CN208867977U - The commercial automobile-used high-voltage electric device of new energy - Google Patents
The commercial automobile-used high-voltage electric device of new energy Download PDFInfo
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- CN208867977U CN208867977U CN201821204744.5U CN201821204744U CN208867977U CN 208867977 U CN208867977 U CN 208867977U CN 201821204744 U CN201821204744 U CN 201821204744U CN 208867977 U CN208867977 U CN 208867977U
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Abstract
The utility model discloses a kind of commercial automobile-used high-voltage electric devices of new energy, energy-storage system, high tension distribution system, integrated supplementary controlled system and high-voltage load including the connection of high-pressure connection line beam；Main positive contactor and main negative contactor are set in high tension distribution system；Vehicle main contactor and power-supply controller of electric are set in integrated supplementary controlled system, power-supply controller of electric integrates the first power of alterating and direct current controller, the second power of alterating and direct current controller and DC power control device；The total anode of Manual maintenance switch connects vehicle main contactor, preliminary filling contactor, high-voltage load fuse, power-supply controller of electric anode, high-voltage load anode, the negative terminal that the total negative terminal of Manual maintenance switch passes through main negative contactor even integrated supplementary controlled system and high-voltage load by main positive contactor；Main motor fuse, oil pump fuse, air pump fuse, defrosting fuse, high-voltage load fuse connect high-voltage load by power-supply controller of electric.The utility model reduces high-voltage electrical apparatus conducting wire usage amount, at low cost, highly-safe.
Description
Technical field
The utility model relates to a kind of automobile-used high-voltage electrical apparatus framework more particularly to a kind of commercial automobile-used high-voltage electrical apparatus of new energy
Device.
Background technique
Refer to attached drawing 1, currently, the high-voltage electrical apparatus framework being used on new energy electric motor vehicle mainly include energy-storage system 1,
High tension distribution system 200, control system 300, high-voltage load 4, high-pressure connection line beam 5, the first power of alterating and direct current 600, second are handed over
DC power supply 700 and DC power supply 800；Energy-storage system 1, high tension distribution system 200, control system 300 pass through high-pressure connection line
Beam 5 is sequentially connected；Main motor fuse F1, the auxiliary motor fuse F2 of control system 300 by high-pressure connection line beam 5 respectively with
The main motor 41 and auxiliary motor 42 of high-voltage load 4 connect, and the air-conditioning fuse F3 of control system 300 passes through air conditioning contact KM8
It is connect with the electric air-conditioning 43 of high-voltage load 4, the oil pump fuse F4 of control system 300 is handed over by oil pump contactor KM9 through first
DC power supply 600 is connect with the turning machine 44 of high-voltage load 4, and the air pump fuse F5 of control system 300 is contacted by alternating current-direct current
Device KM10 is connect through the second power of alterating and direct current 700 with the air compressor machine 45 of high-voltage load 4, the defrosting fuse F6 of control system 300
It is connect by defrosting contactor KM11 with the frost removal 46 of high-voltage load 400, the high-voltage load fuse F7 of control system 300 is logical
It crosses DC power supply contactor KM12 and is connect through DC power supply 800 with the battery of high-voltage load 4.The hand of high tension distribution system 200
The positive contactor KM6 of master, preliminary filling contactor KM7 and the high-voltage load fuse F7 of the dynamic total anode of service switch and control system 300
Connection, the total negative terminal of the Manual maintenance switch of high tension distribution system 200 are connect with the negative contactor KM5 of the master of control system 300.
The automobile-used high-voltage electrical apparatus framework of the prior art has following shortcoming:
1, safety is not high enough: the independence that each branch circuit load has independent relay and fuse to guarantee its work
Property or battery system lack independent relay again to protect.The problem of bringing is: adding a fuse in each branch
With a contactor, causing if there is five or six high-voltage loads, there are up to five or six contactors in this part, although each load
Between maintain start and stop independence, electrical architecture is complicated, and the contactor that high-voltage cage uses is too many, and high expensive, fault point is also more, if
Coordinate mutually bad, often occur contactor adhesion situation in special circumstances at some, can not play a protective role to high voltage component,
Security risk is quite big or vehicle can not travel.
Front voltage is provided by battery, and rear end voltage is provided by motor, and the voltage sample precision of two parts is different, causes to sentence
The pressure difference of disconnected preliminary filling front and back end is larger, so that main positive contactor KM6 closure moment, to be also possible to pressure difference excessive, contactor is caused to be closed
The impact of immediate current will affect the electrical endurance of main positive contactor KM6.
High tension distribution system 200 be not provided with it is main just, main negative contactor, and main negative contact is only equipped in control system 300
Device KM5 and main positive contactor KM6, also may be implemented vehicle power-on and power-off on-off function, but cannot achieve classification under normal circumstances
Power-on and power-off judge that battery or vehicle have high risk in high tension distribution system 200, and main positive contactor KM6 cannot respond to break again
Open or adhesion in the case of, lacked the defencive function to vehicle.
2, integration degree is low: each function components are independent, cause vehicle components very more, use vehicle space
It is a kind of waste, brings many difficulty to general arrangement.Each component will be laid with high-voltage wiring harness and be connected, vehicle purchase cost
It is higher, it is unfavorable for the sustainable development of industry.
The positive and negative anodes of first power of alterating and direct current 600, the second power of alterating and direct current 700 and DC power supply 800 need to pass through the six roots of sensation
High-voltage wiring harness realizes the connection with other high voltage components, harness it is using radical more.
Summary of the invention
The purpose of this utility model is to provide a kind of commercial automobile-used high-voltage electric devices of new energy, not only greatly reduce
The usage amount of high voltage connector, connector and high-voltage conducting wires, reduce integral vehicle cost, and make high voltage connector low-load disconnect and
Closure, reduces the failure rate of high voltage connector, improves vehicle security.
The utility model is realized in this way:
A kind of commercial automobile-used high-voltage electric device of new energy, including pass through the sequentially connected energy storage system of high-pressure connection line beam
System, high tension distribution system, integrated supplementary controlled system and high-voltage load；It is equipped with main positive contactor in high tension distribution system and master is negative
Contactor；It is equipped with vehicle main contactor KM1 and power-supply controller of electric in integrated supplementary controlled system, power-supply controller of electric is integrated with first
Power of alterating and direct current, the second power of alterating and direct current and DC power supply；The total anode of the Manual maintenance switch of high tension distribution system is passing through master just
Vehicle main contactor, the preliminary filling contactor, one end of high-voltage load fuse, power supply control of contactor and integrated supplementary controlled system
The anode connection of the anode and high-voltage load of device processed, the total negative terminal of the Manual maintenance switch of high tension distribution system pass through main negative contactor
It is connect with the negative terminal of the negative terminal of integrated supplementary controlled system, the main motor of high-voltage load, auxiliary motor, electric air-conditioning；Integrated auxiliary control
Main motor fuse, oil pump fuse, air pump fuse, defrosting fuse, the high-voltage load fuse of system processed pass through respectively
The main motor of power-supply controller of electric and high-voltage load, turning machine, air compressor machine, battery and frost removal connection.
High-tension fuse is equipped in the Manual maintenance switch of the high tension distribution system.
First power of alterating and direct current, the second power of alterating and direct current and the DC power supply passes through in integrated supplementary controlled system
Copper bar connection, and CAN communication is carried out by a gateway and vehicle.
After one end of the left side charging contactor of the high tension distribution system is in parallel with one end of right side charging contactor
It is connect with the total anode of Manual maintenance switch, the other end of left side charging contactor is connect with one end of the first charging socket, right side
The other end of charging contactor is connect with one end of the second charging socket, the other end of the first charging socket and the second charging socket
One end of the negative contactor of charging after parallel connection with high tension distribution system is connect, and the other end for the negative contactor that charges is opened with manual maintenance
The total negative terminal connection of Guan, constitutes the outer charging circuit of two-way battery.
The outer charging circuit of two-way battery is interacted with vehicle by CAN bus respectively, and the outer charging circuit difference of two-way battery
It is provided separately with the positive contactor of master and main negative contactor.
The preliminary filling contactor is in parallel with main contactor after connecting with preliminary filling resistance, constitutes precharging circuit, main contactor
Front and back end be respectively equipped with voltage sampling circuit.
The high-voltage load fuse is in parallel with precharging circuit.
The utility model compared with prior art, has the following beneficial effects:
1, high tension distribution system and integrated supplementary controlled system integrate the components of multiple functions, not only save
Many spaces, also eliminate multiple high-tension connectors and high-voltage wiring harness, reduce cost, can also subtract for production assembling process
Few many installation work-hours, improve production efficiency.
2, main negative contactor, main positive contactor be may be implemented and integrated in the classification of vehicle main contactor of pilot controller
Electricity, and can be in the case where extreme case such as vehicle main contactor cannot respond to disjunction or adhesion, main negative contactor, master just connect
Tentaculum can also disconnect lower high pressure in time, and protection staff and interior high voltage parts include the safety of battery.
3, the voltage that main motor preliminary filling both ends are judged by integrating pilot controller, improves the precision of voltage sample, contracts
The pressure difference at both ends, largely improves the service life of contactor when small main contactor closure, and that improves vehicle can
By property.
4, the usage quantity of contactor is reduced by integrating pilot controller, contactor reduction keeps fault point less, can
It is higher by property.
5, power-supply controller of electric is communicated by internal gateway plate and vehicle bus, and topological structure is reasonable, network communication matter
Higher, fast response time between node is measured, and is easy to expand, network communications quality is higher, will not be because of wherein causing all the way
Whole network paralysis.
The utility model not only greatly reduces the usage amount of high voltage connector, connector and high-voltage conducting wires, reduces vehicle
Cost, and high voltage connector low-load is made to disconnect and be closed, the failure rate of high voltage connector is reduced, vehicle security is improved
With safety when maintenance；The utility model can be adapted for pure electric vehicle and hybrid power passenger car, have good versatility.
Detailed description of the invention
Fig. 1 is the circuit diagram of the automobile-used high-voltage electric device of the prior art；
Fig. 2 is the circuit diagram of the commercial automobile-used high-voltage electric device of the utility model new energy.
In figure, 1 energy-storage system, 2 high tension distribution systems, 21 battery management systems (BMS), 22 Manual maintenance switchs are always just
End, the total negative terminal of 23 Manual maintenance switchs, 3 integrated supplementary controlled systems, 31 first power of alterating and direct current controllers, 32 second alternating current-direct currents
Power-supply controller of electric, 33 DC power control devices, 4 high-voltage loads, 41 main motors, 42 auxiliary motors, 43 electric air-conditionings, 44 turning machines, 45
Air compressor machine, 46 frost removals, 47 batteries, 5 high-pressure connection line beams, 6 first charging sockets, 7 second charging sockets, F1 main motor are molten
Disconnected device, F2 auxiliary motor fuse, F3 air-conditioning fuse, F4 oil pump fuse, F5 air pump fuse, F6 defrosting fuse, F7 high
Pressure load fuse, KM1 vehicle main contactor, the left side KM2 charging contactor, the right side KM3 charging contactor, KM4 charging is negative to be connect
Tentaculum, the negative contactor of KM5 master, the positive contactor of KM6 master, KM7 preliminary filling contactor, KM8 air-conditioning fuse, KM9 oil pump contactor,
KM10 AC/DC contactor, KM11 defrosting contactor, KM12 DC power supply contactor, R preliminary filling resistance.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments.
Attached drawing 2, a kind of commercial automobile-used high-voltage electric device of new energy are referred to, including passes through high-pressure connection line beam 5 successively
Energy-storage system 1, high tension distribution system 2, integrated supplementary controlled system 3 and the high-voltage load 4 of connection, realize the transmitting of energy；It is high
It is press-fitted in electric system 2 and is equipped with main positive contactor KM6 and main negative contactor KM5；Vehicle master is equipped in integrated supplementary controlled system 3 to connect
Tentaculum KM1 and power-supply controller of electric, power-supply controller of electric are integrated with the first power of alterating and direct current controller 31, the control of the second power of alterating and direct current
Device 32 and DC power control device 33, by power controller controls the first power of alterating and direct current 31, the second power of alterating and direct current 32 and straight
Galvanic electricity source 33；The total anode 22 of the Manual maintenance switch of high tension distribution system 2 passes through main positive contactor KM6 and integrated auxiliary control system
System 3 vehicle main contactor KM1, preliminary filling contactor KM7, one end of high-voltage load fuse F7, power-supply controller of electric anode and
The anode of high-voltage load 4 connects, and the total negative terminal 23 of the Manual maintenance switch of high tension distribution system 2 passes through main negative contactor KM5 and collection
At the negative terminal connection of the negative terminal of supplementary controlled system 3, the main motor 41 of high-voltage load 4, auxiliary motor 42, electric air-conditioning 43；It integrates auxiliary
Help main motor fuse F1, oil pump fuse F4, air pump fuse F5, defrosting fuse F6, the high-voltage load of control system 3 molten
The device F7 that breaks passes through the main motor 41 of power-supply controller of electric and high-voltage load 4, turning machine 44, air compressor machine 45, battery 47 respectively and removes
White device 46 connects.
It is equipped with high-tension fuse in the Manual maintenance switch of the high tension distribution system 2, is used for energy-storage system 1 with after
End high-voltage load 4 realizes electrical isolation in maintenance.When it is time for repair, this high-tension fuse can be extracted, is realized
Manual maintenance switch open circuit achievees the purpose that maintenance safety to make the high-voltage load 4 of rear end without high-voltage electricity.
First power of alterating and direct current controller 31, the second power of alterating and direct current controller 32 and the DC power control device 33
Connected in integrated supplementary controlled system 3 by copper bar, and CAN communication carried out by gateway and vehicle, realize start and stop and
Defencive function.
One end of the left side charging contactor KM2 of the high tension distribution system 2 and one end of right side charging contactor KM3
It is connect after parallel connection with the total anode 22 of Manual maintenance switch, the one of the other end of left side charging contactor KM2 and the first charging socket 6
End connection, the other end of right side charging contactor KM3 are connect with one end of the second charging socket 7, the first charging socket 6 and second
One end of the negative contactor KM4 of charging after the other end of charging socket 7 is in parallel with high tension distribution system 2 is connect, negative contact of charging
The other end of device KM4 is connect with the total negative terminal 23 of Manual maintenance switch, is constituted the outer charging circuit of two-way battery, is charged outside two-way battery
Circuit is interacted with vehicle by CAN bus respectively, and the outer charging circuit of two-way battery connects with the positive contactor KM6 of master and main bear respectively
Tentaculum KM5 is provided separately.High tension distribution system 2 realizes the outer charge function to battery management system 21, completely by battery management
System 21 manages charging process, and the CAN bus that some charge informations are only carried out with vehicle interacts.Vehicle is equipped with the charging of left and right two
Mouthful --- the first charging socket 6 and the second charging socket 7, two-way charging use mutually independent left side charging contactor respectively
KM2 and right side charging contactor KM3 control, when using one of charging socket, another charging socket is without high pressure
Electricity achievees the purpose that the charging socket not charged is used safely.Left side charging contactor KM2, it right side charging contactor KM3, fills
The negative contactor KM4 of electricity and main negative contactor KM5, main positive contactor KM6 are used separately, and avoid the wind of adhesion between contactor
Danger.
The preliminary filling contactor KM7 is in parallel with main contactor KM1 after connecting with preliminary filling resistance R, constitutes precharging circuit, main
The front and back end of contactor KM1 is respectively equipped with voltage sampling circuit.Voltage sample is due to using identical voltage sampling circuit, electricity
The components sampling precision such as resistance that road uses is identical, therefore sampling error can reduce, and improves the precision of voltage judgement.It is high
Pressure sampling is the voltage of the positive contactor KM6 of real-time monitoring high pressure master and the main both ends negative contactor KM5, real-time relatively energy-storage system 1
The voltage at end and the voltage of rear end dynamical system high-voltage load 4, if pressure difference very little (such as < 5V), illustrates to lead positive contactor
KM6 and main negative contactor KM5 closure are normal；If pressure difference is larger (such as > 5V), illustrate that leading positive contactor KM6 and main bear connects
Tentaculum KM5 contact resistance is larger, has ablation risk, and respond by battery management system BMS 21.
The high-voltage load fuse F7 is in parallel with precharging circuit, and when battery charges, in vehicle, other are loaded without upper
In the case that high pressure, main contactor KM1 do not have to closure, high-voltage load fuse F7 can work independently, to guarantee to charge
The not routed electricity of journey mesolow battery, also achieves the mutual locking that vehicle in battery charging process can not start.
The utility model for realizing new energy commercial vehicle from power energy-storage system, such as power battery, super capacitor etc.,
To energy distribution, power supply conversion, energy inversion and the management function between different high-voltage loads, to realize what vehicle traveling needed
Various functions.
Energy-storage system 1 is the energy source of vehicle traveling, it is preferred that power battery, super capacitor, fuel cell can be used
Deng.
High tension distribution system 2 is the high voltage power distributing cabinet for energy-storage system 1, its function includes battery management system BMS
21, high voltage power distribution contactor and fuse, insulating monitoring, high pressure sampling etc..Battery management system BMS 21 is used to real-time monitoring
The states such as voltage, the temperature of battery each unit, and implement every Preservation tactics to battery.High voltage connector includes that master just connects
Tentaculum KM6 and main negative contactor KM5, then be for realizing turning on and off from energy-storage system 1 to rear end high-voltage load 4；It is left
Side charging contactor KM2, right side charging contactor KM3, the negative contactor KM4 of charging are then the on-off for realizing charging；High pressure
Fuse is for realizing the fusing under high pressure positive and negative anodes short-circuit conditions, to realize to energy-storage system 1 and high-voltage load 4
Defencive function meets the comfort demand of vehicle traveling and passenger by the normal operation that these are loaded.The function of insulating monitoring
It is the insulation resistance of real-time report high pressure positive and negative anodes and vehicle body, informs the insulation safety situation of driver's vehicle.
The high voltage electric energy of energy-storage system 1 is converted to low-voltage electric energy by DC power control device 33 by power-supply controller of electric 3, is
The power supply of electric car low voltage equipment, and power for A-battery.First power of alterating and direct current controller 31 is air pump controller,
380V exchange is converted by vehicle high voltage power source, provides power supply for ac air compressor 45.Second power of alterating and direct current controller 32
It is oil pump controller, equally converts 380V exchange for vehicle high voltage power source, provides power supply for exchange turning machine 44.
After the total preliminary filling of motor by major loop, in addition to DC power control device 33, other each roads load all and are listed in
Each road, each branch need to only be equipped with independent fuse, not increase contactor, and the start and stop of each road load are enabled then by height
The CAN network of pressure load 4 is realized, after high-voltage load 4 and entire car controller VCU carry out the preparation of message interaction, vehicle
Controller VCU issues CAN enable signal to each individual loads, and each load initially enters working condition, and feedback voltage,
The parameters such as electric current.If faulty, high-voltage load 4 can be issued by CAN network, then be stopped working if it is catastrophe failure；No
The autonomous working of each road load is only realized, it is more specifically timely with the interaction response of entire car controller VCU, realize closed loop control
System reduces cost, reduces the fault point, improve reliability and safety without realizing start and stop by contactor.It is needed per fuse all the way
Retain, is then to prevent the road load short circuits, even if after short circuit, the only road fuse blows are not influencing other equipment just
Often work, improves the safety coefficient of vehicle.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the protection scope of utility model, because
This, any modification, equivalent substitution, improvement and etc. made within the spirit and principle of the present invention should be included in this
Within the protection scope of utility model.
Claims (7)
1. the commercial automobile-used high-voltage electric device of a kind of new energy, it is characterized in that: including being sequentially connected by high-pressure connection line beam (5)
Energy-storage system (1), high tension distribution system (2), integrated supplementary controlled system (3) and high-voltage load (4)；High tension distribution system
(2) main positive contactor KM6 and main negative contactor KM5 is equipped in；Vehicle main contactor is equipped in integrated supplementary controlled system (3)
KM1 and power-supply controller of electric, power-supply controller of electric are integrated with the first power of alterating and direct current controller (31), the second power of alterating and direct current controller
(32) and DC power control device (33)；The total anode of Manual maintenance switch (22) of high tension distribution system (2) passes through main positive contact
The vehicle main contactor KM1 of device KM6 and integrated supplementary controlled system (3), preliminary filling contactor KM7, high-voltage load fuse F7
The anode of one end, the anode of power-supply controller of electric and high-voltage load (4) connects, and the Manual maintenance switch of high tension distribution system (2) is total
Negative terminal (23) by main negative contactor KM5 and the negative terminal of integrated supplementary controlled system (3), high-voltage load (4) main motor (41),
The negative terminal connection of auxiliary motor (42), electric air-conditioning (43)；The main motor fuse F1 of integrated supplementary controlled system (3), oil pump fusing
Device F4, air pump fuse F5, defrosting fuse F6, high-voltage load fuse F7 pass through power-supply controller of electric and high-voltage load respectively
(4) main motor (41), turning machine (44), air compressor machine (45), battery (47) and frost removal (46) connection.
2. the commercial automobile-used high-voltage electric device of new energy according to claim 1, it is characterized in that: the high voltage power distribution system
High-tension fuse is equipped in the Manual maintenance switch of system (2).
3. the commercial automobile-used high-voltage electric device of new energy according to claim 1, it is characterized in that: first alternating current-direct current
Power-supply controller of electric (31), the second power of alterating and direct current controller (32) and DC power control device (33) are in integrated supplementary controlled system
(3) it is connected in by copper bar, and CAN communication is carried out by a gateway and vehicle.
4. the commercial automobile-used high-voltage electric device of new energy according to claim 1, it is characterized in that: the high voltage power distribution system
It is total with Manual maintenance switch after one end of the left side charging contactor KM2 of system (2) is in parallel with one end of right side charging contactor KM3
Anode (22) connection, the other end of left side charging contactor KM2 are connect with one end of the first charging socket (6), right side charging
The other end of tentaculum KM3 is connect with the one end of the second charging socket (7)；First charging socket (6) and the second charging socket (7)
One end of the negative contactor KM4 of charging after the other end is in parallel with high tension distribution system (2) is connect, the another of negative contactor KM4 of charging
One end is connect with the total negative terminal of Manual maintenance switch (23), constitutes the outer charging circuit of two-way battery.
5. the commercial automobile-used high-voltage electric device of new energy according to claim 4, it is characterized in that: outside the two-way battery
Charging circuit is interacted with vehicle by CAN bus respectively, and the outer charging circuit of two-way battery respectively with the positive contactor KM6 of master and master
Negative contactor KM5 is provided separately.
6. the commercial automobile-used high-voltage electric device of new energy according to claim 1, it is characterized in that: the preliminary filling contactor
KM7 is in parallel with main contactor KM1 after connecting with preliminary filling resistance R, constitutes precharging circuit, the front and back end of main contactor KM1 is set respectively
There is voltage sampling circuit.
7. the commercial automobile-used high-voltage electric device of new energy according to claim 6, it is characterized in that: the high-voltage load is molten
Disconnected device F7 is in parallel with precharging circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821204744.5U CN208867977U (en) | 2018-07-27 | 2018-07-27 | The commercial automobile-used high-voltage electric device of new energy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821204744.5U CN208867977U (en) | 2018-07-27 | 2018-07-27 | The commercial automobile-used high-voltage electric device of new energy |
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| CN208867977U true CN208867977U (en) | 2019-05-17 |
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| CN201821204744.5U Active CN208867977U (en) | 2018-07-27 | 2018-07-27 | The commercial automobile-used high-voltage electric device of new energy |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111746285A (en) * | 2020-06-24 | 2020-10-09 | 江西凯马百路佳客车有限公司 | High-voltage safety protection method for new energy whole vehicle |
| CN112477784A (en) * | 2020-11-30 | 2021-03-12 | 珠海格力电器股份有限公司 | High-voltage power distribution control system of automobile and automobile |
| CN114619984A (en) * | 2022-03-31 | 2022-06-14 | 重庆长安新能源汽车科技有限公司 | Integrated high-voltage branching device and automobile |
| US11448681B2 (en) * | 2018-04-02 | 2022-09-20 | Jing-Jin Electric Technologies Co., Ltd. | Insulation monitoring circuit for motor controller |
-
2018
- 2018-07-27 CN CN201821204744.5U patent/CN208867977U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11448681B2 (en) * | 2018-04-02 | 2022-09-20 | Jing-Jin Electric Technologies Co., Ltd. | Insulation monitoring circuit for motor controller |
| CN111746285A (en) * | 2020-06-24 | 2020-10-09 | 江西凯马百路佳客车有限公司 | High-voltage safety protection method for new energy whole vehicle |
| CN112477784A (en) * | 2020-11-30 | 2021-03-12 | 珠海格力电器股份有限公司 | High-voltage power distribution control system of automobile and automobile |
| CN114619984A (en) * | 2022-03-31 | 2022-06-14 | 重庆长安新能源汽车科技有限公司 | Integrated high-voltage branching device and automobile |
| CN114619984B (en) * | 2022-03-31 | 2023-06-02 | 重庆长安新能源汽车科技有限公司 | Integrated high-voltage branching device and automobile |
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