12v 10a 4-way lead-acid or lithium battery charger

Abstract

The utility model relates to a 12V10A four -way lead -acid battery or lithium battery charger not only better heat dissipation effect, and good applicability, including body, bottom cover, left shell, right shell and charger control circuit board, the body and bottom cover are fixedly connected through many screws and form charger main part, the left side of charger main part is fixedly installed with left shell through many screws, the right side of charger main part is fixedly installed with right shell and is equipped with a plurality of waterproof connectors on the shell of right shell, be equipped with charger control circuit board in charger main part, the bottom cover is made of aluminium, the both sides of the lower end surface of bottom cover are equipped with an L shape mounting plate respectively and the upper end surface of horizontal plate in L shape mounting plate is equipped with a plurality of mounting through -hole, the lower end surface of bottom cover is equipped with a plurality of cooling fins and a plurality of cooling fins are located between two L shape mounting plates, and the lower end surface of horizontal plate is lower than the lower end surface of cooling fin. Advantage: 12V10A four -way lead -acid battery or lithium battery charger not only better heat dissipation effect, and good applicability.

Description

Technical Field

[0001] This utility model belongs to the field of battery charger manufacturing technology, specifically relating to a 12V10A four-channel lead-acid battery or lithium battery charger. Background Technology

[0002] The applicant's online patent CN 212258440 U, ​​entitled "Lithium Battery Charger," includes an input cable, an upper shell, a lower shell, and an output cable. The input cable is located at the left end of the upper shell, and the output cable is located at the right end of the upper shell. Both the right end of the input cable and the left end of the output cable are equipped with cable clips, which are wound and fixed to the outside of the input and output cables, respectively. Between the upper and lower shells are a pre-heat sink, a PCB board, and a post-heat sink. The pre-heat sink and post-heat sink are located below the PCB board, with the pre-heat sink positioned to the left of the post-heat sink. The pre-heat sink and post-heat sink are connected to the PCB board via latches and pin holes. The PCB board is detachably connected to the upper shell via a first self-tapping screw. The bottom of the lower shell has a second self-tapping screw that passes through the lower shell and connects to the upper shell. A faceplate is provided on the upper part of the upper shell and is adhered and fixed to the surface of the upper shell. A sealing gasket is provided on the upper part of the lower shell, and the sealing gasket is connected to a guide post on the lower shell. The two sides of the sealing gasket contact the upper and lower shells, respectively. The internal wires of the input and output lines pass through the upper shell and connect to the PCB board. The wire clip has an O-ring inside, and the upper shell has connectors at both ends; the wire clip connects to the connectors on the outside of the upper shell via the O-rings. Its shortcomings are: firstly, this type of lithium battery charger relies on front and rear heat sinks on the shell for heat dissipation, which is relatively ineffective; secondly, this type of lithium battery charger can only charge lithium batteries, resulting in relatively limited applicability. Utility Model Content

[0003] Design objective: To overcome the shortcomings of the prior art, this paper designs a 12V10A four-channel lead-acid or lithium battery charger that not only has better heat dissipation but also better applicability.

[0004] Design scheme: To achieve the above design objectives.

[0005] 1. The bottom cover is made of aluminum. An L-shaped mounting plate is provided on each side of the lower end face of the bottom cover. The upper end face of the horizontal plate in the L-shaped mounting plate has multiple through holes penetrating the upper and lower ends of the horizontal plate. Multiple heat sinks are provided on the lower end face of the bottom cover, and these heat sinks are located between two L-shaped mounting plates. The lower end face of the horizontal plate is lower than the lower end face of the heat sinks. This design is one of the technical features of this utility model. The purpose of this design is that the bottom cover, made of aluminum, with an L-shaped mounting plate on each side of the lower end face and multiple through holes penetrating the upper and lower ends of the horizontal plate in the L-shaped mounting plate, and multiple heat sinks located between two L-shaped mounting plates, and the lower end face of the horizontal plate being lower than the lower end face of the heat sinks, provides good heat dissipation for a 12V 10A four-way lead-acid or lithium battery charger. Furthermore, because the heat sinks are protected by the L-shaped mounting plates on both sides, they are less likely to be damaged during use.

[0006] 2. After cutting several heat sinks in the middle, a fan mounting cavity is formed on the lower end face of the bottom cover. A waterproof fan is fixedly installed on the lower end face of the bottom cover and is located inside the fan mounting cavity. The heat sinks are made of aluminum sheets. This is the second technical feature of this utility model. The purpose of this design is that after cutting several heat sinks in the middle, a fan mounting cavity is formed on the lower end face of the bottom cover. A waterproof fan is fixedly installed on the lower end face of the bottom cover and is located inside the fan mounting cavity. The heat sinks are made of aluminum sheets. The waterproof fan further improves the heat dissipation effect of the 12V10A four-channel lead-acid battery or lithium battery charger.

[0007] 3. The bottom cover has four mounting posts on its lower end face, located at the four corners of the fan mounting cavity. Each mounting post has a threaded hole on its lower end face. The fan shroud has a shroud lug on each of its four sides, with a through hole on the upper end face of the lug penetrating both the upper and lower ends of the fan shroud. The fan shroud is fixed to the four mounting posts with screws after the through hole aligns with the corresponding threaded hole. This design is the third technical feature of this utility model. The purpose of this design is that the bottom cover has four mounting posts on its lower end face, located at the four corners of the fan mounting cavity. Each mounting post has a threaded hole on its lower end face. The fan shroud has a shroud lug on each of its four sides, with a through hole on the upper end face of the lug penetrating both the upper and lower ends of the fan shroud. The fan shroud is fixed to the four mounting posts with screws after the through hole aligns with the corresponding threaded hole. The fan shroud provides protection for the fan.

[0008] 4. The charger control circuit board includes a high-frequency switching circuit, an output voltage and current feedback circuit, a high-frequency transformer control circuit, a voltage rectification and output circuit, a battery voltage detection circuit, an MCU power supply circuit, an output charging current detection circuit, an MCU control and switching circuit, an indicator light circuit, and an AC rectification circuit. Pin 14 of the MCU control and switching circuit is electrically connected to one end of resistor R99 in the current feedback circuit via a wire. Pin 9 of the MCU control and switching circuit is electrically connected to one end of resistor R88 in the output charging current detection circuit via a wire. Pin 10 of the MCU control and switching circuit is electrically connected to one end of resistor R60, one end of capacitor C2, and the negative terminal of diode DZ1 in the output charging current detection circuit via wires. Pin 11 of the MCU control and switching circuit is electrically connected to one end of resistor R89 ​​in the battery voltage detection circuit via a wire. Pin 12 of the MCU control and switching circuit is electrically connected to one end of resistor R2, one end of resistor R3, and one end of capacitor C2 in the battery voltage detection circuit via wires. Pin 13 is electrically connected to one end of resistor R85 via a wire, and the other end of resistor R85 is electrically connected to the base of transistor Q7 and one end of resistor R86 via wires. The collector of transistor Q7 is electrically connected to the positive terminal of diode D20 in the voltage rectification and output circuit and the corresponding terminal of the relay via wires. The emitter of transistor Q7 and the other end of resistor R86 are grounded via wires. Pin 3 in the MCU control and switching circuit is electrically connected to point PC1 in the indicator light circuit via a wire. The fourth technical feature of this utility model is that pin 4 in the switching circuit is electrically connected to point PC2 in the indicator light circuit via a wire; pin 5 in the MCU control and switching circuit is electrically connected to point PA0 in the indicator light circuit via a wire; pin 6 in the MCU control and switching circuit is electrically connected to point PA1 in the indicator light circuit via a wire; pin 7 in the MCU control and switching circuit is electrically connected to point PA2 in the indicator light circuit via a wire; and pin 8 in the MCU control and switching circuit is electrically connected to point PA3 in the indicator light circuit via a wire.The purpose of this design is that the charger control circuit board includes a high-frequency switching circuit, an output voltage and current feedback circuit, a high-frequency transformer control circuit, a voltage rectification and output circuit, a battery voltage detection circuit, an MCU power supply circuit, an output charging current detection circuit, an MCU control and switching circuit, an indicator light circuit, and an AC rectification circuit; pin 14 of the MCU control and switching circuit is electrically connected to one end of resistor R99 in the current feedback circuit via a wire, and pin 9 of the MCU control and switching circuit is electrically connected to one end of resistor R88 in the output charging current detection circuit via a wire. Pin 10 in the MCU control and switching circuit is electrically connected via wires to one end of resistor R60, one end of capacitor C2, and the negative terminal of diode DZ1 in the output charging current detection circuit. Pin 11 in the MCU control and switching circuit is electrically connected via wires to one end of resistor R89 ​​in the battery voltage detection circuit. Pin 12 in the MCU control and switching circuit is electrically connected via wires to one end of resistor R2, one end of resistor R3, and one end of capacitor C2 in the battery voltage detection circuit. Pin 13 in the MCU control and switching circuit is electrically connected via wires to one end of resistor R85. The current electrical connection is established, and the other end of resistor R85 is electrically connected to the base of transistor Q7 and one end of resistor R86 via wires. The collector of transistor Q7 is electrically connected to the positive terminal of diode D20 in the voltage rectification and output circuit and the corresponding terminal of the relay via wires. The emitter of transistor Q7 and the other end of resistor R86 are grounded via wires. Pin 3 in the MCU control and switching circuit is electrically connected to point PC1 in the indicator light circuit via a wire, and pin 4 in the MCU control and switching circuit is electrically connected to point PC2 in the indicator light circuit via a wire. Pin 5 in the MCU control and switching circuit is electrically connected to point PA0 in the indicator light circuit via a wire. Pin 6 in the MCU control and switching circuit is electrically connected to point PA1 in the indicator light circuit via a wire. Pin 7 in the MCU control and switching circuit is electrically connected to point PA2 in the indicator light circuit via a wire. Pin 8 in the MCU control and switching circuit is electrically connected to point PA3 in the indicator light circuit via a wire. This charger control circuit board enables a 12V 10A four-channel lead-acid or lithium battery charger to charge both lead-acid and lithium batteries, making it more versatile.

[0009] Technical Solution: A 12V 10A four-channel lead-acid or lithium battery charger includes a main body, a bottom cover, a left shell, a right shell, and a charger control circuit board. The main body and the bottom cover are fixedly connected by multiple screws to form the charger body. The left shell is fixedly installed on the left side of the charger body by multiple screws, and the right shell is fixedly installed on the right side of the charger body by multiple screws. The right shell has multiple waterproof connectors. The charger control circuit board is located inside the charger body. The bottom cover is made of aluminum. An L-shaped mounting plate is provided on each side of the lower end face of the bottom cover. The upper end face of the horizontal plate of the L-shaped mounting plate has multiple mounting through holes penetrating the upper and lower ends of the horizontal plate. The lower end face of the bottom cover has multiple heat sinks located between two L-shaped mounting plates. The lower end face of the horizontal plate is lower than the lower end face of the heat sinks.

[0010] Compared with the prior art, the 12V10A four-channel lead-acid battery or lithium battery charger of this invention not only has better heat dissipation, but also better applicability. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the exploded structure of a 12V10A four-channel lead-acid battery or lithium battery charger.

[0012] Figure 2 This is a schematic diagram of the bottom cover structure viewed from below.

[0013] Figure 3 This is a circuit diagram of the charger's control circuit board.

[0014] Figure 4 This is a circuit diagram (in color) of the charger's control circuit board. Detailed Implementation

[0015] Example 1: Refer to Appendix Figures 1-4A 12V 10A four-channel lead-acid or lithium battery charger includes a main body 100, a bottom cover 200, a left shell 300, a right shell 400, and a charger control circuit board 500. The main body 100 and the bottom cover 200 are fixedly connected by multiple screws to form the charger body. The left shell 300 is fixedly installed on the left side of the charger body by multiple screws, and the right shell 400 is fixedly installed on the right side of the charger body by multiple screws. The right shell 400 has multiple waterproof connectors 600 on its shell. The main body of the device contains a charger control circuit board 500. The bottom cover 200 is made of aluminum. An L-shaped mounting plate 201 is provided on each side of the lower end face of the bottom cover 200. The upper end face of the horizontal plate 202 in the L-shaped mounting plate 201 has multiple through holes 203 penetrating the upper and lower ends of the horizontal plate. Multiple heat sinks 204 are provided on the lower end face of the bottom cover 200, located between two L-shaped mounting plates 201. The lower end face of the horizontal plate 202 is lower than the lower end face of the heat sinks 204. After cutting several heat sinks 204 located in the middle, a fan mounting cavity 205 is formed on the lower end face of the bottom cover 200. A waterproof fan 700 is fixedly mounted on the lower end face of the bottom cover 200, and the waterproof fan 700 is located within the fan mounting cavity 205. The heat sinks 204 are aluminum sheets.

[0016] The bottom cover 200 has four mounting posts 206 on its lower end face, and the four mounting posts 206 are located at the four corners of the fan mounting cavity 205. The mounting posts 206 have threaded holes on their lower end faces. The fan cover 800 has a fan cover lug on each of its four sides, and the upper end face of the fan cover lug has a fan cover lug through hole that passes through the upper and lower end faces of the fan cover 800. The fan cover 800 is fixedly mounted on the four mounting posts 206 by screws after the fan cover lug through hole is aligned with the corresponding threaded hole.

[0017] The charger control circuit board 500 includes a high-frequency switching circuit 1, an output voltage and current feedback circuit 2, a high-frequency transformer control circuit 3, a voltage rectification and output circuit 4, a battery voltage detection circuit 5, an MCU power supply circuit 6, an output charging current detection circuit 7, an MCU control and switching circuit 8, an indicator light circuit 9, and an AC rectification circuit 10. Pin 14 of the MCU control and switching circuit 8 is electrically connected to one end of resistor R99 in the current feedback circuit 2 via a wire. Pin 9 of the MCU control and switching circuit 8 is electrically connected to one end of resistor R88 in the output charging current detection circuit 7 via a wire. Pin 10 of the MCU control and switching circuit 8 is electrically connected to one end of resistor R60, one end of capacitor C2, and the negative terminal of diode DZ1 in the output charging current detection circuit 7 via wires. The MCU control and switching circuit 8 has pin 11 connected to one end of resistor R89 ​​in battery voltage detection circuit 5 via a wire. Pin 12 of the MCU control and switching circuit 8 is connected to one end of resistor R2, one end of resistor R3, and one end of capacitor C2 in battery voltage detection circuit 5 via wires. Pin 13 of the MCU control and switching circuit 8 is connected to one end of resistor R85 via a wire, and the other end of resistor R85 is connected to the base of transistor Q7 and one end of resistor R86 via wires. The collector of transistor Q7 is connected to the positive terminal of diode D20 in voltage rectification and output circuit 4 and the corresponding terminal of relay via wires. The emitter of transistor Q7 and the other end of resistor R86 are grounded via wires.

[0018] Pin 3 of the MCU control and switch circuit 8 is electrically connected to point PC1 in the indicator light circuit 9 via a wire. Pin 4 of the MCU control and switch circuit 8 is electrically connected to point PC2 in the indicator light circuit 9 via a wire. Pin 5 of the MCU control and switch circuit 8 is electrically connected to point PA0 in the indicator light circuit 9 via a wire. Pin 6 of the MCU control and switch circuit 8 is electrically connected to point PA1 in the indicator light circuit 9 via a wire. Pin 7 of the MCU control and switch circuit 8 is electrically connected to point PA2 in the indicator light circuit 9 via a wire. Pin 8 of the MCU control and switch circuit 8 is electrically connected to point PA3 in the indicator light circuit 9 via a wire.

[0019] It should be understood that although the above embodiments provide a relatively detailed textual description of the design concept of this utility model, these textual descriptions are merely simple textual descriptions of the design concept of this utility model, and not limitations on the design concept of this utility model. Any combination, addition, or modification that does not exceed the design concept of this utility model shall fall within the protection scope of this utility model.

Claims

1. A 12V 10A four-channel lead-acid or lithium battery charger, comprising a body (100), a bottom cover (200), a left shell (300), a right shell (400), and a charger control circuit board (500), wherein the body (100) and the bottom cover (200) are fixedly connected by multiple screws to form the charger body, the left shell (300) is fixedly installed on the left side of the charger body by multiple screws, the right shell (400) is fixedly installed on the right side of the charger body by multiple screws, and the right shell (400) is provided with multiple waterproof connectors (600) on its shell, and the charger control circuit board (500) is provided inside the charger body, characterized in that: The bottom cover (200) is made of aluminum. An L-shaped mounting plate (201) is provided on each side of the lower end face of the bottom cover (200). The upper end face of the horizontal plate (202) in the L-shaped mounting plate (201) has multiple through holes (203) penetrating both ends of the horizontal plate. The lower end face of the bottom cover (200) has multiple heat sinks (204) located between two L-shaped mounting plates (201). The lower end face of the horizontal plate (202) is lower than the lower end face of the heat sinks (204). The charger control circuit board (500) includes a high-frequency... The circuit includes a switching circuit (1), an output voltage and current feedback circuit (2), a high-frequency transformer control circuit (3), a voltage rectification and output circuit (4), a battery voltage detection circuit (5), an MCU power supply circuit (6), an output charging current detection circuit (7), an MCU control and switching circuit (8), an indicator light circuit (9), and an AC rectification circuit (10). Pin 14 of the MCU control and switching circuit (8) is electrically connected to one end of resistor R99 in the current feedback circuit (2) via a wire. Pin 9 of the MCU control and switching circuit (8) is electrically connected to the output voltage and current feedback circuit (2) via a wire. One end of resistor R88 in the charging current detection circuit (7) is electrically connected. Pin 10 of the MCU control and switching circuit (8) is electrically connected to one end of resistor R60, one end of capacitor C2, and the negative terminal of diode DZ1 in the output charging current detection circuit (7) via wires. Pin 11 of the MCU control and switching circuit (8) is electrically connected to one end of resistor R89 ​​in the battery voltage detection circuit (5) via wires. Pin 12 of the MCU control and switching circuit (8) is electrically connected to one end of resistor R89 ​​in the battery voltage detection circuit (5) via wires. One end of resistor R2, one end of resistor R3, and one end of capacitor C2 are electrically connected. Pin 13 in the MCU control and switching circuit (8) is electrically connected to one end of resistor R85 through a wire, and the other end of resistor R85 is electrically connected to the base of transistor Q7 and one end of resistor R86 through a wire. The collector of transistor Q7 is electrically connected to the positive terminal of diode D20 in voltage rectification and output circuit (4) and the corresponding terminal of relay through a wire. The emitter of transistor Q7 and the other end of resistor R86 are grounded through a wire.

2. The 12V 10A four-channel lead-acid battery or lithium battery charger according to claim 1, characterized in that: After cutting several heat sinks (204) located in the middle, a fan mounting cavity (205) is formed on the lower end face of the bottom cover (200). A waterproof fan (700) is fixedly installed on the lower end face of the bottom cover (200) and the waterproof fan (700) is located in the fan mounting cavity (205). The heat sink (204) is an aluminum sheet.

3. The 12V 10A four-channel lead-acid battery or lithium battery charger according to claim 2, characterized in that: The bottom cover (200) has four mounting posts (206) on its lower end face, and the four mounting posts (206) are located at the four corners of the fan mounting cavity (205). The mounting posts (206) have threaded holes on their lower end faces. The fan shroud (800) has a shroud lug on each of its four sides, and the upper end face of the shroud lug has a shroud lug through hole that passes through the upper and lower end faces of the fan shroud (800). The fan shroud (800) is fixedly mounted on the four mounting posts (206) by screws after the shroud lug through hole and the corresponding threaded hole are aligned.

4. The 12V 10A four-channel lead-acid battery or lithium battery charger according to claim 1, characterized in that: Pin 3 of the MCU control and switch circuit (8) is electrically connected to point PC1 in the indicator light circuit (9) via a wire. Pin 4 of the MCU control and switch circuit (8) is electrically connected to point PC2 in the indicator light circuit (9) via a wire. Pin 5 of the MCU control and switch circuit (8) is electrically connected to point PA0 in the indicator light circuit (9) via a wire. Pin 6 of the MCU control and switch circuit (8) is electrically connected to point PA1 in the indicator light circuit (9) via a wire. Pin 7 of the MCU control and switch circuit (8) is electrically connected to point PA2 in the indicator light circuit (9) via a wire. Pin 8 of the MCU control and switch circuit (8) is electrically connected to point PA3 in the indicator light circuit (9) via a wire.

Images