CN114030389A - Electric vehicle battery thermal management control method and device - Google Patents
Electric vehicle battery thermal management control method and device Download PDFInfo
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- CN114030389A CN114030389A CN202111386169.1A CN202111386169A CN114030389A CN 114030389 A CN114030389 A CN 114030389A CN 202111386169 A CN202111386169 A CN 202111386169A CN 114030389 A CN114030389 A CN 114030389A
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000007599 discharging Methods 0.000 claims abstract description 112
- 230000033228 biological regulation Effects 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 47
- 238000001816 cooling Methods 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000004364 calculation method Methods 0.000 claims description 8
- 230000004913 activation Effects 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 5
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- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
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- 238000003912 environmental pollution Methods 0.000 description 1
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—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
- B60L58/26—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 cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The embodiment of the application provides an electric vehicle battery thermal management control method and device, wherein in the electric vehicle battery thermal management control method, the current power battery temperature, the actual battery charging and discharging power and the allowable battery charging and discharging power are obtained; judging the temperature range of the current power battery temperature; judging the actual charging and discharging power of the battery and the preset power threshold value; and determining the starting time of the battery thermal management system of the electric automobile according to the judgment result, and starting the battery thermal management system of the electric automobile. And comprehensively judging whether the battery thermal management system is started and the starting time according to the temperature of the battery, the actual charging and discharging power of the battery and the allowable charging and discharging power of the battery, so that advanced regulation is realized, and the energy consumption is optimized.
Description
[ technical field ] A method for producing a semiconductor device
The application relates to the technical field of electric automobiles, in particular to a battery thermal management control method and device for an electric automobile.
[ background of the invention ]
Because of the energy shortage and the environmental pollution caused by the traditional fuel vehicle, the electric vehicle gets more and more attention with its unique advantages, wherein, the power battery pack is the main energy storage element of the whole vehicle, and the temperature in the battery pack greatly influences the performance, reliability and service life of the battery core. However, it is important to maintain the battery temperature within an appropriate range because the battery activity is reduced and the battery life is shortened even when the temperature of the battery pack is too high or too low, which may cause irreversible damage to the battery. The current technology generally depends on the temperature of the battery to judge and control: when the temperature of the battery exceeds a set threshold value, cooling the battery; when the temperature of the battery is lower than a set threshold value, the battery is heated, however, the control method has the problems of regulation lag and high energy consumption.
Therefore, in order to protect the performance of the battery and prolong the service life of the battery, a technical scheme for thermal management control of the battery of the electric vehicle needs to be proposed urgently.
[ summary of the invention ]
The embodiment of the invention provides a battery thermal management control method and device for an electric automobile. The battery is protected from being damaged, and the service life of the battery is prolonged.
In a first aspect, an embodiment of the present invention provides an electric vehicle battery thermal management control method, which is applied to a battery thermal management system of an electric vehicle, where the battery thermal management system adjusts a temperature according to a battery temperature of the electric vehicle, and the method includes:
acquiring the current power battery temperature, the actual charge-discharge power and the allowable charge-discharge power of the battery;
judging the temperature range of the current power battery temperature, wherein the temperature range is calculated according to the battery SOC and the allowable charging and discharging power of the battery;
judging the actual charging and discharging power of the battery and a preset power threshold value, wherein the preset power threshold value is different in different temperature ranges;
and determining the starting time of the battery thermal management system according to the judgment result, and starting the battery thermal management system according to the starting time.
According to the battery thermal management control method for the electric automobile, whether the battery thermal management system is started and the starting time are judged according to the battery temperature and the actual charging and discharging power of the battery, and the problem of adjustment lag only depending on the battery temperature is solved.
In one possible implementation manner, determining the starting time of the battery thermal management system according to the judgment result includes:
when the actual charging and discharging power of the battery is larger than the preset power threshold, acquiring the duration of the actual charging and discharging power of the battery;
and judging the duration and the preset time threshold, wherein the preset time threshold is different in different temperature ranges.
In one possible implementation manner, when the temperature of the power battery is in a comfortable temperature range, if the actual charging and discharging power of the battery is smaller than the preset power threshold P1, the battery thermal management system is not started, and if the actual charging and discharging power of the battery is larger than the preset power threshold P1 and the duration is larger than the preset time threshold T1, the battery thermal management system is started;
when the temperature of the power battery is in a high-temperature range, if the actual charging and discharging power of the battery is smaller than the preset power threshold value P2, the battery thermal management system is started, and if the actual charging and discharging power of the battery is larger than the preset power threshold value P2 and the duration is larger than the preset time threshold value T2, the battery thermal management system is started.
In one possible implementation manner, when the temperature of the power battery is in a low-temperature range, if the actual charging and discharging power of the battery is smaller than the preset power threshold P3, the battery thermal management system is started, and if the actual charging and discharging power of the battery is larger than the preset power threshold P3 and the duration is larger than the preset time threshold T3, the battery thermal management system is started.
In one possible implementation manner, starting the battery thermal management system includes:
dynamically controlling the temperature of the inlet water of the power battery;
when the temperature of the power battery is in the comfortable temperature range, if the actual charging and discharging power of the battery is smaller than the preset power threshold value P1, not starting the battery thermal management system, if the actual charging and discharging power of the battery is larger than the preset power threshold value P1 and the duration time is larger than the preset time threshold value T1, starting the battery thermal management system, dynamically controlling the water inlet temperature Tin1 to cool the battery according to the temperature of the power battery and the actual charging and discharging power of the battery, and if the actual charging and discharging power of the battery is increased or the temperature of the power battery is increased at the moment, controlling the water inlet temperature Tin1 to gradually decrease;
when the battery temperature is in during the high temperature scope, if the battery actual charge-discharge power is less than preset power threshold P2, then open battery thermal management system, according to power battery temperature calculation and control battery temperature of intaking Tin2 for the battery cooling, if the battery actual charge-discharge power is greater than preset power threshold P2, and duration is greater than preset time threshold T2, then open battery thermal management system, come dynamic control temperature of intaking Tin3 for the battery cooling according to power battery temperature with the battery actual charge-discharge power, if at this moment the battery actual charge-discharge power increases or power battery temperature rises, then control temperature of intaking Tin3 reduces gradually.
In one possible implementation manner, when the battery temperature is in the low-temperature range, if the actual charging and discharging power of the battery is smaller than the preset power threshold P3, the battery thermal management system is started, the battery water inlet temperature Tin4 is calculated and controlled according to the power battery temperature to heat the battery, if the actual charging and discharging power of the battery is larger than the preset power threshold P3, and the duration time is longer than the preset time threshold T3, the battery thermal management system is started, the water inlet temperature Tin5 is dynamically controlled to heat the battery according to the power battery temperature and the actual charging and discharging power of the battery, and the water inlet temperature Tin5 is smaller than the water inlet temperature Tin4, and the battery is charged and discharged with high power and self-heating at the moment.
In a second aspect, an embodiment of the present invention provides an electric vehicle battery thermal management control apparatus, where the apparatus includes:
the acquisition module is used for acquiring the current power battery temperature, the actual charge-discharge power of the battery and the allowable charge-discharge power of the battery;
the judging module is used for judging the temperature range of the current power battery temperature, wherein the temperature range is calculated according to the battery SOC and the allowable charging and discharging power of the battery;
the device is also used for judging the actual charging and discharging power of the battery and the size of a preset power threshold, wherein the preset power threshold is different in different temperature ranges;
and the starting module is used for determining the starting time of the battery thermal management system of the electric automobile according to the judgment result and starting the battery thermal management system.
In one possible implementation manner, the obtaining module is further configured to obtain a duration of the actual charging and discharging power of the battery when the actual charging and discharging power of the battery is greater than the preset power threshold;
the judging module is further configured to judge the duration and a preset time threshold, where the preset time threshold is different in different temperature ranges.
In one possible implementation manner, the starting module is configured to, when the temperature of the power battery is within a comfortable temperature range, if the actual charging and discharging power of the battery is less than the preset power threshold P1, not start the battery thermal management system, and if the actual charging and discharging power of the battery is greater than the preset power threshold P1 and the duration is greater than the preset time threshold T1, start the battery thermal management system;
when the temperature of the power battery is in a high-temperature range, if the actual charging and discharging power of the battery is smaller than the preset power threshold value P2, the battery thermal management system is started, and if the actual charging and discharging power of the battery is larger than the preset power threshold value P2 and the duration time is larger than the preset time threshold value T2, the battery thermal management system is started.
In one possible implementation manner, the starting module is configured to, when the temperature of the power battery is in a low-temperature range, start the battery thermal management system if the actual charging and discharging power of the battery is smaller than the preset power threshold P3, and start the battery thermal management system if the actual charging and discharging power of the battery is greater than the preset power threshold P3 and the duration is greater than the preset time threshold T3.
In one possible implementation manner, the starting module is further configured to dynamically control the temperature of the inlet water of the power battery;
when the temperature of the power battery is in the comfortable temperature range, if the actual charging and discharging power of the battery is smaller than the preset power threshold value P1, not starting the battery thermal management system, if the actual charging and discharging power of the battery is larger than the preset power threshold value P1 and the duration time is larger than the preset time threshold value T1, starting the battery thermal management system, dynamically controlling the water inlet temperature Tin1 to cool the battery according to the temperature of the power battery and the actual charging and discharging power of the battery, and if the actual charging and discharging power of the battery is increased or the temperature of the power battery is increased at the moment, controlling the water inlet temperature Tin1 to gradually decrease;
when the battery temperature is in during the high temperature scope, if the battery actual charge-discharge power is less than preset power threshold P2, then open battery thermal management system, according to power battery temperature calculation and control battery temperature of intaking Tin2 for the battery cooling, if the battery actual charge-discharge power is greater than preset power threshold P2, and duration is greater than preset time threshold T2, then open battery thermal management system, come dynamic control temperature of intaking Tin3 for the battery cooling according to power battery temperature with the battery actual charge-discharge power, if at this moment the battery actual charge-discharge power increases or power battery temperature rises, then control temperature of intaking Tin3 reduces gradually.
In one possible implementation manner, the starting module is further configured to, when the battery temperature is in the low-temperature range, if the actual battery charging and discharging power is smaller than the preset power threshold P3, then start the battery thermal management system, calculate and control the battery water inlet temperature Tin4 to heat the battery according to the power battery temperature, if the actual battery charging and discharging power is greater than the preset power threshold P3, and the duration is greater than the preset time threshold T3, then start the battery thermal management system, dynamically control the water inlet temperature Tin5 to heat the battery according to the power battery temperature and the actual battery charging and discharging power, and the water inlet temperature Tin5 is smaller than the water inlet temperature Tin4, and rely on the high-power battery charging and discharging self-heating at this time.
It should be understood that the second aspect of the embodiment of the present application is consistent with the technical solution of the first aspect of the embodiment of the present invention, and beneficial effects achieved by various aspects and corresponding possible implementation manners are similar, and are not described again.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a method for controlling thermal management of a battery of an electric vehicle according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a battery thermal management control device according to an embodiment of the present invention.
[ detailed description ] embodiments
For better understanding of the technical solutions in the present specification, the following detailed description of the embodiments of the present application is provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only a few embodiments of the present specification, and not all embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments in the present specification without any inventive step are within the scope of the present specification.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the specification. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
In the prior art, the temperature of a battery is generally relied on for judgment and control: when the temperature of the battery exceeds a set threshold value, cooling the battery; when the temperature of the battery is lower than a set threshold value, the battery is heated, however, the control method has the problems of regulation lag and high energy consumption.
Referring to fig. 1, fig. 1 is a schematic flow chart of a battery thermal management control method for an electric vehicle according to an embodiment of the present invention, where the method is applied to a battery thermal management system of the electric vehicle, and the battery thermal management system adjusts a temperature according to a battery temperature of the electric vehicle, and the method includes:
step S11: acquiring the current power battery temperature, the actual charge-discharge power and the allowable charge-discharge power of the battery;
the current power battery temperature is obtained through a sensor in the power battery, the actual charge-discharge power is obtained through calculation of battery bus voltage U and battery bus current I, and the battery allowable charge-discharge power is obtained through calculation of battery bus voltage U, battery bus current I, battery temperature, a battery SOC value and the maximum voltage difference of a battery monomer.
Step S12: judging the temperature range of the current power battery temperature, wherein the temperature range is calculated according to the battery SOC and the allowed charging and discharging power of the battery, and the battery SOC is a charge state and represents the percentage of the remaining available battery amount of the battery in the total capacity;
judging the actual charge and discharge power and a preset power threshold value, wherein the preset power threshold value is different in different temperature ranges;
step S13: and determining the starting time of the battery thermal management system of the electric automobile according to the judgment result, and starting the battery thermal management system.
According to the battery temperature, the actual charge-discharge power of the battery and the allowable charge-discharge power of the battery, whether the battery thermal management system is started or not and the time for starting the battery thermal management system are comprehensively judged, the problem that the battery temperature is adjusted only according to the battery temperature is solved, and the advanced adjustment of the battery temperature is realized.
In order to save energy consumption, the embodiment of the invention sets the starting time of the battery thermal management system.
Optionally, when the actual charging and discharging power of the battery is greater than the preset power threshold, obtaining a duration of the actual charging and discharging power of the battery;
and judging the duration and the preset time threshold, wherein the preset time threshold is different in different temperature ranges.
And the battery thermal management system is started only when the working time of the battery under the power exceeds the preset time threshold value under the condition that the battery is larger than the power threshold value, so that the consumption of redundant energy is avoided, the energy consumption is reduced, and the driving range of the electric automobile is improved.
After the battery thermal management system of the electric vehicle is started, the battery is heated or cooled by controlling the water inlet temperature of the battery, and other modes such as air cooling, direct cooling and the like can be adopted as long as the heating and cooling effects of the power battery can be achieved, and the specific mode is not limited by the invention. The embodiment of the invention gives an example of heating and cooling the battery in the manner of the cooling liquid.
When the temperature of the power battery is in the comfortable temperature range, for example, 0-40 ℃, if the actual charging and discharging power of the battery is smaller than the preset power threshold value P1, the battery thermal management system is not started, if the actual charging and discharging power of the battery is larger than the preset power threshold value P1, and the duration is larger than the preset time threshold value T1, the battery thermal management system is started, at this time, the battery thermal management system is a heat dissipation system, the water inlet temperature Tin1 is dynamically controlled to cool the battery according to the temperature of the power battery and the actual charging and discharging power of the battery, and if the actual charging and discharging power of the battery is increased or the temperature of the power battery is increased at this time, the water inlet temperature Tin1 is controlled to be gradually reduced, and the power distributed to cool the battery is gradually increased.
In the embodiment of the invention, the temperature range is obtained by calculation according to the SOC of the battery and the allowable charging and discharging power of the battery and is a dynamic value, the temperature range is calculated according to the actual condition of the battery, and the calculated comfortable temperature range is more accurate; and setting the time threshold, and when the power duration exceeds the preset time threshold, indicating that the temperature rise of the battery may exceed a comfortable temperature range, starting the battery thermal management system to cool the battery, so that energy consumption is saved, and the temperature of the battery is adjusted in advance.
When the battery temperature is in the high-temperature range, for example, exceeding 40 ℃, if the actual charging and discharging power of the battery is less than the preset power threshold P2, the battery thermal management system is started, at this time, the battery inlet water temperature Tin2 is calculated and controlled according to the power battery temperature to cool the battery, if the actual charging and discharging power of the battery is greater than the preset power threshold P2, and the duration time is greater than the preset time threshold T2, the battery thermal management system is started, at this time, the battery thermal management system is a heat dissipation system, the inlet water temperature Tin3 is dynamically controlled to cool the battery according to the power battery temperature and the actual charging and discharging power of the battery, at this time, if the actual charging and discharging power of the battery is increased or the power battery temperature is raised, the inlet water temperature Tin3 is controlled to be gradually reduced, the power allocated to the cooling of the battery is increased step by step.
The water inlet temperature of the battery is gradually reduced according to the increase of the temperature of the battery and the actual charging and discharging power of the battery, the cooling effect is better than that of a cooling liquid with constant temperature, and meanwhile, the power is also properly distributed.
When the battery temperature is in the low-temperature range, for example, lower than 0 ℃, if the actual charging and discharging power of the battery is less than the preset power threshold P3, starting the battery thermal management system, wherein the battery thermal management system is a heating system, calculating and controlling the battery inlet water temperature Tin4 to heat the battery according to the temperature of the power battery, if the actual charging and discharging power of the battery is greater than the preset power threshold P3 and the duration is greater than the preset time threshold T3, starting the battery thermal management system, wherein the battery thermal management system is a heating system, dynamically controlling the inlet water temperature Tin5 to heat the battery according to the power battery temperature and the actual charging and discharging power of the battery, and the water inlet temperature Tin5 is less than the water inlet temperature Tin4, and the battery is charged and discharged with high power and self-heating at the moment.
The battery temperature is raised by means of high-power charging and discharging self-heating of the battery, the heating power of the battery thermal management system is reduced, and the effect of saving energy consumption is achieved.
Fig. 2 shows an embodiment of the present invention, which further provides a device for implementing the technical solution of the above-mentioned method embodiment, in the embodiment of the present invention, the battery thermal management control device 100 includes an obtaining module 101, a determining module 102, and an opening module 103; the acquisition module is used for acquiring the current power battery temperature, the actual battery charge and discharge power and the allowable battery charge and discharge power; the judging module is used for judging the temperature range of the current power battery temperature, wherein the temperature range is calculated according to the battery SOC and the allowable charging and discharging power of the battery; judging the actual charging and discharging power of the battery and a preset power threshold value, wherein the preset power threshold value is different in different temperature ranges; the starting module is used for determining the starting time of the battery thermal management system of the electric automobile according to the judgment result and starting the battery thermal management system.
In an optional manner, the obtaining module is further configured to obtain a duration of the actual charging and discharging power of the battery when the actual charging and discharging power of the battery is greater than the preset power threshold;
the judging module is further configured to judge the duration and a preset time threshold, where the preset time threshold is different in different temperature ranges.
In an optional manner, the starting module is configured to, when the temperature of the power battery is within a comfortable temperature range, if the actual charging and discharging power of the battery is less than the preset power threshold P1, not start the battery thermal management system, and if the actual charging and discharging power of the battery is greater than the preset power threshold P1 and the duration is greater than the preset time threshold T1, start the battery thermal management system;
when the temperature of the power battery is in a high-temperature range, if the actual charging and discharging power of the battery is smaller than the preset power threshold value P2, the automobile battery thermal management system is started, and if the actual charging and discharging power of the battery is larger than the preset power threshold value P2 and the duration time is larger than the preset time threshold value T2, the battery thermal management system is started.
In an optional manner, the starting module is configured to, when the temperature of the power battery is in a low-temperature range, start the battery thermal management system if the actual charging and discharging power of the battery is less than the preset power threshold P3, and start the battery thermal management system if the actual charging and discharging power of the battery is greater than the preset power threshold P3 and the duration is greater than the preset time threshold T3.
In an optional mode, the starting module is further used for dynamically controlling the temperature of the inlet water of the power battery;
when the temperature of the power battery is in the comfortable temperature range, if the actual charging and discharging power of the battery is smaller than the preset power threshold value P1, not starting the battery thermal management system, if the actual charging and discharging power of the battery is larger than the preset power threshold value P1 and the duration time is larger than the preset time threshold value T1, starting the battery thermal management system, dynamically controlling the inlet water temperature Tin1 according to the temperature of the power battery and the actual charging and discharging power of the battery, and if the actual charging and discharging power of the battery is increased or the temperature of the power battery is increased at the moment, controlling the inlet water temperature Tin1 to be gradually reduced;
when the battery temperature is in the high-temperature range, if the actual charging and discharging power of the battery is smaller than the preset power threshold value P2, the battery thermal management system is started, the battery water inlet temperature Tin2 is calculated and controlled according to the power battery temperature, if the actual charging and discharging power of the battery is larger than the preset power threshold value P2, and the duration time is larger than the preset time threshold value T2, the battery thermal management system is started, the water inlet temperature Tin3 is dynamically controlled according to the power battery temperature and the actual charging and discharging power of the battery, and if the actual charging and discharging power of the battery is increased or the power battery temperature is increased at the moment, the water inlet temperature Tin3 is controlled to be gradually reduced.
In an optional mode, the starting module is further configured to, when the battery temperature is in the low-temperature range, if the actual charging and discharging power of the battery is smaller than the preset power threshold P3, start the battery thermal management system, calculate and control the battery inlet water temperature Tin4 according to the power battery temperature, if the actual charging and discharging power of the battery is greater than the preset power threshold P3, and the duration is greater than the preset time threshold T3, start the battery thermal management system, dynamically control the inlet water temperature Tin5 according to the power battery temperature and the actual charging and discharging power of the battery, and the inlet water temperature Tin5 is less than the inlet water temperature Tin4, and at this time, the battery is charged and discharged with self-heating by means of high power of the battery.
The apparatus provided in the embodiment shown in fig. 2 may be used to implement the technical solution of the method embodiment shown above, and further reference may be made to the related description in the method embodiment for realizing the principle and the technical effect, which are not described herein again.
The foregoing description has been directed to specific embodiments of this disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
In the description of the specification, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means 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 specification. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present description in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present description.
In the several embodiments provided in the present specification, it should be understood that the disclosed apparatus, device and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the units is only one logical functional division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
In addition, functional units in the embodiments of the present description may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The above description is only a preferred embodiment of the present disclosure, and should not be taken as limiting the present disclosure, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (12)
1. The battery thermal management control method for the electric automobile is characterized by being applied to a battery thermal management system of the electric automobile, wherein the battery thermal management system adjusts the temperature according to the battery temperature of the electric automobile, and the method comprises the following steps:
acquiring the current power battery temperature, the actual charging and discharging power of the battery, the SOC of the battery and the allowable charging and discharging power of the battery;
judging the temperature range of the current power battery temperature, wherein the temperature range is calculated according to the battery SOC and the allowable charging and discharging power of the battery;
judging the actual charging and discharging power of the battery and a preset power threshold value, wherein the preset power threshold value is different in different temperature ranges;
and determining the starting time of the battery thermal management system according to the judgment result, and starting the battery thermal management system according to the starting time.
2. The method of claim 1, wherein determining the battery thermal management system startup time according to the determination result comprises:
when the actual charging and discharging power of the battery is larger than the preset power threshold, acquiring the duration of the actual charging and discharging power of the battery;
and judging the duration and the preset time threshold, wherein the preset time threshold is different in different temperature ranges.
3. The method of claim 2, comprising:
when the temperature of the power battery is in a comfortable temperature range, if the actual charging and discharging power of the battery is smaller than the preset power threshold value P1, the battery thermal management system is not started, and if the actual charging and discharging power of the battery is larger than the preset power threshold value P1 and the duration time is larger than the preset time threshold value T1, the battery thermal management system is started;
when the temperature of the power battery is in a high-temperature range, if the actual charging and discharging power of the battery is smaller than the preset power threshold value P2, the battery thermal management system is started, and if the actual charging and discharging power of the battery is larger than the preset power threshold value P2 and the duration is larger than the preset time threshold value T2, the battery thermal management system is started.
4. The method of claim 3, further comprising:
when the temperature of the power battery is in a low-temperature range, if the actual charging and discharging power of the battery is smaller than the preset power threshold value P3, the thermal management system is started, and if the actual charging and discharging power of the battery is larger than the preset power threshold value P3 and the duration is larger than the preset time threshold value T3, the thermal management system is started.
5. The method of any of claims 1-4, wherein turning on the battery thermal management system comprises:
dynamically controlling the temperature of the inlet water of the power battery;
when the temperature of the power battery is in the comfortable temperature range, if the actual charging and discharging power of the battery is smaller than the preset power threshold value P1, not starting the battery thermal management system, if the actual charging and discharging power of the battery is larger than the preset power threshold value P1 and the duration time is larger than the preset time threshold value T1, starting the battery thermal management system, dynamically controlling the water inlet temperature Tin1 to cool the battery according to the temperature of the power battery and the actual charging and discharging power of the battery, and if the actual charging and discharging power of the battery is increased or the temperature of the power battery is increased at the moment, controlling the water inlet temperature Tin1 to gradually decrease;
when the battery temperature is in during the high temperature scope, if the battery actual charge-discharge power is less than preset power threshold P2, then open battery thermal management system, according to power battery temperature calculation and control battery temperature of intaking Tin2 for the battery cooling, if the battery actual charge-discharge power is greater than preset power threshold P2, and duration is greater than preset time threshold T2, then open battery thermal management system, come dynamic control temperature of intaking Tin3 for the battery cooling according to power battery temperature with the battery actual charge-discharge power, if at this moment the battery actual charge-discharge power increases or power battery temperature rises, then control temperature of intaking Tin3 reduces gradually.
6. The method of claim 5, further comprising:
when the battery temperature is in during the low temperature range, if the actual charge-discharge power of battery is less than preset power threshold P3, then open battery thermal management system, according to power battery temperature calculation and control battery temperature Tin4 give the battery heating, if the actual charge-discharge power of battery is greater than preset power threshold P3, and duration is greater than preset time threshold T3, then open battery thermal management system, according to power battery temperature with the actual charge-discharge power of battery comes dynamic control temperature Tin5 and heats for the battery, just water temperature Tin5 is less than water temperature Tin4, relies on the high-power charge-discharge self-heating of battery this moment.
7. The utility model provides an electric automobile battery thermal management controlling means which characterized in that is applied to electric automobile's battery thermal management system, battery thermal management system carries out temperature regulation according to electric automobile's battery temperature, the device includes:
the acquisition module is used for acquiring the current power battery temperature, the actual charge-discharge power of the battery and the allowable charge-discharge power of the battery;
the judging module is used for judging the temperature range of the current power battery temperature, wherein the temperature range is calculated according to the battery SOC and the allowable charging and discharging power of the battery;
judging the actual charging and discharging power of the battery and a preset power threshold value, wherein the preset power threshold value is different in different temperature ranges;
and the starting module is used for determining the starting time of the battery thermal management system of the electric automobile according to the judgment result and starting the battery thermal management system.
8. The device according to claim 7, wherein the obtaining module is further configured to obtain a duration of the actual charging and discharging power of the battery when the actual charging and discharging power of the battery is greater than the preset power threshold;
the judging module is further configured to judge the duration and a preset time threshold, where the preset time threshold is different in different temperature ranges.
9. The device according to any one of claims 7 to 8, wherein the starting module is configured to, when the temperature of the power battery is in a comfortable temperature range, not start the battery thermal management system if the actual charging and discharging power of the battery is less than the preset power threshold P1, and start the battery thermal management system if the actual charging and discharging power of the battery is greater than the preset power threshold P1 and the duration is greater than the preset time threshold T1;
when the temperature of the power battery is in a high-temperature range, if the actual charging and discharging power of the battery is smaller than the preset power threshold value P2, the starting module is started, and if the actual charging and discharging power of the battery is larger than the preset power threshold value P2 and the duration is larger than the preset time threshold value T2, the battery thermal management system is started.
10. The device of claim 9, wherein the starting module is configured to, when the power battery temperature is in a low temperature range, start the battery thermal management system if the actual battery charging and discharging power is less than the preset power threshold P3, and start the battery thermal management system if the actual battery charging and discharging power is greater than the preset power threshold P3 and the duration is greater than the preset time threshold T3.
11. The apparatus of claim 10, wherein the activation module is further configured to dynamically control the power cell inlet water temperature;
when the temperature of the power battery is in the comfortable temperature range, if the actual charging and discharging power of the battery is smaller than the preset power threshold value P1, not starting the battery thermal management system, if the actual charging and discharging power of the battery is larger than the preset power threshold value P1 and the duration time is larger than the preset time threshold value T1, starting the battery thermal management system, dynamically controlling the water inlet temperature Tin1 to cool the battery according to the temperature of the power battery and the actual charging and discharging power of the battery, and if the actual charging and discharging power of the battery is increased or the temperature of the power battery is increased at the moment, controlling the water inlet temperature Tin1 to gradually decrease;
when the battery temperature is in during the high temperature scope, if the battery actual charge-discharge power is less than preset power threshold P2, then open battery thermal management system, according to power battery temperature calculation and control battery temperature of intaking Tin2 for the battery cooling, if the battery actual charge-discharge power is greater than preset power threshold P2, and duration is greater than preset time threshold T2, then open battery thermal management system, come dynamic control temperature of intaking Tin3 for the battery cooling according to power battery temperature with the battery actual charge-discharge power, if at this moment the battery actual charge-discharge power increases or power battery temperature rises, then control temperature of intaking Tin3 reduces gradually.
12. The device of claim 11, wherein the starting module is further configured to, when the battery temperature is in the low-temperature range, if the actual charging and discharging power of the battery is smaller than the preset power threshold P3, start the battery thermal management system, calculate and control a battery inlet water temperature Tin4 to heat the battery according to the power battery temperature, if the actual charging and discharging power of the battery is greater than the preset power threshold P3 and the duration is greater than the preset time threshold T3, start the battery thermal management system, dynamically control the inlet water temperature Tin5 to heat the battery according to the power battery temperature and the actual charging and discharging power of the battery, and the inlet water temperature Tin5 is less than the inlet water temperature Tin4, at this time, charge and discharge heat at high power by the battery.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114628805A (en) * | 2022-03-28 | 2022-06-14 | 重庆金康赛力斯新能源汽车设计院有限公司 | Battery cooling method, management system and vehicle-mounted terminal |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105489964A (en) * | 2015-12-22 | 2016-04-13 | 重庆科鑫三佳车辆技术有限公司 | Method and device for controlling dynamic temperature rise of power battery |
| CN112092683A (en) * | 2020-08-25 | 2020-12-18 | 金龙联合汽车工业（苏州）有限公司 | Fuel cell energy management control method and system |
| CN112848972A (en) * | 2021-03-16 | 2021-05-28 | 金龙联合汽车工业（苏州）有限公司 | Fuel cell control method and system under low temperature condition |
-
2021
- 2021-11-22 CN CN202111386169.1A patent/CN114030389B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105489964A (en) * | 2015-12-22 | 2016-04-13 | 重庆科鑫三佳车辆技术有限公司 | Method and device for controlling dynamic temperature rise of power battery |
| CN112092683A (en) * | 2020-08-25 | 2020-12-18 | 金龙联合汽车工业（苏州）有限公司 | Fuel cell energy management control method and system |
| CN112848972A (en) * | 2021-03-16 | 2021-05-28 | 金龙联合汽车工业（苏州）有限公司 | Fuel cell control method and system under low temperature condition |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114628805A (en) * | 2022-03-28 | 2022-06-14 | 重庆金康赛力斯新能源汽车设计院有限公司 | Battery cooling method, management system and vehicle-mounted terminal |
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