CN215793206U - Hydrogen fuel cell vehicle power system containing 48V storage battery - Google Patents
Hydrogen fuel cell vehicle power system containing 48V storage battery Download PDFInfo
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- CN215793206U CN215793206U CN202121265107.0U CN202121265107U CN215793206U CN 215793206 U CN215793206 U CN 215793206U CN 202121265107 U CN202121265107 U CN 202121265107U CN 215793206 U CN215793206 U CN 215793206U
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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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
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Abstract
The utility model provides a hydrogen fuel cell vehicle power system containing a 48V storage battery, which comprises: the system comprises a vehicle 48V electric device, a vehicle 12V/24V electric device, a 48V storage battery, a 12V/24V low-voltage storage battery, a bidirectional DC/DC, a high-voltage distribution box, a driving motor controller and a driving motor; the 48V storage battery is electrically connected with a 48V electric device and a bidirectional DC/DC; the 12V/24V low-voltage storage battery is electrically connected with 12V/24V electric devices and bidirectional DC/DC electric devices of the whole vehicle; the bidirectional DC/DC is electrically connected with the high-voltage distribution box; the high-voltage distribution box is electrically connected with the driving motor controller; the driving motor controller is electrically connected with the driving motor. The utility model has good compatibility, is beneficial to ensuring the stable operation of each controller and providing energy feedback, and simplifies the layout of the whole vehicle.
Description
Technical Field
The utility model relates to the field of fuel cell automobile power systems, in particular to a hydrogen fuel cell automobile power system containing a 48V storage battery.
Background
The traditional fuel vehicle is a 12V/24V low-voltage electric system, a pure electric vehicle or a hybrid vehicle is generally a 12V/24V low-voltage electric + 300V-750V high-voltage platform, and for a hydrogen fuel cell vehicle, an 12/24V low-voltage system + 300-750V high-voltage platform + fuel cell system structure is mostly adopted at present. Because the mass of the power battery is at least 100Kg, the power battery also occupies a certain arrangement space of the whole vehicle, so that the hydrogen fuel cell vehicle is required to be provided with a fuel cell system and a power battery, a corresponding high-voltage cable is added, the arrangement of the whole vehicle is more difficult, and the mass of the whole vehicle is heavier.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a power system of a 12V/24V low-voltage +48V storage battery + a hydrogen fuel cell vehicle of a fuel cell system based on the high-voltage, low-voltage power and capacity requirements of the hydrogen fuel cell system and the current technical state of 48V storage batteries.
The utility model provides a hydrogen fuel cell vehicle power system containing a 48V storage battery, which comprises:
the system comprises a vehicle 48V electric device, a vehicle 12V/24V electric device, a 48V storage battery, a 12V/24V low-voltage storage battery, a bidirectional DC/DC, a high-voltage distribution box, a driving motor controller and a driving motor;
the 48V storage battery is electrically connected with a 48V electric device and a bidirectional DC/DC; the 12V/24V low-voltage storage battery is electrically connected with 12V/24V electric devices and bidirectional DC/DC electric devices of the whole vehicle;
the bidirectional DC/DC is electrically connected with the high-voltage distribution box; the high-voltage distribution box is electrically connected with the driving motor controller; the driving motor controller is electrically connected with the driving motor.
Further, the vehicle 48V electric appliance comprises: a 48V device of a hydrogen fuel cell system, an air conditioner for a vehicle, a chassis active safety system and a motor feedback energy recovery system.
Further, the hydrogen fuel cell system 48V device includes: hydrogen circulating pump, deionized water circulating pump, cold start electric heater, thermal management fan and air compressor machine.
Further, the electric appliance of the whole vehicle 12V/24V comprises: the system comprises a VCU vehicle controller, an HCU hydrogen controller, an FCU fuel cell system controller, a PDU high-voltage distribution box, an MCU driving motor controller and a BCM vehicle body controller.
The system also includes a hydrogen fuel cell system high voltage portion electrically connected to the high voltage distribution box.
The beneficial effects provided by the utility model are as follows: the system has good compatibility, is favorable for ensuring the stable operation of each controller and providing energy feedback, and simplifies the layout of the whole vehicle.
Drawings
FIG. 1 is a block diagram of a hydrogen fuel cell vehicle power system incorporating a 48V battery of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1, a power system of a hydrogen fuel cell vehicle with a 48V battery includes the following:
the system comprises a vehicle 48V electric device, a vehicle 12V/24V electric device, a 48V storage battery, a 12V/24V low-voltage storage battery, a bidirectional DC/DC, a high-voltage distribution box, a driving motor controller and a driving motor;
the 48V storage battery is electrically connected with a 48V electric device and a bidirectional DC/DC; the 12V/24V low-voltage storage battery is electrically connected with 12V/24V electric devices and bidirectional DC/DC electric devices of the whole vehicle;
the bidirectional DC/DC is electrically connected with the high-voltage distribution box; the high-voltage distribution box is electrically connected with the driving motor controller; the driving motor controller is electrically connected with the driving motor.
The 48V electric appliance of the whole vehicle comprises: a 48V device of a hydrogen fuel cell system, an air conditioner for a vehicle, a chassis active safety system and a motor feedback energy recovery system.
The hydrogen fuel cell system 48V device includes: hydrogen circulating pump, deionized water circulating pump, cold start electric heater, thermal management fan and air compressor machine.
The electric appliance for the whole vehicle 12V/24V comprises: the system comprises a VCU vehicle controller, an HCU hydrogen controller, an FCU fuel cell system controller, a PDU high-voltage distribution box, an MCU driving motor controller and a BCM vehicle body controller.
The system also includes a hydrogen fuel cell system high voltage portion electrically connected to the high voltage distribution box.
In the utility model, the motor feedback energy during service braking is recovered in a limited way through the 48V storage battery, the bidirectional DC/DC, the high-voltage distribution box and the driving motor controller, and the maximum allowable charging power of the storage battery is not exceeded.
In the utility model, the surplus power of the high-voltage part of the hydrogen fuel cell system (the energy generated by the fuel cell system but not consumed by a vehicle driving motor or other high-voltage components) is absorbed by the 48V storage battery in a limited way through the high-voltage distribution box and the bidirectional DC/DC, and on the other hand, the 48V storage battery in the limited way compensates the delay of the power response of the fuel cell system.
In the present invention, the low voltage, high power requirement is provided by the 48V battery upon start-up of the hydrogen fuel cell system.
In the utility model, the low-voltage and high-power requirements of an air conditioning system, a chassis active safety system and the like are provided by a 48V storage battery.
In the utility model, because 12V or 24V is the mainstream of low-voltage power supply of the current vehicle controller, the 12V/24V low-voltage storage battery is adopted to supply power to each controller on the vehicle, so that the compatibility is good.
The 12V/24V storage battery is not directly related to the 48V storage battery, so that the interference of voltage change on a 12V/24V system when the 48V loop is driven by high power can be well avoided, and the stable operation of each controller is favorably ensured.
Feeding back power to the device. The feedback energy is reduced to 48V through DCDC to charge the storage battery, namely, the energy is recovered.
The DC/DC is bidirectional DC, can boost the voltage of 48V into high voltage and output the high voltage to a bus, and can also reduce the voltage of the high voltage on the bus into 48V and 12V or 24V to charge a storage battery, and the working modes comprise three modes of constant voltage, constant current and constant power.
The utility model has the beneficial effects that: the system has good compatibility, is favorable for ensuring the stable operation of each controller and providing energy feedback, and simplifies the layout of the whole vehicle.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A hydrogen fuel cell vehicle power system including a 48V battery, characterized by: the method comprises the following steps:
the system comprises a vehicle 48V electric device, a vehicle 12V/24V electric device, a 48V storage battery, a 12V/24V low-voltage storage battery, a bidirectional DC/DC, a high-voltage distribution box, a driving motor controller and a driving motor;
the 48V storage battery is electrically connected with a 48V electric device and a bidirectional DC/DC; the 12V/24V low-voltage storage battery is electrically connected with 12V/24V electric devices and bidirectional DC/DC electric devices of the whole vehicle;
the bidirectional DC/DC is electrically connected with the high-voltage distribution box; the high-voltage distribution box is electrically connected with the driving motor controller; the driving motor controller is electrically connected with the driving motor.
2. A hydrogen fuel cell vehicle power system containing a 48V battery as claimed in claim 1, wherein: the 48V electric appliance of the whole vehicle comprises: a 48V device of a hydrogen fuel cell system, an air conditioner for a vehicle, a chassis active safety system and a motor feedback energy recovery system.
3. A hydrogen fuel cell vehicle power system containing a 48V battery as claimed in claim 2, wherein: the hydrogen fuel cell system 48V device includes: hydrogen circulating pump, deionized water circulating pump, cold start electric heater, thermal management fan and air compressor machine.
4. A hydrogen fuel cell vehicle power system containing a 48V battery as claimed in claim 1, wherein: the electric appliance for the whole vehicle 12V/24V comprises: the system comprises a VCU vehicle controller, an HCU hydrogen controller, an FCU fuel cell system controller, a PDU high-voltage distribution box, an MCU driving motor controller and a BCM vehicle body controller.
5. A hydrogen fuel cell vehicle power system containing a 48V battery as claimed in claim 1, wherein: the system also includes a hydrogen fuel cell system high voltage portion electrically connected to the high voltage distribution box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121265107.0U CN215793206U (en) | 2021-06-07 | 2021-06-07 | Hydrogen fuel cell vehicle power system containing 48V storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121265107.0U CN215793206U (en) | 2021-06-07 | 2021-06-07 | Hydrogen fuel cell vehicle power system containing 48V storage battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215793206U true CN215793206U (en) | 2022-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121265107.0U Active CN215793206U (en) | 2021-06-07 | 2021-06-07 | Hydrogen fuel cell vehicle power system containing 48V storage battery |
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| Country | Link |
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| CN (1) | CN215793206U (en) |
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2021
- 2021-06-07 CN CN202121265107.0U patent/CN215793206U/en active Active
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