CN110549911B - Distributed battery pack power supply system - Google Patents
Distributed battery pack power supply system Download PDFInfo
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- CN110549911B CN110549911B CN201910871005.4A CN201910871005A CN110549911B CN 110549911 B CN110549911 B CN 110549911B CN 201910871005 A CN201910871005 A CN 201910871005A CN 110549911 B CN110549911 B CN 110549911B
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- power
- voltage box
- batteries
- power supply
- battery pack
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
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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
- Y02T10/62—Hybrid vehicles
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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)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention relates to the technical field of energy systems, and discloses a distributed battery pack power supply system. The method comprises the following steps: the N first power batteries are connected with the first high-voltage box and supply power to the N driving controllers corresponding to the first high-voltage box through the first high-voltage box; the N second power batteries are connected with the second high-voltage box and supply power to the N driving controllers corresponding to the second high-voltage box through the second high-voltage box; the N first power batteries are in one-to-one correspondence with the N driving controllers, and the N first power batteries respectively supply power to the corresponding driving controllers directly; the N second power batteries correspond to the N drive controllers one by one, and the N second power batteries respectively supply power to the corresponding drive controllers directly; n first power battery and N second power battery pass through battery management system and CAN bus and intervene, drive controller and CAN bus intervene. The power supply setting mode of the scheme improves the reliability of a power supply system in the energy automobile, and is convenient and flexible to maintain and large in space utilization rate.
Description
Technical Field
The invention relates to the technical field of energy systems, in particular to a distributed battery pack power supply system.
Background
With the development of new energy automobiles, the power supply of the new energy automobiles becomes one of the main factors restricting the development of the new energy automobiles. The new energy automobile power supply mainly has the advantages of low storable electric energy, short endurance time, high battery replacement cost, low battery reliability and the like. In addition, many special vehicles are also increasingly powered by electrical energy. However, special vehicles have higher requirements on the reliability of the power supply system by the power system, and the design of the power supply system needs to be tested.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the problem of low reliability of a power supply system in the energy automobile, a distributed battery pack power supply system is provided.
The technical scheme adopted by the invention is as follows: a distributed battery pack power supply system comprises a vehicle control unit, a battery management system connected with the vehicle control unit through a CAN bus, N first power batteries, N second power batteries, a first high-voltage box and a second high-voltage box, wherein N is a natural number greater than 1; the N first power batteries are connected with the first high-voltage box and supply power to the N driving controllers corresponding to the first high-voltage box through the first high-voltage box; the N second power batteries are connected with the second high-voltage box and supply power to the N driving controllers corresponding to the second high-voltage box through the second high-voltage box; the N first power batteries correspond to the N driving controllers one by one, and the N first power batteries respectively supply power to the corresponding driving controllers directly; the N second power batteries correspond to the N drive controllers one by one, and the N second power batteries respectively supply power to the corresponding drive controllers directly; n first power battery and N second power battery pass through battery management system and intervene with the CAN bus, drive controller and CAN bus intervene.
Furthermore, the distributed battery pack power supply system further comprises a supplementary power supply unit, an engine is used as a supplementary power supply, the engine is involved with the CAN bus, and electric energy prepared by the engine is rectified and then supplies power to the driving controller through the supplementary power supply unit.
Further, when a certain first power battery or a certain second power battery in the distributed battery pack is damaged, the undamaged power batteries continue to supply power through the corresponding high-voltage box.
Further, N is 3, 4 or 5.
Furthermore, a standby power supply interface is reserved on the first high-voltage box and the second high-voltage box respectively, and the standby power supply interface supplies power for electric equipment of the whole vehicle except chassis power.
Furthermore, the vehicle control unit is also connected with an operation panel.
Compared with the prior art, the beneficial effects of adopting the technical scheme are as follows:
according to the technical scheme, the distributed power battery pack is adopted to supply power to the driving motor through the high-voltage box, the distributed power battery pack also provides driving force for the driving motor one to one, and electric energy obtained by the driving motor is more stable; the technical scheme of the invention can be applied to energy automobiles and other power systems containing a plurality of driving motors.
In the technical scheme of the invention, if a certain group of batteries in the distributed battery pack is damaged, the undamaged battery pack supplies power to the driving motor through the high-voltage box; therefore, even if one battery pack is damaged, the power supply condition of the driving motor of the automobile is not influenced, and the power supply reliability of the energy automobile is improved.
In the technical scheme of the invention, the engine is used as a supplementary (standby) power source and can be used for accelerating or providing power for the whole vehicle when the power of a battery system is insufficient.
The technical scheme of the invention has the advantages of convenient and flexible maintenance and large space utilization rate.
Drawings
Fig. 1 is a schematic diagram of a distributed battery pack power supply system according to an embodiment of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, a distributed battery pack power supply system includes a vehicle controller and a battery management system connected to the vehicle controller through a CAN bus, the invention also particularly relates to N first power batteries and N second power batteries, where N is 3 in this embodiment, a high-voltage box a and a high-voltage box B; the 3 first power batteries are respectively a power battery 1, a power battery 2 and a power battery 3, are all connected with the high-voltage box A, and supply power to 3 driving controllers corresponding to the high-voltage box A through the high-voltage box A; and the 3 second power batteries are respectively a power battery 4, a power battery 5 and a power battery 6, are all connected with the high-voltage box B, and supply power to 3 driving controllers corresponding to the high-voltage box B through the high-voltage box B. The power battery 1, the power battery 2, the power battery 3, the power battery 4, the power battery 5 and the power battery 6 respectively correspond to one driving controller, and power is directly supplied to the corresponding driving controllers, so that the reliability of the system is greatly improved; power battery 1, power battery 2, power battery 3, power battery 4, power battery 5, power battery 6 intervene through battery management system and CAN bus, drive controller intervenes with the CAN bus, and the corresponding driving motor of drive controller control.
The distribution positions of the high-pressure tank A and the high-pressure tank B are not the key points of the application, and the specific position distribution can be determined according to the design requirements of the automobile in the prior art. The size of the high-pressure tank is also variable, and the position of the high-pressure tank can be changed conveniently by considering the reserved space of the vehicle chassis. The drive controller corresponding to the high-voltage box A is a drive controller unit for supplying power to the high-voltage box A; and the drive controller unit is used for controlling the drive controller unit to supply power to the high-voltage box B corresponding to the high-voltage box B. In principle, the wiring between the driving units for supplying power to the high-voltage box A/high-voltage box B side is the most convenient design basis for determining whether the driving controller is supplied with power by the high-voltage box A or the high-voltage box B. It is possible that the high voltage tank, which is closer to the drive controller, powers the drive controller.
Preferably, the distributed battery pack power supply system further comprises a supplement/standby power supply unit, the engine is used as a supplement/standby power supply, the engine is involved with the CAN bus, electric energy prepared by the engine is rectified and then supplies power to the drive controller through the supplement power supply unit, and the supplement/standby power supply unit CAN be used for accelerating or providing power for the whole vehicle when the electric power of the battery system is insufficient.
Preferably, the high-voltage box A and the high-voltage box B are respectively provided with a standby power supply interface for supplying power to the electric equipment of the whole vehicle except the chassis power.
The invention provides a triple power guarantee: (1) the distributed battery packs provide driving force for the driving motor one to one, so that the power supply stability of the driving motor is improved; (2) when a certain first power battery or a certain second power battery in the distributed battery pack is damaged, the undamaged power batteries continue to supply power through the corresponding high-voltage boxes. Therefore, even if one power battery is broken, such as the power battery 6, the high-voltage box B can continuously supply power to the corresponding drive controller of the power battery 6. And the supplementary/backup power supply unit can also be switched in at a later time when needed. (3) The engine is used as a supplementary (standby) power source and is supplied with supplementary (standby) power when needed.
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed. Those skilled in the art to which the invention pertains will appreciate that insubstantial changes or modifications can be made without departing from the spirit of the invention as defined by the appended claims.
Claims (4)
1. A distributed battery pack power supply system comprises a vehicle control unit and a battery management system connected with the vehicle control unit through a CAN bus, and is characterized by further comprising N first power batteries, N second power batteries, a first high-voltage box and a second high-voltage box, wherein N is a natural number greater than 1; the N first power batteries are connected with the first high-voltage box and supply power to the N driving controllers corresponding to the first high-voltage box through the first high-voltage box; the N second power batteries are connected with the second high-voltage box and supply power to the N driving controllers corresponding to the second high-voltage box through the second high-voltage box; the N first power batteries correspond to the N driving controllers one by one, and the N first power batteries respectively supply power to the corresponding driving controllers directly; the N second power batteries correspond to the N drive controllers one by one, and the N second power batteries respectively supply power to the corresponding drive controllers directly; the N first power batteries and the N second power batteries are intervened with a CAN bus through a battery management system, and the drive controller is intervened with the CAN bus; when a certain first power battery or a certain second power battery in the distributed battery pack is damaged, the undamaged power batteries continue to supply power through the corresponding high-voltage boxes; the distributed battery pack power supply system further comprises a supplementary power supply unit, an engine is used as a supplementary power supply, the engine is involved with the CAN bus, electric energy prepared by the engine is rectified and then supplied to the drive controller through the supplementary power supply unit, and the supplementary power supply unit CAN be used for accelerating or providing power for the whole vehicle when the electric power of the battery system is insufficient.
2. The distributed battery pack power supply system of claim 1, wherein N is 3, 4, or 5.
3. The distributed battery pack power supply system according to claim 1, wherein the first high-voltage box and the second high-voltage box are respectively provided with a standby power supply interface for supplying power to electric equipment of the whole vehicle except for chassis power.
4. The distributed battery pack power supply system according to claim 1, wherein the vehicle control unit is further connected with an operation panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910871005.4A CN110549911B (en) | 2019-09-16 | 2019-09-16 | Distributed battery pack power supply system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910871005.4A CN110549911B (en) | 2019-09-16 | 2019-09-16 | Distributed battery pack power supply system |
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| Publication Number | Publication Date |
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| CN110549911A CN110549911A (en) | 2019-12-10 |
| CN110549911B true CN110549911B (en) | 2020-11-03 |
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| CN201910871005.4A Active CN110549911B (en) | 2019-09-16 | 2019-09-16 | Distributed battery pack power supply system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111055845B (en) * | 2019-12-30 | 2021-11-30 | 清华大学 | Vehicle control method and device, vehicle and storage medium |
| CN111806234B (en) * | 2020-07-10 | 2021-11-16 | 的卢技术有限公司 | Distributed battery power supply system and power supply method |
| CN114312267B (en) | 2021-01-28 | 2024-04-09 | 华为数字能源技术有限公司 | Vehicle-mounted distributed power supply system, vehicle-mounted power supply control method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6443743B2 (en) * | 2014-12-25 | 2018-12-26 | 三菱自動車工業株式会社 | Electric vehicle |
| CN108081970A (en) * | 2018-01-05 | 2018-05-29 | 江苏悦达集团有限公司 | A kind of dual power source battery auxiliary system for electric vehicle |
| CN208530306U (en) * | 2018-05-11 | 2019-02-22 | 江西凯马百路佳客车有限公司 | A kind of pure electric car control system of double dynamical battery |
| CN108674410B (en) * | 2018-06-28 | 2020-08-07 | 北京航天发射技术研究所 | Distributed hybrid power system and control method thereof |
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Address after: No. 269, North Hupan Road, zone B, Tianfu New Economic Industrial Park, Tianfu New District, Chengdu, Sichuan Province Applicant after: Aerospace Science, engineering, Microelectronics System Research Institute Co., Ltd Address before: 610000 Sichuan city of Chengdu province Tianfu Tianfu Avenue South Huayang Street No. 846 Applicant before: Chengdu Aerospace Science and technology Microelectronics System Research Institute Co., Ltd. |
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