CN115257581B - High-voltage electrical architecture of electric vehicle - Google Patents
High-voltage electrical architecture of electric vehicle Download PDFInfo
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- CN115257581B CN115257581B CN202210902861.3A CN202210902861A CN115257581B CN 115257581 B CN115257581 B CN 115257581B CN 202210902861 A CN202210902861 A CN 202210902861A CN 115257581 B CN115257581 B CN 115257581B
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- 238000010438 heat treatment Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 2
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention provides a high-voltage electric framework of an electric vehicle, which comprises a battery pack, a power distribution unit, a high-voltage load unit, a low-voltage load unit, an auxiliary emergency power supply, a power domain controller and a low-voltage domain controller, wherein the battery pack is connected with the power distribution unit and is used for supplying power to the power distribution unit, the power distribution unit comprises a high-voltage interface and a quick-charging interface, the high-voltage interface is electrically connected with the high-voltage load unit, and the battery pack comprises a first power supply, an MSD and a second power supply which are sequentially connected in series. By using the auxiliary emergency power supply and the DC/DC module, when the vehicle is normal, the working power supply of all high-voltage devices such as a motor controller, a vehicle-mounted OBC, a DCDC, a high-voltage compressor, a vehicle-mounted heater and the like is provided by converting 12V voltage by the DC/DC module, and when the low-voltage system fails and cannot supply power, the auxiliary emergency power supply supplies power for a main part of high-voltage devices (the motor controller and the like) and a part of low-voltage devices, so that powerful guarantee is provided for the safety of a driver.
Description
Technical Field
The invention belongs to the technical field of high-voltage electrical systems of electric vehicles, and particularly relates to a high-voltage electrical architecture of an electric vehicle.
Background
The electric system of the electric automobile mainly comprises a low-voltage electric system and a high-voltage electric system. The high-voltage electric system mainly comprises a battery management system, an electric driving system, a DC/DC converter, a vehicle-mounted charger, an air conditioner, PTC and the like. The battery is an energy source of the whole high-voltage system, provides energy for the electric drive and the electric control component, and is shown in fig. 1, the structure of the electric automobile at present uses the storage battery to supply power for the control loop, and the power on and power off of the whole automobile and the control of the parts are completed.
At present, a 12V storage battery, a 24V storage battery and even a 48V storage battery are mainly adopted for the low-voltage electric system, and working voltage is provided for high-voltage accessories such as a whole vehicle controller, a battery management system, a motor controller, a DCDC converter and an electric air conditioner or part of the high-voltage accessories besides supplying power for conventional low-voltage electric appliances such as a lamplight illumination system, an entertainment system and a wiper. If the 12V system is lost (failed) during the running process of the vehicle, the personal safety of a driver is greatly threatened; and as the voltage of the battery system increases and part of high-end vehicle models begin to use 800V battery systems, the conventional Si MOSFET cannot meet the requirement, and vehicle power supplies (vehicle OBC, DCDC) begin to use SiC, gaN devices. The SiC and GaN devices have high cost in a short period, so that the vehicle-mounted OBC, DCDC and motor controllers respectively independently use 800V-12V DCDC power supplies in the vehicle-mounted OBC, DCDC and motor controllers.
Disclosure of Invention
In view of the above problems, the present invention provides a high-voltage electrical architecture for an electric vehicle.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the high-voltage electric power architecture of the electric vehicle comprises a battery pack, a power distribution unit, a high-voltage load unit, a low-voltage load unit, an auxiliary emergency power supply, a power domain controller and a low-voltage domain controller;
the battery pack is connected with the power distribution unit and is used for supplying power to the power distribution unit;
the power supply distribution unit comprises a high-voltage interface and a quick charging interface, and the high-voltage interface is electrically connected with the high-voltage load unit;
the battery pack comprises a first power supply, an MSD and a second power supply which are sequentially connected in series, wherein the positive electrode and the negative electrode of the first power supply are connected with an auxiliary emergency power supply, and the positive electrode of the second power supply is connected with the auxiliary emergency power supply;
the auxiliary emergency power supply is connected with the power domain controller, the high-voltage load unit and the low-voltage domain controller and is used for supplying power to the power domain controller, the high-voltage load unit and the low-voltage domain controller;
the high-voltage load unit comprises a DC/DC module, and the DC/DC module is electrically connected with the low-voltage load unit and is used for supplying power to the low-voltage load unit.
Preferably, the power distribution unit comprises an anode bus, a cathode bus, a pre-charging line and a quick-charging line;
two ends of the positive bus are respectively connected with a positive electrode of the second power supply and a positive electrode of the high-voltage interface, and a main positive contactor is arranged on the positive bus;
the pre-charging circuit is connected with the main positive contactor in parallel and is provided with a pre-charging contactor and a pre-charging resistor which are connected in series;
the two ends of the quick charging circuit are respectively connected with the second power supply positive electrode and the quick charging interface positive electrode, and a quick charging contactor is arranged on the quick charging circuit;
the negative bus is provided with a main negative contactor, one end of the main negative contactor is connected with the negative electrode of the first power supply, and the other end of the main negative contactor is connected with the negative electrode of the high-voltage interface and the negative electrode of the quick-charging interface respectively.
Preferably, the high-voltage load unit further comprises an OBC module and an MCU module;
the OBC module, the MCU module and the DC/DC module are electrically connected with the high-voltage interface.
Preferably, the OBC module, the MCU module and the DC/DC module are electrically connected with an auxiliary emergency power supply.
Preferably, the OBC module, the MCU module and the DC/DC module are respectively provided with a low-voltage accessory, and the anode and the cathode of the DC/DC module are connected with the anode and the cathode of the low-voltage accessory and are used for supplying power to the low-voltage accessory.
Preferably, the low pressure controller includes a BCM and a gateway for enabling keyless entry and electronic lock control.
Preferably, the power domain controller includes a BMS and a VCU for controlling a main positive relay coil, a main negative relay coil, a pre-charge relay coil, and a fast charge relay coil.
Preferably, the low-voltage load unit comprises ABS, EPS, water pump, fan, wiper, car light and seat heating.
Preferably, the auxiliary emergency power supply is further provided with a DC/DC voltage reduction module in a built-in mode, and the DC/DC voltage reduction module is used for converting high voltage of the first power supply into low voltage.
Preferably, diodes are arranged on the positive electrode of the first power supply and the positive electrode of the second power supply and the circuit connected with the auxiliary emergency power supply.
The invention has the beneficial effects that:
1. according to the invention, by using the auxiliary emergency power supply and the DC/DC module, when the vehicle is normal, the working power supply of all high-voltage devices such as a motor controller, a vehicle-mounted OBC, a DCDC, a high-voltage compressor, a vehicle-mounted heater and the like is provided by converting 12V voltage by the DC/DC module, and when a low-voltage system fails and cannot supply power, the auxiliary emergency power supply supplies power for a main part of high-voltage devices (such as the motor controller and the like) and a part of low-voltage devices (such as a brake and an ESP) so as to provide powerful guarantee for the safety of a driver;
2. the invention omits a storage battery, reduces the cost, saves the space layout, and solves the problems that the prior high-voltage parts with high requirements on partial functional safety level, such as MCU and BMS, use auxiliary power supply, but the modules are mutually independent, cannot share the auxiliary power supply and cause cost waste;
3. the invention can keep the BMS and VCU working normally under the monitoring of battery overhaul.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 shows a high voltage, low voltage load and a power schematic;
FIG. 2 shows a high voltage electrical architecture diagram of an electric vehicle of the present invention;
fig. 3 shows a structural diagram of the battery pack of the present invention;
FIG. 4 shows an architecture diagram of a power distribution unit of the present invention;
fig. 5 shows an architecture diagram of a high voltage load unit;
fig. 6 shows an architecture diagram of a low voltage load unit.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
An electric vehicle high-voltage electric framework is shown in fig. 2, and comprises a battery pack, a power distribution unit, a high-voltage load unit, a low-voltage load unit, an auxiliary emergency power supply, a power domain controller and a low-voltage domain controller;
the battery pack is connected with the power distribution unit and is used for supplying power to the power distribution unit;
the power distribution unit comprises a high-voltage interface and a quick charging interface, and the high-voltage interface is electrically connected with the high-voltage load unit.
In addition, in the wake-up signal list in fig. 2, -KL15 is a wake-up signal for ignition, -CP is a slow charge signal, -a + Is a fast charge signal, -RTC is a clock wake-up signal.
It should be further noted that, in fig. 1, the auxiliary emergency power supply and the high voltage load unit are connected by positive and negative wires (shown by a thick solid line).
As shown in fig. 3, the battery pack includes a first power source, an MSD and a second power source connected in series in sequence, wherein the positive pole and the negative pole of the first power source are connected with an auxiliary emergency power source, and as can be seen from fig. 1, the positive pole of the second power source is connected with the auxiliary emergency power source, and the auxiliary emergency power source is connected with a power domain controller, a high-voltage load unit and a low-voltage domain controller and is used for supplying power to the power domain controller, the high-voltage load unit and the low-voltage domain controller.
As shown in fig. 4, the power distribution unit includes an anode bus, a cathode bus, a pre-charging circuit and a fast charging circuit, wherein two ends of the anode bus are respectively connected with the anode of the second power anode and the anode of the high-voltage interface, a main anode contactor is arranged on the anode bus, the pre-charging circuit is connected with the main anode contactor in parallel, and is provided with the pre-charging contactor and the pre-charging resistor which are connected in series, two ends of the fast charging circuit are respectively connected with the anode of the second power anode and the anode of the fast charging interface, and the fast charging circuit is provided with the fast charging contactor, a main cathode contactor is arranged on the cathode bus, one end of the main cathode contactor is connected with the cathode of the first power anode, and the other end of the main cathode contactor is respectively connected with the cathode of the high-voltage interface and the cathode of the fast charging interface.
It should be noted that the MSD means a manual disconnection device, similar to a fuse, and when maintenance is required, the first power source and the second power source may be manually disconnected through the MSD, and then the first power source separately charges the auxiliary emergency power source.
As shown in fig. 5, the high-voltage load unit includes a DC/DC module, an OBC module, and an MCU module, and in combination with fig. 6, the DC/DC module is connected to the low-voltage load unit and is used for supplying power to the low-voltage load unit; wherein, DC/DC module, OBC module and MCU module all with high pressure interface electric connection.
Further, the OBC module, the MCU module and the DC/DC module are all built with low voltage accessories (not shown in fig. 5), and the positive and negative poles of the DC/DC module are connected with the positive and negative poles of the low voltage accessories for supplying power to the low voltage accessories.
The DC/DC module can convert high voltage into low voltage of 12V to supply power to the low voltage load unit of the whole vehicle, as shown in fig. 6, which includes ABS (antilock brake system), EPS (electric power steering system), water pump, fan, wiper, lamp, and seat heating.
It should be noted that, OBC is on-vehicle charger, MCU is the control unit of motor, OBC module and MCU module are connected with supplementary emergency power source through the wire respectively.
Further, the low pressure controller includes a BCM and gateway for keyless entry and electronic lock control.
Further, the power domain controller includes a BMS and a VCU, and controls a main positive relay coil, a main negative relay coil, a pre-charge relay coil, and a fast charge relay coil.
It should be noted that, the power domain controller is to energize the coils of the relays (the main positive relay, the main negative relay, the pre-charging relay and the fast charging relay), and the relays include coils and contactors, so that the power domain controller energizes the coils of the relays, so that the main positive contactor, the pre-charging contactor, the fast charging contactor and the main negative contactor are closed, then the high-voltage interface can bill the DC/DC module, then the DC/DC module converts the voltage again, and the whole vehicle is electrified.
Further, the auxiliary emergency power supply is further internally provided with a DC/DC voltage reduction module, and the DC/DC voltage reduction module is used for converting high voltage of the first power supply into low voltage.
Further, diodes are arranged on the positive electrode of the first power supply and the positive electrode of the second power supply and the circuit connected with the auxiliary emergency power supply.
The notification device may include a diode to allow current to flow only from the first power source or the second power source to the auxiliary emergency power source.
The invention relates to a high-voltage electric power framework of an electric vehicle, which comprises the following control processes:
under normal working conditions, the MSD is in a closed state, the battery pack supplies power to the BDU unit, meanwhile, the battery pack supplies power to the auxiliary emergency power supply, then the auxiliary emergency power supply supplies power to the power domain controller through the DC/DC voltage reduction module in the battery pack, the power domain controller supplies power to the coil of the main positive relay, the coil of the pre-charging relay, the coil of the quick charging relay and the coil of the main negative relay, the main positive contactor, the pre-charging contactor, the quick charging contactor and the main negative contactor are closed, finally, the BDU unit is electrified, the high-voltage interface and the quick charging interface are electrified, the high-voltage load is supplied with power through the high-voltage interface, and electric operation on the whole vehicle is completed.
Meanwhile, the emergency power supply is assisted, and power is supplied to the low-voltage domain controller (BCM and gateway), so that keyless control, electronic lock control and the like can be realized.
When the high-voltage interface is electrified, current can be conveyed to the high-voltage load unit to supply power to the OBC module, the DC/DC module and the MCU module, and then the DC/DC module converts high voltage into low voltage to supply power to the low-voltage load unit and low-voltage accessories (such as an integrated circuit board) in the high-voltage load unit, wherein the low-voltage load unit comprises ABS, EPS, a water pump, a fan, a wiper, a car lamp and a seat for heating.
In addition, when the main positive contactor, the pre-charging contactor, the quick-charging contactor and the main negative contactor are not closed, the BDU is not electrified, the auxiliary emergency power supply can supply power to the high-voltage load unit, after the main positive contactor is closed, the high-voltage interface and the quick-charging interface are electrified and then supply power to the high-voltage load unit, the auxiliary emergency power supply can enter a dormant state after the DC/DC module works normally, when the fault of the DC/DC module is detected and the DC/DC module cannot operate, the auxiliary emergency power supply can cut in, and the auxiliary emergency power supply and the DC/DC module form a redundant structure.
When the maintenance is needed, the MSD is disconnected, and the first power supply supplies power to the auxiliary emergency power supply, so that the auxiliary emergency power supply can still work normally when the maintenance (MSD or fuse is disconnected) is ensured. The auxiliary emergency power supply is internally provided with a low-power DC/DC buck conversion module, DC/DC output supplies power to a power domain controller (BMS and VCU), and meanwhile, a driving power supply is provided for a main positive relay, a main negative relay and a pre-charging relay, so that the automobile can be powered on and powered off normally, and in addition, the BMS can record maintenance time.
Although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. The high-voltage electric power framework of the electric vehicle is characterized by comprising a battery pack, a power distribution unit, a high-voltage load unit, a low-voltage load unit, an auxiliary emergency power supply, a power domain controller and a low-voltage domain controller;
the battery pack is connected with the power distribution unit and is used for supplying power to the power distribution unit;
the power supply distribution unit comprises a high-voltage interface and a quick charging interface, and the high-voltage interface is electrically connected with the high-voltage load unit;
the battery pack comprises a first power supply, a manual disconnecting device and a second power supply which are sequentially connected in series, wherein the positive electrode and the negative electrode of the first power supply are connected with an auxiliary emergency power supply, and the positive electrode of the second power supply is connected with the auxiliary emergency power supply;
the auxiliary emergency power supply is connected with the power domain controller, the high-voltage load unit and the low-voltage domain controller and is used for supplying power to the power domain controller, the high-voltage load unit and the low-voltage domain controller;
the high-voltage load unit comprises a DC/DC module, and the DC/DC module is electrically connected with the low-voltage load unit and is used for supplying power to the low-voltage load unit;
the auxiliary emergency power supply is also internally provided with a DC/DC voltage reduction module, and the DC/DC voltage reduction module is used for converting the high voltage of the first power supply into low voltage;
diodes are arranged on the positive electrode of the first power supply and the circuit of the positive electrode of the second power supply, which is connected with the auxiliary emergency power supply;
under the working condition, the manual opening device is closed, the battery pack is used for supplying power to the battery distribution unit and the auxiliary emergency power supply, the auxiliary emergency power supply is used for supplying power to the power domain controller through the internal DC/DC voltage reduction module, the power domain controller enables the main positive contactor, the pre-charging contactor, the quick charging contactor and the main negative contactor to be closed, finally the battery distribution unit is electrified, the high-voltage interface and the quick charging interface are electrified, the high-voltage load is supplied with power through the high-voltage interface, and the electric operation on the whole vehicle is completed;
simultaneously, the auxiliary emergency power supply also supplies power to the low-voltage domain controller;
when the high-voltage interface is electrified, current is conveyed to the high-voltage load unit to supply power to the high-voltage load unit, and then the DC/DC module converts high voltage into low voltage to supply power to the low-voltage load unit and low-voltage accessories in the high-voltage load unit;
when the main positive contactor, the pre-charging contactor, the quick charging contactor and the main negative contactor are not closed, the battery distribution unit is not electrified, and the auxiliary emergency power supply supplies power to the high-voltage load unit;
after the main positive contactor, the pre-charging contactor, the quick charging contactor and the main negative contactor are closed, the high-voltage interface and the quick charging interface are electrified, then the high-voltage load unit is powered, the auxiliary emergency power supply enters a dormant state after the DC/DC module works normally, and when the failure of the DC/DC module is detected and the operation is impossible, the auxiliary emergency power supply is switched in;
when overhauling, the manual disconnecting device is disconnected, the first power supply supplies power to the auxiliary emergency power supply, and the auxiliary emergency power supply supplies power to the power domain controller through the DC/DC buck conversion module and simultaneously provides driving power for the main positive, the main negative and the pre-charging relay.
2. The electric vehicle high-voltage electrical architecture of claim 1, wherein the power distribution unit comprises a positive bus, a negative bus, a pre-charge line, and a fast-charge line;
two ends of the positive bus are respectively connected with a positive electrode of the second power supply and a positive electrode of the high-voltage interface, and a main positive contactor is arranged on the positive bus;
the pre-charging circuit is connected with the main positive contactor in parallel and is provided with a pre-charging contactor and a pre-charging resistor which are connected in series;
the two ends of the quick charging circuit are respectively connected with the second power supply positive electrode and the quick charging interface positive electrode, and a quick charging contactor is arranged on the quick charging circuit;
the negative bus is provided with a main negative contactor, one end of the main negative contactor is connected with the negative electrode of the first power supply, and the other end of the main negative contactor is connected with the negative electrode of the high-voltage interface and the negative electrode of the quick-charging interface respectively.
3. The electric vehicle high voltage electrical architecture of claim 1, wherein the high voltage load unit further comprises an OBC module and an MCU module;
the OBC module, the MCU module and the DC/DC module are electrically connected with the high-voltage interface.
4. The electric vehicle high voltage electrical architecture of claim 3 wherein the OBC module, the MCU module, and the DC/DC module are all electrically connected to an auxiliary emergency power supply.
5. The high-voltage electric power architecture of claim 4, wherein the OBC module, the MCU module and the DC/DC module are all provided with low-voltage accessories, and the positive and negative poles of the DC/DC module are connected with the positive and negative poles of the low-voltage accessories for supplying power to the low-voltage accessories.
6. The electric vehicle high voltage electrical architecture of claim 1 wherein the low voltage domain controller comprises a BCM and gateway for keyless entry and electronic lock control.
7. The electric vehicle high voltage electrical architecture of claim 1, wherein the power domain controller comprises a BMS and VCU for controlling the main positive relay coil, the main negative relay coil, the pre-charge relay coil, and the fast charge relay coil.
8. An electric vehicle high voltage electrical architecture as claimed in any of claims 1-7, characterized in that the low voltage load unit comprises ABS, EPS, water pump, fan, wiper, car light and seat heating.
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| CN112498171A (en) * | 2020-12-14 | 2021-03-16 | 北汽福田汽车股份有限公司 | Battery monitoring system and method and vehicle |
| CN215154397U (en) * | 2021-03-25 | 2021-12-14 | 合肥阳光电动力科技有限公司 | All-in-one control device, electronic equipment and vehicle |
| CN114552726A (en) * | 2022-03-09 | 2022-05-27 | 安徽鸿创新能源动力有限公司 | New energy multi-source input low-voltage power distribution system supporting wireless communication |
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