CN110970687A - Power battery heating control method and device and vehicle - Google Patents
Power battery heating control method and device and vehicle Download PDFInfo
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- CN110970687A CN110970687A CN201811162703.9A CN201811162703A CN110970687A CN 110970687 A CN110970687 A CN 110970687A CN 201811162703 A CN201811162703 A CN 201811162703A CN 110970687 A CN110970687 A CN 110970687A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using 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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- Automation & Control Theory (AREA)
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- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The disclosure relates to a heating control method and device for a power battery and a vehicle, and aims to realize heating control of the power battery according to user requirements. The power battery heating control method comprises the following steps: acquiring heating appointment information set by a user, wherein the heating appointment information comprises heating starting time of the power battery; and starting heating control of the power battery when the time recorded by the vehicle reaches the heating starting time, wherein the heating starting time comprises the time of the vehicle in the non-charging time period.
Description
Technical Field
The disclosure relates to the technical field of vehicles, in particular to a power battery heating control method and device and a vehicle.
Background
With the continuous development of science and technology, vehicle technology has also been continuously developed, and more electric motor cars appear in people's daily life. The power of the electric vehicle is usually provided by a power battery, the power battery of the electric vehicle is generally a lithium ion battery at present, the optimal temperature range of the charge-discharge characteristic of the power battery is 35-45 ℃, and the charge-discharge capacity of the power battery is weaker in a low-temperature environment, so the cruising range of the electric vehicle in the low-temperature environment is greatly reduced.
In the related art, in order to solve the problem that the charging and discharging performance of the power battery is weak in the low-temperature environment, a heating process of the power battery is mainly determined according to the temperature of the power battery, and cannot be realized according to the requirements of users.
Disclosure of Invention
The invention aims to provide a power battery heating control method, a power battery heating control device and a vehicle, so that the power battery can be heated according to the requirements of users.
In order to achieve the above object, in a first aspect, the present disclosure provides a power battery heating control method, including:
heating reservation information set by a user is acquired, wherein the heating reservation information comprises heating starting time of the power battery;
starting heating control of the power battery when the time recorded by the vehicle reaches the heating start time, wherein the heating start time includes a time of the vehicle in a non-charging period.
Alternatively, the heating reservation information is acquired from a reservation control device of the vehicle upon detection of a power-off instruction for instructing the vehicle to power off.
Optionally, the method further comprises:
and when the time recorded by the vehicle does not reach the heating starting time, disconnecting the controllable low voltage of the whole vehicle and/or controlling the vehicle to enter the dormancy state.
Optionally, the heating control of the power battery comprises:
receiving a heating signal sent by the reservation control device; wherein the heating signal is generated by the reservation control device when the vehicle is in a non-high voltage mode and the time recorded by the vehicle reaches the heating start time;
and controlling the power battery to be heated according to the heating signal.
Optionally, the heating control of the power battery comprises:
determining an operating mode of the vehicle when the time recorded by the vehicle reaches the heating start time;
if the working mode of the vehicle comprises a high-voltage mode, heating the power battery according to a battery heating strategy which is built in a battery management controller and is in the high-voltage mode;
if the working mode of the vehicle does not comprise a high-voltage mode, generating a heating signal, and controlling the heating of the power battery according to the heating signal;
and if the working mode of the vehicle is in a power battery charging mode and the charging current is greater than the preset current, generating a heating signal and controlling the heating of the power battery according to the heating signal.
Optionally, the heating schedule information includes a heating stop time for the power battery, and the heating control for the power battery includes:
acquiring the temperature of the power battery in the process of heating the power battery;
if the moment when the temperature of the power battery reaches the preset temperature value is earlier than the heating stop time, preserving the heat of the power battery;
and when the time recorded by the vehicle reaches the heating stop time, stopping heat preservation of the power battery.
In a second aspect, the present disclosure also provides a power battery heating control apparatus, the apparatus comprising:
the acquisition module is used for acquiring heating appointment information set by a user, and the heating appointment information comprises heating starting time of the power battery;
a heating module for starting heating control of the power battery when the time recorded by the vehicle reaches the heating start time, wherein the heating start time includes a time of the vehicle in a non-charging period.
Optionally, the obtaining module is configured to obtain the heating reservation information from a reservation control device of the vehicle when the power-off instruction is detected.
Optionally, the apparatus further comprises:
and the disconnection control module is used for disconnecting the controllable low voltage of the whole vehicle and/or controlling the vehicle to enter the dormancy state when the time recorded by the vehicle does not reach the heating starting time.
Optionally, the heating module is configured to:
receiving a heating signal sent by the reservation control device; wherein the heating signal is generated by the reservation control device when the vehicle is in a non-high voltage mode and the time recorded by the vehicle reaches the heating start time;
and controlling the power battery to be heated according to the heating signal.
Optionally, the heating module is configured to:
determining an operating mode of the vehicle when the time recorded by the vehicle reaches the heating start time;
if the working mode of the vehicle comprises a high-voltage mode, heating the power battery according to a battery heating strategy which is built in a battery management controller and is in the high-voltage mode;
if the working mode of the vehicle does not comprise a high-voltage mode, generating a heating signal, and controlling the heating of the power battery according to the heating signal;
and if the working mode of the vehicle is in a power battery charging mode and the charging current is greater than the preset current, generating a heating signal and controlling the heating of the power battery according to the heating signal.
Optionally, the heating schedule information includes a heating stop time for the power battery, and the heating module is configured to:
acquiring the temperature of the power battery in the process of heating the power battery;
if the moment when the temperature of the power battery reaches the preset temperature value is earlier than the heating stop time, preserving the heat of the power battery;
and when the time recorded by the vehicle reaches the heating stop time, stopping heat preservation of the power battery.
In a third aspect, the present disclosure also provides a vehicle, which includes any one of the above power battery heating control devices.
Optionally, the vehicle further comprises:
the reservation control device is connected with the power battery heating control device and used for receiving heating reservation information set by a user;
and the power battery heating control device is connected with the power battery and used for acquiring the heating reservation information from the reservation control device.
Through the technical scheme, heating reservation information set by a user can be acquired, the heating reservation information comprises heating starting time of the power battery, and then heating control of the power battery is started when the time recorded by the vehicle reaches the heating starting time, wherein the heating starting time comprises the time of the vehicle in a non-charging time period. That is to say, the power battery heating control method of the present disclosure can heat the power battery according to the scheduled heating information set by the user, and the heating process of the power battery can be flexibly changed according to the user's needs, so that the user experience is good. Moreover, since the heating start time includes the time of the vehicle in the non-charging time period, the power battery heating control method disclosed by the disclosure can also realize heating of the power battery when the electric vehicle is not in a charging state, and fully ensure normal use of the power battery in a low-temperature environment.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a flow chart of a power battery heating control method shown in accordance with an exemplary embodiment of the present disclosure;
FIG. 2 is another flow chart diagram illustrating a power battery heating control method according to an exemplary embodiment of the present disclosure;
FIG. 3 is a block diagram illustrating a power battery heating control apparatus according to an exemplary embodiment of the present disclosure;
FIG. 4 is a block diagram illustrating the configuration of a power battery system in a vehicle according to an exemplary embodiment of the present disclosure.
Description of the reference numerals
401-power battery system 402-power battery
403-Battery temperature control Unit 404-reservation control Unit
405-Battery management System 406-Low Voltage Battery
407-DC-DC converter 408-charging socket
409-charging plug 410-charging cabinet
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
The vehicle in the embodiment of the present disclosure may be an electric vehicle, or another new energy vehicle, and the like, and the embodiment of the present disclosure does not limit this, and any vehicle using a power battery may be the vehicle in the embodiment of the present disclosure.
Fig. 1 is a flowchart illustrating a power battery heating control method according to an exemplary embodiment of the present disclosure, referring to fig. 1, the method including the steps of:
step S101, heating reservation information set by a user is obtained, wherein the heating reservation information comprises heating starting time of the power battery;
and step S102, when the time recorded by the vehicle reaches the heating starting time, starting heating control on the power battery, wherein the heating starting time comprises the time of the vehicle in a non-charging time period.
By the power battery heating control method in the embodiment of the disclosure, the heating of the power battery can be started according to the heating start time included in the heating reservation information set by the user, the heating requirement of the user on the power battery can be well met, and the heating process of the power battery can be more flexibly controlled. Moreover, since the heating start time includes the time of the vehicle in the non-charging time period, the power battery heating control method disclosed by the disclosure can also realize heating of the power battery when the electric vehicle is not in a charging state, and fully ensure normal use of the power battery in a low-temperature environment
It should be understood that, before performing step S101, that is, before acquiring the heating reservation information set by the user, the user should also set the heating reservation information in advance, for example, the user may set the heating reservation information in advance through a reservation control device of the vehicle, and then the battery management controller of the vehicle acquires the heating reservation information from the reservation control device, or the user may set the heating reservation information in advance directly through the battery management controller of the vehicle, and the like, which is not limited by the embodiment of the disclosure.
If the user sets the heating reservation information in advance through the reservation control device of the vehicle, the heating reservation information may be acquired from the reservation control device of the vehicle upon detection of a power-off instruction for instructing the power-off of the vehicle in step S101.
For example, when the user does not use the vehicle in the evening in winter, the temperature is low in the evening in winter, and in order to ensure that the temperature of the power battery is maintained within the normal temperature range when the user uses the vehicle in the next morning, the heating reservation information can be acquired from the reservation control device of the vehicle when the power-off command for powering off the vehicle is detected, so that the power battery of the vehicle can be heated in advance according to the heating reservation information, the temperature of the power battery of the vehicle can be maintained within the normal temperature range, and the normal use of the vehicle by the user is ensured.
In step S102, when the time recorded by the vehicle reaches the heating start time, the heating control of the power battery may be started, but if the time recorded by the vehicle does not reach the heating start time, the controllable low voltage of the whole vehicle may be disconnected and/or the vehicle may be controlled to go to sleep.
For example, if the heating start time included in the reserved heating information set by the user is 18 points and the time recorded by the vehicle is 17 points, that is, the time recorded by the vehicle does not reach the heating start time, the controllable low voltage power of the entire vehicle can be turned off and the vehicle can be controlled to go to the sleep state, and then when the time recorded by the vehicle reaches the heating start time, the controllable low voltage power of the entire vehicle can be turned on first and then the heating control of the power battery can be started.
It should be noted that, in the embodiment of the present disclosure, the controllable low voltage power of the entire vehicle includes low voltage power supplies of the control devices such as the battery management controller and the reservation control device, and therefore, if the controllable low voltage power of the entire vehicle is turned off when the time recorded by the vehicle does not reach the heating start time, when the time recorded by the vehicle reaches the heating start time, the controllable low voltage power of the entire vehicle needs to be turned on first, and the power supply of the battery management controller is recovered, so that the battery management controller can only start the heating control of the power battery.
It should be understood that, in the embodiment of the present disclosure, a specific manner of performing heating control on the power battery is not limited, and possible manners are described below.
Alternatively, the heating control of the power battery may be that the heating signal sent by the reservation control device is received first, and then the power battery is heated according to the heating signal.
The heating signal is generated by the reservation control means when the vehicle is in a non-high voltage mode and the time recorded by the vehicle reaches the heating start time, and the non-high voltage mode is an operation mode in which the vehicle is not in a drivable state, such as a charging mode or the like.
When the vehicle is in a non-high-voltage mode and the time recorded by the vehicle reaches the heating starting time, the reservation control device of the vehicle generates a heating signal and can send the heating signal to the battery management controller of the vehicle, so that the heating control of the power battery can be started after the battery management controller receives the heating signal.
For example, when the vehicle is in a power battery charging mode (non-high voltage mode), and the user sets the heating schedule information in advance through the schedule control device, when the time recorded by the vehicle reaches the heating start time included in the heating schedule information, the schedule control device of the vehicle generates a heating signal and sends the heating signal to the battery management controller of the vehicle, and then the battery management controller can start heating control of the power battery according to the received heating signal.
It should be understood that, in the embodiment of the present disclosure, if the user sets the heating schedule information in advance through the battery management controller, the heating signal may also be generated by the battery management controller when the time recorded by the vehicle reaches the heating start time, and the present disclosure does not limit the specific process of generating the heating signal.
Through the mode, when the heating signal is received, the heating control on the power battery can be started, if the heating signal is not received, the heating control on the power battery can not be started, and the stable operation of the heating process of the power battery can be fully ensured.
Because the vehicle has a plurality of different working modes, in order to ensure that the temperature of the power battery of the vehicle can be within a normal temperature range in different working modes, a corresponding power battery heating control strategy needs to be determined according to the working modes of the vehicle, so that the heating process of the power battery in a low-temperature environment is controlled more flexibly.
Alternatively, the method may include determining an operating mode of the vehicle when the time recorded by the vehicle reaches a heating start time, heating the power battery according to a battery heating strategy, which is built in a battery management controller, in the high-voltage mode if the operating mode of the vehicle includes the high-voltage mode, generating a heating signal and controlling to heat the power battery according to the heating signal if the operating mode of the vehicle does not include the high-voltage mode, and generating a heating signal and controlling to heat the power battery according to the heating signal if the operating mode of the vehicle is in a power battery charging mode and the charging current is greater than a preset current.
The high-voltage mode is an operation mode in which the vehicle is in a drivable state, such as a driving mode, and the like, and the non-high-voltage mode is an operation mode in which the vehicle is not in a drivable state, such as a power battery charging mode, a low-voltage device charging mode, and the like, wherein the low-voltage device includes a battery management controller, a reservation control device, and the like, using a low-voltage power supply.
Since the vehicle is in the low-voltage device charging mode, and may also be in the high-voltage mode or the power battery charging mode, the above-mentioned operating modes of the vehicle include the case where the high-voltage mode includes both the case where the vehicle is only in the high-voltage mode and the case where the vehicle is in the low-voltage device charging mode and the high-voltage mode.
Similarly, the operating mode of the vehicle excluding the high-voltage mode may be a case where the vehicle is only in the power battery charging mode, may be a case where the vehicle is only in the low-voltage charging mode, and may be a case where the vehicle is in the power battery charging mode and the low-voltage charging mode.
When the operating mode of the vehicle includes the high-voltage mode, the battery management controller or the reservation control device of the vehicle may not generate the heating signal, and the battery management controller may perform heating control on the power battery according to the temperature of the power battery, for example, when the temperature of the power battery is lower than a first preset temperature threshold, start the heating control on the power battery, and when the temperature of the power battery reaches a second preset temperature threshold, stop the heating control on the power battery, where the second preset temperature threshold is greater than the first preset temperature threshold, or perform other different heating controls on the power battery according to the temperature of the power battery, and so on.
If the operating mode of the vehicle does not include the high-voltage mode, and the battery management controller or the reservation control device of the vehicle generates the heating signal, the battery management controller can perform heating control on the power battery according to the heating signal.
If the working mode of the vehicle is the power battery charging mode, in order to ensure that the charging process is normally carried out and further ensure the normal operation of the heating process of the power battery, whether the charging current is greater than the preset current or not needs to be judged firstly, when the charging current is greater than the preset current value, a heating signal is generated, and then the battery management controller heats the power battery according to the heating signal.
It should be understood that the preset current may be a rated charging current of the power battery, for example, the preset current may be set to 5A, and the like, which is not limited by the present disclosure.
In addition, if the charging current is not greater than the preset current, it is indicated that a fault occurs in the charging process of the power battery, at this time, the controllable low-voltage electricity of the vehicle needs to be disconnected firstly, that is, the power supplies of various low-voltage electric devices (such as a battery management controller) involved in the charging process of the power battery are disconnected, then the power battery can be overhauled, and after the overhaul is completed, the power battery heating control method in the embodiment of the disclosure is executed, so that the heating process of the power battery can be carried out smoothly. And when the charging current is not more than the preset current, the controllable low-voltage electricity of the whole vehicle is cut off, the power consumption of a power battery can be reduced, and the electric energy is saved.
Through the mode, according to the working mode of the vehicle, different heating controls are flexibly carried out on the power battery, so that the temperature of the power battery can be maintained within a normal temperature range under different working modes of the vehicle, and the normal use of the power battery in a low-temperature environment is fully ensured.
In this embodiment of the present disclosure, the heating schedule information set by the user may further include a heating stop time, and accordingly, in step S102, the heating control on the power battery may further include obtaining the temperature of the power battery during the heating of the power battery, preserving the temperature of the power battery if the time when the temperature of the power battery reaches the preset temperature value is earlier than the heating stop time, and then stopping preserving the temperature of the power battery when the time recorded by the vehicle reaches the heating stop time.
The preset temperature value may be set by a user according to the charging and discharging performance of the power battery, for example, the preset temperature value may be set to 40 ℃, and the like, which is not limited in this disclosure. And, the user can set the preset temperature value when setting the scheduled heating information, so that the scheduled heating information set by the user can include the heating start time, the heating stop time and the preset temperature value.
Through the mode, when the temperature of the power battery reaches the preset temperature value but the time recorded by the vehicle does not reach the heating stop time, the power battery is kept warm, the temperature of the power battery can be maintained in a normal temperature range, the power battery can be prevented from being heated too high, and therefore the normal use of the power battery in a low-temperature environment can be fully guaranteed.
The power battery heating control method provided by the present disclosure is explained below by way of a complete example.
Referring to fig. 2, a power battery heating control method according to an embodiment of the present disclosure includes the following steps:
step S201, determining whether a power-off instruction for indicating the power-off of the vehicle is detected, if not, entering step S202, otherwise, entering step S203;
step S202, reminding a user to set heating reservation information;
step S203, determining whether a user sets heating reservation information or not, if so, entering step S204, otherwise, ending the whole control flow;
step S204, heating reservation information is acquired, wherein the heating reservation information comprises heating starting time, heating stopping time and a preset temperature value;
step S205, determining whether the time recorded by the vehicle reaches the heating starting time, if so, entering step S206, otherwise, entering step S207;
step S206, determining whether the working mode of the vehicle is a high-pressure mode, if so, entering step S208, otherwise, entering step S209;
step S207, disconnecting the controllable low voltage of the whole vehicle and/or controlling the vehicle to enter the dormancy state;
step S208, heating the power battery according to a battery heating strategy which is built in the battery management controller and is in a high-voltage mode;
step S209, determining whether the working mode of the vehicle is a power battery charging mode, if so, entering step S210, otherwise, entering step S211;
step S210, determining whether the charging current is larger than a preset current, if not, entering step S212, otherwise, entering step S213;
step S211, determining whether the vehicle is in a low-voltage device charging mode, if so, entering step S219, otherwise, entering step S206;
step S212, switching off the controllable low voltage electricity of the whole vehicle;
step S213, generating a heating signal, and controlling the power battery to be heated according to the heating signal;
step S214, determining whether the temperature of the power battery reaches a target temperature, if so, entering step S215, otherwise, entering step S216;
step S215, determining whether the time recorded by the vehicle reaches the heating stop time, if so, entering step S217, otherwise, entering step S218;
step S217, heat preservation is carried out on the power battery;
step S218, stopping heating or heat preservation of the power battery;
step S219, determining whether the vehicle is in the high-pressure mode, if so, entering step S208, otherwise, entering step S220;
step S220, determining whether the vehicle is turned on the power battery charging mode, if so, proceeding to step S210, otherwise, proceeding to step S213.
It should be understood that steps S214-S218 may also be performed after step S208 to perform the temperature keeping control on the power battery when the time when the power battery reaches the target temperature is earlier than the heating stop time.
The power battery heating control method can heat the power battery according to the reserved heating information set by the user, the heating process of the power battery can be flexibly changed according to the user requirements, and the user experience is good. Moreover, since the heating start time includes the time of the vehicle in the non-charging time period, the power battery heating control method disclosed by the disclosure can also realize heating of the power battery when the electric vehicle is not in a charging state, and fully ensure normal use of the power battery in a low-temperature environment.
Referring to fig. 3, based on the same inventive concept, the disclosed embodiments further provide a power battery heating control apparatus 300, which may be implemented as part or all of a vehicle battery management system by software, hardware, or a combination of both, the power battery heating control apparatus 300 including:
an obtaining module 301, configured to obtain heating reservation information set by a user, where the heating reservation information includes a heating start time of the power battery;
a heating module 302 for initiating heating control of the power battery when the time recorded by the vehicle reaches the heating start time, wherein the heating start time includes a time of the vehicle in a non-charging period.
The power battery heating control device provided by the embodiment of the disclosure can heat the power battery according to the preset heating information set by a user, and the heating process of the power battery can be flexibly changed according to the user requirements, so that the user experience is good. Moreover, since the heating start time includes the time of the vehicle in the non-charging time period, the power battery heating control method disclosed by the disclosure can also realize heating of the power battery when the electric vehicle is not in a charging state, and fully ensure normal use of the power battery in a low-temperature environment.
Alternatively, the obtaining module 301 is configured to obtain the heating reservation information from a reservation control device of the vehicle when the power-off instruction is detected.
Optionally, the apparatus 300 further comprises:
and the disconnection control module is used for disconnecting the controllable low voltage of the whole vehicle and/or controlling the vehicle to enter the dormancy state when the time recorded by the vehicle does not reach the heating starting time.
Optionally, the heating module 302 is configured to:
receiving a heating signal sent by the reservation control device; wherein the heating signal is generated by the reservation control device when the vehicle is in a non-high voltage mode and the time recorded by the vehicle reaches the heating start time;
and controlling the power battery to be heated according to the heating signal.
Optionally, the heating module 302 is configured to:
determining an operating mode of the vehicle when the time recorded by the vehicle reaches the heating start time;
if the working mode of the vehicle comprises a high-voltage mode, heating the power battery according to a battery heating strategy which is built in a battery management controller and is in the high-voltage mode;
if the working mode of the vehicle does not comprise a high-voltage mode, generating a heating signal, and controlling the heating of the power battery according to the heating signal;
and if the working mode of the vehicle is in a power battery charging mode and the charging current is greater than the preset current, generating a heating signal and controlling the heating of the power battery according to the heating signal.
Through foretell power battery heating control device, can be according to the mode of vehicle, carry out different heating control to power battery in a flexible way for the vehicle is under different modes of operation, and its power battery's temperature can both be maintained in normal temperature range, has fully guaranteed power battery normal use under low temperature environment.
Optionally, the heating schedule information includes a heating stop time for the power battery, and the heating module 302 is configured to:
acquiring the temperature of the power battery in the process of heating the power battery;
if the moment when the temperature of the power battery reaches the preset temperature value is earlier than the heating stop time, preserving the heat of the power battery;
and when the time recorded by the vehicle reaches the heating stop time, stopping heat preservation of the power battery.
In an exemplary embodiment, the apparatus 300 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), Electronic Control Units (ECUs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described power cell heating control method.
Based on the same inventive concept, the embodiment of the disclosure also provides a vehicle, and the vehicle comprises any one of the power battery heating control devices.
Optionally, the vehicle further comprises:
the reservation control device is connected with the power battery heating control device and used for receiving heating reservation information set by a user;
and the power battery heating control device is connected with the power battery and used for acquiring the heating reservation information from the reservation control device.
Referring to fig. 4, a power battery system 401 of a vehicle in the embodiment of the present disclosure may include a power battery 402, a battery temperature control unit 403, an appointment control unit 404, a battery management system 405, a low-voltage battery 406 for providing low-voltage power supply to electronic control devices (such as the appointment control unit 404, the battery management system 405, and the like) in the power battery system, a DC-DC converter 407 for charging the low-voltage battery 406, a charging cabinet 410 capable of outputting direct current to charge the power battery and a charging plug 409 thereof, and a charging socket 408 matched with the charging plug 409.
The battery temperature control unit 403, the reservation control unit 404 and the battery management system 405 can communicate with each other, the charging socket 408 is provided with a detection switch for judging the insertion state of the charging plug 409, after the charging plug 409 is inserted into the charging socket 408 and the insertion state is confirmed, the charging cabinet 410 can communicate with the battery temperature control unit 403, the reservation control unit 404 and the battery management system 405 through a low-voltage communication interface in the charging plug 409, and the charging cabinet 410 can charge the power battery 402 through a high-voltage power supply interface in the charging plug 409 to supply power to the battery temperature control device 403 and the DC-DC converter 407.
The user can set the heating schedule information by the schedule control means 404, and upon detecting a power-off instruction, the battery management system 405 acquires the heating schedule information from the schedule control unit 404 of the vehicle, and then when the time recorded by the vehicle reaches the heating start time included in the schedule heating information, the battery management system 405 starts the heating control of the power battery.
Therefore, the vehicle can heat the power battery according to the preset heating information set by the user, the heating process of the power battery can be flexibly changed according to the user requirements, and the user experience is good. Moreover, since the heating start time includes the time of the vehicle in the non-charging time period, the power battery heating control method disclosed by the disclosure can also realize heating of the power battery when the electric vehicle is not in a charging state, and fully ensure normal use of the power battery in a low-temperature environment.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (10)
1. A power battery heating control method, characterized in that the method comprises:
heating reservation information set by a user is acquired, wherein the heating reservation information comprises heating starting time of the power battery;
starting heating control of the power battery when the time recorded by the vehicle reaches the heating start time, wherein the heating start time includes a time of the vehicle in a non-charging period.
2. The method of claim 1, wherein the obtaining of the heating schedule information set by the user comprises:
the heating reservation information is acquired from a reservation control device of the vehicle when a power-off instruction for instructing the vehicle to power off is detected.
3. The method of claim 2, further comprising:
and when the time recorded by the vehicle does not reach the heating starting time, disconnecting the controllable low voltage of the whole vehicle and/or controlling the vehicle to enter the dormancy state.
4. The method of claim 3, wherein the controlling of the heating of the power cell comprises:
receiving a heating signal sent by the reservation control device; wherein the heating signal is generated by the reservation control device when the vehicle is in a non-high voltage mode and the time recorded by the vehicle reaches the heating start time;
and controlling the power battery to be heated according to the heating signal.
5. The method of claim 1, wherein the controlling of the heating of the power cell comprises:
determining an operating mode of the vehicle when the time recorded by the vehicle reaches the heating start time;
if the working mode of the vehicle comprises a high-voltage mode, heating the power battery according to a battery heating strategy which is built in a battery management controller and is in the high-voltage mode;
if the working mode of the vehicle does not comprise a high-voltage mode, generating a heating signal, and controlling to heat the power battery according to the heating signal;
and if the working mode of the vehicle is in a power battery charging mode and the charging current is greater than the preset current, generating a heating signal and controlling the power battery to be heated according to the heating signal.
6. The method according to any one of claims 1 to 4, wherein the heating schedule information includes a heating stop time for the power battery, and the heating control for the power battery includes:
acquiring the temperature of the power battery in the process of heating the power battery;
if the moment when the temperature of the power battery reaches the preset temperature value is earlier than the heating stop time, preserving the heat of the power battery;
and when the time recorded by the vehicle reaches the heating stop time, stopping heat preservation of the power battery.
7. A power battery heating control apparatus, characterized in that the apparatus comprises:
the acquisition module is used for acquiring heating appointment information set by a user, and the heating appointment information comprises heating starting time of the power battery;
a heating module for starting heating control of the power battery when the time recorded by the vehicle reaches the heating start time, wherein the heating start time includes a time of the vehicle in a non-charging period.
8. The apparatus of claim 7, wherein the acquisition module is configured to acquire the heating reservation information from a reservation control device of a vehicle when a power-off command is detected.
9. A vehicle characterized in that the vehicle includes the power battery heating control apparatus according to claim 7 or 8.
10. The vehicle of claim 9, further comprising:
the reservation control device is connected with the power battery heating control device and used for receiving heating reservation information set by a user;
and the power battery heating control device is connected with the power battery and used for acquiring the heating reservation information from the reservation control device.
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