WO2017190475A1 - 电动汽车动力电池的充电控制方法和控制系统 - Google Patents

电动汽车动力电池的充电控制方法和控制系统 Download PDF

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Publication number
WO2017190475A1
WO2017190475A1 PCT/CN2016/102944 CN2016102944W WO2017190475A1 WO 2017190475 A1 WO2017190475 A1 WO 2017190475A1 CN 2016102944 W CN2016102944 W CN 2016102944W WO 2017190475 A1 WO2017190475 A1 WO 2017190475A1
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WIPO (PCT)
Prior art keywords
temperature
power battery
heating
threshold
current
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Ceased
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PCT/CN2016/102944
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English (en)
French (fr)
Inventor
宋佳
杨重科
韩广璞
周健
秦兴权
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Beijing Electric Vehicle Co Ltd
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Beijing Electric Vehicle Co Ltd
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Filing date
Publication date
Application filed by Beijing Electric Vehicle Co Ltd filed Critical Beijing Electric Vehicle Co Ltd
Publication of WO2017190475A1 publication Critical patent/WO2017190475A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by 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
    • B60L58/27—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
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • H02J7/0091—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/545—Temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the invention relates to the technical field of electric vehicle charging, and particularly relates to a charging control method and a control system for an electric vehicle power battery.
  • the power battery in an electric vehicle is generally a lithium ion battery. Under low temperature conditions, its conductivity is poor, and the diffusion speed of lithium ions is slow, which makes it impossible to charge and discharge or reduce the power of charging and discharging, which may affect the normal charging or driving of the vehicle. .
  • an object of the present invention is to provide a charging control method for an electric vehicle power battery, which can not only effectively charge the power battery at a low temperature, but also improve the power battery when it is at a low temperature after being fully charged.
  • the discharge efficiency improves the problem of short driving distance of the electric vehicle, thereby improving the user experience of the vehicle at low temperatures in winter.
  • a second object of the present invention is to provide a charging control system for an electric vehicle power battery.
  • an embodiment of the first aspect of the present invention provides a charging control method for an electric vehicle power battery, comprising the steps of: S1, detecting a plurality of regions in the power battery in real time after the power battery enters a charging mode Temperature to obtain a current maximum temperature and a current minimum temperature; S2, determining whether the current minimum temperature is less than a charging temperature threshold; S3, controlling the power battery if the current lowest temperature is greater than or equal to the charging temperature threshold Entering a normal temperature charging process to fill the power of the power battery by the normal temperature charging process; S4, after the power of the power battery is full, determining whether the current minimum temperature is less than a low temperature insulation threshold, and the current highest Whether the temperature is lower than the high temperature insulation threshold; S5, if the current minimum temperature is less than the low temperature insulation threshold, and the current maximum temperature is less than the high temperature insulation threshold, controlling the power battery to turn on heating, so that the power battery enters the heating and holding process ; S6, to determine whether the holding time reaches the holding time threshold
  • the ambient temperature of the electric vehicle power battery is detected at a low temperature, so that the power battery is charged through the normal temperature charging process, and the heat preservation control is performed after the battery is fully charged. Therefore, the power battery can be effectively charged at a low temperature, and the discharge efficiency of the power battery at a low temperature after being fully charged can be improved, and the problem that the electric vehicle has a short driving range can be improved, thereby improving the user experience of the vehicle at a low temperature in winter. .
  • the charging control method for the electric vehicle power battery according to the above embodiment of the present invention may further have the following additional technical features:
  • the control method further includes: if the current minimum temperature is less than the charging temperature threshold, further determining whether the lowest temperature is less than a preheating temperature threshold; if the current minimum temperature When the preheating temperature threshold is greater than or equal to, the power battery is controlled to simultaneously turn on heating and charging to enter the heating charging process, until the current minimum temperature is greater than or equal to the charging temperature threshold, stopping heating to enter the heating charging.
  • control method further includes: if the current minimum temperature is greater than or equal to the low temperature insulation threshold, or the current maximum temperature is greater than or equal to the high temperature insulation threshold, then the control The power battery stops charging.
  • the controlling method further comprises: if the holding time reaches the holding time threshold, controlling the power battery to exit the heating and holding process.
  • control method further includes: if the current minimum temperature is greater than the heating and warming process temperature threshold, controlling the power battery to exit the heating and holding process, and resetting the preset time Then, it returns to step S6.
  • the control method further includes: controlling, during the warming up, if the current temperature difference is greater than or equal to the stop heating temperature difference threshold, controlling the power battery to stop heating until the current temperature difference is less than or equal to Allowing to heat the temperature difference threshold, controlling the power battery to turn on the heating again; during the heating and charging process, if the current temperature difference is greater than or equal to the stop heating temperature difference threshold, controlling the power battery to stop heating until the current temperature difference is less than or equal to the allowable heating a temperature difference threshold, controlling the power battery to restart heating; in the heating and heat preservation process, if the current temperature difference is greater than or equal to the stop heating temperature difference threshold, controlling the power battery to stop heating until the current temperature difference is less than Or equal to allowing the heating temperature difference threshold to control the power battery to restart heating; wherein the current temperature difference is a difference between the current highest temperature and the current lowest temperature.
  • control method further includes: during the heating and holding process, after the current temperature difference is greater than or equal to the stop heating temperature difference threshold, controlling the power battery to stop heating, and restarting the heating, determining the cumulative Whether the holding time reaches the holding time threshold; if the accumulated holding time reaches the holding time threshold, controlling the power battery to exit the heating and holding process.
  • an embodiment of the second aspect of the present invention provides a charging control system for an electric vehicle power battery, including: a detecting module, configured to detect a plurality of the power batteries in real time after the power battery enters the charging mode a temperature of the area to obtain a current maximum temperature and a current minimum temperature; a first determining module, configured to determine whether the current minimum temperature is less than a charging temperature threshold; and a first control module, configured to: at the current minimum temperature is greater than or equal to When the charging temperature threshold is described, the power battery is controlled to enter a normal temperature charging process to fill the power of the power battery by the normal temperature charging process; and the second determining module is configured to determine after the power battery is full Whether the current minimum temperature is less than the low temperature insulation threshold, and whether the current maximum temperature is less than the high temperature insulation threshold; the second control module is configured to: when the current minimum temperature is less than the low temperature insulation threshold, and the current maximum temperature is less than the high temperature insulation At a threshold value, controlling the power battery to turn
  • the detection module detects the ambient temperature of the electric vehicle power battery at a low temperature, so that the power battery is charged through the normal temperature charging process, and the heat preservation control is performed after the battery is fully charged. Therefore, the power battery can be effectively charged at a low temperature, and the discharge efficiency of the power battery at a low temperature after being fully charged can be improved, and the problem that the electric vehicle has a short driving range can be improved, thereby improving the user experience of the vehicle at a low temperature in winter. .
  • the charging control system for the electric vehicle power battery according to the above embodiment of the present invention may further have the following additional technical features:
  • the control system further includes: a fifth determining module, configured to determine whether the lowest temperature is less than a preheating temperature threshold when the current minimum temperature is less than the charging temperature threshold; a fourth control module, configured to control the power battery to simultaneously turn on heating and charging to enter a heating charging process when the current minimum temperature is greater than or equal to the preheating temperature threshold, until the current minimum temperature is greater than or equal to the Charging temperature threshold When the value is, the heating is stopped to transfer the power battery to the normal temperature charging process, and finally the battery of the power battery is fully charged; and when the current minimum temperature is less than the preheating temperature threshold, the power battery is controlled Turning on heating to enter the preheating process, until the current minimum temperature is greater than the preheating temperature threshold, controlling the power battery to turn the charging on again to cause the power battery to be transferred to the heating charging process, where the current minimum temperature is greater than When the charging temperature threshold is equal to or equal to, the heating is stopped to cause the power battery to be transferred to the normal temperature charging process
  • the second control module is further configured to: when the current minimum temperature is greater than or equal to the low temperature insulation threshold, or when the current maximum temperature is greater than or equal to the high temperature insulation threshold, The power battery is controlled to stop charging.
  • control system further includes: a fifth control module, configured to control the power battery to exit the heating and holding process when the holding time reaches the holding time threshold.
  • the third control module is further configured to: when the current minimum temperature is greater than the temperature threshold of the heating and holding process, control the power battery to exit the heating and heat preservation process, and wait for the preheating After the time is set, the third determining module is controlled to determine the holding time.
  • the control system further includes: a sixth control module, configured to control the power battery to stop heating when the current temperature difference is greater than or equal to the stop heating temperature difference threshold during the warm-up process Controlling the power battery to turn on heating until the current temperature difference is less than or equal to the allowable heating temperature difference threshold; during the heating and charging process, when the current temperature difference is greater than or equal to the stop heating temperature difference threshold, the power battery is controlled to stop heating until The current temperature difference is less than or equal to the allowable heating temperature difference threshold, and the power battery is controlled to restart heating; and during the heating and heat preservation process, when the current temperature difference is greater than or equal to the stop heating temperature difference threshold, the power battery is controlled to stop heating until the current temperature difference is less than Or equal to allowing the heating temperature difference threshold to control the power battery to restart heating; wherein the current temperature difference is a difference between the current highest temperature and the current lowest temperature.
  • the third determining module is further configured to: during the heating and heat preservation process, after the current temperature difference is greater than or equal to the stop heating temperature difference threshold, control the power battery to stop heating, and restart the heating, determine Whether the accumulated holding time reaches the holding time threshold; the fifth control module is further configured to control the power battery to exit the heating and holding process when the accumulated holding time reaches the holding time threshold.
  • FIG. 1 is a flow chart of a charging control method for an electric vehicle power battery according to an embodiment of the present invention
  • FIG. 2 is a flow chart of a charging control method for an electric vehicle power battery according to an embodiment of the present invention
  • FIG. 3 is a block diagram showing the structure of a charging control system for an electric vehicle power battery according to an embodiment of the present invention
  • FIG. 4 is a block diagram showing the structure of a charging control system for an electric vehicle power battery according to an embodiment of the present invention.
  • FIG. 1 is a flow chart showing a charging control method of an electric vehicle power battery according to an embodiment of the present invention.
  • the charging control method of the electric vehicle power battery includes the following steps:
  • the power battery is controlled to enter a normal temperature charging process to fill the power battery by the normal temperature charging process.
  • the current minimum temperature is less than the charging temperature threshold, it is further determined whether the current minimum temperature is less than the preheating temperature threshold.
  • the power battery is controlled to simultaneously turn on heating and charging to enter the heating charging process, until the current minimum temperature is greater than or equal to the charging temperature threshold, stopping heating to turn the power battery into The normal temperature charging process eventually fills the power battery.
  • the current minimum temperature is less than the preheating temperature threshold, controlling the power battery to turn on the heating to enter the warming up process, until the current minimum temperature is greater than the preheating temperature threshold, controlling the power battery to turn the charging on again to transfer the power battery to the heating and charging process,
  • the heating is stopped to turn the power battery into the normal temperature charging process, and finally the power battery is fully charged.
  • the above heating and charging process is a process of charging the power battery while heating
  • the above-mentioned preheating process is a heating process before the power battery starts charging.
  • the power battery is controlled to turn on the heating, so that the power battery enters the heating and heat preservation process.
  • heating and heat preservation process is a heating process after the power of the power battery is full.
  • the power battery is controlled to stop charging if the current minimum temperature is greater than or equal to the low temperature insulation threshold, or When the maximum temperature is greater than or equal to the high temperature holding threshold.
  • the power battery is controlled to exit the heating and holding process.
  • step S8 if the current minimum temperature is less than or equal to the heating and heat preservation process temperature threshold, the control power battery is continuously heated, so that the power battery continues to heat the heat preservation process, and when the current minimum temperature is greater than the heat insulation end temperature threshold, the power battery is controlled to exit the heating and heat preservation process. After the preset time is left, the process returns to step S6.
  • the control power battery if the current minimum temperature is greater than the heating and heat preservation process temperature threshold, the control power battery is exited from the heating and heat preservation process, and after standing for a preset time, the process returns to step S6.
  • control method may include:
  • step S113 if the current minimum temperature is less than or equal to the temperature threshold of the heating and heat preservation process, controlling the power battery to continue heating, so that the power battery continues to heat the heat preservation process, and when the current minimum temperature is greater than the heat insulation end temperature threshold, the power battery is controlled to exit the heating and heat preservation process. After the preset time is left, the process returns to step S110.
  • step S114 If the current minimum temperature is greater than the heating and heat preservation process temperature threshold, control the power battery to exit the heating and heat preservation process, and after standing for a preset time, return to step S110.
  • control method of the embodiment of the present invention may further include: controlling, during the warm-up process, if the current temperature difference is greater than or equal to the stop heating temperature difference threshold, controlling the power battery to stop heating until the current temperature difference is less than or equal to the allowable heating temperature difference threshold.
  • the current temperature difference is the difference between the current highest temperature and the current lowest temperature.
  • the heating and heat preservation process after the current temperature difference is greater than or equal to the stop heating temperature difference threshold, after controlling the power battery to stop heating, before restarting the heating, it is determined whether the accumulated holding time reaches the holding time threshold; if the accumulated holding time reaches the holding time threshold, Then control the power battery to exit the heating and insulation process.
  • the charging control method for the electric vehicle power battery according to the embodiment of the present invention can not only make the power battery at a low temperature by preheating the electric vehicle power battery before heating, heating during charging, and heat preservation after charging is completed.
  • the battery can be effectively charged, and the discharge efficiency of the power battery after standing at a low temperature after being fully charged can be improved, and the problem that the electric vehicle has a short driving range can be improved, thereby improving the user experience of the vehicle at a low temperature in winter.
  • FIG. 3 is a block diagram showing the structure of a charging control system for an electric vehicle power battery according to an embodiment of the present invention.
  • the charging control system of the electric vehicle power battery includes: a detecting module 101, a first determining module 102, a first control module 103, a second determining module 104, a second control module 105, and a third determining module 106.
  • the detecting module 101 is configured to detect the temperature of multiple regions in the power battery in real time after the power battery enters the charging mode to obtain the current highest temperature and the current minimum temperature.
  • the first determining module 102 is configured to determine whether the current minimum temperature is less than a charging temperature threshold.
  • the first control module 103 is configured to control the power battery to enter the normal temperature charging process when the current minimum temperature is greater than or equal to the charging temperature threshold, so as to fill the power of the power battery by the normal temperature charging process.
  • the second determining module 104 is configured to determine whether the current minimum temperature is less than the low temperature holding threshold after the power of the power battery is full, and whether the current maximum temperature is less than the high temperature holding threshold.
  • the second control module 105 is configured to control the power battery to turn on heating when the current minimum temperature is less than the low temperature insulation threshold, and the current maximum temperature is less than the high temperature insulation threshold, so that the power battery enters the heating and holding process.
  • the second control module 105 is further configured to control the power battery to stop charging when the current minimum temperature is greater than or equal to the low temperature insulation threshold, or when the current maximum temperature is greater than or equal to the high temperature insulation threshold.
  • the third determining module 106 is configured to determine whether the holding time reaches the holding time threshold.
  • the fourth determining module 107 is configured to determine whether the current minimum temperature is greater than a temperature threshold of the heating and holding process when the holding time threshold is not reached.
  • the third control module 108 is configured to control the continuous heating of the power battery when the current minimum temperature is less than or equal to the temperature threshold of the heating and holding process, so that the power battery continues to heat the heat preservation process, and control the power when the current minimum temperature is greater than the heat retention end temperature threshold. After the battery exits the heating and holding process, after the preset time is left, the third determining module 106 controls the holding time.
  • the third control module 108 is further configured to control the power battery to exit the heating and heat preservation process when the current minimum temperature is greater than the temperature threshold of the heating and heat preservation process, and to control the third determination after the preset time is allowed to stand.
  • Module 106 determines the reheat time.
  • control system may further include: a fifth determining module 109, a fourth control module 110, a fifth control module 111, and a sixth control module 112.
  • the fifth determining module 109 is configured to determine whether the lowest temperature is less than the preheating temperature threshold when the current minimum temperature is less than the charging temperature threshold.
  • the fourth control module 110 is configured to control the power battery to simultaneously turn on heating and charging to enter the heating charging process when the current minimum temperature is greater than or equal to the preheating temperature threshold, until the current minimum temperature is greater than or equal to the charging temperature threshold, stopping heating to enable The power battery is transferred to the normal temperature charging process, and finally the power battery is fully charged; and when the current minimum temperature is less than the preheating temperature threshold, the power battery is controlled to turn on the heating to enter the warming process until the current minimum temperature is greater than the preheating temperature threshold. The power battery is controlled to turn on the charging to turn the power battery into the heating and charging process. When the current minimum temperature is greater than or equal to the charging temperature threshold, the heating is stopped to turn the power battery into the normal temperature charging process, and finally the power battery is fully charged.
  • the fifth control module 111 is configured to control the power battery to exit the heating and heat preservation process when the holding time reaches the holding time threshold.
  • the sixth control module 112 is configured to control during the warm-up process when the current temperature difference is greater than or equal to the stop heating temperature difference threshold.
  • the brake battery stops heating until the current temperature difference is less than or equal to the allowable heating temperature difference threshold, and the power battery is controlled to restart heating; during the heating and charging process, when the current temperature difference is greater than or equal to the stop heating temperature difference threshold, the control power battery stops heating until the current The temperature difference is less than or equal to the allowable heating temperature difference threshold, and the power battery is controlled to restart the heating; and during the heating and holding process, when the current temperature difference is greater than or equal to the stop heating temperature difference threshold, the control power battery stops heating until the current temperature difference is less than or equal to the allowable heating temperature difference.
  • the threshold controls the power battery to turn the heating back on.
  • the current temperature difference is a difference between the current highest temperature and the current lowest temperature.
  • the third determining module 106 is further used in the heating and holding process, after the current temperature difference is greater than or equal to the stopping heating temperature difference threshold, after controlling the power battery to stop heating, before restarting the heating, determining the accumulated heat preservation. Whether the time reaches the holding time threshold.
  • the fifth control module 111 is further configured to control the power battery to exit the heating and heat preservation process when the accumulated holding time reaches the holding time threshold.
  • the charging control system for the electric vehicle power battery can not only make the power battery at a low temperature by controlling the electric vehicle power battery to perform preheating before charging, heating during charging, and heat preservation after charging is completed at a low temperature.
  • the battery can be effectively charged, and the discharge efficiency of the power battery after standing at a low temperature after being fully charged can be improved, and the problem that the electric vehicle has a short driving range can be improved, thereby improving the user experience of the vehicle at a low temperature in winter.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the meaning of "a plurality" is at least two, such as two, three, etc., unless specifically defined otherwise.
  • the first feature "on” or “under” the second feature may be a direct contact of the first and second features, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. contact.
  • the first feature "above”, “above” and “above” the second feature may be that the first feature is directly above or above the second feature, or merely that the first feature level is higher than the second feature.
  • the first feature “below”, “below” and “below” the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Secondary Cells (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

一种电动汽车动力电池的充电控制方法和控制系统，其中，方法包括：动力电池进入充电模式后，根据其内多个区域的当前最高温度和当前最低温度，控制动力电池通过常温充电过程充电；电量充满后，在当前最低温度和当前最高温度均较小时，开启加热，以控制动力电池进入加热保温过程；在保温时间未达到保温时间阈值，且当前最低温度不大于加热保温过程温度阈值时，控制动力电池持续保温，退出加热保温过程，并静置预设时间后，返回保温时间判断步骤，以保证动力电池下次放电时的温度。该方法和系统能够使动力电池在低温下进行有效充电，并能够提高其低温静置时的放电效率，改善电动汽车行驶里程短的问题，提高用户体验。

Description

电动汽车动力电池的充电控制方法和控制系统 技术领域
本发明涉及电动汽车充电技术领域，具体涉及一种电动汽车动力电池的充电控制方法和控制系统。
背景技术
电动汽车中的动力电池一般为锂离子电池，在低温条件下，其导电性能差，且锂离子扩散速度慢，使得其无法充放电或充放电功率降低等，进而会影响整车正常充电或行驶。
相关技术中，在低温条件下，锂离子动力电池进行充电时，采用在充电前预热，在充电过程中加热的方法，以保证锂离子动力电池能够正常充电。但其忽略了实际使用时，在低温条件下，动力电池充满电后静置，温度会降低，使得其放电效率低，继而造成电动汽车行驶里程短。
发明内容
本发明旨在至少在一定程度上解决上述技术中的技术问题之一。为此，本发明的一个目的在于提出一种电动汽车动力电池的充电控制方法，该控制方法不仅能够使动力电池在低温下进行有效充电，而且能够提高动力电池在充满电后低温静置时的放电效率，改善电动汽车行驶里程短的问题，从而能够提高冬季低温下用户的用车体验。
本发明的第二个目的在于提出一种电动汽车动力电池的充电控制系统。
为实现上述目的，本发明第一方面的实施例提出了一种电动汽车动力电池的充电控制方法，包括以下步骤：S1,在动力电池进入充电模式后，实时检测所述动力电池内多个区域的温度，以获取当前最高温度和当前最低温度；S2,判断所述当前最低温度是否小于充电温度阈值；S3,如果所述当前最低温度大于或等于所述充电温度阈值，则控制所述动力电池进入常温充电过程，以通过所述常温充电过程使所述动力电池的电量充满；S4,在所述动力电池的电量充满后，判断所述当前最低温度是否小于低温保温阈值，且所述当前最高温度是否小于高温保温阈值；S5,如果所述当前最低温度小于低温保温阈值，且所述当前最高温度小于高温保温阈值，则控制所述动力电池开启加热，以使所述动力电池进入加热保温过程；S6,判断保温时间是否达到保温时间阈值；S7，如果所述保温时间没有达到所述保温时间阈值，则进一步判断所述当前最低温度是否大于加热保温过程温度阈值；S8，如果所述当前最低温度小于或等于所述加热保温过程温度阈值，则控制所述动力电池持续加热，以使所述动力电池持续所述加热保温过程，并在所述当前最低温度大于保温结束温度阈值时，控 制所述动力电池退出所述加热保温过程，静置预设时间后，返回步骤S6。
根据本发明实施例的电动汽车动力电池的充电控制方法，通过在低温下对电动汽车动力电池的环境温度进行检测，以使动力电池通过常温充过程进行充电，并在电量充满后进行保温控制，从而不仅能够使动力电池在低温下进行有效充电，而且能够提高动力电池在充满电后低温静置时的放电效率，改善电动汽车行驶里程短的问题，从而能够提高冬季低温下用户的用车体验。
另外，根据本发明上述实施例的电动汽车动力电池的充电控制方法还可以具有如下附加的技术特征：
根据本发明的一个实施例，所述的控制方法，还包括：如果所述当前最低温度小于所述充电温度阈值，则进一步判断所述最低温度是否小于预热温度阈值；如果所述当前最低温度大于或等于所述预热温度阈值，则控制所述动力电池同时开启加热和充电以进入加热充电过程，直到所述当前最低温度大于或等于所述充电温度阈值时，停止加热以以进入加热充电过程，直到所述当前最低温度大于或等于所述充电温度阈值时，停止加热以使所述动力电池转入所述常温充电过程，最终使所述动力电池的电量充满；以及如果所述当前最低温度小于所述预热温度阈值，则控制所述动力电池开启加热以进入预热过程，直到所述当前最低温度大于所述预热温度阈值时，控制所述动力电池再开启充电以使所述动力电池转入加热充电过程，在所述当前最低温度大于或等于所述充电温度阈值时，停止加热以使所述动力电池转入所述常温充电过程，最终使所述动力电池的电量充满。
根据本发明的一个实施例，所述控制方法，还包括：如果所述当前最低温度大于或等于所述低温保温阈值，或者，所述当前最高温度大于或等于所述高温保温阈值，则控制所述动力电池停止充电。
根据本发明的一个实施例，所述控制方法，还包括：如果所述保温时间达到所述保温时间阈值，则控制所述动力电池退出所述加热保温过程。
根据本发明的一个实施例，所述控制方法，还包括：如果所述当前最低温度大于所述加热保温过程温度阈值，则控制所述动力电池退出所述加热保温过程，并静置预设时间后，返回步骤S6。
根据本发明的一个实施例，所述控制方法，还包括：在所述预热过程中，如果当前温差大于或等于停止加热温差阈值，则控制所述动力电池停止加热，直到当前温差小于或等于允许加热温差阈值，控制所述动力电池重新开启加热；在所述加热充电过程中，如果当前温差大于或等于停止加热温差阈值，则控制所述动力电池停止加热，直到当前温差小于或等于允许加热温差阈值，控制所述动力电池重新开启加热；在加热保温过程中，如果当前温差大于或等于停止加热温差阈值，则控制所述动力电池停止加热，直到当前温差小于 或等于允许加热温差阈值，控制所述动力电池重新开启加热；其中，所述当前温差为当前最高温度和当前最低温度之间的差值。
根据本发明的一个实施例，所述控制方法，还包括：在所述加热保温过程中，在当前温差大于或等于停止加热温差阈值，控制所述动力电池停止加热后，重启加热之前，判断累计保温时间是否达到所述保温时间阈值；如果所述累计保温时间达到所述保温时间阈值，则控制所述动力电池退出所述加热保温过程。
为实现上述目的，本发明第二方面的实施例提出了一种电动汽车动力电池的充电控制系统，包括：检测模块,用于在动力电池进入充电模式后，实时检测所述动力电池内多个区域的温度，以获取当前最高温度和当前最低温度；第一判断模块,用于判断所述当前最低温度是否小于充电温度阈值；第一控制模块,用于在所述当前最低温度大于或等于所述充电温度阈值时，控制所述动力电池进入常温充电过程，以通过所述常温充电过程使所述动力电池的电量充满；第二判断模块,用于在所述动力电池的电量充满后，判断所述当前最低温度是否小于低温保温阈值，且所述当前最高温度是否小于高温保温阈值；第二控制模块,用于在所述当前最低温度小于低温保温阈值，且所述当前最高温度小于高温保温阈值时，控制所述动力电池开启加热，以使所述动力电池进入加热保温过程；第三判断模块,用于判断保温时间是否达到保温时间阈值；第四判断模块，用于在所述保温时间没有达到所述保温时间阈值时，判断所述当前最低温度是否大于加热保温过程温度阈值；第三控制模块，用于在所述当前最低温度小于或等于所述加热保温过程温度阈值时，控制所述动力电池持续加热，以使所述动力电池持续所述加热保温过程，并在所述当前最低温度大于保温结束温度阈值时，控制所述动力电池退出所述加热保温过程，静置预设时间后，控制所述第三判断模块对所述保温时间进行判断。
根据本发明实施例的电动汽车动力电池的充电控制系统，通过检测模块检测在低温下电动汽车动力电池的环境温度，以使动力电池通过常温充过程进行充电，并在电量充满后进行保温控制，从而不仅能够使动力电池在低温下进行有效充电，而且能够提高动力电池在充满电后低温静置时的放电效率，改善电动汽车行驶里程短的问题，从而能够提高冬季低温下用户的用车体验。
另外，根据本发明上述实施例的电动汽车动力电池的充电控制系统还可以具有如下附加的技术特征：
根据本发明的一个实施例，所述控制系统，还包括：第五判断模块，用于在所述当前最低温度小于所述充电温度阈值时，判断所述最低温度是否小于预热温度阈值；第四控制模块，用于在所述当前最低温度大于或等于所述预热温度阈值时，控制所述动力电池同时开启加热和充电以进入加热充电过程，直到所述当前最低温度大于或等于所述充电温度阈 值时，停止加热以使所述动力电池转入所述常温充电过程，最终使所述动力电池的电量充满；以及在所述当前最低温度小于所述预热温度阈值时，控制所述动力电池开启加热以进入预热过程，直到所述当前最低温度大于所述预热温度阈值时，控制所述动力电池再开启充电以使所述动力电池转入加热充电过程，在所述当前最低温度大于或等于所述充电温度阈值时，停止加热以使所述动力电池转入所述常温充电过程，最终使所述动力电池的电量充满。
根据本发明的一个实施例，所述第二控制模块，还用于在所述当前最低温度大于或等于所述低温保温阈值，或者，所述当前最高温度大于或等于所述高温保温阈值时，控制所述动力电池停止充电。
根据本发明的一个实施例，所述控制系统，还包括：第五控制模块，用于在所述保温时间达到所述保温时间阈值时，控制所述动力电池退出所述加热保温过程。
根据本发明的一个实施例，所述第三控制模块，还用于在所述当前最低温度大于所述加热保温过程温度阈值时，控制所述动力电池退出所述加热保温过程，并静置预设时间后，控制所述第三判断模块对所述保温时间进行判断。
根据本发明的一个实施例，所述控制系统，还包括：第六控制模块，用于在所述预热过程中，在当前温差大于或等于停止加热温差阈值时，控制所述动力电池停止加热，直到当前温差小于或等于允许加热温差阈值，控制所述动力电池重新开启加热；在所述加热充电过程中，在当前温差大于或等于停止加热温差阈值时，控制所述动力电池停止加热，直到当前温差小于或等于允许加热温差阈值，控制所述动力电池重新开启加热；以及在加热保温过程中，在当前温差大于或等于停止加热温差阈值时，控制所述动力电池停止加热，直到当前温差小于或等于允许加热温差阈值，控制所述动力电池重新开启加热；其中，所述当前温差为当前最高温度和当前最低温度之间的差值。
根据本发明的一个实施例，所述第三判断模块，还用于所述加热保温过程中，在当前温差大于或等于停止加热温差阈值，控制所述动力电池停止加热后，重启加热之前，判断累计保温时间是否达到所述保温时间阈值；所述第五控制模块，还用于在所述累计保温时间达到所述保温时间阈值时，控制所述动力电池退出所述加热保温过程。
附图说明
本发明的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是根据本发明实施例的电动汽车动力电池的充电控制方法的流程图；
图2是根据本发明一个具体实施例的电动汽车动力电池的充电控制方法的流程图；
图3是根据本发明实施例的电动汽车动力电池的充电控制系统的结构框图；
图4是根据本发明一个实施例的电动汽车动力电池的充电控制系统的结构框图。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。
下面参考附图描述本发明实施例的电动汽车动力电池的充电控制方法和控制系统。
图1是本发明实施例的电动汽车动力电池的充电控制方法的流程图。
如图1所述，该电动汽车动力电池的充电控制方法包括以下步骤：
S1,在动力电池进入充电模式后，实时检测动力电池内多个区域的温度，以获取当前最高温度和当前最低温度。
S2,判断当前最低温度是否小于充电温度阈值。
S3,如果当前最低温度大于或等于充电温度阈值，则控制动力电池进入常温充电过程，以通过常温充电过程使动力电池的电量充满。
在本发明的一个实施例中，如果当前最低温度小于充电温度阈值，则进一步判断当前最低温度是否小于预热温度阈值。
进一步地，如果当前最低温度大于或等于预热温度阈值，则控制动力电池同时开启加热和充电以进入加热充电过程，直到当前最低温度大于或等于充电温度阈值时，停止加热以使动力电池转入常温充电过程，最终使动力电池的电量充满。以及如果当前最低温度小于预热温度阈值，则控制动力电池开启加热以进入预热过程，直到当前最低温度大于预热温度阈值时，控制动力电池再开启充电以使动力电池转入加热充电过程，在当前最低温度大于或等于充电温度阈值时，停止加热以使动力电池转入常温充电过程，最终使动力电池的电量充满。
可以理解的是，上述加热充电过程为动力电池边加热边充电的过程，上述预热过程为动力电池开始充电前的加热过程。
S4,在动力电池的电量充满后，判断当前最低温度是否小于低温保温阈值，且当前最高温度是否小于高温保温阈值。
S5,如果当前最低温度小于低温保温阈值，且当前最高温度小于高温保温阈值，则控制动力电池开启加热，以使动力电池进入加热保温过程。
可以理解的是，上述加热保温过程为动力电池的电量充满后的加热过程。
在本发明的一个实施例中，如果当前最低温度大于或等于低温保温阈值，或者，当前 最高温度大于或等于高温保温阈值，则控制动力电池停止充电。
S6,判断保温时间是否达到保温时间阈值。
S7，如果保温时间没有达到保温时间阈值，则判断当前最低温度是否大于加热保温过程温度阈值。
在本发明的一个实施例中，如果保温时间达到所述保温时间阈值，则控制动力电池退出加热保温过程。
S8，如果当前最低温度小于或等于加热保温过程温度阈值，则控制动力电池持续加热，以使动力电池持续加热保温过程，并在当前最低温度大于保温结束温度阈值时，控制动力电池退出加热保温过程，静置预设时间后，返回步骤S6。
在本发明的一个实施例中，如果当前最低温度大于加热保温过程温度阈值，则控制动力电池退出所述加热保温过程，并静置预设时间后，返回步骤S6。
为方便理解本发明上述实施例的电动汽车动力电池的充电控制方法，可以通过图2进行说明。如图2所示，该控制方法可以包括：
S101，在动力电池进入充电模式后，实时检测动力电池内多个区域的温度，以获取当前最高温度和当前最低温度。
S102,判断当前最低温度是否小于充电温度阈值。
S103,如果当前最低温度大于或等于充电温度阈值，则控制动力电池进入常温充电过程，以通过常温充电过程使动力电池的电量充满。
S104，如果当前最低温度小于充电温度阈值，则进一步判断当前最低温度是否小于预热温度阈值。
S105，如果当前最低温度大于或等于预热温度阈值，则控制动力电池同时开启加热和充电以进入加热充电过程，直到当前最低温度大于或等于充电温度阈值时，停止加热以使动力电池转入常温充电过程，最终使动力电池的电量充满。
S106，如果当前最低温度小于预热温度阈值，则控制动力电池开启加热以进入预热过程，直到当前最低温度大于预热温度阈值时，控制动力电池再开启充电以使动力电池转入加热充电过程，在当前最低温度大于或等于充电温度阈值时，停止加热以使动力电池转入常温充电过程，最终使动力电池的电量充满。
S107,在动力电池的电量充满后，判断当前最低温度是否小于低温保温阈值，且当前最高温度是否小于高温保温阈值。
S108,如果当前最低温度小于低温保温阈值，且当前最高温度小于高温保温阈值，则控制动力电池开启加热，以使动力电池进入加热保温过程。
S109，如果当前最低温度大于或等于低温保温阈值，或者，当前最高温度大于或等于 高温保温阈值，则控制动力电池停止充电。
S110,判断保温时间是否达到保温时间阈值。
S111，如果保温时间没有达到保温时间阈值，则判断当前最低温度是否大于加热保温过程温度阈值。
S112，如果保温时间达到所述保温时间阈值，则控制动力电池退出加热保温过程。
S113，如果当前最低温度小于或等于加热保温过程温度阈值，则控制动力电池持续加热，以使动力电池持续加热保温过程，并在当前最低温度大于保温结束温度阈值时，控制动力电池退出加热保温过程，静置预设时间后，返回步骤S110。
S114，如果当前最低温度大于加热保温过程温度阈值，则控制动力电池退出所述加热保温过程，并静置预设时间后，返回步骤S110。
需要说明的是，本发明实施例的控制方法还可以包括：在预热过程中，如果当前温差大于或等于停止加热温差阈值，则控制动力电池停止加热，直到当前温差小于或等于允许加热温差阈值，控制动力电池重新开启加热；在加热充电过程中，如果当前温差大于或等于停止加热温差阈值，则控制动力电池停止加热，直到当前温差小于或等于允许加热温差阈值，控制动力电池重新开启加热；在加热保温过程中，如果当前温差大于或等于停止加热温差阈值，则控制动力电池停止加热，直到当前温差小于或等于允许加热温差阈值，控制动力电池重新开启加热。
其中，当前温差为当前最高温度和当前最低温度之间的差值。
进一步地，在加热保温过程中，在当前温差大于或等于停止加热温差阈值，控制动力电池停止加热后，重启加热之前，判断累计保温时间是否达到保温时间阈值；如果累计保温时间达到保温时间阈值，则控制动力电池退出加热保温过程。
本发明实施例的电动汽车动力电池的充电控制方法，通过在低温下对电动汽车动力电池进行充电前的预热、充电过程中的加热以及充电完成后的保温，不仅能够使动力电池在低温下进行有效充电，而且能够提高动力电池在充满电后低温静置时的放电效率，改善电动汽车行驶里程短的问题，从而能够提高冬季低温下用户的用车体验。
图3是本发明实施例的电动汽车动力电池的充电控制系统的结构框图。
如图3所示，该电动汽车动力电池的充电控制系统包括：检测模块101、第一判断模块102、第一控制模块103、第二判断模块104、第二控制模块105、第三判断模块106、第四判断模块107、第三控制模块108。
其中，检测模块101用于在动力电池进入充电模式后，实时检测动力电池内多个区域的温度，以获取当前最高温度和当前最低温度。
第一判断模块102用于判断当前最低温度是否小于充电温度阈值。
第一控制模块103用于在当前最低温度大于或等于充电温度阈值时，控制动力电池进入常温充电过程，以通过常温充电过程使动力电池的电量充满。
第二判断模块104用于在动力电池的电量充满后，判断当前最低温度是否小于低温保温阈值，且当前最高温度是否小于高温保温阈值。
第二控制模块105用于在当前最低温度小于低温保温阈值，且当前最高温度小于高温保温阈值时，控制动力电池开启加热，以使动力电池进入加热保温过程。
在本发明的一个实施例中，第二控制模块105还可以用于在当前最低温度大于或等于低温保温阈值，或者，当前最高温度大于或等于高温保温阈值时，控制动力电池停止充电。
第三判断模块106用于判断保温时间是否达到保温时间阈值。
第四判断模块107用于在保温时间没有达到保温时间阈值时，判断当前最低温度是否大于加热保温过程温度阈值。
第三控制模块108用于在当前最低温度小于或等于加热保温过程温度阈值时，控制动力电池持续加热，以使动力电池持续加热保温过程，并在当前最低温度大于保温结束温度阈值时，控制动力电池退出加热保温过程，静置预设时间后，控制第三判断模块106对保温时间进行判断。
在本发明的一个实施例中，第三控制模块108还可以用于在当前最低温度大于加热保温过程温度阈值时，控制动力电池退出加热保温过程，并静置预设时间后，控制第三判断模块106对再次保温时间进行判断。
在本发明的一个实施例中，如图4所示，该控制系统还可以包括：第五判断模块109、第四控制模块110、第五控制模块111和第六控制模块112。
其中，第五判断模块109用于在当前最低温度小于充电温度阈值时，判断最低温度是否小于预热温度阈值。
第四控制模块110用于在当前最低温度大于或等于预热温度阈值时，控制动力电池同时开启加热和充电以进入加热充电过程，直到当前最低温度大于或等于充电温度阈值时，停止加热以使动力电池转入常温充电过程，最终使动力电池的电量充满；以及在当前最低温度小于预热温度阈值时，控制动力电池开启加热以进入预热过程，直到当前最低温度大于预热温度阈值时，控制动力电池再开启充电以使动力电池转入加热充电过程，在当前最低温度大于或等于充电温度阈值时，停止加热以使动力电池转入常温充电过程，最终使动力电池的电量充满。
第五控制模块111用于在保温时间达到所述保温时间阈值时，控制动力电池退出加热保温过程。
第六控制模块112用于在预热过程中，在当前温差大于或等于停止加热温差阈值时，控 制动力电池停止加热，直到当前温差小于或等于允许加热温差阈值，控制动力电池重新开启加热；在加热充电过程中，在当前温差大于或等于停止加热温差阈值时，控制动力电池停止加热，直到当前温差小于或等于允许加热温差阈值，控制动力电池重新开启加热；以及在加热保温过程中，在当前温差大于或等于停止加热温差阈值时，控制动力电池停止加热，直到当前温差小于或等于允许加热温差阈值，控制动力电池重新开启加热。
其中，所述当前温差为当前最高温度和当前最低温度之间的差值。
进一步地，在本发明的一个实施例中，第三判断模块106还用于加热保温过程中，在当前温差大于或等于停止加热温差阈值，控制动力电池停止加热后，重启加热之前，判断累计保温时间是否达到保温时间阈值。
第五控制模块111还用于在累计保温时间达到保温时间阈值时，控制动力电池退出加热保温过程。
需要说明的是，本发明实施例的电动汽车动力电池的充电控制系统的具体实施方式与上述实施例的电动汽车动力电池的充电控制方法的具体实施方式相同，为减少冗余，此处不做赘述。
本发明实施例的电动汽车动力电池的充电控制系统，通过在低温下控制电动汽车动力电池进行充电前的预热、充电过程中的加热以及充电完成后的保温，不仅能够使动力电池在低温下进行有效充电，而且能够提高动力电池在充满电后低温静置时的放电效率，改善电动汽车行驶里程短的问题，从而能够提高冬季低温下用户的用车体验。
在本发明的描述中，需要理解的是，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特 点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (14)

  1. 一种电动汽车动力电池的充电控制方法，其特征在于，包括以下步骤：
    S1,在动力电池进入充电模式后，实时检测所述动力电池内多个区域的温度，以获取当前最高温度和当前最低温度；
    S2,判断所述当前最低温度是否小于充电温度阈值；
    S3,如果所述当前最低温度大于或等于所述充电温度阈值，则控制所述动力电池进入常温充电过程，以通过所述常温充电过程使所述动力电池的电量充满；
    S4,在所述动力电池的电量充满后，判断所述当前最低温度是否小于低温保温阈值，且所述当前最高温度是否小于高温保温阈值；
    S5,如果所述当前最低温度小于低温保温阈值，且所述当前最高温度小于高温保温阈值，则控制所述动力电池开启加热，以使所述动力电池进入加热保温过程；
    S6,判断保温时间是否达到保温时间阈值；
    S7，如果所述保温时间没有达到所述保温时间阈值，则进一步判断所述当前最低温度是否大于加热保温过程温度阈值；
    S8，如果所述当前最低温度小于或等于所述加热保温过程温度阈值，则控制所述动力电池持续加热，以使所述动力电池持续所述加热保温过程，并在所述当前最低温度大于保温结束温度阈值时，控制所述动力电池退出所述加热保温过程，静置预设时间后，返回步骤S6。
  2. 根据权利要求1所述的控制方法，其特征在于，还包括：
    如果所述当前最低温度小于所述充电温度阈值，则进一步判断所述当前最低温度是否小于预热温度阈值；
    如果所述当前最低温度大于或等于所述预热温度阈值，则控制所述动力电池同时开启加热和充电以进入加热充电过程，直到所述当前最低温度大于或等于所述充电温度阈值时，停止加热以使所述动力电池转入所述常温充电过程，最终使所述动力电池的电量充满；以及
    如果所述当前最低温度小于所述预热温度阈值，则控制所述动力电池开启加热以进入预热过程，直到所述当前最低温度大于所述预热温度阈值时，控制所述动力电池再开启充电以使所述动力电池转入加热充电过程，在所述当前最低温度大于或等于所述充电温度阈值时，停止加热以使所述动力电池转入所述常温充电过程，最终使所述动力电池的电量充满。
  3. 根据权利要求1所述的控制方法，其特征在于，还包括：
    如果所述当前最低温度大于或等于所述低温保温阈值，或者，所述当前最高温度大于或等于所述高温保温阈值，则控制所述动力电池停止充电。
  4. 根据权利要求1所述的控制方法，其特征在于，还包括：
    如果所述保温时间达到所述保温时间阈值，则控制所述动力电池退出所述加热保温过程。
  5. 根据权利要求1所述的控制方法，其特征在于，还包括：
    如果所述当前最低温度大于所述加热保温过程温度阈值，则控制所述动力电池退出所述加热保温过程，并静置预设时间后，返回步骤S6。
  6. 根据权利要求2所述的控制方法，其特征在于，还包括：
    在所述预热过程中，如果当前温差大于或等于停止加热温差阈值，则控制所述动力电池停止加热，直到当前温差小于或等于允许加热温差阈值，控制所述动力电池重新开启加热；
    在所述加热充电过程中，如果当前温差大于或等于停止加热温差阈值，则控制所述动力电池停止加热，直到当前温差小于或等于允许加热温差阈值，控制所述动力电池重新开启加热；
    在加热保温过程中，如果当前温差大于或等于停止加热温差阈值，则控制所述动力电池停止加热，直到当前温差小于或等于允许加热温差阈值，控制所述动力电池重新开启加热；
    其中，所述当前温差为当前最高温度和当前最低温度之间的差值。
  7. 根据权利要求6所述的控制方法，其特征在于，还包括：
    在所述加热保温过程中，在当前温差大于或等于停止加热温差阈值，控制所述动力电池停止加热后，重启加热之前，判断累计保温时间是否达到所述保温时间阈值；
    如果所述累计保温时间达到所述保温时间阈值，则控制所述动力电池退出所述加热保温过程。
  8. 一种电动汽车动力电池的充电控制系统，其特征在于，包括：
    检测模块,用于在动力电池进入充电模式后，实时检测所述动力电池内多个区域的温度，以获取当前最高温度和当前最低温度；
    第一判断模块,用于判断所述当前最低温度是否小于充电温度阈值；
    第一控制模块,用于在所述当前最低温度大于或等于所述充电温度阈值时，控制所述动力电池进入常温充电过程，以通过所述常温充电过程使所述动力电池的电量充满；
    第二判断模块,用于在所述动力电池的电量充满后，判断所述当前最低温度是否小于低温保温阈值，且所述当前最高温度是否小于高温保温阈值；
    第二控制模块,用于在所述当前最低温度小于低温保温阈值，且所述当前最高温度小于高温保温阈值时，控制所述动力电池开启加热，以使所述动力电池进入加热保温过程；
    第三判断模块,用于判断保温时间是否达到保温时间阈值；
    第四判断模块，用于在所述保温时间没有达到所述保温时间阈值时，判断所述当前最低温度是否大于加热保温过程温度阈值；
    第三控制模块，用于在所述当前最低温度小于或等于所述加热保温过程温度阈值时，控制所述动力电池持续加热，以使所述动力电池持续所述加热保温过程，并在所述当前最低温度大于保温结束温度阈值时，控制所述动力电池退出所述加热保温过程，静置预设时间后，控制所述第三判断模块对所述保温时间进行判断。
  9. 根据权利要求8所述的控制系统，其特征在于，还包括：
    第五判断模块，用于在所述当前最低温度小于所述充电温度阈值时，判断所述当前最低温度是否小于预热温度阈值；
    第四控制模块，用于在所述当前最低温度大于或等于所述预热温度阈值时，控制所述动力电池同时开启加热和充电以进入加热充电过程，直到所述当前最低温度大于或等于所述充电温度阈值时，停止加热以使所述动力电池转入所述常温充电过程，最终使所述动力电池的电量充满；以及
    在所述当前最低温度小于所述预热温度阈值时，控制所述动力电池开启加热以进入预热过程，直到所述当前最低温度大于所述预热温度阈值时，控制所述动力电池再开启充电以使所述动力电池转入加热充电过程，在所述当前最低温度大于或等于所述充电温度阈值时，停止加热以使所述动力电池转入所述常温充电过程，最终使所述动力电池的电量充满。
  10. 根据权利要求8所述的控制系统，其特征在于，所述第二控制模块，还用于在所述当前最低温度大于或等于所述低温保温阈值，或者，所述当前最高温度大于或等于所述高温保温阈值时，控制所述动力电池停止充电。
  11. 根据权利要求9所述的控制系统，其特征在于，还包括：
    第五控制模块，用于在所述保温时间达到所述保温时间阈值时，控制所述动力电池退出所述加热保温过程。
  12. 根据权利要求8所述的控制系统，其特征在于，所述第三控制模块，还用于在所述当前最低温度大于所述加热保温过程温度阈值时，控制所述动力电池退出所述加热保温过程，并静置预设时间后，控制所述第三判断模块对所述保温时间进行判断。
  13. 根据权利要求9所述的控制系统，其特征在于，还包括：
    第六控制模块，用于在所述预热过程中，在当前温差大于或等于停止加热温差阈值时，控制所述动力电池停止加热，直到当前温差小于或等于允许加热温差阈值，控制所述动力 电池重新开启加热；
    在所述加热充电过程中，在当前温差大于或等于停止加热温差阈值时，控制所述动力电池停止加热，直到当前温差小于或等于允许加热温差阈值，控制所述动力电池重新开启加热；以及
    在加热保温过程中，在当前温差大于或等于停止加热温差阈值时，控制所述动力电池停止加热，直到当前温差小于或等于允许加热温差阈值，控制所述动力电池重新开启加热；
    其中，所述当前温差为当前最高温度和当前最低温度之间的差值。
  14. 根据权利要求13所述的控制系统，其特征在于，
    所述第三判断模块，还用于所述加热保温过程中，在当前温差大于或等于停止加热温差阈值，控制所述动力电池停止加热后，重启加热之前，判断累计保温时间是否达到所述保温时间阈值；
    所述第五控制模块，还用于在所述累计保温时间达到所述保温时间阈值时，控制所述动力电池退出所述加热保温过程。
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CN115236511A (zh) * 2022-07-25 2022-10-25 重庆长安汽车股份有限公司 一种验证动力电池预加热和保温性能的试验方法
CN115622197A (zh) * 2022-11-10 2023-01-17 阳光电源股份有限公司 储能集装箱及其应急供电装置的控制方法、装置及控制器
CN117712566A (zh) * 2023-12-12 2024-03-15 佛山陀普科技有限公司 一种锂电池的加热保温装置及其控制方法

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