CN112311071A - Method and device for protecting battery pack of hybrid vehicle - Google Patents
Method and device for protecting battery pack of hybrid vehicle Download PDFInfo
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- CN112311071A CN112311071A CN202010054836.5A CN202010054836A CN112311071A CN 112311071 A CN112311071 A CN 112311071A CN 202010054836 A CN202010054836 A CN 202010054836A CN 112311071 A CN112311071 A CN 112311071A
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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
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
- H02J7/1415—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle with a generator driven by a prime mover other than the motor of a vehicle
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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
-
- 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]
- B60L58/13—Maintaining the SoC within a determined range
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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
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
- H02J7/1446—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle in response to parameters of a vehicle
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to 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)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to the technical field of vehicles, and provides a method and a device for protecting a battery pack of a hybrid vehicle. The method comprises the following steps: receiving a charging request signal at least once, wherein the charging request signal is generated when the hybrid vehicle is in a dormant state and the battery management system judges that the charge state of the battery pack is less than or equal to a first preset value, and the battery management system judges the charge state of the battery pack once every first preset time; responding to the charging request signal, sending an engine starting request to a user, and controlling a battery management system to stop judging the charge state of the battery pack at intervals of first preset time until the number of times of sending the engine starting request reaches a preset number; upon receiving a start engine signal from a user, the engine is controlled to start to charge the battery pack. The invention can detect and charge the battery pack under proper conditions, thereby ensuring the service life of the battery and the normal use of the vehicle.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a method and a device for protecting a battery pack of a hybrid vehicle.
Background
When the current hybrid vehicle is parked for a long time and is not used, the power battery still can charge or self-discharge the small storage battery to cause the electric quantity to run off, and then the power battery loss is caused to influence the service life and even the vehicle can not be started. The hybrid vehicle has two power sources of an engine and a power battery, the engine can be used for charging the power battery, but the vehicle or a user is affected by frequent starting and stopping of the engine or frequent awakening of a battery management system.
Disclosure of Invention
In view of the above, the present invention is directed to a method for protecting a battery pack of a hybrid vehicle, so as to detect and charge the battery pack under appropriate conditions, thereby ensuring the battery life and normal use of the vehicle.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method of protecting a battery pack of a hybrid vehicle, the method comprising: receiving a charging request signal at least once, wherein the charging request signal is generated when the hybrid vehicle is in a dormant state and a battery management system judges that the charge state of the battery pack is less than or equal to a first preset value, and the battery management system judges the charge state of the battery pack once every first preset time; responding to the charging request signal, sending an engine starting request to a user, and controlling the battery management system to stop judging the state of charge of the battery pack at intervals of the first preset time until the number of times of sending the engine starting request reaches a preset number of times; controlling an engine start to charge the battery pack upon receiving a start engine signal from a user.
Further, the controlling the battery management system to stop judging the state of charge of the battery pack every other first preset time includes: and controlling the battery management system to stop executing the judgment of the charge state of the battery pack or controlling the battery management system to judge the charge state of the battery pack once every second preset time, wherein the second preset time is longer than the first preset time.
Further, after receiving the charging request signal, the method further includes: responding to the charging request signal, and judging whether the hybrid vehicle meets a preset condition, wherein the preset condition comprises at least one of the permission of activation of a charging function, the turning-off of a power system power mode, the non-insertion of a charging gun and the oil quantity of an oil tank being more than or equal to a preset oil quantity; and sending the engine starting request to a user when the hybrid vehicle is judged to meet the preset condition.
Further, after sending a request to start the engine to a user in response to the charge request signal, the method further comprises: and when an engine non-starting signal from a user is received, controlling the battery management system to stop executing the judgment of the state of charge of the battery pack.
Further, after controlling the engine to start to charge the battery pack, the method further includes: and when a signal that the state of charge of the battery pack is greater than or equal to a second preset value or a signal that the charging time is greater than or equal to a third preset time is received, controlling the hybrid vehicle to power off to stop charging the battery pack, wherein the second preset value is greater than the first preset value.
Compared with the prior art, the method for protecting the battery pack of the hybrid vehicle has the following advantages:
firstly, receiving a charging request signal at least once, wherein the charging request signal is generated when a battery management system judges that the state of charge of a battery pack is less than or equal to a first preset value every a first preset time; then, in response to a charging request signal, sending an engine starting request to a user, controlling a battery management system to stop judging the state of charge of the battery pack at every first preset time until the number of times of sending the engine starting request reaches a preset number, and controlling an engine to start to charge the battery pack when receiving an engine starting signal from the user. The invention receives the charging request signal when the state of charge of the battery pack is less than or equal to the first preset value, limits the times and conditions for sending the request for starting the engine, controls the engine to start when receiving the signal for starting the engine from the user, can detect and charge the battery pack under proper conditions, and ensures the service life of the battery and the normal use of the vehicle.
Another objective of the present invention is to provide a protection device for a battery pack of a hybrid vehicle, so as to detect and charge the battery pack under appropriate conditions, thereby ensuring the battery life and normal use of the vehicle.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a protection device for a battery pack of a hybrid vehicle, the device comprising: the hybrid vehicle charging system comprises a receiving unit, a sending unit and a control unit, wherein the receiving unit is used for receiving a charging request signal at least once, the charging request signal is generated when a battery management system judges that the charge state of a battery pack is smaller than or equal to a first preset value when the hybrid vehicle is in a dormant state, and the battery management system judges the charge state of the battery pack once every first preset time; the sending unit is used for responding to the charging request signal and sending an engine starting request to a user, and the control unit controls the battery management system to stop judging the state of charge of the battery pack every other first preset time until the number of times of sending the engine starting request reaches a preset number; the control unit is also used for controlling the engine to be started to charge the battery pack when receiving a signal for starting the engine from a user.
Further, the control unit is further configured to: and controlling the battery management system to stop executing the judgment of the charge state of the battery pack or controlling the battery management system to judge the charge state of the battery pack once every second preset time, wherein the second preset time is longer than the first preset time.
Further, after receiving the charging request signal, the transmitting unit is further configured to: responding to the charging request signal, and judging whether the hybrid vehicle meets a preset condition, wherein the preset condition comprises at least one of the permission of activation of a charging function, the turning-off of a power system power mode, the non-insertion of a charging gun and the oil quantity of an oil tank being more than or equal to a preset oil quantity; and sending the engine starting request to a user when the hybrid vehicle is judged to meet the preset condition.
Further, after sending an engine start request to a user in response to the charge request signal, the control unit is further configured to: and when an engine non-starting signal from a user is received, controlling the battery management system to stop executing the judgment of the state of charge of the battery pack.
Further, after controlling the engine to start to charge the battery pack, the control unit is further configured to: and when a signal that the state of charge of the battery pack is greater than or equal to a second preset value or a signal that the charging time is greater than or equal to a third preset time is received, controlling the hybrid vehicle to power off to stop charging the battery pack, wherein the second preset value is greater than the first preset value.
Compared with the prior art, the protection device of the battery pack of the hybrid vehicle and the protection method of the battery pack of the hybrid vehicle have the same advantages, and are not repeated herein.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In the drawings:
fig. 1 is a flowchart of a method for protecting a battery pack of a hybrid vehicle according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for protecting a battery pack of a hybrid vehicle according to another embodiment of the present invention;
fig. 3 is a block diagram of a protection device for a battery pack of a hybrid vehicle according to an embodiment of the present invention.
Description of reference numerals:
1 receiving unit 2 transmitting unit
3 control unit
Detailed Description
In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Fig. 1 is a flowchart of a method for protecting a battery pack of a hybrid vehicle according to an embodiment of the present invention.
As shown in fig. 1, the method includes:
step S11, receiving a charging request signal at least once, wherein the charging request signal is generated when the hybrid vehicle is in a dormant state and the battery management system judges that the charge state of the battery pack is less than or equal to a first preset value, and the battery management system judges the charge state of the battery pack once every first preset time;
specifically, a Hybrid Control Unit (HCU) may receive a charging request signal. The charge request signal is sent by a Battery Management System (BMS) (e.g., through a gateway). The BMS may perform detection and determination of a State of charge (SOC) of the battery pack every first preset time (e.g., 2 hours, but not limited thereto), and when the SOC is less than or equal to the first preset value, send a wake-up message to wake up the entire vehicle, and send a charging request signal. The HCU receives the number of times of the charging request signal depends on the BMS to judge the number of times of the SOC smaller than or equal to the first preset value, and when the BMS judges the SOC once and judges the SOC smaller than or equal to the first preset value, the HUC receives the charging request signal once. The first preset value is, for example, preferably 16%, but is not limited thereto.
Step S12, in response to the charging request signal, sending an engine start request to a user;
specifically, the HCU may determine whether the hybrid vehicle satisfies a preset condition after receiving the charging request signal, where the preset condition may include activation of a charging function permission, a power system power mode being off, a charging gun not being plugged in, a fuel tank fuel amount being equal to or greater than a preset fuel amount (e.g., but not limited to 10L), and the like. And sending an engine starting request to a user when the hybrid vehicle is judged to meet the preset condition. That is, the HCU performs the determination of whether the hybrid vehicle satisfies the preset condition every time after receiving the charge request signal, and then transmits the engine start request when the hybrid vehicle satisfies the preset condition.
More specifically, the hybrid vehicle may be provided with a Telematics Box (T-BOX) and a vehicle Telematics Service Provider (TSP), and the engine start request may be sent to the user via the T-BOX and the TSP. For example, when the HCU judges that the hybrid vehicle satisfies the preset condition, the HCU sends an engine starting request to the T-BOX, and after the T-BOX receives the signal, the T-BOX sends confirmation information to the TSP, such as "whether the vehicle is allowed to start, and user confirmation is required", and then the TSP sends an engine starting request to the user, such as "the power battery SOC is low, and the engine is requested to be started remotely to charge the power battery". In addition, after the T-BOX sends the confirmation information, the confirmation information is fed back to the HCU, and the HCU controls the whole vehicle to enter a dormant state (at the moment, the BMS starts to count the first preset time again, and detects and judges the charge state of the battery pack again after the first preset time is up).
And step S13, when the number of times of sending the engine starting request reaches a preset number, controlling the battery management system to stop judging the state of charge of the battery pack every other first preset time.
Specifically, if the HCU does not receive the feedback of the client after sending the engine start request, the BMS may re-determine the SOC of the battery pack until a first preset time, and re-wake up the hybrid vehicle, so that the HCU sends the engine start request again. Repeating the above steps, after the number of times that the HCU sends the request for starting the engine reaches a preset number of times (for example, but not limited to, three times), the battery management system is controlled to stop determining the SOC of the battery pack at every first preset time. For example, the battery management system may be controlled to directly stop performing the determination of the SOC of the battery pack, or the interval time between the two determinations may be changed, that is, the battery management system may be controlled to determine the SOC of the battery pack once every second preset time, which may be set to be greater than the first preset time since the interval time between the two determinations is changed in order to reduce the frequency of the determination performed by the BMS.
When the operation of controlling the battery management system to stop judging the SOC of the battery pack at every first preset time is to set "judge the SOC of the battery pack once at every second preset time by controlling the battery management system", the present invention may also set that when the BMS judges that the SOC of the battery pack is lower than the failure alarm threshold (for example, 6% to 7%), the charging request signal is sent once again no matter how many times the charging request signal is sent before, so as to expect to get the user's reply before causing a more serious consequence (in case that the SOC of the battery pack is lower than the failure alarm threshold, a more serious consequence is caused).
When the operation of controlling the battery management System to stop judging the SOC of the battery pack every the first preset time is to set "control the battery management System to directly stop executing the judgment of the SOC of the battery pack", the judgment of restarting the state of charge of the battery pack until the user actively controls is not performed again, for example, by a mobile terminal or a host System (HUT) including an APP, which will be described in detail below.
And step S14, controlling the engine to start to charge the battery pack when receiving the engine starting signal from the user.
Specifically, the user may receive the engine start request of step S12 through the mobile terminal or the HUT including the APP, and may select whether to start the engine, and when the user decides to start the engine, the user may send an engine start signal, and after receiving the engine start signal, the HCU controls the engine to start to charge the battery pack. Can set up the switch of function of charging ON APP and HUT, if the driver presses switch ON/OFF in APP or HUT department, HUT can issue the ON-OFF state of the function of charging to APP, APP also can issue HUT with the ON-OFF state of the function of charging, can the ON-OFF state of synchronous display function of charging ON APP and HUT.
More specifically, if the customer chooses to start the vehicle, a start engine signal is sent to the TSP, which feeds back to the T-BOX. After the T-BOX receives a signal for starting the Engine fed back by the TSP, the T-BOX wakes up the whole vehicle, the T-BOX authenticates with a Passive entry start (PEPS), after the authentication succeeds, the PEPS switches a power mode to ON and sends a power mode ON state signal to the HCU, and after the HCU receives the signal, the HCU controls an Engine Control Unit (ECU) to start the Engine.
Fig. 2 is a flowchart of a method for protecting a battery pack of a hybrid vehicle according to another embodiment of the present invention.
As shown in fig. 2, the method includes:
step S21, receiving a charging request signal at least once, wherein the charging request signal is generated when the hybrid vehicle is in a dormant state and the battery management system judges that the charge state of the battery pack is less than or equal to a first preset value, and the battery management system judges the charge state of the battery pack once every first preset time;
step S22, in response to the charging request signal, sending an engine start request to a user;
and step S23, when the number of times of sending the engine starting request reaches a preset number, controlling the battery management system to stop judging the state of charge of the battery pack every other first preset time.
And step S24, controlling the engine to start to charge the battery pack when receiving the engine starting signal from the user.
The embodiment of the above steps S21-S24 is similar to the embodiment of the above steps S11-S14, and will not be described again here.
And step S25, when an engine non-starting signal is received from a user, controlling the battery management system to stop executing the judgment of the state of charge of the battery pack.
Specifically, if the customer selects to refuse to start the vehicle, the HCU sends a no-start engine signal HCU, and the HCU controls the BMS to stop performing the determination of the state of charge of the battery pack.
More specifically, the client can send an engine non-starting signal to the TSP, the TSP feeds back the engine non-starting signal to the T-BOX, the T-BOX wakes up the whole vehicle after receiving the engine non-starting signal, the HCU sends an engine non-starting feedback signal to the HCU, the HCU controls the BMS to stop executing the judgment of the state of charge of the battery pack after receiving the signal, and the HCU enters a power-off process. Until the user actively controls the judgment of the state of charge of the battery pack to be started again.
And step S26, controlling the hybrid vehicle to power off to stop charging the battery pack when a signal that the state of charge of the battery pack is greater than or equal to a second preset value or a signal that the charging time is greater than or equal to a third preset time is received, wherein the second preset value is greater than the first preset value.
Specifically, after the engine is started, a start success signal is fed back. At this time, timing may be started, for example, timing may be started by directly using the T-BOX, and when the charging time is greater than or equal to a third preset time (for example, 30 minutes, but not limited thereto), the T-BOX may send a signal that the charging time is greater than or equal to the third preset time to the HCU; meanwhile, the BMS continuously detects the SOC of the battery pack, and when the SOC is equal to or greater than a second preset value (e.g., 30%, but not limited thereto), the BMS transmits a signal that the SOC is equal to or greater than the second preset value, and the HCU stops charging and performs a down current process upon receiving the signal that the SOC is equal to or greater than the second preset value or the signal that the charging time is equal to or greater than a third preset time, and thus can set a value greater than the first preset value since the second preset value is the SOC value after charging.
Fig. 3 is a block diagram of a protection device for a battery pack of a hybrid vehicle according to an embodiment of the present invention. As shown in fig. 3, the apparatus includes: the hybrid electric vehicle charging system comprises a receiving unit 1, a sending unit 2 and a control unit 3, wherein the receiving unit 1 is used for receiving a charging request signal at least once, the charging request signal is generated when a battery management system judges that the state of charge of a battery pack is smaller than or equal to a first preset value when the hybrid electric vehicle is in a dormant state, and the battery management system judges the state of charge of the battery pack once every first preset time; the sending unit 2 is configured to send an engine starting request to a user in response to the charging request signal, and the control unit 3 controls the battery management system to stop judging the state of charge of the battery pack every other first preset time until the number of times of sending the engine starting request reaches a preset number of times; the control unit 3 is used for controlling the engine to start to charge the battery pack when receiving a signal for starting the engine from a user.
Further, the control unit 3 is further configured to: and controlling the battery management system to stop executing the judgment of the charge state of the battery pack or controlling the battery management system to judge the charge state of the battery pack once every second preset time, wherein the second preset time is longer than the first preset time.
Further, after receiving the charging request signal, the sending unit 2 is further configured to: responding to the charging request signal, and judging whether the hybrid vehicle meets a preset condition, wherein the preset condition comprises at least one of the permission of activation of a charging function, the turning-off of a power system power mode, the non-insertion of a charging gun and the oil quantity of an oil tank being more than or equal to a preset oil quantity; and sending the engine starting request to a user when the hybrid vehicle is judged to meet the preset condition.
Further, after sending an engine start request to a user in response to the charge request signal, the control unit 3 is further configured to: and when an engine non-starting signal from a user is received, controlling the battery management system to stop executing the judgment of the state of charge of the battery pack.
Further, after controlling the engine to start to charge the battery pack, the control unit 3 is further configured to: and when a signal that the state of charge of the battery pack is greater than or equal to a second preset value or a signal that the charging time is greater than or equal to a third preset time is received, controlling the hybrid vehicle to power off to stop charging the battery pack, wherein the second preset value is greater than the first preset value.
The above-described protection device for a battery pack of a hybrid vehicle is similar to the above-described embodiment of the protection method for a battery pack of a hybrid vehicle, and is not described again here.
Firstly, receiving a charging request signal at least once, wherein the charging request signal is generated when a battery management system judges that the state of charge of a battery pack is less than or equal to a first preset value every a first preset time; then, in response to a charging request signal, sending an engine starting request to a user, controlling a battery management system to stop judging the state of charge of the battery pack at every first preset time until the number of times of sending the engine starting request reaches a preset number, and controlling an engine to start to charge the battery pack when receiving an engine starting signal from the user. The invention receives the charging request signal when the state of charge of the battery pack is less than or equal to the first preset value, limits the times and conditions for sending the request for starting the engine, controls the engine to start when receiving the signal for starting the engine from the user, can detect and charge the battery pack under proper conditions, and ensures the service life of the battery and the normal use of the 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 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 (10)
1. A method of protecting a battery pack of a hybrid vehicle, the method comprising:
receiving a charging request signal at least once, wherein the charging request signal is generated when the hybrid vehicle is in a dormant state and a battery management system judges that the charge state of the battery pack is less than or equal to a first preset value, and the battery management system judges the charge state of the battery pack once every first preset time;
responding to the charging request signal, sending an engine starting request to a user, and controlling the battery management system to stop judging the state of charge of the battery pack at intervals of the first preset time until the number of times of sending the engine starting request reaches a preset number of times;
controlling an engine start to charge the battery pack upon receiving a start engine signal from a user.
2. The method for protecting the battery pack of the hybrid vehicle according to claim 1, wherein the controlling the battery management system to stop determining the state of charge of the battery pack at every first preset time includes:
and controlling the battery management system to stop executing the judgment of the charge state of the battery pack or controlling the battery management system to judge the charge state of the battery pack once every second preset time, wherein the second preset time is longer than the first preset time.
3. The method for protecting a battery pack of a hybrid vehicle according to claim 1, wherein after receiving the charge request signal, the method further comprises:
responding to the charging request signal, and judging whether the hybrid vehicle meets a preset condition, wherein the preset condition comprises at least one of the permission of activation of a charging function, the turning-off of a power system power mode, the non-insertion of a charging gun and the oil quantity of an oil tank being more than or equal to a preset oil quantity;
and sending the engine starting request to a user when the hybrid vehicle is judged to meet the preset condition.
4. The method of protecting a battery pack for a hybrid vehicle according to claim 1, wherein after sending a request to start an engine to a user in response to the charge request signal, the method further comprises:
and when an engine non-starting signal from a user is received, controlling the battery management system to stop executing the judgment of the state of charge of the battery pack.
5. The method for protecting a battery pack of a hybrid vehicle according to claim 1, wherein after controlling an engine start to charge the battery pack, the method further comprises:
and when a signal that the state of charge of the battery pack is greater than or equal to a second preset value or a signal that the charging time is greater than or equal to a third preset time is received, controlling the hybrid vehicle to power off to stop charging the battery pack, wherein the second preset value is greater than the first preset value.
6. A protection device for a battery pack of a hybrid vehicle, characterized in that the device comprises:
a receiving unit, a transmitting unit and a control unit, wherein,
the receiving unit is used for receiving a charging request signal at least once, wherein the charging request signal is generated when the hybrid vehicle is in a dormant state and a battery management system judges that the charge state of the battery pack is less than or equal to a first preset value, and the battery management system judges the charge state of the battery pack once every first preset time;
the sending unit is used for responding to the charging request signal and sending an engine starting request to a user, and the control unit controls the battery management system to stop judging the state of charge of the battery pack every other first preset time until the number of times of sending the engine starting request reaches a preset number;
the control unit is also used for controlling the engine to be started to charge the battery pack when receiving a signal for starting the engine from a user.
7. The protection device for a battery pack of a hybrid vehicle according to claim 6, wherein the control unit is further configured to:
and controlling the battery management system to stop executing the judgment of the charge state of the battery pack or controlling the battery management system to judge the charge state of the battery pack once every second preset time, wherein the second preset time is longer than the first preset time.
8. The protection device for a battery pack of a hybrid vehicle according to claim 6, wherein after receiving the charge request signal, the transmission unit is further configured to:
responding to the charging request signal, and judging whether the hybrid vehicle meets a preset condition, wherein the preset condition comprises at least one of the permission of activation of a charging function, the turning-off of a power system power mode, the non-insertion of a charging gun and the oil quantity of an oil tank being more than or equal to a preset oil quantity;
and sending the engine starting request to a user when the hybrid vehicle is judged to meet the preset condition.
9. The protection device for a battery pack of a hybrid vehicle according to claim 6, wherein after sending a request to start an engine to a user in response to the charge request signal, the control unit is further configured to:
and when an engine non-starting signal from a user is received, controlling the battery management system to stop executing the judgment of the state of charge of the battery pack.
10. The protection device for a battery pack of a hybrid vehicle according to claim 6, wherein after controlling an engine start to charge the battery pack, the control unit is further configured to:
and when a signal that the state of charge of the battery pack is greater than or equal to a second preset value or a signal that the charging time is greater than or equal to a third preset time is received, controlling the hybrid vehicle to power off to stop charging the battery pack, wherein the second preset value is greater than the first preset value.
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| CN202010054836.5A CN112311071B (en) | 2020-01-17 | 2020-01-17 | Method and device for protecting battery pack of hybrid vehicle |
| PCT/CN2021/071628 WO2021143743A1 (en) | 2020-01-17 | 2021-01-14 | Protection method and device for battery pack of hybrid vehicle |
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| CN112918323A (en) * | 2021-03-22 | 2021-06-08 | 阿尔特汽车技术股份有限公司 | Charging method and system for extended range vehicle and vehicle |
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| CN114435343B (en) * | 2022-03-09 | 2023-10-03 | 东风汽车集团股份有限公司 | Vehicle anchoring self-rescue control method, device and system |
| CN115009264A (en) * | 2022-07-18 | 2022-09-06 | 中国第一汽车股份有限公司 | Start-up control method and device for hybrid electric vehicle, vehicle and medium |
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| CN112311071B (en) | 2023-01-03 |
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