Control method, storage medium, program product, and electronic device

Abstract

The invention provides a control method, a storage medium, a program product and electronic equipment. The method comprises the steps that the temperature and the temperature rise rate of a battery assembly at the current moment are acquired; and controlling the battery temperature adjusting device to execute a heating action and / or a heat preservation action according to the temperature and the temperature rise rate. According to different temperature and temperature rise rate conditions, the battery assembly is flexibly controlled to execute different heating and / or heat preservation actions in different environments, the adaptive capacity of heating and / or heat preservation of the battery assembly to the environment is improved, it is ensured that the vehicle energy consumption is reduced by executing the corresponding heating and / or heat preservation actions in the good environment, and the vehicle safety is improved. Different heating and / or heat preservation modes are flexibly applied in a low-temperature severe environment, so that the charging duration of the battery reaches the target charging duration, and the vehicle using experience of a user is improved.

Description

Technical Field

[0001] The present invention relates to the field of battery technology, and in particular to a control method for a battery temperature regulating device, a computer-readable storage medium, a computer program product and an electronic device. Background Art

[0002] Battery heating and insulation technology is very important for the vehicle's user experience. Among the related technologies, the heating technology for the battery on the vehicle usually adopts AC self-heating in combination with liquid heat, direct heating, or membrane heating and other heating technologies. In addition, for insulation technology, during the normal temperature charging stage that relies on insulation to ensure the battery temperature rise, insulation cotton of fixed thickness is usually used inside and outside the battery to achieve insulation.

[0003] However, when using the above-mentioned heating technology, technical parameters such as the heating exit temperature used are generally fixed, and there are problems such as poor adaptability to the charging environment, longer charging time and increased energy consumption in harsh environments such as low-temperature heat exchange. In addition, the above-mentioned insulation technology is used for passive insulation of the battery, and parameters such as the thickness of the battery insulation cotton are generally fixed, which has poor adaptability to the environment. In environments such as excessive wind speed and low temperature, the heat dissipation loss is too large, which increases the charging time and energy consumption and reduces the user's car experience. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0005] To this end, an object of the present invention is to propose a control method for a battery temperature regulation device, which improves the adaptability of the heating and / or insulation of the battery assembly to the environment, ensures that the vehicle energy consumption is reduced by performing corresponding heating and / or insulation actions in a better environment, and flexibly uses different heating and / or insulation methods in low-temperature and harsh environments to make the battery charging time reach the target charging time, thereby improving the user's car experience.

[0006] To this end, a second object of the present invention is to provide a computer-readable storage medium.

[0007] To this end, a third object of the present invention is to provide a computer program product.

[0008] To this end, a fourth objective of the present invention is to provide an electronic device.

[0009] In order to achieve the above-mentioned purpose, an embodiment of the first aspect of the present invention proposes a method, which includes: obtaining the temperature and temperature rise rate of the battery assembly at the current moment; controlling the battery temperature adjustment device to perform heating and / or insulation action according to the temperature and the temperature rise rate.

[0010] According to the control method of the battery temperature regulating device of the embodiment of the present invention, by obtaining the current temperature and temperature rise rate of the battery assembly, the battery temperature regulating device is controlled to perform heating and / or heat preservation actions according to the temperature and temperature rise rate, so as to realize flexible control of the battery assembly to perform different heating and / or heat preservation actions under different environments according to different temperature and temperature rise rate conditions, thereby improving the adaptability of the heating and / or heat preservation of the battery assembly to the environment, ensuring that the vehicle energy consumption is reduced by performing corresponding heating and / or heat preservation actions in a better environment, and flexibly using different heating and / or heat preservation methods in a low-temperature and harsh environment to make the battery charging time reach the target charging time, thereby improving the user's car experience.

[0011] In some embodiments, the temperature and temperature rise rate of a battery assembly at a current moment are obtained, including: obtaining the total charging time of the battery assembly at the charging environment temperature to further determine the target charging time; determining the target charging time based on the total charging time, the target charging time including a low-temperature target charging time and a normal-temperature target charging time; obtaining the temperature and temperature rise rate of the battery assembly at the target charging time at the current moment to make a corresponding control strategy judgment based on the low-temperature and normal-temperature target charging times; obtaining the temperature and temperature rise rate of the battery assembly at the target charging time at the current moment to make a judgment with the ideal temperature and temperature rise rate and execute a corresponding control strategy.

[0012] In some embodiments, the battery temperature regulating device is controlled to perform heating and / or heat preservation actions according to the temperature and the temperature rise rate, including: when the battery assembly is in a low-temperature charging mode and the temperature is greater than a first preset temperature threshold and the temperature rise rate is greater than the first preset temperature rise rate threshold, determining that the battery assembly is in a low-temperature charging preferential control mode, so that the battery enters a heating mode that best matches and is optimal for the current battery after the temperature is greater than the first preset temperature threshold and the temperature rise rate is greater than the first preset temperature rise rate threshold, i.e., a low-temperature charging preferential control mode; in the low-temperature charging preferential control mode, the heating device in the battery temperature regulating device is controlled to heat the battery assembly with an initial heating strategy to achieve a heating strategy that matches the optimal heating strategy for the current battery, and the first preset temperature threshold and the first preset temperature rise rate threshold are variable values ​​set according to experiments and user needs, thereby flexibly controlling the vehicle to select the optimal heating mode and heating strategy when the current charging environment temperature is greater than the first preset temperature threshold and the temperature rise rate is greater than the first preset temperature rise rate threshold.

[0013] In some embodiments, the battery temperature regulating device is controlled to perform a heating action and / or a heat preservation action according to the temperature and the temperature rise rate, including: when the battery assembly is in a low-temperature charging mode and the temperature is greater than a first preset temperature threshold and the temperature rise rate is less than or equal to the first preset temperature rise rate threshold, determining that the battery assembly is in a low-temperature charging prospective control mode, so that the battery enters a heating mode that best matches and is optimal for the current battery after the temperature is greater than the first preset temperature threshold and the temperature rise rate is less than or equal to the first preset temperature rise rate threshold, that is, a low-temperature charging prospective control mode; in the low-temperature charging prospective control mode, the heating device in the battery temperature regulating device is controlled to heat the battery assembly with a first frequency AC and a first rate AC self-heating and / or an initial heating strategy to achieve a heating strategy that matches the current battery, and the first preset temperature threshold and the first preset temperature rise rate threshold are variable values ​​set according to experiments and user needs, so as to flexibly control the vehicle to select the optimal heating mode and heating strategy when the current charging environment temperature is greater than the first preset temperature threshold and the temperature rise rate is less than or equal to the first preset temperature rise rate threshold.

[0014] In some embodiments, the battery temperature regulating device is controlled to perform a heating action and / or a heat preservation action according to the temperature and the temperature rise rate, including: when the battery assembly is in a low-temperature charging mode and the temperature is less than or equal to a first preset temperature threshold and the temperature rise rate is greater than the first preset temperature rise rate threshold, determining that the battery assembly is in a low-temperature charging acceleration control mode, so that the battery enters a heating mode that best matches and is optimal for the current battery after the temperature is less than or equal to the first preset temperature threshold and the temperature rise rate is greater than the first preset temperature rise rate threshold, that is, a low-temperature charging acceleration control mode; in the low-temperature charging acceleration control mode, the heating device in the battery temperature regulating device is controlled to heat the battery assembly with a second frequency AC and a second rate AC self-heating and / or an initial heating strategy, the first frequency is greater than the second frequency, the first rate is less than the second rate, so as to achieve a heating strategy that matches the optimal current battery, and the first preset temperature threshold and the first preset temperature rise rate threshold are variable values ​​set according to experiments and user needs, so as to flexibly control the vehicle to select the optimal heating mode and heating strategy when the current charging environment temperature is less than or equal to the first preset temperature threshold and the temperature rise rate is greater than the first preset temperature rise rate threshold.

[0015] In some embodiments, the battery temperature regulating device is controlled to perform a heating action and / or a heat preservation action according to the temperature and the temperature rise rate, including: when the battery assembly is in a low-temperature charging mode and the temperature is less than or equal to a first preset temperature threshold and the temperature rise rate is less than or equal to the first preset temperature rise rate threshold, determining that the battery assembly is in a low-temperature charging catch-up control mode, so that the battery enters a heating mode that best matches and is optimal for the current battery after the temperature is less than or equal to the first preset temperature threshold and the temperature rise rate is less than or equal to the first preset temperature rise rate threshold; in the low-temperature charging catch-up control mode In the rush control mode, the heating device in the battery temperature regulating device is controlled to heat the battery assembly with a third frequency AC and a third rate AC self-heating and / or an initial heating strategy, the third frequency is less than the second frequency, and the third rate is greater than the second rate, so as to achieve the optimal heating strategy matching the current battery, and the first preset temperature threshold and the first preset temperature rise rate threshold are variable values ​​set according to experiments and user needs, so as to flexibly control the vehicle to select the optimal heating mode and heating strategy when the current charging environment temperature is less than or equal to the first preset temperature threshold and the temperature rise rate is less than or equal to the first preset temperature rise rate threshold.

[0016] In some embodiments, after controlling the battery temperature regulating device to perform heating and / or heat preservation actions according to the temperature and the temperature rise rate, it also includes: obtaining the time that the battery assembly is in the low-temperature charging catch-up control mode at the set time, as a basis for evaluating whether the battery has a risk of failing to reach the target charging time; when the ratio of the time to the total low-temperature charging time is greater than a preset ratio, controlling the heating device in the battery temperature regulating device to heat the battery assembly with self-heating and / or an initial heating strategy at a constant temperature rise rate, thereby extending the heating time, increasing the charging current, and significantly shortening the charging time.

[0017] In some embodiments, the battery temperature regulating device is controlled to perform heating and / or heat preservation actions according to the temperature and the temperature rise rate, including: when the battery assembly is in the normal temperature charging mode and the temperature is greater than the second preset temperature threshold and the temperature rise rate is greater than the second preset temperature rise rate threshold, determining that the battery assembly is in the normal temperature charging preferential control mode, so that the battery enters the heat preservation charging mode that best matches and is the best for the current battery after the temperature is greater than the second preset temperature threshold and the temperature rise rate is greater than the second preset temperature rise rate threshold, that is, the normal temperature charging preferential control mode; in the normal temperature charging preferential control mode, the heat preservation device in the battery temperature regulating device is controlled to maintain initial action, so as to achieve the optimal heat preservation charging strategy matching the current battery, and the second preset temperature threshold and the second preset temperature rise rate threshold are variable values ​​set according to experiments and user needs, so as to flexibly control the vehicle to select the optimal heat preservation charging mode and heat preservation charging strategy when the current charging environment temperature is greater than the second preset temperature threshold and the temperature rise rate is greater than the second preset temperature rise rate threshold.

[0018] In some embodiments, the battery temperature regulating device is controlled to perform a heating action and / or a heat preservation action according to the temperature and the temperature rise rate, including: when the battery assembly is in a normal temperature charging mode and the temperature is greater than a second preset temperature threshold and the temperature rise rate is less than or equal to the second preset temperature rise rate threshold, determining that the battery assembly is in a normal temperature charging look-ahead control mode, so that the battery enters a heat preservation charging mode that best matches and is optimal for the current battery after the temperature is greater than the second preset temperature threshold and the temperature rise rate is less than or equal to the second preset temperature rise rate threshold, that is, a normal temperature charging look-ahead control mode; in the normal temperature charging look-ahead control mode, the heat preservation material of the heat preservation device in the battery temperature regulating device is controlled to be turned on, so as to match the optimal heat preservation charging strategy for the current battery, and the second preset temperature threshold and the second preset temperature rise rate threshold are variable values ​​set according to experiments and user needs, so as to flexibly control the vehicle to select the optimal heat preservation charging mode and heat preservation charging strategy when the current charging environment temperature is greater than the second preset temperature threshold and the temperature rise rate is less than or equal to the second preset temperature rise rate threshold.

[0019] In some embodiments, the battery temperature regulating device is controlled to perform a heating action and / or a heat preservation action according to the temperature and the temperature rise rate, including: when the battery assembly is in a normal temperature charging mode and the temperature is less than or equal to a second preset temperature threshold and the temperature rise rate is greater than the second preset temperature rise rate threshold, determining that the battery assembly is in a normal temperature charging acceleration control mode, so that the battery enters a heat preservation charging mode that best matches and is optimal for the current battery after the temperature is less than or equal to the second preset temperature threshold and the temperature rise rate is greater than the second preset temperature rise rate threshold, i.e., a normal temperature charging acceleration control mode; in the normal temperature charging acceleration control mode, the heat preservation device in the battery temperature regulating device is controlled to cover the bottom of the battery assembly, so as to achieve the optimal heat preservation charging strategy matching the current battery, and the second preset temperature threshold and the second preset temperature rise rate threshold are variable values ​​set according to experiments and user needs, so as to flexibly control the vehicle to select the optimal heat preservation charging mode and heat preservation charging strategy when the current charging environment temperature is less than or equal to the second preset temperature threshold and the temperature rise rate is greater than the second preset temperature rise rate threshold.

[0020] In some embodiments, the battery temperature regulating device is controlled to perform a heating action and / or a heat preservation action according to the temperature and the temperature rise rate, including: when the battery assembly is in a normal temperature charging mode and the temperature is less than or equal to a second preset temperature threshold and the temperature rise rate is less than or equal to the second preset temperature rise rate threshold, determining that the battery assembly is in a normal temperature charging catch-up control mode, so that the battery enters the heat preservation charging mode that best matches and is the best for the current battery after the temperature is less than or equal to the second preset temperature threshold and the temperature rise rate is less than or equal to the second preset temperature rise rate threshold, that is, the normal temperature charging catch-up control mode; in the normal temperature charging catch-up control mode, the heat preservation material of the heat preservation device of the battery is controlled to be turned on and the heat preservation device covers the bottom of the battery assembly, so as to match the optimal heat preservation charging strategy for the current battery, and the second preset temperature threshold and the second preset temperature rise rate threshold are variable values ​​set according to experiments and user needs, so as to flexibly control the vehicle to select the optimal heat preservation charging mode and heat preservation charging strategy when the current charging environment temperature is less than or equal to the second preset temperature threshold and the temperature rise rate is less than or equal to the second preset temperature rise rate threshold.

[0021] In some embodiments, the battery temperature regulation device also includes a wind shield device. When it is determined that the battery assembly is in normal temperature charging mode, it also includes: obtaining the wind speed at the bottom of the battery assembly as a basis for determining whether it is necessary to turn on the wind shield device; when the wind speed is higher than the preset wind speed, controlling the wind shield device to turn on to ensure that the adverse effects of cold air from the external environment on the heat dissipation of the battery are isolated, thereby significantly reducing convective heat transfer.

[0022] In some embodiments, before controlling the battery temperature adjustment device to perform a heating action and / or a heat preservation action according to the temperature and the temperature rise rate, it also includes: when the temperature is less than or equal to the charging temperature threshold, determining that the battery assembly is in a low-temperature charging mode to implement a corresponding low-temperature charging strategy; when the temperature is greater than the charging temperature threshold, determining that the battery assembly is in a normal temperature charging mode to implement a corresponding normal temperature charging strategy.

[0023] In order to achieve the above-mentioned purpose, an embodiment of the second aspect of the present invention proposes a computer-readable storage medium, on which a control program of a battery temperature regulation device is stored. When the control program of the battery temperature regulation device is executed by a processor, a device equipped with the control program of the battery temperature regulation device implements the vehicle control method described in the above-mentioned embodiment.

[0024] In order to achieve the above-mentioned object, an embodiment of the third aspect of the present invention provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the control method of the battery temperature regulating device as described in the above-mentioned embodiment is implemented.

[0025] According to the computer program product of the embodiment of the present invention, by obtaining the current temperature and temperature rise rate of the battery assembly, the battery temperature adjustment device is controlled to perform heating and / or insulation actions according to the temperature and temperature rise rate, so as to flexibly control the battery assembly to perform different heating and / or insulation actions in different environments according to different temperature and temperature rise rate conditions, thereby improving the adaptability of the heating and / or insulation of the battery assembly to the environment, ensuring that the vehicle energy consumption is reduced by performing corresponding heating and / or insulation actions in a better environment, and flexibly using different heating and / or insulation methods in a low-temperature and harsh environment to make the battery charging time reach the target charging time, thereby improving the user's vehicle experience.

[0026] In order to achieve the above-mentioned purpose, an embodiment of the fourth aspect of the present invention proposes an electronic device, which includes: an acquisition module, used to obtain the temperature and temperature rise rate of the battery component at the current moment; and a control module, used to control the battery temperature adjustment device to perform heating action and / or insulation action according to the temperature and the temperature rise rate.

[0027] According to the electronic device of the embodiment of the present invention, by obtaining the current temperature and temperature rise rate of the battery assembly, the battery temperature adjustment device is controlled to perform heating and / or insulation actions according to the temperature and temperature rise rate, so as to flexibly control the battery assembly to perform different heating and / or insulation actions in different environments according to different temperature and temperature rise rate conditions, thereby improving the adaptability of the heating and / or insulation of the battery assembly to the environment, ensuring that the vehicle energy consumption is reduced by performing corresponding heating and / or insulation actions in a better environment, and flexibly using different heating and / or insulation methods in a low-temperature and harsh environment to make the battery charging time reach the target charging time, thereby improving the user's car experience.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 is a flow chart of a control method of a battery temperature regulating device according to an embodiment of the present invention; Figure 2 is a schematic structural diagram of a battery management system according to an embodiment of the present invention; Figure 3 is a schematic structural diagram of a battery management system according to another embodiment of the present invention; Figure 4 is a flow chart of a control method of a battery temperature regulating device according to another embodiment of the present invention; Figure 5 is a block diagram of an electronic device according to an embodiment of the present invention.

[0030] Reference numerals: The first side surface 11 of the battery; the second side surface 12 of the battery; the bottom surface 13 of the battery; the third side surface 14 of the battery; the top surface 15 of the battery; the fourth side surface 16 of the battery; the heat preservation covering device 17; the wind shielding device 18; Acquisition module 101; Control module 102; Electronic device 100. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present invention are described in detail below.

[0032] The fast pace of modern society makes it increasingly difficult for electric car users to accept long charging times. Lithium-ion batteries have disadvantages such as reduced activity of positive and negative electrode materials and reduced electrolyte conductivity at low temperatures, which limits the battery charging current at low temperatures, resulting in a significant increase in low-temperature charging time compared to normal-temperature charging time. In addition, in the user's actual charging environment, factors such as low ambient temperature, high wind speed, and large thermal losses between the battery and the vehicle body will also increase the heat loss of the battery, reduce the battery temperature, and increase the charging time. Therefore, battery heating and insulation technology is very important for the vehicle's user experience.

[0033] In the related technology, for example, the battery is heated by AC self-heating combined with liquid heating, direct heating, membrane heating and other heating technologies, and the battery is insulated during the normal temperature charging stage by using insulation cotton of fixed thickness inside and outside the battery.

[0034] However, with the above heating technology, the performance parameters of the heating method are fixed in actual use by users, and due to energy consumption limitations, these performance parameters cannot be designed to be optimal parameters in the design stage. For example, the excitation current of self-heating cannot be designed to be the maximum, otherwise it will increase energy consumption, which makes the battery lack the actual adaptability to low temperature environments under harsh heat exchange conditions, thereby greatly increasing the charging time. The above insulation technology lacks the ability to adapt to harsh heat exchange conditions such as low external ambient temperature, high wind speed, low vehicle body temperature, and strong radiation heat exchange, resulting in a significant increase in charging time.

[0035] Therefore, the control method of the battery temperature regulating device of the embodiment of the present invention is adopted, by obtaining the current temperature and temperature rise rate of the battery assembly, and controlling the battery temperature regulating device to perform heating and / or insulation actions according to the temperature and temperature rise rate, so as to realize flexible control of the battery assembly to perform different heating and / or insulation actions under different environments according to different temperature and temperature rise rate conditions, thereby improving the adaptability of the heating and / or insulation of the battery assembly to the environment, ensuring that the vehicle energy consumption is reduced by performing corresponding heating and / or insulation actions in a better environment, and flexibly using different heating and / or insulation methods in a low-temperature and harsh environment to make the battery charging time reach the target charging time, thereby improving the user's car experience.

[0036] Combine the following Figure 1-Figure 4 A control method of a battery temperature regulating device according to an embodiment of the present invention is described.

[0037] like Figure 2 As shown, the control method of the battery temperature regulating device according to the embodiment of the present invention at least includes steps S1 and S2.

[0038] Step S1, obtaining the current temperature and temperature rise rate of the battery assembly.

[0039] In an embodiment, a battery assembly includes a battery, and the temperature of the battery assembly at a current moment is the current temperature of the charging environment for charging the battery; the temperature rise rate at a current moment is the rate at which the battery temperature changes during the heating process, usually expressed in degrees of temperature rise per minute; the temperature and temperature rise rate of the battery assembly at a current moment are obtained to provide a basis for flexibly controlling the battery to perform different heating and insulation actions in different environments.

[0040] Step S2, controlling the battery temperature adjustment device to perform heating action and / or heat preservation action according to the temperature and the temperature rise rate.

[0041] In an embodiment, Figure 2 FIG. 1 is a schematic diagram of a battery management system according to an embodiment of the present invention. Figure 3 FIG. 1 is a schematic diagram of a battery management system according to another embodiment of the present invention. The battery temperature regulating device includes: Figure 2 The battery first side 11, the battery second side 12, the battery bottom 13, the battery third side 14, the battery top 15, the battery fourth side 16, the thermal insulation covering device 17 and the wind shielding device 18.

[0042] Among them, the heat preservation covering device 17: is installed at both ends of the bottom surface 3 in the form of a reel. When activated, the motor controls the reels at both ends to unfold toward the middle direction of the bottom surface to cover the bottom surface of the battery; the windshield device 18: the windshield device 18 is installed closely to the outside of the first side surface 11 of the battery, the second side surface 12 of the battery, the third side surface 14 of the battery and the fourth side surface 16 of the battery. When the windshield device is not in use, the lower end of the windshield is flush with the lower end of the side surface of the battery. When the windshield device is in use, the motor drives the windshield device to move downward until the lower end of each windshield device is in contact with the ground, so as to achieve the effect of blocking the entry of ambient wind and greatly reducing the amount of heat dissipated by forced convection. In addition, the outer surfaces of the first side surface 11 of the battery, the second side surface 12 of the battery, the third side surface 14 of the battery, the fourth side surface 16 of the battery and the top surface 15 of the battery are all installed with porous heat preservation materials. When the external heat exchange conditions are good, the porous heat preservation materials are in a compressed state. When the external heat exchange conditions are poor, the porous heat preservation materials are automatically released. The released porous heat preservation materials form a Figure 3 As shown in the multi-porous structure, the large inflow of air significantly increases the thermal resistance of the porous thermal insulation material, significantly improves the thermal insulation effect of the porous thermal insulation material on the battery surface, and delays the cooling of the battery in a low-temperature environment.

[0043] The battery temperature regulating device is controlled to perform heating and / or heat preservation actions according to the temperature and the temperature rise rate. For example, according to whether the self-heating and heating methods such as liquid heat, membrane heating, and direct heating are started during the battery charging period, the battery charging stage can be divided into a low-temperature charging mode and a normal-temperature charging mode. Specifically, when the temperature of the battery is less than or equal to the temperature critical value of the low-temperature charging mode and the normal-temperature charging mode, the low-temperature charging mode is entered, otherwise the normal-temperature charging mode is entered; when heating is started during battery charging, the battery is in the low-temperature charging mode, and the battery temperature regulating device is controlled to perform heating actions. The charging time of the battery mainly depends on the temperature rise rate of the battery heating. At this time, the low-temperature charging time reaches the corresponding target charging time by actively adjusting the frequency of the AC self-heating, the excitation current, the exit temperature of the liquid heat or membrane heating or the direct heating, and other parameters; as the charging progresses, the battery temperature rises to a certain extent and reaches the exit temperature of the battery heating, and the battery exits the heating, and the control The battery temperature regulating device is controlled to perform the insulation action. At this time, the charging time of the battery mainly depends on the insulation effect of the battery. If the heat exchange conditions of the external low-temperature environment are bad and the battery insulation effect is poor, the insulation effect of the battery is improved by means of insulation covering devices, porous insulation materials, windshield devices, etc., to ensure that the external influence is minimized, so that the battery can steadily increase the temperature through its own heat, thereby increasing the charging current temperature and shortening the charging time. In controlling the battery temperature regulating device to perform heating and / or insulation actions, the parameters and judgment conditions used are obtained based on the ambient temperature, ideal charging time, user needs and experimental tests, etc., making the heating and insulation strategies for the battery more flexible and accurate, thereby improving the adaptability of the battery heating and insulation to the environment, ensuring that the vehicle's energy consumption is reduced when the battery heat exchange environment is good, and when the environment is poor, the battery charging reaches the target charging time, thereby improving the user's car experience.

[0044] According to the control method of the battery temperature regulating device of the embodiment of the present invention, by obtaining the current temperature and temperature rise rate of the battery assembly, the battery temperature regulating device is controlled to perform heating and / or heat preservation actions according to the temperature and temperature rise rate, so as to realize flexible control of the battery assembly to perform different heating and / or heat preservation actions under different environments according to different temperature and temperature rise rate conditions, thereby improving the adaptability of the heating and / or heat preservation of the battery assembly to the environment, ensuring that the vehicle energy consumption is reduced by performing corresponding heating and / or heat preservation actions under better environments, and flexibly using different heating and / or heat preservation methods under low temperature and harsh environments to make the battery charging time reach the target charging time, thereby improving the user's car experience.

[0045] In some embodiments, the temperature and temperature rise rate of the battery assembly at the current moment are obtained, including: obtaining the total charging time of the battery assembly at the charging environment temperature; determining the target charging time based on the total charging time, the target charging time including the low-temperature target charging time and the normal-temperature target charging time; obtaining the temperature and temperature rise rate of the battery assembly at the current moment under the target charging time.

[0046] In an embodiment, the temperature of the battery assembly at the current moment is the current temperature of the charging environment for charging the battery; the temperature rise rate at the current moment is the rate of temperature change of the battery during the heating process, usually expressed in degrees of temperature rise per minute; the total charging time is the ideal charging time of the battery in the charging environment. Affected by temperature, the ideal charging time may be different at different temperatures. For example, the battery needs to implement low-temperature charging time tests at different temperatures during the design phase, and then obtain the actual charging time at each low temperature. These measured charging times are regarded as ideal charging times. At the same time, taking into account the actual user experience, a corresponding ideal charging time is set for each charging environment temperature range. The ideal charging time can be set as follows: when the charging environment temperature is 0~-10℃, the ideal battery full charging time is 90min; when When the charging environment temperature is -10~-20℃, the ideal battery full charging time is 100min; when the charging environment temperature is -20~-30℃, the ideal battery full charging time is 110min; when the charging environment temperature is below -30℃, the ideal battery full charging time is 120min. This is just an example. The actual ideal charging time setting can be adjusted according to product capabilities and user needs. The target charging time is to shorten the charging time as much as possible to reach the ideal charging time and meet the user's charging time requirements as much as possible. The target charging time is less than or equal to the ideal charging time; the low-temperature target charging time is the time it takes to heat the battery to overcome the impact of the low temperature environment on charging; the normal-temperature target charging time is the time it takes to keep the battery warm after the battery has reached normal temperature conditions through heating.

[0047] When obtaining the current temperature and temperature rise rate of the battery component, the total charging time of the battery is obtained according to the current charging environment temperature of the battery, so as to further determine the target charging time; the total charging time is decomposed into low-temperature target charging time and normal-temperature target charging time according to the ambient temperature conditions, so as to make corresponding control strategy judgments according to the low-temperature and normal-temperature target charging times; the current temperature and temperature rise rate of the battery component under the target charging time are obtained, so as to make judgments with the ideal temperature and temperature rise rate and execute corresponding control strategies.

[0048] In some embodiments, a battery temperature regulating device is controlled to perform heating and / or heat preservation actions according to the temperature and the temperature rise rate, including: when the battery assembly is in a low-temperature charging mode and the temperature is greater than a first preset temperature threshold and the temperature rise rate is greater than a first preset temperature rise rate threshold, determining that the battery assembly is in a low-temperature charging priority control mode; in the low-temperature charging priority control mode, controlling the heating device in the battery temperature regulating device to heat the battery assembly with an initial heating strategy.

[0049] In the embodiment, the low temperature charging mode is a mode in which the battery needs to be heated to overcome the effect of the low temperature environment on charging. In the low temperature environment, the temperature of the battery when starting charging is usually consistent with the ambient temperature. At this time, the battery temperature is lower than the exit temperature of the battery system heating. The exit temperature of the heating is set to x+n Δ x ℃, it is understandable that n The larger the value, the higher the exit temperature. x、n and Δ x The specific value of is obtained according to user needs and experiments, for example, x =5~15℃, Δ x= 1℃, n The values ​​of are 1, 2 and 3, where n The specific value of depends on the specific mode of the low-temperature charging stage. In the low-temperature charging forward control mode, n =1; In low temperature charging acceleration control mode, n =2; In low temperature charging catch-up control mode, n =3; When the battery temperature rises to x+n Δ x After ℃, the battery will exit all heating modes and enter the normal temperature charging mode from the low temperature charging mode.

[0050] The first preset temperature threshold and the first preset temperature rise rate threshold are the ideal temperature and ideal temperature rise rate that the battery needs to reach at each low-temperature charging moment. They are also the critical values ​​for judging whether the battery enters a certain charging control mode. They can be set according to demand, experimental tests, target low-temperature charging time and target total charging time. The low-temperature charging preferential control mode is a function that provides heating for the battery in a low-temperature environment to ensure that the battery can be charged normally and maintain the best working state under low-temperature conditions. The initial heating strategy is the original charging strategy of the battery, such as liquid heating, membrane heating and direct heating.

[0051] When the battery temperature regulating device is controlled to perform heating and / or heat preservation actions according to the temperature and the temperature rise rate, when the battery assembly is in the low-temperature charging mode, and the current charging environment temperature of the battery is greater than the first preset temperature threshold and the temperature rise rate is greater than the first preset temperature rise rate threshold, the battery assembly enters the low-temperature charging preferential control mode, which indicates that the current heat dissipation loss of the battery is small, the temperature and the temperature rise rate are high, and it is expected that the target charging time can be achieved, so that the battery enters the heating mode that best matches and is the best for the current battery after the temperature is greater than the first preset temperature threshold and the temperature rise rate is greater than the first preset temperature rise rate threshold, that is, the low-temperature charging preferential control mode; in the low-temperature charging preferential control mode, the heating device in the battery temperature regulating device is controlled to heat the battery assembly with initial heating strategies such as liquid heating, membrane heating and direct heating. At this time, the exit temperature of the low-temperature charging mode is assumed to be x ℃, since the target charging time is expected to be achieved in this mode, the current self-heating strategy is not adjusted to achieve the optimal heating strategy matching the current battery, and the first preset temperature threshold and the first preset temperature rise rate threshold are variable values ​​set according to experiments and user needs, so as to flexibly control the vehicle to select the optimal heating mode and heating strategy when the current charging environment temperature is greater than the first preset temperature threshold and the temperature rise rate is greater than the first preset temperature rise rate threshold.

[0052] In some embodiments, a battery temperature regulating device is controlled to perform heating and / or heat preservation actions according to the temperature and the temperature rise rate, including: when the battery assembly is in a low-temperature charging mode and the temperature is greater than a first preset temperature threshold and the temperature rise rate is less than or equal to the first preset temperature rise rate threshold, determining that the battery assembly is in a low-temperature charging look-ahead control mode; in the low-temperature charging look-ahead control mode, controlling the heating device in the battery temperature regulating device to heat the battery assembly with a first frequency AC and a first rate AC self-heating and / or an initial heating strategy.

[0053] In the embodiment, the low temperature charging look-ahead control mode is a function that requires providing less heating to the battery in a low temperature environment than other control modes, so as to ensure that the battery can be charged normally and maintain the best working state under low temperature conditions; for the selection of the frequency and rate of AC self-heating, for example, the selection of the frequency and rate in each low temperature charging mode follows the following steps: First, the temperature rise rate of the battery at various frequencies and rates was determined through laboratory tests, and the temperature rise rate of the battery from the average ambient low temperature was obtained. T 0 temperature rise to the average exit temperature of AC self-heating T 1 average temperature rise rate map. The AC power ratios tested are C 1. C 2. C 3. C 4. C 5. ...C x ,in C 1< C 2< C 3< C 4< C 5<...< C x ; The AC frequencies tested are F 1. F 2. F 3. F 4. F 5. ... F y ,in F 1> F 2> F 3> F 4> F 5>...> F y The temperature rise rates at various frequencies and rates are R 11 , R 12 ,..., R xy , we get the following frequency / multiplier table. From the characteristics of AC self-heating, we know that the lower the frequency and the greater the multiplier, the higher the average temperature rise rate. Therefore, the temperature rise rates in the following table have the following relationship: R i1 < R i2 < R i3 < R i4 < R i5 <...< R iy ,in, i =1、2、...、 x ; R 1j < R 2j < R 3j < R 4j < R 5j <...< R xj ,in, j =1、2、...、 yThat is, the temperature rise rate in the same row increases gradually from left to right, and the temperature rise rate in the same column increases gradually from top to bottom, so in the table below, the temperature rise rate in the lower right corner is the highest, the temperature rise rate in the upper left corner is the lowest, and the temperature rise rate in the middle of the table is between the two.

[0054] Frequency / multiplier <![CDATA[F1]]> <![CDATA[F2]]> <![CDATA[F3]]> <![CDATA[F4]]> <![CDATA[F5]]> … <![CDATA[F y ]]> <![CDATA[C1]]> <![CDATA[R 11 ]]> <![CDATA[R 12 ]]> <![CDATA[R 13 ]]> <![CDATA[R 14 ]]> <![CDATA[R 15 ]]> … <![CDATA[R 1y ]]> <![CDATA[C2]]> <![CDATA[R 21 ]]> <![CDATA[R 22 ]]> <![CDATA[R 23 ]]> <![CDATA[R 24 ]]> <![CDATA[R 25 ]]> … <![CDATA[R 2y ]]> <![CDATA[C3]]> <![CDATA[R 31 ]]> <![CDATA[R 32 ]]> <![CDATA[R 33 ]]> <![CDATA[R 34 ]]> <![CDATA[R 35 ]]> … <![CDATA[R 3y ]]> <![CDATA[C4]]> <![CDATA[R 41 ]]> <![CDATA[R 42 ]]> <![CDATA[R 43 ]]> <![CDATA[R 44 ]]> <![CDATA[R 45 ]]> … <![CDATA[R 4y ]]> <![CDATA[C5]]> <![CDATA[R 51 ]]> <![CDATA[R 52 ]]> <![CDATA[R 53 ]]> <![CDATA[R 54 ]]> <![CDATA[R 55 ]]> … <![CDATA[R 5y ]]> … … … … … … … … <![CDATA[C x ]]> <![CDATA[R x1 ]]> <![CDATA[R x2 ]]> <![CDATA[R x3 ]]> <![CDATA[R x4 ]]> <![CDATA[R x5 ]]> … <![CDATA[R xy ]]> Next, arrange the temperature rise rates from high to low and divide them into three equal parts. R satisfy R 11 ≤ R ≤ It is called the low temperature rise rate, and the corresponding frequency and ratio are the first frequency and the first ratio, also known as "low frequency, high ratio"; the temperature rise rate R satisfy ≤ R ≤ It is called the medium temperature rise rate, and the corresponding frequency and ratio are the second frequency and the second ratio, also known as "medium frequency, medium ratio"; the temperature rise rate R satisfy ≤ R ≤ R xy It is called the high temperature rise rate, and the corresponding frequency and ratio are the third frequency and the third ratio, also known as “low frequency, high ratio”.

[0055] The current temperature of the battery T , temperature rise rate d T / d t , ideal temperature a ℃ and ideal temperature rise rate b ℃ / min, the system automatically matches the appropriate low-temperature charging mode for the current moment, and then calculates the self-heating temperature rise rate required in this mode according to the remaining charging capacity of the low-temperature charging stage, the remaining target low-temperature charging time, the charging mapping table and the actual laboratory measured data, and selects the corresponding AC self-heating frequency and rate from the corresponding self-heating temperature rise rate mapping table. For example, in the low-temperature charging forward-looking control mode, the control system does not need to increase the heating rate too much, but only makes preventive settings for the temperature rise rate to prevent the temperature from dropping below the ideal temperature. Therefore, the system selects the "high frequency, low rate" AC self-heating scheme, selects the matching frequency and rate between the various frequency and rate combinations of the low temperature rise rate, and at the same time changes the exit heating temperature of heating methods such as liquid heating, membrane heating or direct heating to x+ Δ x ℃, thereby extending the battery heating time, improving the battery's temperature performance and charging time.

[0056] When the battery temperature regulating device is controlled to perform heating and / or heat preservation actions according to the temperature and the temperature rise rate, when the battery assembly is in the low-temperature charging mode, and the temperature is greater than the first preset temperature threshold and the temperature rise rate is less than or equal to the first preset temperature rise rate threshold, the battery assembly enters the low-temperature charging prospective control mode, which indicates that the current temperature of the battery meets the requirements, but the temperature rise rate does not meet the standards, and the battery may have a risk of not meeting expectations in the future, and there is a slight risk of increasing the low-temperature charging time, so that the battery enters the heating mode that best matches and is the best for the current battery after the temperature is greater than the first preset temperature threshold and the temperature rise rate is less than or equal to the first preset temperature rise rate threshold; in the low-temperature charging prospective control mode, since there is a slight risk of increasing the low-temperature charging time, the heating device in the battery temperature regulating device is controlled to heat the battery assembly with high-frequency AC and low-rate AC self-heating and / or initial heating strategy, and the exit temperature of the low-temperature charging mode is changed to x+ Δ x ℃, thereby extending the heating time of the battery, improving the temperature performance and charging time of the battery, so as to achieve the optimal heating strategy for matching the current battery, and the first preset temperature threshold and the first preset temperature rise rate threshold are variable values ​​set according to experiments and user needs, so as to flexibly control the vehicle to select the optimal heating mode and heating strategy when the current charging environment temperature is greater than the first preset temperature threshold and the temperature rise rate is less than or equal to the first preset temperature rise rate threshold.

[0057] In some embodiments, the battery temperature adjustment device is controlled to perform heating and / or heat preservation actions according to the temperature and the temperature rise rate, including: when the battery assembly is in a low-temperature charging mode and the temperature is less than or equal to a first preset temperature threshold and the temperature rise rate is greater than the first preset temperature rise rate threshold, determining that the battery assembly is in a low-temperature charging acceleration control mode; in the low-temperature charging acceleration control mode, the heating device in the battery temperature adjustment device is controlled to heat the battery assembly with a second frequency AC and a second rate AC self-heating and / or an initial heating strategy, the first frequency is greater than the second frequency, and the first rate is less than the second rate.

[0058] In the embodiment, the low-temperature charging acceleration control mode is a function that requires providing more heating to the battery under low-temperature conditions compared to other control modes, so as to ensure that the battery can be charged normally and maintain the best working state under low-temperature conditions; the second frequency AC self-heating and the second rate AC self-heating, for example, the system selects the "medium frequency, medium rate" rate AC self-heating scheme in the above embodiment, wherein the first frequency is greater than the second frequency, and the first rate is less than the second rate.

[0059] When the battery temperature regulating device is controlled to perform heating and / or heat preservation actions according to the temperature and the temperature rise rate, when the battery enters the low-temperature charging mode, and the temperature is less than or equal to the first preset temperature threshold and the temperature rise rate is greater than the first preset temperature rise rate threshold, the battery assembly enters the low-temperature charging acceleration control mode, which indicates that the current temperature of the battery does not meet the requirements, but the temperature rise rate can meet the corresponding requirements. Although the battery may meet the temperature standard in the future, it will take a certain amount of time and there is a risk of increasing the low-temperature charging time, so that the battery enters the heating mode that best matches and is the best for the current battery after the temperature is less than or equal to the first preset temperature threshold and the temperature rise rate is greater than the first preset temperature rise rate threshold; in the low-temperature charging acceleration control mode, since there is a risk of increasing the low-temperature charging time, the heating device in the battery temperature regulating device is controlled to heat the battery assembly with medium-frequency AC and medium-rate AC self-heating and / or initial heating strategy, and the exit temperature of the low-temperature charging mode is changed to x+ 2Δ x ℃, by adjusting the self-heating parameters and exiting the temperature adjustment by other heating methods, to make up for the charging time that is delayed due to the current temperature not meeting the standard, so as to achieve the optimal heating strategy for matching the current battery, and the first preset temperature threshold and the first preset temperature rise rate threshold are variable values ​​set according to experiments and user needs, so as to flexibly control the vehicle to select the optimal heating mode and heating strategy when the current charging environment temperature is less than or equal to the first preset temperature threshold and the temperature rise rate is greater than the first preset temperature rise rate threshold.

[0060] In some embodiments, a battery temperature regulating device is controlled to perform heating and / or heat preservation actions according to the temperature and the temperature rise rate, including: when the battery assembly is in a low-temperature charging mode and the temperature is less than or equal to a first preset temperature threshold and the temperature rise rate is less than or equal to the first preset temperature rise rate threshold, determining that the battery assembly is in a low-temperature charging catch-up control mode; in the low-temperature charging catch-up control mode, controlling the heating device in the battery temperature regulating device to heat the battery assembly with a third frequency AC and a third rate AC self-heating and / or an initial heating strategy, wherein the third frequency is less than the second frequency, and the third rate is greater than the second rate.

[0061] In the embodiment, the low-temperature charging catch-up control mode is a function that requires providing the battery with more heating than other control modes in a low-temperature environment, so as to ensure that the battery can be charged normally and maintain the best working state under low-temperature conditions; the third frequency AC self-heating and the third rate AC self-heating, for example, the system selects the "low frequency, high rate" rate AC self-heating scheme in the above embodiment, wherein the third frequency is less than the second frequency, and the third rate is greater than the second rate.

[0062] When the battery temperature regulating device is controlled to perform heating and / or heat preservation actions according to the temperature and the temperature rise rate, when the battery enters the low-temperature charging mode, and the temperature is less than or equal to the first preset temperature threshold and the temperature rise rate is less than or equal to the first preset temperature rise rate threshold, the battery assembly enters the low-temperature charging catch-up control mode, which indicates that the current temperature and temperature rise rate of the battery do not meet the requirements, and the risk of the low-temperature charging time of the battery not meeting the standard is very high, so that the battery enters the heating mode that best matches and is the best for the current battery after the temperature is less than or equal to the first preset temperature threshold and the temperature rise rate is less than or equal to the first preset temperature rise rate threshold; in the low-temperature charging catch-up control mode, since the risk of the low-temperature charging time of the battery not meeting the standard is very high, the heating device in the battery temperature regulating device is controlled to heat the battery assembly with low-frequency AC and high-rate AC self-heating and / or initial heating strategy, and the exit temperature of the low-temperature charging mode is changed to x+ 3Δ x ℃, adjust all heating parameters to the optimal level to compensate for the charging time as much as possible, so as to achieve the optimal heating strategy for matching the current battery, and the first preset temperature threshold and the first preset temperature rise rate threshold are variable values ​​set according to experiments and user needs, so as to flexibly control the vehicle to select the optimal heating mode and heating strategy when the current charging environment temperature is less than or equal to the first preset temperature threshold and the temperature rise rate is less than or equal to the first preset temperature rise rate threshold.

[0063] In some embodiments, after controlling the battery temperature regulating device to perform heating and / or heat preservation actions according to the temperature and the temperature rise rate, it also includes: obtaining the duration that the battery assembly is in the low-temperature charging catch-up control mode at a set time; when the ratio of the duration to the total low-temperature charging duration is greater than a preset ratio, controlling the heating device in the battery temperature regulating device to heat the battery assembly with self-heating and / or an initial heating strategy at a constant temperature rise rate.

[0064] In an embodiment, the set time is a time selected based on demand and experiments to constrain whether the battery can reach the target charging time; the preset ratio is a risk assessment critical value for determining whether the battery can reach the target charging time, for example, it is preset to 30%~70%; constant temperature rise rate self-heating heats the battery at a constant temperature rise rate.

[0065] After the battery is heated to the exit temperature, the battery exits heating, and the duration of the battery assembly in the low-temperature charging catch-up control mode at the set time is obtained, which serves as a basis for evaluating whether the battery has a risk of failing to reach the target charging time. When the ratio of the duration of the low-temperature charging catch-up control mode to the total low-temperature charging time is greater than the preset ratio, it indicates that the low-temperature condition is relatively severe and the risk of achieving the low-temperature charging time is extremely high, so the heating device in the battery temperature regulating device is controlled to heat the battery assembly with a constant temperature rise rate self-heating and / or an initial heating strategy. For example, in the low-temperature charging mode, the overall heating strategy is switched to a constant temperature rise rate self-heating and the exit temperature is switched to a constant temperature rise rate self-heating in the subsequent time after the set time. x+ 3Δ x ℃, according to experimental test and other big data performance, it can be concluded that the relationship between the self-heating temperature rise rate set as dT / dt and the excitation current set as I, the AC frequency set as F, and the battery temperature set as T is dT / dt=f(I,F,T). As the temperature rises, the battery's own impedance decreases. Therefore, under the same excitation current and AC frequency, the higher the battery temperature, the smaller the temperature rise rate. Therefore, in order to overcome this defect, the constant temperature rise rate self-heating scheme is based on experimental test and other big data. In the process of battery temperature rising, the appropriate excitation current I and AC frequency F are selected, so that the self-heating temperature rise rate always remains at the same level as the battery temperature rises and does not decrease, and then the exit temperature of heating methods such as membrane heating, direct heating or liquid heating is changed to x+ 3Δ x ℃, thereby increasing the charging current, extending the heating time, and significantly shortening the charging time.

[0066] In some embodiments, the battery temperature adjustment device is controlled to perform heating and / or insulation actions according to the temperature and the temperature rise rate, including: when the battery assembly is in the normal temperature charging mode and the temperature is greater than the second preset temperature threshold and the temperature rise rate is greater than the second preset temperature rise rate threshold, determining that the battery assembly is in the normal temperature charging preferential control mode; in the normal temperature charging preferential control mode, controlling the insulation device in the battery temperature adjustment device to maintain the initial action.

[0067] In an embodiment, the normal temperature charging mode is a mode in which the battery exits heating after reaching the heating exit temperature, and the battery needs to be kept warm to overcome the impact of the low temperature environment on charging; the second preset temperature threshold and the second preset temperature rise rate threshold are the ideal temperature and ideal temperature rise rate that the battery needs to reach at each normal temperature charging moment, and are also the critical values ​​for judging whether the battery enters a certain charging control mode. The preset value can be set according to demand, experimental test, target normal temperature charging time and target total charging time, etc.; the normal temperature charging preferential control mode is a charging mode that extends the battery life by optimizing the charging strategy under normal temperature environment.

[0068] When the battery temperature regulating device is controlled to perform heating and / or heat preservation actions according to the temperature and the temperature rise rate, the battery exits heating after reaching the heating exit temperature and enters the normal temperature charging mode, and the temperature is greater than the second preset temperature threshold and the temperature rise rate is greater than the second preset temperature rise rate threshold, this indicates that the current heat dissipation loss of the battery is small, the temperature and the temperature rise rate are high, and it is expected that the target charging time can be achieved, so the battery assembly enters the normal temperature charging preferential control mode, so that the battery can enter the heat preservation charging mode that best matches and is optimal for the current battery after the temperature is greater than the second preset temperature threshold and the temperature rise rate is greater than the second preset temperature rise rate threshold. mode, namely, the optimal control mode for normal temperature charging; because in the optimal control mode for normal temperature charging, it is expected that the target charging time can be achieved, so the current insulation structure is not adjusted, and the insulation device in the battery temperature regulating device is controlled to maintain the initial action, so as to achieve the optimal insulation charging strategy matching the current battery, and the second preset temperature threshold and the second preset temperature rise rate threshold are variable values ​​set according to experiments and user needs, so as to flexibly control the vehicle to select the optimal insulation charging mode and insulation charging strategy when the current charging environment temperature is greater than the second preset temperature threshold and the temperature rise rate is greater than the second preset temperature rise rate threshold.

[0069] In some embodiments, the battery temperature adjustment device is controlled to perform heating and / or insulation actions according to the temperature and the temperature rise rate, including: when the battery assembly is in the normal temperature charging mode and the temperature is greater than the second preset temperature threshold and the temperature rise rate is less than or equal to the second preset temperature rise rate threshold, determining that the battery assembly is in the normal temperature charging look-ahead control mode; in the normal temperature charging look-ahead control mode, controlling the insulation material of the insulation device in the battery temperature adjustment device to turn on.

[0070] In an embodiment, the normal temperature charging look-ahead control mode is a mode that requires fewer insulation strategies to be added to ensure that the battery remains within an ideal temperature range during the charging process; the insulation material is a material that insulates the battery, such as a porous insulation material. When the insulation demand of the battery is not high, the material is in a compressed state; when the insulation demand of the battery is high, the material is released and the internal insulation structure is automatically filled with external air, thereby greatly increasing the thermal resistance of the material. In some embodiments, the porous thermal insulation material can be made into a porous structure by PO foam (cross-linked polyolefin foam), PU foam (polyurethane foam), aerogel and other similar commonly used thermal insulation materials with the aid of a certain process; the thermal insulation device is at the bottom of the battery, which is a device for insulating the battery. For example, a low-emissivity material is covered on the bottom of the battery, thereby greatly reducing the radiation heat exchange between the battery and the external environment. The material can be a thermal insulation car cover coated with a low-emissivity coating, or a coating coated with a low-emissivity material, which is adhered to the battery bottom plate with a sticky material such as glue or adsorbed on the battery bottom plate with a magnetic material such as a magnet.

[0071] When the battery temperature regulating device is controlled to perform heating and / or heat preservation actions according to the temperature and the temperature rise rate, when the battery reaches the heating exit temperature, the heating is exited and the normal temperature charging mode is entered, and the temperature is greater than the second preset temperature threshold and the temperature rise rate is less than or equal to the second preset temperature rise rate threshold, this indicates that the current temperature of the battery meets the requirements, but the temperature rise rate does not meet the standards, and the battery may have a risk of not meeting expectations in the future, and there is a slight risk of increasing the normal temperature charging time, so the battery assembly enters the normal temperature charging forward control mode, so as to achieve the battery entering the best matching and optimal heat preservation charging mode for the current battery after the temperature is greater than the second preset temperature threshold and the temperature rise rate is less than or equal to the second preset temperature rise rate threshold, that is, the normal temperature charging forward control. mode; because there is a slight risk of increasing the normal temperature charging time in the normal temperature charging forward control mode, the insulation material of the insulation device in the battery temperature regulating device is controlled to open, for example, the porous insulation material of the battery in a compressed state is released, which greatly increases its thermal resistance and reduces the heat conduction of the vehicle body and the environment to the battery, thereby improving the insulation effect and charging time of the battery, so as to achieve the optimal insulation charging strategy for matching the current battery, and the second preset temperature threshold and the second preset temperature rise rate threshold are variable values ​​set according to experiments and user needs, so as to flexibly control the vehicle to select the optimal insulation charging mode and insulation charging strategy when the current charging environment temperature is greater than the second preset temperature threshold and the temperature rise rate is less than or equal to the second preset temperature rise rate threshold.

[0072] In some embodiments, the battery temperature adjustment device is controlled to perform heating and / or heat preservation actions according to the temperature and the temperature rise rate, including: when the battery assembly is in the normal temperature charging mode and the temperature is less than or equal to the second preset temperature threshold and the temperature rise rate is greater than the second preset temperature rise rate threshold, determining that the battery assembly is in the normal temperature charging acceleration control mode; in the normal temperature charging acceleration control mode, controlling the heat preservation device in the battery temperature adjustment device to cover the bottom of the battery assembly.

[0073] In the embodiment, the normal temperature charging acceleration control mode is a mode that requires adding more insulation strategies to ensure that the battery is kept within the ideal temperature range during the charging process; when the battery temperature adjustment device is controlled to perform heating and / or insulation actions according to the temperature and the temperature rise rate, when the battery reaches the heating exit temperature, the heating is exited and the normal temperature charging mode is entered, and the temperature is less than or equal to the second preset temperature threshold and the temperature rise rate is greater than the second preset temperature rise rate threshold, this indicates that the current temperature of the battery does not meet the requirements, but the battery can meet the corresponding requirements by relying on its own heat temperature rise rate. Although the battery has a temperature in the future, It is possible to meet the standard, but it will take a certain amount of time, and there is a risk of increasing the normal temperature charging time, so the battery assembly enters the normal temperature charging acceleration control mode, so that the battery enters the best matching and optimal heat preservation charging mode for the current battery after the temperature is less than or equal to the second preset temperature threshold and the temperature rise rate is greater than the second preset temperature rise rate threshold, that is, the normal temperature charging acceleration control mode; because in the normal temperature charging acceleration control mode, there is a risk of increasing the normal temperature charging time, so the heat preservation device in the battery temperature regulating device covers the bottom of the battery assembly, for example, driven by a motor, and the heat preservation covering device is pulled up on the bottom of the battery, and it is assumed that: Φ ‌ is the radiation heat transfer, which indicates the amount of heat transferred by radiation per unit time; ε It is the surface reflectivity, which indicates the reflectivity of the surface of an object, and its value is between 0 and 1; σ is the Stefan-Boltzmann constant, which is approximately 5.67×10^-8 W / m²K 4 ; A is the surface area of ​​the object, indicating the area of ​​the object surface involved in radiation heat transfer; T1 is the surface temperature of the object, indicating the temperature of the radiation source; ‌T2‌ is the ambient temperature of the object, indicating the temperature of the object receiving radiation. The radiation heat transfer formula of a small object in a large room is Φ = εσA ( ) It can be seen that the radiation heat dissipation of the battery in a low temperature environment accounts for a significant proportion, because the units of the battery temperature T1 and the ambient temperature T2 in the formula are both Kelvin, and the temperatures are both in the fourth power form. Therefore, in order to significantly reduce the radiation heat dissipation of the battery, the present invention uses a thermal insulation covering device to cover the lower surface of the battery, ensuring that the emissivity of the outer surface is reduced from the usual 0.9~1.0 to below 0.3, thereby significantly improving the thermal insulation effect of the battery, making up for the charging time that is delayed due to the current temperature rise rate not meeting the standard, so as to achieve the optimal thermal insulation charging strategy matching the current battery, and the second preset temperature threshold and the second preset temperature rise rate threshold are variable values ​​set according to experiments and user needs, so as to flexibly control the vehicle when the current charging environment temperature is less than or equal to the second preset temperature threshold and the temperature rise rate is greater than the second preset temperature rise rate threshold. Select the optimal thermal insulation charging mode and thermal insulation charging strategy.

[0074] In some embodiments, the battery temperature adjustment device is controlled to perform heating and / or insulation actions according to the temperature and the temperature rise rate, including: when the battery assembly is in the normal temperature charging mode and the temperature is less than or equal to the second preset temperature threshold and the temperature rise rate is less than or equal to the second preset temperature rise rate threshold, determining that the battery assembly is in the normal temperature charging catch-up control mode; in the normal temperature charging catch-up control mode, the insulation material of the insulation device of the battery is controlled to be turned on and the insulation device covers the bottom of the battery assembly.

[0075] In an embodiment, the normal temperature charging catch-up control mode is a mode that requires adding many insulation strategies to ensure that the battery remains within an ideal temperature range during the charging process; when the battery temperature regulating device is controlled to perform heating and / or insulation actions according to the temperature and temperature rise rate, when the battery reaches the heating exit temperature, the heating is exited and the normal temperature charging mode is entered, and the temperature is less than or equal to the second preset temperature threshold and the temperature rise rate is less than or equal to the second preset temperature rise rate threshold, this indicates that the current temperature and temperature rise rate of the battery do not meet the requirements, and the risk of non-compliance of the normal temperature charging time of the battery is very high, so the battery assembly enters the normal temperature charging catch-up control mode to achieve the battery entering the best match with the current battery after the temperature is less than or equal to the second preset temperature threshold and the temperature rise rate is less than or equal to the second preset temperature rise rate threshold. It is also the optimal heat preservation charging mode, that is, the normal temperature charging catch-up control mode; because in the normal temperature charging catch-up control mode, the risk of the battery's normal temperature charging time not meeting the standard is very high, so the insulation material of the battery's insulation device is controlled to open and the insulation device covers the bottom of the battery assembly. For example, two measures are adopted at the same time, such as releasing porous insulation materials and pulling up the insulation covering device, to make up for the charging time as much as possible, so as to achieve the optimal heat preservation charging strategy that matches the current battery, and the second preset temperature threshold and the second preset temperature rise rate threshold are variable values ​​set according to experiments and user needs, so as to flexibly control the vehicle when the current charging environment temperature is less than or equal to the second preset temperature threshold and the temperature rise rate is less than or equal to the second preset temperature rise rate threshold. Select the optimal heat preservation charging mode and heat preservation charging strategy.

[0076] In some embodiments, the battery temperature regulating device also includes a wind shield device. When it is determined that the battery assembly is in normal temperature charging mode, it also includes: obtaining the wind speed at the bottom of the battery assembly; when the wind speed is higher than a preset wind speed, controlling the wind shield device to open.

[0077] In an embodiment, Figure 2 The figure shows a schematic diagram of the structure of a battery management system according to an embodiment of the present invention. The preset wind speed is a critical value for determining whether the windshield device needs to be turned on for windshield protection. It is a preset value obtained according to demand, battery temperature, ideal temperature, ideal temperature rise rate, experimental test, etc., for example, it is set to 0.5m / s~1.5m / s; the windshield device 18 is a device for windshield protection of the battery. For example, when the battery does not need windshield protection, the device is stored in the vehicle body and does not extend out of the battery. When the battery needs windshield protection, the windshield device is released under the battery and connected to the ground to block the entry of wind. The windshield device is a windshield made of metal materials such as aluminum plates or steel plates, or a windshield curtain made of non-metallic materials such as plastics or composite materials; the wind speed measuring device measures the wind speed at the bottom of the battery. For example, the wind speed measuring device can be a mechanical anemometer, a differential pressure anemometer, or a thermal anemometer.

[0078] The battery temperature regulating device also includes a windshield. During the battery charging process at room temperature, a wind speed measuring device is installed at the bottom of the battery to obtain the wind speed at the bottom of the battery assembly, which is used as a basis for judging whether the windshield needs to be turned on. When the wind speed at the bottom is higher than the preset wind speed, the windshield is controlled to be turned on. For example, the windshield mode is activated, and the windshield 18 that pops up from all sides of the battery and is directly inserted into the ground is ensured to isolate the adverse effects of cold wind from the external environment on the heat dissipation of the battery, thereby greatly reducing convective heat transfer. If the external environment disturbance is too severe, the battery temperature drops too drastically, and the temperature drops to x+ nΔ x If the temperature is below ℃, the low temperature charging mode will be restarted to start heating the battery.

[0079] In some embodiments, before controlling the battery temperature adjustment device to perform a heating action and / or a heat preservation action according to the temperature and the temperature rise rate, it also includes: when the temperature is less than or equal to the charging temperature threshold, determining that the battery assembly is in a low-temperature charging mode; when the temperature is greater than the charging temperature threshold, determining that the battery assembly is in a normal temperature charging mode.

[0080] In the embodiment, the charging temperature threshold is a critical value for determining whether the battery enters a low temperature charging mode or a normal temperature charging mode, and is a temperature threshold obtained based on the battery temperature, total charging time, low temperature target charging time, normal temperature target charging time, experimental tests, and user needs, etc. Before the battery temperature regulating device is controlled to perform a heating action and / or a heat preservation action according to the temperature and the temperature rise rate, when the battery temperature is less than or equal to the charging temperature threshold, the battery assembly enters a low temperature charging mode to implement a corresponding low temperature charging strategy; when the battery temperature is greater than the charging temperature threshold, the battery assembly enters a normal temperature charging mode to implement a corresponding normal temperature charging strategy.

[0081] The control method of the battery temperature regulating device according to the embodiment of the present invention is described in detail below with reference to the drawings.

[0082] like Figure 4 , which is a flow chart of a control method of a battery temperature regulating device according to another embodiment of the present invention, the control method of a battery temperature regulating device according to the embodiment of the present invention at least includes steps S10 - S52 .

[0083] Step S10, start.

[0084] Step S11, obtaining the total charging time of the battery assembly at the charging environment temperature.

[0085] Step S12, determining a low temperature target charging time and a normal temperature target charging time.

[0086] Step S13, obtaining the current temperature and temperature rise rate of the battery assembly under the target charging time.

[0087] Step S14, determining whether the temperature is less than or equal to the charging temperature threshold. If so, executing step S15; otherwise, executing step S34.

[0088] Step S15, determining that the battery assembly is in low temperature charging mode.

[0089] Step S16, obtaining the temperature threshold and temperature rise rate threshold at the current moment required for the battery assembly to reach the target charging time.

[0090] Step S17: the temperature is greater than a first preset temperature threshold and the temperature rise rate is greater than a first preset temperature rise rate threshold.

[0091] Step S18, determining that the battery assembly is in a low temperature charging priority control mode.

[0092] Step S19, controlling the heating device to heat the battery assembly using an initial heating strategy.

[0093] Step S20: the temperature is greater than a first preset temperature threshold and the temperature rise rate is less than or equal to a first preset temperature rise rate threshold.

[0094] Step S21, determining whether the battery assembly is in a low-temperature charging look-ahead control mode.

[0095] Step S22, controlling the heating device to heat the battery assembly using a first frequency AC and a first rate AC self-heating and / or an initial heating strategy.

[0096] Step S23: the temperature is less than or equal to a first preset temperature threshold and the temperature rise rate is greater than the first preset temperature rise rate threshold.

[0097] Step S24, determining that the battery assembly is in a low temperature charging acceleration control mode.

[0098] Step S25, controlling the heating device to heat the battery assembly using a second frequency AC and a second rate AC self-heating and / or an initial heating strategy.

[0099] Step S26: the temperature is less than or equal to a first preset temperature threshold and the temperature rise rate is less than or equal to a first preset temperature rise rate threshold.

[0100] Step S27, determining that the battery assembly is in a low temperature charging catch-up control mode.

[0101] Step S28, controlling the heating device to heat the battery assembly using a third frequency AC and a third rate AC self-heating and / or an initial heating strategy.

[0102] Step S29, obtaining the duration that the battery assembly is in the low temperature charging catch-up control mode at the set time.

[0103] Step S30, determining whether the ratio of the duration of the low-temperature charging catch-up control mode to the total duration of low-temperature charging is greater than a preset ratio. If so, executing step S32; otherwise, executing step S31.

[0104] Step S31, maintaining the original charging control mode.

[0105] Step S32, controlling the heating device to heat the battery assembly by self-heating at a constant temperature rise rate and / or an initial heating strategy.

[0106] Step S33, determine whether the temperature is greater than the charging temperature threshold. If so, execute step S34; otherwise, execute step S16.

[0107] Step S34, determining that the battery assembly is in normal temperature charging mode.

[0108] Step S35, obtaining the temperature threshold and temperature rise rate threshold required for the battery assembly to reach the target charging time at the current moment.

[0109] Step S36: the temperature is greater than a second preset temperature threshold and the temperature rise rate is greater than a second preset temperature rise rate threshold.

[0110] Step S37, determining that the battery assembly is in the normal temperature charging priority control mode.

[0111] Step S38, controlling the heat preservation device in the battery temperature regulating device to maintain the initial operation.

[0112] Step S39: the temperature is greater than a second preset temperature threshold and the temperature rise rate is less than or equal to a second preset temperature rise rate threshold.

[0113] Step S40, determining that the battery assembly is in a normal temperature charging look-ahead control mode.

[0114] Step S41, controlling the heat preservation material of the heat preservation device in the battery temperature regulating device to open.

[0115] Step S42: the temperature is less than or equal to a second preset temperature threshold and the temperature rise rate is greater than a second preset temperature rise rate threshold.

[0116] Step S43, determining that the battery assembly is in a normal temperature charging acceleration control mode.

[0117] Step S44, controlling the heat preservation device in the battery temperature regulating device to cover the bottom of the battery assembly.

[0118] Step S45, the temperature is less than or equal to a second preset temperature threshold and the temperature rise rate is less than or equal to a second preset temperature rise rate threshold.

[0119] Step S46, determining that the battery assembly is in a normal temperature charging catch-up control mode.

[0120] Step S47, controlling the heat preservation material of the heat preservation device of the battery to open and the heat preservation device to cover the bottom of the battery assembly.

[0121] Step S48, obtaining the wind speed at the bottom of the battery assembly.

[0122] Step S49, determining whether the wind speed is higher than a preset wind speed. If so, executing step S51; otherwise, executing step S50.

[0123] Step S50, maintaining the original charging control mode.

[0124] Step S51, controlling the windshield device to open.

[0125] Step S52, determining whether the temperature is less than or equal to the charging temperature threshold. If so, executing step S15; otherwise, executing step S35.

[0126] According to the control method of the battery temperature regulating device of the embodiment of the present invention, by obtaining the current temperature and temperature rise rate of the battery assembly, the battery temperature regulating device is controlled to perform heating and / or heat preservation actions according to the temperature and temperature rise rate, so as to realize flexible control of the battery assembly to perform different heating and / or heat preservation actions under different environments according to different temperature and temperature rise rate conditions, thereby improving the adaptability of the heating and / or heat preservation of the battery assembly to the environment, ensuring that the vehicle energy consumption is reduced by performing corresponding heating and / or heat preservation actions under better environments, and flexibly using different heating and / or heat preservation methods under low temperature and harsh environments to make the battery charging time reach the target charging time, thereby improving the user's car experience.

[0127] The following describes a computer readable storage medium according to an embodiment of the present invention.

[0128] The computer-readable storage medium of the embodiment of the present invention stores a control program of the battery temperature regulating device. When the control program of the battery temperature regulating device is executed by the processor, the device installed with the control program of the battery temperature regulating device implements the vehicle control method as described in the above embodiment.

[0129] The following describes a computer program product according to an embodiment of the present invention.

[0130] The computer program product of the embodiment of the present invention includes a computer program. When the computer program is executed by a processor, the control method of the battery temperature adjustment device as described in the above embodiment is implemented.

[0131] According to the computer program product of the embodiment of the present invention, by obtaining the current temperature and temperature rise rate of the battery assembly, the battery temperature adjustment device is controlled to perform heating and / or insulation actions according to the temperature and temperature rise rate, so as to flexibly control the battery assembly to perform different heating and / or insulation actions in different environments according to different temperature and temperature rise rate conditions, thereby improving the adaptability of the heating and / or insulation of the battery assembly to the environment, ensuring that the vehicle energy consumption is reduced by performing corresponding heating and / or insulation actions in a better environment, and flexibly using different heating and / or insulation methods in a low-temperature and harsh environment to make the battery charging time reach the target charging time, thereby improving the user's vehicle experience.

[0132] Reference below Figure 5 An electronic device according to an embodiment of the present invention is described.

[0133] like Figure 5 , which is a block diagram of an electronic device according to an embodiment of the present invention, the electronic device 100 according to the embodiment of the present invention includes: an acquisition module 101 and a control module 102 .

[0134] The acquisition module 101 is used to acquire the current temperature and temperature rise rate of the battery assembly; the control module 102 is used to control the battery temperature adjustment device to perform heating and / or heat preservation actions according to the temperature and temperature rise rate. According to the electronic device 100 of the embodiment of the present invention, the current temperature and temperature rise rate of the battery assembly are obtained through the acquisition module 101, and the control module 102 controls the battery temperature adjustment device to perform heating and / or insulation actions according to the temperature and temperature rise rate, so as to flexibly control the battery assembly to perform different heating and / or insulation actions in different environments according to different temperature and temperature rise rate conditions, thereby improving the adaptability of the heating and / or insulation of the battery assembly to the environment, ensuring that the vehicle energy consumption is reduced by performing corresponding heating and / or insulation actions in a better environment, and flexibly using different heating and / or insulation methods in a low-temperature and harsh environment to make the battery charging time reach the target charging time, thereby improving the user's car experience.

[0135] In some embodiments, the acquisition module 101 acquires the temperature and temperature rise rate of the battery assembly at the current moment, including: acquiring the total charging time of the battery assembly at the charging environment temperature; determining the target charging time based on the total charging time, the target charging time including the low-temperature target charging time and the normal-temperature target charging time; acquiring the temperature and temperature rise rate of the battery assembly at the current moment under the target charging time.

[0136] In some embodiments, the control module 102 controls the battery temperature adjustment device to perform heating and / or heat preservation actions according to the temperature and the temperature rise rate, including: when the battery assembly is in a low-temperature charging mode and the temperature is greater than a first preset temperature threshold and the temperature rise rate is greater than a first preset temperature rise rate threshold, determining that the battery assembly is in a low-temperature charging priority control mode; in the low-temperature charging priority control mode, controlling the heating device in the battery temperature adjustment device to heat the battery assembly with an initial heating strategy.

[0137] In some embodiments, the control module 102 controls the battery temperature adjustment device to perform heating and / or heat preservation actions according to the temperature and the temperature rise rate, including: when the battery assembly is in a low-temperature charging mode and the temperature is greater than a first preset temperature threshold and the temperature rise rate is less than or equal to the first preset temperature rise rate threshold, determining that the battery assembly is in a low-temperature charging look-ahead control mode; in the low-temperature charging look-ahead control mode, controlling the heating device in the battery temperature adjustment device to heat the battery assembly with a first frequency AC and a first rate AC self-heating and / or an initial heating strategy.

[0138] In some embodiments, the control module 102 controls the battery temperature adjustment device to perform heating and / or heat preservation actions according to the temperature and the temperature rise rate, including: when the battery assembly is in a low-temperature charging mode and the temperature is less than or equal to a first preset temperature threshold and the temperature rise rate is greater than the first preset temperature rise rate threshold, determining that the battery assembly is in a low-temperature charging acceleration control mode; in the low-temperature charging acceleration control mode, controlling the heating device in the battery temperature adjustment device to heat the battery assembly with a second frequency AC and a second rate AC self-heating and / or an initial heating strategy, the first frequency is greater than the second frequency, and the first rate is less than the second rate.

[0139] In some embodiments, the control module 102 controls the battery temperature adjustment device to perform heating and / or heat preservation actions according to the temperature and the temperature rise rate, including: when the battery assembly is in a low-temperature charging mode and the temperature is less than or equal to a first preset temperature threshold and the temperature rise rate is less than or equal to the first preset temperature rise rate threshold, determining that the battery assembly is in a low-temperature charging catch-up control mode; in the low-temperature charging catch-up control mode, controlling the heating device in the battery temperature adjustment device to heat the battery assembly with a third frequency AC and a third rate AC self-heating and / or an initial heating strategy, the third frequency is less than the second frequency, and the third rate is greater than the second rate.

[0140] In some embodiments, after the control module 102 controls the battery temperature adjustment device to perform heating and / or heat preservation actions according to the temperature and the temperature rise rate, it also includes: obtaining the duration of the battery assembly in the low-temperature charging catch-up control mode at the set time; when the ratio of the duration to the total low-temperature charging duration is greater than a preset ratio, controlling the heating device in the battery temperature adjustment device to heat the battery assembly with self-heating and / or an initial heating strategy at a constant temperature rise rate.

[0141] In some embodiments, the control module 102 controls the battery temperature adjustment device to perform heating and / or insulation actions according to the temperature and the temperature rise rate, including: when the battery assembly is in the normal temperature charging mode and the temperature is greater than the second preset temperature threshold and the temperature rise rate is greater than the second preset temperature rise rate threshold, determining that the battery assembly is in the normal temperature charging priority control mode; in the normal temperature charging priority control mode, controlling the insulation device in the battery temperature adjustment device to maintain the initial action.

[0142] In some embodiments, the control module 102 controls the battery temperature adjustment device to perform heating and / or insulation actions according to the temperature and the temperature rise rate, including: when the battery assembly is in the normal temperature charging mode and the temperature is greater than the second preset temperature threshold and the temperature rise rate is less than or equal to the second preset temperature rise rate threshold, determining that the battery assembly is in the normal temperature charging look-ahead control mode; in the normal temperature charging look-ahead control mode, controlling the insulation material of the insulation device in the battery temperature adjustment device to turn on.

[0143] In some embodiments, the control module 102 controls the battery temperature adjustment device to perform heating and / or heat preservation actions according to the temperature and the temperature rise rate, including: when the battery assembly is in the normal temperature charging mode and the temperature is less than or equal to the second preset temperature threshold and the temperature rise rate is greater than the second preset temperature rise rate threshold, determining that the battery assembly is in the normal temperature charging acceleration control mode; in the normal temperature charging acceleration control mode, controlling the heat preservation device in the battery temperature adjustment device to cover the bottom of the battery assembly.

[0144] In some embodiments, the control module 102 controls the battery temperature adjustment device to perform heating and / or insulation actions according to the temperature and the temperature rise rate, including: when the battery assembly is in the normal temperature charging mode and the temperature is less than or equal to the second preset temperature threshold and the temperature rise rate is less than or equal to the second preset temperature rise rate threshold, determining that the battery assembly is in the normal temperature charging catch-up control mode; in the normal temperature charging catch-up control mode, controlling the insulation material of the battery's insulation device to turn on and the insulation device to cover the bottom of the battery assembly.

[0145] In some embodiments, the battery temperature regulating device also includes a wind shield. When the control module 102 determines that the battery assembly is in normal temperature charging mode, it also includes: obtaining the wind speed at the bottom of the battery assembly; when the wind speed is higher than the preset wind speed, controlling the wind shield to open.

[0146] In some embodiments, before the control module 102 controls the battery temperature adjustment device to perform heating and / or heat preservation actions according to the temperature and the temperature rise rate, it also includes: when the temperature is less than or equal to the charging temperature threshold, determining that the battery assembly is in a low-temperature charging mode; when the temperature is greater than the charging temperature threshold, determining that the battery assembly is in a normal temperature charging mode.

[0147] According to the electronic device 100 of the embodiment of the present invention, the current temperature and temperature rise rate of the battery assembly are obtained through the acquisition module 101, and the control module 102 controls the battery temperature adjustment device to perform heating and / or insulation actions according to the temperature and temperature rise rate, so as to flexibly control the battery assembly to perform different heating and / or insulation actions in different environments according to different temperature and temperature rise rate conditions, thereby improving the adaptability of the heating and / or insulation of the battery assembly to the environment, ensuring that the vehicle energy consumption is reduced by performing corresponding heating and / or insulation actions in a better environment, and flexibly using different heating and / or insulation methods in a low-temperature and harsh environment to make the battery charging time reach the target charging time, thereby improving the user's car experience.

[0148] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0149] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A control method for a battery temperature regulating device, characterized in that: include: Get the current temperature and temperature rise rate of the battery component; The battery temperature regulating device is controlled to perform a heating action and / or a heat preservation action according to the temperature and the temperature rise rate.

2. The control method of the battery temperature regulating device according to claim 1, characterized in that: Get the current temperature and temperature rise rate of the battery component, including: Obtaining the total charging time of the battery assembly at the charging ambient temperature; Determine a target charging time according to the total charging time, wherein the target charging time includes a low temperature target charging time and a normal temperature target charging time; The temperature of the battery assembly at the current moment and the temperature rise rate under the target charging time are obtained.

3. The control method of the battery temperature regulating device according to claim 1 or 2, characterized in that: Controlling the battery temperature regulating device to perform a heating action and / or a heat preservation action according to the temperature and the temperature rise rate includes: When the battery assembly is in a low-temperature charging mode and the temperature is greater than a first preset temperature threshold and the temperature rise rate is greater than a first preset temperature rise rate threshold, it is determined that the battery assembly is in a low-temperature charging priority control mode; In the low-temperature charging priority control mode, the heating device in the battery temperature regulating device is controlled to heat the battery assembly according to the initial heating strategy.

4. The control method of the battery temperature regulating device according to claim 1 or 2, characterized in that: Controlling the battery temperature regulating device to perform a heating action and / or a heat preservation action according to the temperature and the temperature rise rate includes: When the battery assembly is in a low-temperature charging mode and the temperature is greater than a first preset temperature threshold and the temperature rise rate is less than or equal to a first preset temperature rise rate threshold, it is determined that the battery assembly is in a low-temperature charging look-ahead control mode; In the low-temperature charging look-ahead control mode, the heating device in the battery temperature regulating device is controlled to heat the battery assembly using a first frequency AC and a first rate AC self-heating and / or an initial heating strategy.

5. The control method of the battery temperature regulating device according to claim 1 or 2, characterized in that: Controlling the battery temperature regulating device to perform a heating action and / or a heat preservation action according to the temperature and the temperature rise rate includes: When the battery assembly is in a low-temperature charging mode and the temperature is less than or equal to a first preset temperature threshold and the temperature rise rate is greater than a first preset temperature rise rate threshold, it is determined that the battery assembly is in a low-temperature charging acceleration control mode; In the low-temperature charging acceleration control mode, the heating device in the battery temperature regulating device is controlled to heat the battery assembly with a second frequency AC and a second rate AC self-heating and / or an initial heating strategy, the first frequency is greater than the second frequency, and the first rate is less than the second rate.

6. The control method of the battery temperature regulating device according to claim 1 or 2, characterized in that: Controlling the battery temperature regulating device to perform a heating action and / or a heat preservation action according to the temperature and the temperature rise rate includes: When the battery assembly is in a low-temperature charging mode and the temperature is less than or equal to a first preset temperature threshold and the temperature rise rate is less than or equal to a first preset temperature rise rate threshold, it is determined that the battery assembly is in a low-temperature charging catch-up control mode; In the low-temperature charging catch-up control mode, the heating device in the battery temperature regulating device is controlled to heat the battery assembly with a third frequency AC and a third rate AC self-heating and / or an initial heating strategy, the third frequency is less than the second frequency, and the third rate is greater than the second rate.

7. The control method of the battery temperature regulating device according to claim 1, characterized in that: After controlling the battery temperature regulating device to perform a heating action and / or a heat preservation action according to the temperature and the temperature rise rate, the method further includes: Get the duration of the battery assembly being in the low temperature charging catch-up control mode at the set time; When the ratio of the duration to the total duration of low-temperature charging is greater than a preset ratio, the heating device in the battery temperature regulating device is controlled to heat the battery assembly by self-heating at a constant temperature rise rate and / or an initial heating strategy.

8. The control method of the battery temperature regulating device according to claim 1 or 2, characterized in that: Controlling the battery temperature regulating device to perform a heating action and / or a heat preservation action according to the temperature and the temperature rise rate includes: When the battery assembly is in the normal temperature charging mode and the temperature is greater than the second preset temperature threshold and the temperature rise rate is greater than the second preset temperature rise rate threshold, it is determined that the battery assembly is in the normal temperature charging priority control mode; In the normal temperature charging priority control mode, the heat preservation device in the battery temperature regulating device is controlled to maintain initial operation.

9. The control method of the battery temperature regulating device according to claim 1 or 2, characterized in that: Controlling the battery temperature regulating device to perform a heating action and / or a heat preservation action according to the temperature and the temperature rise rate includes: When the battery assembly is in the normal temperature charging mode and the temperature is greater than the second preset temperature threshold and the temperature rise rate is less than or equal to the second preset temperature rise rate threshold, it is determined that the battery assembly is in the normal temperature charging look-ahead control mode; In the normal temperature charging look-ahead control mode, the heat preservation material of the heat preservation device in the battery temperature regulating device is controlled to be turned on.

10. The control method of the battery temperature regulating device according to claim 1 or 2, characterized in that: Controlling the battery temperature regulating device to perform a heating action and / or a heat preservation action according to the temperature and the temperature rise rate includes: When the battery assembly is in the normal temperature charging mode and the temperature is less than or equal to the second preset temperature threshold and the temperature rise rate is greater than the second preset temperature rise rate threshold, it is determined that the battery assembly is in the normal temperature charging acceleration control mode; In the normal temperature charging acceleration control mode, the heat preservation device in the battery temperature regulating device is controlled to cover the bottom of the battery assembly.

11. The control method of the battery temperature regulating device according to claim 1 or 2, characterized in that: Controlling the battery temperature regulating device to perform a heating action and / or a heat preservation action according to the temperature and the temperature rise rate includes: When the battery assembly is in the normal temperature charging mode and the temperature is less than or equal to the second preset temperature threshold and the temperature rise rate is less than or equal to the second preset temperature rise rate threshold, it is determined that the battery assembly is in the normal temperature charging catch-up control mode; In the normal temperature charging catch-up control mode, the insulation material of the insulation device of the battery is controlled to open and the insulation device covers the bottom of the battery assembly.

12. The control method of the battery temperature regulating device according to any one of claims 8 to 11, characterized in that: The battery temperature regulating device further includes a wind shielding device, and when it is determined that the battery assembly is in a normal temperature charging mode, further includes: Obtaining the wind speed at the bottom of the battery assembly; When the wind speed is higher than a preset wind speed, the wind shielding device is controlled to open.

13. The control method of the battery temperature regulating device according to claim 1, characterized in that: Before controlling the battery temperature regulating device to perform a heating action and / or a heat preservation action according to the temperature and the temperature rise rate, the method further includes: When the temperature is less than or equal to the charging temperature threshold, determining that the battery assembly is in a low temperature charging mode; When the temperature is greater than the charging temperature threshold, it is determined that the battery assembly is in normal temperature charging mode.

14. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a control program for a battery temperature regulating device. When the control program for the battery temperature regulating device is executed by a processor, a device installed with the control program for the battery temperature regulating device implements the control method for the battery temperature regulating device as described in any one of claims 1 to 13.

15. A computer program product, characterized in that The computer program product comprises a computer program, and when the computer program is executed by a processor, the control method of the battery temperature regulating device according to any one of claims 1 to 13 is implemented.

16. An electronic device, characterized in that: include: An acquisition module is used to obtain the current temperature and temperature rise rate of the battery component; A control module is used to control the battery temperature adjustment device to perform a heating action and / or a heat preservation action according to the temperature and the temperature rise rate.

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