Bidirectional vehicle-mounted charger capable of realizing AC-DC conversion

Abstract

The invention relates to the technical field of vehicle-mounted two-way chargers, and particularly discloses a two-way vehicle-mounted charger capable of realizing alternating current and direct current conversion, which comprises a charger shell, a plurality of groups of connecting grooves are formed in two sides of the charger shell, and are uniformly distributed in two sides of the charger shell; a connecting groove is formed in the top of the charger shell, sliding grooves are formed in the two sides of the inner wall of the connecting groove, clamping ports are formed in the inner walls of the sliding grooves, the multiple sets of clamping ports are evenly distributed in the sliding grooves, mounting supports are slidably connected to the inner walls of the sliding grooves, and the top of the charger shell is in threaded connection with a top shell through screws. One side of the charger shell communicates with a water inlet pipe and a water outlet pipe, and the water inlet pipe and the water outlet pipe are both fixedly connected with one side of the charger shell, the bidirectional vehicle-mounted charger capable of achieving alternating current and direct current conversion solves the problem that an existing vehicle-mounted charger is inconvenient to install rapidly, vibration is reduced, and meanwhile the installation flexibility of the charger is improved.

Description

Technical Field

[0001] This invention relates to the field of on-board bidirectional charger technology, specifically to a bidirectional on-board charger capable of AC-DC conversion. Background Technology

[0002] Bidirectional on-board chargers are core components for electric energy interaction in new energy vehicles. They need to achieve bidirectional AC and DC conversion, charging the power battery and inverting battery energy back to the grid. Their operational stability directly affects the vehicle's range and energy utilization rate. Chargers operate with high power density, easily generating a large amount of heat. At the same time, frequent vibrations in vehicle operating conditions make the precision components inside the charger susceptible to impact damage. In addition, chargers need to be adaptable to the installation space of different vehicle models, requiring high installation flexibility. The heat dissipation structure is simple, and heat accumulation can easily lead to component aging and conversion efficiency degradation. With the development of new energy vehicle technology, the requirements for the heat dissipation efficiency, shock absorption protection, installation flexibility, and conversion stability of bidirectional on-board chargers have significantly increased.

[0003] Chinese patent CN112888274A discloses a heat dissipation structure and an on-board charger, which can save area and maximize the effective heat dissipation area of ​​the metal substrate. However, it cannot achieve heat dissipation filtration and reduce the impact of vibration on the equipment. Heat accumulation leads to a decrease in conversion efficiency and a shortened component life. On-board vibration can easily cause damage to internal components and loose wiring. Summary of the Invention

[0004] To solve the above problems, the present invention is implemented through the following technical solution: a bidirectional vehicle-mounted charger capable of AC-DC conversion, comprising a charger housing, connecting grooves on both sides of the charger housing, multiple sets of connecting grooves evenly distributed on both sides of the charger housing, sliding grooves on both sides of the inner wall of the connecting grooves, locking interfaces on the inner wall of the sliding grooves, multiple sets of locking interfaces evenly distributed inside the sliding grooves, a mounting bracket slidably connected to the inner wall of the sliding grooves, a top housing connected to the top of the charger housing by screw threads, an inlet pipe and an outlet pipe respectively connected to one side of the charger housing, both the inlet pipe and the outlet pipe being fixedly connected to one side of the charger housing, the inlet pipe penetrating the charger housing and connecting to a filter mechanism, the inner wall of the charger housing being fixedly connected to the filter mechanism, a heat dissipation mechanism being fixedly connected to the portion of the charger housing located on one side of the filter mechanism, an L-shaped partition being fixedly connected to the bottom of the inner wall of the charger housing, and one side of the filter mechanism being fixedly connected to the L-shaped partition; The mounting bracket includes a first connecting bracket with a connecting hole on its inner wall. A connecting slide is fixedly connected to one side of the first connecting bracket. Two sets of connecting slides are provided and symmetrically distributed on one side of the first connecting bracket. A snap-fit ​​mechanism is fixedly connected to the top of the connecting slide and is fixedly connected to the side of the first connecting bracket.

[0005] Preferably, one side of the connecting slide bar is slidably connected to the inner wall of the sliding groove. The connecting holes are provided in multiple sets and distributed inside the first connecting bracket. The two sets of connecting slide bars on one side of the first connecting bracket are aligned with the sliding groove in the connecting groove and inserted and slid. After being adjusted to a suitable position according to the installation space requirements, they are automatically engaged and limited by the snap-fit ​​mechanism with the corresponding snap-fit ​​interface in the sliding groove.

[0006] Preferably, the locking mechanism includes a second connecting bracket, a first spring fixedly connected to one side of the second connecting bracket, multiple sets of the first springs being evenly distributed on one side of the second connecting bracket, a third connecting bracket fixedly connected to one side of the second connecting bracket via the first springs, an elastic pad fixedly connected to one side of the third connecting bracket, a locking block passing through the elastic pad and fixedly connected to one side of the third connecting bracket, multiple sets of the locking blocks being fixedly connected to the third connecting bracket, a connecting rod fixedly connected to the side of the third connecting bracket away from the locking block, two sets of the connecting rods being symmetrically distributed on one side of the third connecting bracket, a disassembly block fixedly connected to one side of the third connecting bracket via the connecting rods, and the connecting rods passing through the second connecting bracket and slidably connected to the second connecting bracket.

[0007] Preferably, the bottom of the second connecting bracket is fixedly connected to the top of the connecting slide, and one side of the second connecting bracket is fixedly connected to the side of the first connecting bracket. When installing the charger, the connecting slide of the mounting bracket is aligned with the sliding groove of the charger housing and inserted and slid. During the movement, the snap-fit ​​block is squeezed by the inner wall of the sliding groove, which drives the third connecting bracket to compress the first spring and contract. When it slides to the appropriate installation position, the snap-fit ​​block is aligned with the corresponding snap-fit ​​interface in the sliding groove. Under the elastic force of the first spring, it automatically pops out and snaps into the snap-fit ​​interface, which can form a radial limit after snapping into the snap-fit ​​interface. At the same time, the pop-out of the snap-fit ​​block can position the installation process, improve the installation efficiency and positioning accuracy. The elastic gasket fits tightly against the groove wall. The elastic gasket and the first spring can also work together to absorb some vibration. When disassembling, pull the disassembly blocks on both sides, and the connecting rod will simultaneously pull the third connecting bracket to compress the first spring, so that the snap-fit ​​block is disengaged from the snap-fit ​​interface, and the mounting bracket can be pulled out.

[0008] Preferably, the filtration mechanism includes a connecting housing, which has a first cavity, a second cavity, and a third cavity inside. The fixed end of a first electric telescopic rod is fixedly connected to the top of the inner wall of the first cavity. The movable end of the first electric telescopic rod extends into the second cavity and is fixedly connected to a brush head. A push-out block is fixedly connected to the bottom of the brush head. A filter screen is fixedly connected to the part of the second cavity located on one side of the brush head. A connection port is opened in the part of the second cavity located on one side of the filter screen. The bottom of the inner wall of the second cavity communicates with the third cavity through the connection port. An elastic rubber block is fixedly connected to one side of the inner wall of the connection port. An inlet and an outlet are respectively opened on both sides of the connecting housing.

[0009] Preferably, the bottom of the connecting box is fixedly connected to the inner wall of the charger housing, the side of the connecting box is fixedly connected to one side of the L-shaped partition, and the water inlet is connected to the water inlet pipe. When a lot of impurities accumulate on the surface of the filter screen, the first electric telescopic rod is activated, and its movable end pushes the brush head to move along the surface of the filter screen to automatically clean the filter screen. The attached impurities are scraped off and enter the third cavity for temporary storage through the connecting port. During the movement, the push-out block at the bottom of the brush head can squeeze the elastic rubber block, causing it to undergo elastic deformation, thereby opening the connecting port and ensuring that the impurities can smoothly enter the third cavity. When the brush head is reset, the elastic rubber block returns to its original shape under its own elasticity, resealing the connecting port to prevent impurities from re-entering the second cavity. The cooling water after filtration and cleaning flows out through the water outlet, while reducing the impact of water flow on internal components.

[0010] Preferably, the heat dissipation mechanism includes a charger body, on which a first heat dissipation shell is sleeved and fixedly connected. A first heat dissipation bracket is fixedly connected to the side of the first heat dissipation shell. Multiple sets of the first heat dissipation brackets are provided and evenly distributed on the top, bottom, and sides of the first heat dissipation shell. A shock-absorbing pad is fixedly connected to the portion of the side of the first heat dissipation shell located between adjacent first heat dissipation brackets. A second heat dissipation shell is fixedly connected to the side of the first heat dissipation shell via the first heat dissipation brackets. A second heat dissipation bracket is fixedly connected to the side of the second heat dissipation shell via a bracket. A heat dissipation device is fixedly connected to the side of the second heat dissipation shell via a bracket. A third heat dissipation bracket is fixedly connected to the top and bottom of the second heat dissipation bracket via a bracket. Multiple sets of the third heat dissipation brackets are provided and evenly distributed on the top and bottom of the second heat dissipation brackets. A first heat sink is fixedly connected to one side of the third heat dissipation bracket.

[0011] Preferably, the bottom of the second heat dissipation bracket is fixedly connected to the bottom of the inner wall of the charger housing via a third heat dissipation bracket, the side of the charger body is fixedly connected to the L-shaped partition via a bracket, and the heat dissipation device is fixedly connected to the inner wall of the charger housing via a bracket.

[0012] Preferably, the heat dissipation device includes a fourth heat dissipation bracket, on which a second heat dissipation fin is fixedly connected. Multiple sets of the second heat dissipation fins are evenly distributed on the side of the fourth heat dissipation bracket. A heat dissipation groove is formed at the bottom of each second heat dissipation fin, and multiple sets of the heat dissipation grooves are evenly distributed at the bottom of the second heat dissipation fins. A fourth heat dissipation outer shell is fixedly connected to the side of the multiple sets of second heat dissipation fins away from the fourth heat dissipation bracket. The side of the fourth heat dissipation outer shell away from the second heat dissipation fins is fixedly connected to the inner wall of the charger housing. The heat generated by the charger body during operation is first transferred to the first heat dissipation outer shell covering it. The first heat dissipation outer shell quickly conducts the heat to the multiple sets of first heat dissipation brackets, thereby increasing the heat dissipation capacity. The large heat dissipation contact area initially improves heat dissipation efficiency. At the same time, the first heat dissipation bracket further transfers heat to the second heat dissipation shell. The second heat dissipation shell, through its own thermal conductivity and the second heat dissipation bracket on the side, diverts heat to the third heat dissipation bracket at the top and bottom and the heat dissipation device on the side. Since the space reserved when the mounting bracket supports the bottom of the charger shell, heat dissipation can be carried out on the top, bottom and sides of the charger body. In addition, the shock-absorbing pad between the first heat dissipation shell and the second heat dissipation shell protects the charger body and can effectively reduce the impact of vibration generated by vehicle driving or equipment operation on the components of the heat dissipation mechanism, and prevent the heat dissipation bracket and heat sink from loosening, deforming or breaking due to vibration.

[0013] This invention provides a bidirectional on-board charger capable of AC-DC conversion. It offers the following advantages: 1. This bidirectional on-board charger capable of AC-DC conversion can quickly fix the charger by inserting the connecting slide bar into the sliding groove and using the snap-fit ​​mechanism to automatically engage and limit the position with the snap-fit ​​interface. This solves the problems of cumbersome installation and poor adaptability of traditional methods, improving installation flexibility and efficiency. During operation, the filtration mechanism filters impurities in the cooling water to avoid affecting heat dissipation; the heat dissipation mechanism works in conjunction with the water cooling circulation to prevent high temperature damage to components; the L-shaped partition separates the internal structure and optimizes the water flow path, improving overall stability and ensuring long-term reliable operation of the AC-DC conversion function in complex on-board environments.

[0014] 2. This bidirectional on-board charger, capable of AC-DC conversion, automatically pops out and engages with the card interface after being compressed and contracted during installation, forming a reliable radial limit to prevent loosening and displacement caused by vibration, thus improving installation stability and positioning accuracy. The elastic pad and the first spring work together to dampen vibration and reduce the impact of vibration on the machine body. The mounting bracket has reserved bottom space to reduce heat accumulation and assist in heat dissipation. During disassembly, pulling the disassembly block can disengage the card interface, achieving quick disassembly and reducing difficulty. It has the advantages of quick assembly and disassembly, stable fixation, and auxiliary vibration damping and heat dissipation, ensuring long-term stable operation of the equipment.

[0015] 3. This bidirectional on-board charger, capable of AC-DC conversion, allows cooling water to enter the filtration mechanism via the inlet pipe. Impurities are intercepted by the filter screen, preventing blockage of the heat dissipation mechanism and reducing heat dissipation efficiency, thus ensuring stable water cooling circulation. After impurities accumulate on the filter screen, the electric telescopic rod is activated to push the brush head to clean the screen. The ejector block squeezes the elastic rubber block to open the connection port, allowing impurities to temporarily enter the cavity for storage. After the brush head resets, the rubber block automatically springs back, preventing backflow of impurities. The filtered cooling water then participates in heat exchange, solving the problem of easy blockage in the water cooling system and improving equipment reliability and ease of maintenance.

[0016] 4. This bidirectional on-board charger, capable of AC-DC conversion, conducts heat generated by the charger body through the first heat dissipation shell and the first heat dissipation bracket to the second heat dissipation shell, and then distributes it to the third heat dissipation bracket to achieve multi-directional heat dissipation, avoiding heat accumulation. The heat dissipation device expands the heat dissipation area through multiple sets of heat dissipation fins and bottom heat dissipation grooves, improving convection and water cooling heat exchange efficiency. The fourth heat dissipation shell integrates and fixes the heat dissipation fins and assists in heat conduction. The shock-absorbing pads between the heat dissipation mechanisms can reduce vibration, prevent the heat dissipation components from loosening and being damaged, and ensure the stability and service life of the heat dissipation structure. The filtered cooling water exchanges heat with each heat dissipation component, improving heat dissipation efficiency and avoiding performance degradation at high temperatures. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the bidirectional on-board charger structure of the present invention, which enables AC-DC conversion. Figure 2 This is a schematic diagram of the mounting support connection structure of the present invention; Figure 3 This is an enlarged structural diagram of part A of the present invention; Figure 4 This is a schematic diagram of the connection structure of the heat dissipation mechanism of the present invention; Figure 5 This is a schematic diagram of the charger housing structure of the present invention; Figure 6 This is a schematic diagram of the mounting support structure of the present invention; Figure 7 This is a schematic diagram of the connecting slide bar connection structure of the present invention; Figure 8 This is a schematic diagram of the snap-fit ​​mechanism of the present invention; Figure 9 This is a schematic diagram of the filter mechanism structure of the present invention; Figure 10 This is a schematic diagram of the first cavity connection structure of the present invention; Figure 11 This is a schematic diagram of the second cavity connection structure of the present invention; Figure 12 This is an enlarged structural diagram of part B of the present invention; Figure 13 This is a schematic diagram of the heat dissipation mechanism of the present invention; Figure 14 This is a schematic diagram of the connection structure of the second heat dissipation bracket of the present invention; Figure 15 This is an enlarged structural diagram of part C of the present invention; Figure 16 This is a schematic diagram of the heat dissipation device of the present invention.

[0018] In the diagram: 1. Charger housing; 2. Connecting groove; 3. Sliding groove; 4. Mounting bracket; 41. First connecting bracket; 42. Connecting hole; 43. Connecting slide bar; 44. Snap-fit ​​mechanism; 441. Second connecting bracket; 442. First spring; 443. Third connecting bracket; 444. Elastic washer; 445. Snap-fit ​​block; 446. Connecting rod; 447. Disassembly block; 5. Top housing; 6. Water inlet pipe; 7. Water outlet pipe; 8. Filter mechanism; 81. Connecting box; 82. First cavity; 83. Second cavity; 84. Third cavity; 85. First electric... 86. Telescopic rod; 87. Brush head; 88. Filter screen; 89. Connecting port; 80. Elastic rubber block; 810. Water inlet; 811. Water outlet; 812. Top-out block; 91. Heat dissipation mechanism; 92. Charger body; 93. First heat dissipation shell; 94. First heat dissipation bracket; 95. Shock-absorbing pad; 96. Second heat dissipation shell; 97. Second heat dissipation bracket; 98. Heat dissipation device; 99. Fourth heat dissipation bracket; 90. Second heat dissipation fin; 91. Heat dissipation groove; 92. Fourth heat dissipation shell; 93. Third heat dissipation bracket; 94. First heat dissipation fin; 10. L-shaped partition; 11. Card interface. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] For the first embodiment, please refer to... Figures 1-7This invention provides a technical solution that solves the problem of inconvenient and quick installation of current vehicle chargers, improving the installation flexibility of the charger: a bidirectional vehicle charger capable of AC-DC conversion includes a charger housing 1, with connecting slots 2 on both sides of the charger housing 1, multiple sets of connecting slots 2 evenly distributed on both sides of the charger housing 1, and sliding slots 3 on both sides of the inner wall of the connecting slots 2, with locking interfaces 11 on the inner wall of the sliding slots 3, multiple sets of locking interfaces 11 evenly distributed inside the sliding slots 3, and mounting brackets slidably connected to the inner wall of the sliding slots 3. Support 4, top shell 5 is connected to the top of charger shell 1 by screw thread, water inlet pipe 6 and water outlet pipe 7 are respectively connected to one side of charger shell 1, water inlet pipe 6 and water outlet pipe 7 are fixedly connected to one side of charger shell 1, water inlet pipe 6 passes through charger shell 1 and is connected to filter mechanism 8, inner wall of charger shell 1 is fixedly connected to filter mechanism 8, heat dissipation mechanism 9 is fixedly connected to the part of charger shell 1 located on one side of filter mechanism 8, L-shaped partition 10 is fixedly connected to the bottom of inner wall of charger shell 1, and one side of filter mechanism 8 is fixedly connected to L-shaped partition 10; The mounting bracket 4 includes a first connecting bracket 41. The inner wall of the first connecting bracket 41 has a connecting hole 42. A connecting slide 43 is fixedly connected to one side of the first connecting bracket 41. Two sets of connecting slides 43 are provided and symmetrically distributed on one side of the first connecting bracket 41. A snap-fit ​​mechanism 44 is fixedly connected to the top of the connecting slide 43. The snap-fit ​​mechanism 44 is fixedly connected to the side of the first connecting bracket 41.

[0021] One side of the connecting slide bar 43 is slidably connected to the inner wall of the sliding groove 3, and multiple sets of connecting holes 42 are provided and distributed inside the first connecting bracket 41.

[0022] In use, the two sets of connecting slides 43 on one side of the first connecting bracket 41 are aligned with the sliding grooves 3 in the connecting groove 2 and inserted and slid. After adjusting to the appropriate position according to the installation space requirements, the snap-fit ​​mechanism 44 automatically engages with the corresponding snap-fit ​​interface 11 in the sliding groove 3 to complete the quick installation and fixation of the charger. This effectively solves the problems of cumbersome installation steps and poor adaptability of traditional vehicle chargers, and improves installation flexibility and assembly efficiency. When the charger is working, the filter mechanism 8 can filter the incoming cooling water to prevent impurities from entering the heat dissipation mechanism 9 and affecting the heat dissipation effect. The water cooling circulation system formed by the heat dissipation mechanism 9, the inlet pipe 6, and the outlet pipe 7 works together to quickly remove the heat generated inside the charger and prevent the performance from deteriorating or the components from being damaged due to excessive temperature. The L-shaped partition 10 divides the internal structure and improves the overall stability. Through the synergistic effect of the above structures, the charger can be installed quickly and flexibly while effectively improving the heat dissipation performance and structural stability, ensuring that the bidirectional AC / DC conversion function can operate reliably for a long time in complex vehicle environments.

[0023] Second embodiment, please refer to Figures 1-8Based on the first embodiment, the present invention provides a technical solution that solves the problem of low efficiency in installing or removing on-board chargers while reducing vibration to the main body of the on-board charger: the snap-fit ​​mechanism 44 includes a second connecting bracket 441, a first spring 442 fixedly connected to one side of the second connecting bracket 441, multiple sets of the first springs 442 being evenly distributed on one side of the second connecting bracket 441, a third connecting bracket 443 fixedly connected to one side of the second connecting bracket 441 via the first springs 442, and an elastic pad fixedly connected to one side of the third connecting bracket 443. 444, A snap-fit ​​block 445 is fixedly connected to one side of the third connecting bracket 443 through an elastic gasket 444. Multiple sets of snap-fit ​​blocks 445 are provided and are all fixedly connected to the third connecting bracket 443. A connecting rod 446 is fixedly connected to the side of the third connecting bracket 443 away from the snap-fit ​​block 445. Two sets of connecting rods 446 are provided and are symmetrically distributed on one side of the third connecting bracket 443. A disassembly block 447 is fixedly connected to one side of the third connecting bracket 443 through the connecting rod 446. The connecting rod 446 passes through the second connecting bracket 441 and is slidably connected to the second connecting bracket 441.

[0024] The bottom of the second connecting bracket 441 is fixedly connected to the top of the connecting slide 43, and one side of the second connecting bracket 441 is fixedly connected to the side of the first connecting bracket 41.

[0025] During use, when installing the charger, the connecting slide 43 of the mounting bracket 4 is aligned with the sliding groove 3 of the charger housing 1 and inserted and slid. During the movement, the locking block 445 is squeezed by the inner wall of the sliding groove 3, which causes the third connecting bracket 443 to compress the first spring 442 and contract. After sliding to the appropriate installation position, the locking block 445 aligns with the corresponding locking interface 11 in the sliding groove 3, and automatically pops out and locks into the locking interface 11 under the elastic force of the first spring 442. After locking into the locking interface 11, it can form a radial limit, effectively preventing the mounting bracket 4 from loosening, displacing or even detaching during vehicle travel bumps or equipment vibration, thus improving the connection strength and stability of the installation structure. At the same time, the pop-out of the locking block 445 can position the installation process, improving installation efficiency and positioning accuracy. The elastic gasket 444 fits tightly against the groove wall, realizing the mounting bracket 4 The quick and secure snap-fit ​​design solves the problems of poor compatibility and low disassembly efficiency of traditional fixing methods. The elastic pad 444 and the first spring 442 can also work together to absorb some vibration, reducing the impact of vibration on the main body of the on-board charger. In addition, the space reserved when the mounting bracket 4 supports the bottom of the charger shell 1 can reduce heat accumulation and help improve the heat dissipation effect. When disassembly is required, pull the disassembly blocks 447 on both sides, and the third connecting bracket 443 will be pulled simultaneously through the connecting rod 446 to compress the first spring 442, so that the snap-fit ​​block 445 is disengaged from the snap-fit ​​interface 11, and the mounting bracket 4 can be pulled out to achieve quick disassembly and reduce the difficulty of disassembly and assembly. Through the elastic snap-fit ​​structure, while realizing the quick assembly and disassembly and secure fixing of the charger, it also has the effects of auxiliary shock absorption and auxiliary heat dissipation, retaining the original shock absorption, heat dissipation and anti-interference advantages, and ensuring the long-term stable operation of the bidirectional on-board charger.

[0026] Third embodiment, please refer to Figures 1-12 Based on the second embodiment, the present invention provides a technical solution that solves the problems of easy clogging and reduced heat dissipation efficiency in existing water cooling systems: The filter mechanism 8 includes a connecting box 81, which has a first cavity 82, a second cavity 83 and a third cavity 84. The top of the inner wall of the first cavity 82 is fixedly connected to the fixed end of the first electric telescopic rod 85. The movable end of the first electric telescopic rod 85 extends to the second cavity 83 and is fixedly connected to a brush head 86. The bottom of the brush head 86 is fixedly connected to a push-out block 812. The part of the second cavity 83 located on one side of the brush head 86 is fixedly connected to a filter screen 87. The part of the second cavity 83 located on one side of the filter screen 87 has a connection port 88. The bottom of the inner wall of the second cavity 83 communicates with the third cavity 84 through the connection port 88. An elastic rubber block 89 is fixedly connected to one side of the inner wall of the connection port 88. The connecting box 81 has an inlet 810 and an outlet 811 on both sides.

[0027] The bottom of the connecting box 81 is fixedly connected to the inner wall of the charger housing 1, the side of the connecting box 81 is fixedly connected to one side of the L-shaped partition 10, and the water inlet 810 is connected to the water inlet pipe 6.

[0028] In use, cooling water enters the inlet 810 of the filter mechanism 8 through the inlet pipe 6 and flows into the second cavity 83. The filter screen 87 filters the cooling water, intercepting impurities, particles, or sediments in the water to prevent them from entering the heat dissipation mechanism 9 and causing blockage, wear, or reduced heat dissipation efficiency, thus ensuring the long-term stable operation of the water cooling circulation system. During the filtration process, when a large amount of impurities accumulate on the surface of the filter screen 87, the first electric telescopic rod 85 is activated. Its movable end pushes the brush head 86 to move along the surface of the filter screen 87, automatically cleaning the filter screen 87. The attached impurities are scraped off and temporarily stored in the third cavity 84 through the connection port 88. The ejector block 812 at the bottom of the brush head 86 can squeeze the elastic rubber block 89 during the movement, making... The elastic deformation opens the connection port 88, ensuring that impurities can smoothly enter the third cavity 84. When the brush head 86 resets, the elastic rubber block 89 returns to its original shape under its own elasticity, resealing the connection port 88 to prevent impurities from re-entering the second cavity 83. The filtered and cleaned cooling water flows out through the outlet 811, reducing the impact of water flow on internal components. It then enters the heat dissipation mechanism 9 to participate in heat exchange, effectively improving heat dissipation efficiency and extending the service life of the equipment. The L-shaped baffle 10 guides the water flow, solving the problems of easy clogging and reduced heat dissipation efficiency in existing water cooling systems. It also improves the reliability and maintenance convenience of the charger, ensuring long-term stable operation of the bidirectional on-board charger under complex working conditions.

[0029] For the fourth embodiment, please refer to [link / reference]. Figures 1-16 Based on the third embodiment, the present invention provides a technical solution that solves the problem of insufficient heat dissipation efficiency of traditional chargers and also improves the vibration resistance and stability of the heat dissipation mechanism: The heat dissipation mechanism 9 includes a charger body 91, a first heat dissipation shell 92 is sleeved and fixedly connected to the charger body 91, a first heat dissipation bracket 93 is fixedly connected to the side of the first heat dissipation shell 92, multiple sets of the first heat dissipation bracket 93 are provided and evenly distributed on the top, bottom and sides of the first heat dissipation shell 92, a shock-absorbing pad 94 is fixedly connected to the part of the side of the first heat dissipation shell 92 located between adjacent first heat dissipation brackets 93, a second heat dissipation shell 95 is fixedly connected to the side of the first heat dissipation shell 92 through the first heat dissipation bracket 93, a second heat dissipation bracket 96 is fixedly connected to the side of the second heat dissipation shell 95 through the bracket, a heat dissipation device 97 is fixedly connected to the side of the second heat dissipation shell 95 through the bracket, a third heat dissipation bracket 98 is fixedly connected to the top and bottom of the second heat dissipation bracket 96 through the bracket, multiple sets of the third heat dissipation bracket 98 are provided and evenly distributed on the top and bottom of the second heat dissipation bracket 96, a first heat sink 99 is fixedly connected to one side of the third heat dissipation bracket 98.

[0030] The bottom of the second heat dissipation bracket 96 is fixedly connected to the bottom of the inner wall of the charger housing 1 via the third heat dissipation bracket 98. The side of the charger body 91 is fixedly connected to the L-shaped partition 10 via the bracket. The heat dissipation device 97 is fixedly connected to the inner wall of the charger housing 1 via the bracket.

[0031] The heat dissipation device 97 includes a fourth heat dissipation bracket 971. A second heat dissipation fin 972 is fixedly connected to the side of the fourth heat dissipation bracket 971. Multiple sets of the second heat dissipation fins 972 are evenly distributed on the side of the fourth heat dissipation bracket 971. A heat dissipation groove 973 is opened at the bottom of the second heat dissipation fin 972. Multiple sets of the heat dissipation groove 973 are evenly distributed at the bottom of the second heat dissipation fin 972. A fourth heat dissipation shell 974 is fixedly connected to the side of the multiple sets of second heat dissipation fins 972 away from the fourth heat dissipation bracket 971. The side of the fourth heat dissipation shell 974 away from the second heat dissipation fins 972 is fixedly connected to the inner wall of the charger shell 1.

[0032] During use, the heat generated by the charger body 91 is first transferred to the first heat dissipation shell 92 covering it. The first heat dissipation shell 92 quickly conducts the heat to multiple sets of first heat dissipation brackets 93, initially improving heat dissipation efficiency by increasing the heat dissipation contact area. At the same time, the first heat dissipation brackets 93 further transfer the heat to the second heat dissipation shell 95. The second heat dissipation shell 95, through its own thermal conductivity and the second heat dissipation brackets 96 on the side, diverts the heat to the third heat dissipation brackets 98 at the top and bottom and the heat dissipation device 97 on the side, achieving multi-directional heat dissipation. Since the space reserved when the mounting bracket 4 supports the bottom of the charger shell 1, heat dissipation can be carried out on the top, bottom and sides of the charger body 91, avoiding heat accumulation around the charger body 91. During the heat dissipation process of the heat dissipation device 97, the multiple sets of second heat dissipation fins 972 on the fourth heat dissipation bracket 971 have a large heat dissipation area, and the multiple sets of heat dissipation grooves 973 opened at the bottom can increase the contact area with the coolant and improve the heat dissipation efficiency. The fourth heat dissipation shell 974 can then dissipate the dispersed second heat dissipation fins 972. The integrated and fixed structure also assists in the conduction of some heat to the charger housing 1, achieving heat dissipation. In addition, the shock-absorbing pad 94 between the first heat dissipation housing 92 and the second heat dissipation housing 95 protects the charger body 91 while effectively reducing the impact of vibrations generated by vehicle driving or equipment operation on the components of the heat dissipation mechanism 9, preventing the heat dissipation bracket and heat sink from loosening, deforming or breaking due to vibration, and ensuring the stability and service life of the heat dissipation structure. At the same time, the cooling water filtered by the filtration mechanism 8 in the third embodiment flows into the water-cooled circulation channel around the heat dissipation mechanism 9 through the outlet 811, and exchanges heat with the heat dissipation device 97, quickly removing the heat conducted to each heat dissipation component, improving heat dissipation efficiency, and effectively preventing the charger body 91 from performance degradation or damage to core components due to high temperature. The L-shaped partition 10 guides the flow path of the cooling water, solving the problem of insufficient heat dissipation efficiency of traditional chargers, and also improving the vibration resistance and stability of the heat dissipation mechanism, ensuring the long-term stable operation of the bidirectional on-board charger under complex on-board conditions, and ensuring the accuracy and reliability of AC-DC conversion.

[0033] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A bidirectional on-board charger capable of AC-DC conversion, characterized in that: The charger includes a charger housing (1), on both sides of which are provided connecting grooves (2). Multiple sets of connecting grooves (2) are provided and evenly distributed on both sides of the charger housing (1). Sliding grooves (3) are provided on both sides of the inner wall of each connecting groove (2). A locking interface (11) is provided on the inner wall of each sliding groove (3). Multiple sets of locking interfaces (11) are provided and evenly distributed inside the sliding groove (3). A mounting bracket (4) is slidably connected to the inner wall of each sliding groove (3). A top housing (5) is threadedly connected to the top of the charger housing (1) via screws. One side is connected to an inlet pipe (6) and an outlet pipe (7). The inlet pipe (6) and the outlet pipe (7) are fixedly connected to one side of the charger housing (1). The inlet pipe (6) passes through the charger housing (1) and is connected to a filter mechanism (8). The inner wall of the charger housing (1) is fixedly connected to the filter mechanism (8). The part of the charger housing (1) located on one side of the filter mechanism (8) is fixedly connected to a heat dissipation mechanism (9). The bottom of the inner wall of the charger housing (1) is fixedly connected to an L-shaped partition (10). One side of the filter mechanism (8) is fixedly connected to the L-shaped partition (10). The mounting bracket (4) includes a first connecting bracket (41), the inner wall of the first connecting bracket (41) is provided with a connecting hole (42), a connecting slide (43) is fixedly connected to one side of the first connecting bracket (41), the connecting slide (43) is provided in two sets and symmetrically distributed on one side of the first connecting bracket (41), a snap-fit ​​mechanism (44) is fixedly connected to the top of the connecting slide (43), and the snap-fit ​​mechanism (44) is fixedly connected to the side of the first connecting bracket (41).

2. The bidirectional on-board charger capable of AC-DC conversion according to claim 1, characterized in that: The connecting slide (43) is slidably connected to the inner wall of the sliding groove (3) on one side, and the connecting holes (42) are provided in multiple sets and distributed inside the first connecting bracket (41).

3. A bidirectional on-board charger capable of AC-DC conversion according to claim 1, characterized in that: The snap-fit ​​mechanism (44) includes a second connecting bracket (441). A first spring (442) is fixedly connected to one side of the second connecting bracket (441). Multiple sets of the first springs (442) are evenly distributed on one side of the second connecting bracket (441). A third connecting bracket (443) is fixedly connected to one side of the second connecting bracket (441) via the first springs (442). An elastic pad (444) is fixedly connected to one side of the third connecting bracket (443). A snap-fit ​​mechanism passes through the elastic pad (444) and is fixedly connected to one side of the third connecting bracket (443). Block (445), the snap-fit ​​block (445) is provided in multiple sets and is fixedly connected to the third connecting bracket (443). The third connecting bracket (443) is fixedly connected to a connecting rod (446) on the side away from the snap-fit ​​block (445). The connecting rod (446) is provided in two sets and is symmetrically distributed on one side of the third connecting bracket (443). The third connecting bracket (443) is fixedly connected to a disassembly block (447) on one side through the connecting rod (446). The connecting rod (446) passes through the second connecting bracket (441) and is slidably connected to the second connecting bracket (441).

4. A bidirectional on-board charger capable of AC-DC conversion according to claim 3, characterized in that: The bottom of the second connecting bracket (441) is fixedly connected to the top of the connecting slide (43), and one side of the second connecting bracket (441) is fixedly connected to the side of the first connecting bracket (41).

5. A bidirectional on-board charger capable of AC-DC conversion according to claim 1, characterized in that: The filtration mechanism (8) includes a connecting box (81). The connecting box (81) has a first cavity (82), a second cavity (83), and a third cavity (84) inside. The top of the inner wall of the first cavity (82) is fixedly connected to the fixed end of a first electric telescopic rod (85). The movable end of the first electric telescopic rod (85) extends to the second cavity (83) and is fixedly connected to a brush head (86). The bottom of the brush head (86) is fixedly connected to a push-out block (812). The part of the second cavity (83) located on one side of the brush head (86) is fixedly connected to a filter screen (87). The part of the second cavity (83) located on one side of the filter screen (87) has a connection port (88). The bottom of the inner wall of the second cavity (83) is connected to the third cavity (84) through the connection port (88). An elastic rubber block (89) is fixedly connected to one side of the inner wall of the connection port (88). The connecting box (81) has an inlet (810) and an outlet (811) on both sides.

6. A bidirectional on-board charger capable of AC-DC conversion according to claim 5, characterized in that: The bottom of the connecting box (81) is fixedly connected to the inner wall of the charger housing (1), the side of the connecting box (81) is fixedly connected to one side of the L-shaped partition (10), and the water inlet (810) is connected to the water inlet pipe (6).

7. A bidirectional on-board charger capable of AC-DC conversion according to claim 1, characterized in that: The heat dissipation mechanism (9) includes a charger body (91), a first heat dissipation shell (92) is sleeved and fixedly connected to the charger body (91), a first heat dissipation bracket (93) is fixedly connected to the side of the first heat dissipation shell (92), the first heat dissipation bracket (93) is provided in multiple sets and is evenly distributed on the top, bottom and sides of the first heat dissipation shell (92), a shock-absorbing pad (94) is fixedly connected to the part of the side of the first heat dissipation shell (92) between adjacent first heat dissipation brackets (93), a second heat dissipation shell (95) is fixedly connected to the side of the first heat dissipation shell (92) through the first heat dissipation bracket (93), a second heat dissipation bracket (96) is fixedly connected to the side of the second heat dissipation shell (95), a heat dissipation device (97) is fixedly connected to the side of the second heat dissipation shell (95) through a bracket, a third heat dissipation bracket (98) is fixedly connected to the top and bottom of the second heat dissipation bracket (96) through a bracket, the third heat dissipation bracket (98) is provided in multiple sets and is evenly distributed on the top and bottom of the second heat dissipation bracket (96), and a first heat sink (99) is fixedly connected to one side of the third heat dissipation bracket (98).

8. A bidirectional on-board charger capable of AC-DC conversion according to claim 7, characterized in that: The bottom of the second heat dissipation bracket (96) is fixedly connected to the bottom of the inner wall of the charger housing (1) through the third heat dissipation bracket (98). The side of the charger body (91) is fixedly connected to the L-shaped partition (10) through the bracket. The heat dissipation device (97) is fixedly connected to the inner wall of the charger housing (1) through the bracket.

9. A bidirectional on-board charger capable of AC-DC conversion according to claim 7, characterized in that: The heat dissipation device (97) includes a fourth heat dissipation bracket (971), and a second heat dissipation fin (972) is fixedly connected to the side of the fourth heat dissipation bracket (971). The second heat dissipation fin (972) is provided in multiple sets and is evenly distributed on the side of the fourth heat dissipation bracket (971). A heat dissipation groove (973) is opened at the bottom of the second heat dissipation fin (972). The heat dissipation groove (973) is provided in multiple sets and is evenly distributed at the bottom of the second heat dissipation fin (972). A fourth heat dissipation shell (974) is fixedly connected to the side of the multiple sets of second heat dissipation fins (972) away from the fourth heat dissipation bracket (971). The side of the fourth heat dissipation shell (974) away from the second heat dissipation fin (972) is fixedly connected to the inner wall of the charger shell (1).

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