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

Abstract

The present application provides a heating device for a power battery of an electric vehicle and related equipment. The heating device includes a temperature control module and a heater. The temperature control module is used to control the heater to heat the power battery according to the comparison result between the cell temperature of the power battery and the preset temperature. The heating device can obtain the connection status of the power battery and the external power supply from the on-board charger, and obtain the cell temperature and remaining power of the power battery from the battery management system. The heating device turns on or off the temperature control module according to the current battery demand information, remaining power and connection status, so as to take into account the driving performance and cruising range of electric vehicles in low temperature environments.

Description

Electric vehicle power battery heating device and related equipment

technical field

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

Background technique

When the cell temperature of the power battery in an electric vehicle is low, the performance will be reduced. Usually, the power battery needs to be heated to increase the temperature of the cell, thereby improving the performance of the power battery, thereby improving the driving performance and driving experience of the electric vehicle. However, heating the traction battery will consume the remaining power of the traction battery, thereby reducing the cruising range of the electric vehicle.

Contents of the invention

The present application provides a heating device for a power battery of an electric vehicle and related equipment, which can take into account the cruising range and driving performance of the electric vehicle in a low temperature environment.

The following introduces the present application from different aspects, and it should be understood that the implementation manners and beneficial effects of the following different aspects can refer to each other.

In a first aspect, the present application provides a heating device for a power battery of an electric vehicle. Electric vehicles include on-board chargers, battery management systems, power batteries and heating devices. The heating device includes a temperature control module and a heater. The heater is used to heat the power battery. The temperature control module is used to receive the cell temperature of the power battery from the battery management system and control the heater to heat the power battery according to the comparison result between the cell temperature of the power battery and the preset temperature. The heating device is used to obtain the current battery demand information of the electric vehicle, receive the connection status of the power battery and the external power source from the on-board charger, and receive the remaining power of the power battery from the battery management system, and according to the current battery demand of the next trip of the electric vehicle Information, the remaining power of the power battery and the connection status of the power battery and the external power supply control the heater to turn on or turn off the temperature control module.

In this 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 value includes a preset electricity demand value and a preset power demand value.

In the embodiment of the present application, the heating device can not only control the heater to heat the power battery according to the comparison result between the cell temperature of the power battery and the preset temperature, but also can control the heating of the power battery according to the current battery demand information of the electric vehicle, the remaining power of the power battery, and The connection state between the power battery and the external power supply determines whether to control the heater to heat the power battery according to the comparison result of the cell temperature of the power battery and the preset temperature. Correspondingly, the heating device provided in the embodiment of the present application can not only improve the driving performance and driving experience of the electric vehicle by increasing the battery cell temperature of the power battery, but also reduce the power loss caused by unnecessary heating of the power battery to improve the performance of the electric vehicle. recharge mileage.

With reference to the first aspect, in a first possible implementation manner, the heating device is used to respond 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 comparison between the power battery and the external power supply. In the connected state, the heating device turns on or off the temperature control module.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner, the heating device is used to respond The power is set and the power battery is connected to the external power supply, and the heating device turns on the temperature control module. The heating device is used to turn off the temperature control module in response to the fact that the power demand value in the current battery demand information is less than the preset demand value, the remaining power is less than or equal to the preset power, and the power battery is not connected to the external power supply.

In this embodiment, the heating device is used to turn on or off the heating device accordingly 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 status between the power battery and the external power supply. control module. Correspondingly, the heating device provided in the embodiment of the present application can reduce power loss caused by unnecessary heating of the power battery, thereby increasing the cruising range 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 used to obtain current battery demand information from a navigation device associated with the electric vehicle, or , the heating device is used to obtain historical driving information from a navigation device associated with the electric vehicle. Wherein, the navigation device or the heating device is used to calculate the current battery demand according to the historical driving information, and the historical driving information includes at least one of the speed parameter, road condition parameter, distance parameter, duration parameter, acceleration parameter or congestion parameter in the history of the electric vehicle. .

In this embodiment, the heating device can 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 obtain historical driving information from the navigation device, and then quickly calculate the current battery demand based on the historical driving information, thereby improving the applicability of the heating device. Moreover, the heating device can continuously improve the accuracy of the current battery demand information based on 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 used to respond to at least one preset parameter value corresponding to the distance parameter, duration parameter or road condition parameter of the historical trip As a result of the comparison, the heating device outputs a preset electricity demand value. The heating device responds to a comparison result of at least one of the speed parameter, acceleration parameter or congestion parameter of the historical trip with its corresponding preset parameter value, and the heating device outputs a preset power demand value.

In this embodiment, the heating device is used to calculate the preset power demand value or the preset power demand value according to one or more of the multiple types of parameters of the historical trip, thereby improving the accuracy of the current battery demand and reducing unnecessary power batteries The power loss caused by heating increases the cruising range of the electric vehicle and improves the applicability of the heating device to various scenarios.

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 power preset demand value, and the heating device is used to respond to The speed parameter is greater than the preset speed parameter value, and a first preset power demand value is output. The heating device is used for outputting a second preset power demand value in response to the speed parameter being less than or equal to the preset speed parameter value.

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

With reference to the third possible implementation manner of the first aspect, in a sixth possible implementation manner, the preset power demand value includes a first preset power demand value and a second power preset demand value, and the heating device is used to respond to The distance parameter is greater than or equal to the preset distance parameter value, and the first power preset demand value is output. The heating device is used for outputting a second power preset demand value in response to the distance parameter being smaller than the preset distance parameter 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, the heating device can calculate the power demand or power demand according to the comparison results of various parameters of the historical trip and the corresponding preset parameter values, thereby improving the accuracy of the current battery demand and reducing unnecessary heating of the power battery The resulting power loss improves the cruising range of the electric vehicle and improves the applicability of the heating device to various scenarios.

In a second aspect, the present application provides a controller for a heating device for a power battery of an electric vehicle. Among them, electric vehicles include on-board chargers, battery management systems, power batteries and heating devices. The heating device includes a heater and a controller. The heater is used to heat the power battery. The controller includes a communication module, a temperature control module and an identification module. The communication module is used to obtain the cell temperature of the power battery from the battery management system, obtain the connection status of the power battery and the external power supply from the on-board charger, and obtain the remaining power of the power battery from the battery management system. The temperature control module is used to control the heater to heat the power battery in response to the battery core temperature being lower than the preset temperature. The identification module is used to turn on or turn off the temperature control module according to the remaining power of the power battery and the connection status of the power battery and the external power supply.

The controller provided in this embodiment can correspondingly turn on or off the temperature 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 status between the power battery and the external power supply. control module. Correspondingly, when the temperature control module in the controller provided in the embodiment of the present application is turned on, the power battery can be heated to improve the drivability and driving experience of the electric vehicle, and when the temperature control module in the controller is turned off, unnecessary power battery heating can be reduced. The power consumption increases the cruising range of the electric vehicle and improves the applicability of the heating device to various scenarios.

With reference to the second aspect, in a first possible implementation manner, the identification module is used to turn on the temperature control module in response to the remaining power being less than the preset power and the power battery is not connected to the external power supply. The identification module is used to turn on the temperature control module in response to the remaining power being greater than or equal to the preset power and the power battery is connected to the external power supply. In this embodiment, the identification module can control the temperature control module to be turned on or off according to various scenarios. When the temperature control module is turned on, it can heat the power battery to improve the driving and driving experience of the electric vehicle. When the temperature control module is turned off, it can reduce the power loss caused by unnecessary heating of the power battery, thereby increasing the cruising range of the electric vehicle, and improving the heating device. Applicability to various scenarios.

In a third aspect, the present application provides a controller for a heating device for a power battery of an electric vehicle. Electric vehicles include on-board chargers, battery management systems, power batteries and heating devices. The heating device includes a heater and a controller. The heater is used to heat the power battery. The controller includes a communication module, a temperature control module and an identification module. The communication module is used to obtain the connection status of the power battery and the external power supply from the on-board charger or obtain the remaining power of the power battery from the battery management system. The temperature control module is used to obtain the cell temperature of the power battery from the battery management system, and control 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 to obtain historical driving information or current battery demand information of the electric vehicle, and is used to turn on or close the temperature control module according to at least one of remaining power, connection status, current battery demand information or historical driving information.

The controller provided in this embodiment can correspondingly turn on or turn off the temperature control module of the heating device according to at least one of remaining power, connection status, current battery demand information or historical driving information. Correspondingly, the controller provided in the embodiment of the present application can not only heat the power battery to improve the driving and driving experience of the electric vehicle, but also reduce the power loss caused by unnecessary heating of the power battery to increase the cruising range of the electric vehicle and improve the driving experience of the electric vehicle. The applicability of the heating device to various scenarios is shown.

With reference to the third aspect, in a first possible implementation manner, the identification module is configured to respond to the fact that the distance parameter or duration parameter in the historical driving information is less than the corresponding preset parameter value, and the remaining power is greater than or equal to the preset power, and the power The battery is connected with the external power supply, and the identification module turns on the temperature control module. The identification module is used to close the temperature control module in response to the distance parameter or duration parameter in the historical driving information being greater than or equal to the corresponding preset parameter value, and the remaining power is less than the preset power, and the power battery is not connected to the external power supply.

In this embodiment, the distance parameter or the duration parameter in the historical driving information is less than the corresponding preset parameter value, and the power demand value of the electric vehicle is relatively small. The power battery has a lot of remaining power, which can be used to heat the power battery to improve the driving performance of the electric vehicle. Moreover, the power battery is connected with an external power source so that the power loss of the power battery can be replenished in time. Correspondingly, the identification module turns on the temperature control module, thereby improving the driving and driving experience of the electric vehicle. When the power demand value of the electric vehicle is large and the remaining power of the power battery is small, it is necessary to reduce the power loss of the power battery, and the power battery is not connected to an external power source so that the power battery cannot be charged, so it is necessary to avoid power loss caused by heating the power battery. Correspondingly, the identification module turns off the temperature control module to avoid heating the power battery to save power and increase the actual cruising range of the electric vehicle.

With reference to the third aspect, in a second possible implementation manner, the identification module is configured to respond 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, and the remaining power being greater than or equal to The power is preset, and the identification module turns on the temperature control module. The identification module is used to turn off the temperature control module 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 being less than the preset power value.

In this embodiment, when the power demand value of the electric vehicle is large, it is necessary to heat the power battery to increase the rated power of the power battery. When the power is greater than or equal to the preset power, the power battery has more power to meet the needs of the next trip of the electric vehicle. Correspondingly, the identification module turns on the temperature control module, thereby improving the driving and driving experience of the electric vehicle. When the power demand value of the electric vehicle is small, the rated power requirement of the power battery is low. When the power demand value of the electric vehicle is greater than the preset power demand value, the distance of the next trip of the electric vehicle is longer, and the remaining power is less than the preset power battery. The power of the battery is less, so it is necessary to avoid heating the power battery to save the power of the power battery. Correspondingly, the identification module turns off the temperature control module, thereby increasing the actual cruising range of the electric vehicle.

With reference to the third aspect, in a third possible implementation manner, the identification module is configured to enable or disable the temperature control module in response to a comparison result between a parameter in the historical driving information and its corresponding preset parameter value.

The controller provided in this embodiment can correspondingly determine the power demand value or electric quantity demand value of the electric vehicle according to the comparison result of a parameter in the historical driving information and its corresponding preset parameter value. Correspondingly, the identification module turns on the temperature control module when it determines that the power demand value of the electric vehicle is low according to a parameter in the historical driving information, thereby improving the drivability and driving experience of the electric vehicle. According to a parameter in the historical driving information, the identification module determines that the power demand value of the electric vehicle is high, and the temperature control module is turned off to avoid heating the power battery to save power and increase the actual cruising range of the electric vehicle.

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

It can be understood that the electric vehicle heating device provided in the embodiment of the present application can heat or not heat the power battery according to one or more factors in the current battery demand information, remaining power, connection status of the power battery and the external power supply, Thus taking into account the cruising range and driving performance of electric vehicles in low temperature environment.

Description of drawings

Fig. 1 is a schematic diagram 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 the electric vehicle provided by the embodiment of the present application;

Fig. 4 is another schematic diagram of the electric vehicle provided by the embodiment of the present application.

Detailed ways

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

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

In a low temperature environment, the temperature of the cells 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 will be reduced, thereby affecting the drivability of the electric vehicle 1 . The controller 201 controls the heater 200 to heat the power battery 10 in response to the battery cell temperature of the power battery 10 being too low. The heating of the power battery 10 by the heater 200 can gradually increase the temperature of the cells of the power battery 10 , thereby improving the performance of the power battery 10 and further improving the drivability of the electric vehicle 1 .

Although, heating the power battery 10 by the heater 200 can improve the performance of the power battery 10 . However, the heating of the power battery 10 by the heater 200 needs to be powered by the power battery 10 , which leads to a reduction in the remaining power of the thermal power battery 10 , and further reduces the cruising range of the electric vehicle 1 .

Therefore, the heating of the cell temperature of the power battery 10 needs to consider not only the drivability of the electric vehicle 1 , but also the cruising range of the electric vehicle 1 .

In order to solve the above technical problems, the embodiment of the present application provides a heating device for the power battery of an electric vehicle and its controller, and the electric vehicle. According to the historical driving information of the electric vehicle 1, the current battery demand and power One or more of the remaining power of the battery 10 and the connection state between the power battery 10 and the external power supply determine whether to heat the power battery 10 when the cell temperature of the power battery 10 is too low, thereby taking into account the cruising range and driving of the electric vehicle 1 performance.

Fig. 2 is a schematic diagram of an electric vehicle provided by 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 with 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 used to receive power from the power battery 10 or the external power source 2 and generate heat for heating the power battery 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 grid.

In the embodiment of the present application, the heating device 20 may include one or more heat-generating or heat-conducting devices such as a driving motor, a cooling system, a charging device or a thermal circuit in the electric vehicle 1 . In the embodiment of the present application, the heater 200 includes at least one of a positive temperature coefficient (positive temperature coefficient, PTC) heater or a driving motor. Wherein, the PTC heater is used to transmit 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 is transferred to the power battery 10 through the thermal circuit 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 used for controlling the heater 200 to heat the power battery 10 in response to the cell temperature of the power battery 10 being lower than a preset temperature. In the embodiment of the present application, the controller 201 or the heating device 20 can turn on or turn off the temperature control module 2011 .

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

Exemplarily, the heating device 20 or the controller 201 turns off the temperature control module 2011 . The cell temperature of the power battery 10 is lower than the preset temperature, and the temperature control module 2011 will 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 model of the power battery 10 . Exemplarily, the preset temperature is greater than or equal to -20°C and less than or equal to 10°C. Exemplarily, the preset temperature may be 5°C.

In the embodiment of the present application, the controller 201 includes a vehicle controller (vehic le control l un it, VCU), a domain controller (domain control ler unit, DCU), a motor controller (moter control l un it, At least one of MCU), control board or control chip. In one embodiment, the controller 201 is arranged inside or outside the electric vehicle 1 . That is to say, the controller 201 can also be used to control other functional modules such as a driving motor, a cooling system or a charging device of the electric vehicle 1 . In an embodiment, the controller 201 may also be arranged 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 on-board charger 30 is used to receive power from the external power supply 2 and charge the power battery 10 , and is used to provide the controller 201 with the connection status between the power battery 10 and the external power supply 2 . Correspondingly, the controller 201 is used to obtain the connection status of the power battery 10 and the external power source 2 from the on-board charger 30 . In the embodiment of the present application, the connection status signal is used to indicate the connection status between the power battery 10 and the external power source 2 . Specifically, the controller 201 is used to acquire the connection status between the power battery 10 and the external power source 2 according to the connection status signal output by the vehicle charger 30 .

Exemplarily, the on-board charger 30 is provided with a gun insertion detection module. The gun insertion detection module is used to detect the connection state between the power battery 10 and the external power supply 2 and output a connection state signal. The connection state signal includes at least one of a connection confirm (connection confirm, CC) signal, a control pilot (control pilot, CP) signal, a wake-up signal of the electric vehicle 1 or a pistol signal provided by the controller 201 . The charging port of the electric vehicle 1 is plugged with the charging gun of the external power supply 2 , and the plug-in detection module of the on-board 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 port of the electric vehicle 1 is not plugged into the charging gun of the external power supply 2 , and the plug-in detection module of the on-board 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 used to detect battery parameters of the power battery 10 . The battery parameters include at least one of battery cell temperature or state of charge (SOC).

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

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

Exemplarily, the battery management system 40 includes a temperature detection module. The temperature detection module is used to detect the cell temperature of the power battery 10 . In the 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 resistance temperature sensor or an IC temperature sensor. The temperature detection module of the battery management system 40 outputs a battery temperature signal. Wherein, 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 used to obtain the cell temperature of the power battery 10 according to the cell temperature signal.

Exemplarily, the battery management system 40 includes a power detection module. The power detection module is used to detect 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 power signal is used to indicate the remaining power of the power battery 10 . The controller 201 is used for obtaining the remaining power of the power battery 10 according to the remaining power signal.

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

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

Exemplarily, the heating device 20 is used 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 power of the power battery 10 is greater than or equal to the preset power, then the remaining power of the power battery 10 is larger, and the heating device 20 turns on the temperature control module 2011 . Correspondingly, the heater 200 can use the power supplied by the power battery 10 to heat the power battery 10 , thereby increasing the temperature of the power battery 10 , thereby improving the drivability of the electric vehicle 1 and having little impact on the cruising range of the electric vehicle 1 .

Exemplarily, the heating device 20 is used to turn off the temperature control module 2011 in response to the remaining power of the power battery 10 being less than a preset power. It can be understood that if the remaining power of the power battery 10 is less than the preset power, then the remaining power of the power battery 10 is less, and the heating device 20 turns off the temperature control module 2011 . Correspondingly, the heater 200 does not heat the power battery 10 so as to reduce the power loss of the power battery 10 , thereby avoiding affecting the cruising range of the electric vehicle 1 .

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

Exemplarily, the power battery 10 is connected to the external power source 2 . The heating device 20 is used to turn on the temperature control module 2011 in response to the power battery 10 being connected to the external power source 2 . It can be understood that when the power battery 10 is connected to the external power supply 2 , the heater 200 can use the power supplied by the power battery 10 to heat the power battery 10 , thereby increasing the temperature of the power battery 10 and further improving the drivability of the electric vehicle 1 . In addition, the power battery 10 can be charged by the external power source 2 after the electricity is reduced, so as to avoid affecting the cruising range of the electric vehicle 1 .

The power battery 10 is not connected to the external power supply 2 . The heating device 20 responds that the power battery 10 is not connected to the external power source 2 , and 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 supply 2, the heater 200 heating the power battery 10 will reduce the remaining power of the power battery 10 and cannot be charged by the external power supply 2, and the heating device 20 can turn off the temperature control module 2011 to reduce power. The power loss of the battery 10 can further avoid affecting the cruising range of the electric vehicle 1 .

In one embodiment, the heating device 20 is used to turn on or turn off the temperature control module 2011 in response to the comparison result between the remaining power of the power battery 10 and the preset power and the connection status of the power battery 10 and the external power source 2 . The heating device 20 is used to turn on or off the temperature control module 2011 in response to the comparison result between the remaining power of the power battery 10 and the preset power and the connection status between the power battery 10 and the external power source 2, which can take into account the drivability and cruising range of the electric vehicle 1 .

Exemplarily, the remaining power of the power battery 10 is greater than or equal to a 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 in response to the remaining power of the power battery 10 being greater than or equal to a preset power and the power battery 10 is connected to the external power source 2 . It can be understood that the power battery 10 has a large amount of remaining power and can be charged by the external power supply 2 at any time, and the heater 200 can use the power supplied by the power battery 10 to heat the power battery 10, thereby increasing the temperature of the power battery 10, thereby improving the electric vehicle 1 driving performance.

Exemplarily, 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 in response to the remaining power of the power battery 10 being less than the preset power and the power battery 10 is connected to the external power source 2 . Correspondingly, 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 power of the power battery 10 increases. Subsequently, the remaining power of the power battery 10 increases to be greater than or equal to the preset power. The heating device 20 turns on the temperature control module 2011 .

It can be understood that when the remaining power of the power battery 10 is low and can be charged by the external power source 2 , the heater 200 directly heating the power battery 10 will further reduce the remaining power of the power battery 10 . At this time, if the user needs to drive the electric vehicle 1 , the cruising range of the electric vehicle 1 will decrease. Correspondingly, the heating device 20 turns off the temperature control module 2011 to avoid heating the power battery 10 and reducing the cruising range of the electric vehicle 1 . As the power battery 10 is charged by the external power source 2, the remaining power 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 without affecting the battery life of the electric vehicle 1 mileage.

Exemplarily, the remaining power of the power battery 10 is greater than or equal to the preset 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 in response to the remaining power of the power battery 10 being greater than the preset power and the power battery 10 is not connected to the external power source 2 . It can be understood that when the remaining power of the power battery 10 is large, the heater 200 can use the power supplied by the power battery 10 to heat the power battery 10, thereby increasing the temperature of the power battery 10, thereby improving the drivability of the electric vehicle 1 and affecting the electric vehicle 1. The cruising range is less affected.

Exemplarily, 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 . When the heating device 20 responds 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 can be understood that when the remaining power of the power battery 10 is low, heating the power battery 10 by the heater 200 will further reduce the cruising range of the electric vehicle 1 . Correspondingly, the heating device 20 turns off the temperature control module 2011 , thereby increasing the cruising range of the electric vehicle 1 .

Referring to FIG. 3 , FIG. 3 is another schematic diagram of the 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 driving of the electric vehicle 1 , the navigation device 50 continuously acquires driving information of the electric vehicle 1 . Before the controller 201 controls the heater 200 to heat the power battery 10 , the navigation device 50 continuously obtains driving information of the electric vehicle 1 . Compared with the controller 201, the driving information acquired by the navigation device 50 is historical driving information.

In the embodiment of the present application, the historical driving information includes at least one of the speed parameter, road condition parameter, distance parameter, duration parameter, acceleration parameter or 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 a car machine, a navigation system, a telematics-box (T-Box), a central control, or a terminal loaded with remote application software (app lication, APP). at least one of . In one embodiment, the navigation device 50 is disposed inside the electric vehicle 1 . That is, the electric vehicle 1 includes the navigation device 50 . In one embodiment, the navigation device 50 may 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 the historical driving information of the electric vehicle 1 . Correspondingly, 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 used to acquire 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 used 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 . Correspondingly, the controller 201 is used 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 used to acquire the current battery demand information of the electric vehicle 1 from the navigation device 50 .

In this embodiment of the present application, the current battery demand information includes at least one of a power demand value or a power demand value. In the 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 electricity 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 in the controller 201 . In one embodiment, the preset electricity demand value or preset power demand value may be a parameter set by the 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 an electric power demand value according to a comparison result of at least one of the distance parameter, duration parameter or road condition parameter of the historical trip with its 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 the distance parameter, duration parameter or road condition parameter of the historical trip with its 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 the speed parameter, the acceleration parameter or the congestion parameter of the historical trip and its 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 the speed parameter, acceleration parameter or congestion parameter of the historical trip with its corresponding preset parameter value.

In this embodiment of the present application, the preset parameter value may be a parameter set by the 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.

Exemplarily, the speed parameter includes at least one of a maximum vehicle speed, an average vehicle speed, a maximum vehicle speed within a preset period, or an average vehicle speed within a preset period. It can be understood that the higher the speed of the electric vehicle 1 is, the greater the rated power of the power battery 10 is required. Therefore, the speed parameter can be used to represent the maximum rated power of the power battery 10 required by the electric vehicle 1 in one or more historical trips. Correspondingly, according to the speed parameter in the historical driving information, it can be obtained that the power demand of the electric vehicle 1 on the battery in the next trip or multiple trips in the future is relatively large.

Exemplarily, the controller 201 or the navigation device 50 responds to the speed parameter in the historical driving information being greater than a preset speed parameter value, the controller 201 or the navigation device 50 outputs the first power demand value. In response to the controller 201 or the navigation device 50 responding that the speed parameter in the historical driving information is less than or equal to the preset speed parameter value, the controller 201 or the navigation device 50 outputs the second power demand value.

Exemplarily, the acceleration parameter includes at least one of acceleration, acceleration times, the highest acceleration within a preset period, or an average acceleration or acceleration times within a preset period. It can be understood that the faster the acceleration of the electric vehicle 1 or the greater the number of accelerations, the greater the instantaneous power required by the power battery 10 . Therefore, the acceleration parameter can be used to represent the maximum instantaneous power of the power battery 10 required by the electric vehicle 1 in one or more historical trips. Correspondingly, according to the acceleration parameters in the historical driving information, the power requirements of the electric vehicle 1 for the battery in the next or multiple trips in the future can be obtained.

Exemplarily, if the acceleration parameter in the historical driving information is greater than the preset acceleration parameter value, the controller 201 or the navigation device 50 outputs the first power demand value. If the acceleration parameter in the historical driving information is less than or equal to the preset acceleration parameter value, the controller 201 or the navigation device 50 outputs the second power demand value.

Exemplarily, the congestion parameter includes at least one of congestion, free flow, congestion conditions of multiple trips within a preset period, or average congestion conditions of multiple trips within a preset period. It can be understood that the higher the congestion situation, the lower the average speed of the electric vehicle 1 but the more battery power consumption. Therefore, the congestion parameter can be used to represent the greater rated power and/or greater power of the power battery 10 required by the electric vehicle 1 in one or more historical trips. Correspondingly, according to the congestion parameters in the historical driving information, the electricity demand of the electric vehicle 1 for the battery and/or the power demand of the battery in the next trip or multiple trips in the future can be obtained.

Exemplarily, if the congestion parameter in the historical driving information is greater than the preset congestion parameter value, the controller 201 or the navigation device 50 outputs at least one of the first power demand value or the first electricity 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.

Exemplarily, the distance parameter includes at least one of the longest single or round trip distance, or the average distance of multiple trips within a preset period. It can be understood that the longer the driving distance of the electric vehicle 1 is, the greater the power required by the power battery 10 is. Therefore, the distance parameter can be used to indicate the maximum power of the power battery 10 required by the electric vehicle 1 in one or more historical trips. Correspondingly, according to the distance parameter in the historical driving information, the power demand of the electric vehicle 1 for the battery in the next trip or multiple trips in the future can be obtained.

Exemplarily, when the distance parameter in the historical driving information is greater than or equal to the preset distance parameter value, the controller 201 or the navigation device 50 outputs the first power demand value. If the distance parameter in the historical driving information is less than the preset distance parameter value, the controller 201 or the navigation device 50 outputs the second power demand value.

Exemplarily, the duration parameter includes at least one of the longest single or round trip duration, or the average duration of multiple trips within a preset period. It can be understood that the longer the driving time of the electric vehicle 1 is, the more power the power battery 10 needs. Therefore, the duration parameter can be used to represent the maximum power of the power battery 10 required by the electric vehicle 1 in one or more historical trips. Correspondingly, according to the duration parameter in the historical driving information, the electricity demand of the electric vehicle 1 for the battery in the next trip or multiple trips in the future can be obtained.

Exemplarily, the duration parameter in the historical driving information is greater than or equal to the preset duration parameter value, and the controller 201 or the navigation device 50 outputs the first power demand value. If the duration parameter in the historical driving information is less than the preset duration parameter value, the controller 201 or the navigation device 50 outputs the second power demand value.

Exemplarily, the road condition parameter includes at least one of snow, off-road, high-speed, urban, or common road conditions for multiple trips within a preset period or average road conditions for multiple trips within a preset period. It can be understood that the more complicated the road conditions are, the greater the rated power and electric quantity of the power battery 10 are required. Therefore, the road condition parameter can be used to indicate the maximum rated power and electric quantity of the power battery 10 required by the electric vehicle 1 in one or more historical trips.

Correspondingly, according to the road condition parameters in the historical driving information, the electricity demand of the electric vehicle 1 for the battery and the power demand of the battery in the next trip or multiple trips in the future can be obtained. Exemplarily, if the road condition parameter in the historical driving information is greater than the preset road condition parameter value, the controller 201 or the navigation device 50 outputs at least one of the first power demand value or the first electricity 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 electricity demand value.

In the embodiment of the present application, the heating device 20 can turn on or turn off the temperature control module 2011 according to the comparison result of the current battery demand and the preset demand value. Correspondingly, the controller 201 of the heating device 20 turns on or turns off the temperature control module 2011 according to the comparison result between the current battery demand and the preset demand value. The identification module 2012 of the controller 201 turns on or turns off the temperature control module 2011 according to the comparison result of the current battery demand and the preset demand value.

Exemplarily, 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 turn on the temperature control module 2011 in response to the power demand value in the current battery demand information being smaller than the preset power demand value.

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

Exemplarily, 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 in the current battery demand information being less than the preset power demand value.

It can be understood that when the power demand value in the current battery demand information is relatively large, the rated power or instantaneous power of the power battery 10 needs to be increased. Therefore, the heating device 20 turns on the temperature control module 2011 , and the battery cell temperature of the power battery 10 is lower than the preset temperature to heat the power battery 10 to improve the driving performance of the electric vehicle 1 .

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

Exemplarily, 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 turn on the temperature control module 2011 in response to the distance parameter in the historical driving information being smaller than the preset distance parameter value or the duration parameter being smaller than the preset duration parameter value.

It can be understood that if the distance parameter in the historical driving information 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, the driving distance or driving duration of the next or future multiple trips of the electric vehicle 1 needs a power battery 10 provides more power. Therefore, in order to avoid affecting the cruising 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 heating device 20 turns off the temperature control module 2011, and avoids heating the power battery 10 when the cell temperature of the power battery 10 is lower than the preset temperature, so as to avoid further loss of the remaining power of the power battery 10, thereby avoiding affecting the electric vehicle 1 Range and driving experience for your next trip.

Exemplarily, the heating device 20 is configured to turn on the temperature control module 2011 in response to a speed parameter greater than or equal to a preset speed parameter value or an acceleration parameter greater than or equal to a 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 smaller than the preset speed parameter value or the acceleration parameter being smaller than the preset acceleration parameter value in the historical driving information.

It can be understood that if the speed parameter in the historical driving information 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, the electric vehicle 1 needs the power battery 10 to provide greater power in the next or multiple trips in the future. . Therefore, in order to improve the drivability of the electric vehicle 1 for the next trip, it is necessary to heat the power battery 10 so as to increase the rated power or instantaneous power of the power battery 10 . Correspondingly, the heating device 20 turns on the temperature control module 2011 , thereby heating the power battery 10 so as to improve the performance of the power battery 10 , thereby improving the drivability of the electric vehicle 1 .

Exemplarily, the heating device 20 is configured to turn on the temperature control module 2011 in response to a road condition parameter greater than or equal to a preset road condition parameter value or a congestion parameter greater than or equal to a preset congestion 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 road condition parameter in the historical driving information being smaller than the preset road condition parameter value or the congestion parameter being smaller than the preset congestion parameter value.

It can be understood that if the road condition parameter in the historical driving information 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, the electric vehicle 1 needs the power battery 10 to provide greater power in the next or multiple trips in the future. or more power. Therefore, in order to take into account the drivability and cruising range of the next trip of the electric vehicle 1 , the heating device 20 can correspondingly turn on or turn off the temperature control module 2011 .

Referring to FIG. 4 , FIG. 4 is another schematic diagram of the electric vehicle provided by the present application. As shown in FIG. 4 , the controller 201 in 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 used to connect the on-board charger 30 and the battery management system 40 respectively. The communication module 2010 of the controller 201 is used to obtain the connection status of the power battery 10 and the external power source 2 from the on-board charger 30 , and obtain the cell temperature of the power battery 10 and the remaining power 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 also used to connect with the navigation device 50 . In one embodiment, the communication module 2010 of the controller 201 is used to acquire historical driving information from the navigation device 50 . The recognition module 2012 of the controller 201 is used to obtain the current battery demand according to the historical driving information. In one embodiment, the communication module 2010 of the controller 201 is used to obtain the current battery requirement from the navigation device 50 .

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

In the embodiment of the present application, the temperature control module 2011 of the controller 201 is used 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 a preset temperature. In the embodiment of the present application, the temperature control module 2011 of the controller 201 can be turned on or off.

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

Exemplarily, the temperature control module 2011 of the controller 201 is turned off. The cell temperature of the power battery 10 is lower than the preset temperature, and the temperature control module 2011 will not control the heater 200 to heat the power battery 10 .

In the embodiment of the present application, the heating device 20 is used for one or more functions according to the remaining power of the power battery 10, the connection status of the power battery 10 and the external power source 2, the historical driving information of the electric vehicle 1 or the current battery demand of the electric vehicle 1. Turn on or off the temperature control module 2011. Correspondingly, the controller 201 is used for one or more power-on or power-on functions according to the remaining power of the power battery 10 , the connection status between the power battery 10 and the external power source 2 , the historical driving information of the electric vehicle 1 or the current battery demand of the electric vehicle 1 . Turn off the temperature control module 2011. Correspondingly, the identification module 2012 is used for one or more of the power on or off according to the remaining power of the power battery 10 , the connection status between the power battery 10 and the external power source 2 , the historical driving information of the electric vehicle 1 or the current battery demand of the electric vehicle 1 . Turn off the temperature control module 2011.

In the embodiment of the present application, the heating device 20, the controller 201 or the identification module 2012 are used to respond to the comparison result of at least one parameter in the historical driving information of the electric vehicle 1 with the preset parameter value, the current battery demand of the electric vehicle 1 The temperature control module 2011 is turned on or off by at least one of the comparison result of the information and the preset demand value, the comparison result of the remaining power of the power battery 10 and the preset power, or the connection status of the power battery 10 and the external power supply 2 .

In one embodiment, the heating device 20, the controller 201 or the identification module 2012 are used to turn on or turn off the temperature control according to the historical driving information of the electric vehicle 1, the remaining power of the power battery 10 and the connection status between the power battery 10 and the external power supply 2. Module 2011.

Exemplarily, the heating device 20 is used to respond to the fact that the distance parameter or duration parameter in the historical driving information of the electric vehicle 1 is less than the corresponding preset parameter value, and the remaining power of the power battery 10 is less than or equal to the preset power, and the power battery 10 Connected to the external power source 2, the heating device 20 turns on the temperature control module 2011.

It can be understood that if the distance parameter in the historical driving information of the electric vehicle 1 is smaller than the preset distance parameter or the duration parameter is smaller than the corresponding preset duration parameter, the power demand of the power battery 10 for the next or multiple future trips of the electric vehicle 1 is relatively low. few. The remaining power of the power battery 10 is greater than or equal to the preset power, and the remaining power of the power battery 10 can be used to supply power to the heating device 20 . The power battery 10 is connected to the external power supply 2 , and the power battery 10 can use the external power supply 2 to charge the power battery 10 . Correspondingly, 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 increase the temperature of the power battery 10 , thereby improving the drivability of the electric vehicle 1 . Moreover, the power battery 10 can be charged by the external power source 2 without reducing the cruising range of the electric vehicle 1 .

Exemplarily, the heating device 20 is used to respond to the distance parameter or duration parameter in the historical driving information of the electric vehicle 1 being greater than or equal to the corresponding preset parameter value, and the remaining power of the power battery 10 is less than the preset power, and the power battery 10 The heating device 20 turns off the temperature control module 2011 when it is not connected to the external power supply 2 .

It can be understood that the distance parameter in the historical driving information of the electric vehicle 1 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 Provide more power. The remaining power of the power battery 10 is less than the preset power, and the remaining power of the power battery 10 needs to reduce loss. The power battery 10 is not connected to the external power source 2 , and the power battery 10 cannot use the external power source 2 to charge the power battery 10 . Correspondingly, the heating device 20 turns off the temperature control module 2011 . When the battery 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 as to reduce power consumption of the power battery 10 , thereby increasing the cruising range of the electric vehicle 1 .

Exemplarily, the heating device 20 is used to respond to the distance parameter or duration parameter in the historical driving information of the electric vehicle 1 being greater than or equal to the corresponding preset parameter value, and the remaining power of the power battery 10 is less than the preset power, and the power battery 10 Connected to the external power source 2, the heating device 20 turns off the temperature control module 2011.

It can be understood that the distance parameter in the historical driving information of the electric vehicle 1 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 Provide more power. The remaining power of the power battery 10 is less than the preset power, and the remaining power of the power battery 10 needs to reduce loss. Correspondingly, 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 as to reduce power consumption of the power battery 10 , thereby satisfying the convenience of the user to start the next trip of the electric vehicle 1 at any time. In addition, the power battery 10 is connected to the external power supply 2, and the power battery 10 can use the external power supply 2 to charge the power battery 10, so that the remaining power of the power battery 10 gradually increases with charging. Correspondingly, the remaining power of the power battery 10 gradually increases to be greater than or equal to the preset power with charging, and the heating device 20 turns on the temperature control module 2011 . At this time, the heating device 20 heats the power battery 10 again, which can improve the drivability of the electric vehicle 1 in the next trip without affecting the cruising range of the electric vehicle 1 .

Correspondingly, 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 power of the power battery 10, and the connection status between the power battery 10 and the external power source 2, so that the cruising range and driving range of the electric vehicle 1 can be taken into account. performance.

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

Exemplarily, the heating device 20 is used to respond to the fact that the distance parameter in the historical driving information of the electric vehicle 1 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 and the external power supply 2 connected, the heating device 20 turns on the temperature control module 2011.

It can be understood that the distance parameter in the historical driving information of the electric vehicle 1 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 need a power battery 10 provides more power. The power battery 10 is connected to the external power supply 2 , and the power battery 10 can use the external power supply 2 to charge the power battery 10 . Correspondingly, 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 increase the temperature of the power battery 10 , thereby improving the drivability of the electric vehicle 1 . Moreover, the power battery 10 can be charged by the external power source 2 without reducing the cruising range of the electric vehicle 1 .

Exemplarily, the heating device 20 is used to respond to the fact that the distance parameter in the historical driving information of the electric vehicle 1 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 and the external power supply 2 If not connected, the heating device 20 turns on the temperature control module 2011 .

It can be understood that the distance parameter in the historical driving information of the electric vehicle 1 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 need a power battery 10 provides more power. The power battery 10 is not connected to the external power source 2 , and the power battery 10 cannot use the external power source 2 to charge the power battery 10 . Correspondingly, 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 to avoid power loss of the power battery 10 , thereby avoiding reducing the cruising range of the electric vehicle 1 .

Exemplarily, the heating device 20 is used to respond to the speed parameter less than or equal to the preset speed parameter value or the acceleration parameter 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 and the external power supply 2 are not connected. connected, the heating device 20 turns off the temperature control module 2011.

It can be understood that, if the speed parameter in the historical driving information of the electric vehicle 1 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, the next or future trips of the electric vehicle 1 will affect the power battery 10. The power demand of the electric vehicle 1 is small, and the driving experience of the electric vehicle 1 will not be affected without heating the power battery 10 . The power battery 10 is not connected to the external power source 2 , and the power battery 10 cannot use the external power source 2 to charge the power battery 10 . Correspondingly, 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 to avoid power loss of the power battery 10 , thereby avoiding affecting the cruising range of the electric vehicle 1 and not affecting the driving experience of the electric vehicle 1 .

Exemplarily, the heating device 20 is used to respond to the acceleration parameter or 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 is connected to the external power supply 2, the heating device 20 turns on the temperature control module 2011.

It can be understood that if the acceleration parameter in the historical driving information of the electric vehicle 1 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, the next or future trips of the electric vehicle 1 will affect the power battery 10. higher power requirements. The power battery 10 is connected to the external power supply 2 , and the power battery 10 can use the external power supply 2 to charge the power battery 10 . Correspondingly, 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 increase the temperature of the power battery 10 , thereby improving the drivability of the electric vehicle 1 . Moreover, the power battery 10 can be charged by the external power source 2 without reducing the cruising range of the electric vehicle 1 .

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

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

It can be understood that, if 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 battery cell temperature of the power battery 10 needs to be increased. The power battery 10 is connected to the external power supply 2 , and the power battery 10 can use the external power supply 2 to charge the power battery 10 . Correspondingly, 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 increase the temperature of the power battery 10 , thereby improving the drivability of the electric vehicle 1 . Moreover, the power battery 10 can be charged by the external power source 2 without reducing the cruising range of the electric vehicle 1 .

Exemplarily, the heating device 20 is used to turn off the temperature control module in response to the power demand value in the current battery demand information of the electric vehicle 1 being greater than or equal to the preset power demand value and the power battery 10 is not connected to the external power supply 2 2011.

It can be understood that 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, and the remaining power of the power battery 10 needs to reduce loss. The power battery 10 is not connected to the external power source 2 , and the power battery 10 cannot use the external power source 2 to charge the power battery 10 . Correspondingly, 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 loss of the power battery 10 is reduced, thereby increasing the cruising range of the electric vehicle 1 .

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

Exemplarily, the heating device 20 is configured to respond to the fact that the power demand value in the current battery demand information is greater than or equal to the preset power demand value and the power demand value is less than the preset power demand value, and the remaining power of the power battery 10 is greater than the preset power, The heating device 20 turns on the temperature control module 2011 .

It can be understood that 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 and the power demand value is less than the preset power demand value, and the next or future multiple trips of the electric vehicle 1 need a power battery The 10 provides more power but less charge. The remaining power of the power battery 10 is greater than the preset power, and the remaining power of the power battery 10 is relatively large. Correspondingly, 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 improve the driving experience of the electric vehicle 1, and the power demand of the power battery 10 for the next trip or multiple future trips of the electric vehicle 1 is relatively low. Low, the power loss caused by heating the power battery 10 will not affect the cruising range of the electric vehicle 1 for the next or multiple trips in the future.

Exemplarily, the heating device 20 is used to respond to the current battery demand information of the electric vehicle 1 that the power demand value is less than the preset power demand value, and the power demand value is greater than or equal to the preset power demand value, and the remaining power of the power battery 10 The heating device 20 turns off the temperature control module 2011 when the power is less than the preset power.

It can be understood that the power demand value of the electric vehicle 1 is less than the preset power demand value, and the power demand of the electric vehicle 1 on the power battery 10 for the next trip or multiple trips in the future is relatively small. The power demand value of the electric vehicle 1 is greater than or equal to the preset power demand value, and the power demand of the electric vehicle 1 on the power battery 10 for the next trip or multiple trips in the future is relatively small. The remaining power of the power battery 10 is less than the preset power, and the remaining power of the power battery 10 needs to reduce loss to meet the demand of the electric vehicle 1 for the next trip. Correspondingly, 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 to avoid power loss of the power battery 10, thereby increasing the cruising range of the electric vehicle 1 without affecting the driving of the next trip of the electric vehicle 1 experience.

In the embodiment of the present application, the controller 201 is also used to obtain the driver's heating instruction. Wherein, the heating command is used to control the heating device 20 to heat the power battery 10 . Exemplarily, the navigation device 50 is a car machine, and the user interface may be a display screen of the car machine. The user can input heating instructions through the display screen interface of the navigation device 50 . The controller 201 is used for heating the power battery 10 by the heating device 20 in response to a heating instruction.

The heating device 20 and its controller 201 provided in the embodiment of the present application, and the electric vehicle 1 can be based on the historical driving information of the electric vehicle 1, the current battery demand of the electric vehicle 1, the remaining power of the power battery 10, the power battery 10 and the external power supply. At least one of the connection states of 2 determines whether to heat the power battery 10 when the battery core temperature of the power battery 10 is too low, thereby reducing the loss of the remaining power of the power battery 10 due to heating, and then taking into account the cruising range of the electric vehicle 1 and drivability.

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be determined by the protection scope of the claims.

Claims (15)

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.

Images