Temperature control method and device, electronic equipment and computer readable storage medium

Abstract

The application provides a temperature control method and device, electronic equipment and a computer readable storage medium, and the method comprises the following steps: in the process of charging the power battery in the vehicle by using the charging gun on the charging pile, the current temperature of the charging seat on the vehicle for connecting the charging gun is monitored in real time; it is judged whether the current temperature of the charging seat is located in the target temperature control interval set in advance; if the current temperature of the charging seat is located in the target temperature control interval, the charging limiting current after the current charging current of the power battery is limited is calculated in real time according to the current temperature, the maximum temperature value and the minimum temperature value in the target temperature control interval, and the allowed charging current for representing the charging capacity of the power battery; the charging limiting current is sent to the charging pile, so that the charging pile charges the power battery according to the charging limiting current. Through the method, the charging current of the power battery can be adjusted in real time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy electric vehicles, in particular to a temperature control method and device, an electronic device and a computer readable storage medium. BACKGROUND

[0002] Generally, when charging a new energy electric vehicle, a charging gun on a charging pile needs to be inserted into a charging seat of the new energy electric vehicle, so as to realize the transmission of electric energy. In the charging process, a connection resistance is generated in the process of connecting the electrode column in the charging gun with the charging seat, and the connection resistance generates heat. At present, the controller in the new energy electric vehicle monitors the temperature of the charging seat to prevent a fire caused by excessively high temperature.

[0003] However, the temperature control of the charging seat in the prior art is relatively simple, and a fixed temperature threshold is often set. Once the threshold is exceeded, the charging current is limited by a fixed proportion. If the temperature of the charging seat triggers a higher fault threshold after the limitation, the charging is completely stopped. This fixed proportion limitation of the charging current cannot adjust the charging current in real time according to the real-time temperature of the charging seat, and if the limitation of the charging current is too large, the charging time is likely to be prolonged, and if the limitation of the charging current is too small, the temperature control of the charging seat may not work, resulting in continuous temperature rise of the charging seat. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a temperature control method and device, an electronic device and a computer readable storage medium, so as to adjust the charging current of the power battery in real time according to the current temperature of the charging seat, thereby improving the sensitivity of the temperature control of the charging seat.

[0005] In a first aspect, an embodiment of the present application provides a temperature control method, comprising:

[0006] In the process of charging the power battery in the vehicle using the charging gun on the charging pile, the current temperature of the charging seat on the vehicle for connecting the charging gun is monitored in real time;

[0007] It is judged whether the current temperature of the charging seat is located in a target temperature control interval set in advance;

[0008] If the current temperature of the charging seat is located in the target temperature control interval, the charging limitation current after the current charging current of the power battery is limited is calculated in real time according to the current temperature, the maximum temperature value and the minimum temperature value in the target temperature control interval, and the allowed charging current for representing the charging capacity of the power battery; wherein the current temperature and the charging limitation current are in a negative correlation relationship;

[0009] The charging limiting current is sent to the charging pile, so that the charging pile charges the power battery according to the charging limiting current.

[0010] With reference to the first aspect, in a first possible implementation of the first aspect, the method further comprises:

[0011] If the current temperature of the charging seat is less than the minimum temperature value, the power battery is charged using the allowed charging current.

[0012] With reference to the first aspect, in a second possible implementation of the first aspect, the method further comprises:

[0013] If the current temperature of the charging seat is greater than the maximum temperature value, the power battery is charged using a preset multiple of the allowed charging current; the preset multiple is greater than 0 and less than 1.

[0014] With reference to the first aspect, in a third possible implementation of the first aspect, the method further comprises:

[0015] The charging limiting current is calculated by the following formula:

[0016]

[0017] wherein I is the charging limiting current, T2 is the maximum temperature value, T1 is the minimum temperature value, T is the current temperature, I0 is the allowed charging current, and α+β=1.

[0018] With reference to the first aspect, in a fourth possible implementation of the first aspect, the method further comprises:

[0019] When the connection resistance reaches thermal equilibrium, a current temperature difference between a current environment temperature in which the vehicle is located and a current resistance temperature of the connection resistance is calculated; the connection resistance is generated during connection of an electrode column in the charging gun and the charging seat.

[0020] determine a charging current range to which the charging limit current belongs from a pre-generated mapping relationship; wherein the mapping relationship records a mapping relationship between a charging current range and an allowed temperature difference range in a case that the charging seat and the charging gun are normally connected; a temperature difference in the allowed temperature difference range is a difference between an ambient temperature of the vehicle and a resistance temperature of the connection resistance when the connection resistance reaches thermal equilibrium;

[0021] query an allowed temperature difference range having a mapping relationship with the charging current range from the mapping relationship according to the queried charging current range;

[0022] determine whether the current temperature difference is within the queried allowed temperature difference range;

[0023] if the current temperature difference is within the queried allowed temperature difference range, it is represented that the connection between the charging gun and the charging seat is normal;

[0024] if the current temperature difference is greater than a maximum temperature difference in the queried allowed temperature difference range, it is represented that the connection between the charging gun and the charging seat is abnormal.

[0025] In a second aspect, the embodiments of the present application further provide a temperature control device, comprising:

[0026] a monitoring module, configured to monitor a current temperature of a charging seat on a vehicle for connecting a charging gun in real time in a process that the charging gun on a charging pile is used to charge a power battery in the vehicle;

[0027] a first determining module, configured to determine whether the current temperature of the charging seat is located in a pre-set target temperature control interval;

[0028] a first calculating module, configured to, if the current temperature of the charging seat is located in the target temperature control interval, calculate a charging limit current after a current charging current of the power battery is limited in real time according to the current temperature, a maximum temperature value and a minimum temperature value in the target temperature control interval, and an allowed charging current for representing a charging capacity of the power battery; wherein the current temperature and the charging limit current have a negative correlation relationship;

[0029] a first charging module, configured to send the charging limit current to the charging pile, so that the charging pile charges the power battery according to the charging limit current.

[0030] In combination with the second aspect, the embodiments of the present application provide a first possible implementation manner of the second aspect, wherein the device further comprises:

[0031] The second charging module is configured to charge the power battery using the allowed charging current if the current temperature of the charging base is less than the minimum temperature value.

[0032] With reference to the second aspect, in a second possible implementation of the second aspect, the apparatus further includes:

[0033] The third charging module is configured to charge the power battery using a preset multiple of the allowed charging current if the current temperature of the charging base is greater than the maximum temperature value, wherein the preset multiple is greater than 0 and less than 1.

[0034] With reference to the second aspect, in a third possible implementation of the second aspect, the first calculating module, when calculating the charging limit current after limiting the charging current of the power battery in real time according to the current temperature, the maximum temperature value and the minimum temperature value in the target temperature control interval, and the allowed charging current representing the charging capability of the power battery, is specifically configured to:

[0035] The charging limit current after limiting the charging current of the power battery in real time is calculated according to the following formula:

[0036]

[0037] wherein I is the charging limit current, T2 is the maximum temperature value, T1 is the minimum temperature value, T is the current temperature, I0 is the allowed charging current, and α+β=1.

[0038] With reference to the second aspect, in a fourth possible implementation of the second aspect, the apparatus further includes:

[0039] The second calculating module is configured to calculate a current temperature difference between a current ambient temperature of the vehicle and a current resistance temperature of the connection resistance when the connection resistance reaches thermal equilibrium, wherein the connection resistance is generated during connection of an electrode column in the charging gun and the charging base.

[0040] The determining module is configured to determine, from a pre-generated mapping relationship, a charging current range to which the charging limit current belongs, wherein the mapping relationship records a mapping relationship between a charging current range and an allowed temperature difference range in a case of normal connection of the charging base and the charging gun, and a temperature difference in the allowed temperature difference range is a difference between an ambient temperature of a vehicle and a resistance temperature of a connection resistance when the connection resistance reaches thermal equilibrium.

[0041] The query module is configured to query, according to the queried charging current range, a range of allowable temperature difference values having a mapping relationship with the charging current range from the mapping relationship;

[0042] The second determination module is configured to determine whether the current temperature difference is within the queried range of allowable temperature difference values.

[0043] The first connection module is configured to represent that the connection between the charging gun and the charging seat is normal if the current temperature difference is within the queried range of allowable temperature difference values.

[0044] The second connection module is configured to represent that the connection between the charging gun and the charging seat is abnormal if the current temperature difference is greater than the maximum temperature difference in the queried range of allowable temperature difference values.

[0045] In a third aspect, an electronic device is provided, including a processor, a memory and a bus, the memory stores machine readable instructions executable by the processor, when the electronic device is running, the processor and the memory communicate through the bus, and the machine readable instructions are executed by the processor to perform the steps in any possible implementation manner of the first aspect.

[0046] In a fourth aspect, a computer readable storage medium is provided, and the computer readable storage medium stores a computer program, and the computer program is executed by the processor to perform the steps in any possible implementation manner of the first aspect.

[0047] The temperature control method and device, the electronic device and the computer readable storage medium provided in the embodiments of the present application, in the process of charging the power battery in the vehicle by using the charging gun on the charging pile, the current temperature of the charging seat on the vehicle for connecting the charging gun is monitored in real time, it is judged whether the current temperature of the charging seat is located in the target temperature control interval set in advance, if the current temperature of the charging seat is located in the target temperature control interval, the charging limiting current after limiting the current charging current of the power battery is calculated in real time according to the current temperature, the maximum temperature value and the minimum temperature value in the target temperature control interval and the allowable charging current for representing the charging capacity of the power battery, wherein the current temperature and the charging limiting current have a negative correlation relationship, and the charging limiting current is sent to the charging pile, so that the charging pile charges the power battery according to the charging limiting current. In the embodiments, the charging limiting current after limiting the current charging current of the power battery can be calculated in real time according to the current temperature of the charging seat, so as to realize real-time adjustment of the charging current of the power battery, and then reduce the temperature of the charging seat, which is conducive to improving the sensitivity of the temperature control of the charging seat, so as to achieve more fine optimal control of the temperature of the charging seat.

[0048] In order to make the above objectives, characteristics and advantages of the present application more obvious and easy to understand, the following preferred embodiments are specifically described below, and the accompanying drawings are referred to as follows. BRIEF DESCRIPTION OF DRAWINGS

[0049] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0050] Figure 1 A flow chart of a temperature control method provided by an embodiment of the present application is shown;

[0051] Figure 2 A connection relationship diagram of a charging base and a charging gun provided by an embodiment of the present application is shown;

[0052] Figure 3 A structural diagram of a temperature control device provided by an embodiment of the present application is shown;

[0053] Figure 4 A structural diagram of an electronic device provided by an embodiment of the present application is shown. DETAILED DESCRIPTION

[0054] In order to make the objectives, technical solutions and advantages of the embodiments of the present application more clear, the following will clearly and completely describe the technical solutions of the embodiments of the present application in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0055] In view of the problem that the step control method cannot balance the charging time and the temperature protection of the charging base, based on this, the embodiments of the present application provide a temperature control method, device, electronic device and computer readable storage medium, which are described below through embodiments.

[0056] In order to facilitate the understanding of the present embodiment, first, a temperature control method disclosed by the embodiments of the present application is described in detail. The method is applied to a battery management system in a vehicle, as shown in Figure 1 The method includes the following steps:

[0057] S101: In the process of charging the power battery in the vehicle using the charging gun on the charging pile, the current temperature of the charging seat on the vehicle for connecting the charging gun is monitored in real time.

[0058] In this embodiment, the vehicle refers to a new energy electric vehicle, and the power battery in the new energy electric vehicle is used to supply power to the whole vehicle to drive the vehicle to travel.

[0059] As shown in Figure 2 After the charging gun on the charging pile is inserted into the charging seat in the vehicle, the charging gun is used to charge the power battery in the vehicle, and the current temperature of the charging seat on the vehicle is monitored in real time during the charging process.

[0060] S102: Determine whether the current temperature of the charging seat is in the target temperature control interval.

[0061] For example, the target temperature control interval is [T2, T1], where T2 is greater than T1.

[0062] S103: If the current temperature of the charging seat is in the target temperature control interval, the charging limiting current after limiting the current charging current of the power battery is calculated in real time according to the current temperature, the maximum temperature value and the minimum temperature value in the target temperature control interval, and the allowed charging current for representing the charging capacity of the power battery; wherein the current temperature and the charging limiting current are negatively correlated.

[0063] In this embodiment, if the current temperature T of the charging seat is greater than T1 and less than T2, the charging limiting current after limiting the current charging current of the power battery is calculated by the following formula:

[0064]

[0065] Wherein, I is the charging limiting current; T2 is the maximum temperature value in the target temperature control interval; T1 is the minimum temperature value in the target temperature control interval; T is the current temperature of the charging seat; I0 is the allowed charging current; and a+β=1. Wherein, the allowed charging current refers to the maximum charging current allowed by the power battery.

[0066] Alpha and beta can be set according to different vehicles, and both alpha and beta are values greater than 0 and less than 1. For example, alpha is 0.7 and beta is 0.3.

[0067] In this embodiment, the higher the current temperature of the charging seat, the smaller the charging limiting current; the lower the current temperature of the charging seat, the larger the charging limiting current.

[0068] S104: Send the charging limiting current to the charging pile, so that the charging pile charges the power battery according to the charging limiting current.

[0069] If the current temperature of the charging base is less than the minimum temperature value, the power battery is charged using the allowed charging current. It can be seen that in this embodiment, when the current temperature of the charging base is less than the minimum temperature value in the target temperature control interval, the charging current does not need to be limited.

[0070] If the current temperature of the charging base is greater than the maximum temperature value, the power battery is charged using a preset multiple of the allowed charging current; wherein the preset multiple is greater than 0 and less than 1.

[0071] Wherein, the preset multiple is β, when the current temperature of the charging base is greater than the maximum temperature value in the target temperature control interval, the charging current is limited to β times the allowed charging current. For example, β is 0.3, and the allowed charging current is I0, when the current temperature of the charging base is greater than the maximum temperature value in the target temperature control interval, the charging current is limited to 0.3I0, that is, at this time, the power battery is charged using 0.3I0.

[0072] In a possible implementation, whether the connection between the charging gun and the charging base is normal can be determined by the following method:

[0073] S201: When the connection resistance reaches thermal equilibrium, calculate the current temperature difference between the current environment temperature in which the vehicle is located and the current resistance temperature of the connection resistance; wherein the connection resistance is generated during the connection of the electrode column in the charging gun and the charging base.

[0074] In this embodiment, during the charging process, the connection resistance is generated during the connection of the electrode column in the charging gun and the charging base, and the connection resistance generates heat. Wherein, when the connection resistance reaches thermal equilibrium, the temperature difference between the current environment temperature in which the vehicle is located and the current resistance temperature of the connection resistance is stable. Generally, the current environment temperature in which the vehicle is located is the initial temperature of the charging base.

[0075] Therefore, when thermal equilibrium is reached, the current environment temperature in which the vehicle is located and the current resistance temperature of the connection resistance are monitored, and the current temperature difference between the current environment temperature and the current resistance temperature is calculated.

[0076] For example, if the target temperature control interval is [50℃-90℃], the allowed charging current I0 is 200A, and if it is monitored that the current temperature of the charging base is 80 degrees, the charging limit current I can be calculated to be 95A according to the above formula.

[0077] If the connection resistance reaches thermal equilibrium and the current environment temperature is 30℃ during the process that the charging gun charges the power battery using 95A, the current temperature difference between the current environment temperature and the current resistance temperature can be calculated to be 50℃.

[0078] S202: Determine the charging current range to which the charging limit current belongs from the pre-generated mapping relationship; wherein the mapping relationship records the mapping relationship between the charging current range and the allowed temperature difference range in the case that the charging base and the charging gun are normally connected; the temperature difference in the allowed temperature difference range is the difference between the ambient temperature of the vehicle and the resistance temperature of the connection resistance when the connection resistance reaches thermal equilibrium.

[0079] For example, the mapping relationship between the charging current range and the allowed temperature difference range is shown in the following table:

[0080] Charging current range Allowed temperature difference range [0，50A) [0℃，20℃) [50A, 100A) [20℃，30℃) [100A, 200A) [30℃，50℃)

[0081] The mapping relationship is the mapping relationship between the charging current range and the allowed temperature difference range recorded in the case that the charging base and the charging gun are normally connected.

[0082] According to the mapping relationship, it can be determined that the charging limit current 95A belongs to the charging current range [50A, 100A).

[0083] S203: According to the queried charging current range, query the allowed temperature difference range having a mapping relationship with the charging current range from the mapping relationship.

[0084] According to the above example, the allowed temperature difference range [20℃, 30℃) having a mapping relationship with the charging current range [50A, 100A) is queried from the mapping relationship.

[0085] S204: Determine whether the current temperature difference is within the queried allowed temperature difference range.

[0086] According to the foregoing example, it is determined whether the current temperature difference 50℃ is within the queried allowed temperature difference range [20℃, 30℃).

[0087] S205: If the current temperature difference is within the queried allowed temperature difference range, it is indicated that the connection between the charging gun and the charging base is normal.

[0088] S206: If the current temperature difference is greater than the maximum temperature difference in the queried allowed temperature difference range, it is indicated that the connection between the charging gun and the charging base is abnormal.

[0089] According to the above example, the current temperature difference 50℃ is not within the queried allowed temperature difference range [20℃, 30℃), so the connection between the charging gun and the charging base is abnormal at this time. At this time, the user can be prompted to reconnect.

[0090] Based on the same technical concept, the present application also provides a temperature control device, such as Figure 3As shown, the device comprises:

[0091] a monitoring module 301, configured to monitor a current temperature of a charging seat on a vehicle in real time in a process of charging a power battery in the vehicle by using a charging gun on a charging pile;

[0092] a first judging module 302, configured to judge whether the current temperature of the charging seat is located in a target temperature control interval;

[0093] a first calculating module 303, configured to calculate a charging limiting current after a current charging current of the power battery is limited in real time according to the current temperature, a maximum temperature value and a minimum temperature value in the target temperature control interval, and an allowed charging current used for representing a charging capability of the power battery, if the current temperature of the charging seat is located in the target temperature control interval; wherein the current temperature and the charging limiting current are in a negative correlation relationship;

[0094] a first charging module 304, configured to send the charging limiting current to the charging pile, so that the charging pile charges the power battery according to the charging limiting current.

[0095] Optionally, the device further comprises:

[0096] a second charging module, configured to charge the power battery by using the allowed charging current, if the current temperature of the charging seat is less than the minimum temperature value.

[0097] Optionally, the device further comprises:

[0098] a third charging module, configured to charge the power battery by using a preset multiple of the allowed charging current, if the current temperature of the charging seat is greater than the maximum temperature value; wherein the preset multiple is greater than 0 and less than 1.

[0099] Optionally, when the first calculating module 303 calculates the charging limiting current after the current charging current of the power battery is limited in real time according to the current temperature, the maximum temperature value and the minimum temperature value in the target temperature control interval, and the allowed charging current used for representing the charging capability of the power battery, the first calculating module 303 is specifically configured to:

[0100] calculate the charging limiting current after the current charging current of the power battery is limited by the following formula:

[0101]

[0102] Wherein, I is the charging limit current; T2 is the maximum temperature value; T1 is the minimum temperature value; T is the current temperature; I0 is the allowable charging current; and a+β=1.

[0103] Optionally, the device further comprises:

[0104] The second calculation module is configured to calculate a current temperature difference between a current ambient temperature of the vehicle and a current resistance temperature of the connection resistance when the connection resistance reaches thermal equilibrium, wherein the connection resistance is generated during connection of the electrode column in the charging gun and the charging seat.

[0105] The determination module is configured to determine the charging current range to which the charging limit current belongs from a pre-generated mapping relationship, wherein the mapping relationship records a mapping relationship between a charging current range and an allowable temperature difference range in a case where the charging seat and the charging gun are normally connected; and the temperature difference in the allowable temperature difference range is a difference between an ambient temperature of the vehicle and a resistance temperature of the connection resistance when the connection resistance reaches thermal equilibrium.

[0106] The query module is configured to query, according to the queried charging current range, an allowable temperature difference range having a mapping relationship with the charging current range from the mapping relationship.

[0107] The second judgment module is configured to judge whether the current temperature difference is within the queried allowable temperature difference range.

[0108] The first connection module is configured to represent that the connection between the charging gun and the charging seat is normal if the current temperature difference is within the queried allowable temperature difference range.

[0109] The second connection module is configured to represent that the connection between the charging gun and the charging seat is abnormal if the current temperature difference is greater than a maximum temperature difference in the queried allowable temperature difference range.

[0110] Figure 4 A structure schematic diagram of an electronic device provided by the embodiment of the application comprises a processor 401, a memory 402 and a bus 403, the memory 402 stores machine readable instructions executable by the processor 401, when the electronic device runs the information processing method described above, the processor 401 and the memory 402 communicate through the bus 403, and the processor 401 executes the machine readable instructions to execute the method steps described in the embodiment one.

[0111] The embodiment of the application further provides a computer readable storage medium, the computer readable storage medium stores a computer program, and the computer program is run by a processor to execute the method steps described in the embodiment one.

[0112] Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working processes of the apparatus, the electronic device and the computer readable storage medium described above can refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

[0113] In several embodiments provided in the present application, it should be understood that the disclosed method, apparatus, electronic device and computer readable storage medium can be implemented by other manners. The apparatus embodiments described above are only schematic, for example, the division of the modules is only a logical function division, and actual implementation can have another division manner, for example, a plurality of modules or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed each other can be indirect coupling or communication connection through some communication interfaces, apparatuses or modules, which can be electrical, mechanical or other forms.

[0114] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0115] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit.

[0116] If the functions are realized in the form of software function units and sold or used as independent products, they can be stored in a nonvolatile computer readable storage medium executable by a processor. Based on this understanding, the technical solutions of the present application essentially or the part of the prior art or the part of the technical solutions can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a plurality of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application. The foregoing storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and various program codes that can be stored in the medium.

[0117] Finally, it should be noted that the above-described embodiments are merely specific embodiments of the present application, which are used to illustrate the technical solutions of the present application, but not to limit the same. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that any skilled person in the art can still modify or easily think of changes to the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some of the technical features, within the technical range disclosed by the present application. The modifications, changes or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A temperature control method characterized by, The method comprises: monitoring the current temperature of a charging seat on the vehicle for connecting a charging gun in the process of charging the power battery in the vehicle by using the charging gun on the charging pile; determining whether the current temperature of the charging seat is in a target temperature control interval; if the current temperature of the charging seat is in the target temperature control interval, calculating a charging limit current after limiting the current charging current of the power battery in real time according to the current temperature, the maximum temperature value and the minimum temperature value in the target temperature control interval, and the allowed charging current for representing the charging capacity of the power battery; wherein the current temperature and the charging limit current are in a negative correlation relationship; sending the charging limit current to the charging pile, so that the charging pile charges the power battery according to the charging limit current; the method further comprises: calculating the charging limit current after limiting the current charging current of the power battery by the following formula: wherein I is the charging limit current; T2 is the maximum temperature value; T1 is the minimum temperature value; T is the current temperature; I0 is the allowed charging current; and α+β=1.

2. The method of claim 1, wherein, The method further comprises: if the current temperature of the charging seat is less than the minimum temperature value, charging the power battery using the allowed charging current.

3. The method of claim 1, wherein, The method further comprises: if the current temperature of the charging seat is greater than the maximum temperature value, charging the power battery using a preset multiple of the allowed charging current; wherein the preset multiple is greater than 0 and less than 1.

4. The method of claim 1, wherein, The method further comprises: when the connection resistance reaches thermal equilibrium, calculating a current temperature difference between the current ambient temperature of the vehicle and the current resistance temperature of the connection resistance; wherein the connection resistance is generated in the process of connecting the electrode column in the charging gun with the charging seat; determining the charging current range to which the charging limit current belongs from a pre-generated mapping relationship; wherein the mapping relationship records the mapping relationship between the charging current range and the allowed temperature difference range under the condition that the charging seat and the charging gun are normally connected; the temperature difference in the allowed temperature difference range is the difference between the ambient temperature of the vehicle and the resistance temperature of the connection resistance when the connection resistance reaches thermal equilibrium; querying the allowed temperature difference range having a mapping relationship with the charging current range from the mapping relationship according to the queried charging current range; determining whether the current temperature difference is within the queried allowed temperature difference range; if the current temperature difference is within the queried allowed temperature difference range, the connection between the charging gun and the charging seat is normal; if the current temperature difference is greater than the maximum temperature difference in the queried allowed temperature difference range, the connection between the charging gun and the charging seat is abnormal.

5. A temperature control device, characterized by, The device comprises: a monitoring module, configured to monitor a current temperature of a charging seat on a vehicle in real time during charging of a power battery in the vehicle using a charging gun on a charging pile; a first judging module, configured to judge whether the current temperature of the charging seat is in a target temperature control interval; a first calculating module, configured to calculate a charging limit current after limiting a current charging current of the power battery in real time according to the current temperature, a maximum temperature value and a minimum temperature value in the target temperature control interval, and an allowed charging current used to represent a charging capability of the power battery, if the current temperature of the charging seat is in the target temperature control interval; wherein the current temperature and the charging limit current are in a negative correlation relationship; a first charging module, configured to send the charging limit current to the charging pile, so that the charging pile charges the power battery according to the charging limit current; the first calculating module is specifically configured to calculate the charging limit current after limiting the current charging current of the power battery in real time according to the current temperature, the maximum temperature value and the minimum temperature value in the target temperature control interval, and the allowed charging current used to represent the charging capability of the power battery, when calculating the charging limit current after limiting the current charging current of the power battery in real time according to the current temperature, the maximum temperature value and the minimum temperature value in the target temperature control interval, and the allowed charging current used to represent the charging capability of the power battery. The device further comprises: a second charging module, configured to charge the power battery using the allowed charging current, if the current temperature of the charging seat is less than the minimum temperature value.

6. The apparatus of claim 5, wherein The device further comprises: a third charging module, configured to charge the power battery using a preset multiple of the allowed charging current, if the current temperature of the charging seat is greater than the maximum temperature value; wherein the preset multiple is greater than 0 and less than 1.

7. The apparatus of claim 5 wherein, The device comprises: a processor, a memory and a bus, the memory stores machine readable instructions executable by the processor, when the electronic device is running, the processor and the memory communicate through the bus, the machine readable instructions are executed by the processor to execute the steps of the method in any one of claims 1 to 4.

8. An electronic device, comprising: The computer readable storage medium stores a computer program, which is executed by the processor to execute the steps of the method in any one of claims 1 to 4. ​ 9. A computer-readable storage medium, characterized in that, ​

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