CN114094235A - Heating method of electric storage device, heating system thereof and storage medium - Google Patents
Heating method of electric storage device, heating system thereof and storage medium Download PDFInfo
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title claims abstract description 48
- 230000005611 electricity Effects 0.000 claims abstract description 78
- 230000001276 controlling effect Effects 0.000 claims description 24
- 230000006641 stabilisation Effects 0.000 claims description 7
- 238000011105 stabilization Methods 0.000 claims description 7
- 230000009466 transformation Effects 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 10
- 239000003792 electrolyte Substances 0.000 abstract description 6
- 238000007599 discharging Methods 0.000 description 5
- 230000000087 stabilizing effect Effects 0.000 description 5
- 230000001131 transforming effect Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000006258 conductive agent Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000013021 overheating Methods 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
- H01M10/61—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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- 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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- 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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
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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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Abstract
The invention relates to a heating method of an electric storage device, a heating system of the electric storage device and a storage medium. The heating method of the electric storage device includes the following steps. And acquiring the temperature of the electricity storage device to be heated, and judging whether the temperature is less than a threshold value. If so, acquiring the voltage of the electricity storage device to be heated and the voltage of the standby electricity storage device. And controlling the standby power storage device and the power storage device to be heated to exchange electric energy according to the voltage of the power storage device to be heated and the voltage of the standby power storage device so as to heat the power storage device to be heated. The heating method can heat the electricity storage device to be heated, so that the temperature of the electricity storage device to be heated is increased, the activity of electrolyte in the electricity storage device to be heated is improved, the electricity storage device to be heated releases more electric quantity, and the driving mileage of the electric automobile is increased.
Description
Technical Field
The invention relates to the technical field of electric automobiles, in particular to a heating method of an electric storage device, a heating system of the electric storage device and a storage medium.
Background
The electric automobile is a new vehicle taking a power battery as an energy source, and has the advantages of simple structure, low noise, low price, no pollution and the like.
In an electric vehicle, a power battery is an important component. The power battery has a certain influence on the driving mileage, the service life and the safety of the electric automobile.
For example, in winter with lower temperature, the temperature of the power battery (battery pack) is also lower, which may reduce the activity of the electrolyte in the battery pack, thereby reducing the dischargeable amount of the battery pack and affecting the driving range of the electric vehicle.
Disclosure of Invention
In view of the above, it is necessary to provide a heating method for an electric storage device, a heating system for the electric storage device, and a storage medium, in order to solve the problem that the low temperature lowers the activity of an electrolyte in a battery pack and affects the driving range of an electric vehicle.
The embodiment of the application provides a heating method of an electric storage device, which comprises the following steps.
And acquiring the temperature of the electricity storage device to be heated, and judging whether the temperature is less than a threshold value. If so, acquiring the voltage of the electricity storage device to be heated and the voltage of the standby electricity storage device. And controlling the standby power storage device and the power storage device to be heated to exchange electric energy according to the voltage of the power storage device to be heated and the voltage of the standby power storage device so as to heat the power storage device to be heated.
In the above heating method, after the temperature of the electric storage device to be heated is acquired, if the temperature is less than the threshold value, the voltage of the electric storage device to be heated and the voltage of the backup electric storage device are continuously acquired. Next, the electric energy exchange between the backup electric storage device and the electric storage device to be heated may be controlled according to the voltage of the electric storage device to be heated and the voltage of the backup electric storage device. The electric energy exchange means that the two electric storage devices are charged and discharged mutually. Can generate heat at the in-process of charging and discharging each other, just so can heat the accumulate device of treating heating, make the temperature of the accumulate device of treating heating rise to improve the activity of electrolyte in the accumulate device of treating heating, make the accumulate device of treating heating release more electric quantity, with the mileage that promotes electric automobile and the life of the accumulate device of treating heating.
In one embodiment, controlling the electric energy exchange between the backup electric storage device and the electric storage device to be heated according to the voltage of the electric storage device to be heated and the voltage of the backup electric storage device includes the following steps.
And judging whether the voltage of the standby power storage device is greater than the voltage of the power storage device to be heated. And if so, controlling the standby power storage device to discharge the power storage device to be heated. If not, increasing the voltage of the standby electricity storage device so as to control the standby electricity storage device to discharge electricity to the electricity storage device to be heated again after the voltage of the standby electricity storage device is larger than the voltage of the electricity storage device to be heated.
In the heating method, under the condition that the voltage of the standby power storage device is greater than the voltage of the power storage device to be heated, the standby power storage device is directly controlled to discharge electricity to the power storage device to be heated so as to heat the power storage device to be heated. In the case where the voltage of the backup electric storage device is less than or equal to the voltage of the electric storage device to be heated, the voltage of the backup electric storage device is first increased. After the voltage of the standby electricity storage device is greater than the voltage of the electricity storage device to be heated, the standby electricity storage device can be controlled again to discharge electricity to the electricity storage device to be heated, so that the temperature of the electricity storage device to be heated is increased, the electricity storage device to be heated releases more electric quantity, and the driving mileage of the electric automobile can be increased.
In one embodiment, the method of heating the electric storage device further comprises: before the standby power storage device is controlled to discharge the power storage device to be heated, the voltage of the standby power storage device is stabilized.
In the heating method, the voltage of the standby power storage device is stabilized, so that the voltage of the standby power storage device can be ensured to have higher stability when the standby power storage device discharges the power storage device to be heated.
In one embodiment, after controlling the electrical energy exchange between the backup electrical storage device and the electrical storage device to be heated to heat the electrical storage device to be heated, the method for heating the electrical storage device further includes: when the temperature reaches a threshold value, continuing to control the standby power storage device and the power storage device to be heated to exchange electric energy until a preset time length is reached; wherein the preset time period starts to be timed when the temperature is equal to the threshold value.
In the heating method, when the temperature reaches the threshold value, the standby power storage device and the power storage device to be heated can be continuously controlled to exchange electric energy until the preset time is reached. In this way, the temperature can be kept greater than or equal to the threshold value for a preset period of time and longer to operate the electric storage device to be heated at an appropriate temperature. In addition, the method is beneficial to protecting the power storage device to be heated while keeping the temperature, and the safety of the electric automobile is prevented from being influenced by excessive heating.
In one embodiment, the state of charge value of the to-be-heated electric storage device at full charge is greater than the state of charge value of the backup electric storage device at full charge, and the nominal charge capacities of the to-be-heated electric storage device and the backup electric storage device are the same.
In the heating method, the state of charge value of the to-be-heated power storage device at the full power is larger than that of the standby power storage device at the full power, and the nominal charge capacities of the to-be-heated power storage device and the standby power storage device are the same. Even if the electric storage device to be heated and the standby electric storage device are both in a full power state, a voltage difference can be formed between the two electric storage devices, so that electric energy can be exchanged between the two electric storage devices when the temperature is lower than a threshold value, and the electric storage device to be heated can be heated.
The embodiment of the application also provides a heating system of the electric storage device, which is used for realizing the heating method in some embodiments. The technical effects which can be realized by the heating method can be realized by the heating system. The heating system includes: the device comprises a to-be-heated power storage device, a standby power storage device, a temperature acquisition module, a voltage acquisition module and a controller.
The standby power storage device is arranged on one side of the power storage device to be heated and is connected with the power storage device to be heated.
The temperature acquisition module is connected with the to-be-heated power storage device and used for acquiring the temperature of the to-be-heated power storage device.
The voltage acquisition module is connected with the power storage device to be heated and the standby power storage device and is used for acquiring the voltage of the power storage device to be heated and the voltage of the standby power storage device.
The controller is connected with the temperature acquisition module, the voltage acquisition module, the to-be-heated power storage device and the standby power storage device and is used for controlling the standby power storage device and the to-be-heated power storage device to exchange electric energy according to the temperature, the voltage of the to-be-heated power storage device and the voltage of the standby power storage device so as to heat the to-be-heated power storage device.
In one embodiment, the controller is further configured to: and judging whether the temperature is less than a threshold value or not, and judging whether the voltage of the standby power storage device is greater than the voltage of the power storage device to be heated or not under the condition that the temperature is less than the threshold value.
If so, controlling the standby power storage device to discharge the power storage device to be heated so as to heat the power storage device to be heated.
If not, increasing the discharging voltage of the standby electricity storage device, and controlling the standby electricity storage device to discharge the electricity to the electricity storage device to be heated again to heat the electricity storage device to be heated after the voltage of the standby electricity storage device is larger than the voltage of the electricity storage device to be heated.
In one embodiment, the heating system of the electric storage device further comprises: and a voltage transformation and stabilization module.
The voltage transformation and stabilization module is connected with the electricity storage device to be heated and the standby electricity storage device and is used for regulating and controlling the voltage of the standby electricity storage device and the voltage of the electricity storage device to be heated.
In one embodiment, the number of the electric storage devices to be heated is plural, the number of the standby electric storage devices is plural, and the electric storage devices to be heated and the standby electric storage devices correspond to each other one by one. Therefore, the heating efficiency can be improved, and the electric quantity of the to-be-heated electric storage device can be released more quickly.
The present invention also provides a storage medium storing computer instructions that are suitable for being executed by a processor, and when the computer instructions are executed by the processor, the method for heating the power storage device in some embodiments is implemented.
The technical effects that can be achieved by the aforementioned heating method can also be achieved by the storage medium, and are not described herein again.
Drawings
Fig. 1 is a schematic flow chart illustrating a heating method of an electric storage device according to an embodiment;
FIG. 2 is a schematic flow chart illustrating another method for heating an electric storage device according to an embodiment;
fig. 3 is a block diagram of a heating system of an electric storage device according to an embodiment;
fig. 4 is a block diagram of a heating system of another electric storage device according to an embodiment.
Description of reference numerals:
100-a heating system of the electric storage device; 10-a power storage device to be heated; 20-a spare power storage device;
30-a temperature acquisition module; 40-a voltage acquisition module; 50-a controller; 60-voltage transformation and stabilization module.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown 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.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Where the terms "comprising," "having," and "including" are used herein, another element may be added unless an explicit limitation is used, such as "only," "consisting of … …," etc. Unless mentioned to the contrary, terms in the singular may include the plural and are not to be construed as being one in number.
The electric automobile is a new vehicle taking a power battery as an energy source, and has the advantages of simple structure, low noise, low price, no pollution and the like.
In an electric vehicle, a power battery is an important component. The power battery has a certain influence on the driving mileage, the service life and the safety of the electric automobile.
For example, in summer and winter, the vehicle occupant turns on the air conditioner to create a comfortable temperature environment, and the driving mileage of the electric vehicle is necessarily shortened along with the consumption of the electric quantity of the power battery in the process.
In addition, in winter with lower temperature, the influence of the power battery on the driving mileage is more prominent. In a low-temperature environment, the temperature of a power battery (battery pack) is also low, which can reduce the activity of an electrolyte in the battery pack, thereby reducing the dischargeable capacity of the battery pack and affecting the driving mileage of an electric vehicle.
The current solution is to set a heating film on the surface of a battery core in a battery pack to heat the battery pack, but the heating film also needs to be electrified to work, and the source of electric energy is the battery pack providing power. That is, the heating film may consume energy of the battery pack while heating the battery pack, which may also affect the driving range of the electric vehicle.
Based on this, the present application intends to provide a solution to the above technical problem, the details of which will be explained in the following embodiments.
As can be understood with reference to fig. 1 and 2, an embodiment of the present application provides a method for heating an electric storage device, which includes the following steps.
S100, acquiring the temperature of the power storage device to be heated, and judging whether the temperature is smaller than a threshold value.
If so, acquiring the voltage of the electricity storage device to be heated and the voltage of the standby electricity storage device.
In power battery technical field, electric core is minimum energy storage unit, can constitute the battery module after a plurality of electric core encapsulation, and the unified whole that several battery module is constituteed after the encapsulation is the battery package promptly. The power storage device in this application can be any one in electric core, battery module or the battery package. The to-be-heated power storage device is a device which needs to be heated in a low-temperature environment, and the standby power storage device is a device which heats the to-be-heated power storage device.
For example, the to-be-heated electric storage device in the present application may be a power cell, and the backup electric storage device may be a heating cell.
For example, the threshold may be set according to actual requirements, for example, 0 degrees celsius.
And S200, controlling the standby power storage device and the power storage device to be heated to exchange electric energy according to the voltage of the power storage device to be heated and the voltage of the standby power storage device so as to heat the power storage device to be heated.
In the above heating method, after the temperature of the electric storage device to be heated is acquired, if the temperature is less than the threshold value, the voltage of the electric storage device to be heated and the voltage of the backup electric storage device are continuously acquired. Next, the electric energy exchange between the backup electric storage device and the electric storage device to be heated may be controlled according to the voltage of the electric storage device to be heated and the voltage of the backup electric storage device. The electric energy exchange means that the two electric storage devices are charged and discharged mutually. Can generate heat at the in-process of charging and discharging each other, just so can heat the accumulate device of treating heating, make the temperature of the accumulate device of treating heating rise to improve the activity of electrolyte in the accumulate device of treating heating, make the accumulate device of treating heating release more electric quantity, with the mileage that promotes electric automobile and the life of the accumulate device of treating heating.
Referring to fig. 2, in an embodiment, controlling the standby power storage device to exchange electric energy with the power storage device to be heated according to the voltage of the power storage device to be heated and the voltage of the standby power storage device includes the following steps.
And judging whether the voltage of the standby power storage device is greater than the voltage of the power storage device to be heated.
And if so, controlling the standby power storage device to discharge the power storage device to be heated.
If not, increasing the voltage of the standby electricity storage device so as to control the standby electricity storage device to discharge electricity to the electricity storage device to be heated again after the voltage of the standby electricity storage device is larger than the voltage of the electricity storage device to be heated.
For example, increasing the voltage of the backup power storage device may be performed in various ways. For example, a transforming and voltage stabilizing module may be employed to increase the voltage of the backup power storage device. Or the standby power storage device is controlled to discharge to the standby power storage device, the standby power storage device can continuously provide electric quantity for the electric automobile in the process of discharging to the standby power storage device by the standby power storage device, and after a period of time, the voltage of the standby power storage device can be increased and is greater than the voltage of the standby power storage device.
In addition, when the voltage of the standby power storage device is increased by discharging the standby power storage device by the power storage device to be heated, a part of heat is generated, and the temperature of the power storage device to be heated can be increased to a certain extent.
In the heating method, under the condition that the voltage of the standby power storage device is greater than the voltage of the power storage device to be heated, the standby power storage device is directly controlled to discharge electricity to the power storage device to be heated so as to heat the power storage device to be heated. In the case where the voltage of the backup electric storage device is less than or equal to the voltage of the electric storage device to be heated, the voltage of the backup electric storage device is first increased. After the voltage of the standby electricity storage device is greater than the voltage of the electricity storage device to be heated, the standby electricity storage device can be controlled again to discharge electricity to the electricity storage device to be heated, so that the temperature of the electricity storage device to be heated is increased, the electricity storage device to be heated releases more electric quantity, and the driving mileage of the electric automobile can be increased.
In one embodiment, the method of heating the electric storage device further comprises: before the standby power storage device is controlled to discharge the power storage device to be heated, the voltage of the standby power storage device is stabilized.
In addition, when the voltage of the backup power storage device is increased in such a manner that the power storage device to be heated discharges the backup power storage device, the voltage of the power storage device to be heated may be stabilized.
In the heating method, the voltage of the standby power storage device is stabilized, so that the voltage of the standby power storage device can be ensured to have higher stability when the standby power storage device discharges the power storage device to be heated.
It is understood that overheating may occur if the to-be-heated electric storage device is continuously heated, which may affect the safety of the electric vehicle. Therefore, it is necessary to stop heating the electricity storage device to be heated at an appropriate time. The method for stopping heating can be preset according to actual conditions.
In an example, after controlling the backup electric storage device to exchange electric energy with the electric storage device to be heated to heat the electric storage device to be heated, the heating method of the electric storage device further includes: and when the temperature reaches a threshold value, continuing to control the standby power storage device and the to-be-heated power storage device to exchange electric energy until a preset time length is reached. Wherein the preset time period can be 3 minutes, 5 minutes or 10 minutes. In addition, it should be noted that the preset time period starts to be counted when the temperature is equal to the threshold value.
In one example, the threshold is 0 degrees celsius and the preset time period is 5 minutes. When the to-be-heated power storage device is heated to enable the temperature of the to-be-heated power storage device to reach 0 ℃, continuing to control the standby power storage device and the to-be-heated power storage device to exchange electric energy for 5 minutes, and immediately stopping heating after 5 minutes.
In the heating method, when the temperature reaches the threshold value, the standby power storage device and the power storage device to be heated can be continuously controlled to exchange electric energy until the preset time is reached. In this way, the temperature can be kept greater than or equal to the threshold value for a preset period of time and longer to operate the electric storage device to be heated at an appropriate temperature. In addition, the method is beneficial to protecting the power storage device to be heated while keeping the temperature, and the safety of the electric automobile is prevented from being influenced by excessive heating.
In one embodiment, the state of charge value of the to-be-heated electric storage device at full charge is greater than the state of charge value of the backup electric storage device at full charge, and the nominal charge capacities of the to-be-heated electric storage device and the backup electric storage device are the same.
Generally, the state of charge (SOC) is used to represent the available state of the remaining charge in the storage device, and the SOC is a percentage (ratio of the remaining charge to the nominal charge capacity) and ranges from 0% to 100%. Under the condition that the nominal charge capacity is the same, the fact that the SOC value of the electric storage device to be heated at the full power is larger than that of the standby electric storage device at the full power indicates that the voltage of the electric storage device to be heated is larger than that of the standby electric storage device.
In addition, the state of charge value at full charge in the embodiment of the present application is the highest state of charge value of the electric storage device.
For example, the state of charge value of the electric storage device to be heated at full power may be 100%, and the state of charge value of the backup electric storage device at full power may be 90%.
For example, the backup power storage device is prepared differently from the power storage device to be heated. The reserve electricity storage device may be prepared by reducing the amount of the conductive agent, reducing the amount of carbon coating, or increasing the resistance on the basis of the electricity storage device to be heated. Therefore, the state of charge value of the standby electricity storage device when the standby electricity storage device is fully charged is smaller than the state of charge value of the electricity storage device to be heated when the standby electricity storage device is fully charged, and a voltage difference can be formed between the two electricity storage devices.
In the heating method, the state of charge value of the to-be-heated power storage device at the full power is larger than that of the standby power storage device at the full power, and the nominal charge capacities of the to-be-heated power storage device and the standby power storage device are the same. Even if the electric storage device to be heated and the standby electric storage device are both in a full power state, a voltage difference can be formed between the two electric storage devices, so that electric energy can be exchanged between the two electric storage devices when the temperature is lower than a threshold value, and the electric storage device to be heated can be heated.
Referring to fig. 3, a heating system 100 of an electric storage device is further provided in the present embodiment for implementing the heating method in some embodiments. The technical effects which can be realized by the heating method can be realized by the heating system. The heating system 100 of the electric storage device includes: the power storage device to be heated 10, the backup power storage device 20, the temperature acquisition module 30, the voltage acquisition module 40, and the controller 50.
The standby power storage device 20 is disposed at one side of the power storage device 10 to be heated and connected to the power storage device 10 to be heated.
For example, the backup power storage device 20 may be attached to one side of the power storage device 10 to be heated and connected to the power storage device 10 to be heated.
The temperature obtaining module 30 is connected to the electric storage device 10 to be heated, and is used for obtaining the temperature of the electric storage device 10 to be heated.
The voltage obtaining module 40 is connected to the electric storage device 10 to be heated and the backup electric storage device 20, and is used for obtaining the voltage of the electric storage device 10 to be heated and the voltage of the backup electric storage device 20.
The controller 50 is connected to the temperature obtaining module 30, the voltage obtaining module 40, the to-be-heated power storage device 10, and the backup power storage device 20, and is configured to control the backup power storage device 20 to perform power exchange with the to-be-heated power storage device 10 according to the temperature, the voltage of the to-be-heated power storage device 10, and the voltage of the backup power storage device 20, so as to heat the to-be-heated power storage device 10.
In one embodiment, the controller 50 is further configured to: it is determined whether the temperature is less than the threshold value, and in the case where the temperature is less than the threshold value, it is determined whether the voltage of the backup electric storage device 20 is greater than the voltage of the electric storage device to be heated 10.
If so, the standby power storage device 20 is controlled to discharge the power storage device to be heated 10 to heat the power storage device to be heated 10.
If not, the voltage of the backup electric storage device 20 is increased, so that after the voltage of the backup electric storage device 20 is greater than the voltage of the electric storage device 10 to be heated, the backup electric storage device 20 is controlled to discharge electricity to the electric storage device 10 to be heated again, so as to heat the electric storage device 10 to be heated.
Referring to fig. 4, in one embodiment, the heating system 100 of the electric storage device further includes: and a voltage transformation and stabilization module 60.
The voltage transformation and stabilization module 60 has both a voltage transformation (voltage boosting or voltage reducing) function and a voltage stabilization function. Alternatively, the transforming and stabilizing module 60 may be a DC/DC converter.
Illustratively, the transforming and voltage stabilizing module 60 is connected to the electric storage device 10 to be heated and the backup electric storage device 20, and is used for regulating and controlling the voltages of the backup electric storage device 20 and the electric storage device 10 to be heated.
The transformer regulator 60 may regulate the voltage of the backup electric storage device 20 before controlling the backup electric storage device 20 to discharge the to-be-heated electric storage device 10. When the method of controlling the electric storage device to be heated 10 to discharge the backup electric storage device 20 is employed to increase the voltage of the backup electric storage device 20, the voltage regulator 60 may regulate the voltage of the electric storage device to be heated 10.
When it is necessary to increase the voltage of the backup electric storage device 20, the voltage of the backup electric storage device 20 may be boosted by the transformer regulator 60 as it is.
In one embodiment, the controller 50 is further connected to the transforming and voltage stabilizing module 60 for regulating and controlling the voltage of the backup electric storage device 20 and the electric storage device 10 to be heated through the transforming and voltage stabilizing module 60.
In one embodiment, the number of the electric storage devices 10 to be heated is plural, the number of the backup electric storage devices 20 is plural, and the electric storage devices 10 to be heated and the backup electric storage devices 20 correspond to each other one by one, that is, one backup electric storage device 20 is provided for each electric storage device 10 to be heated. Thus, the heating efficiency can be improved, and the electric storage device 10 to be heated can release the discharge amount more quickly.
The present invention also provides a storage medium storing computer instructions that are suitable for being executed by a processor, and when the computer instructions are executed by the processor, the method for heating the power storage device in some embodiments is implemented. The technical effects that can be achieved by the aforementioned heating method can also be achieved by the storage medium, and are not described herein again.
In one embodiment, the processor may be implemented by a general-purpose integrated circuit chip or an application-specific integrated circuit chip, for example, the integrated circuit chip may be disposed on a motherboard, for example, a storage medium, a power circuit, and the like may also be disposed on the motherboard; further, a processor may also be implemented by circuitry, or in software, hardware (circuitry), firmware, or any combination thereof.
In one embodiment, the processor may also be a central processing unit, a microprocessor, such as an X86 processor, an ARM processor, or may be a Graphics Processor (GPU) or Tensor Processor (TPU), or may be a Digital Signal Processor (DSP), or the like.
The storage medium used in the embodiments provided herein may each include at least one of a nonvolatile and a volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
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 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 method of heating an electric storage device, comprising:
acquiring the temperature of a power storage device to be heated, and judging whether the temperature is less than a threshold value;
if so, acquiring the voltage of the electricity storage device to be heated and the voltage of the standby electricity storage device;
and controlling the standby electricity storage device and the electricity storage device to be heated to exchange electric energy according to the voltage of the electricity storage device to be heated and the voltage of the standby electricity storage device so as to heat the electricity storage device to be heated.
2. The method for heating an electricity storage device according to claim 1, wherein said controlling the exchange of electric energy between the electricity storage device for standby and the electricity storage device for heating in accordance with the voltage of the electricity storage device for heating and the voltage of the electricity storage device for standby comprises:
judging whether the voltage of the standby power storage device is larger than the voltage of the power storage device to be heated;
if so, controlling the standby power storage device to discharge the power storage device to be heated;
if not, increasing the voltage of the standby electricity storage device so as to control the standby electricity storage device to discharge electricity to the electricity storage device to be heated again after the voltage of the standby electricity storage device is larger than the voltage of the electricity storage device to be heated.
3. The method for heating an electric storage device according to claim 2, wherein a voltage of the backup electric storage device is stabilized before the backup electric storage device is controlled to discharge the electric storage device to be heated.
4. The method for heating an electric storage device according to claim 1, wherein after controlling the exchange of electric power between the backup electric storage device and the electric storage device to be heated to heat the electric storage device to be heated, the method for heating an electric storage device further comprises:
when the temperature reaches the threshold value, continuing to control the standby power storage device and the to-be-heated power storage device to exchange electric energy until a preset time length is reached;
wherein the preset time period starts timing when the temperature is equal to the threshold value.
5. The method for heating an electric storage device according to claim 1, wherein a state of charge value of the electric storage device to be heated at full power is larger than a state of charge value of the backup electric storage device at full power, and nominal charge capacities of the electric storage device to be heated and the backup electric storage device are the same.
6. A heating system for an electric storage device, comprising:
a power storage device to be heated;
the standby power storage device is arranged on one side of the power storage device to be heated and is connected with the power storage device to be heated;
the temperature acquisition module is connected with the power storage device to be heated and is used for acquiring the temperature of the power storage device to be heated;
the voltage acquisition module is connected with the power storage device to be heated and the standby power storage device and is used for acquiring the voltage of the power storage device to be heated and the voltage of the standby power storage device;
and the controller is connected with the temperature acquisition module, the voltage acquisition module, the to-be-heated power storage device and the standby power storage device, and is used for controlling the standby power storage device and the to-be-heated power storage device to exchange electric energy according to the temperature, the voltage of the to-be-heated power storage device and the voltage of the standby power storage device so as to heat the to-be-heated power storage device.
7. The heating system of an electric storage device according to claim 6, wherein the controller is further configured to:
judging whether the temperature is smaller than a threshold value or not, and judging whether the voltage of the standby power storage device is larger than the voltage of the power storage device to be heated or not under the condition that the temperature is smaller than the threshold value;
if so, controlling the standby power storage device to discharge the power storage device to be heated so as to heat the power storage device to be heated;
if not, increasing the voltage of the standby power storage device, and controlling the standby power storage device to discharge to the power storage device to be heated again to heat the power storage device to be heated after the voltage of the standby power storage device is larger than the voltage of the power storage device to be heated.
8. The heating system for an electric storage device as set forth in claim 7, further comprising:
and the voltage transformation and stabilization module is connected with the power storage device to be heated and the standby power storage device and is used for regulating and controlling the voltage of the standby power storage device and the power storage device to be heated.
9. The heating system of an electric storage device as claimed in any one of claims 6 to 8, wherein the number of the electric storage devices to be heated is plural, the number of the backup electric storage devices is plural, and the electric storage devices to be heated and the backup electric storage devices correspond to each other one by one.
10. A storage medium storing computer instructions adapted to be executed by a processor, wherein the computer instructions, when executed by the processor, implement the method of heating the power storage device according to any one of claims 1 to 5.
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