CN115782695A

CN115782695A - Heating device for power battery of electric vehicle and related equipment

Info

Publication number: CN115782695A
Application number: CN202211444869.6A
Authority: CN
Inventors: 乔森; 胡晨晖
Original assignee: Huawei Digital Power Technologies Co Ltd
Current assignee: Huawei Digital Power Technologies Co Ltd
Priority date: 2022-11-18
Filing date: 2022-11-18
Publication date: 2023-03-14
Also published as: WO2024104019A1

Abstract

The application provides a heating device for an electric vehicle power battery and related equipment. The heating device comprises a temperature control module and a heater. The temperature control module is used for controlling the heater to heat the power battery according to the comparison result of the battery core temperature of the power battery and the preset temperature. The heating device can acquire the connection state of the power battery and an external power supply from the vehicle-mounted charger and acquire the battery core temperature and the residual electric quantity of the power battery from the battery management system. The heating device opens or closes the temperature control module according to the current battery demand information, the residual electric quantity and the connection state, so that the driving performance and the endurance mileage of the electric vehicle in the low-temperature environment are considered.

Description

Heating device of power battery of electric vehicle and related equipment

Technical Field

The present application relates to the field of electric vehicles, and more particularly, to a heating device for a power battery of an electric vehicle and related equipment.

Background

The electric core temperature of the power battery in the electric vehicle can reduce when being lower, and the power battery is generally required to be heated to improve the electric core temperature, so that the performance of the power battery is improved, and the driving performance and the driving experience of the electric vehicle are improved. However, heating the power battery consumes the remaining amount of power of the power battery, thereby reducing the driving range of the electric vehicle.

Disclosure of Invention

The application provides a heating device and relevant equipment for electric vehicle power battery, can compromise continuation of the journey mileage and drivability of electric vehicle under low temperature environment.

The present application is described below in terms of various aspects, it being understood that the following embodiments and advantages of the various aspects may be referred to one another.

In a first aspect, the present application provides a heating device for an electric vehicle power battery. The electric vehicle comprises a vehicle-mounted charger, a battery management system, a power battery and a heating device. The heating device comprises a temperature control module and a heater. The heater is used to heat the power cell. The temperature control module is used for receiving the cell temperature of the power battery from the battery management system and controlling the heater to heat the power battery according to the comparison result of the cell temperature of the power battery and the preset temperature. The heating device is used for acquiring current battery demand information of the electric vehicle, receiving the connection state of the power battery and an external power supply from the vehicle-mounted charger, receiving the residual electric quantity of the power battery from the battery management system, and controlling the heater to be turned on or turned off the temperature control module according to the current battery demand information of the next travel of the electric vehicle, the residual electric quantity of the power battery and the connection state of the power battery and the external power supply.

In the embodiment of the present application, the current battery demand information includes at least one of a power demand value or a power demand value. The preset demand values include a preset power demand value and a preset power demand value.

In the embodiment of the application, the heating device not only can control the heater to heat the power battery according to the comparison result of the electric core temperature of the power battery and the preset temperature, but also can judge whether to control the heater to heat the power battery according to the comparison result of the electric core temperature of the power battery and the preset temperature according to the current battery demand information of the electric vehicle, the residual capacity of the power battery and the connection state of the power battery and the external power supply. Correspondingly, the heating device that this application embodiment provided not only can be through the electric core temperature that improves power battery and then promote electric vehicle's drivability and drive experience, thereby can also reduce the power consumption that the unnecessary power battery heating caused and promote electric vehicle's continuation of the journey mileage.

With reference to the first aspect, in a first possible implementation manner, the heating device is configured to turn on or turn off the temperature control module in response to a comparison result of the current battery demand information and the preset demand value, a comparison result of the remaining capacity and the preset capacity, and a connection state of the power battery and the external power supply.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner, the heating device is configured to turn on the temperature control module in response to that the power demand value is greater than or equal to the preset demand value, the remaining power is greater than or equal to the preset power, and the power battery is connected with the external power supply in the current battery demand information. The heating device is used for responding to the situation that the power demand value is smaller than the preset demand value, the residual electric quantity is smaller than or equal to the preset electric quantity and the power battery is not connected with the external power supply in the current battery demand information, and the heating device closes the temperature control module.

In this embodiment, the heating device is configured to correspondingly turn on or turn off the temperature control module according to a comparison result between the current battery demand information and the preset demand value, a comparison result between the remaining power amount and the preset power amount, and a connection state between the power battery and the external power supply. Correspondingly, the heating device provided by the embodiment of the application can reduce the electric quantity loss caused by unnecessary heating of the power battery, thereby improving the endurance mileage of the electric vehicle.

With reference to any one of the first aspect to the second possible implementation manner of the first aspect, in a third possible implementation manner, the heating device is configured to acquire current battery demand information from a navigation device associated with the electric vehicle, or the heating device is configured to acquire historical driving information from a navigation device associated with the electric vehicle. The navigation device or the heating device is used for calculating the current battery demand according to historical driving information, and the historical driving information comprises at least one of speed parameters, road condition parameters, distance parameters, duration parameters, acceleration parameters or congestion parameters of the electric vehicle in the historical travel.

In this embodiment, the heating device may directly obtain the current battery demand information from the navigation device, thereby reducing the computing power requirement of the controller. The heating device can also acquire historical driving information from the navigation device and quickly calculate the current battery requirement according to the historical driving information, so that the applicability of the heating device is improved. And, the heating device can continuously improve the accuracy of the current battery demand information according to the continuously accumulated historical driving information.

With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation manner, the heating device is configured to output the preset electric quantity demand value in response to a comparison result between at least one of the distance parameter, the duration parameter, or the road condition parameter of the historical trip and a corresponding preset parameter value. The heating device responds to a comparison result of at least one of a speed parameter, an acceleration parameter or a congestion parameter of the historical travel and a corresponding preset parameter value, and outputs a preset power demand value.

In this embodiment, the heating device is configured to calculate the preset electric quantity demand value or the preset power demand value according to one or more of the plurality of types of parameters of the historical trip, so that accuracy of a current battery demand is improved, electric quantity loss caused by unnecessary heating of the power battery is reduced, a driving range of the electric vehicle is increased, and applicability of the heating device to various scenes is improved.

With reference to the third possible implementation manner of the first aspect, in a fifth possible implementation manner, the preset power demand value includes a first preset power demand value and a second preset power demand value, and the heating device is configured to output the first preset power demand value in response to the speed parameter being greater than the preset speed parameter value. The heating device is used for responding to the speed parameter value less than or equal to the preset speed parameter value and outputting a second preset power demand value.

In this embodiment, the speed parameter is at least one of a maximum vehicle speed, an average vehicle speed, a maximum vehicle speed in a preset period, or an average vehicle speed in a preset period.

With reference to the third possible implementation manner of the first aspect, in a sixth possible implementation manner, the preset electric quantity demand value includes a first preset electric quantity demand value and a second preset electric quantity demand value, and the heating device is configured to output the first preset electric quantity demand value in response to the distance parameter being greater than or equal to the preset distance parameter value. And the heating device is used for responding to the condition that the distance parameter is smaller than the preset distance parameter value and outputting a second preset electric quantity demand value.

In this embodiment, the distance parameter is the longest single or round trip distance, or the average distance of multiple trips within a preset period.

In this embodiment, heating device can calculate power demand or electric quantity demand respectively according to the multiclass parameter of historical stroke and the comparative result of the parameter value of predetermineeing rather than corresponding to improve the precision of current battery demand, thereby reduce the electric quantity loss that the unnecessary power battery heating caused and promote electric vehicle's continuation of the journey mileage, improved heating device to the suitability in all kinds of scenes.

In a second aspect, the present application provides a controller for a power cell heating device of an electric vehicle. The electric vehicle comprises a vehicle-mounted charger, a battery management system, a power battery and a heating device. The heating device includes a heater and a controller. The heater is used for heating the power cell. The controller comprises a communication module, a temperature control module and an identification module. The communication module is used for acquiring the cell temperature of the power battery from the battery management system, acquiring the connection state of the power battery and an external power supply from the vehicle-mounted charger, and acquiring the residual electric quantity of the power battery from the battery management system. The temperature control module is used for responding to the situation that the cell temperature is lower than the preset temperature to control the heater to heat the power battery. The identification module is used for turning on or turning off the temperature control module according to the residual electric quantity of the power battery and the connection state of the power battery and an external power supply.

The controller provided by this embodiment can correspondingly turn on or turn off the temperature control module of the heating device according to the comparison result between the current battery demand information and the preset demand value, the comparison result between the remaining power and the preset power, and the connection state between the power battery and the external power supply. Correspondingly, thereby can heat power battery when the temperature control module in the controller that this application embodiment provided opens and promote electric vehicle's drivability and driving experience, thereby can reduce the power consumption that the unnecessary power battery heating caused when the temperature control module in the controller is closed and promote electric vehicle's continuation of the journey mileage, improved the suitability of heating device to all kinds of scenes.

With reference to the second aspect, in a first possible implementation manner, the identification module is configured to start the temperature control module in response to that the remaining power is less than the preset power and the power battery is not connected to the external power source. The identification module is used for responding to the situation that the residual electric quantity is larger than or equal to the preset electric quantity and the power battery is connected with the external power supply, and starting the temperature control module. In this embodiment, the identification module may control the temperature control module to be turned on or off according to a plurality of scenarios. Thereby can heat power battery when temperature control module opens and promote electric vehicle's drivability and drive experience, thereby can reduce the electric quantity loss that the unnecessary power battery heating caused when temperature control module closes and promote electric vehicle's continuation of the journey mileage, improved the suitability of heating device to all kinds of scenes.

In a third aspect, the present application provides a controller for a power battery heating apparatus of an electric vehicle. The electric vehicle comprises a vehicle-mounted charger, a battery management system, a power battery and a heating device. The heating device includes a heater and a controller. The heater is used for heating the power cell. The controller comprises a communication module, a temperature control module and an identification module. The communication module is used for acquiring the connection state of the power battery and an external power supply from the vehicle-mounted charger or acquiring the residual electric quantity of the power battery from the battery management system. The temperature control module is used for acquiring the cell temperature of the power battery from the battery management system and controlling the heater to heat the power battery in response to the cell temperature of the power battery being lower than a preset temperature. The identification module is used for acquiring historical driving information or current battery demand information of the electric vehicle and is used for turning on or turning off the temperature control module according to at least one of the remaining capacity, the connection state, the current battery demand information or the historical driving information.

The controller provided by this embodiment can correspondingly turn on or off the temperature control module of the heating device according to at least one of the remaining capacity, the connection state, the current battery demand information, or the historical driving information. Correspondingly, thereby not only can heat power battery among the controller that this application embodiment provided and promote electric vehicle's drivability and driving experience, thereby can also reduce the power loss that the heating of unnecessary power battery caused and promote electric vehicle's continuation of the journey mileage, improved the suitability of heating device to all kinds of scenes.

With reference to the third aspect, in a first possible implementation manner, the identification module is configured to, in response to that the distance parameter or the duration parameter in the historical driving information is smaller than the corresponding preset parameter value, the remaining power amount is greater than or equal to the preset power amount, and the power battery is connected to an external power supply, start the temperature control module. The identification module is used for responding to the situation that the distance parameter or the duration parameter in the historical driving information is larger than or equal to the corresponding preset parameter value, the residual electric quantity is smaller than the preset electric quantity, and the power battery is not connected with the external power supply, and the identification module closes the temperature control module.

In this embodiment, the distance parameter or the duration parameter in the historical driving information is smaller than the corresponding preset parameter value, and the electric quantity demand value of the electric vehicle is smaller. The residual electric quantity of the power battery is large, and the power battery can be heated, so that the drivability of the electric vehicle is improved. And the power battery is connected with an external power supply, so that the electric quantity loss of the power battery can be supplemented in time. Correspondingly, the temperature control module is opened by the identification module, so that the driving performance and the driving experience of the electric vehicle are improved. When the electric quantity demand of the electric vehicle is large and the residual electric quantity of the power battery is small, the electric quantity loss of the power battery needs to be reduced, and the power battery is not connected with an external power supply so that the power battery cannot be charged, so that the electric quantity loss caused by heating the power battery needs to be avoided. Correspondingly, the temperature control module is closed by the identification module, so that the power battery is prevented from being heated, the electric quantity is saved, and the actual endurance mileage of the electric vehicle is improved.

With reference to the third aspect, in a second possible implementation, the identification module is configured to, in response to the power demand value being greater than or equal to the preset power demand value, the power demand value being less than the preset power demand value, and the remaining power being greater than or equal to the preset power, turn on the temperature control module. The identification module is used for responding to the condition that the power demand value is smaller than the preset power demand value, the electric quantity demand value is larger than or equal to the preset electric quantity demand value, and the residual electric quantity is smaller than the preset electric quantity, and closing the temperature control module.

In this embodiment, when the power demand value of the electric vehicle is large, the power battery needs to be heated to increase the rated power of the power battery, when the electric quantity demand value of the electric vehicle is smaller than the preset electric quantity demand value, the distance of the next trip of the electric vehicle is short, and when the remaining electric quantity is larger than or equal to the preset electric quantity, the electric quantity of the power battery is large, so that the next trip demand of the electric vehicle can be met. Correspondingly, the temperature control module is opened by the identification module, so that the driving performance and the driving experience of the electric vehicle are improved. When the power demand of the electric vehicle is small, the rated power demand on the power battery is low, when the electric quantity demand of the electric vehicle is greater than the preset electric quantity demand, the distance of the next trip of the electric vehicle is long, and when the residual electric quantity is less than the preset electric quantity, the electric quantity of the power battery is small, so that the heating of the power battery is avoided, and the electric quantity of the power battery is saved. Correspondingly, the identification module closes the temperature control module, so that the actual endurance mileage of the electric vehicle is improved.

With reference to the third aspect, in a third possible implementation, the identification module is configured to turn on or turn off the temperature control module in response to a comparison result of one parameter in the historical driving information and a corresponding preset parameter value.

The controller provided by the present embodiment can determine the power demand value or the electric quantity demand value of the electric vehicle accordingly based on the comparison result of one parameter in the historical driving information and the corresponding preset parameter value. Correspondingly, the identification module starts the temperature control module when determining that the power demand value of the electric vehicle is low according to one parameter in the historical driving information, so that the driving performance and the driving experience of the electric vehicle are improved. The identification module closes the temperature control module when determining that the electric quantity demand value of the electric vehicle is higher according to one parameter in the historical driving information, so that the power battery is prevented from being heated, the electric quantity is saved, and the actual endurance mileage of the electric vehicle is improved.

In a fourth aspect, the present application provides an electric vehicle comprising a power battery, an onboard charging system, a battery management system, and the heating device provided in any one of the first to sixth possible embodiments of the first aspect. Alternatively, the electric vehicle includes a power battery, an on-board charging system, a battery management system, and a heating device. Wherein the heating device comprises a heater and the controller provided in any one of the third possible embodiments of the second to third aspects.

It can be understood that the heating device of the electric vehicle provided in the embodiment of the present application may heat or not heat the power battery according to one or more factors of current battery demand information, remaining capacity, and connection state of the power battery and the external power source, thereby considering mileage and drivability of the electric vehicle in a low temperature environment.

Drawings

FIG. 1 is a schematic illustration of an electric vehicle;

FIG. 2 is a schematic diagram of an electric vehicle provided by an embodiment of the present application;

FIG. 3 is another schematic diagram of an electric vehicle provided by an embodiment of the present application;

fig. 4 is another schematic diagram of an electric vehicle provided in an embodiment of the present application.

Detailed Description

The heating device for a power battery in an electric vehicle and related equipment provided by the present application will be described with reference to the drawings.

Referring to fig. 1, fig. 1 is a schematic view of an electric vehicle. As shown in fig. 1, the electric vehicle 1 includes a power battery 10 and a heating device 20. Wherein the heating device 20 is used to heat the power cell 10. The heating device 20 includes a heater 200 and a controller 201. Wherein, the controller 201 is used for controlling the heater 200 to heat the power battery 10.

In a low-temperature environment, the cell temperature of the power battery 10 of the electric vehicle 1 decreases. If the cell temperature of the power battery 10 of the electric vehicle 1 is too low, the performance of the power battery 10 may be reduced, and the drivability of the electric vehicle 1 may be affected. In response to the cell temperature of the power battery 10 being too low, the controller 201 controls the heater 200 to heat the power battery 10. The heater 200 heats the power battery 10, so that the cell temperature of the power battery 10 is gradually increased, and thus the performance of the power battery 10 is improved, and the drivability of the electric vehicle 1 is improved.

Although, the heater 200 heating the power cell 10 may improve the performance of the power cell 10. However, the heater 200 heats the power cell 10, and the power supply from the power cell 10 is required, so that the remaining capacity of the power cell 10 is reduced, and the range of the electric vehicle 1 is reduced.

Therefore, the heating of the cell temperature of the power battery 10 needs to take into consideration not only the drivability of the electric vehicle 1 but also the mileage of the electric vehicle 1.

In order to solve the above technical problem, an embodiment of the present application provides a heating device for an electric vehicle power battery, a controller thereof, and an electric vehicle, which can determine whether to heat the power battery 10 when a cell temperature of the power battery 10 is too low according to one or more of historical driving information of the electric vehicle 1, a current battery demand of the electric vehicle 1, a remaining capacity of the power battery 10, and a connection state of the power battery 10 and an external power supply, so as to take into account a cruising range and a driving performance of the electric vehicle 1.

Fig. 2 is a schematic diagram of an electric vehicle according to an embodiment of the present application. As shown in fig. 2, the electric vehicle 1 includes a power battery 10, a heating device 20, an on-board charger 30, and a battery management system 40. In the embodiment of the present application, the heating device 20 includes a heater 200 and a controller 201. In the embodiment of the present application, the controller 201 is connected to the heater 200. The controller 201 is used to control the heater 200 to heat the power battery 10.

In the embodiment of the present application, the heater 200 is configured to receive power from the power cell 10 or the external power source 2 and generate heat for heating the power cell 10. In the embodiment of the present application, the external power source 2 includes at least one of a charging pile, an energy storage device, or an ac power grid.

In the embodiment of the present application, the heating device 20 may include one or more of a driving motor, a cooling system, a charging device, a heat circuit, and other heat generating or heat conducting devices in the electric vehicle 1. In the embodiment of the present application, the heater 200 includes at least one of a Positive Temperature Coefficient (PTC) heater or a driving motor. Wherein the PTC heater serves to transfer heat to the power battery 10 to heat the power battery 10. The driving motor can generate heat to heat the cooling liquid of the driving motor after receiving the current, and the heat of the cooling liquid of the driving motor transfers the heat to the power battery 10 through the thermal loop to heat the power battery 10.

In the embodiment of the present application, the controller 201 includes a temperature control module 2011. The temperature control module 2011 of the controller 201 is configured to control the heater 200 to heat the power battery 10 in response to the cell temperature of the power battery 10 being lower than the preset temperature. In this embodiment, the controller 201 or the heating device 20 may turn on or off the temperature control module 2011.

Illustratively, the heating device 20 or the controller 201 turns on the temperature control module 2011. The core temperature of power battery 10 is lower than the preset temperature, and temperature control module 2011 responds to the core temperature of power battery 10 being lower than the preset temperature, and temperature control module 2011 controls heater 200 to heat power battery 10, and the core temperature of power battery 10 gradually rises. Accordingly, the cell temperature of the power battery 10 is increased to be higher than the preset temperature. In response to the cell temperature of the power battery 10 being higher than the preset temperature, the temperature control module 2011 controls the heater 200 to stop heating the power battery 10.

Illustratively, the heating device 20 or controller 201 turns off the temperature control module 2011. When the core temperature of the power battery 10 is lower than the preset temperature, the temperature control module 2011 may not control the heater 200 to heat the power battery 10.

In the embodiment of the present application, the preset temperature is determined by the type of the power battery 10. Illustratively, the predetermined temperature is greater than or equal to-20 ℃ and less than or equal to 10 ℃. For example, the preset temperature may be 5 ℃.

In this embodiment, the controller 201 includes at least one of a Vehicle Control Unit (VCU), a Domain Control Unit (DCU), a Motor Control Unit (MCU), a control board, or a control chip. In one embodiment, the controller 201 is provided inside or outside the electric vehicle 1. That is, the controller 201 may also be used to control other functional modules of the drive motor, the cooling system, or the charging device of the electric vehicle 1. In one embodiment, the controller 201 may also be disposed inside the heating device 20. In one embodiment, the controller 201 may also be disposed inside the heater 200.

In the embodiment of the present application, the vehicle-mounted charger 30 is configured to receive power supplied by the external power source 2 and charge the power battery 10, and is configured to provide the connection state between the power battery 10 and the external power source 2 to the controller 201. Accordingly, the controller 201 is used to obtain the connection state of the power battery 10 and the external power source 2 from the vehicle-mounted charger 30. In the embodiment of the present application, the connection state signal is used to indicate the connection state of the power battery 10 and the external power supply 2. Specifically, the controller 201 is configured to obtain the connection state of the power battery 10 and the external power source 2 according to the connection state signal output by the vehicle-mounted charger 30.

Illustratively, a gun insertion detection module is arranged in the vehicle-mounted charger 30. The gun insertion detection module is used for detecting the connection state of the power battery 10 and the external power supply 2 and outputting a connection state signal. The connection status signal includes at least one of a connection acknowledge (CC) signal, a Control Pilot (CP) signal, a wake-up signal of the electric vehicle 1, or a gun insertion signal provided by the controller 201. A charging gun of the external power supply 2 is inserted into a charging interface of the electric vehicle 1, and a gun insertion detection module of the vehicle-mounted charger 30 outputs high-level information. The controller 201 is configured to determine that the power battery 10 is connected to the external power source 2 in response to the connection state signal being at a high level. The charging interface of the electric vehicle 1 is not plugged with a charging gun of the external power supply 2, and the gun plugging detection module of the vehicle-mounted charger 30 outputs low level information. The controller 201 is configured to determine that the power battery 10 is connected to the external power source 2 in response to the connection state signal being at a low level.

In the embodiment of the present application, the battery management system 40 is configured to detect a battery parameter of the power battery 10. The battery parameter includes at least one of a cell temperature or a state of charge (SOC).

In one embodiment, the battery management system 40 is configured to provide the cell temperature and the remaining capacity of the power battery 10 to the controller 201. Accordingly, the controller 201 is configured to obtain the cell temperature and the remaining capacity of the power battery 10 from the battery management system 40.

In one embodiment, the battery management system 40 is configured to provide the cell temperature of the power battery 10 to the temperature control module 2011. Accordingly, the temperature control module 2011 is configured to obtain the cell temperature of the power battery 10 from the battery management system 40.

Illustratively, the battery management system 40 includes a temperature detection module. The temperature detection module is configured to detect a cell temperature of the power battery 10. In an embodiment of the present application, the temperature detection module includes at least one of a thermocouple, a positive temperature coefficient thermistor, a negative temperature coefficient thermistor, a silicon resistor temperature sensor, or an IC temperature sensor. The temperature detection module of the battery management system 40 outputs a cell temperature signal. The cell temperature signal is used to indicate the cell temperature of the power battery 10. The controller 201 or the temperature control module 2011 is configured to obtain the cell temperature of the power battery 10 according to the cell temperature signal.

Illustratively, the battery management system 40 includes a charge detection module. The power detection module is used for detecting the remaining power of the power battery 10. The power detection module of the battery management system 40 outputs a remaining power signal. Wherein the remaining capacity signal is used to indicate the remaining capacity of the power battery 10. The controller 201 is used for acquiring the residual capacity of the power battery 10 according to the residual capacity signal.

In the embodiment of the present application, the heating device 20 is configured to turn on or turn off the temperature control module 2011 according to at least one of the remaining power of the power battery 10 and the connection state between the power battery 10 and the external power source 2. Accordingly, the controller 201 of the heating device 20 is configured to turn on or off the temperature control module 2011 according to at least one of the remaining capacity of the power battery 10 and the connection state of the power battery 10 and the external power source 2. Accordingly, the temperature control module 2011 of the controller 201 is configured to turn on or turn off the temperature control module 2011 according to at least one of the remaining power of the power battery 10 and the connection state of the power battery 10 and the external power source 2.

In one embodiment, the heating device 20 is configured to turn on or off the temperature control module 2011 in response to a comparison result between the remaining power of the power battery 10 and a preset power. For example, the preset charge may be 50%.

Illustratively, the heating device 20 is configured to turn on the temperature control module 2011 in response to the remaining power of the power battery 10 being greater than or equal to a preset power. It can be understood that, if the remaining capacity of the power battery 10 is greater than or equal to the preset capacity, the remaining capacity of the power battery 10 is greater, and the temperature control module 2011 is turned on by the heating device 20. Accordingly, the heater 200 may heat the power battery 10 using power supplied from the power battery 10, thereby increasing the temperature of the power battery 10, and thus improving the drivability of the electric vehicle 1 with less influence on the driving range of the electric vehicle 1.

Illustratively, the heating device 20 is configured to turn off the temperature control module 2011 in response to the remaining power of the power battery 10 being less than the preset power. It can be understood that, if the remaining capacity of the power battery 10 is less than the preset capacity, the remaining capacity of the power battery 10 is less, and the heating device 20 turns off the temperature control module 2011. Accordingly, the heater 200 does not heat the power battery 10, so that the power consumption of the power battery 10 can be reduced, and the influence on the driving range of the electric vehicle 1 can be avoided.

In one embodiment, the heating device 20 is used to turn on or off the temperature control module 2011 in response to the connection status of the power battery 10 and the external power source 2.

Illustratively, the power battery 10 is connected to the external power source 2. The heating device 20 is configured to respond to the connection of the power battery 10 and the external power source 2, and the heating device 20 turns on the temperature control module 2011. It is understood that when the power battery 10 is connected to the external power source 2, the heater 200 may heat the power battery 10 by using power supplied from the power battery 10, so as to increase the temperature of the power battery 10, and thus improve the drivability of the electric vehicle 1. In addition, the electric quantity of the power battery 10 can be charged by the external power supply 2 after being reduced, so that the driving range of the electric vehicle 1 is prevented from being influenced.

The power cell 10 is not connected to the external power source 2. In response to the power battery 10 not being connected to the external power source 2, the heating device 20 turns off the temperature control module 2011. It can be understood that, when the power battery 10 is not connected to the external power source 2, the heater 200 heats the power battery 10 to reduce the remaining power of the power battery 10 and cannot be charged by the external power source 2, and the heating device 20 turns off the temperature control module 2011 to reduce the power loss of the power battery 10, thereby avoiding affecting the driving range of the electric vehicle 1.

In one embodiment, the heating device 20 is configured to turn on or turn off the temperature control module 2011 in response to a comparison result between the remaining power of the power battery 10 and the preset power and a connection state between the power battery 10 and the external power source 2. The heating device 20 is configured to turn on or off the temperature control module 2011 in response to a comparison result between the remaining capacity of the power battery 10 and the preset capacity and a connection state between the power battery 10 and the external power source 2, so as to achieve both drivability and driving mileage of the electric vehicle 1.

Illustratively, the remaining capacity of the power battery 10 is greater than or equal to a preset capacity, and the power battery 10 is connected to the external power source 2. In response to that the remaining power of the power battery 10 is greater than or equal to the preset power and the power battery 10 is connected to the external power source 2, the heating device 20 turns on the temperature control module 2011. It can be understood that the remaining capacity of the power battery 10 is large and can be charged by the external power source 2 at any time, and the heater 200 can heat the power battery 10 by the power supplied by the power battery 10, so as to increase the temperature of the power battery 10 and further improve the drivability of the electric vehicle 1.

Illustratively, the remaining capacity of the power battery 10 is less than the preset capacity, and the power battery 10 is connected to the external power source 2. In response to that the remaining power of the power battery 10 is less than the preset power and the power battery 10 is connected to the external power source 2, the heating device 20 turns off the temperature control module 2011. Accordingly, the power battery 10 is connected to the external power supply 2, and the external power supply 2 charges the power battery 10 so that the remaining capacity of the power battery 10 increases. Subsequently, the remaining capacity of the power battery 10 is increased to be greater than or equal to the preset capacity. The heating device 20 turns on the temperature control module 2011.

It is understood that when the remaining capacity of the power battery 10 is small and can be charged by the external power source 2, the heater 200 directly heats the power battery 10, which results in further reduction of the remaining capacity of the power battery 10. At this time, if the user needs to drive the electric vehicle 1, the driving range of the electric vehicle 1 decreases. Accordingly, the heating device 20 turns off the temperature control module 2011, thereby avoiding heating the power battery 10 and reducing the driving range of the electric vehicle 1. As the power battery 10 is charged by the external power source 2, the remaining capacity of the power battery 10 increases, the heating device 20 turns on the temperature control module 2011, and the heater 200 heats the power battery 10, so that the performance of the power battery 10 is improved and the driving range of the electric vehicle 1 is not affected.

Illustratively, the remaining capacity of the power battery 10 is greater than or equal to the preset capacity, and the power battery 10 is not connected to the external power source 2. In response to that the remaining power of the power battery 10 is greater than the predetermined power and the power battery 10 is not connected to the external power source 2, the heating device 20 turns on the temperature control module 2011. It can be understood that, when the remaining amount of the power battery 10 is large, the heater 200 may heat the power battery 10 by using the power supplied by the power battery 10, so as to increase the temperature of the power battery 10, thereby improving the driving performance of the electric vehicle 1 and having less influence on the driving range of the electric vehicle 1.

Illustratively, the remaining capacity of the power battery 10 is less than the preset capacity, and the power battery 10 is not connected to the external power source 2. In response to that the remaining power of the power battery 10 is less than the preset power and the power battery 10 is not connected to the external power source 2, the heating device 20 turns off the temperature control module 2011. It is understood that when the remaining amount of the power battery 10 is small, the heater 200 heats the power battery 10 to further reduce the driving range of the electric vehicle 1. Accordingly, the heating device 20 turns off the temperature control module 2011, thereby increasing the driving range of the electric vehicle 1.

Referring to fig. 3, fig. 3 is another schematic view of an electric vehicle provided by the present application. As shown in fig. 3, the electric vehicle 1 shown in fig. 2 further includes a navigation device 50, and the controller 201 shown in fig. 2 further includes an identification module 2012.

In the embodiment of the present application, the navigation device 50 is associated with the electric vehicle 1. During the driving of the electric vehicle 1, the navigation device 50 continuously acquires the driving information of the electric vehicle 1. The controller 201 controls the navigation device 50 to continuously acquire the driving information of the electric vehicle 1 before the heater 200 heats the power battery 10. The drive information acquired by the navigation device 50 is the history drive information with respect to the controller 201.

In the embodiment of the present application, the historical driving information includes at least one of a speed parameter, a road condition parameter, a distance parameter, a duration parameter, an acceleration parameter, or a congestion parameter in the historical driving information of one or more historical trips of the electric vehicle 1.

In the embodiment of the present application, the navigation device 50 includes at least one of a car machine, a navigation device, a remote communication terminal (T-Box), a central control device, or a terminal loaded with a remote application software (APP). In one embodiment, the navigation device 50 is provided inside the electric vehicle 1. That is, the electric vehicle 1 includes the navigation device 50. In one embodiment, the navigation device 50 can be disposed inside the controller 201. That is, the controller 201 includes the navigation device 50.

In one embodiment, the navigation device 50 is used to acquire and store historical driving information of the electric vehicle 1. Accordingly, the controller 201 is configured to acquire the current battery demand information of the electric vehicle 1 according to the historical driving information of the electric vehicle 1. In one embodiment, the identification module 2012 of the controller 201 is configured to obtain the current battery demand information of the electric vehicle 1 according to the historical driving information of the electric vehicle 1 received from the navigation device 50.

In one embodiment, the navigation device 50 is configured to provide the current battery demand information of the electric vehicle 1 to the controller 201 according to the historical driving information of the electric vehicle 1. Accordingly, the controller 201 is configured to acquire the current battery demand information of the electric vehicle 1 from the navigation device 50. In one embodiment, the identification module 2012 of the controller 201 is configured to obtain the current battery demand information of the electric vehicle 1 from the navigation device 50.

In the embodiment of the present application, the current battery demand information includes at least one of an electric quantity demand value or a power demand value. In an embodiment of the present application, the power demand value includes a first power demand value and a second power demand value, and the power demand value includes a first power demand value and a second power demand value.

In the embodiment of the present application, the preset demand value includes a preset electric quantity demand value and a preset power demand value. The preset demand value may be a parameter set by the driver or a parameter stored or configured within the controller 201. In one embodiment, the preset power demand or preset power demand may be a parameter set by a driver, a factory configuration parameter of the power battery 10, or a parameter stored or configured in the controller 201.

In one embodiment, the controller 201 or the navigation device 50 is configured to output the electric quantity demand value according to a comparison result between at least one of the distance parameter, the duration parameter, or the road condition parameter of the historical trip and a corresponding preset parameter value. In one embodiment, the controller 201 or the navigation device 50 is configured to output the power demand value according to a comparison result between at least one of the distance parameter, the duration parameter, or the road condition parameter of the historical trip and a corresponding preset parameter value.

In one embodiment, the controller 201 or the navigation device 50 is configured to output the power demand value according to a comparison result of at least one of a speed parameter, an acceleration parameter or a congestion parameter of the historical trip with a corresponding preset parameter value. In one embodiment, the controller 201 or the navigation device 50 is configured to output the electric quantity demand value according to a comparison result between at least one of a speed parameter, an acceleration parameter or a congestion parameter of the historical trip and a corresponding preset parameter value.

In the embodiment of the present application, the preset parameter value may be a parameter set by a driver, a factory configuration parameter of the controller 201 or the navigation device 50, or a parameter stored in an internal memory. The preset parameter value includes at least one of a preset distance parameter value, a preset duration parameter value, a preset acceleration parameter value, a preset road condition parameter value or a preset congestion parameter value.

Illustratively, the speed parameter includes at least one of a maximum vehicle speed, an average vehicle speed, a maximum vehicle speed over a preset period, or an average vehicle speed over a preset period. It is understood that the higher the speed of the electric vehicle 1, the greater the rated power of the power battery 10 is required. Thus, the speed parameter may be used to represent the maximum power rating of the power battery 10 required for one or more historical trips of the electric vehicle 1. Accordingly, the power demand of the electric vehicle 1 on the battery in the next or future trips can be acquired according to the speed parameter in the historical driving information.

For example, the controller 201 or the navigation device 50 outputs the first power demand value in response to the speed parameter being greater than the preset speed parameter value in the historical driving information, the controller 201 or the navigation device 50. The controller 201 or the navigation device 50 outputs the second power demand value in response to the speed parameter being less than or equal to the preset speed parameter value in the history driving information, the controller 201 or the navigation device 50.

Illustratively, the acceleration parameter includes at least one of acceleration, number of accelerations, highest acceleration within a preset period, or average acceleration or number of accelerations within a preset period. It is understood that the faster the acceleration or the greater the number of accelerations of the electric vehicle 1, the greater the instantaneous power required by the power battery 10. Thus, the acceleration parameter may be used to represent the maximum instantaneous power of the power cell 10 required during one or more historical trips of the electric vehicle 1. Accordingly, the power demand of the electric vehicle 1 for the battery in the next or future trips can be acquired according to the acceleration parameter in the history driving information.

For example, the acceleration parameter is greater than the preset acceleration parameter value in the history driving information, and the controller 201 or the navigation device 50 outputs the first power demand value. The acceleration parameter in the history driving information is less than or equal to the preset acceleration parameter value, and the controller 201 or the navigation device 50 outputs the second power demand value.

Illustratively, the congestion parameter includes at least one of congestion, clear traffic, congestion at a plurality of trips within a preset period, or average congestion at a plurality of trips within a preset period. It is understood that the higher the congestion, the lower the average speed of the electric vehicle 1 but the more battery power is consumed. Thus, the congestion parameter may be used to indicate a greater power rating and/or a greater charge of the power battery 10 required for one or more historical trips of the electric vehicle 1. Accordingly, the electric quantity demand of the electric vehicle 1 for the battery and/or the power demand of the battery in the next or future trips can be obtained according to the congestion parameters in the historical driving information.

Illustratively, the congestion parameter in the history driving information is greater than a preset congestion parameter value, and the controller 201 or the navigation device 50 outputs at least one of a first power demand value or a first power demand value. The congestion parameter in the historical driving information is less than or equal to the preset congestion parameter value, and the controller 201 or the navigation device 50 outputs at least one of the second power demand value or the second electricity demand value.

Illustratively, the distance parameter includes at least one of a longest single or round trip distance, or an average distance of multiple trips within a preset period. It is understood that the longer the driving distance of the electric vehicle 1, the more the amount of electricity required by the power battery 10. Thus, the distance parameter may be used to represent the maximum amount of power required by the power battery 10 over one or more historical trips of the electric vehicle 1. Accordingly, the electric quantity demand of the electric vehicle 1 on the battery in the next or future trips can be acquired according to the distance parameter in the historical driving information.

For example, the distance parameter is greater than or equal to the preset distance parameter value in the history driving information, and the controller 201 or the navigation device 50 outputs the first power demand value. The distance parameter in the history driving information is smaller than the preset distance parameter value, and the controller 201 or the navigation device 50 outputs the second electric quantity demand value.

Illustratively, the duration parameter includes at least one of a longest single or round trip duration, or a multiple trip average duration over a preset period. It is understood that the longer the driving period of the electric vehicle 1 is, the more the amount of electric power required by the power battery 10 is. Thus, the duration parameter may be used to represent the maximum amount of charge of the power cell 10 required for one or more historical trips of the electric vehicle 1. Accordingly, the electric quantity demand of the electric vehicle 1 on the battery in the next or future trips can be acquired according to the duration parameter in the historical driving information.

For example, the time period parameter in the history driving information is greater than or equal to the preset time period parameter value, and the controller 201 or the navigation device 50 outputs the first power demand value. The time length parameter in the historical driving information is smaller than the preset time length parameter value, and the controller 201 or the navigation device 50 outputs the second electric quantity demand value.

Illustratively, the road condition parameter includes at least one of snow, cross-country, high speed, urban area, or common road condition of multiple trips within a preset period or average road condition of multiple trips within a preset period. It can be understood that the more complicated the road conditions, the greater the rated power and capacity of the power battery 10 is required. Thus, the road condition parameters may be used to indicate the maximum rated power and charge of the power battery 10 required by the electric vehicle 1 in one or more historical trips.

Accordingly, the electric quantity demand of the electric vehicle 1 and the power demand of the battery in the next or future trips can be acquired according to the road condition parameters in the historical driving information. For example, the road condition parameter in the historical driving information is greater than the preset road condition parameter value, and the controller 201 or the navigation device 50 outputs at least one of the first power demand value or the first electric quantity demand value. The road condition parameter in the historical driving information is less than or equal to the preset road condition parameter value, and the controller 201 or the navigation device 50 outputs at least one of the second power demand value or the second electric quantity demand value.

In this embodiment, the heating device 20 may turn on or off the temperature control module 2011 according to a comparison result between the current battery demand and the preset demand value. Accordingly, the controller 201 of the heating apparatus 20 turns on or off the temperature control module 2011 according to the comparison result of the current battery demand and the preset demand value. The identification module 2012 of the controller 201 turns the temperature control module 2011 on or off based on the comparison of the current battery demand to the preset demand value.

Illustratively, the heating device 20 is configured to turn off the temperature control module 2011 in response to the power demand value in the current battery demand information being greater than or equal to the preset power demand value. The heating device 20 is configured to, in response to the power demand value in the current battery demand information being smaller than the preset power demand value, turn on the temperature control module 2011 by the heating device 20.

It can be understood that, when the electric quantity demand value in the current battery demand information is large, the driving range of the electric vehicle 1 for the next trip is long. Therefore, it is necessary to avoid further reduction of the remaining capacity of the power battery 10 due to heating, so as to avoid influence on the driving range of the next trip of the electric vehicle 1.

Illustratively, the heating device 20 is configured to turn on the temperature control module 2011 in response to the power demand value in the current battery demand information being greater than or equal to the preset power demand value. The heating device 20 is configured to turn off the temperature control module 2011 in response to the power demand value being less than the preset power demand value in the current battery demand information.

It is understood that when the power demand value is larger in the current battery demand information, the rated power or the instantaneous power of the power battery 10 needs to be raised. Therefore, the heating device 20 starts the temperature control module 2011, and the cell temperature of the power battery 10 is lower than the preset temperature, so that the power battery 10 can be heated, and the drivability of the electric vehicle 1 can be improved.

In the embodiment of the present application, the heating device 20 is configured to turn on or turn off the temperature control module 2011 according to a comparison result between at least one parameter in the historical driving information and a preset parameter value corresponding to the at least one parameter. Accordingly, the controller 201 of the heating apparatus 20 is configured to turn on or off the temperature control module 2011 according to a comparison result between at least one parameter in the historical driving information and a corresponding preset parameter value. The identification module 2012 of the controller 201 is configured to turn on or turn off the temperature control module 2011 according to a comparison result between at least one parameter in the historical driving information and a corresponding preset parameter value.

Illustratively, the heating device 20 is configured to turn off the temperature control module 2011 in response to the distance parameter being greater than or equal to the preset distance parameter value or the duration parameter being greater than or equal to the preset duration parameter value in the historical driving information. The heating device 20 is configured to respond to that the distance parameter is smaller than the preset distance parameter value or the duration parameter is smaller than the preset duration parameter value in the historical driving information, and the heating device 20 starts the temperature control module 2011.

It can be understood that, in the historical driving information, the distance parameter is greater than or equal to the preset distance parameter value or the duration parameter is greater than or equal to the preset duration parameter value, and the driving distance or the driving duration of the next or future trips of the electric vehicle 1 requires the power battery 10 to provide more electric quantity. Therefore, in order to avoid affecting the driving range of the next trip of the electric vehicle 1, it is necessary to reduce the power consumption of the power battery 10. Correspondingly, the temperature control module 2011 is closed by the heating device 20, and the electric core temperature of the power battery 10 is lower than the preset temperature, so that the power battery 10 is prevented from being heated, further loss of the residual electric quantity of the power battery 10 is avoided, and the influence on the cruising mileage and the driving experience of the next stroke of the electric vehicle 1 is avoided.

For example, the heating device 20 is configured to start the temperature control module 2011 in response to the speed parameter being greater than or equal to the preset speed parameter value or the acceleration parameter being greater than or equal to the preset acceleration parameter value in the historical driving information. The heating device 20 is configured to turn off the temperature control module 2011 in response to the speed parameter being less than the preset speed parameter value or the acceleration parameter being less than the preset acceleration parameter value in the historical driving information.

It is understood that the speed parameter is greater than or equal to the preset speed parameter value or the acceleration parameter is greater than or equal to the preset acceleration parameter value in the historical driving information, and the power battery 10 is required to provide larger power in the next or future trips of the electric vehicle 1. Therefore, in order to improve the drivability of the next trip of the electric vehicle 1, the power battery 10 needs to be heated so as to improve the rated power or the instantaneous power of the power battery 10. Accordingly, the heating device 20 starts the temperature control module 2011, so that the power battery 10 is heated, the performance of the power battery 10 is improved, and the drivability of the electric vehicle 1 is improved.

For example, the heating device 20 is configured to turn on the temperature control module 2011 in response to the road condition parameter being greater than or equal to the preset road condition parameter value or the congestion parameter being greater than or equal to the preset congestion parameter value in the historical driving information. The heating device 20 is configured to close the temperature control module 2011 in response to the road condition parameter being less than the preset road condition parameter value or the congestion parameter being less than the preset congestion parameter value in the historical driving information.

It can be understood that, in the historical driving information, the road condition parameter is greater than or equal to the preset road condition parameter value or the congestion parameter is greater than or equal to the preset congestion parameter value, and the power battery 10 is required to provide larger power or more electric quantity in the next or future trips of the electric vehicle 1. Therefore, in order to take into account the drivability and the driving range of the next trip of the electric vehicle 1, the heating device 20 may turn on or off the temperature control module 2011 accordingly.

Referring to fig. 4, fig. 4 is another schematic view of an electric vehicle provided by the present application. As shown in fig. 4, the controller 201 of the electric vehicle 1 shown in fig. 3 includes a communication module 2010, a temperature control module 2011 and an identification module 2012.

In the embodiment of the present application, the communication module 2010 of the controller 201 is respectively used for connecting the vehicle-mounted charger 30 and the battery management system 40. The communication module 2010 of the controller 201 is configured to obtain the connection state of the power battery 10 and the external power source 2 from the vehicle-mounted charger 30, and obtain the cell temperature of the power battery 10 and the remaining capacity of the power battery 10 from the battery management system 40.

In the embodiment of the present application, the communication module 2010 of the controller 201 is further used for connecting the navigation device 50. In one embodiment, the communication module 2010 of the controller 201 is used to obtain historical driving information from the navigation device 50. The identification module 2012 of the controller 201 is configured to obtain the current battery demand based on the historical driving information. In one embodiment, the communication module 2010 of the controller 201 is used to obtain the current battery demand from the navigation device 50.

In the embodiment of the present application, the communication module 2010 of the controller 201 may include any one of one or more ports. Furthermore, one port of the communication module 2010 may have both communication and output functions. In this embodiment, the communication module 2010, the battery management system 40, the temperature control module 2011, the identification module 2012 or other components are merely divided by functions, and are not limited to specific connection relationships or hardware modules.

In this embodiment, the temperature control module 2011 of the controller 201 is configured to control the heater 200 to heat the power battery 10 in response to the cell temperature of the power battery 10 being lower than the preset temperature. In the embodiment of the present application, the temperature control module 2011 of the controller 201 may be turned on or off.

Illustratively, the temperature control module 2011 of the controller 201 is turned on. The core temperature of power battery 10 is lower than the preset temperature, and temperature control module 2011 responds to the core temperature of power battery 10 being lower than the preset temperature, and temperature control module 2011 controls heater 200 to heat power battery 10, and the core temperature of power battery 10 gradually rises. Accordingly, the cell temperature of the power battery 10 is increased to be higher than the preset temperature. In response to the cell temperature of the power battery 10 being higher than the preset temperature, the temperature control module 2011 controls the heater 200 to stop heating the power battery 10.

Illustratively, the temperature control module 2011 of the controller 201 is off. When the core temperature of the power battery 10 is lower than the preset temperature, the temperature control module 2011 may not control the heater 200 to heat the power battery 10.

In the embodiment of the present application, the heating device 20 is configured to turn on or turn off the temperature control module 2011 according to one or more of the remaining capacity of the power battery 10, the connection state of the power battery 10 and the external power source 2, historical driving information of the electric vehicle 1, or the current battery demand of the electric vehicle 1. Accordingly, the controller 201 is configured to turn on or off the temperature control module 2011 according to one or more of the remaining capacity of the power battery 10, the connection state of the power battery 10 with the external power supply 2, historical driving information of the electric vehicle 1, or the current battery demand of the electric vehicle 1. Accordingly, the identification module 2012 is configured to turn on or turn off the temperature control module 2011 according to one or more of the remaining capacity of the power battery 10, the connection state of the power battery 10 and the external power source 2, historical driving information of the electric vehicle 1, or the current battery demand of the electric vehicle 1.

In the embodiment of the present application, the heating device 20, the controller 201, or the identification module 2012 is configured to turn on or turn off the temperature control module 2011 in response to at least one of a comparison result of at least one parameter in the historical driving information of the electric vehicle 1 and a pair of preset parameter values, a comparison result of the current battery demand information of the electric vehicle 1 and a preset demand value, a comparison result of the remaining capacity of the power battery 10 and a preset capacity, or a connection state of the power battery 10 and the external power source 2.

In one embodiment, the heating device 20, the controller 201 or the identification module 2012 is configured to turn on or off the temperature control module 2011 according to the historical driving information of the electric vehicle 1, the remaining capacity of the power battery 10 and the connection state of the power battery 10 and the external power source 2.

For example, the heating device 20 is configured to, in response to that the distance parameter or the duration parameter in the historical driving information of the electric vehicle 1 is smaller than the corresponding preset parameter value, the remaining power of the power battery 10 is smaller than or equal to the preset power, and the power battery 10 is connected to the external power source 2, turn on the temperature control module 2011 by the heating device 20.

It can be understood that, in the historical driving information of the electric vehicle 1, the distance parameter is smaller than the preset distance parameter or the duration parameter is smaller than the corresponding preset duration parameter, and the next or future trips of the electric vehicle 1 require less electric quantity of the power battery 10. The remaining capacity of the power battery 10 is greater than or equal to the predetermined capacity, and the remaining capacity of the power battery 10 is more available for supplying power to the heating device 20. The power battery 10 is connected with the external power source 2, and the power battery 10 can charge the power battery 10 by using the external power source 2. Accordingly, the heating apparatus 20 turns on the temperature control module 2011. When the cell temperature of the power battery 10 is lower than the preset temperature, the heating device 20 heats the power battery 10 to raise the temperature of the power battery 10, so as to improve the drivability of the electric vehicle 1. Furthermore, the power battery 10 can be charged by the external power supply 2 without reducing the driving range of the electric vehicle 1.

Illustratively, the heating device 20 is configured to turn off the temperature control module 2011 in response to the distance parameter or the duration parameter in the historical driving information of the electric vehicle 1 being greater than or equal to the corresponding preset parameter value, the remaining capacity of the power battery 10 being less than the preset capacity, and the power battery 10 being not connected to the external power source 2.

It can be understood that, in the historical driving information of the electric vehicle 1, the distance parameter is greater than or equal to the preset distance parameter or the duration parameter is greater than or equal to the corresponding preset duration parameter, and the next or future trips of the electric vehicle 1 require the power battery 10 to provide more electric quantity. The remaining capacity of the power battery 10 is smaller than the predetermined capacity, and the remaining capacity of the power battery 10 is less necessary to reduce the loss. The power battery 10 is not connected to the external power source 2, and the power battery 10 cannot be charged by the external power source 2. Accordingly, the heating device 20 turns off the temperature control module 2011. When the cell temperature of the power battery 10 is lower than the preset temperature, the heating device 20 does not heat the power battery 10, so that the power loss of the power battery 10 is reduced, and the endurance mileage of the electric vehicle 1 is increased.

For example, the heating device 20 is configured to turn off the temperature control module 2011 in response to the distance parameter or the duration parameter in the historical driving information of the electric vehicle 1 being greater than or equal to the corresponding preset parameter value, the remaining power of the power battery 10 being less than the preset power, and the power battery 10 being connected with the external power source 2.

It can be understood that, in the historical driving information of the electric vehicle 1, the distance parameter is greater than or equal to the preset distance parameter or the duration parameter is greater than or equal to the corresponding preset duration parameter, and the next or future trips of the electric vehicle 1 require the power battery 10 to provide more electric quantity. The remaining capacity of the power battery 10 is less than the preset capacity, and the remaining capacity of the power battery 10 is less, so that the loss needs to be reduced. Accordingly, the heating device 20 turns off the temperature control module 2011. When the core temperature of the power battery 10 is lower than the preset temperature, the heating device 20 does not heat the power battery 10, so that the power loss of the power battery 10 is reduced, and the requirement that a user conveniently starts the next stroke of the electric vehicle 1 at any time is met. In addition, the power battery 10 is connected with the external power source 2, and the power battery 10 can charge the power battery 10 by using the external power source 2, so that the residual capacity of the power battery 10 is gradually increased along with the charging. Accordingly, the remaining power of the power battery 10 gradually increases with the charging to be greater than or equal to the preset power, and the heating device 20 starts the temperature control module 2011. At this time, the heating device 20 heats the power battery 10 again, so that the drivability of the electric vehicle 1 in the next trip can be improved without affecting the driving range of the electric vehicle 1.

Accordingly, the heating device 20 turns on or off the temperature control module 2011 according to the historical driving information of the electric vehicle 1, the remaining capacity of the power battery 10, and the connection state between the power battery 10 and the external power source 2, so that the driving mileage and the driving performance of the electric vehicle 1 can be considered.

In one embodiment, the heating device 20, the controller 201 or the identification module 2012 is configured to turn on or turn off the temperature control module 2011 according to the historical driving information and the connection status of the power battery 10 and the external power source 2.

Illustratively, the heating device 20 is configured to, in response to that the distance parameter is greater than or equal to the preset distance parameter value or the duration parameter is greater than or equal to the corresponding preset duration parameter in the historical driving information of the electric vehicle 1, and the power battery 10 is connected to the external power source 2, turn on the temperature control module 2011 by the heating device 20.

It can be understood that, in the historical driving information of the electric vehicle 1, the distance parameter is greater than or equal to the preset distance parameter value or the duration parameter is greater than or equal to the corresponding preset duration parameter, and the power battery 10 is required to provide more electric quantity for the next or future trips of the electric vehicle 1. The power battery 10 is connected with the external power source 2, and the power battery 10 can charge the power battery 10 by using the external power source 2. Accordingly, the heating device 20 turns on the temperature control module 2011. When the cell temperature of the power battery 10 is lower than the preset temperature, the heating device 20 heats the power battery 10 to raise the temperature of the power battery 10, so as to improve the drivability of the electric vehicle 1. Furthermore, the power battery 10 can be charged by the external power supply 2 without reducing the driving range of the electric vehicle 1.

Illustratively, the heating device 20 is configured to, in response to that the distance parameter is greater than or equal to the preset distance parameter value or the duration parameter is greater than or equal to the corresponding preset duration parameter in the historical driving information of the electric vehicle 1, and the power battery 10 is not connected to the external power source 2, turn on the temperature control module 2011 by the heating device 20.

It can be understood that, in the historical driving information of the electric vehicle 1, the distance parameter is greater than or equal to the preset distance parameter value or the duration parameter is greater than or equal to the corresponding preset duration parameter, and the next or future trips of the electric vehicle 1 require the power battery 10 to provide more electric quantity. The power battery 10 is not connected to the external power supply 2, and the power battery 10 cannot be charged by the external power supply 2. Accordingly, heating device 20 turns off thermal control module 2011. When the core temperature of the power battery 10 is lower than the preset temperature, the heating device 20 does not heat the power battery 10 to avoid the electric quantity loss of the power battery 10, thereby avoiding the reduction of the driving mileage of the electric vehicle 1.

Illustratively, the heating device 20 is configured to turn off the temperature control module 2011 in response to the speed parameter being less than or equal to the preset speed parameter value or the acceleration parameter being less than or equal to the preset acceleration parameter value in the historical driving information of the electric vehicle 1 and the power battery 10 being not connected to the external power source 2.

It is understood that the speed parameter is less than or equal to the preset speed parameter value or the acceleration parameter is less than or equal to the preset acceleration parameter value in the historical driving information of the electric vehicle 1, the power demand of the power battery 10 for the next or future trips of the electric vehicle 1 is small, and the driving experience of the electric vehicle 1 is not affected by not heating the power battery 10. The power battery 10 is not connected to the external power source 2, and the power battery 10 cannot be charged by the external power source 2. Accordingly, heating device 20 turns off thermal control module 2011. When the core temperature of the power battery 10 is lower than the preset temperature, the heating device 20 does not heat the power battery 10, thereby avoiding the power loss of the power battery 10, and further avoiding influencing the driving mileage of the electric vehicle 1 and not influencing the driving experience of the electric vehicle 1.

Illustratively, the heating device 20 is configured to turn on the temperature control module 2011 in response to the acceleration parameter or the speed parameter in the historical driving information of the electric vehicle 1 being greater than or equal to the corresponding preset parameter value and the power battery 10 being connected with the external power source 2.

It is understood that, if the acceleration parameter is greater than or equal to the preset acceleration parameter or the speed parameter is greater than or equal to the corresponding preset speed parameter in the historical driving information of the electric vehicle 1, the power demand of the power battery 10 is greater for the next or future trips of the electric vehicle 1. The power battery 10 is connected with the external power source 2, and the power battery 10 can charge the power battery 10 by using the external power source 2. Accordingly, the heating apparatus 20 turns on the temperature control module 2011. When the cell temperature of the power battery 10 is lower than the preset temperature, the heating device 20 heats the power battery 10 to raise the temperature of the power battery 10, so as to improve the drivability of the electric vehicle 1. Furthermore, the power battery 10 can be charged by the external power supply 2 without reducing the driving range of the electric vehicle 1.

In one embodiment, the heating device 20, the controller 201 or the identification module 2012 is configured to turn on or turn off the temperature control module 2011 according to the current battery requirement information of the electric vehicle 1 and the connection status of the power battery 10 and the external power source 2.

Illustratively, the heating device 20 is configured to turn on the temperature control module 2011 in response to the power demand value being greater than or equal to the preset power demand value in the current battery demand information of the electric vehicle 1 and the power battery 10 being connected to the external power supply 2.

It is understood that the cell temperature of the power battery 10 needs to be raised when the power demand value in the current battery demand information of the electric vehicle 1 is greater than or equal to the preset power demand value. The power battery 10 is connected with the external power source 2, and the power battery 10 can charge the power battery 10 by using the external power source 2. Accordingly, the heating apparatus 20 turns on the temperature control module 2011. When the cell temperature of the power battery 10 is lower than the preset temperature, the heating device 20 heats the power battery 10 to raise the temperature of the power battery 10, so as to improve the drivability of the electric vehicle 1. Furthermore, the power battery 10 can be charged by the external power supply 2 without reducing the driving range of the electric vehicle 1.

Illustratively, the heating device 20 is configured to turn off the temperature control module 2011 in response to the power demand value being greater than or equal to the preset power demand value in the current battery demand information of the electric vehicle 1 and the power battery 10 being disconnected from the external power supply 2.

It is understood that the amount of power required in the current battery demand information of the electric vehicle 1 is greater than or equal to the preset amount of power required, and the remaining amount of power of the power battery 10 is required to reduce the loss. The power battery 10 is not connected to the external power source 2, and the power battery 10 cannot be charged by the external power source 2. Accordingly, the heating device 20 turns off the temperature control module 2011. When the core temperature of the power battery 10 is lower than the preset temperature, the heating device 20 does not heat the power battery 10, so that the loss of the power battery 10 is reduced, and the driving mileage of the electric vehicle 1 is increased.

In one embodiment, the heating device 20, the controller 201 or the identification module 2012 is configured to turn on or off the temperature control module 2011 according to the power demand value and the power demand value in the current battery demand information of the electric vehicle 1 and the remaining power of the power battery 10.

Illustratively, the heating device 20 is configured to turn on the temperature control module 2011 in response to the power demand value being greater than or equal to the preset power demand value and the power demand value being less than the preset power demand value in the current battery demand information, and the remaining power of the power battery 10 being greater than the preset power.

It is understood that the power demand value is greater than or equal to the preset power demand value and the power demand value is less than the preset power demand value in the current battery demand information of the electric vehicle 1, and the next or future trips of the electric vehicle 1 require a large amount of power but a small amount of power supplied from the power battery 10. The remaining capacity of the power battery 10 is greater than the predetermined capacity, and the remaining capacity of the power battery 10 is greater. Accordingly, the heating device 20 turns on the temperature control module 2011. When the electric core temperature of power battery 10 is less than the preset temperature, heating device 20 heats power battery 10 and then promotes electric vehicle 1's driving experience, and electric vehicle 1 next time or future many times of journey is lower to power battery 10's electric quantity demand moreover, and the electric quantity loss that heats power battery 10 and cause can not influence electric vehicle 1 next time or the continuation of the journey mileage of future many times of journey yet.

Illustratively, the heating device 20 is configured to turn off the temperature control module 2011 in response to the power demand value being less than the preset power demand value, the power demand value being greater than or equal to the preset power demand value, and the remaining power of the power battery 10 being less than the preset power amount in the current battery demand information of the electric vehicle 1.

It is understood that the power demand of the electric vehicle 1 is smaller than the preset power demand, and the power demand of the power battery 10 is smaller for the next or future trips of the electric vehicle 1. The electric vehicle 1 has a power demand value greater than or equal to a preset power demand value, and the electric vehicle 1 has a smaller power demand on the power battery 10 for the next or future trips. The remaining capacity of the power battery 10 is less than the preset capacity, and the remaining capacity of the power battery 10 needs to reduce loss for satisfying the demand of the next trip of the electric vehicle 1. Accordingly, the heating device 20 turns off the temperature control module 2011. When the core temperature of the power battery 10 is lower than the preset temperature, the heating device 20 does not heat the power battery 10 to avoid the power loss of the power battery 10, so that the driving mileage of the electric vehicle 1 is increased, and the driving experience of the next trip of the electric vehicle 1 is not influenced.

In the embodiment of the present application, the controller 201 is further configured to obtain a heating instruction of the driver. Wherein the heating instruction is used to control the heating device 20 to heat the power cell 10. Illustratively, the navigation device 50 is a car machine, and the user interface may be a display screen of the car machine. The user may enter a heating instruction through the display screen interface of the navigation device 50. The controller 201 is configured to respond to a heating instruction, and the heating device 20 heats the power cell 10.

The heating device 20 and the controller 201 thereof, the electric vehicle 1 provided in the embodiment of the application can determine whether the electric core temperature of the power battery 10 is too low to heat the power battery 10 according to at least one of the historical driving information of the electric vehicle 1, the current battery demand of the electric vehicle 1, the residual capacity of the power battery 10, and the connection state of the power battery 10 and the external power supply 2, thereby reducing the loss of the residual capacity of the power battery 10 caused by heating, and further taking into account the cruising range and the driving performance of the electric vehicle 1.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. The heating device for the power battery of the electric vehicle is characterized in that the electric vehicle comprises a vehicle-mounted charger, a battery management system, the power battery and the heating device, the heating device comprises a temperature control module and a heater, the temperature control module is used for controlling the heater to heat the power battery according to a comparison result of the battery core temperature of the power battery and a preset temperature, and the heating device is used for:

acquiring current battery demand information of the electric vehicle;

acquiring the connection state of the power battery and an external power supply from the vehicle-mounted charger;

acquiring the residual capacity of the power battery from the battery management system;

and opening or closing the temperature control module according to the current battery demand information, the residual electric quantity and the connection state.

2. The heating device of claim 1, wherein the heating device is configured to:

and responding to the comparison result of the current battery demand information and a preset demand value, the comparison result of the residual electric quantity and a preset electric quantity and the connection state of the power battery and the external power supply, and turning on or off the temperature control module.

3. The heating apparatus according to any one of claims 1 to 2, wherein the current battery demand information includes at least one of a power demand value or a power demand value, and the preset demand value includes at least one of a preset power demand value or a preset power demand value, the heating apparatus being configured to:

responding to the current battery demand information that the electric quantity demand value is larger than or equal to a preset electric quantity demand value, the residual electric quantity is larger than or equal to a preset electric quantity, and the power battery is connected with the external power supply, and starting the temperature control module;

and closing the temperature control module in response to that the power demand value in the current battery demand information is smaller than a preset power demand value, the residual capacity is smaller than or equal to a preset capacity, and the power battery is not connected with the external power supply.

4. The heating device according to any one of claims 1 to 3, wherein the heating device is configured to acquire the current battery demand information from a navigation device associated with the electric vehicle, or the heating device is configured to acquire the current battery demand information from historical driving information received from the navigation device associated with the electric vehicle;

wherein the historical driving information includes at least one of a speed parameter, a road condition parameter, a distance parameter, a duration parameter, an acceleration parameter, or a congestion parameter of one or more trips of the electric vehicle.

5. The heating device of claim 4, wherein the heating device is configured to:

responding to a comparison result of at least one of a distance parameter, a duration parameter or a road condition parameter in the historical driving information and a corresponding preset parameter value, and outputting the preset electric quantity demand value;

and outputting the preset power demand value in response to a comparison result of at least one of a speed parameter, an acceleration parameter or a congestion parameter in the historical driving information and a corresponding preset parameter value.

6. A heating device as claimed in claim 5, characterized in that the preset power demand values comprise a first preset power demand value and a second preset power demand value, the heating device being configured to:

outputting the first preset power demand value in response to at least one of the speed parameter or the acceleration parameter being greater than a corresponding preset parameter value;

and outputting the second preset power demand value in response to at least one of the speed parameter or the acceleration parameter being less than or equal to the corresponding preset parameter value.

7. A heating device as claimed in claim 5, characterized in that the preset power demand value comprises a first preset power demand value and a second preset power demand value, the heating device being configured to:

responding to at least one of the distance parameter or the duration parameter being greater than or equal to a corresponding preset parameter value, and outputting the first preset electric quantity demand value;

and outputting the second preset electric quantity demand value in response to at least one of the distance parameter or the duration parameter being smaller than a corresponding preset parameter value.

8. The controller of the power battery heating device of the electric vehicle is characterized in that the electric vehicle comprises a vehicle-mounted charger, a battery management system, the power battery and the heating device, the heating device comprises a heater and the controller, the heater is used for heating the power battery, and the controller comprises:

the communication module is used for receiving the cell temperature of the power battery from the battery management system, receiving the connection state of the power battery and an external power supply from the vehicle-mounted charger, and receiving the residual electric quantity of the power battery from the battery management system;

the temperature control module is used for responding to the situation that the battery core temperature is lower than a preset temperature to control the heater to heat the power battery;

and the identification module is used for opening or closing the temperature control module according to the residual electric quantity and the connection state.

9. The controller of claim 8, wherein the identification module is configured to:

in response to the fact that the residual electric quantity is smaller than the preset electric quantity and the power battery is not connected with the external power supply, closing the temperature control module;

and responding to the situation that the residual electric quantity is larger than or equal to the preset electric quantity and the power battery is connected with the external power supply, and starting the temperature control module.

10. The controller according to any one of claims 8-9, wherein the identification module is configured to:

receiving historical driving information of the electric vehicle from a navigation device associated with the electric vehicle;

and opening or closing the temperature control module according to the historical driving information, the residual electric quantity and the connection state.

11. The controller of the power battery heating device of the electric vehicle is characterized in that the electric vehicle comprises a vehicle-mounted charger, a battery management system, the power battery and the heating device, the heating device comprises a heater and the controller, the heater is used for heating the power battery, and the controller comprises:

the communication module is used for receiving at least one of the connection state of the power battery and an external power supply from the vehicle-mounted charger or the residual electric quantity of the power battery from the battery management system;

the temperature control module is used for receiving the cell temperature of the power battery from the battery management system and controlling the heater to heat the power battery in response to the cell temperature of the power battery being lower than a preset temperature;

and the identification module is used for acquiring historical driving information or current battery demand information of the electric vehicle and starting or closing the temperature control module according to at least one of the residual electric quantity, the connection state, the historical driving information or the current battery demand information.

12. The controller of claim 11, wherein the identification module is configured to:

responding to the fact that the distance parameter or the duration parameter in the historical driving information is smaller than a corresponding preset parameter value, the residual electric quantity is larger than or equal to a preset electric quantity, and the power battery is connected with the external power supply, and starting the temperature control module;

and in response to the fact that the distance parameter or the duration parameter in the historical driving information is larger than or equal to a corresponding preset parameter value, the residual electric quantity is smaller than a preset electric quantity, and the power battery is not connected with the external power supply, closing the temperature control module.

13. The controller of claim 11, wherein the identification module is configured to:

responding to the power demand value is larger than or equal to a preset power demand value, the electric quantity demand value is smaller than a preset electric quantity demand value, and the residual electric quantity is larger than or equal to a preset electric quantity, and starting the temperature control module;

and closing the temperature control module in response to the power demand value being less than a preset power demand value, the power demand value being greater than or equal to the preset power demand value, and the residual power being less than a preset power.

14. The controller of claim 11, wherein the identification module is configured to:

and responding to a comparison result of one parameter in the historical driving information and a corresponding preset parameter value, and starting or closing the temperature control module.

15. An electric vehicle, characterized in that the electric vehicle comprises:

a power battery, an on-board charging system, a battery management system and a heating device according to any one of claims 1 to 7; or,

a power battery, an onboard charging system, a battery management system and a heating device comprising a heater and a controller according to any of claims 8 to 12.