CN113224411A - Battery pack heating control method and system - Google Patents
Battery pack heating control method and system Download PDFInfo
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- CN113224411A CN113224411A CN202110326022.7A CN202110326022A CN113224411A CN 113224411 A CN113224411 A CN 113224411A CN 202110326022 A CN202110326022 A CN 202110326022A CN 113224411 A CN113224411 A CN 113224411A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000012544 monitoring process Methods 0.000 claims abstract description 20
- 238000007599 discharging Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 6
- 238000012806 monitoring device Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
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- 230000007935 neutral effect Effects 0.000 description 1
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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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- 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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- 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
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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
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Automation & Control Theory (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
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- Transportation (AREA)
- Mechanical Engineering (AREA)
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- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a battery pack heating control method and system. The method comprises the following steps: when the vehicle is detected to be started, monitoring the gear state; when the gear is switched into the gear D, acquiring the temperature of a battery cell of the battery pack; if the temperature is lower than the lowest value of the preset interval value, acquiring a running mode of the vehicle, and if the running mode is a Normal mode or an ECO mode, generating a heater control instruction; if the received feedback instruction is a closing instruction or an undetermined instruction, inquiring the current gear state after a preset time interval, and if the current gear is not the P gear; the heater control command is produced again; and if the received feedback instruction is an opening instruction, controlling the heater to be opened. The beneficial effect of this application is: the intelligent processing mode is realized for the heater of the electric vehicle, and the problem of reduced endurance caused by short-range driving of the heater is effectively solved while the switch control of the heater is humanized.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a battery pack heating control method and system.
Background
At present, when the temperature of a battery pack core of an electric automobile on the market is too low, the charging and discharging capacity of the battery pack can be inhibited, the dynamic property of the whole automobile can be influenced, and the driving experience of a user is reduced.
Consequently, after electric vehicle starts the ignition, the temperature control system of car machine can obtain the temperature of battery package electricity core the very first time, judges the operating mode condition of battery package, and when the battery package temperature was crossed lowly, battery package output partly can be divided and give the heater and heat the battery package to promote the charge-discharge efficiency of battery package, experience with the drive of optimizing the user.
However, due to the complexity of the driving situation, the driving heating function is wasted for the short-range driving situation, because the temperature of the battery pack is just heated up during the short-range driving, the user has already finished the driving journey of this time, which results in the wasted extra electric quantity consumed during the heating process of the battery pack, and the cruising mileage is reduced. If the driving heating function is manually turned off, although the driving mileage can be increased, the driving experience is also reduced due to the inhibition of the charging and discharging capacity of the battery pack, and the driving pleasure is reduced.
Disclosure of Invention
The invention aims to provide a battery pack heating control method and a battery pack heating control system, which can judge and adjust the running state of a heater through intelligent control so as to take driving feeling and battery energy conservation into consideration.
A battery pack heating control method is applied to a battery pack heating control system, the battery pack heating control system comprises a battery pack and a heater, and the method comprises the following steps:
when the vehicle is detected to be started, monitoring the gear state;
if the gear is switched into the D gear, acquiring the temperature of the battery pack core;
if the temperature of the battery pack electric core is lower than the lowest value of a preset interval value, acquiring a driving mode of the vehicle, wherein the preset interval value is the temperature interval value with the optimal battery pack charging and discharging effect, and the driving mode comprises the following steps: power mode, Normal mode, and ECO mode;
if the running mode is a Normal mode or an ECO mode, generating a heater control instruction, wherein the heating control instruction comprises a starting instruction, a closing instruction and an undetermined instruction, and the heater control instruction is displayed through a control screen in the vehicle and is fed back after operation;
if the received feedback instruction is the closing instruction or the undetermined instruction, inquiring the current gear state after a preset time interval, and if the current gear is not the P gear; the heater control command is produced again;
and if the received feedback instruction is the starting instruction, controlling the heater to be started.
According to the battery pack heating control method, after the vehicle is detected to be started and shifted to the D gear, the temperature of the battery pack battery core is obtained, the working condition environment of the battery pack is further obtained, then the driving mode selected by the vehicle is judged to determine whether the power performance is emphasized or the energy is reasonably utilized by a user currently through comparison, specifically, in a Normal mode or an ECO mode, a heater control instruction is generated and fed back to a driver, and if the driver still stays in a driving state for a period of time after the driver turns off a heater, the heater control instruction is generated again to remind the driver whether to turn on the heater.
In addition, according to the battery pack heating control method provided by the invention, the following additional technical characteristics can be provided:
further, the step of obtaining the driving mode of the vehicle further comprises the following steps:
and when the running mode is the Power mode, controlling the heater to be started.
Further, the step of generating a heater control command further includes:
if the feedback of the opening instruction and the closing instruction is not received within the preset time, outputting the undetermined instruction;
and if the pending instruction is output twice continuously, controlling the heater to be started.
Further, the step of controlling the heater to be turned on further includes:
continuously monitoring the temperature of the battery pack core;
if the temperature of the battery pack core reaches the middle value of the preset interval value, controlling the heater to be turned off;
and if the temperature of the battery cell is lower than the lowest value of the preset interval value and the current gear is located at the D gear, controlling the heater to be started.
Further, the step of monitoring the gear state when the vehicle start is detected further comprises:
if the gear of the vehicle keeps a P gear state within a preset time, acquiring the temperature of the battery pack core;
if the temperature of the battery pack electric core is lower than the lowest value of the preset interval value, acquiring the input power or the output power of the battery pack in the current state;
and if the average input power or the average output power of the battery pack in the current state is greater than a preset value, controlling the heater to heat the battery pack.
The invention also provides a battery pack heating control system, which comprises:
the gear monitoring module: the system is used for monitoring the gear state when the vehicle is detected to be started;
a temperature reading module: the temperature acquisition module is used for acquiring the temperature of the battery core of the vehicle battery pack when the gear is switched into the D gear;
a driving mode query module: the method comprises the following steps of obtaining a driving mode of a vehicle when the temperature of a battery pack electric core is lower than the lowest value of a preset interval value, wherein the preset interval value is the temperature interval value with the optimal charging and discharging effect of the battery pack electric core, and the driving mode comprises the following steps: power mode, Normal mode, and ECO mode;
an instruction generation module: the heater control device is used for generating a heater control instruction when the running mode is a Normal mode or an ECO mode, wherein the heating control instruction comprises a starting instruction, a closing instruction and an undetermined instruction, and the heater control instruction is displayed through a control screen in the vehicle and is fed back after operation;
a first control module: the gear position judging module is used for inquiring the current gear position state after a preset time interval when the received feedback instruction is the closing instruction or the pending instruction, and if the current gear position is not the P gear position; reproduction heater control commands
A second control module: and the control unit is used for controlling the heater to be started when the received feedback instruction is the starting instruction.
Further, the battery pack heating control system further includes:
a third control module: and the heater is controlled to be started when the running mode is the Power mode.
Further, the battery pack heating control system further includes:
a fourth control module: the pending instruction is output if the feedback of the opening instruction and the closing instruction is not received within the preset time;
and if the pending instruction is output twice continuously, controlling the heater to be started.
Further, the battery pack heating control system further includes:
a first temperature control module: the temperature monitoring device is used for continuously monitoring the temperature of the battery pack cell;
if the temperature of the battery pack core reaches the middle value of the preset interval value, controlling the heater to be turned off;
and if the temperature of the battery cell is lower than the lowest value of the preset interval value and the current gear is located at the D gear, controlling the heater to be started.
Further, the battery pack heating control system further includes:
a second temperature control module: the temperature of the battery pack electric core is acquired if the gear of the vehicle keeps a P gear state within a preset time;
if the temperature of the battery pack electric core is lower than the lowest value of the preset interval value, acquiring the input power or the output power of the battery pack in the current state;
and if the average input power or the average output power of the battery pack in the current state is greater than a preset value, controlling the heater to heat the battery pack.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flowchart of a battery pack heating control method according to a first embodiment of the present invention;
FIG. 2 is a flowchart showing the operation of the Power mode in the first embodiment of the present invention;
FIG. 3 is a flowchart after a heater control command is generated in the first embodiment of the present invention;
fig. 4 is a flowchart of controlling a heater to heat a battery pack according to the first embodiment of the present invention;
FIG. 5 is a flowchart of monitoring the gear state in the first embodiment of the invention;
fig. 6 is a schematic structural diagram of a battery pack heating control system according to a second embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Referring to fig. 1, a battery pack heating control method according to a first embodiment of the present invention is applied to a battery pack heating control system, the battery pack heating control system includes a battery pack and a heater, and the battery pack heating control method includes the following steps:
and S1, when the vehicle is detected to be started, monitoring the gear state.
In the first embodiment of the present invention, after the electric vehicle is started, the battery pack supplies power to the vehicle machine, the vehicle machine system operates, and the vehicle machine system queries the state change of the gear, generally, the gear state includes a parking gear (P gear), a reverse gear (R gear), a neutral gear (N gear), and a driving gear (D gear), and a part of the electric vehicle further includes a low gear (L gear) and an S gear (sport gear).
And S2, if the gear is switched into the gear D, acquiring the temperature of the battery pack core.
In the embodiment of the invention, when the car machine system acquires the gear switching D gear (namely the driving gear), the real-time temperature of the battery pack battery core is acquired through the temperature sensor arranged on the battery pack battery core.
And S3, if the temperature of the battery pack electric core is lower than the lowest value of the preset interval value, acquiring the running mode of the vehicle.
The preset interval value is a temperature interval value with the best charging and discharging effect of the battery pack, and the vehicle form mode comprises a Power mode (motion mode), a Normal mode (Normal mode) and an ECO mode (energy saving mode).
And S4, if the driving mode is the Normal mode or the ECO mode, generating a heater control command.
In the embodiment of the invention, when the temperature of the battery pack is lower than the lowest value of the preset interval value, whether a heater control instruction is generated or not is determined by the vehicle machine system acquisition form mode. The heater control instruction comprises a starting instruction, a closing instruction and an undetermined instruction, the heater instruction is displayed through a control screen in the vehicle, and a driver operates a corresponding area through the touch screen to realize refrigeration feedback.
It can be understood that, in other embodiments of the present invention, the heater control command is displayed and displayed on the central control screen in a pop-up window manner when the above-mentioned series of condition conditions are met, so as to achieve the purpose of prompting the driver to select.
S5, if the received feedback instruction is a closing instruction or an undetermined instruction, inquiring the state of the current gear after a preset time interval, and if the current gear is not the P gear; the heater control command is produced again.
It can be understood that, when the driver makes a screen click miss or does not notice the heating control instruction appearing in the pop-up window, if the driver keeps driving continuously and the driving time obviously exceeds the time of short-distance driving, that is, after the vehicle system receives a feedback instruction of a closing instruction or a period of time after the pending instruction, the vehicle system acquires that the vehicle is still in operation driving (i.e., in a non-parking state), the vehicle system generates the heating control instruction again and feeds the heating control instruction back to the central control screen.
And S6, if the received feedback command is an opening command, controlling the heater to be opened.
By the mode, an intelligent processing mode is realized for the heater of the electric vehicle, when a driver expects short-distance running, the heater can be controlled to be turned off through the heater control instruction, energy consumption of operation of the heater is saved, and cruising ability of the vehicle is improved. When the driver feeds back the heater control command and the heater control command is operated in error or is operated in a leisure way, the heater control command can be popped up after the driver drives for a period of time, and the correct operation can be selected again. Through the technical scheme of the invention, the problem of reduced endurance caused by short-range driving of the heater is effectively solved while the switch control of the heater is humanized.
Referring to fig. 2, a flowchart illustrating a Power mode as a driving mode in a battery pack heating control method according to a first embodiment of the present invention includes the following steps:
and step S3, if the temperature of the battery pack electric core is lower than the lowest value of the preset interval value, acquiring the driving mode of the vehicle.
And step S31, when the running mode is the Power mode, controlling the heater to heat the battery pack.
According to the invention, the car machine system directly controls the heater to heat the battery pack by judging that the driving mode is in the Power mode state, so that the battery pack can reach the optimal charging and discharging state in the fastest way, the discharging efficiency of the vehicle battery pack can be maximized in the shortest time, and the requirement of the vehicle on the output Power of the battery pack in the Power mode can be met.
Referring to fig. 3, a flowchart after a heater control command is generated in a pool pack heating control method according to a first embodiment of the present invention is provided, including the following steps:
step S4, if the driving mode is Normal mode or ECO mode, generating a heater control command,
step S41, if the feedback of the opening instruction and the closing instruction is not received within the preset time, outputting the pending instruction;
and step S42, if the pending command is output twice continuously, controlling the heater to heat the battery pack.
And step S6, if the received feedback command is an opening command, controlling the heater to be opened.
Step S51, if the received feedback instruction is a closing instruction, inquiring the current gear state after a preset time interval, and if the current gear is not the P gear; the heater control command is produced again.
In the embodiment of the invention, when the heater control instruction is displayed on the central control screen in a popup window mode, and a driver does not have time to operate or ignore, the heater control instruction is defaulted as a selection pending instruction after a certain time, and the popup window automatically disappears.
It can be understood that if the feedback instruction received twice by the vehicle machine system is an undetermined instruction, it indicates that the driver does not notice the heating control instruction or does not have the conditional operation instruction, and the feedback instruction occurs twice, and at the same time, it indicates that the current driving stroke is relatively long, so that the vehicle machine system directly controls the heater to heat the battery pack, so as to overcome the situation that the heater is not started to heat the battery pack under the condition of long-distance driving due to subjective reasons. The problem that the battery pack cannot be fully discharged at a low temperature in the long-distance driving process is solved. The driving experience is further optimized.
Referring to fig. 4, another operation method for controlling a heater to heat a battery pack in a battery pack heating control method according to a first embodiment of the present invention includes the following steps:
and step S6, if the received feedback command is an opening command, controlling the heater to be opened.
And step S61, continuously monitoring the temperature of the battery pack electric core.
And step S62, if the temperature of the battery pack electric core reaches the middle value of the preset interval value, controlling the heater to be closed.
And step S63, if the temperature of the battery electric core is lower than the lowest value of the preset interval value and the current gear is located at gear D, controlling the heater to be started.
In the embodiment of the invention, after the heater heats the battery pack, the temperature of the battery pack electric core is continuously monitored, when the temperature is heated to the appropriate temperature of the charging and discharging efficiency of the battery pack (namely the middle value of the preset interval value), the heater is controlled to be turned off, when the temperature of the battery pack electric core is reduced to the lowest value of the preset interval value, the vehicle machine system acquires the gear condition of the vehicle, and if the temperature is in the D gear, the vehicle is still in the driving state, and the heater is controlled to be turned on. Through the mode of monitoring the temperature of the battery pack in real time, the heater is turned on and off discontinuously according to the temperature change trend of the battery pack core, so that the heating time of the heater is further saved, and the aim of saving energy consumption is achieved.
Referring to fig. 5, another operation method for monitoring the shift state in the method for controlling the heating of a pool pack according to the first embodiment of the present invention includes the following steps:
and step S1, when the vehicle is detected to be started, the gear state is monitored.
And step S11, if the gear of the vehicle keeps the P gear state within the preset time, acquiring the temperature of the battery pack electric core.
And step S12, if the temperature of the battery pack electric core is lower than the lowest value of the preset interval value, acquiring the input power or the output power of the battery pack in the current state.
And step S13, if the average input power or the average output power of the battery pack in the current state is larger than a preset value, controlling the heater to heat the battery pack.
It can be understood that, based on the functional diversification factors of the electric vehicle, when the user does not aim at driving after the vehicle is started, the electric vehicle can be used for audio-visual entertainment, sleeping and the like at the present stage, and when the audio-visual system or the air conditioning system of the vehicle is operated in the vehicle starting state, the battery pack needs to output electric energy with certain power to ensure that each power consumption system operates. Under the condition that the vehicle operates the air conditioner independently for heating, the output electric energy is basically more than kilowatt per hour.
In order to enable the battery pack to provide sufficient power for the air conditioning system in a low-temperature state, the invention is controlled and realized through the steps, under the condition that the vehicle is in a non-starting state (namely a P-gear state) for a long time and the temperature of the battery pack battery core is lower than a preset interval value, the output power of the current vehicle is obtained, whether the vehicle starts a large-scale power consumption system such as an air conditioner or not is judged by comparing whether the average value of the output power is larger than a preset value or not, and then when the large-scale power consumption system runs, the heater can rapidly heat the battery pack, and the power supply efficiency is improved.
Similarly, whether the vehicle is in a charging state or not is judged by comparing the input power of the battery pack with the preset value, so that whether the battery pack is heated or not is judged, and the charging efficiency of the battery pack is improved.
Referring to fig. 5, a battery pack heating control system according to a second embodiment of the present invention includes:
the gear monitoring module 10: and the gear state is monitored when the vehicle is detected to be started.
The temperature reading module 20: and the temperature of the battery pack core of the vehicle is acquired when the gear is switched into the D gear.
The travel mode query module 30: and the driving mode of the vehicle is acquired when the temperature of the battery pack electric core is lower than the lowest value of the preset interval value.
Wherein, predetermine interval value and be the temperature interval value that battery package electricity core charge-discharge effect is optimal, the mode of traveling includes: power mode, Normal mode, and ECO mode.
The instruction generation module 40: and the controller is used for generating a heater control command when the running mode is a Normal mode or an ECO mode.
The heating control instruction comprises a starting instruction, a closing instruction and an undetermined instruction, the heater control instruction is displayed through a control screen in the vehicle, and the instruction is fed back after the operation of a driver.
The first control module 50: the system comprises a control module, a control module and a control module, wherein the control module is used for inquiring the state of the current gear after a preset time interval when a received feedback instruction is a closing instruction or a pending instruction, and if the current gear is not the P gear; the heater control command is produced again.
The second control module 60: and the control unit is used for controlling the heater to be started when the received feedback instruction is a starting instruction.
Further, the battery pack heating control system further includes:
the third control module 70: and the heater is controlled to be started when the running mode is the Power mode.
The fourth control module 80: the control device is used for outputting a pending instruction if the feedback of the opening instruction and the closing instruction is not received within the preset time; and if the pending instruction is output twice continuously, controlling the heater to be started.
The first temperature control module 90: the temperature monitoring device is used for continuously monitoring the temperature of the battery pack core;
if the temperature of the battery pack core reaches the middle value of the preset interval value, controlling the heater to be closed;
and if the temperature of the battery cell is lower than the lowest value of the preset interval value and the current gear is located at the D gear, controlling the heater to be started.
The second temperature control module 100: the temperature acquisition unit is used for acquiring the temperature of a battery pack core if the gear of the vehicle keeps a P gear state within a preset time;
if the temperature of the battery pack core is lower than the lowest value of the preset interval value, acquiring the input power or the output power of the battery pack in the current state;
and if the average input power or the average output power of the battery pack in the current state is larger than a preset value, controlling the heater to heat the battery pack.
By combining the battery pack heating control method and the battery pack heating control system provided by the invention, an intelligent processing mode is realized for the heater of the electric vehicle, and when a driver expects short-distance running, the heater can be controlled to be turned off through a heater control instruction, so that the energy consumption of the operation of the heater is saved, and the cruising ability of the vehicle is improved. When the driver feeds back the heater control command and the heater control command is operated in error or is operated in a leisure way, the heater control command can be popped up after the driver drives for a period of time, and the correct operation can be selected again. Through the technical scheme of the invention, the problem of reduced endurance caused by short-range driving of the heater is effectively solved while the switch control of the heater is humanized.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A battery pack heating control method is applied to a battery pack heating control system, the battery pack heating control system comprises a battery pack and a heater, and the battery pack heating control method is characterized by comprising the following steps:
when the vehicle is detected to be started, monitoring the gear state;
if the gear is switched into the D gear, acquiring the temperature of the battery pack core;
if the temperature of the battery pack electric core is lower than the lowest value of a preset interval value, acquiring a driving mode of the vehicle, wherein the preset interval value is the temperature interval value with the optimal battery pack charging and discharging effect, and the driving mode comprises the following steps: power mode, Normal mode, and ECO mode;
if the running mode is a Normal mode or an ECO mode, generating a heater control instruction, wherein the heating control instruction comprises a starting instruction, a closing instruction and an undetermined instruction, and the heater control instruction is displayed through a control screen in the vehicle and is fed back after operation;
if the received feedback instruction is the closing instruction or the undetermined instruction, inquiring the current gear state after a preset time interval, and if the current gear is not the P gear; the heater control command is produced again;
and if the received feedback instruction is the starting instruction, controlling the heater to be started.
2. The battery pack heating control method according to claim 1, characterized in that the step of acquiring the running mode of the vehicle is followed by further comprising:
and when the running mode is the Power mode, controlling the heater to be started.
3. The battery pack heating control method according to claim 1, wherein the step of generating a heater control command is followed by further comprising:
if the feedback of the opening instruction and the closing instruction is not received within the preset time, outputting the undetermined instruction;
and if the pending instruction is output twice continuously, controlling the heater to be started.
4. The method of claim 1, wherein the step of controlling the heater to turn on is further followed by:
continuously monitoring the temperature of the battery pack core;
if the temperature of the battery pack core reaches the middle value of the preset interval value, controlling the heater to be turned off;
and if the temperature of the battery cell is lower than the lowest value of the preset interval value and the current gear is located at the D gear, controlling the heater to be started.
5. The battery pack heating control method according to claim 1, wherein the step of monitoring the gear state when vehicle launch is detected further comprises:
if the gear of the vehicle keeps a P gear state within a preset time, acquiring the temperature of the battery pack core;
if the temperature of the battery pack electric core is lower than the lowest value of the preset interval value, acquiring the input power or the output power of the battery pack in the current state;
and if the average input power or the average output power of the battery pack in the current state is greater than a preset value, controlling the heater to heat the battery pack.
6. A battery pack heating control system, the system comprising:
the gear monitoring module: the system is used for monitoring the gear state when the vehicle is detected to be started;
a temperature reading module: the temperature acquisition module is used for acquiring the temperature of the battery core of the vehicle battery pack when the gear is switched into the D gear;
a driving mode query module: the method comprises the following steps of obtaining a driving mode of a vehicle when the temperature of a battery pack electric core is lower than the lowest value of a preset interval value, wherein the preset interval value is the temperature interval value with the optimal charging and discharging effect of the battery pack electric core, and the driving mode comprises the following steps: power mode, Normal mode, and ECO mode;
an instruction generation module: the heater control device is used for generating a heater control instruction when the running mode is a Normal mode or an ECO mode, wherein the heating control instruction comprises a starting instruction, a closing instruction and an undetermined instruction, and the heater control instruction is displayed through a control screen in the vehicle and is fed back after operation;
a first control module: the gear position judging module is used for inquiring the current gear position state after a preset time interval when the received feedback instruction is the closing instruction or the pending instruction, and if the current gear position is not the P gear position; producing a heater control command again;
a second control module: and the control unit is used for controlling the heater to be started when the received feedback instruction is the starting instruction.
7. The battery pack heating control system according to claim 6, further comprising:
a third control module: and the heater is controlled to be started when the running mode is the Power mode.
8. The battery pack heating control system according to claim 6, further comprising:
a fourth control module: the pending instruction is output if the feedback of the opening instruction and the closing instruction is not received within the preset time;
and if the pending instruction is output twice continuously, controlling the heater to be started.
9. The battery pack heating control system according to claim 6, further comprising:
a first temperature control module: the temperature monitoring device is used for continuously monitoring the temperature of the battery pack cell;
if the temperature of the battery pack core reaches the middle value of the preset interval value, controlling the heater to be turned off;
and if the temperature of the battery cell is lower than the lowest value of the preset interval value and the current gear is located at the D gear, controlling the heater to be started.
10. The battery pack heating control system according to claim 6, further comprising:
a second temperature control module: the temperature of the battery pack electric core is acquired if the gear of the vehicle keeps a P gear state within a preset time;
if the temperature of the battery pack electric core is lower than the lowest value of the preset interval value, acquiring the input power or the output power of the battery pack in the current state;
and if the average input power or the average output power of the battery pack in the current state is greater than a preset value, controlling the heater to heat the battery pack.
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