Safe lithium battery with built-in PCB protection structure

Abstract

The utility model relates to the technical field of lithium ion batteries, in particular to a safe lithium battery with a built-in PCB (Printed Circuit Board) protection structure. The utility model provides a safety type lithium battery with a built-in PCB (printed circuit board) protection structure, which comprises a shell, a battery, a connecting wire, a PCB and pins, the battery is mounted in the shell, the connecting wire is connected onto the battery, the PCB is mounted in the shell, the connecting wire is connected with the PCB, the pins are connected onto the PCB in a bilateral symmetry manner, and the pins are connected onto the PCB in a bilateral symmetry manner. The water tank is installed in the shell, the water pump is installed in the water tank, the cooling pipe is connected to a water outlet of the water pump, the other end of the cooling pipe is connected with the water tank, the cooling pipe is in contact fit with the PCB, and the heat conducting plate is installed in the shell. And through the arrangement of the water tank, the water pump, the cooling pipe and the heat conducting plate, effective heat dissipation of the PCB in the lithium battery is realized, and the stability and safety of the battery under long-time high-load operation are ensured.

Description

Technical Field

[0001] This utility model relates to the field of lithium-ion battery technology, and in particular to a safe lithium battery with a built-in PCB board protective structure. Background Technology

[0002] A lithium-ion battery is a rechargeable battery that uses lithium-ion intercalation compounds as the positive and negative electrode materials. It utilizes the movement of lithium ions between the positive and negative electrodes to achieve the charging and discharging process. Due to its advantages such as high energy density, long cycle life, lightweight, and no memory effect, lithium-ion batteries have been widely used in modern electronic devices and electric vehicles.

[0003] During the long-term use of lithium batteries, the PCB circuit board will generate a certain amount of heat due to Joule heat generated by current passing through resistors, power conversion losses, continuous operation of protection circuits, and the influence of external ambient temperature. However, many existing lithium battery structures lack effective heat dissipation designs, which makes it easy for heat to accumulate on the circuit board. The continuous high temperature environment will accelerate the aging process of electronic components, reduce their stability and service life. For example, electrolytic capacitors are prone to electrolyte drying or bulging and failure under high temperature conditions. Semiconductor devices such as MOSFETs may also experience performance degradation or even damage due to overheating, thereby affecting the safety and reliability of the entire battery system.

[0004] To address the existing problems, there is a need for a safe lithium battery with a built-in PCB board protective structure that has heat dissipation function. Utility Model Content

[0005] To overcome the shortcomings of poor heat dissipation, this utility model provides a safe lithium battery with a built-in PCB board protection structure.

[0006] The technical solution of this utility model is as follows: A safe lithium battery with a built-in PCB board protective structure includes a shell, a battery, connecting wires, a PCB board, and pins. The battery is installed inside the shell, and the connecting wires are connected to the battery. The PCB board is installed inside the shell, and the connecting wires are connected to the PCB board. Pins are symmetrically connected on the left and right sides of the PCB board. It also includes a water tank, a water pump, a cooling pipe, and a heat-conducting plate. The water tank is installed inside the shell, and the water pump is installed inside the water tank. The cooling pipe is connected to the outlet of the water pump, and the other end of the cooling pipe is connected to the water tank. The cooling pipe is in contact with the PCB board. The heat-conducting plate is installed inside the shell and is in contact with the PCB board.

[0007] In addition, it is particularly preferred that the housing also includes a connecting frame, a lead screw, and a limiting pad. The connecting frame is connected to the front side of the housing, and the lead screw is symmetrically threaded inside the connecting frame. A limiting pad is connected between the top ends of the two lead screws, and the limiting pad contacts and engages with the pin.

[0008] In addition, it is particularly preferred that the housing also includes a sealing gasket, with sealing gaskets symmetrically connected to the front and back of the housing.

[0009] Furthermore, it is particularly preferred that a nano-coating is included, with the front side of the PCB circuit board having a nano-coating.

[0010] In addition, it is particularly preferred that the pins also include wear-resistant sleeves, with wear-resistant sleeves fitted on both pins.

[0011] Furthermore, it is particularly preferred that an electromagnetic shielding layer is included, with the electromagnetic shielding layer located inside the outer casing.

[0012] Furthermore, it is particularly preferred that the heat-conducting plate has a groove that fits into the cooling pipe.

[0013] Furthermore, it is particularly preferred that the limiting pad has a groove that matches the shape of the pin.

[0014] The beneficial effects of this invention are as follows: By configuring a water tank, water pump, cooling pipe, and heat-conducting plate, effective heat dissipation is achieved for the internal PCB circuit board of the lithium battery, ensuring the stability and safety of the battery under long-term high-load operation. Specifically, the water pump pumps the coolant from the water tank into the cooling pipe. The coolant flows through the area in close contact with the PCB circuit board and the heat-conducting plate, quickly absorbing and carrying away the generated heat, forming a highly efficient circulating cooling system. This system can not only dissipate heat evenly and avoid local overheating, but also control the temperature in real time, keeping the PCB circuit board and its key components within the optimal operating temperature range. This not only significantly extends the service life of electronic components, but also greatly improves the safety and reliability of the battery, providing users with a more stable and durable user experience. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a cross-sectional view of the battery of this utility model.

[0017] Figure 3 This is a cross-sectional view of the water tank of this utility model.

[0018] Figure 4 This is an exploded view of the heat-conducting plate and PCB circuit board of this utility model.

[0019] Figure 5 This is a three-dimensional structural diagram of the connecting frame, lead screw, and limiting pad of this utility model.

[0020] The above-mentioned figures include the following reference numerals: 1. Outer shell, 2. Battery, 3. Connecting wire, 4. PCB circuit board, 5. Pin, 6. Water tank, 7. Water pump, 8. Cooling pipe, 9. Heat conduction plate, 10. Connecting frame, 11. Lead screw, 12. Limiting pad, 13. Sealing gasket, 14. Nano coating, 15. Wear-resistant sleeve, 16. Electromagnetic shielding layer. Detailed Implementation

[0021] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0022] Example: A safety lithium battery with a built-in PCB board protection structure, such as Figures 1-5As shown, the device includes a casing 1, a battery 2, a connecting wire 3, a PCB circuit board 4, pins 5, a water tank 6, a water pump 7, a cooling pipe 8, a heat-conducting plate 9, a connecting frame 10, a lead screw 11, a limiting pad 12, a sealing gasket 13, a nano-coating 14, a wear-resistant sleeve 15, and an electromagnetic shielding layer 16. The battery 2 is installed inside the casing 1, and the connecting wire 3 is connected to the battery 2. The PCB circuit board 4 is installed inside the casing 1, and the connecting wire 3 is connected to the PCB circuit board 4. Pins 5 are symmetrically connected to the left and right sides of the PCB circuit board 4. The water tank 6 is installed inside the casing 1 to store coolant. The water tank 6 contains... A water pump 7 has a cooling pipe 8 connected to its outlet. The other end of the cooling pipe 8 is connected to a water tank 6. The cooling pipe 8 is in contact with the PCB circuit board 4 and is positioned near the PCB circuit board 4. The coolant circulates within the cooling pipe, efficiently absorbing and carrying away the heat generated by the circuit board during operation, achieving active heat dissipation. A heat-conducting plate 9 is installed inside the outer casing 1. The heat-conducting plate 9 is in contact with the PCB circuit board 4 and is in close contact with the back of the PCB circuit board 4, quickly transferring the heat from the circuit board to the cooling pipe area, improving heat dissipation efficiency. The heat-conducting plate 9 has grooves that fit with the cooling pipe 8 to enhance thermal conductivity. The contact area is such that a connecting frame 10 is connected to the front side of the outer casing 1. Inside the connecting frame 10, threaded rods 11 are symmetrically connected on the left and right sides. A limiting pad 12 is connected between the top ends of the two threaded rods 11. The limiting pad 12 contacts and engages with the pin 5, clamping and fixing it to prevent poor contact due to loose external connections. The limiting pad 12 has a groove with the same shape as the pin 5 to enhance clamping stability. Sealing gaskets 13 are symmetrically connected front and rear inside the outer casing 1 to enhance the overall sealing performance of the outer casing 1, preventing dust and moisture from entering the device and ensuring the normal operating environment of electronic components. The front side of the B circuit board 4 is coated with a nano-coating 14, which has good waterproof, moisture-proof and anti-oxidation properties, improving the durability and reliability of the circuit board in complex environments. Both pins 5 are fitted with wear-resistant sleeves 15 to prevent wear of the pins 5 during frequent insertion and removal, extend service life, reduce contact resistance and improve connection stability. An electromagnetic shielding layer 16 is provided inside the housing 1 to block electromagnetic interference, prevent external electromagnetic waves from affecting the normal operation of the PCB circuit board 4, and reduce the electromagnetic radiation of the internal circuit to the outside world.

[0023] When lithium battery 2 is needed, the operator can simultaneously rotate two lead screws 11. The rotation of the lead screws 11 drives the limiting pad 12 to move upward. When the limiting pad 12 rises to contact the two pins 5 and effectively limits the pins 5, the rotation of the lead screws 11 is stopped, thus completing the fixing operation of the pins 5. Subsequently, the operator can connect external devices through these two pins 5. After the connection is completed, lithium battery 2 can be started. During the operation of lithium battery 2, PCB circuit board 4 will generate a lot of heat. To prevent overheating from affecting circuit stability, the operator can start water pump 7. Water pump 7 delivers coolant from water tank 6 to cooling pipe 8. When the flowing coolant passes through cooling pipe 8, it can efficiently remove the heat from PCB circuit board 4 and heat conduction plate 9, thus achieving a good heat dissipation effect. After the coolant completes its heat dissipation function, it flows back to water tank 6 from the other end of cooling pipe 8, forming a circulating cooling system to ensure the continuous and stable operation of lithium battery 2.

[0024] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A safe lithium battery with a built-in PCB board protective structure, comprising a casing (1), a battery (2), a connecting wire (3), a PCB board (4), and pins (5), wherein the battery (2) is installed at the bottom inside the casing (1), the connecting wire (3) is fixedly connected to the top of the battery (2), the PCB board (4) is installed on the front side inside the casing (1), the connecting wire (3) is fixedly connected to the PCB board (4), and pins (5) are symmetrically fixedly connected to the left and right sides of the front side of the PCB board (4), characterized in that, It also includes a water tank (6), a water pump (7), a cooling pipe (8) and a heat-conducting plate (9). The water tank (6) is installed inside the rear side of the outer shell (1). The water pump (7) is installed inside the left side of the water tank (6). The cooling pipe (8) is fixedly connected to the outlet of the water pump (7). The other end of the cooling pipe (8) is fixedly connected to the water tank (6). The cooling pipe (8) is in contact with the PCB circuit board (4). The heat-conducting plate (9) is installed inside the outer shell (1). The heat-conducting plate (9) is in contact with the PCB circuit board (4).

2. A safe lithium battery with a built-in PCB board protective structure according to claim 1, characterized in that: It also includes a connecting frame (10), a lead screw (11) and a limiting pad (12). The connecting frame (10) is fixedly connected to the front side of the outer shell (1). The lead screw (11) is symmetrically threaded inside the connecting frame (10). The limiting pad (12) is connected between the top ends of the two lead screws (11). The limiting pad (12) is in contact with the pin (5).

3. A safe lithium battery with a built-in PCB board protective structure according to claim 2, characterized in that: It also includes a sealing gasket (13), and the sealing gasket (13) is symmetrically fixedly connected to the inside of the outer shell (1).

4. A safe lithium battery with a built-in PCB board protective structure according to claim 3, characterized in that: It also includes a nano-coating (14), and the front side of the PCB circuit board (4) is provided with a nano-coating (14).

5. A safe lithium battery with a built-in PCB board protection structure according to claim 4, characterized in that: It also includes wear-resistant sleeves (15), with wear-resistant sleeves (15) fitted on both pins (5).

6. A safe lithium battery with a built-in PCB board protective structure according to claim 5, characterized in that: It also includes an electromagnetic shielding layer (16), and the front side of the inner shell (1) is provided with an electromagnetic shielding layer (16).

7. A safe lithium battery with a built-in PCB board protective structure according to claim 6, characterized in that: The heat-conducting plate (9) has a groove that fits into the cooling pipe (8).

8. A safe lithium battery with a built-in PCB board protective structure according to claim 7, characterized in that: The limiting pad (12) has a groove with the same shape as the pin (5).

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