A high-power lithium battery charger

Abstract

The present invention discloses a high-power lithium battery charger, comprising a bottom box and a protective cover. A charging chip is fixedly connected to the interior of the bottom box, a cooling box is fixedly connected to the top of the charging chip, a water inlet pipe and a water outlet pipe are connected to one side of the cooling box, a driving plate is fixedly connected to the interior of the cooling box, a brushless motor is electrically connected to the bottom of the driving plate, a reflux box is fixedly connected to the bottom of the brushless motor, four lower connecting columns are fixedly connected to the interior of the bottom box, and a fixing bolt is fixedly connected to the bottom of the bottom box. By providing a cooling box and a water-cooled radiator, the heat dissipation performance of the charger can be increased. The cooling box is directly in contact with the charging chip, and the water-cooled radiator is used to dissipate the heat conducted by the charging chip, thereby promoting sufficient heat dissipation of the charging chip. This solves the problem of poor heat dissipation performance of traditional fan-type heat dissipation when encountering a high-power lithium battery charger.

Description

Technical Field

[0001] The present invention belongs to the technical field of lithium battery chargers, and in particular relates to a high-power lithium battery charger. Background Art

[0002] A lithium battery charger is a charger specifically used to charge lithium-ion batteries. Lithium-ion batteries have high requirements for chargers and require protection circuits, so lithium battery chargers usually have high control precision and can charge lithium-ion batteries with constant current and constant voltage.

[0003] However, existing lithium battery chargers have the following disadvantages:

[0004] 1. The heat dissipation is not good enough. The traditional lithium battery charger uses a brushless motor fan for heat dissipation. This radiator can only directly dissipate heat inside the charger, but not directly dissipate heat for the chip. As a result, when encountering a high-power lithium battery charger, its heat dissipation performance will be reduced, and the chip cannot be completely cooled;

[0005] 2. Maintenance is not convenient enough and the fixation is not stable enough. Traditional lithium battery chargers are fixed with screws. So when repairing the inside of the charger, you need to use a screwdriver to open it, which makes maintenance more troublesome. Moreover, since it is fixed with screws, when the charger is used for a long time, the screws will be stripped, so the charger will be unstable. Long-term collision will cause the internal chip to be damaged. At the same time, when the screws are eroded by water, they will rust, which will cause the charger to be unable to be opened and affect maintenance. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a high-power lithium battery charger, which solves the problems of poor heat dissipation and inconvenient detection of traditional lithium battery chargers.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: A high-power lithium battery charger comprises a bottom box and a protective cover, wherein a charging chip is fixedly connected to the interior of the bottom box, a cooling box is fixedly connected to the top of the charging chip, a water inlet pipe and a water outlet pipe are connected to one side of the cooling box, a driving board is fixedly connected to the interior of the cooling box, a brushless motor is electrically connected to the bottom of the driving board, a reflux box is fixedly connected to the bottom of the brushless motor, four lower connecting columns are fixedly connected to the interior of the bottom box, a fixing bolt is fixedly connected to the bottom of the bottom box, a connecting bolt is plugged into the bottom of the fixing bolt, one end of the connecting bolt is fixedly connected to a pull buckle, an unlocking bolt is movably connected to the interior of one end of the connecting bolt, and spring cards are movably connected to both sides of the other end of the connecting bolt, a twist bolt is threadedly connected to the outside of the connecting bolt, a spring is movably connected to the interior of the connecting bolt, a fixing card is fixedly connected to the interior of the bottom box, one side of the fixing card is movably connected to a water-cooled radiator, one side of the water-cooled radiator is fixedly connected to a cooling fan, and a card block is fixedly connected to the top of the interior of the bottom box.

[0008] By adopting the above technical solution, the advantage is that the heat dissipation performance of the charger can be increased by adding a cooling box and a water-cooled radiator. The cooling box is directly in contact with the charging chip, and the water-cooled radiator is used to dissipate the heat conducted by the charging chip, thereby enabling the charging chip to be fully cooled. This solves the problem of poor heat dissipation performance of traditional fan-type heat dissipation when encountering high-power lithium battery chargers.

[0009] Preferably, one end of the water inlet pipe and the water outlet pipe away from the cooling box is connected to one side of the water-cooled radiator.

[0010] By adopting the above technical solution, the advantage is that the water inside the cooling box can be circulated, thereby ensuring that the cooling box is always kept at a low temperature, thereby prompting the cooling box to cool the charging chip.

[0011] Preferably, a copper heat sink is fixedly connected to the bottom of the cooling box, and a sealing ring is fixedly connected to the top of the copper heat sink.

[0012] By adopting the above technical solution, the advantage is that the copper heat sink can be used to conduct the water temperature to the charging chip, thereby causing the charging chip to be cooled. At the same time, a sealing ring is provided on one side of the copper heat sink to prevent the water inside the cooling box from flowing onto the charging chip.

[0013] Preferably, the interior of the water-cooled radiator is fixedly connected with heat dissipation fins, and the water inlet pipe passes through the interior of the heat dissipation fins in an up-and-down staggered manner and is connected to one end of the water outlet pipe.

[0014] By adopting the above technical solution, the advantage is that when the water at the bottom of the cooling box is subjected to heat conduction from the charging chip, the water inlet pipe will bring the warm water into the water-cooled radiator, and then through the cooperation of the fins and the cooling fan, the warm water carried by the water inlet pipe will be cooled, thereby prompting the cooled water to flow into the cold zone box again through the water outlet pipe for cooling, thereby achieving the effect of cold circulation.

[0015] Preferably, an upper connecting column is fixedly connected to the inside of the protective cover, and holes are opened on both sides of the upper connecting column. The size of the holes on both sides of the upper connecting column is the same as the size of the spring card, and the position of the upper connecting column corresponds to the position of the lower connecting column.

[0016] The above technical solution has the advantage that the upper connecting column and the lower connecting column can be used to insert the connecting bolt into the interior of the upper connecting column, and the hole provided in the upper connecting column can be used to insert the spring card into the hole, thereby connecting the protective cover to the bottom box, thereby solving the maintenance trouble of traditional screw connection.

[0017] Preferably, one end of the connecting bolt is provided with a thread, and the specification size of the threaded end of the connecting bolt and the pull buckle is smaller than the specification size of the fixing bolt.

[0018] By adopting the above technical solution, the advantage is that the stability of the protective cover is increased. When the connecting bolt connects the protective cover to the bottom box, rotating the twist bolt can cause the connecting bolt to be fixed inside the bottom box, thereby avoiding the problem of the connecting bolt slipping. At the same time, the stability of the protective cover is increased, and the problem of the protective cover shaking is avoided.

[0019] Preferably, one end of the unlocking bolt passes through the interior of the connecting bolt and is connected to one side of the spring, rebound holes are provided on both sides of the connecting bolt, one end of the spring card is fixedly connected to a connecting block, and the end of the connecting block away from the card block is connected to one side of the unlocking bolt.

[0020] The above technical solution has the advantage of facilitating unlocking of the connecting bolt. When unlocking, one only needs to press the unlocking bolt to cause the connecting block to drive the spring card to retract into the rebound hole, and then the protective cover can be easily opened, thereby facilitating the inspection of the interior of the charger.

[0021] Preferably, a card slot is provided inside the protective cover, and the size of the card block is adapted to the size of the card slot.

[0022] The above technical solution has the advantage that the stability of the protective cover can be increased by limiting the position by providing the clamping block, thereby avoiding the problem of shaking of the protective cover.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The heat dissipation performance of the charger can be increased by setting a cooling box and a water-cooled radiator. The cooling box is directly in contact with the charging chip, and the water-cooled radiator is used to dissipate the heat conducted by the charging chip, thereby enabling the charging chip to be fully cooled. This solves the problem of poor heat dissipation performance of traditional fan-type cooling when encountering high-power lithium battery chargers. The water inlet and outlet pipes can be used to circulate the water inside the cooling box, thereby ensuring that the cooling box is always kept at a low temperature, thereby enabling the cooling box to cool the charging chip. The copper heat dissipation The copper heat sink can be used to conduct the water temperature to the charging chip, thereby cooling the charging chip. At the same time, a sealing ring is provided on one side of the copper heat sink to prevent the water inside the cooling box from flowing onto the charging chip. Through the provided heat dissipation fins and the heat dissipation fan, when the water at the bottom of the cooling box is subjected to the heat conduction of the charging chip, the water inlet pipe will bring the warm water into the water-cooled radiator, and then through the cooperation of the fins and the heat dissipation fan, the warm water carried by the water inlet pipe will be cooled, thereby causing the cooled water to flow into the cold zone box again through the water outlet pipe for cooling, thereby achieving the effect of cold circulation.

[0025] 2. The upper and lower connecting posts are provided, so that the connecting bolt can be inserted into the interior of the upper connecting post, and then the spring card can be inserted into the hole provided in the upper connecting post, thereby connecting the protective cover to the bottom box, thereby solving the trouble of maintenance during traditional screw connection. The twist bolt is provided, and the stability of the protective cover is increased. When the connecting bolt connects the protective cover to the bottom box, rotating the twist bolt can cause the connecting bolt to be fixed to the inside of the bottom box, thereby avoiding the problem of the connecting bolt slipping, and at the same time increasing the stability of the protective cover and avoiding the problem of shaking of the protective cover. The unlocking bolt is provided to facilitate unlocking of the connecting bolt. When unlocking, you only need to press the unlocking bolt to cause the connecting block to drive the spring card to retract to the rebound hole, and you can easily open the protective cover, thereby facilitating the inspection of the inside of the charger. The card block is provided, and the stability of the protective cover can be increased by limiting, thereby avoiding the problem of shaking of the protective cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic diagram of a top cross-sectional structure of the present invention;

[0028] Figure 3 Schematic diagram of the water cooling structure of the present invention;

[0029] Figure 4 For the present invention Figure 3 Schematic diagram of the structure in front section;

[0030] Figure 5 This is a left-side structural schematic diagram of the present invention;

[0031] Figure 6 For the present invention Figure 5 Schematic diagram of the structure of the cross section of part A.

[0032] In the figure: 1. Base box; 2. Protective cover; 3. Charging chip; 4. Lower connecting column; 5. Cooling box; 6. Water inlet pipe; 7. Water outlet pipe; 8. Water cooling radiator; 9. Fixing card; 10. Cooling fan; 11. Fixing bolt; 12. Connecting bolt; 13. Rebound hole; 14. Spring card; 15. Twist bolt; 16. Pull buckle; 17. Spring; 18. Connecting block; 19. Drive board; 20. Brushless motor; 21. Reflow box; 22. Sealing ring; 23. Copper heat sink; 24. Card block; 25. Unlocking bolt. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] like Figures 1-6 As shown, a high-power lithium battery charger includes a bottom box 1 and a protective cover 2. A charging chip 3 is fixedly connected to the inside of the bottom box 1. The top of the charging chip 3 is fixedly connected to a cooling box 5. One side of the cooling box 5 is connected to a water inlet pipe 6 and a water outlet pipe 7. A driving plate 19 is fixedly connected to the inside of the cooling box 5. The bottom of the driving plate 19 is electrically connected to a brushless motor 20. The bottom of the brushless motor 20 is fixedly connected to a reflux box 21. Four lower connecting columns 4 are fixedly connected to the inside of the bottom box 1. The bottom of the bottom box 1 is fixedly connected to a fixing bolt 11. The fixing bolt 11 A connecting bolt 12 is inserted into the bottom, one end of the connecting bolt 12 is fixedly connected to a pull buckle 16, an unlocking bolt 25 is movably connected to the inside of one end of the connecting bolt 12, and spring cards 14 are movably connected to both sides of the other end of the connecting bolt 12. The external thread of the connecting bolt 12 is connected to a twist bolt 15, and the internal movably connected to the connecting bolt 12 is a spring 17. The inside of the bottom box 1 is fixedly connected to a fixing card 9, one side of the fixing card 9 is movably connected to a water-cooled radiator 8, one side of the water-cooled radiator 8 is fixedly connected to a cooling fan 10, and the top inside the bottom box 1 is fixedly connected to a card block 24.

[0035] The working principle of the above technical solution is as follows:

[0036] First, during installation, the protective cover 2 is stuck on the top of the bottom box 1 through the action of the blocking block 24, and then the connecting bolt 12 is passed through the inside of the fixing bolt 11, prompting the connecting bolt 12 to connect the upper connecting column with the lower connecting column 4. At this time, the spring card 14 will automatically be stuck in the hole on one side of the upper connecting column. At this time, the connecting bolt 12 will not fall off the inside of the bottom box 1, and at the same time, the bottom box 1 and the protective cover 2 are fixed together. Then, in order to ensure the stability of the protective cover 2, the twist bolt 15 is rotated again to prompt the twist bolt 15 to approach the bottom of the bottom box 1. At this time, the protective cover 2 will be stabilized on the top of the protective cover 2 through the action of the twist bolt 15. Then, when maintenance is needed, the twist bolt 15 is rotated again to prompt the twist bolt 15 to move away from the bottom of the bottom box 1, and at the same time, the unlocking bolt 25 is pressed to prompt the connecting block 18 to drive the spring card 14 retracts to the inside of the rebound hole 13. At this time, the connecting bolt 12 is pulled out of the inside of the bottom box 1, and the protective cover 2 can be easily opened, which facilitates the inspection of the inside of the charger. Finally, when the charger is running, the copper heat sink 23 at the bottom of the cooling box 5 will cool the charging chip 3. At the same time, the heat absorbed by the copper heat sink 23 will be transmitted to the water inside the return box 21, and then driven by the brushless motor 20 to cause the water to flow from the water inlet pipe 6 to the inside of the water-cooled radiator 8. At this time, through the action of the cooling fins and the cooling fan 10, the warm water in the water inlet pipe 6 will be dissipated, thereby obtaining cooled water. At the same time, the cooled water will flow into the cooling box 5 again through the outlet pipe 7 to cool the charging chip 3 again, thereby achieving the effect of cold circulation.

[0037] The above technical solution has the advantage that the heat dissipation performance of the charger can be increased by adding the cooling box 5 and the water-cooled radiator 8. The cooling box 5 is directly in contact with the charging chip 3, and the water-cooled radiator 8 is used to dissipate the heat conducted by the charging chip 3, thereby enabling the charging chip 3 to be fully cooled. This solves the problem of poor heat dissipation performance of traditional fan-type heat dissipation when encountering a high-power lithium battery charger.

[0038] In the embodiment, the following are explained in conjunction with the illustrations: Figure 1-6 As shown, one end of the water inlet pipe 6 and the water outlet pipe 7 away from the cooling box 5 is connected to one side of the water-cooled radiator 8.

[0039] By providing the water inlet pipe 6 and the water outlet pipe 7 , the water inside the cooling box 5 can be circulated, thereby ensuring that the cooling box 5 is always kept at a low temperature, thereby prompting the cooling box 5 to cool the charging chip 3 .

[0040] In the embodiment, the following are explained in conjunction with the illustrations: Figure 1-6 As shown, a copper heat sink 23 is fixedly connected to the bottom of the cooling box 5 , and a sealing ring 22 is fixedly connected to the top of the copper heat sink 23 .

[0041] By setting up the copper heat sink 23 and the sealing ring 22, the copper heat sink 23 can be used to conduct the water temperature to the charging chip, thereby causing the charging chip 3 to be cooled. At the same time, a sealing ring 22 is provided on one side of the copper heat sink 23 to prevent the water inside the cooling box 5 from flowing onto the charging chip 3.

[0042] In the embodiment, the following are explained in conjunction with the illustrations: Figure 1-6 As shown, the interior of the water-cooled radiator 8 is fixedly connected with heat dissipation fins, and the water inlet pipe 6 passes through the interior of the heat dissipation fins in an up-and-down staggered manner and is connected to one end of the water outlet pipe 7.

[0043] Through the provided heat dissipation fins and heat dissipation fan 10, when the water at the bottom of the cooling box 5 is subjected to heat conduction by the charging chip 3, the water inlet pipe 6 will bring the warm water into the water-cooled radiator 8, and then through the cooperation of the fins and the heat dissipation fan 10, the warm water carried by the water inlet pipe 6 will be cooled, thereby prompting the cooled water to flow into the cold zone box again through the water outlet pipe 7 for cooling, thereby achieving the effect of cold circulation.

[0044] In the embodiment, the following are explained in conjunction with the illustrations: Figure 1-6 As shown, the protective cover 2 is fixedly connected to an upper connecting column, with holes on both sides of the upper connecting column. The size of the holes on both sides of the upper connecting column is the same as the size of the spring card 14, and the position of the upper connecting column corresponds to the position of the lower connecting column 4.

[0045] By setting the upper connecting column and the lower connecting column 4, the connecting bolt 12 can be inserted into the interior of the upper connecting column, and then the spring card 14 can be inserted into the hole set in the upper connecting column, thereby prompting the protective cover 2 to be connected to the bottom box 1, thereby solving the trouble of maintenance during traditional screw connection.

[0046] In the embodiment, the following are explained in conjunction with the illustrations: Figure 1-6 As shown, one end of the connecting bolt 12 is provided with a thread, and the specification size of the threaded end of the connecting bolt 12 and the buckle 16 is smaller than the specification size of the fixing bolt 11 .

[0047] By setting the twist bolt 15, the stability of the protective cover 2 is increased. When the connecting bolt 12 connects the protective cover 2 to the bottom box 1, rotating the twist bolt 15 can cause the connecting bolt 12 to be fixed inside the bottom box 1, thereby avoiding the problem of the connecting bolt 12 slipping off, and at the same time increasing the stability of the protective cover 2, avoiding the problem of the protective cover 2 shaking.

[0048] In the embodiment, the following are explained in conjunction with the illustrations: Figure 1-6As shown, one end of the unlocking bolt 25 passes through the interior of the connecting bolt 12 and is connected to one side of the spring 17. Rebound holes 13 are provided on both sides of the connecting bolt 12. One end of the spring clip 14 is fixedly connected to the connecting block 18. The end of the connecting block 18 away from the card block 24 is connected to one side of the unlocking bolt 25.

[0049] The unlocking bolt 25 is provided to facilitate unlocking of the connecting bolt 12. When unlocking, one only needs to press the unlocking bolt 25 to cause the connecting block 18 to drive the spring card 14 to retract into the rebound hole 13, and then the protective cover 2 can be easily opened, thereby facilitating the inspection of the interior of the charger.

[0050] In the embodiment, the following are explained in conjunction with the illustrations: Figure 1-6 As shown, a card slot is provided inside the protective cover 2 , and the size of the card block 24 matches the size of the card slot.

[0051] By providing the clamping block 24 , the stability of the protective cover 2 can be increased by limiting the position, thereby preventing the protective cover 2 from shaking.

[0052] The working principle and usage process of the present invention are as follows: first, during installation, the protective cover 2 is stuck on the top of the bottom box 1 through the action of the card block 24, and then the connecting bolt 12 is passed through the inside of the fixing bolt 11, prompting the connecting bolt 12 to connect the upper connecting column with the lower connecting column 4. At this time, the spring card 14 will automatically be stuck in the hole on one side of the upper connecting column. At this time, the connecting bolt 12 will not fall off the inside of the bottom box 1, and at the same time, the bottom box 1 and the protective cover 2 are fixed together. Then, in order to ensure the stability of the protective cover 2, the twist bolt 15 is rotated again to prompt the twist bolt 15 to approach the bottom of the bottom box 1. At this time, the protective cover 2 will be stabilized on the top of the protective cover 2 through the action of the twist bolt 15. Then, when maintenance is needed, the twist bolt 15 is rotated again to prompt the twist bolt 15 to move away from the bottom of the bottom box 1, and the unlocking bolt 25 is pressed to prompt the connection Block 18 drives the spring card 14 to retract into the inside of the rebound hole 13. At this time, the connecting bolt 12 is pulled out of the inside of the bottom box 1, and the protective cover 2 can be easily opened, which facilitates the inspection of the inside of the charger. Finally, when the charger is running, the copper heat sink 23 at the bottom of the cooling box 5 will cool the charging chip 3. At the same time, the heat absorbed by the copper heat sink 23 will be transmitted to the water inside the return box 21, and then driven by the brushless motor 20 to cause water to flow from the water inlet pipe 6 to the inside of the water-cooled radiator 8. At this time, through the action of the cooling fins and the cooling fan 10, the warm water in the water inlet pipe 6 will be dissipated, thereby obtaining cooled water. At the same time, the cooled water will flow into the cooling box 5 again through the outlet pipe 7 to cool the charging chip 3 again, thereby achieving the effect of cold circulation.

[0053] While 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 alterations may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-power lithium battery charger, comprising a bottom box (1) and a protective cover (2), characterized in that: The bottom box (1) is fixedly connected to a charging chip (3), the top of the charging chip (3) is fixedly connected to a cooling box (5), one side of the cooling box (5) is connected to a water inlet pipe (6) and a water outlet pipe (7), the inside of the cooling box (5) is fixedly connected to a driving plate (19), the bottom of the driving plate (19) is electrically connected to a brushless motor (20), the bottom of the brushless motor (20) is fixedly connected to a reflux box (21), the inside of the bottom box (1) is fixedly connected to four lower connecting columns (4), the bottom of the bottom box (1) is fixedly connected to a fixing bolt (11), the bottom of the fixing bolt (11) is plugged with a connecting bolt (12), one end of the connecting bolt (12) is fixedly connected to a draw buckle (16), one end of the connecting bolt (12) is internally movably connected to an unlocking bolt (25), the two sides of the other end of the connecting bolt (12) are movably connected to spring clips (14), and the external thread of the connecting bolt (12) is connected to a twist bolt (15). The connecting bolt (12) is movably connected to a spring (17), the bottom box (1) is fixedly connected to a fixing card (9), one side of the fixing card (9) is movably connected to a water-cooling radiator (8), one side of the water-cooling radiator (8) is fixedly connected to a cooling fan (10), and the top of the bottom box (1) is fixedly connected to a clamping block (24); the protective cover (2) is fixedly connected to an upper connecting column, two sides of the upper connecting column are provided with holes, and the size of the holes on both sides of the upper connecting column is the same as the size of the spring card (14), and the position of the upper connecting column corresponds to the position of the lower connecting column (4); one end of the unlocking bolt (25) passes through the interior of the connecting bolt (12) and is connected to one side of the spring (17), and two sides of the connecting bolt (12) are provided with rebound holes (13), one end of the spring card (14) is fixedly connected to a connecting block (18), and the end of the connecting block (18) away from the clamping block (24) is connected to one side of the unlocking bolt (25).

2. A high-power lithium battery charger according to claim 1, characterized in that: One end of the water inlet pipe (6) and the water outlet pipe (7) away from the cooling box (5) is connected to one side of the water-cooled radiator (8).

3. A high-power lithium battery charger according to claim 1, characterized in that: The bottom of the cooling box (5) is fixedly connected to a copper heat sink (23), and the top of the copper heat sink (23) is fixedly connected to a sealing ring (22).

4. A high-power lithium battery charger according to claim 1, characterized in that: The interior of the water-cooled radiator (8) is fixedly connected to a heat dissipation fin, and the water inlet pipe (6) passes through the interior of the heat dissipation fin in an up-and-down staggered manner and is connected to one end of the water outlet pipe (7).

5. A high-power lithium battery charger according to claim 1, characterized in that: A card slot is provided inside the protective cover (2), and the size of the card block (24) is adapted to the size of the card slot.

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