CN214874282U

CN214874282U - Oil-immersed high-power charging module

Info

Publication number: CN214874282U
Application number: CN202021618149.3U
Authority: CN
Inventors: 刘阳
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2021-11-26
Anticipated expiration: 2030-08-06

Abstract

The utility model provides an oil-immersed high-power charging module, which comprises a circuit board of an electronic circuit of the high-power charging module; the circuit board is arranged in the sealed container, and heat conducting oil is filled in the sealed container. The utility model discloses in, the adoption is full of the conduction oil around the circuit board that is fixed with high-power module electronic circuit that charges directly dispels the heat to the heating element on the circuit board, and is effectual, does not have the noise again to satisfy user's needs. The market and the idea can be extended to other high-power supply systems.

Description

Oil-immersed high-power charging module

Technical Field

The utility model relates to an electric automobile field of charging, especially an electric automobile fills the high-power module of charging of oil-immersed formula that sets up in electric pile.

Background

The module of charging is along with filling electric pile's popularization demand bigger and bigger. The cost of the charging module accounts for 50-70% of the total cost of the charging pile, and the reliability accounts for more than 70%.

The charging module in the charging pile has high power and generates much heat, so that heat dissipation is needed, the Chinese patent application publication No. 110065408A discloses a heat dissipation charging pile, the heat dissipation charging pile comprises a charging pile body, wherein a charging element is arranged at the lower part in the charging pile body, the charging element is provided with an upper-layer heat dissipation cavity, the upper surface of the charging element is attached with a first heat dissipation fin positioned in the upper-layer heat dissipation cavity, a water cooling component is arranged above the first radiating fins and is connected with the charging element through a bracket, a first air cooling component is connected above the water cooling component in a transmission way, one side of the first air cooling component is connected with a second air cooling component in a transmission way, the water cooling assembly, the first air cooling assembly and the second air cooling assembly are all arranged in the upper-layer heat dissipation cavity, and a shutter is arranged on the side edge of the lower portion of the charging pile body.

At present, the heat dissipation fins adopt the water cooling assembly and the air cooling assembly for heat dissipation, and the device is an indirect heat dissipation device for a charging element, has a better heat dissipation effect than a direct heat dissipation effect, cannot meet the heat dissipation requirement of a high-power charging module, and has the defects of high fan noise and serious dust accumulation.

SUMMERY OF THE UTILITY MODEL

The utility model discloses adopt heat radiation fins to adopt water cooling module and air cooling module heat dissipation to carry out indirect heat dissipation to heating element in filling electric pile at present, the effect can not satisfy user's requirement, and fan noise is big, the laying dust is serious simultaneously, provides a high-power module of charging of oily formula. The heat conducting oil is used to absorb heat from the heating element directly, and the heat radiator has no fan noise and dust.

The utility model discloses realize that its technical purpose technical scheme is: an oil-immersed high-power charging module comprises a circuit board welded with an electronic circuit of the high-power charging module; the circuit board is arranged in the sealed container, and heat conducting oil is filled in the sealed container.

Further, in the oil-immersed high-power charging module: the circulating condensing system comprises a condenser, a first oil guide pipe which is led out from the bottom of the sealed container and connected to an inlet of the condenser, a second oil guide pipe which is led out from the top of the sealed container and communicated with an outlet of the condenser, and an oil pump which is arranged on the second oil guide pipe and pumps oil from an outlet of the condenser to an oil inlet of the sealed container.

Further, in the oil-immersed high-power charging module: the first oil guide pipe is provided with a first valve, and the second oil guide pipe is provided with a second valve.

Further, in the oil-immersed high-power charging module: the condenser is characterized by further comprising an oil storage tank, wherein the oil storage tank is connected with the condenser and stores redundant heat conduction oil.

Further, in the oil-immersed high-power charging module: the circuit board comprises a first PCBA board welded with an AC/DC unit, and three second PCBA boards welded with a DC/DC unit.

The utility model discloses in, the adoption is full of the conduction oil around the welding has high-power module electronic circuit that charges to the direct heat dissipation of heating element on the circuit board, and is effectual, does not have the noise again to satisfy user's needs.

The present invention will be described in more detail with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is the utility model discloses high-power charging module circuit logic block diagram of oil-immersed.

Fig. 2 is the utility model discloses the high-power module structure chart that charges of oily formula.

Fig. 3 is the utility model discloses embodiment 1 oily formula high-power module structure chart that charges.

Detailed Description

The embodiment is a charging module in a charging pile, which is an oil-immersed high-power charging module, as shown in fig. 1, the charging module is an AC/DC unit that respectively converts a 380V power frequency power supply into 800VDC, each AC/DC unit respectively corresponds to three identical DC/DC conversion units, the AC/DC units are welded on a first PCB 101, and the DC/DC conversion units are three independent DC/DC conversion units with identical electronic circuits and are respectively welded on three identical PCBs, namely a second PCB 102, a third PCB 103 and a fourth PCB. The four PCB boards are respectively installed in a case consisting of a sealed container 100 and fixed by a PCBA fixing plate in the case, as shown in figure 2, heat conduction oil is filled in the sealed container 100 and is filled around the circuit board, so that a larger contact surface with a heating element can be provided, and heat generated by the heating element can be taken away quickly. As shown in fig. 2, in the case as the sealed container 100 of the present embodiment, the conduction oil enters the sealed case through the conduction oil inlet 107 at the top of the case, and the conduction oil at the bottom is extracted from the conduction oil outlet 106 by using an oil pipe.

In this embodiment, a cable is also provided on the sealed container-type case, and the cable is connected to the charging gun.

In this embodiment, a circulating cooling system for cooling the heat conducting oil in the sealed enclosure is further provided, as shown in fig. 3, the circulating condensing system includes a condenser 200, a first oil conduit 201 led out from the bottom of the sealed container 100 and connected to an inlet of the condenser 200, a second oil conduit 202 led out from the top of the sealed container and connected to an outlet of the condenser 200, and an oil pump 205 arranged on the second oil conduit 202 and pumping the heat conducting oil from an outlet of the condenser 200 to an oil inlet of the sealed container. A first valve 203 is provided in the first oil conduit 201, and a second valve 204 is provided in the second oil conduit 202. In addition, the condenser also comprises an oil storage tank 207, wherein the oil storage tank 207 is connected with the condenser 200 and stores redundant heat conduction oil.

This embodiment covers a module power range of 20-60 Kw. If several individual modules are housed in a single cabinet, the power range can cover hundreds of kilowatts.

In this embodiment, heat transfer oil is poured into the case body of the charging module, and the whole of the manufactured board (electronic circuit board), the magnetic device, and the like intrudes into the heat transfer oil. The heat conducting oil absorbs the heat of the components; the conduction oil is at the internal circulation condensation heat dissipation of filling the electric pile cabinet.

Claims

1. An oil-immersed high-power charging module comprises a circuit board welded with an electronic circuit of the high-power charging module; the method is characterized in that: the circuit board is arranged in the sealed container, and heat conducting oil is filled in the sealed container; the circulating condensing system comprises a condenser, a first oil guide pipe which is led out from the bottom of the sealed container and connected to an inlet of the condenser, a second oil guide pipe which is led out from the top of the sealed container and communicated with an outlet of the condenser, and an oil pump which is arranged on the second oil guide pipe and pumps oil from an outlet of the condenser to an oil inlet of the sealed container.

2. The oil-immersed high-power charging module according to claim 1, characterized in that: the first oil guide pipe is provided with a first valve, and the second oil guide pipe is provided with a second valve.

3. The oil-immersed high-power charging module according to claim 1, characterized in that: the condenser is characterized by further comprising an oil storage tank, wherein the oil storage tank is connected with the condenser and stores redundant heat conduction oil.

4. The oil-immersed high-power charging module according to any one of claims 1 to 3, characterized in that: the circuit board comprises a first PCBA board of an AC/DC unit and three second PCBA boards welded with the DC/DC unit.