阅读说明：本技术 车用液冷型制动电阻系统 (Liquid cooling type brake resistor system for vehicle ) 是由 胡腾 赵峰 周锐 黄永祥 潘学玉 于 2020-04-26 设计创作，主要内容包括：本发明采用的技术方案是：一种车用液冷型制动电阻系统,其特征在于包括电机、开关、电池、制动电阻；电机的输出端与开关的一端电连接,开关的另一端与电池或者制动电阻电连接；制动电阻设置于电阻箱内,电阻箱内充满冷却液；还包括冷却液循环系统,冷却液循环系统与电阻箱相连通,电阻箱内的冷却液在冷却液循环系统内流通。本发明的目的就是针对现有技术的缺陷,提供一种车用液冷型制动电阻系统,节约能源的同时提高了整车的安全性。(The technical scheme adopted by the invention is as follows: a liquid cooling type brake resistor system for a vehicle is characterized by comprising a motor, a switch, a battery and a brake resistor; the output end of the motor is electrically connected with one end of the switch, and the other end of the switch is electrically connected with the battery or the brake resistor; the brake resistor is arranged in the resistor box, and the resistor box is filled with cooling liquid; the resistance box is characterized by further comprising a cooling liquid circulating system, the cooling liquid circulating system is communicated with the resistance box, and cooling liquid in the resistance box circulates in the cooling liquid circulating system. The invention aims to provide a liquid-cooling type brake resistor system for a vehicle, aiming at overcoming the defects of the prior art, so that the safety of the whole vehicle is improved while the energy is saved.)

1. A liquid cooling type brake resistor system for a vehicle is characterized by comprising a motor, a switch, a battery and a brake resistor; the output end of the motor is electrically connected with one end of the switch, and the other end of the switch is electrically connected with the battery or the brake resistor; the brake resistor is arranged in the resistor box, and the resistor box is filled with cooling liquid; the resistance box is characterized by further comprising a cooling liquid circulating system, the cooling liquid circulating system is communicated with the resistance box, and cooling liquid in the resistance box circulates in the cooling liquid circulating system.

2. The vehicular liquid-cooled brake resistor system according to claim 1, wherein the resistor box is filled with a coolant in a space between an outer surface of the brake resistor having a closed structure and an inner wall of the resistor box.

3. The vehicular liquid-cooled brake resistor system according to claim 2, wherein the brake resistor surface is coated with an insulating heat-conducting layer.

4. The liquid-cooled brake resistor system for vehicles as claimed in claim 3, wherein the terminals of the brake resistor are electrically connected to the switch through wires introduced into the resistor box.

5. The vehicular liquid-cooled brake resistor system according to claim 1, wherein the resistor box is provided with a liquid inlet passage and a liquid outlet passage, and the resistor box is communicated with the cooling liquid circulation system through the liquid inlet passage and the liquid outlet passage.

6. A liquid-cooled brake resistor system for vehicles according to claim 4, wherein the coolant circulation system comprises a radiator, and the liquid inlet channel and the liquid outlet channel are respectively connected to the input end and the output end of the radiator, and the liquid inlet channel is provided with a water pump and the liquid outlet channel is provided with an expansion tank.

7. The vehicular liquid-cooled brake resistor system according to claim 1, further comprising an AC/DC module, wherein an output terminal of the motor is electrically connected to one end of the switch via the AC/DC module.

8. The vehicular liquid-cooled brake resistor system according to claim 1, further comprising a DC/DC module, wherein the input terminal of the battery is electrically connected to the other terminal of the switch via the DC/DC module.

9. The vehicular liquid-cooled brake resistor system according to claim 1, wherein when the vehicle is braking for a long time or on a long slope, the motor is electrically connected to the battery through the switch, the motor generates a large amount of electric energy, and a part of the electric energy is converted into direct current to be charged in the battery; when the battery is charged to a certain amount, the motor is switched to be electrically connected with the brake resistor through the switch.

10. The vehicular liquid-cooled brake resistor system according to claim 6, wherein the water pump pumps the coolant into/out of the resistor box, and the coolant enters the resistor box and then exchanges heat with the resistor; and after the cooling liquid flows out of the resistance box, the heat of the returned cooling liquid is dissipated through the radiator.

Technical Field

The invention relates to the technical field of new energy, in particular to a liquid cooling type brake resistor system for a vehicle.

Background

When the new energy automobile decelerates or goes downhill, the brake pedal is stepped on for braking. And a part of braking force can be recovered by dragging the motor, and energy can be stored in the battery. In general, the energy storage device of a new energy vehicle has limited capacity, and the vehicle with large energy during braking cannot store energy sufficiently. If the energy storage equipment is fully charged, the system is easily damaged by continuous charging.

Disclosure of Invention

The invention aims to provide a liquid-cooling type brake resistor system for a vehicle, aiming at overcoming the defects of the prior art, so that the safety of the whole vehicle is improved while the energy is saved.

The technical scheme adopted by the invention is as follows: a liquid cooling type brake resistor system for a vehicle is characterized by comprising a motor, a switch, a battery and a brake resistor; the output end of the motor is electrically connected with one end of the switch, and the other end of the switch is electrically connected with the battery or the brake resistor, so that the electric connection switching between the motor and the battery or the brake resistor can be realized; the brake resistor is arranged in the resistor box, and the resistor box is filled with cooling liquid; the resistance box is characterized by further comprising a cooling liquid circulating system, the cooling liquid circulating system is communicated with the resistance box, and cooling liquid in the resistance box circulates in the cooling liquid circulating system.

The resistor box is a closed structure, and cooling liquid is filled in a space between the outer surface of the brake resistor and the inner wall of the resistor box.

The surface of the brake resistor is coated with an insulating heat-conducting layer.

And the terminal of the braking resistor is electrically connected with the switch through a lead introduced into the resistor box.

The resistance box is provided with a liquid inlet channel and a liquid outlet channel, and is communicated with the cooling liquid circulating system through the liquid inlet channel and the liquid outlet channel.

The cooling liquid circulating system comprises a radiator, a liquid inlet channel and a liquid outlet channel are respectively communicated with the input end and the output end of the radiator, a water pump is arranged on the liquid inlet channel, and an expansion water tank is arranged on the liquid outlet channel.

In the technical scheme, the motor further comprises an AC/DC module, and the output end of the motor is electrically connected with one end of the switch through the AC/DC module.

In the technical scheme, the battery protection device further comprises a DC/DC module, and the input end of the battery is electrically connected with the other end of the switch through the DC/DC module.

In the technical scheme, when the vehicle runs down a long slope or is braked for a long time, the motor is electrically connected with the battery through the switch, the motor generates a large amount of electric energy, and one part of the electric energy is converted into direct current to be charged into the battery; when the battery is charged to a certain amount, the motor is switched to be electrically connected with the brake resistor through the switch.

In the technical scheme, the water pump pumps cooling liquid into/out of the resistance box, and the cooling liquid enters the resistance box and then is subjected to heat exchange with the resistance; and after the cooling liquid flows out of the resistance box, the heat of the returned cooling liquid is dissipated through the radiator.

When the vehicle runs down a long slope or is braked, the braking energy is recovered by generating power through the motor to charge the battery; when the battery is fully charged, the switch is switched on the brake resistor, and the electric energy generated by recovering the brake energy is consumed by the brake resistor, so that the problem of brake energy dissipation when the brake energy is too much to be stored is solved; meanwhile, the braking force of the braking system is reduced, so that the service lives of the braking system and the tire are prolonged. The invention replaces the function of a retarder and is beneficial to reducing the weight of the commercial vehicle. The liquid cooling system promotes the brake resistor to rapidly dissipate heat. The liquid cooling system adopts the surrounding water pipe to dissipate heat of the brake resistor, and the heat dissipation effect is good.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a partial schematic view of the present invention;

101-motor, 102-AC/DC module, 103-switch, 104-DC/DC module, 105-battery, 106-brake resistor, 107-resistor box, 108-water pump, 109-radiator, 110-expansion water tank, 201-lead, 202-cooling liquid, 203-insulating heat conducting layer, 204-liquid inlet channel, 205-liquid outlet channel.

Detailed Description

The invention will be further described in detail with reference to the following drawings and specific examples, which are not intended to limit the invention, but are for clear understanding.

As shown in fig. 1, the present invention provides a liquid-cooled brake resistor system for a vehicle, which is characterized by comprising a motor 101, a switch 103, a battery 105, and a brake resistor 106; the output end of the motor 101 is electrically connected with one end of a switch 103, and the other end of the switch 103 is electrically connected with a battery 105 or a brake resistor 106; the brake resistor 106 is arranged in the resistor box 107, and the resistor box 107 is filled with the cooling liquid 202; the resistance box further comprises a cooling liquid circulating system, the cooling liquid circulating system is communicated with the resistance box 107, and the cooling liquid 202 in the resistance box 107 circulates in the cooling liquid circulating system. When the vehicle descends a long slope or is braked for a long time, the motor 101 is electrically connected with the battery 105 through the switch 103, the motor 101 generates a large amount of electric energy, and one part of the electric energy is converted into direct current to be charged in the battery 105; when the battery 105 is charged to a certain amount, the external control device drives the switch 103 to switch according to the state information of the battery 105. The battery 105 is connected with a power detection circuit, and the power detection circuit feeds back power information of the battery 105 to the external control equipment in real time. The switch 103 adopts a relay, and the external control equipment drives the relay to realize circuit switching. The motor 101 is switched to be electrically connected to the brake resistor 106 by the switch 103. The cooling mode of the brake resistor 106 is designed to be a full immersion type, wherein the cooling liquid 202 surrounds the brake resistor 106 through the resistor box 107, and the heat of the brake resistor is taken away through water circulation.

The resistor box 107 is a closed structure, and a space between the outer surface of the brake resistor 106 and the inner wall of the resistor box 107 is filled with cooling liquid 202. The surface of the brake resistor 106 is coated with an insulating heat conduction layer 203, which conducts heat and is waterproof.

The terminal of the braking resistor 106 is electrically connected with the switch 103 through a lead 201 led into the resistor box 107, so that the overall stability of circuit connection is ensured.

The resistance box 107 is provided with the liquid inlet channel 204 and the liquid outlet channel 205, the resistance box 107 is communicated with the cooling liquid circulating system through the liquid inlet channel 204 and the liquid outlet channel 205, the cooling liquid 202 is ensured to be circularly radiated in the resistance box 107, the layout is reasonably optimized, and the connection between the cooling pipeline and the cooling liquid circulating system is facilitated.

The cooling liquid circulating system comprises a radiator 109, a liquid inlet channel 204 and a liquid outlet channel 205 are respectively communicated with the input end and the output end of the radiator 109, a water pump 108 is arranged on the liquid inlet channel 204, and an expansion water tank 110 is arranged on the liquid outlet channel 205. In the technical scheme, the water pump 108 pumps the cooling liquid 202 into/out of the resistance box 107, and the cooling liquid 202 enters the resistance box 107 and then exchanges heat with the resistance; after the coolant 202 flows out of the resistor box 107, the heat of the returned coolant 202 is dissipated by the radiator 109. The expansion tank 110 provides a constant pressure and water replenishing function for the system.

In the above technical solution, the motor further includes an AC/DC module 102, and an output end of the motor 101 is electrically connected to one end of the switch 103 through the AC/DC module 102. The AC power generated by the motor 101 is converted to DC power by the AC/DC module 102.

In the above technical solution, the battery further includes a DC/DC module 104, and an input end of the battery 105 is electrically connected to the other end of the switch 103 through the DC/DC module 104. The DC/DC module 104 transforms the DC voltage at the output of the AC/DC module 102 and provides the transformed DC voltage to the battery 105 for charging.

When the vehicle runs down a long slope or is braked, the motor 101 generates electricity to recover braking energy and charge the battery 105; when the battery 105 is fully charged, the switch 103 is connected with the braking resistor 106, and the electric energy generated by recovering the braking energy is consumed by the braking resistor 106, so that the problem of the dissipation of the braking energy when the braking energy is too much and cannot be stored is solved; meanwhile, the braking force of the braking system is reduced, so that the service lives of the braking system and the tire are prolonged. The invention replaces the function of a retarder and is beneficial to reducing the weight of the commercial vehicle. The fluid cooling system facilitates rapid heat dissipation from the brake resistor 106. The liquid cooling system adopts the immersed resistor box 107 to radiate heat for the brake resistor 106, and the radiating effect is good.

Details not described in this specification are within the skill of the art that are well known to those skilled in the art.