected to a sleeved on the fixing rod 3. The outer sliding sleeve 3.7 of the .3 has a connecting block 3.8 on it. The connecting block 3.2 and the connecting block 3.8 on the same side are connected by a connecting rod 3.9. The limiting component 6 includes a fixing groove 6.1 on the side wall of the charger housing 1 and a pull rod 6.2 on one side of the charger housing 1. A guide rod 6.3 that penetrates the side wall of the charger housing 1 is fixedly connected to one side of the pull rod 6.2. A limiting block 6.4 is provided at one end of the guide rod 6.3. The limiting block 6.4 is connected to the side wall of the charger housing 1 by multiple limiting springs 6.5. The heat dissipation component 7 includes a tube 7.1 embedded in the side wall of the charger housing 1. A motor 7.2 is installed inside the tube 7.1. A cooling fan 7.3 is provided at the output end of the motor 7.2. A dustproof net 7.4 is provided at one end of the tube 7.1.

[0022] The charger cover 5 of the present invention is provided with a handle 8, and the bottom of the charger cover 5 is provided with a rubber pad 9.

[0023] The charger housing 1 of the present invention has a plurality of heat dissipation holes 10 and a plurality of wire passage holes 11 on its side wall.

[0024] In this invention, the shock-absorbing spring 3.5 is sleeved on the outside of the damping rod 3.4, and the sliding sleeve 3.7 is connected to the fixed block 3.1 on the same side through the buffer spring 3.6; the connecting rod 3.9 is hinged to the first connecting block 3.2 and the second connecting block 3.8 through bolts 3.10, and the bottom of the sliding sleeve 3.7 is provided with a slider 3.11, and the bottom wall of the charger housing 1 is provided with a groove 3.12 for the slider 3.11 to slide.

[0025] In this invention, both sides of the mounting base 2 are fixedly connected to sliders 12, and the side wall of the charger housing 1 is provided with a sliding groove 13 for sliders 12 to slide.

[0026] In this invention, the side wall of the charger housing 1 has a guide hole on one side of the fixing groove 6.1 for the guide rod 6.3 to pass through. The limiting spring 6.5 is located in the fixing groove 6.1 inside the charger housing 1. The surface of one side of the limiting block 6.4 is a smooth inclined surface.

[0027] In this invention, the motor 7.2 and the tube body 7.1 are fixedly connected by multiple connecting rods 7.5.

[0028] An on-board charger system is characterized in that it includes a charger body 4, a vehicle controller, a battery management system (BMS), a high-voltage battery, and a low-voltage battery. The charger body 4 is connected to the vehicle controller, and the battery management system (BMS), high-voltage battery, and low-voltage battery are all electrically connected.

[0029] The charger body 4 described in this invention includes a control circuit, an AC charging processing circuit, and a charging switch protection circuit, which are electrically connected to each other.

[0030] Working Principle: In specific implementation, the charger body 4 is first installed on the mounting base 2. The charger top cover 5 is then installed on top of the charger body 4 using the handle 8. During installation, the charger top cover 5 moves downward into the charger housing 1, pressing against the limiting block 6.4. Since one side of the limiting block 6.4 is a smooth inclined surface, it slides to one side and compresses the limiting spring 6.5. After the charger top cover 5 passes through, the elastic potential energy of the limiting spring 6.5 restores it to its original shape, thus moving the limiting block 6.4 to one side to limit and fix the charger top cover 5, preventing the charger body 4 from falling off. During long-term operation, the charger body 4 generates a large amount of heat, causing its temperature to rise. The motor 7.2 is started, driving the cooling fan 7.3 to rotate. The rotation of the cooling fan 7.3 blows air from the outside of the charger housing 1 into the inside of the charger housing 1 for air cooling, reducing the temperature of the charger body. The charger body 4 has good temperature control and safety. When the vehicle is in motion, it will shake and vibrate. The damping rod 3.4 and the shock absorber spring 3.5 work together to form a shock absorption structure. At the same time, when the charger body 4 shakes, the height between the mounting base 2 and the bottom wall of the charger housing 1 will change, thereby changing the angle between the connecting rod 3.9 and the fixed rod 3.3. As a result, the sliding sleeve 3.7 will slide on the fixed rod 3.3. At this time, the buffer spring 3.6 will be compressed or stretched. Therefore, the elastic potential energy of the buffer spring 3.6 plays a buffering role, thereby reducing the shaking and vibration generated during vehicle operation, providing good protection. When the charger body 4 is damaged, the pull rod 7.5 is pulled to one side, which drives the limit block 6.4 to one side and compresses the limit spring 6.5 through the guide rod 6.3. The charger top cover 5 can be removed through the handle 8, which is convenient for disassembly and facilitates the inspection and maintenance of the charger body 4, making it practical.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An on-board charger, characterized in that: The device includes a charger housing (1), a mounting base (2) inside the charger housing (1), and a buffer assembly (3) connecting the charger housing (1) and the mounting base (2). A charger body (4) is mounted on the mounting base (2), and a charger cover (5) is provided on the top of the charger body (4). A limit assembly (6) and a heat dissipation assembly (7) are installed on the side wall of the charger housing (1). The buffer assembly (3) includes components disposed at the bottom of the charger housing (1). The mounting base (2) has two fixed blocks (3.1) and two connecting blocks (3.2) at the bottom. The two fixed blocks (3.1) are fixedly connected by a fixed rod (3.3). The fixed blocks (3.1) and the mounting base (2) are connected by a damping rod (3.4) and a shock-absorbing spring (3.5). Both ends of the fixed rod (3.3) are fitted with buffer springs (3.6). One end of the buffer spring (3.6) is connected to a sliding spring fitted on the outside of the fixed rod (3.3). The sliding sleeve (3.7) is provided with a second connecting block (3.8), and the first connecting block (3.2) and the second connecting block (3.8) located on the same side are connected by a connecting rod (3.9); the limiting component (6) includes a fixing groove (6.1) provided on the side wall of the charger housing (1) and a pull rod (6.2) provided on one side of the charger housing (1), and a guide rod (6.3) that penetrates the side wall of the charger housing (1) is fixedly connected to one side of the pull rod (6.2). The guide rod (6.3) is provided with a limiting block (6.4) at one end, and the limiting block (6.4) is connected to the side wall of the charger housing (1) by a plurality of limiting springs (6.5); the heat dissipation assembly (7) includes a tube (7.1) embedded in the side wall of the charger housing (1), a motor (7.2) is installed inside the tube (7.1), a cooling fan (7.3) is provided at the output end of the motor (7.2), and a dustproof net (7.4) is provided at one end of the tube (7.1).

2. The on-board charger according to claim 1, characterized in that: The charger cover (5) is provided with a handle (8), and the bottom of the charger cover (5) is provided with a rubber pad (9).

3. The on-board charger according to claim 1, characterized in that: The charger housing (1) has multiple heat dissipation holes (10) and multiple wire passage holes (11) on its side wall.

4. The on-board charger according to claim 1, characterized in that: The shock-absorbing spring (3.5) is sleeved on the outside of the damping rod (3.4), and the sliding sleeve (3.7) is connected to the fixed block (3.1) on the same side through the buffer spring (3.6); the connecting rod (3.9) is hinged to the first connecting block (3.2) and the second connecting block (3.8) by bolts (3.10); the bottom of the sliding sleeve (3.7) is provided with a slider (3.11), and the bottom wall of the charger housing (1) is provided with a groove (3.12) for the slider (3.11) to slide.

5. The on-board charger according to claim 1, characterized in that: The mounting base (2) is fixedly connected to two sliders (12) on both sides, and the side wall of the charger housing (1) is provided with a sliding groove (13) for the sliders (12) to slide.

6. The on-board charger according to claim 1, characterized in that: The charger housing (1) has a guide hole on one side of the fixing groove (6.1) for the guide rod (6.3) to pass through. The limiting spring (6.5) is located in the fixing groove (6.1) inside the charger housing (1). The surface of the limiting block (6.4) is a smooth inclined surface.

7. The on-board charger according to claim 1, characterized in that: The motor (7.2) and the tube body (7.1) are fixedly connected by multiple connecting rods (7.5).

8. An on-board charger system, characterized in that: It includes a charger body (4), a vehicle controller, a battery management system (BMS), a high-voltage battery, and a low-voltage battery. The charger body (4) is connected to the vehicle controller, and the battery management system (BMS), high-voltage battery, and low-voltage battery are all electrically connected.

9. The on-board charger system according to claim 8, characterized in that: The charger body (4) includes a control circuit, an AC charging processing circuit, and a charging switch protection circuit, which are electrically connected to each other.

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