Vortex heat dissipation mechanism for truck starting power supply

Abstract

The utility model discloses an eddy current heat dissipation mechanism for a truck starting power supply, which comprises a lithium battery starting power supply and a heat dissipation mechanism positioned in the lithium battery starting power supply. The lithium battery starting power supply comprises a square shell, and a square battery module and a BMS module which are positioned in the square shell; the heat dissipation mechanism comprises two square connecting pipes, a flat pipe, two one-way valves and a vortex pipe. The vortex tube is small in size, is not provided with an active device, and is good in reliability; a compressed air source of the truck is utilized, so that stable air supply can be realized; cold air passes through the flat pipe and does not enter the lithium battery starting power supply box body, so that the I PX7 protection requirement is met; and the flat tube is 3-5mm in thickness and is tightly attached to the side plate of the square battery module during assembly, so that the occupied internal space of the square shell is small.

Description

Technical Field

[0001] The utility model relates to the field of power supply heat dissipation, in particular to an eddy current heat dissipation mechanism for a truck starting power supply. Background Art

[0002] Existing lithium battery starting power supplies for trucks experience continuous operation (discharge) during summer use, causing the battery cells to heat up. This elevated temperature can trigger the thermal protection mechanism within the starting power supply's battery management system (BMS), impacting proper operation. Therefore, cooling the lithium battery starting power supply is essential. However, existing lithium battery starting power supplies are designed for outdoor use, subject to rain and dust, which the lithium battery and BMS inherently tolerate. Therefore, the power supply enclosure must meet IPX7 protection requirements. However, due to the limited size of the truck starting battery compartment, current lithium battery starting power supplies primarily rely on passive cooling.

[0003] Existing lithium battery-powered starting power supplies suffer from poor heat dissipation and even overheating issues during summer use, impacting product performance. Conventional active cooling methods, such as liquid cooling, are bulky and complex, while air cooling is impractical due to the strong vibrations, rain, dust, and limited battery compartment space in the battery pack environment.

[0004] Currently, patent publication number CN214874331U discloses a vortex-cooled power battery thermal management system. The system features a power battery pack, a temperature sensor, an air compressor, and a vortex cooler. The vortex cooler includes a hot-end tube, a cold-end tube, an air inlet, an outlet, and branch fins. The temperature sensor and power battery are both located within the power battery pack. The air compressor is connected to one side of the vortex cooler inlet, while the other side of the vortex cooler inlet is connected to the hot-end tube and one side of the cold-end tube. The other side of the cold-end tube is connected to the branch fins of the cold-end tube, and the branch fins of the cold-end tube are connected to the outlet. The cold-end tube is made of metal and embedded in the power battery pack. When the temperature of the power battery pack is higher than the set value, the electric vehicle management system controls the air compressor to pressurize the vortex cooler. The high-pressure gas rotates at high speed in the vortex cavity to separate the cold and hot air flows. The cold air flows out of the vortex cooler into the power battery pack, completing the heat exchange and quickly cooling the power battery pack.

[0005] However, the cold end pipe branch fin of the vortex cooler of the prior art is embedded in the power battery pack, and in order to better dissipate heat, the vortex cooler cold end pipe branch fin cannot be too thick, which causes the power battery pack to be unable to abut against the vortex cooler cold end pipe branch fin, thereby causing the power battery to be unable to be arranged compactly, and thereby increasing the volume of the power battery; at the same time, since the electric vehicle itself does not have an air compressor, an external air compressor is required, at this time, space is required to place the air compressor, thereby again increasing the volume of the power battery, and at the same time, the air compressor needs to be connected to a power source to work, further increasing the power consumption of the electric vehicle. Practical new type content

[0006] The utility model aims at providing a kind of truck starting power supply vortex heat radiation mechanism, with stable air supply, good reliability, the sealing performance of lithium battery starting power supply box is guaranteed, flat pipe occupies small space, low in cost, simple structure.

[0007] The above technical purpose of the utility model is realized by the following technical scheme:

[0008] A kind of truck starting power supply vortex heat radiation mechanism, including lithium battery starting power supply, heat dissipation mechanism, the heat dissipation mechanism is located inside lithium battery starting power supply;

[0009] The lithium battery starting power supply includes square shell and square battery module located in the square shell inside BMS module;

[0010] The heat dissipation mechanism includes two square connecting pipes, flat pipe, two check valves, vortex pipe;

[0011] Two the check valves are respectively fixedly inserted in the front side and rear side of the left side middle position of square shell, two the square connecting pipes are respectively vertically located in the middle position of the front side and rear side of the left side inside square shell, the inlet end of check valve located in front side is fixedly connected with the square connecting pipe of front side and is mutually communicated, the outlet end of check valve located in rear side is fixedly connected with the square connecting pipe of rear side and is mutually communicated;

[0012] The cold gas outlet end of the vortex pipe is connected with the inlet end of the check valve of rear side;

[0013] The flat pipe is "U" shape, the "U" shape opening of the flat pipe is to left, the square battery module is located in the "U" shape opening inside flat pipe, the flat pipe clamps square battery module, the left side of rear side of flat pipe is fixedly connected with the square connecting pipe of rear side and is mutually communicated, the left side of front side of flat pipe is fixedly connected with the square connecting pipe of front side and is mutually communicated;

[0014] The compressed air inlet end of the vortex pipe is communicated with the compressed air source of truck.

[0015] The preferred options are as follows:

[0016] Preferably, the flat tube is a metal tube, and the thickness of the flat tube is 3-5 mm.

[0017] Preferably, thermal conductive glue is applied between the flat tube and the side wall of the square battery module.

[0018] Preferably, the height of the flat tube is two-thirds of the height of the square battery module.

[0019] Preferably, an electric control valve is provided at the compressed air inlet end of the vortex tube, and the electric control valve is electrically connected to the BMS module.

[0020] In summary, the utility model has the advantages of small size of vortex tube and no active devices, and good reliability; the truck's own compressed air source is used to provide stable air supply; the cold air passes through the flat tube and does not enter the lithium battery starting power supply box, meeting the IPX7 protection requirements; the flat tube is 3-5mm thick and fits tightly against the side panel of the square battery module during assembly, occupying less space inside the square shell; it avoids the shortcomings of liquid cooling and air cooling solutions such as complex structure, poor reliability, poor vibration resistance, high cost, and large volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 1. A top view of a lithium battery starting power supply in an embodiment with the square housing removed;

[0022] Figure 2 is an exploded view of the front side view of the embodiment.

[0023] In the figure, 1. lithium battery starting power supply; 2. heat dissipation mechanism; 111. square housing; 112. square battery module; 113. BMS module; 211. square connecting pipe; 212. flat tube; 213. one-way valve; 214. vortex tube; 215. electric control valve. DETAILED DESCRIPTION

[0024] The present invention will be described in further detail below with reference to the accompanying drawings.

[0025] The same reference numerals are used to represent the same parts. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the accompanying drawings.

[0026] A eddy current heat dissipation mechanism for a truck starting power supply, such as Figure 1 、 Figure 2 As shown, it includes a lithium battery starting power supply 1 and a heat dissipation mechanism 2 , and the heat dissipation mechanism 2 is located inside the lithium battery starting power supply 1 .

[0027] The lithium battery starting power supply 1 includes a square shell 111 and a square battery module 112 and a BMS module 113 located inside the square shell 111, wherein the BMS module 113 is used for battery monitoring of the square battery module 112, monitoring the voltage, current and temperature of each battery cell in real time to ensure operation within a safe range; charge and discharge control, optimizing the battery charging and discharging process to provide optimal performance and life; battery balancing, balancing the voltage between different battery cells to ensure that the battery capacity is evenly distributed; fault detection, identifying and responding to faults or abnormalities in the battery to ensure safe operation; protection, providing overvoltage, overcurrent, and overtemperature protection to prevent battery damage or fire risks.

[0028] The heat dissipation mechanism 2 includes two square connecting pipes 211, a flat pipe 212, two one-way valves 213, and a vortex tube 214;

[0029] The two one-way valves 213 are fixedly inserted into the front and rear sides of the middle position of the left side of the square shell 111 respectively, and the two square connecting pipes 211 are vertically located in the middle position of the front and rear sides of the left side of the interior of the square shell 111 respectively. The inlet end of the one-way valve 213 on the front side is fixedly connected to the square connecting pipe 211 on the front side and communicated with each other. The outlet end of the one-way valve 213 on the rear side is fixedly connected to the square connecting pipe 211 on the rear side and communicated with each other. The cold air outlet end of the vortex tube 214 is connected to the inlet end of the one-way valve 213 on the rear side. The one-way valve 213 on the rear side ensures that the gas entering the flat tube 212 from the rear side cannot flow back. At the same time, the one-way valve 213 on the front side ensures that the gas is discharged through the one-way valve 213 on the front side, and the outside air and rainwater cannot enter the flat tube 212 through the one-way valve 213 on the front side.

[0030] The flat tube 212 is "U" shaped. The flat tube 212 is a metal tube. The metal tube can further facilitate heat transfer. At the same time, the thickness of the flat tube 212 is 3-5mm. While reducing the occupied space, the thinner the thickness, the faster the heat transfer, and thus the faster the heat dissipation. The "U" shaped opening of the flat tube 212 faces left. The square battery module 112 is located inside the "U" shaped opening of the flat tube 212. The flat tube 212 clamps the square battery module 112. The flat tube 212 and the side wall of the square battery module 112 are connected. Thermal conductive glue is applied between the flat tube 212 and the square battery module 112, which not only fixes the flat tube 212 and the square battery module 112, but also facilitates heat transfer. The height of the flat tube 212 is two-thirds of the height of the square battery module 112. The larger the contact area with the square battery module 112, the faster the heat dissipation. The left side of the rear side of the flat tube 212 is fixedly connected to the square connecting tube 211 on the rear side and communicates with each other. The left side of the front side of the flat tube 212 is fixedly connected to the square connecting tube 211 on the front side and communicates with each other.

[0031] A truck's compressed air source typically uses an air compressor to compress ambient air into high-pressure gas, which is then stored in an air tank. The air compressor compresses ambient air through mechanical motion or other means, reducing its volume and increasing its pressure. The air tank then stores the compressed air for subsequent use. Compressed air in trucks is primarily used in the braking and suspension systems. In the braking system, compressed air can be used to actuate the brakes to stop or slow the vehicle. In the suspension system, compressed air can be used to adjust the vehicle's height and improve driving stability and comfort. The compressed air inlet of vortex tube 214 is connected to the truck's compressed air source, allowing the truck's compressed air source to deliver compressed air to vortex tube 214.

[0032] An electrically controlled valve 215 is provided at the compressed air inlet end of the vortex tube 214 . The electrically controlled valve 215 is electrically connected to the BMS module 113 . The BMS module 113 monitors the temperature of the square battery module 112 . When the temperature rises, the BMS module 113 controls the electrically controlled valve 215 to open, and compressed air enters the vortex tube 214 .

[0033] In this embodiment, the vortex tube 214 is a cyclone axial flow vortex refrigerator XFSW0609-01; the one-way valve 213 is a CV20 one-way valve, both of which are prior arts and will not be described in detail here.

[0034] Specific implementation process:

[0035] Step 1: The truck starts. The lithium-ion truck starting power source needs to continuously discharge. The battery cell body of the square battery module 112 heats up. The BMS module 113 monitors the temperature of the square battery module 112.

[0036] Step 2: When the temperature of the square battery module 112 rises to the pre-trial temperature, the BMS module 113 controls the electronically controlled valve 215 to open, and compressed air enters the vortex tube 214;

[0037] Step 3: The vortex tube 214 separates the compressed air into cold air and hot air. The hot air is discharged from the left side, and the cold air passes through the one-way valve 213 at the rear side and enters the square connecting tube 211. The cold air then passes through the square connecting tube 211 and enters the flat tube 212.

[0038] Step 4: The cold air passes through the "U"-shaped pipe of the flat tube 212, performs heat exchange on the square battery module 112, and takes away the heat of the square battery module 112. The air after heat exchange then enters the square connecting pipe 211 on the front side, and is finally discharged through the one-way valve 213 on the front side.

[0039] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. An eddy current heat dissipation mechanism for a truck starting power supply, characterized by: It comprises a lithium battery starting power supply (1) and a heat dissipation mechanism (2), wherein the heat dissipation mechanism (2) is located inside the lithium battery starting power supply (1); The lithium battery starting power supply (1) comprises a square housing (111), a square battery module (112) and a BMS module (113) located inside the square housing (111); The heat dissipation mechanism (2) comprises two square connecting pipes (211), a flat pipe (212), two one-way valves (213), and a vortex tube (214); The two one-way valves (213) are respectively fixedly plugged into the front and rear sides of the middle position of the left side of the square shell (111); the two square connecting pipes (211) are respectively vertically located in the middle positions of the front and rear sides of the left side of the interior of the square shell (111); the inlet end of the one-way valve (213) located on the front side is fixedly connected to the square connecting pipe (211) on the front side and communicates with each other; the outlet end of the one-way valve (213) located on the rear side is fixedly connected to the square connecting pipe (211) on the rear side and communicates with each other; The cold air outlet end of the vortex tube (214) is connected to the inlet end of the one-way valve (213) at the rear side; The flat tube (212) is U-shaped, the U-shaped opening of the flat tube (212) faces leftward, the square battery module (112) is located inside the U-shaped opening of the flat tube, the flat tube (212) clamps the square battery module (112), the left side of the rear side of the flat tube (212) is fixedly connected to the square connecting tube (211) on the rear side and communicates with each other, and the left side of the front side of the flat tube (212) is fixedly connected to the square connecting tube (211) on the front side and communicates with each other; The compressed air inlet end of the vortex tube (214) is connected to the compressed air source of the truck.

2. The eddy current heat dissipation mechanism for a truck starting power supply according to claim 1, characterized in that: The flat tube (212) is a metal tube, and the thickness of the flat tube (212) is 3-5 mm.

3. The eddy current heat dissipation mechanism for a truck starting power supply according to claim 1, characterized in that: Thermal conductive glue is applied between the flat tube (212) and the side wall of the square battery module (112).

4. The eddy current heat dissipation mechanism for a truck starting power supply according to claim 1, characterized in that: The height of the flat tube (212) is two-thirds of the height of the square battery module (112).

5. The eddy current heat dissipation mechanism for a truck starting power supply according to claim 1, characterized in that: An electric control valve (215) is provided at the compressed air inlet end of the vortex tube (214), and the electric control valve (215) is electrically connected to the BMS module (113).

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