KR20120138285A - Battery charging apparatus and electric vehicle having the same - Google Patents

Abstract

PURPOSE: A battery charging device and an electric vehicle including the same are provided to prevent damage to a switching element by including a slot to support the switching element. CONSTITUTION: A PCB(161) is installed in an enclosure. A switching element(166b) is mounted on the PCB. A slot(215) is formed on a heat conductive member. A guide(210) is protruded to the switching element. A filler material(187) is filled in the slot. A cooling unit(190) is installed on a lower area of the enclosure.

Description

BATTERY CHARGING APPARATUS AND ELECTRIC VEHICLE HAVING THE SAME}

The present invention relates to a battery charging apparatus and an electric vehicle having the same, and more particularly, to a battery charging apparatus and an electric vehicle having the same so as to be able to support a heat generating component to be cooled.

Recently, the use of electric vehicles adopting electric motors as a power source is increasing due to environmental pollution problems caused by exhaust gas of vehicles and exhaustion of fossil fuels. In some cases, a so-called hybrid vehicle that uses an electric motor as a power source together with an engine to improve energy efficiency has been used.

Such an electric vehicle or a hybrid vehicle (hereinafter, referred to as “electric vehicle”) may be provided with a battery to supply power to the electric motor.

The battery may be configured as a rechargeable battery to be charged, and the electric vehicle may be provided with a battery charger for charging the battery.

In general, the battery charger may be classified into a so-called discrete battery charger configured separately from an electric vehicle, and a so-called mounted battery charger mounted on an electric vehicle.

The on-board battery charger may include an enclosure for forming an accommodation space therein and a battery charging circuit disposed in the enclosure.

On the other hand, some of the circuit components constituting the battery charging circuit, for example, the switching element may generate high heat when performing a function.

The switching device may be provided with a heat sink or a heat sink (hereinafter, referred to as a "heat sink") for cooling the switching device.

The switching device may be coupled to the heat sink with a terminal connected to the PC.

By the way, in the conventional battery charging device, the enclosure is configured so that the inner space is sealed to the outside, even if the heat sink is attached to the switching element may be insufficient cooling. In particular, when the time elapses, the internal temperature of the enclosure is increased, thereby lowering the efficiency and shortening the life of circuit components constituting the charging circuit.

In addition, the switching element is connected to the PCB by a method such as soldering, so that damage may occur in the terminal or the terminal coupling region (soldering portion) when an external force such as vibration. In particular, when the heat sink is coupled to the switching element, the heat sink increases the load acting on the terminal of the switching element or the coupling region of the terminal, and thus damage to the switching element (more specifically, fatigue of the terminal portion of the switching element). Breakage due to breakdown) can easily occur.

Accordingly, an object of the present invention is to provide a battery charging device and an electric vehicle having the same capable of supporting the switching element to suppress the occurrence of damage to the switching element.

In addition, another object of the present invention is to provide a battery charger and an electric vehicle having the same that can support and cool the switching element.

In addition, another object of the present invention is to provide a battery charger and an electric vehicle having the same capable of suppressing an increase in internal temperature and preventing a decrease in efficiency caused by an increase in temperature.

The present invention, to achieve the above object, the enclosure; A PCB (PCB) disposed inside the enclosure and forming a charging circuit; A switching element mounted on the PC; And a slot into which the switching element is inserted.

Here, the slot may be configured to be formed in the thermally conductive member.

The slot may be formed in the enclosure.

The enclosure may include a guide extending toward the switching element and having the slot formed therein.

The battery charging device may further include a cooling unit having a flow path of the cooling fluid in which the cooling fluid flows and provided in the enclosure.

The slot may be configured to be recessed in the cooling unit.

The switching device may be disposed below the PC, and the cooling unit may be configured to be disposed below the PC.

The cooling unit may be configured to be provided with a guide protruding toward the PCB and the slot is formed therein.

The guide may be configured to be in contact with the PCB.

Between the switching element and the slot may be configured to be filled with a heat transfer material, for example thermal grease (thermal grease).

On the other hand, according to another field of the present invention, a vehicle body; A battery provided in the vehicle body; And the battery charger provided in the vehicle body to charge the battery.

The battery charging device may further include a cooling unit having a flow path of the cooling fluid in which the cooling fluid flows and provided in the enclosure.

The electric vehicle may further include a cooling fluid circulation unit for allowing the cooling fluid to be circulated through the cooling unit.

The cooling fluid circulation unit may include a heater core having a flow path of the cooling fluid and arranged to exchange heat with air in the boarding space of the vehicle body.

The cooling fluid circulation unit may further include a radiator in which the cooling fluid is cooled by heat exchange with air.

As described above, according to an embodiment of the present invention, by providing a slot in which the switching element is accommodated, damage of the switching element can be suppressed when the external element such as vibration is supported by supporting the switching element.

In addition, by allowing the slot to be formed in the thermally conductive member, the switching element is supported against an external force and heat generated when the switching element performs a function can be more quickly dissipated so that the switching element can be quickly cooled.

In addition, by allowing the slot to be formed in the enclosure or the cooling unit, the switching element is supported against the external force and heat generated when the function is performed can be quickly transferred to the enclosure or the cooling unit and discharged to the outside. Thereby, an increase in the internal temperature of the enclosure can be suppressed, and a decrease in the overall efficiency of the device due to the temperature rise can be prevented.

1 is a schematic configuration diagram of an electric vehicle having a battery charging device according to an embodiment of the present invention,
2 is a perspective view of the battery charging device of FIG.
3 is a view showing the inside of FIG.
4 is an enlarged cross-sectional view of the main part of FIG. 3;
5 is an enlarged cross-sectional view taken along the line VV of FIG. 4;
6 is a modification of the guide of FIG. 5,
7 is a cross-sectional view of a battery charging apparatus for an electric vehicle according to another embodiment of the present invention;
8 is an enlarged view illustrating main parts of FIG. 7;
9 is an enlarged cross-sectional view taken along the line VII-VII of FIG. 8;
10 is a configuration diagram of a cooling fluid circulation unit of the electric vehicle of FIG.
FIG. 11 is a control block diagram of the electric vehicle of FIG. 7.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, an electric vehicle having a battery charging device according to an embodiment of the present invention includes a vehicle body 110, a battery 125 provided in the vehicle body 110, and the vehicle. It may be configured to include a battery charger 140 is provided in the body 110 and connected to an external power source to charge the battery 125.

Although not shown in the drawing, an upper area of the vehicle body 110 may be provided with a boarding space in which a driver or a passenger boards. For example, the vehicle body 110 may be provided with a cabin (not shown) in which a boarding space is formed.

The vehicle body 110 may be configured to include a plurality of wheels 115 to enable driving. Suspensions 120 may be provided between the vehicle body 110 and the wheels 115, respectively. As a result, vibrations and shocks generated when the vehicle body 110 travels on the road surface may be alleviated.

The wheels 115 may be disposed on both sides of the vehicle body 110 before and after.

The vehicle body 110 may be provided with a battery 125 for power supply.

The battery 125 may be configured as a secondary battery to be charged.

One side of the vehicle body 110 may be provided with an electric motor 130 for providing a driving force to the wheel (115).

The vehicle body 110 may be provided with an inverter device 135 for providing driving power to the electric motor 130. The inverter device 135 may be connected to the battery 125 and the electric motor 130, respectively.

The inverter device 135 may be connected to the battery 125 to receive DC power, convert the DC power into a power suitable for driving the motor 130, and provide the same to the electric motor 130.

The vehicle body 110 may include a battery charger 140 to charge the battery 125. The battery charger 140 is configured to include a charging circuit 160 connected to an external commercial power (AC) to convert the commercial power into a power suitable for charging the battery 125 to provide to the battery 125 Can be. Here, the charging circuit 160, although not shown in detail, a commercial power input unit connected to the commercial power source is input commercial power, rectifier and smoothing unit for converting the commercial power input through the commercial power input unit into direct current A power converter converts the converted DC power into a power suitable for charging the battery 125 and outputs the converted power.

As shown in FIG. 2, the battery charger 140 includes an enclosure 141, a PCB 161 disposed inside the enclosure 141 and forming a charging circuit 160. It may be configured to include a switching element 166a mounted on the PC 161 and a slot into which the switching element 166a is inserted.

The enclosure 141 may be configured to form an accommodation space therein.

The enclosure 141 may be formed of, for example, a rectangular parallelepiped having an accommodation space therein.

The enclosure 141 may be formed of a thermoelectric member (or a thermal conductor). For example, the enclosure 141 may be made of aluminum (Al).

The enclosure 141 may include, for example, a main body 142 that forms an accommodation space therein and has an open upper region, and a cover 144 that opens and closes an upper opening of the main body 142. Here, the enclosure 141 may be configured to be coupled to each other along the horizontal direction to form a sealed receiving space in cooperation with each other.

The enclosure 141 may be configured to hermetically block the interior space and the exterior. Thereby, the moisture of the outside of the enclosure 141 can be prevented from chipping (penetrating) into the interior of the enclosure 141.

One side of the enclosure 141 may be provided with a coupling unit 145 so that the enclosure 141 is fixedly coupled to the object (for example, the vehicle body 110). The coupling part 145 may be formed in plural on both sides of the enclosure 141.

An outside of the enclosure 141 may be provided with an input terminal 146 connected to the commercial power and inputting the commercial power to the charging circuit 160.

An output terminal 147 may be provided outside the enclosure 141 to output a DC power converted by the charging circuit 160 to be suitable for charging the battery 125.

The enclosure 141 may be provided with a control terminal 148 through which a control signal is transmitted to control the charging circuit 160.

Meanwhile, a charging circuit 160 for charging the battery 125 may be provided inside the enclosure 141. The charging circuit 160 may include a PC 161 and a plurality of circuit components 165 mounted on the PC 161.

The circuit component 165 may include a switching device 166a.

The switching element 166a may be configured in plural.

The switching element 166a may be implemented with, for example, a plurality of MOSFETs (METAL-OXIDE-SEMICONDUCTOR FIELD-EFFECT-TRANSISTOR) 166a. In the present exemplary embodiment, the switching element 166a is exemplified by eight MOSFETs 166a. However, the number of switching elements 166a may be appropriately adjusted.

The switching element 166a may include a body 167 and a plurality of terminals 168 extending from one side of the body 167. In the present embodiment, the switching element 166a illustrates the case where the three terminals 168 are provided.

The switching element 166a may be mounted by coupling the terminal 168 to a predetermined position of the PC 161 by soldering or the like.

The switching element 166a may be inserted into and coupled to the slot 185. More specifically, a slot 185 may be provided around the switching element 166a to allow the switching element 166a to be inserted and supported. As a result, excessive displacement of the switching element 166a may be stably supported when an external force such as vibration is applied, thereby preventing damage of the switching element 166a.

The slot 185 may be formed by a thermally conductive member.

More specifically, the slot 185 may be formed in the enclosure 141.

The enclosure 141 may be provided with a guide 180a protruding toward the switching element 166a.

The guide 180a may be formed together with the manufacture of the enclosure 141. That is, the guide 180a may be formed of the same material (aluminum) as the enclosure 141. As a result, the switching element 166a can be stably supported against an external force, and heat generated when the switching element 166a performs a function is quickly transferred to the enclosure 141 through the guide 180a. Can be radiated to the outside.

The guide 180a may be configured to extend downward from the upper region of the enclosure 141 toward the switching element 166a.

A slot 185 may be formed in the guide 180a to allow the switching device 166a to be inserted therein.

One or a plurality of slots 185 may be provided in the guide 180a.

The guide 180a may be configured in plural numbers.

The guide 180a may be formed in a number corresponding to the number of the switching elements 166a.

Here, the number of guides 180a and the number of slots 185 formed in the guides 180a may be appropriately adjusted.

More specifically, for example, as illustrated in FIG. 6, two guides 180b are configured to accommodate all eight switching elements (MOSPETs) 166a, and four guides 180b are provided in each guide 180b. Slots 185 may be configured respectively.

The filling material 187 may be filled in the slot 185.

The filler material 187 may be composed of a heat transfer material. For example, the filler 187 may be implemented with a thermal grease 187. As a result, heat generated when the function of the switching device 166a is performed is quickly transferred to the guide, so that the switching device 166a can be quickly cooled.

On the other hand, the battery charging device 140 of the present embodiment may be configured to further include a cooling unit 190 provided in the enclosure 141 and provided with a flow path 194 of the cooling fluid flows.

The cooling unit 190 may be provided in the lower region of the enclosure 141.

The cooling unit 190 may be configured to exchange heat with the inner space of the enclosure 141 and / or the enclosure 141. As a result, the inner space of the enclosure 141 or the enclosure 141 may be cooled.

In the enclosure 141, a cooling fluid inlet 195 formed to allow a cooling fluid to flow into the cooling unit 190, and the cooling fluid passing through the cooling unit 190 may flow out. Cooling fluid outlet 196 is formed may be provided. For example, the cooling fluid inlet 195 and the cooling fluid outlet 196 may be provided in an upper region of the enclosure 141 and extend downward along the sidewall of the enclosure 141 to cool the liquid. Each unit 190 may be configured to be connected.

In this configuration, the input terminal 146 may be connected to a commercial power source when the battery 125 is charged. When commercial AC power is input through the input terminal 146, the charging circuit 160 may be converted into DC power suitable for charging the battery 125. The DC power converted by the charging circuit 160 may be provided to the battery 125 through the output terminal 147.

Meanwhile, in the process of converting the commercial AC power into DC power, heat may be generated in the switching device 166a when the switching device 166a performs a function. In this case, heat generated by the switching element 166a may be transferred to the guides 180a and 180b through the heat transfer material, that is, the thermal grease 187.

Heat transferred to the guides 180a and 180b may be quickly transferred to the enclosure 141 by conduction. As a result, heat generated in the switching element 166a can be quickly arranged (discharged) to the outside. According to this, the increase in the internal temperature of the enclosure 141 may be suppressed by the heat generated by the switching element 166a, and the efficiency of the device may be prevented from being lowered due to the increase in the internal temperature of the enclosure 141. Can be.

On the other hand, the vehicle body 110 may be caused by the vibration of the electric motor 130, and the like. In this case, the guides 180a and 180b may surround the switching element 166a to prevent excessive displacement of the switching element 166a. As a result, damage occurrence of the terminal 168 of the switching element 166a due to excessive displacement of the switching element 166a can be suppressed.

[2]

Hereinafter, another embodiment of the present invention will be described with reference to FIGS. 7 to 11. The same and equivalent parts as those in the above-described and illustrated configurations will be omitted for convenience of description of the drawings, and redundant descriptions of some components will be omitted.

As described above, the electric vehicle including the battery charging device of the present embodiment is provided in the vehicle body 110, the battery 125 provided in the vehicle body 110, and the vehicle body 110. It may be configured to include a battery charger 140 that provides a power source suitable for charging the battery 125.

As shown in FIGS. 7 and 8, the battery charger 140 includes an enclosure 141, a PC 161 disposed inside the enclosure 141 and forming a charging circuit 160. It may include a switching element 166b mounted on the PC 161 and a slot 215 into which the switching element 166b is inserted.

The enclosure 141 may be configured of a rectangular parallelepiped having an accommodation space therein.

The enclosure 141 may be composed of a thermally conductive member.

The enclosure 141 may include a main body 142 opened upward and a cover 144 for opening and closing the upper opening of the main body 142.

The charging circuit 160 may be provided inside the enclosure 141.

The charging circuit 160 may include a PCB 161 disposed inside the enclosure 141 and a plurality of circuit components 165 provided in the PCB 161.

The circuit component 165 may include a plurality of switching elements 166b. More specifically, the switching device 166b may be implemented by a MOSFET 166b.

The switching element 166b may include a body 167 and a plurality of terminals 168 extending to the body 167.

The switching element 166b may be mounted by soldering or soldering the terminal 168 at a predetermined position on the PC 161.

The PCB 161 may be provided in an inner lower region of the enclosure 141.

The switching element 166b may be disposed below the PCB 161. More specifically, as shown in FIG. 8, each of the switching elements 166b couples the terminal 168 to the bottom surface of the PC 161 so that the body 167 is lower than the PC 161. It can be mounted to protrude downward.

The battery charging device 140 may further include a cooling unit 190 provided in the enclosure 141 and having a flow path 194 of the cooling fluid in which the cooling fluid flows.

The cooling unit 190 includes a cooling unit body 192 formed of a thermally conductive member (thermal conductor) and a flow passage 194 formed to allow a cooling fluid to flow inside the cooling unit body 192. It may be provided with.

The cooling unit 190 may include a cooling fluid inlet 195 formed to allow a cooling fluid to flow into the flow passage 194 and a cooling fluid outlet 196 formed to allow the cooling fluid to flow out. have.

The cooling fluid inlet 195 and the cooling fluid outlet 196 may be provided at one side of the enclosure 141, respectively. For example, the cooling fluid inlet 195 and the cooling fluid outlet 196 may be disposed in an upper region of the enclosure 141, and the cooling unit body 192 is in the lower portion of the enclosure 141. May be placed in the area. In this case, the cooling fluid inlet 195 and the cooling fluid outlet 196 may extend downwardly along the sidewalls of the enclosure 141 to be connected to the flow path 194 of the cooling unit body 192, respectively. .

The cooling unit 190 may be formed, for example, in a rectangular plate shape.

The cooling unit 190 may be disposed below the PCB 161.

The cooling unit 190 may be spaced apart a predetermined distance on the lower side of the PC 161.

The cooling unit 190 may be provided with a slot 215 to insert the switching element (166b).

A plurality of slots 215 may be formed in the cooling unit 190.

More specifically, each slot 215 may be formed to be recessed to a predetermined depth on the upper surface of the cooling unit 190 (more specifically, the upper surface of the cooling unit body 192).

The cooling unit 190 may include a guide 210 protruding toward the switching element 166b.

As shown in FIG. 8, the guide 210 may be configured such that an end (upper end portion in the drawing) is in contact with the PC 161. As a result, the PCB 161 may be supported by the guide 210. Accordingly, the switching device 166b can be supported more stably.

The guide 210 may be composed of a plurality.

Slots 215 into which the switching element 166b is inserted may be provided in the guide 210. As a result, each of the switching elements 166b may be stably supported by the guide 210, and at the same time, heat generated when the function of each of the switching elements 166b is performed is transferred to the cooling unit through the guide 210. And can be quickly delivered to 190.

In this embodiment, the case in which the guide 210 is configured to correspond to the number of the switching elements 166b is described as an example. However, the number of the guide 210 and the slot 215 may be appropriately adjusted. have. For example, two guides (not shown) may be configured, and four slots (not shown) may be provided in each guide.

As shown in FIGS. 8 and 9, a filling material 187 may be filled between each switching element 166b and the slot 215.

The filling material 187 may be implemented with a thermal grease 187. As a result, heat generated in each of the switching elements 166b may be transferred to the guide 210 more quickly. In addition, the thermal grease 187 may buffer the switching element 166b when an external force such as vibration is applied to the switching element 166b.

On the other hand, the electric vehicle of the present embodiment may be configured with a cooling fluid circulation unit 220 to allow the cooling fluid to be circulated via the cooling unit 190. Here, the cooling fluid may be preferably composed of a liquid having a low freezing point (for example, brine).

As shown in FIG. 10, the cooling fluid circulation unit 220 may include a fluid pipe 222 forming a flow path of the cooling fluid, and a cooling fluid flow promoting means for promoting the flow of the cooling fluid. Can be.

The cooling fluid flow means may be implemented with a pump 224.

One side of the pump 224, more specifically, the inlet side of the pump 224 may be provided with a tank 225 for temporarily storing the cooling fluid.

The fluid pipe 222 may be connected in communication with the cooling fluid inlet 195 and the cooling fluid outlet 196 of the cooling unit 190 of the battery charger 140, respectively.

The cooling fluid circulation unit 220 may include a heater core 226 having a cooling fluid flow path and arranged to exchange heat with air in the boarding space of the vehicle body 110. For example, the heater core 226 may be configured as a conventional heat exchanger that heat exchanges while air passes. As a result, heat (heat energy) recovered while cooling the battery charger 140 may be utilized for heating. Accordingly, when the vehicle body 110 is heated, the amount of electricity consumed by the battery 125 for heating may be reduced as much as the heat energy recovered by the battery charger 140 is used for heating. As a result, the consumption of the battery 125 may be reduced, and thus the driving distance of the vehicle body 110 may be extended.

One side of the heater core 226 may be provided with a blowing fan 227 to promote the flow of air heat exchanged with the heater core 226.

The cooling fluid circulation unit 220 may be provided with a radiator 228 in which the cooling fluid is cooled by heat exchange with air. As a result, the temperature of the cooling fluid can be lowered, and the battery charger 140 can be continuously cooled.

One side of the radiator 228 may be provided with a cooling fan 229 for promoting the flow of air to heat exchange with the radiator 228.

The cooling fluid circulation unit 220 may be provided at an inlet side of the heater core 226 and the radiator 228 to include flow path changing means for changing the flow path.

The flow path changing means may be implemented with a flow path change valve 231. The flow path change valve 231 may be implemented as, for example, a three-way valve.

The inflow pipes of the heater core 226 and the radiator 228 may be connected to the flow path change valve 231, respectively. As a result, the cooling fluid may be circulated through the heater core 226 or the radiator 228. Here, the flow path changing means may include a first opening and closing valve and a second opening and closing valve disposed at each inlet of the radiator 228 and the heater core 226 so as to open and close the corresponding inlet.

Each outlet side of the heater core 226 and the radiator 228 may be provided with a check valve (or non-return valve) 233, respectively.

As illustrated in FIG. 11, the electric vehicle of the present embodiment may include a controller 240 having a control program.

The controller 240 may be configured to change the flow path of the cooling fluid according to the operation mode. For example, the operation mode may include a heater core operation mode in which the cooling fluid is circulated through the heater core 226.

The driving mode selection unit 245 may be connected to the control unit 240 so that the driving mode may be selected.

The control unit 240 may be configured to control the flow rate of the cooling fluid based on the temperature of the cooling fluid. More specifically, the control unit 240 may decrease the temperature of the cooling fluid by increasing the flow rate of the cooling fluid when the temperature of the cooling fluid exceeds a set temperature. The controller 240 may increase the rotational speed of the pump 224 when the flow rate of the cooling fluid is to be increased. In this case, when the flow rate of the cooling fluid increases, the cooling fluid is cooled in the radiator 228 and the like as compared with the speed at which the temperature of the cooling fluid rises while the battery charging device 140 is cooled. The speed at which the temperature decreases becomes large, and thus the temperature of the cooling fluid may decrease.

The control unit 240 may be connected to the temperature detection unit 250 for detecting the temperature of the cooling fluid so as to transmit a signal. That is, the temperature detection unit 250 may detect the temperature of the cooling fluid and transmit the result to the control unit 240 as an electric signal. As a result, the control unit 240 may recognize the sensing temperature of the cooling fluid.

The pump 224 may be controllably connected to the controller 240.

The cooling fan 229 may be controllably connected to the controller 240. As a result, the controller 240 may control driving of the cooling fan 229 to control the heat radiation rate of the radiator 228.

In this configuration, the input terminal 146 may be connected to a commercial power source when the battery 125 is charged. When commercial AC power is input through the input terminal 146, the charging circuit 160 may be converted into DC power suitable for charging the battery 125. The DC power converted by the charging circuit 160 may be provided to the battery 125 through the output terminal 147.

In the process of converting the commercial AC power to DC power, heat may be generated when the switching element 166b performs a function. In this case, heat generated in the switching device 166b may be transferred to the guide 210 through the heat transfer material, that is, the thermal grease 187. The heat transferred to the guide 210 may be transferred to the cooling unit body 192.

Meanwhile, when the battery 125 is charged, a cooling fluid may flow into and out of the cooling unit 190. More specifically, the cooling fluid pumped by the pump 224 may be moved along the fluid pipe 222. The cooling fluid may be introduced through the cooling fluid inlet 195 and moved along the flow path 194 of the cooling unit 190. In this case, the cooling fluid may exchange heat with the cooling unit body 192. That is, heat of the cooling unit body 192 may be transferred to the cooling fluid. The cooling fluid that cools the cooling unit body 192 while moving along the flow path 194 of the cooling unit 190 may be discharged through the cooling fluid outlet 196 and may be moved along the fluid pipe 222. .

When the heater core operation mode is selected by the operation mode selector 245, the controller 240 may control the flow path change valve 231 to allow the cooling fluid to circulate through the heater core 226. have.

The cooling fluid whose temperature rises while cooling the battery charger 140 via the battery charger 140 is cooled while exchanging heat with the air in the boarding space of the vehicle body 110 via the heater core 226. Can be. The air, which is in contact with the heater core 226 and heat exchanged to rise in temperature, may be discharged to the boarding space.

When the heater core operation mode is not selected, the control unit 240 controls the flow path change valve 231 to allow the refrigerant passing through the battery charging device 140 to circulate through the radiator 228. Can be.

On the other hand, the vehicle body 110 may be caused by the vibration of the electric motor 130, and the like. In this case, the guide 210 may surround the switching device 166b to prevent excessive displacement of the switching device 166b. As a result, damage occurrence of the terminal 168 of the switching element 166b due to excessive displacement of the switching element 166b can be suppressed.

In the above, specific embodiments of the present invention have been shown and described. However, the present invention can be embodied in various forms without departing from the spirit or essential features thereof, so the embodiments described above should not be limited by the details of the detailed description.

Further, even when the embodiments not listed in the detailed description have been described, it should be interpreted broadly within the scope of the technical idea defined in the appended claims. It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

110: vehicle body 115: wheel
125: battery 130: electric motor
135: inverter device 140: battery charging device
141: enclosure 160: charging circuit
161 PCC 165 circuit components
166a, 166b: switching element (mospet)
167: body 168: terminal
180a, 180b, 210: Guide 185,215: Slot
187: Filling material (thermal grease) 190: Cooling unit
220: cooling fluid circulation unit 222: fluid pipe
224: pump 226: heater core
228: radiator 231: flow path change valve
240: control unit 245: operation mode selection unit
250: temperature detection unit

Claims (15)

Enclosure;
A PCB (PCB) disposed inside the enclosure and forming a charging circuit;
A switching element mounted on the PC; And
A slot into which the switching element is inserted;
Battery charging device comprising a. The method of claim 1,
And the slot is formed in the thermally conductive member. The method of claim 2,
The slot is a battery charger, characterized in that formed in the enclosure. The method of claim 3,
The enclosure includes a guide extending toward the switching element and having the slot formed therein. The method of claim 1,
And a cooling unit having a flow path of the cooling fluid in which the cooling fluid flows and provided in the enclosure. The method of claim 5,
The slot is a battery charger, characterized in that formed in the cooling unit. The method according to claim 6,
The switching element is disposed below the PCB,
The cooling unit is a battery charging apparatus, characterized in that disposed on the lower side of the PC. The method of claim 7, wherein
The cooling unit is a battery charging device, characterized in that provided with a guide protruding toward the PC and the slot is formed therein. 9. The method of claim 8,
And the guide is in contact with the PC. 10. The method according to any one of claims 1 to 9,
Battery charging device, characterized in that the heat transfer material is charged between the switching element and the slot. Vehicle body;
A battery provided in the vehicle body; And
A battery charger according to claim 1, which is provided in the vehicle body to charge the battery;
Electric vehicle comprising a. The method of claim 11,
The battery charging apparatus further comprises a cooling unit having a flow path of the cooling fluid in which the cooling fluid flows and is provided in the enclosure. The method of claim 12,
And a cooling fluid circulation unit allowing the cooling fluid to be circulated through the cooling unit. The method of claim 13,
The cooling fluid circulation unit comprises a heater core having a flow path of the cooling fluid is arranged to exchange heat with the air in the boarding space of the vehicle body. 15. The method of claim 14,
The cooling fluid circulation unit further comprises a radiator in which the cooling fluid is cooled by heat exchange with air.

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