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CN-224233360-U - High-voltage power distribution device and vehicle

CN224233360UCN 224233360 UCN224233360 UCN 224233360UCN-224233360-U

Abstract

The disclosure relates to a high-voltage distribution device and a vehicle for solving the technical problems of large volume, heavy weight and high cost of the high-voltage distribution device. The high-voltage power distribution device comprises a high-voltage power distribution module (100) which is in communication connection with a battery management system of a vehicle, wherein the high-voltage power distribution module (100) comprises a positive power switch (2) which comprises a positive input end (21) electrically connected with a positive electrode of a power battery and a positive output end (22) electrically connected with a positive electrode of a driving load, and a negative power switch (3) which comprises a negative input end (31) electrically connected with a negative electrode of the power battery and a negative output end (22) electrically connected with a negative electrode of the driving load, one of the positive power switch (2) and the negative power switch (3) is an electronic relay, and the other of the positive power switch (2) and the negative power switch (3) is an electronic relay or an electromagnetic relay.

Inventors

  • LI WANMING

Assignees

  • 小米汽车科技有限公司

Dates

Publication Date
20260512
Application Date
20250521

Claims (10)

  1. 1. A high voltage power distribution apparatus, comprising: A high voltage power distribution module in communication with a battery management system of a vehicle, the high voltage power distribution module comprising: The positive power switch comprises a positive input end and a positive output end, wherein the positive input end is electrically connected with the positive electrode of the power battery, the positive output end is electrically connected with the positive electrode of the driving load, and The negative pole power switch comprises a negative pole input end and a negative pole output end, wherein the negative pole input end is electrically connected with the negative pole of the power battery, the negative pole output end is electrically connected with the negative pole of the driving load, One of the positive power switch and the negative power switch is an electronic relay, and the other of the positive power switch and the negative power switch is an electronic relay or an electromagnetic relay.
  2. 2. The high voltage power distribution device of claim 1 wherein the positive power switch is an electronic relay and the negative power switch is an electromagnetic relay.
  3. 3. The high voltage power distribution device of claim 2, wherein the positive power switch and the negative power switch are both electronic relays.
  4. 4. The high voltage power distribution apparatus of claim 3 wherein the positive input comprises a first positive port for electrically connecting to a positive pole of a first power cell and a second positive port for electrically connecting to a positive pole of a second power cell, The negative electrode input end comprises a first negative electrode port and a second negative electrode port, wherein the first negative electrode port is used for being electrically connected with the negative electrode of the first power battery in a on-off mode, and the second negative electrode port is used for being electrically connected with the negative electrode of the second power battery in a on-off mode.
  5. 5. The high voltage power distribution apparatus of claim 1 wherein the electronic relay comprises: A control board including a connector through which the control board is communicatively connected with a battery management unit of a vehicle, The power board comprises a connecting pin, the power board is in communication connection with the control board through the connecting pin, an input end for being electrically connected with a power battery and an output end for being electrically connected with a driving load are further arranged on the power board, and And the power device is welded on the power board.
  6. 6. The high voltage power distribution device of claim 1, further comprising a cooling module for cooling the high voltage power distribution module, the cooling module being disposed in contact with an outer surface of the high voltage power distribution module.
  7. 7. The high voltage power distribution device of claim 6, wherein the cooling module comprises a water cooling plate attached to the lower surface of the high voltage power distribution module, a cooling flow passage is arranged in the water cooling plate, and a water inlet joint and a water outlet joint which are in fluid communication with the cooling flow passage are arranged on the water cooling plate.
  8. 8. The high voltage power distribution apparatus of claim 7 wherein the cooling module further comprises a graphene thermal pad sandwiched between the water cooled plate and the high voltage power distribution module.
  9. 9. The high voltage power distribution apparatus of claim 1 wherein the high voltage power distribution module further comprises a housing, The positive power switch and the negative power switch are housed inside the housing, and the positive input, the positive output, the negative input, and the negative output extend from the housing.
  10. 10. A vehicle comprising a high voltage power distribution device according to any one of claims 1 to 9.

Description

High-voltage power distribution device and vehicle Technical Field The present disclosure relates to the field of battery technology, and more particularly, to a high voltage power distribution device and a vehicle. Background With the rapid development of the new energy automobile industry, the demands of the market on the vehicle performance and safety are greatly improved, the charge and discharge power is usually improved by improving the voltage of the power battery, and meanwhile, the short-circuit current of the power battery is also improved, so that the challenge on the battery safety is further improved. In the related art, the specifications of the relay and the fuse are improved to realize larger current carrying capacity and larger short-circuit current protection capacity, but the relay and the fuse with large specifications are large in size, heavy in weight and high in cost. Disclosure of utility model To overcome the problems in the related art, the present disclosure provides a high voltage power distribution device and a vehicle. According to a first aspect of the embodiment of the disclosure, a high-voltage power distribution device is provided, and the high-voltage power distribution device is in communication connection with a battery management system of a vehicle and comprises a positive power switch and a negative power switch, wherein the positive power switch comprises a positive input end and a positive output end, the positive input end is electrically connected with a positive electrode of a power battery, the positive output end is electrically connected with a positive electrode of a driving load, the negative power switch comprises a negative input end and a negative output end, the negative input end is electrically connected with a negative electrode of the power battery, the negative output end is electrically connected with a negative electrode of the driving load, one of the positive power switch and the negative power switch is an electronic relay, and the other one of the positive power switch and the negative power switch is an electronic relay or an electromagnetic relay. In some possible embodiments, the positive power switch is an electronic relay and the negative power switch is an electromagnetic relay. In some possible embodiments, the positive power switch and the negative power switch are both electronic relays. In some possible embodiments, the positive input includes a first positive port for electrically connecting to a positive pole of a first power cell and a second positive port for electrically connecting to a positive pole of a second power cell, the negative input includes a first negative port for electrically connecting to a negative pole of the first power cell and a second negative port for electrically connecting to a negative pole of the second power cell. In some possible embodiments, the electronic relay comprises a control board, a power board and a power device, wherein the control board comprises a connector, the control board is in communication connection with a battery management unit of a vehicle through the connector, the power board comprises a connection pin, the power board is in communication connection with the control board through the connection pin, an input end for being electrically connected with a power battery and an output end for being electrically connected with a driving load are further arranged on the power board, and the power device is welded on the power board. In some possible embodiments, the high-voltage power distribution device further comprises a cooling module for cooling the high-voltage power distribution module, and the cooling module is attached to the outer surface of the high-voltage power distribution module. In some possible embodiments, the cooling module comprises a water cooling plate attached to the lower surface of the high-voltage distribution module, a cooling runner is arranged in the water cooling plate, and a water inlet joint and a water outlet joint which are in fluid communication with the cooling runner are arranged on the water cooling plate. In some possible embodiments, the cooling module further comprises a graphene thermal pad sandwiched between the water cooling plate and the high voltage distribution module. In some possible embodiments, the high voltage power distribution module further comprises a housing, the positive power switch and the negative power switch are housed inside the housing, and the positive input, the positive output, the negative input, and the negative output protrude from the housing. According to a second aspect of the embodiments of the present disclosure, there is provided a vehicle including the high-voltage power distribution device in the above technical solution. In the high-voltage power distribution device provided by the embodiment of the disclosure, the high-voltage power distribution module comprises an anode power switch and a cathode power s