Electric vehicle DC converter

Abstract

The utility model discloses an electric vehicle DC converter, which comprises a conversion mechanism, a circulation mechanism and a driving mechanism, and is characterized in that the conversion mechanism comprises a converter main body, a cover body arranged at the top of the converter main body, a lower flow channel arranged in the converter main body, an upper flow channel arranged in the cover body and the circulation mechanism; the circulating mechanism comprises a drip cup arranged on one side of the converter body. According to the utility model, the micro cylinder is started, then the pressure plate extrudes the drip cup in a reciprocating manner, when the drip cup is pressed to contract, liquid in the drip cup can only be injected into the liquid outlet pipe and then guide cooling liquid in the lower flow channel to flow through the liquid return pipe and the upper flow channel because the one-way valve is arranged on the liquid pumping pipe, and then when the drip cup is reshaped, pumping force generated by the drip cup can pump the cooling liquid out of the liquid outlet pipe. When the converter is in use, the liquid extraction pipe can be directly extracted, so that circulating flow of the cooling liquid is realized, heat of the converter main body can be taken away by flowing of the cooling liquid, the heat dissipation effect of the product is improved, and the damage probability is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of DC converters, in particular to a DC converter for an electric vehicle. Background Art

[0002] A DC / DC converter is a switching power supply chip that uses the energy storage characteristics of capacitors and inductors to perform high-frequency switching through a controllable switch (MOSFET, etc.) to store the input electrical energy in the capacitor (inductor). When the switch is disconnected, the electrical energy is released to the load to provide energy. Its output power or voltage capacity is related to the duty cycle (the ratio of the switch on time to the entire switch cycle).

[0003] Existing DC converters for electric battery vehicles generally have poor heat dissipation, and they generate excessive heat during operation, which makes the circuit board in the DC converter easily burned, affecting the safe driving of the vehicle. Utility Model Content

[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technology.

[0005] To this end, the technical solution adopted in this utility model is:

[0006] A DC converter for an electric vehicle comprises a conversion mechanism, a circulation mechanism and a driving mechanism, wherein the conversion mechanism comprises a converter body, a cover body installed on the top of the converter body, a downflow channel opened inside the converter body, and an upflow channel opened inside the cover body; a circulation mechanism, wherein the circulation mechanism comprises a drip pot arranged on one side of the converter body, a liquid extraction pipe connected between the cover body and the drip pot, a liquid outlet pipe connected between the converter body and the drip pot, and a liquid return pipe connected between the converter body and the cover body; and a driving mechanism, wherein the driving mechanism comprises a one-way valve installed on the liquid extraction pipe, a plate frame connected between the converter body and the drip pot, a micro cylinder embedded on one side of the converter body, and a pressure plate connected between the drip pot and the active end of the micro cylinder.

[0007] By adopting the above technical solution, the micro cylinder is started, and then the pressure plate reciprocates to squeeze the drip pot. When the drip pot is compressed and contracted, since a one-way valve is installed on the liquid extraction pipe, the liquid in the drip pot can only be injected into the liquid outlet pipe, and then the coolant in the lower flow channel is guided to flow through the return pipe and the upper flow channel. When the drip pot is restored to its original shape, the suction force generated by the drip pot can directly extract the liquid extraction pipe, thereby realizing the circulation of the coolant. The flow of coolant can take away the heat of the converter body, improve the heat dissipation effect of this product, and reduce the probability of damage.

[0008] In a preferred example, the utility model can be further configured as follows: the two ends of the liquid extraction tube are respectively connected to the interior of the upper flow channel and the interior of the drip pot.

[0009] In a preferred embodiment, the present utility model can be further configured as follows: both ends of the liquid outlet pipe are respectively communicated with the inside of the downstream channel and the inside of the drip chamber, and the diameter of the liquid extraction pipe is equal to the diameter of the liquid outlet pipe.

[0010] In a preferred embodiment, the present utility model can be further configured as follows: the liquid return pipe is located on the other side of the converter body, and both ends of the liquid return pipe are respectively communicated with the inside of the downstream channel and the inside of the upstream channel.

[0011] In a preferred embodiment, the present utility model can be further configured as follows: a gap is formed between the drip chamber and the converter body, and the micro cylinder is movably arranged inside the gap.

[0012] In a preferred embodiment, the present utility model can be further configured as follows: a plurality of heat dissipation fins are installed at the bottom of the converter body.

[0013] By adopting the above technical solution, the beneficial effects achieved by the present utility model are as follows:

[0014] In the present utility model, the micro cylinder is started, and then the pressing plate reciprocally presses the drip chamber. When the drip chamber is compressed and contracted, since a one-way valve is installed on the liquid extraction pipe, the liquid in the drip chamber can only be injected into the liquid outlet pipe, and then the coolant in the downstream channel is guided to flow through the liquid return pipe and the upstream channel. Then, when the drip chamber resumes its shape, the suction force generated by the drip chamber can directly extract the liquid extraction pipe, thereby realizing the circulating flow of the coolant. The flowing of the coolant can take away the heat of the converter body, improve the heat dissipation effect of the product, and reduce the probability of damage. Description of the Drawings

[0015] Figure 1 is a three-dimensional view of the overall structure of the present utility model;

[0016] Figure 2 is a schematic diagram of the conversion mechanism of the present utility model;

[0017] Figure 3 is a schematic diagram of the opening positions of the downstream channel and the upstream channel of the present utility model;

[0018] Figure 4 is a schematic diagram of the circulation mechanism of the present utility model;

[0019] Figure 5 is a schematic diagram of the driving mechanism of the present utility model.

[0020] Reference Signs:

[0021] 100, conversion mechanism; 110, converter body; 120, cover body; 130, downstream channel; 140, upstream channel;

[0022] 200. Circulation mechanism; 210. Drip kettle; 220. Liquid extraction tube; 230. Liquid outlet tube; 240. Liquid return tube;

[0023] 300. Driving mechanism; 310. Check valve; 320. Plate frame; 330. Micro cylinder; 340. Pressure plate;

[0024] 400. Heat dissipation fins. Specific embodiments

[0025] To make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other.

[0026] It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present utility model.

[0027] The following describes an electric vehicle DC converter provided by some embodiments of the present utility model with reference to the accompanying drawings.

[0028] Embodiment 1:

[0029] Combined with Figures 1-5 As shown in the figure, an electric vehicle DC converter provided by the present utility model includes a conversion mechanism 100, a circulation mechanism 200 and a driving mechanism 300. The conversion mechanism 100 includes a converter main body 110, a cover body 120 installed on the top of the converter main body 110, a downstream channel 130 opened inside the converter main body 110, and an upstream channel 140 opened inside the cover body 120;

[0030] Circulation mechanism 200, the circulation mechanism 200 includes a drip kettle 210 provided on one side of the converter main body 110, a liquid extraction tube 220 connected between the cover body 120 and the drip kettle 210, a liquid outlet tube 230 connected between the converter main body 110 and the drip kettle 210, and a liquid return tube 240 connected between the converter main body 110 and the cover body 120;

[0031] Driving mechanism 300, the driving mechanism 300 includes a check valve 310 installed on the liquid extraction tube 220, a plate frame 320 connected between the converter main body 110 and the drip kettle 210, a micro cylinder 330 embedded on one side of the converter main body 110, and a pressure plate 340 connected between the drip kettle 210 and the movable end of the micro cylinder 330.

[0032] Furthermore, both ends of the liquid extraction tube 220 are respectively communicated with the inside of the upstream channel 140 and the inside of the drip kettle 210. With this structural design, it is ensured that the coolant in the upstream channel 140 can smoothly flow into the drip kettle 210.

[0033] Further, both ends of the liquid outlet pipe 230 are respectively communicated with the inside of the downstream channel 130 and the inside of the drip kettle 210. The diameter of the liquid extraction pipe 220 is equal to that of the liquid outlet pipe 230. With this structural design, the coolant in the drip kettle 210 can smoothly enter the inside of the downstream channel 130 through the liquid outlet pipe 230.

[0034] Further, the liquid return pipe 240 is located on the other side of the converter body 110. Both ends of the liquid return pipe 240 are respectively communicated with the inside of the downstream channel 130 and the inside of the upstream channel 140. By providing the liquid return pipe 240, the downstream channel 130 and the upstream channel 140 can communicate smoothly.

[0035] Embodiment 2:

[0036] Combined with Figure 1 、 4 and Figure 5 As shown, on the basis of Embodiment 1, a spacing is formed between the drip kettle 210 and the converter body 110. The micro cylinder 330 is movably arranged inside the spacing. By providing the spacing, it is convenient for the pressing plate 340 to move flexibly, providing conditions for squeezing the drip kettle 210.

[0037] Embodiment 3:

[0038] Combined with Figure 4 As shown, in the above embodiment, a plurality of heat dissipation fins 400 are installed at the bottom of the converter body 110. By providing the heat dissipation fins 400, the heat dissipation efficiency of the converter body 110 can be improved.

[0039] The working principle and usage process of the present utility model: When this device is put into actual use, the downstream channel 130, the upstream channel 140, and the inside of the drip kettle 210 are all filled with coolant. Then, the micro cylinder 330 is started, and then the pressing plate 340 reciprocally squeezes the drip kettle 210. When the drip kettle 210 is compressed and contracted, since the one-way valve 310 is installed on the liquid extraction pipe 220, the liquid in the drip kettle 210 can only be injected into the liquid outlet pipe 230, and then the coolant in the downstream channel 130 is guided to flow, then flows through the liquid return pipe 240 and the upstream channel 140. Then, when the drip kettle 210 resumes its shape, the suction force generated by the drip kettle 210 can directly act on the liquid extraction pipe 220, thereby realizing the circulating flow of the coolant. The flowing of the coolant can take away the heat of the converter body 110 and the cover body 120, improve the heat dissipation effect of this product, and reduce the probability of damage.

[0040] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A DC converter for an electric vehicle, characterized in that: include: A conversion mechanism (100), the conversion mechanism (100) comprising a converter body (110), a cover body (120) mounted on the top of the converter body (110), a lower flow channel (130) opened inside the converter body (110), and an upper flow channel (140) opened inside the cover body (120); A circulation mechanism (200), the circulation mechanism (200) comprising a drip pot (210) disposed on one side of the converter body (110), a liquid extraction pipe (220) connected between the cover body (120) and the drip pot (210), a liquid outlet pipe (230) connected between the converter body (110) and the drip pot (210), and a liquid return pipe (240) connected between the converter body (110) and the cover body (120); A driving mechanism (300) comprising a one-way valve (310) mounted on the liquid extraction tube (220), a plate frame (320) connected between the converter body (110) and the drip pot (210), a micro cylinder (330) embedded in one side of the converter body (110), and a pressure plate (340) connected between the active ends of the drip pot (210) and the micro cylinder (330).

2. The electric vehicle DC converter according to claim 1, characterized in that: The two ends of the liquid extraction tube (220) are respectively connected to the interior of the upper flow channel (140) and the interior of the drip pot (210).

3. The electric vehicle DC converter according to claim 1, characterized in that: The two ends of the liquid outlet pipe (230) are respectively connected to the interior of the lower flow channel (130) and the interior of the drip pot (210), and the diameter of the liquid extraction pipe (220) is equal to the diameter of the liquid outlet pipe (230).

4. The electric vehicle DC converter according to claim 1, characterized in that: The liquid return pipe (240) is located at the other side of the converter body (110), and two ends of the liquid return pipe (240) are respectively connected to the interior of the lower flow channel (130) and the interior of the upper flow channel (140).

5. The electric vehicle DC converter according to claim 1, characterized in that: A gap is formed between the drip pot (210) and the converter body (110), and the micro cylinder (330) is movably arranged inside the gap.

6. The electric vehicle DC converter according to claim 1, characterized in that: A plurality of heat dissipation fins (400) are installed at the bottom of the converter body (110).

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