CN113771692A - Vehicle starting power supply SOC management system - Google Patents
Vehicle starting power supply SOC management system Download PDFInfo
- Publication number
- CN113771692A CN113771692A CN202110977692.5A CN202110977692A CN113771692A CN 113771692 A CN113771692 A CN 113771692A CN 202110977692 A CN202110977692 A CN 202110977692A CN 113771692 A CN113771692 A CN 113771692A
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- CN
- China
- Prior art keywords
- power supply
- vehicle
- dcdc
- starting
- power
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Classifications
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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
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
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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)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a vehicle starting power supply SOC management system, which comprises a starting power supply, a DCDC calculation control unit and a low-voltage power accessory, wherein the DCDC calculation control unit is used for calculating the power supply of a vehicle; the starting power supply adopts a lithium battery as the starting power supply to carry out low-voltage power supply; the DCDC calculation control unit and the starting power supply can mutually output power supplies and simultaneously output power to the low-voltage electric accessories under the condition that the vehicle power is large, and the DCDC charges the starting power supply under the condition that the vehicle power is small or the vehicle is in a charging state; the low voltage power accessory is responsible for consuming power for the startup power supply and the DCDC output. According to the invention, the lithium battery is used as a starting power supply to replace a storage battery for low-voltage power supply, and meanwhile, the power can be output, partial power of the DCDC is compensated, and the power of the DCDC is reduced, so that the problems of long-time parking of a vehicle and power shortage of the starting power supply are solved.
Description
Technical Field
The invention relates to the technical field of vehicle power supplies, in particular to a vehicle starting power supply SOC management system.
Background
At present, along with the popularization of electric automobiles, more and more energy storage modes enter vehicles, partial mechanical and hydraulic structures on the vehicles are replaced by electronic structures, structures needing low-voltage power supply on the vehicles are more and more, and the vehicles on the market adopt storage batteries as starting power supplies to carry out low-voltage power supply, wherein the electric energy of the storage batteries is supplemented by DCDC; the storage battery is only used for low-voltage power supply, when the vehicle is parked, the storage battery cannot be used for power supplement, and the feeding condition can occur under the condition of overlong parking time of the vehicle, so that the service life of the starting power supply is influenced.
Disclosure of Invention
In view of the above technical problems in the related art, the present invention provides a system for managing a vehicle starting power supply SOC, which can overcome the above disadvantages of the prior art methods.
In order to achieve the technical purpose, the technical scheme of the invention is realized as follows:
a vehicle starting power supply SOC management system comprises a starting power supply, a DCDC calculation control unit and a low-voltage power utilization accessory, wherein,
the starting power supply adopts a lithium battery as a starting power supply to carry out low-voltage power supply;
the DCDC calculation control unit and the starting power supply can mutually output power supplies under the condition of large vehicle power and output power to low-voltage electric accessories at the same time, and the DCDC is used for charging the starting power supply under the condition of small vehicle power or vehicle charging state;
the low voltage power accessory is responsible for consuming power for the startup power supply and the DCDC output.
And further, starting the power supply to detect, calculate and monitor the SOC of the lithium battery in real time.
Further, under the running state of the vehicle, the starting power supply calculates the SOC of the lithium battery in real time and controls the starting power supply to output power in cooperation with the DCDC requirement; and under the parking state of the vehicle, the power supply is started to periodically calculate the SOC of the lithium battery, and when the SOC is lower than a calibrated value, power is supplemented.
Further, when the SOC of the lithium battery is lower than a calibrated value, the DCDC calculation control unit is turned on to supplement the power to 100%.
Further, in the parking state, the DCDC calculation control unit of the vehicle only outputs the power compensation to the starting power supply, and the starting power supply is in the power storage state and does not output the power supply.
The invention has the beneficial effects that: through adopting the lithium cell as starting power supply, replace the accumulator jar and carry out the low pressure power supply, can output power simultaneously, compensate DCDC partial power, reduce DCDC's power simultaneously to solve the long-time parking of vehicle, starting power insufficient voltage problem.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic block diagram of a vehicle power-up management system of a vehicle power supply system SOC according to an embodiment of the invention.
Fig. 2 is a schematic diagram of a module structure of a vehicle startup power supply SOC management system according to an embodiment of the invention when the vehicle power is low.
Fig. 3 is a schematic structural diagram of a module of a vehicle starting power supply SOC management system in a vehicle parking state according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention, and for the convenience of understanding the above technical solutions of the present invention, the above technical solutions of the present invention are described in detail below by specific use modes.
The vehicle starting power supply SOC management system comprises a starting power supply, a DCDC calculation control unit and low-voltage power accessories.
The starting power supply adopts a lithium battery as a starting power supply to carry out low-voltage power supply; when the SOC of the lithium battery is lower than 30% of the calibrated SOC, the DCDC calculation control unit is turned on to supplement the power to 100%, and the starting power supply is prevented from being damaged due to power shortage; and starting the power supply to detect, calculate and monitor the SOC of the lithium battery in real time.
As shown in fig. 1-2, the DCDC calculation control unit and the starting power supply mutually output power and simultaneously output power to the low-voltage electric accessories when the vehicle power is large, and the DCDC charges the starting power supply when the vehicle power is small or the vehicle is in a charging state.
Under the running state of the vehicle, the starting power supply calculates the SOC of the lithium battery in real time and controls the starting power supply to output power in cooperation with the DCDC requirement; as shown in fig. 3, in the parking state of the vehicle, the starting power supply periodically calculates the SOC of the lithium battery, and when the SOC is lower than a calibrated value, the power supply is compensated.
The low voltage power accessory is responsible for consuming power for the startup power supply and the DCDC output.
In summary, according to the technical scheme of the invention, the lithium battery is used as the starting power supply to replace the storage battery for low-voltage power supply, and meanwhile, the power can be output to compensate partial power of the DCDC, and the power of the DCDC is reduced, so that the problems of long-time parking of the vehicle and insufficient power of the starting power supply are solved.
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 invention, 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 vehicle starting power supply SOC management system is characterized by comprising a starting power supply, a DCDC calculation control unit and a low-voltage power accessory, wherein,
the starting power supply adopts a lithium battery as a starting power supply to carry out low-voltage power supply;
the DCDC calculation control unit and the starting power supply can mutually output power supplies under the condition of large vehicle power and output power to low-voltage electric accessories at the same time, and the DCDC is used for charging the starting power supply under the condition of small vehicle power or vehicle charging state;
the low voltage power accessory is responsible for consuming power for the startup power supply and the DCDC output.
2. The vehicle starting power supply SOC management system of claim 1, wherein the starting power supply detects, calculates and monitors the SOC of the lithium battery in real time.
3. The vehicle starting power supply SOC management system of claim 2, wherein in a vehicle driving state, the starting power supply calculates the SOC of the lithium battery in real time and controls the starting power supply to output power in coordination with DCDC requirements; and under the parking state of the vehicle, the power supply is started to periodically calculate the SOC of the lithium battery, and when the SOC is lower than a calibrated value, power is supplemented.
4. The vehicle starting power supply SOC management system of claim 3, wherein when the SOC of the lithium battery is lower than a calibrated value, the power supply is compensated to 100% by turning on a DCDC calculation control unit.
5. The SOC management system for vehicle starting power supply according to claim 3, wherein in the parking state, the DCDC calculation control unit of the vehicle only outputs the power compensation to the starting power supply, and the starting power supply is in the power storage state and does not output the power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110977692.5A CN113771692A (en) | 2021-08-24 | 2021-08-24 | Vehicle starting power supply SOC management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110977692.5A CN113771692A (en) | 2021-08-24 | 2021-08-24 | Vehicle starting power supply SOC management system |
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| Publication Number | Publication Date |
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| CN113771692A true CN113771692A (en) | 2021-12-10 |
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| CN202110977692.5A Pending CN113771692A (en) | 2021-08-24 | 2021-08-24 | Vehicle starting power supply SOC management system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107458229A (en) * | 2017-07-21 | 2017-12-12 | 王震 | Automobile-used low-voltage power supply system containing DC DC converters |
| CN209505468U (en) * | 2018-12-24 | 2019-10-18 | 芜湖佳景科技有限公司 | Low tension battery mends electric system |
| US20190359079A1 (en) * | 2018-05-23 | 2019-11-28 | Toyota Jidosha Kabushiki Kaisha | Power supply device |
| CN111200174A (en) * | 2020-01-09 | 2020-05-26 | 湖南行必达网联科技有限公司 | Vehicle and lithium ion battery starting power supply system thereof |
| CN212654235U (en) * | 2020-05-29 | 2021-03-05 | 奇瑞商用车（安徽）有限公司 | Charging control system of low-voltage storage battery |
-
2021
- 2021-08-24 CN CN202110977692.5A patent/CN113771692A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107458229A (en) * | 2017-07-21 | 2017-12-12 | 王震 | Automobile-used low-voltage power supply system containing DC DC converters |
| US20190359079A1 (en) * | 2018-05-23 | 2019-11-28 | Toyota Jidosha Kabushiki Kaisha | Power supply device |
| CN209505468U (en) * | 2018-12-24 | 2019-10-18 | 芜湖佳景科技有限公司 | Low tension battery mends electric system |
| CN111200174A (en) * | 2020-01-09 | 2020-05-26 | 湖南行必达网联科技有限公司 | Vehicle and lithium ion battery starting power supply system thereof |
| CN212654235U (en) * | 2020-05-29 | 2021-03-05 | 奇瑞商用车（安徽）有限公司 | Charging control system of low-voltage storage battery |
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