Power battery heating method and device, vehicle terminal and storage medium

Abstract

The invention relates to the technical field of battery heating, and discloses a power battery heating method and device, a vehicle terminal and a storage medium. According to the method, to-be-heated batteries are obtained, the to-be-heated batteries are at least a part of power batteries in a target vehicle, and if the number of the to-be-heated batteries is larger than or equal to a preset number threshold value, the to-be-heated batteries are heated; if the target vehicle is in a running state and the target vehicle is in a running state, at least part of driving batteries are determined from the batteries to be heated according to a preset battery priority, the number threshold is determined based on the number of the power batteries, the batteries to be heated except the driving batteries are heated, and the target vehicle is driven to run through the driving batteries; the power battery heating method which is more practical and has more application scenes is provided, and the problem that power battery heating can only be limited in the use scene when the vehicle stops is solved.

Description

Technical Field

[0001] The present application relates to the field of battery heating technology, and in particular to a power battery heating method, device, vehicle terminal and storage medium. Background Art

[0002] In the field of new energy vehicles, with the rapid development of electric vehicle technology, its environmental protection, economy and technological maturity are increasing, and it has become an important direction for the transformation and upgrading of the global automotive industry. However, the operating performance of electric vehicles under extreme environmental conditions, especially in low temperature environments, is still a major technical bottleneck restricting its widespread application. In low temperature environments, the performance of power batteries, as the "heart" of electric vehicles, is significantly affected. Due to the increase in electrolyte viscosity, the slowdown in lithium ion diffusion rate and the increase in battery internal resistance, the activity of power batteries is significantly reduced, which directly leads to slower charging speed, shorter cruising range and lower discharge power of electric vehicles, which seriously affects the user experience and the overall performance of the vehicle.

[0003] In order to solve this problem, the industry has continuously explored and developed a series of power battery heating technologies to improve the adaptability and reliability of electric vehicles in low temperature environments. Among them, battery self-heating technology stands out with its unique advantages. This technology cleverly utilizes the energy conversion and transfer mechanism between the power battery and the drive motor and other systems inside the electric vehicle, and generates pulsed alternating currents inside the power battery through a specific control strategy. When these alternating currents pass through the battery, they use its internal resistance to generate heat, thereby achieving autonomous heating inside the power battery. However, the battery self-heating method can usually only be used when the drive motor is not started, and cannot meet the power battery heating needs during driving, and the usage scenarios are limited.

[0004] It should be noted that the above content only provides background technical information related to the present application and does not necessarily constitute prior art. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present application provides a power battery heating method, device, vehicle terminal and storage medium to meet the power battery heating needs when the vehicle is in driving state.

[0006] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0007] According to one aspect of an embodiment of the present application, a power battery heating method is provided, comprising: obtaining batteries to be heated, wherein the batteries to be heated are at least a part of the power batteries in a target vehicle; if the number of the batteries to be heated is greater than or equal to a preset number threshold, and the target vehicle is in a driving state, determining at least a part of the drive batteries from the batteries to be heated according to a preset battery priority, wherein the number threshold is determined based on the battery number of the power batteries; heating the batteries to be heated except the drive batteries, and driving the target vehicle to drive through the drive batteries.

[0008] In one embodiment of the present application, based on the aforementioned scheme, obtaining a battery to be heated includes: obtaining the battery temperature of each power battery in the target vehicle; comparing the battery temperature with a preset heating temperature threshold, and determining the battery to be heated from each power battery according to the comparison result.

[0009] In one embodiment of the present application, based on the aforementioned scheme, the quantity threshold is obtained by any one of the following methods: the number of batteries of the power battery is used as the quantity threshold; the number of batteries of the drive battery is calculated according to the required power of the target vehicle, and the quantity threshold is obtained based on the number of batteries of the power battery and the number of batteries of the drive battery, wherein the quantity threshold is negatively correlated with the required power.

[0010] In one embodiment of the present application, based on the aforementioned scheme, at least a portion of the driving batteries are determined from the batteries to be heated according to a preset battery priority, including: determining the battery priority according to preset battery parameters, the preset battery parameters including at least one of battery temperature, battery state of charge and battery health status, wherein the battery temperature, the battery state of charge and the battery health status are all negatively correlated with the battery priority; and determining at least one battery to be heated with the lowest battery priority as the driving battery.

[0011] In one embodiment of the present application, based on the aforementioned scheme, batteries to be heated other than the driving battery are heated, including: if there are multiple batteries to be heated other than the driving battery, then according to the battery priority, the battery to be heated with the highest battery priority is determined as the target battery; in response to the target battery, the target battery is pulse heated, and if the battery temperature and / or heating time corresponding to the target battery meets the preset heating threshold, the battery to be heated with the highest current battery priority is determined as the new target battery.

[0012] In one embodiment of the present application, based on the aforementioned scheme, the method further includes: if the target vehicle is in a driving state and the number of the batteries to be heated is less than the number threshold, then determining the drive battery from the power batteries other than the batteries to be heated according to the battery priority.

[0013] In one embodiment of the present application, based on the above-mentioned solution, the method further includes: if the target vehicle is in a stopped state, heating the battery to be heated.

[0014] According to one aspect of an embodiment of the present application, a power battery heating device is provided, comprising: an acquisition module, used to acquire batteries to be heated, wherein the batteries to be heated are at least a part of the power batteries in a target vehicle; a determination module, used to determine at least a part of the drive batteries from the batteries to be heated according to a preset battery priority if the number of the batteries to be heated is greater than or equal to a preset number threshold and the target vehicle is in a driving state, wherein the number threshold is determined based on the number of batteries of the power batteries; a heating module, used to heat the batteries to be heated except the drive batteries, and drive the target vehicle to drive through the drive batteries.

[0015] According to one aspect of an embodiment of the present application, a vehicle terminal is provided, comprising: one or more processors; a storage device for storing one or more programs, wherein when the one or more programs are executed by the one or more processors, the vehicle terminal implements a power battery heating method as described in any one of the above embodiments.

[0016] The present application also provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor of a computer, the computer is enabled to execute the power battery heating method as described in any one of the above embodiments.

[0017] Beneficial effects of the present application: The present application obtains batteries to be heated, wherein the batteries to be heated are at least a part of the power batteries in a target vehicle. If the number of batteries to be heated is greater than or equal to a preset number threshold, and the target vehicle is in a driving state, at least a part of the drive batteries are determined from the batteries to be heated according to a preset battery priority, wherein the number threshold is determined based on the number of batteries of the power battery, and the batteries to be heated except the drive batteries are heated, and the target vehicle is driven by the drive batteries, thereby improving the heating efficiency of the power batteries, and ensuring the performance of the vehicle in a low temperature environment by heating the power batteries, solving the problem that the power battery heating can only be used in scenarios when the vehicle is stopped, and providing a power battery heating method for more application scenarios.

[0018] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0020] Figure 1 is a schematic diagram of an exemplary system architecture shown in an exemplary embodiment of the present application;

[0021] Figure 2 is a schematic flow chart of a power battery heating method shown in an exemplary embodiment of the present application;

[0022] Figure 3 is a schematic diagram of a power battery heating system shown in an exemplary embodiment of the present application;

[0023] Figure 4 is a circuit diagram of a power battery heating system shown in an exemplary embodiment of the present application;

[0024] Figure 5 is a circuit diagram of a power battery heating system shown in another exemplary embodiment of the present application;

[0025] Figure 6 is a block diagram of a power battery heating device shown in an exemplary embodiment of the present application;

[0026] Figure 7 A schematic diagram of the structure of a computer system suitable for implementing an electronic device of an embodiment of the present application is shown. DETAILED DESCRIPTION

[0027] The following will describe the implementation methods of the present application with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be understood that the preferred embodiments are only for illustrating the present application, not for limiting the scope of protection of the present application.

[0028] It should be noted that the illustrations provided in the following embodiments are only used to illustrate the basic concept of the present application in a schematic manner, and therefore the illustrations only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0029] In the following description, a large number of details are discussed to provide a more thorough explanation of the embodiments of the present application. However, it is obvious to those skilled in the art that the embodiments of the present application can be implemented without these specific details. In other embodiments, well-known structures and devices are shown in the form of block diagrams rather than in detail to avoid making the embodiments of the present application difficult to understand.

[0030] First of all, it should be noted that the principle of battery self-heating is mainly to generate heat through chemical reactions inside the battery or external energy to increase the battery temperature. In low temperature environments, the battery self-heating function is of great significance for ensuring battery performance, improving charging efficiency and extending service life.

[0031] Figure 1 It is a schematic diagram of an exemplary system architecture shown in an exemplary embodiment of the present application.

[0032] Reference Figure 1 As shown, the system architecture may include a data acquisition device 101 and a computer device 102. Among them, the computer device 102 may be at least one of a desktop graphics processing unit (GPU) computer, a GPU computing cluster, a neural network computer, etc. The data acquisition device 101 is used to collect the battery temperature of each power battery. In this embodiment, the data acquisition device 101 obtains the above data and provides it to the computer device 102 for processing. Relevant technicians can use the computer device 102 to compare the battery temperature of each power battery with the preset heating temperature threshold, and determine the power battery corresponding to the battery temperature less than the heating temperature threshold as the battery to be heated; if the number of batteries to be heated is greater than or equal to the preset number threshold, and the target vehicle is in a driving state, then at least a part of the driving battery is determined from the batteries to be heated according to the preset battery priority, wherein the number threshold is determined based on the number of batteries of the power battery; the batteries to be heated other than the driving battery are heated, and the target vehicle is driven by the driving battery. It should be noted that the data acquisition device 101 and the computer device 102 provided in this embodiment are only an example, and should not bring any restrictions on the functions and scope of use of the embodiments of the present application.

[0033] It should be noted that the power battery heating method provided in the embodiment of the present application is generally executed by the computer device 102 , and accordingly, the power battery heating device is generally disposed in the computer device 102 .

[0034] Figure 2 is a flow chart of a power battery heating method according to an exemplary embodiment of the present application. The power battery heating method may be executed by a computing and processing device. The computing and processing device may be Figure 1 The computer device 102 shown in FIG. Figure 2 As shown, the power battery heating method at least includes steps S210 to S230, which are described in detail as follows:

[0035] In step S210, a battery to be heated is obtained.

[0036] The battery to be heated is at least a part of the power battery in the target vehicle.

[0037] In one embodiment of the present application, the battery temperature of each power battery in the target vehicle is obtained; the battery temperature is compared with a preset heating temperature threshold, and the battery to be heated is determined from each power battery according to the comparison result.

[0038] In this embodiment, the battery temperature is compared with a preset heating temperature threshold, and the power battery corresponding to the battery temperature less than the heating temperature threshold is determined as the battery to be heated.

[0039] In step S220, if the number of batteries to be heated is greater than or equal to a preset number threshold and the target vehicle is in a driving state, at least a portion of the driving batteries are determined from the batteries to be heated according to a preset battery priority.

[0040] The quantity threshold is determined based on the number of cells in the power battery.

[0041] In one embodiment of the present application, the power battery other than the battery to be heated is determined as at least a part of the driving battery, and at least a part of the driving battery is determined from the battery to be heated according to the preset battery priority to meet the power demand of the target vehicle, and the target vehicle is driven by the driving battery. For example, the number of power batteries of the target vehicle is five, the number of batteries to be heated is three, and the number of driving batteries required is three, then two power batteries other than the battery to be heated are determined as driving batteries, and one driving battery is determined from the battery to be heated according to the preset battery priority, and the target vehicle is driven by the determined three driving batteries. For another example, the number of power batteries of the target vehicle is two, the number of batteries to be heated is two, and the number of driving batteries required is one, then one driving battery is determined from the battery to be heated according to the preset battery priority, and the target vehicle is driven by the determined one driving battery. It can be understood that the number of power batteries and other battery numbers in this embodiment are only for example, and can be modified according to actual needs. This application does not limit this, nor should it bring any restrictions on the functions and scope of use of the embodiments of this application.

[0042] In one embodiment of the present application, the quantity threshold is obtained by any one of the following methods: the number of cells of the power battery is used as the quantity threshold; the number of cells of the drive battery is calculated according to the required power of the target vehicle, and the quantity threshold is obtained based on the number of cells of the power battery and the number of cells of the drive battery, wherein the quantity threshold is negatively correlated with the required power.

[0043] In this embodiment, the number of power batteries is used as the quantity threshold, wherein the number of power batteries is greater than or equal to two. For example, if the number of power batteries of the target vehicle is two, the quantity threshold is two, that is, if the number of batteries to be heated is greater than or equal to two, and the target vehicle is in a driving state, at least a portion of the driving batteries are determined from the batteries to be heated according to the preset battery priority. It should be noted that the number of power batteries of the target vehicle in this embodiment is two for illustrative purposes only and should not impose any limitations on the functions and scope of use of the embodiments of this application.

[0044] In this embodiment, the number of cells of the driving battery is determined according to the required power of the target vehicle and the current power of the power battery, wherein if the target vehicle is in a driving state, the number of cells of the driving battery is at least one; a number threshold is obtained by performing a difference calculation based on the number of cells of the power battery and the number of cells of the driving battery, wherein the number threshold is negatively correlated with the required power.

[0045] In one embodiment of the present application, the process of determining at least a portion of driving batteries from batteries to be heated according to preset battery priorities includes the following steps: determining the battery priority according to preset battery parameters, the preset battery parameters including at least one of battery temperature, battery state of charge and battery health status, wherein the battery temperature, battery state of charge and battery health status are all negatively correlated with the battery priority; determining at least one battery to be heated with the lowest battery priority as a driving battery.

[0046] In the present embodiment, determining the battery priority according to the preset battery parameters includes at least one of the following: determining the battery priority according to the battery temperature of the battery to be heated, wherein the battery temperature is negatively correlated with the battery priority, that is, the lower the battery temperature, the higher the corresponding battery priority; determining the battery priority according to the battery state of charge of the battery to be heated, wherein the battery state of charge (SOC) is negatively correlated with the battery priority, that is, the less the remaining power corresponding to the battery state of charge, the higher the corresponding battery priority; determining the battery priority according to the battery health state of the battery to be heated, wherein the battery health state (SOH) is negatively correlated with the battery priority, that is, the less the remaining power corresponding to the battery health state, the higher the corresponding battery priority; determining at least one battery to be heated with the lowest battery priority as a driving battery can not only better meet the driving requirements of the target vehicle, but also ensure that the battery outputs stable power during the driving process, reduce power fluctuations caused by low battery power, and thus provide a smoother driving or operating experience.

[0047] In this embodiment, at least one battery to be heated with the lowest battery priority is determined as a driving battery. Specifically, the batteries to be heated are sorted according to the battery priority, the number of driving batteries is determined according to the required power of the target vehicle and the current power of the power battery, and the batteries to be heated corresponding to the number of at least one driving battery with the lowest battery priority are determined as driving batteries. It can be understood that if the number of driving batteries is determined to be N according to the required power of the target vehicle and the current power of the power battery, the N batteries to be heated with the lowest battery priority are determined as driving batteries, so that the target vehicle can be driven by the driving batteries.

[0048] In step S230 , the batteries to be heated except the driving battery are heated, and the target vehicle is driven by the driving battery.

[0049] In one embodiment of the present application, if there are multiple batteries to be heated other than the driving battery, the battery to be heated with the highest battery priority is determined as the target battery according to the battery priority; in response to the target battery, the target battery is pulse heated, and if the battery temperature and / or heating time corresponding to the target battery meets the preset heating threshold, the battery to be heated with the highest current battery priority is determined as the new target battery.

[0050] In this embodiment, the preset heating threshold includes a target temperature threshold and a target duration threshold. If the battery temperature corresponding to the target battery is greater than or equal to the target temperature threshold, and / or the heating duration corresponding to the target battery is greater than or equal to the target duration threshold, the pulse heating of the target battery is stopped, and the battery to be heated with the highest current battery priority is determined as a new target battery to perform pulse heating on the new target battery. The target temperature threshold is greater than the heating temperature threshold.

[0051] In this embodiment, if the number of batteries to be heated is one, pulse heating is directly performed on the battery to be heated, and the target vehicle is driven by the driving battery.

[0052] In one embodiment of the present application, if the target vehicle is in a driving state and the number of batteries to be heated is less than a quantity threshold, the driving battery is determined from the power batteries other than the batteries to be heated according to the battery priority, the battery to be heated is heated, and the target vehicle is driven by the driving battery, wherein the batteries other than the batteries to be heated are power batteries whose battery temperature is greater than or equal to the heating temperature threshold.

[0053] In this embodiment, the driving battery is determined from the normal batteries according to the battery priority, wherein the normal battery is a battery other than the battery to be heated, that is, a power battery whose battery temperature is greater than or equal to the heating temperature threshold, and at least one normal battery with the lowest battery priority can be determined as the driving battery. Specifically, the normal batteries can be sorted according to the battery priority, the number of driving batteries can be determined according to the required power of the target vehicle and the current power of the power battery, and the normal batteries corresponding to the number of driving batteries with the lowest battery priority can be determined as the driving batteries. It can be understood that if the number of driving batteries is determined to be N according to the required power of the target vehicle and the current power of the power battery, the N normal batteries with the lowest battery priority can be determined as the driving batteries, so that the target vehicle can be driven by the driving batteries.

[0054] In one embodiment of the present application, if the target vehicle is in a stopped state, the battery to be heated is heated.

[0055] In this embodiment, the power battery heating method may also include at least one of the following: if the target vehicle is in a stopped state, at least one battery to be heated is heated at the same time; if the target vehicle is in a stopped state, any battery to be heated is determined as a target heating battery, and at least one other heating battery is heated during the heating of the target heating battery, wherein the other heating battery is a battery other than the target heating battery among the batteries to be heated. By heating at least one battery to be heated at the same time or heating other batteries to be heated during the heating of one battery to be heated, the total heating time of the power battery can be reduced and the heating efficiency of the power battery can be improved.

[0056] The present application also provides a power battery heating system, taking the number of power batteries as two examples, referring to Figure 3 As shown, Figure 3 : is a schematic diagram of a power battery heating system shown in an exemplary embodiment of the present application. In an exemplary embodiment, the power battery heating system includes: a first heating system 100 and a second heating system 200, wherein the first heating system 100 includes a first battery 110 and a first electric drive system 120, and the first electric drive system 120 includes a first electric control 121 and a first motor 122; the second heating system 200 includes a second battery 210 and a second electric drive system 220, and the second electric drive system 220 includes a second electric control 221 and a second motor 222; the first battery 110 and the second battery 210 are connected in parallel. When the target vehicle needs to be heated during driving, the switches S1 and S2 are disconnected, and the heating order of the first battery 110 and the second battery 210 is determined, and the heating is performed in sequence according to the heating order. If the first battery 110 is heated preferentially, the first battery 110 is heated by charging and discharging with the first electric drive system 120, and the vehicle is driven by the second battery 210 and the second electric drive system 220; after a preset first battery heating exit threshold is reached, the second battery 210 is heated by charging and discharging with the second electric drive system 220, and the vehicle is driven by the first battery 110 and the first electric drive system 120; after a preset second battery heating exit threshold is reached, switches S1 and S2 are closed, and the target vehicle is driven by the first battery 110 and the second battery 210 together.

[0057] In this embodiment, reference Figure 3As shown, the first battery 110 is connected to the first drive system 120, so that the first battery 110 is heated by charging and discharging between the first battery 110 and the first electric drive system 120, and the first electric control 121 in the first drive system 120 is connected to the first motor 122, so that when the first battery 110 is discharged, the first electric control 121 is controlled to make the first battery 110 charge the inductance in the first motor 122, and when the first battery 110 is charged, the first electric control 121 is controlled to make the inductance in the first motor 122 charge the first battery 110. Through the alternating cycle of the first battery charging and the first battery discharging process, the first battery 110 and the first electric drive system 120 are charged and discharged, and the battery is heated by using the internal resistance of the first battery 110. The second battery 210 is connected to the second drive system 220 so as to heat the second battery 210 by charging and discharging between the second battery 210 and the second electric drive system 220. The second electric control 221 in the second drive system 220 is connected to the second motor 222 so as to control the second electric control 221 to make the second battery 210 charge the inductance in the second motor 222 when the second battery 210 is discharged, and to control the second electric control 221 to make the inductance in the second motor 222 charge the second battery 210 when the second battery 210 is charged. Through the alternating cycle of the second battery charging and the second battery discharging process, the second battery 210 and the second electric drive system 220 are charged and discharged, and the internal resistance of the second battery 210 is used to heat the battery.

[0058] In one embodiment of the present application, still taking the number of power batteries as two as an example, the process of the power battery heating method is described with reference as follows: If it is determined that the temperature of any battery of the power battery (including the first battery and the second battery) is less than the preset heating temperature threshold, it is determined to turn on the power battery heating. Determine whether the target vehicle is in a driving state (that is, whether the drive motor is started). If the vehicle is in a stationary state, the pulse heating of the first battery and the second battery is turned on at the same time. If the vehicle is in a driving state, the heating sequence is judged and processed according to the following steps: If the first battery is less than the heating temperature threshold and the second battery is greater than or equal to the heating temperature threshold, the pulse heating process of the first battery is turned on, and the target vehicle is driven by the second battery; if the second battery is less than the heating temperature threshold, and the first battery is greater than or equal to the heating temperature threshold, the pulse heating process of the second battery is turned on, and the target vehicle is driven by the first battery; if both the first battery and the second battery are less than the heating temperature threshold, pulse heating is performed in sequence according to the preset battery priority, and the target vehicle is driven by the non-heating battery. The specific implementation method of the pulse heating of the power battery includes the following steps (described by taking the heating of the first battery as an example): State 1 is as follows Figure 4 As shown, Figure 4 is a circuit diagram of a power battery heating system shown in an exemplary embodiment of the present application, state 2 is as follows Figure 5 As shown, Figure 5It is a circuit diagram of a power battery heating system shown in another exemplary embodiment of the present application. State 1: The first battery is discharged, and the first electric control is controlled so that the first battery charges the inductor in the first motor; State 2: The first battery is charged, and the first electric control is controlled so that the inductor in the first motor charges the first battery; By alternating between state 1 and state 2, the first battery and the first electric drive system are charged and discharged, and the battery is heated by the internal resistance of the first battery. Until the preset heating exit temperature of the first battery, that is, the normal temperature threshold or the heating exit time (the heating exit time is calculated according to the heating start time and the heating duration threshold), the pulse heating of the first battery is turned off. It is judged whether the battery temperature of the second battery is less than the heating temperature threshold at this time. If the battery temperature of the second battery is less than the heating temperature threshold, it is switched to the second battery to enter the pulse heating process. If the battery temperature of the second battery is greater than or equal to the heating temperature threshold, the pulse heating is exited, and switches S1 and S2 are closed to connect the first battery and the second battery so that the first battery and the second battery can drive the target vehicle together. It is understandable that by utilizing the inductance characteristics of the motor stator, when current passes through the motor stator, the IGBT (Insulate-Gate Bipolar Transistor) is turned off, so that the freewheeling circuit can realize current feedback. The IGBT will work in 1 cycle of PWM (Pulse Width Modulation) mode and 1 cycle of off-tube state, thereby forming a pulse current waveform at the high-voltage input end of the motor controller. When the power battery switches from the discharge state to the charging state, the inductor will generate an induced electromotive force due to the change in current. The voltage of this induced electromotive force will be higher than the positive voltage of the bus, so that the energy in the inductor is recharged to the power battery. Due to the existence of the induced electromotive force, the direction of the stator winding current in state 2 remains unchanged compared to state 1.

[0059] refer to Figure 4 and Figure 5 As shown, taking the heating of the first battery as an example, the first electronic control 121 includes a three-phase inverter bridge, which is composed of six switching elements (such as IGBTs). These switching elements are switched according to a certain timing to generate a three-phase AC output. The first electronic control 121 converts the high-voltage DC bus voltage output by the first battery 110 into three-phase AC power, and outputs it to the first motor 122 to drive the first motor 122 to rotate. Each phase arm of the three-phase inverter bridge includes an upper bridge arm switch tube connected to the positive pole of the first battery 110 and a lower bridge arm switch tube connected to the negative pole of the first battery 110. The first battery 110 and the second battery 210 are connected in parallel through switches S1 and S2. The second heating system is connected in the same way as the first heating system, refer to Figure 4 and Figure 5 As shown, no further details are given here.

[0060] The present application obtains batteries to be heated, wherein the batteries to be heated are at least a part of the power batteries in the target vehicle. If the number of batteries to be heated is greater than or equal to a preset number threshold, and the target vehicle is in a driving state, at least a part of the drive batteries are determined from the batteries to be heated according to a preset battery priority, wherein the number threshold is determined based on the number of batteries of the power battery, and the batteries to be heated except the drive batteries are heated, and the target vehicle is driven by the drive batteries, so that when the vehicle is in a driving state, the power battery can be quickly heated by battery pulse self-heating, thereby improving the performance of new energy vehicles in low temperature environments, being able to meet the power battery pulse heating needs of new energy vehicles in driving and parking scenarios, and increasing the use scenarios of power battery heating.

[0061] Figure 6 is a block diagram of a power battery heating device shown in an exemplary embodiment of the present application. The device can be applied to Figure 1 The implementation environment shown in the figure is specifically configured in the computer device 102. The device can also be applied to other exemplary implementation environments and specifically configured in other devices. This embodiment does not limit the implementation environment to which the device is applied.

[0062] like Figure 6 As shown, the exemplary power battery heating device includes: an acquisition module 610 , a determination module 620 and a heating module 630 .

[0063] Among them, the acquisition module 610 is used to acquire the batteries to be heated, wherein the batteries to be heated are at least a part of the power batteries in the target vehicle; the determination module 620 is used to determine at least a part of the driving batteries from the batteries to be heated according to a preset battery priority if the number of batteries to be heated is greater than or equal to a preset number threshold and the target vehicle is in a driving state, wherein the number threshold is determined based on the number of batteries of the power batteries; the heating module 630 is used to heat the batteries to be heated except the driving batteries, and drive the target vehicle to drive through the driving batteries.

[0064] It should be noted that the power battery heating device provided in the above embodiment and the power battery heating method provided in the above embodiment belong to the same concept, wherein the specific manner in which each module and unit performs the operation has been described in detail in the method embodiment, and will not be repeated here. In practical applications, the power battery heating device provided in the above embodiment can allocate the above functions to different functional modules as needed, that is, divide the internal structure of the device into different functional modules to complete all or part of the functions described above, and this is not limited here.

[0065] The embodiment of the present application also provides an electronic device, including: one or more processors; a storage device for storing one or more programs, when the one or more programs are executed by the one or more processors, the electronic device implements the power battery heating method provided in the above embodiments. In this embodiment, the electronic device includes a vehicle terminal.

[0066] Figure 7 The structure diagram of the computer system suitable for implementing the electronic device of the embodiment of the present application is shown. It should be noted that: Figure 7 The computer system 700 of the electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0067] like Figure 7 As shown, the computer system 700 includes a central processing unit (CPU) 701, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 702 or the program loaded from the storage part 708 to the random access memory (RAM) 703, such as executing the methods provided in the above-mentioned various embodiments. In the RAM 703, various programs and data required for system operation are also stored. The CPU 701, the ROM 702 and the RAM 703 are connected to each other through the bus 704. The input / output (I / O) interface 705 is also connected to the bus 704.

[0068] The following components are connected to the I / O interface 705: an input section 706 including a keyboard, a mouse, etc.; an output section 707 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 708 including a hard disk, etc.; and a communication section 709 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 709 performs communication processing via a network such as the Internet. A drive 710 is also connected to the I / O interface 705 as needed. A removable medium 711, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 710 as needed so that a computer program read therefrom is installed into the storage section 708 as needed.

[0069] In particular, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication section 709, and / or installed from a removable medium 711. When the computer program is executed by a central processing unit (CPU) 701, various functions defined in the system of the present application are executed.

[0070] It should be noted that the computer-readable medium shown in the embodiment of the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media can include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, wherein a computer-readable computer program is carried. This propagated data signal can take a variety of forms, including but not limited to an electromagnetic signal, an optical signal, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate or transmit a program for use by or in conjunction with an instruction execution system, apparatus or device. A computer program contained on a computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0071] The flowchart and block diagram in the accompanying drawings illustrate the possible architecture, functions and operations of the system, method and computer program product according to various embodiments of the present application. Wherein, each box in the flowchart or block diagram can represent a module, a program segment, or a part of the code, and the above-mentioned module, program segment, or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, and the combination of boxes in the block diagram or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0072] The units involved in the embodiments described in this application may be implemented by software or hardware, and the units described may also be set in a processor. The names of these units do not, in some cases, constitute limitations on the units themselves.

[0073] Another aspect of the present application further provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor of a computer, the computer executes the power battery heating method provided in the above embodiments. The computer-readable storage medium may be included in the electronic device described in the above embodiments, or may exist independently without being assembled into the electronic device.

[0074] It should be noted that, although several modules or units of the equipment for action execution are mentioned in the above detailed description, this division is not mandatory. In fact, according to the embodiments of the present application, the features and functions of two or more modules or units described above can be embodied in one module or unit. On the contrary, the features and functions of one module or unit described above can be further divided into being embodied by multiple modules or units.

[0075] Another aspect of the present application also provides a computer program product or a computer program, which includes a computer instruction stored in a computer-readable storage medium. A processor of a computer device reads the computer instruction from the computer-readable storage medium, and the processor executes the computer instruction, so that the computer device executes the power battery heating method provided in each of the above embodiments.

[0076] Through the description of the above implementation methods, it is easy for those skilled in the art to understand that the example implementation methods described here can be implemented by software or by combining software with necessary hardware. Therefore, the technical solution according to the implementation methods of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which can be a personal computer, a server, a touch terminal, or a network device, etc.) to execute the method according to the implementation methods of the present application.

[0077] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the embodiments disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary technical means in the art that are not disclosed in the present application.

[0078] The above embodiments are merely illustrative of the principles and effects of the present application, and are not intended to limit the present application. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed in the present application shall still be covered by the claims of the present application.

Claims

1. A power battery heating method, characterized in that: include: Acquire a battery to be heated, wherein the battery to be heated is at least a part of a power battery in a target vehicle; If the number of the batteries to be heated is greater than or equal to a preset number threshold and the target vehicle is in a driving state, determining at least a portion of the driving batteries from the batteries to be heated according to a preset battery priority, wherein the number threshold is determined based on the number of batteries of the power batteries; A battery to be heated other than the driving battery is heated, and the target vehicle is driven by the driving battery.

2. The power battery heating method according to claim 1, characterized in that: Get the battery ready for heating, including: Obtain the battery temperature of each power battery in the target vehicle; The battery temperature is compared with a preset heating temperature threshold, and the battery to be heated is determined from each of the power batteries according to the comparison result.

3. The power battery heating method according to claim 1, characterized in that: Use any of the following methods to obtain the quantity threshold: Taking the number of cells of the power battery as the number threshold; The battery quantity of the driving battery is calculated according to the required power of the target vehicle, and the quantity threshold is obtained based on the battery quantity of the power battery and the battery quantity of the driving battery, wherein the quantity threshold is negatively correlated with the required power.

4. The power battery heating method according to claim 1, characterized in that: Determining at least a portion of driving batteries from the batteries to be heated according to a preset battery priority level includes: Determining a battery priority according to a preset battery parameter, wherein the preset battery parameter includes at least one of a battery temperature, a battery state of charge, and a battery health state, wherein the battery temperature, the battery state of charge, and the battery health state are all negatively correlated with the battery priority; At least one battery to be heated with the lowest battery priority is determined as the driving battery.

5. The power battery heating method according to claim 1, characterized in that: Heating a battery to be heated other than the driving battery comprises: If there are multiple batteries to be heated other than the driving battery, the battery to be heated with the highest battery priority is determined as the target battery according to the battery priority; In response to a target battery, pulse heating is performed on the target battery, and if the battery temperature and / or heating duration corresponding to the target battery meets a preset heating threshold, the battery to be heated with the highest current battery priority is determined as a new target battery.

6. The power battery heating method according to any one of claims 1 to 5, characterized in that: The method further comprises: If the target vehicle is in a driving state and the number of the batteries to be heated is less than the number threshold, a driving battery is determined from the power batteries other than the batteries to be heated according to the battery priority.

7. The power battery heating method according to any one of claims 1 to 5, characterized in that: The method further comprises: If the target vehicle is in a stopped state, the battery to be heated is heated.

8. A power battery heating device, characterized in that: include: An acquisition module, used for acquiring a battery to be heated, wherein the battery to be heated is at least a part of a power battery in a target vehicle; a determination module, configured to determine at least a portion of the driving batteries from the batteries to be heated according to a preset battery priority if the number of the batteries to be heated is greater than or equal to a preset number threshold and the target vehicle is in a driving state, wherein the number threshold is determined based on the number of batteries of the power battery; The heating module is used to heat the batteries to be heated except the driving battery, and drive the target vehicle to travel through the driving battery.

9. A vehicle terminal, characterized in that: The vehicle terminal comprises: one or more processors; A storage device for storing one or more programs, which, when executed by the one or more processors, enables the vehicle terminal to implement the power battery heating method as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and when the computer program is executed by a processor of a computer, the computer is caused to execute the power battery heating method according to any one of claims 1 to 7.

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