CN110901467A - Control method for seamless switching of high-voltage loop of pure electric vehicle - Google Patents
Control method for seamless switching of high-voltage loop of pure electric vehicle Download PDFInfo
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- CN110901467A CN110901467A CN201911015799.0A CN201911015799A CN110901467A CN 110901467 A CN110901467 A CN 110901467A CN 201911015799 A CN201911015799 A CN 201911015799A CN 110901467 A CN110901467 A CN 110901467A
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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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- 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in 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
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
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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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- 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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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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
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Abstract
The technical scheme adopted by the invention is to provide a control method for seamlessly switching a high-voltage loop of a pure electric vehicle. The invention determines whether the internal resistance of the battery pack is increased due to the over-low temperature by comparing the difference value of the total voltage of the battery pack and the charging voltage of the charging equipment, thereby acquiring whether the battery pack is in a state suitable for charging and avoiding the inaccurate measurement caused by the internal measurement of the cell temperature of each battery. The invention can generate alarm information in time when the PTC heating equipment fails and send the alarm information to the mobile communication equipment of the user in time through the vehicle-mounted T-box to remind the user to prepare in time. According to the invention, intelligent on-off of each loop and the charging loop of the charging equipment is realized through a whole vehicle control system and a Battery Management System (BMS), so that seamless switching of a high-voltage loop of the battery of the electric vehicle is realized, the working stability of a high-voltage load is ensured, and the high coupling risk of each controller control strategy is reduced to a great extent.
Description
Technical Field
The invention relates to the field of battery charging of electric vehicles, in particular to a control method for seamless switching of a high-voltage loop of a pure electric vehicle under a low-temperature condition.
Background
With the high-speed development of science and technology, the development direction of automobiles also starts to be slowly turned to pure electric-driven automobiles by traditional fuel engine-driven automobiles, and the market direction of automobiles in the future will be developed towards the direction of environmental protection and no pollution of electric automobiles. The emergence of a large number of new electric automobiles also enables the battery technology of the automobiles to be remarkably developed. At present, because of the limitation of a battery structure technology, a pure electric vehicle is powered by a battery pack assembly, and the battery pack assembly has good charging performance in a normal-temperature environment, so that the daily requirements of users of the pure electric vehicle can be normally met; however, in a low-temperature environment, the charging capability of the battery pack assembly system is limited by the charging capability of a single battery cell, and the charging capability of the battery cell is reduced due to the reduction of the internal temperature of the battery pack, and in a limit situation, the battery cell is not allowed to be charged, which causes that a user cannot normally use the vehicle.
In order to effectively solve the charging problem of the existing electric vehicle in some low-temperature environments, a patent of "method and apparatus for rapidly charging an electric vehicle" as in patent application No. CN201610363113.7 has appeared, which is to directly detect the temperature of a battery cell during charging and to heat the temperature of the battery cell to a state convenient for rapid charging through a heating device. However, the patents still have some problems, and 1, when the patents are switched to a quick charging state, a high-voltage interruption condition occurs, so that the power source switching cannot be sensed by a high-voltage load of a front cabin, and therefore each controller of a charging loop can have a serious high coupling problem, and the stability of an ECU of each electronic device of a whole vehicle control system of an electric vehicle is reduced. 2. This kind of patent lacks diagnosis and the early warning to heating device to can't in time remind the user when heating device is out of order, thereby make and be used for not knowing in advance and cause a large amount of time extravagant. 3. Because current battery technical problem, electric automobile often is supplied power by a plurality of battery packages, and the total temperature of judging the battery package according to the electric core temperature of several battery packages simply can have great error to can have some battery packages and not reach the condition emergence that the best charging temperature just begins to charge, cause a large amount of wastes, can harm the life of partial battery simultaneously.
Therefore, a control method for controlling a seamless switching high-voltage circuit of a pure electric vehicle, which can charge a battery pack at a high speed in a low-temperature environment, can intelligently adjust the charging state of the battery pack, can realize seamless switching between a heating circuit and a charging circuit, can reduce the damage of low-temperature charging to the service life of the battery, can ensure the stability of each electronic component of the electric vehicle, and can reduce the problem of high coupling between each electronic component and the battery, becomes necessary.
Disclosure of Invention
In order to effectively solve the technical problem, the invention provides a control method for seamlessly switching a high-voltage loop of a pure electric vehicle.
The invention provides a control method for seamlessly switching a high-voltage loop of a pure electric vehicle, which is used for enabling the pure electric vehicle to recover the charging function by controlling the high-voltage loop of a PTC heating device to be switched under a low-temperature environment and comprises the following steps: s1, detecting the electric quantity of the battery pack through a battery management system of the target vehicle; s2, when the electric quantity of the battery pack is detected to be lower than a first preset electric quantity value, the battery management system sends a compensation signal to the whole vehicle control system, and the step S3 is executed; s3, detecting whether the charging voltage of the charging equipment connected with the battery pack loop is higher than the total voltage of the battery pack and the difference value between the charging voltage and the total voltage of the battery pack is larger than a first voltage value; s4, when the condition in S3 is met, a first circuit heating signal is sent to the whole vehicle control system, and then a loop of the PTC heating device is switched to be connected with a high-voltage loop of the charging device, so that the PTC heating device is electrified and heats the battery pack at a certain power; s5, detecting whether the difference value between the charging voltage of the charging equipment and the total battery pack voltage is reduced in a first time period, and if the difference value is reduced, executing a step S6; s6, when the difference value between the charging voltage of the charging equipment and the total voltage of the battery pack is detected to be smaller than a second voltage value, the second voltage value is smaller than the first voltage value, the circuit of the PTC heating equipment is switched to be disconnected with the high-voltage circuit of the charging equipment, meanwhile, the charging circuit of the battery pack is switched to be connected with the high-voltage circuit of the charging equipment, and the battery pack starts to be charged according to a certain rule; and S7, when the battery management system detects that the battery pack is full of electricity, sending a charging stop signal to the whole vehicle control system, and further disconnecting the charging loop of the battery pack from the high-voltage loop of the charging equipment through the VCU.
Further, the first preset electric quantity value is 90% of the electric quantity value when the battery pack is fully charged.
Further, the step S1 of "detecting the electric quantity of the battery pack" specifically includes: s11, acquiring the temperature of the battery pack; s12, the battery management system acquires a comparison table of the battery cell voltage and the capacity of the battery pack at the temperature from the storage device according to the battery pack temperature; and S13, detecting the current battery pack voltage, and determining the capacity of the battery pack and the current residual capacity by combining the comparison table.
Further, the first voltage value in step S3 is 5V.
Further, in step S5, the first period of time is preferably 5 minutes.
Further, before the charging loop of the battery pack is switched to be connected with the high-voltage loop of the charging equipment, the pre-charging loop of the battery pack is connected with the high-voltage loop of the charging equipment, so that the battery management system can obtain the difference value between the charging voltage of the charging equipment and the total voltage of the battery pack through the pre-charging loop; when the charging loop of the battery pack is switched to be connected with the high-voltage loop of the charging equipment, the pre-charging loop of the battery pack can be automatically disconnected with the high-voltage loop of the charging equipment.
Further, in step S5, if it is detected that the difference between the charging voltage of the charging device and the total voltage of the battery pack is not decreased within the first time period, the battery management system generates a first power adjustment command, sends the power adjustment command to the vehicle control system, and increases the power of the PTC heating device through the vehicle control system until the difference between the charging voltage of the charging device and the total voltage of the battery pack is decreased.
Further, when the power of the PTC heating device is adjusted to the maximum value by the whole vehicle control system, and the difference value between the charging voltage of the charging device and the total voltage of the battery pack is not reduced, it is determined that the PTC heating device is damaged or the ambient temperature is too low, and then first alarm information is generated.
Furthermore, the whole vehicle control system can also send the first alarm information to the mobile communication equipment of the vehicle owner through the vehicle-mounted T-box.
Further, the step S6 of "starting charging the battery pack with a certain rule" specifically includes: s61, acquiring the electric quantity of the battery pack in real time, judging whether the electric quantity of the battery pack reaches a first preset electric quantity value, and if not, switching a charging loop of the battery pack to a quick charging loop; and S62, when the electric quantity of the battery pack reaches a first preset electric quantity value, switching the charging loop of the battery pack to a slow charging loop.
The invention determines whether the internal resistance of the battery pack is increased due to the over-low temperature by comparing the difference value of the total voltage of the battery pack and the charging voltage of the charging equipment, thereby acquiring whether the battery pack is in a state suitable for charging and avoiding the inaccurate measurement caused by the internal measurement of the cell temperature of each battery. The invention can generate alarm information in time when the PTC heating equipment fails and send the alarm information to the mobile communication equipment of the user in time through the vehicle-mounted T-box to remind the user to prepare in time. According to the invention, intelligent on-off of each loop and the charging loop of the charging equipment is realized through a whole vehicle control system and a Battery Management System (BMS), so that seamless switching of a high-voltage loop of the battery of the electric vehicle is realized, the working stability of a high-voltage load is ensured, and the high coupling risk of each controller control strategy is reduced to a great extent.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a diagram of information interaction between various interaction objects of the present invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention and/or the technical solutions in the prior art, the following will describe specific embodiments of the present invention with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings and embodiments can be obtained from them without inventive effort. In addition, the term "orientation" merely indicates a relative positional relationship between the respective members, not an absolute positional relationship.
At present, when external temperature crosses lowly, the resistance of most pure electric vehicles's group battery can the grow and increase the battery power loss, and ionic motion weakens in the battery simultaneously, and at this moment it can make charging efficiency reduce greatly to charge to it with primary current, so promotes the electric core temperature of group battery to normal charging temperature and can effectively improve charging efficiency, protects the life of group battery simultaneously.
As shown in fig. 1 and 2, the present invention provides a control method for seamlessly switching a high-voltage circuit of a pure electric vehicle, which is used for enabling the pure electric vehicle to recover a charging function by controlling the high-voltage circuit of a PTC heating device to switch in a low-temperature environment. The present invention specifically includes steps S1 to S7.
Wherein step S1: the amount of charge of the battery pack is detected by a Battery Management System (BMS) of the target vehicle.
Step S1 specifically includes: s11, acquiring the temperature of the battery pack; s12, the battery management system acquires a comparison table of the battery cell voltage and the capacity of the battery pack at the temperature from the storage device according to the battery pack temperature; and S13, detecting the current battery pack voltage, and determining the capacity of the battery pack and the current residual capacity by combining the comparison table. Since the temperature has a large influence on the capacity of the battery pack, the current capacity of the battery pack can be more accurately determined according to the look-up table.
S2: when detecting that the electric quantity of the battery pack is lower than the first preset electric quantity value, the battery management system sends a compensation signal to the vehicle control system, and step S3 is executed.
The first preset electric quantity value is 90% of the electric quantity value when the battery pack is fully charged, 90% of the electric quantity is the optimal electric quantity for using the existing battery, and quick charging can be realized when the electric quantity is lower than 90%. When the electric quantity is more than 90%, the ion concentration in the battery is too high, and only slow charging can be realized.
And S3, detecting whether the charging voltage of the charging equipment connected with the battery pack loop is higher than the total battery pack pressure and the difference value between the charging voltage and the total battery pack pressure is larger than a first voltage value.
The first voltage value is 5V, and the resistance of the battery pack is increased due to the temperature reduction, so that the voltage difference between the charging device and the battery pack is increased, and the voltage difference between the charging device and the battery pack can be used for judging the temperature condition of the battery pack.
And S4, when the condition in S3 is met, sending a first circuit heating signal to the whole vehicle control system, and further switching the circuit of the PTC heating device to be connected with the high-voltage circuit of the charging device, so that the PTC heating device is electrified and heats the battery pack at a certain power.
Wherein the switching of the loops is realized by controlling the relays of the loops. Before a charging loop of the battery pack is switched to be connected with a high-voltage loop of the charging equipment, a pre-charging loop of the battery pack is connected with the high-voltage loop of the charging equipment, and a Battery Management System (BMS) can acquire a difference value between the charging voltage of the charging equipment and the total voltage of the battery pack through the pre-charging loop; when the charging loop of the battery pack is switched to be connected with the high-voltage loop of the charging equipment, the pre-charging loop of the battery pack can be automatically disconnected with the high-voltage loop of the charging equipment.
And S5, detecting whether the difference value between the charging voltage of the charging equipment and the total battery pack voltage is reduced in the first time period, and if so, executing the step S6.
And if the difference value between the charging voltage of the charging equipment and the total voltage of the battery pack is not reduced in the first time period, generating a first power adjusting instruction by the battery management system, sending the power adjusting instruction to a vehicle control system, and increasing the power of the PTC heating equipment by the vehicle control system until the difference value between the charging voltage of the charging equipment and the total voltage of the battery pack is reduced.
When the power of the PTC heating equipment is adjusted to the maximum value by the whole vehicle control system, and the difference value between the charging voltage of the charging equipment and the total voltage of the battery pack is not reduced, the PTC heating equipment is determined to be damaged or the ambient temperature is too low, and then first alarm information is generated. The vehicle control system can also send the first alarm information to vehicle owner's mobile communication equipment such as mobile phone, flat panel and the like through the vehicle-mounted T-box, so that the vehicle owner can respond in time.
And S6, when the difference value between the charging voltage of the charging equipment and the total voltage of the battery pack is detected to be smaller than a second voltage value, the second voltage value is smaller than the first voltage value, the circuit of the PTC heating equipment is switched to be disconnected with the high-voltage circuit of the charging equipment, the charging circuit of the battery pack is switched to be connected with the high-voltage circuit of the charging equipment, and the battery pack starts to be charged according to a certain rule.
The step S6 of "starting to charge the battery pack according to a certain rule" specifically includes: s61, acquiring the electric quantity of the battery pack in real time, judging whether the electric quantity of the battery pack reaches a first preset electric quantity value, and if not, switching a charging loop of the battery pack to a quick charging loop; and S62, when the electric quantity of the battery pack reaches a first preset electric quantity value, switching the charging loop of the battery pack to a slow charging loop.
And S7, when the battery management system detects that the battery pack is full of electricity, sending a charging stop signal to the whole vehicle control system, and further disconnecting the charging loop of the battery pack from the high-voltage loop of the charging equipment through the VCU.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. The control method for seamlessly switching the high-voltage loop of the pure electric vehicle is characterized by being used for enabling the pure electric vehicle to recover the charging function by controlling the high-voltage loop of the PTC heating equipment to be switched under the low-temperature environment, and comprises the following steps of: s1, detecting the electric quantity of the battery pack through a battery management system of the target vehicle; s2, when the electric quantity of the battery pack is detected to be lower than a first preset electric quantity value, the battery management system sends a compensation signal to the whole vehicle control system, and the step S3 is executed; s3, detecting whether the charging voltage of the charging equipment connected with the battery pack loop is higher than the total voltage of the battery pack and the difference value between the charging voltage and the total voltage of the battery pack is larger than a first voltage value; s4, when the condition in S3 is met, a first circuit heating signal is sent to the whole vehicle control system, and then a loop of the PTC heating device is switched to be connected with a high-voltage loop of the charging device, so that the PTC heating device is electrified and heats the battery pack at a certain power; s5, detecting whether the difference value between the charging voltage of the charging equipment and the total battery pack voltage is reduced in a first time period, and if the difference value is reduced, executing a step S6; s6, when the difference value between the charging voltage of the charging equipment and the total voltage of the battery pack is detected to be smaller than a second voltage value, the second voltage value is smaller than the first voltage value, the circuit of the PTC heating equipment is switched to be disconnected with the high-voltage circuit of the charging equipment, meanwhile, the charging circuit of the battery pack is switched to be connected with the high-voltage circuit of the charging equipment, and the battery pack starts to be charged according to a certain rule; and S7, when the battery management system detects that the battery pack is full of electricity, sending a charging stop signal to the whole vehicle control system, and further disconnecting the charging loop of the battery pack from the high-voltage loop of the charging equipment through the VCU.
2. The method according to claim 1, wherein the first preset electric quantity value is 90% of an electric quantity value when the battery pack is fully charged.
3. The method for controlling seamless switching of the high-voltage circuit of the pure electric vehicle according to claim 1, wherein the step S1 of "detecting the electric quantity of the battery pack" specifically includes: s11, acquiring the temperature of the battery pack; s12, the battery management system acquires a comparison table of the battery cell voltage and the capacity of the battery pack at the temperature from the storage device according to the battery pack temperature; and S13, detecting the current battery pack voltage, and determining the capacity of the battery pack and the current residual capacity by combining the comparison table.
4. The control method for seamlessly switching the high-voltage loop of the pure electric vehicle according to claim 1, wherein the first voltage value in step S3 is 5V.
5. The control method for seamlessly switching the high-voltage circuit of the pure electric vehicle according to claim 1, wherein in step S5, the first time period is preferably 5 minutes.
6. The control method for seamlessly switching the high-voltage loop of the pure electric vehicle as claimed in claim 1, characterized in that: before a charging loop of the battery pack is switched to be connected with a high-voltage loop of the charging equipment, a pre-charging loop of the battery pack is connected with the high-voltage loop of the charging equipment, and then the battery management system can obtain a difference value between the charging voltage of the charging equipment and the total voltage of the battery pack through the pre-charging loop; when the charging loop of the battery pack is switched to be connected with the high-voltage loop of the charging equipment, the pre-charging loop of the battery pack can be automatically disconnected with the high-voltage loop of the charging equipment.
7. The method according to claim 1, wherein in step S5, if it is detected that the difference between the charging voltage of the charging device and the total voltage of the battery pack is not decreased in the first time period, the battery management system generates a first power adjustment command, sends the power adjustment command to the vehicle control system, and adjusts the power of the PTC heating device to be higher by the vehicle control system until the difference between the charging voltage of the charging device and the total voltage of the battery pack is decreased.
8. The control method for seamlessly switching the high-voltage loop of the pure electric vehicle as claimed in claim 1 or 7, wherein: when the vehicle control system increases the power of the PTC heating device to the maximum value, the power of the PTC heating device is adjusted to the maximum value
And if the difference value between the charging voltage of the charging equipment and the total voltage of the battery pack is not reduced, determining that the PTC heating equipment is damaged or the ambient temperature is too low, and further generating first alarm information.
9. The control method for seamlessly switching the high-voltage loop of the pure electric vehicle as claimed in claim 8, wherein: the whole vehicle control system can also send the first alarm information to the mobile communication equipment of the vehicle owner through the vehicle-mounted T-box.
10. The method according to claim 1, wherein the step S6 of "starting to charge the battery pack according to a certain rule" includes: s61, acquiring the electric quantity of the battery pack in real time, judging whether the electric quantity of the battery pack reaches a first preset electric quantity value, and if not, switching a charging loop of the battery pack to a quick charging loop; and S62, when the electric quantity of the battery pack reaches a first preset electric quantity value, switching the charging loop of the battery pack to a slow charging loop.
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| CN201911015799.0A CN110901467A (en) | 2019-10-24 | 2019-10-24 | Control method for seamless switching of high-voltage loop of pure electric vehicle |
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| CN201911015799.0A CN110901467A (en) | 2019-10-24 | 2019-10-24 | Control method for seamless switching of high-voltage loop of pure electric vehicle |
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| CN101212847A (en) * | 2006-12-31 | 2008-07-02 | 海尔集团公司 | Heating control circuit and heating electrical appliance |
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| CN103682508A (en) * | 2013-11-26 | 2014-03-26 | 北京空间飞行器总体设计部 | Method for determining electric charge state of spacecraft Li-ion (Lithium-ion) storage battery |
| CN106740159A (en) * | 2017-01-23 | 2017-05-31 | 风度（常州）汽车研发院有限公司 | On-vehicle battery heating system, on-vehicle battery heating means and vehicle |
| WO2019191530A1 (en) * | 2018-03-29 | 2019-10-03 | Rensselaer Polytechnic Institute | Methods for self-heating induced healing of metal dendrites |
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2019
- 2019-10-24 CN CN201911015799.0A patent/CN110901467A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101212847A (en) * | 2006-12-31 | 2008-07-02 | 海尔集团公司 | Heating control circuit and heating electrical appliance |
| CN103545569A (en) * | 2012-07-17 | 2014-01-29 | 比亚迪股份有限公司 | Battery heating control method and device |
| CN103682508A (en) * | 2013-11-26 | 2014-03-26 | 北京空间飞行器总体设计部 | Method for determining electric charge state of spacecraft Li-ion (Lithium-ion) storage battery |
| CN106740159A (en) * | 2017-01-23 | 2017-05-31 | 风度（常州）汽车研发院有限公司 | On-vehicle battery heating system, on-vehicle battery heating means and vehicle |
| WO2019191530A1 (en) * | 2018-03-29 | 2019-10-03 | Rensselaer Polytechnic Institute | Methods for self-heating induced healing of metal dendrites |
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