Charging method, device, vehicle controller, battery controller and electric vehicle

Abstract

The embodiment of the present invention discloses a charging method, including: the method is applied to the vehicle controller of an electric vehicle, when the electric vehicle is in the OFF gear and is connected to a DC charging pile and cannot be charged, and the battery controller of the electric vehicle is in the awake state, the status of the battery of the electric vehicle is received, when the battery status is not full, the wake-up request is set, and the electric vehicle is powered on with high voltage, when the high voltage power-on of the electric vehicle is successfully completed, the status identifier of the electric vehicle is set to a first indication value, and the status identifier is sent to the battery controller, the first indication value is used to indicate that the electric vehicle is in a chargeable state so that the battery controller starts the charging action so that the DC charging pile charges the battery. The embodiment of the present invention also provides a charging device, a vehicle controller, a battery controller and an electric vehicle.

Description

Technical Field

[0001] The present invention relates to a charging technology for electric vehicles, and in particular to a charging method, a device, a vehicle controller, a battery controller and an electric vehicle. Background Art

[0002] Currently, when an electric vehicle is DC-charging in the OFF position, the DC charging station must output a low-voltage auxiliary power signal to maintain the vehicle's wake-up state. DC charging stations with a damaged low-voltage auxiliary power signal output module or those that implement older DC charging standards cannot output this signal and therefore cannot maintain the vehicle's wake-up state in the OFF position.

[0003] Among them, when the signal cannot be output, the controller used by the vehicle during charging cannot work. Then, at this time, the vehicle cannot be kept awake in the OFF gear, and DC charging in the OFF gear cannot be performed. Summary of the Invention

[0004] Embodiments of the present invention provide a charging method, device, vehicle controller, battery controller, and electric vehicle, which can improve the charging efficiency of electric vehicles.

[0005] The technical solution of the present invention is achieved as follows:

[0006] An embodiment of the present invention provides a charging method, which is applied to a vehicle controller of an electric vehicle, comprising:

[0007] When the electric vehicle in the OFF position is connected to a DC charging pile and cannot be charged, and the battery controller of the electric vehicle is in an awake state, receiving the battery status of the electric vehicle;

[0008] When the battery is not fully charged, the electric vehicle is powered on with high voltage after setting a wake-up request;

[0009] When the high voltage power-up of the electric vehicle is successfully completed, setting the state identifier of the electric vehicle to a first indication value, and sending the state identifier to the battery controller;

[0010] The first indication value is used to indicate that the electric vehicle is in a chargeable state so that the battery controller starts a charging action so that the DC charging pile charges the battery.

[0011] In this way, when an electric vehicle in the OFF position is connected to a DC charging pile and cannot be charged, and the battery controller of the electric vehicle is in the awake state, the status of the battery of the electric vehicle is received. In this way, the status of the battery is known so that the vehicle controller can power on the vehicle with high voltage when the battery is not fully charged, so that the DC charging pile charges the battery, and prevent the vehicle controller from performing high-voltage power-on when the battery is fully charged. When the battery status is not full, the electric vehicle is powered on with high voltage after setting the wake-up requirement. When the high-voltage power-on of the electric vehicle is successfully completed, the status identifier of the electric vehicle is set to the first indication value, and the status identifier is sent to the battery controller, so that the battery controller starts the charging action, thereby allowing the DC charging pile to charge the battery. In this way, the battery controller starts the charging action by powering on the vehicle controller with high voltage, thereby allowing the DC charging pile to charge the battery, and preventing the problem of being unable to charge due to the inability of the DC charging pile to output a low-voltage auxiliary power signal.

[0012] Furthermore, when the high voltage power-on of the electric vehicle is successfully completed, the state identifier of the electric vehicle is set to a first indication value, and the state identifier is sent to the battery controller, including:

[0013] When the high voltage power-up of the electric vehicle is successfully completed within a preset time period, the state identifier of the electric vehicle is set to the first indication value, and the state identifier is sent to the battery controller.

[0014] In this way, by setting the length of the preset time period, the vehicle controller can more accurately judge whether the high-voltage power-up of the electric vehicle is successful or not, preventing incorrect judgment caused by the high-voltage power-up being too long or too slow, which is conducive to improving charging efficiency.

[0015] Furthermore, the method further comprises:

[0016] When the high voltage power-up of the electric vehicle is not successfully completed within a preset time period, the wake-up requirement is reset.

[0017] In this way, by setting the length of the preset time period, the vehicle controller can more accurately judge whether the high-voltage power-up of the electric vehicle is successful or not, preventing incorrect judgment caused by the high-voltage power-up being too long or too slow, which is conducive to improving charging efficiency.

[0018] Furthermore, the method further comprises:

[0019] When receiving an instruction to exit charging, setting the state flag to a second indication value;

[0020] Sending the status identifier to the battery controller;

[0021] The second indication value is used to indicate that the electric vehicle is in an unchargeable state so that the battery controller turns off the charging action and the DC charging pile is prohibited from charging the battery.

[0022] In this way, the battery controller knows that the electric vehicle is in a non-rechargeable state, which facilitates the battery controller to exit charging in a timely manner.

[0023] An embodiment of the present invention provides a charging method, which is applied to a battery controller of an electric vehicle and includes:

[0024] When the electric vehicle in the OFF gear is connected to the DC charging pile and cannot be charged, and the battery controller is in the awake state, obtaining the current power level of the battery of the electric vehicle;

[0025] When the current power level indicates that the battery is not fully charged, the battery status is sent to the vehicle controller of the electric vehicle; wherein the battery status is used by the vehicle controller to generate a value of the status identifier of the electric vehicle by powering on the electric vehicle with high voltage after triggering a wake-up request;

[0026] receiving a status identifier of the electric vehicle;

[0027] When the value of the state identifier indicates that the electric vehicle is in a chargeable state, a charging action is started so that the DC charging pile charges the battery.

[0028] Furthermore, the method further comprises:

[0029] When the battery does not enter the charging state within a preset time period after the charging action is started, a command to exit charging is sent to the vehicle controller;

[0030] and / or,

[0031] When the DC charging pile charges the battery until the battery is fully charged, an instruction to exit charging is sent to the vehicle controller;

[0032] and / or,

[0033] When the DC charging pile stops charging the battery, an instruction to quit charging is sent to the vehicle controller.

[0034] In this way, when the DC charging pile is not charging the battery, the vehicle controller can be notified in time, so that the vehicle controller receives the instruction to exit charging and exits the charging process in time.

[0035] Furthermore, the method further comprises:

[0036] When the DC charging pile is charging the battery and the received value of the state identifier indicates that the electric vehicle is in a non-chargeable state, the charging action is turned off so that the DC charging pile stops charging the battery.

[0037] In this way, when an instruction to exit charging is received, charging can be exited in a timely manner through the battery controller.

[0038] An embodiment of the present invention provides a charging device, which is provided in a vehicle controller of an electric vehicle and includes:

[0039] A first receiving module is configured to receive the battery status of the electric vehicle when the electric vehicle is in an OFF position and is connected to a DC charging pile and cannot be charged, and the battery controller of the electric vehicle is in an awake state;

[0040] A power-on module is configured to power on the electric vehicle with high voltage after setting a wake-up request when the battery is not fully charged;

[0041] a first sending module, configured to set a status identifier of the electric vehicle to a first indication value when the high voltage power-up of the electric vehicle is successfully completed, and to send the status identifier to the battery controller;

[0042] The first indication value is used to indicate that the electric vehicle is in a chargeable state so that the battery controller starts a charging action so that the DC charging pile charges the battery.

[0043] An embodiment of the present invention provides a charging device, which is provided in a battery controller of an electric vehicle and includes:

[0044] An acquisition module, configured to acquire the current power level of the battery of the electric vehicle when the electric vehicle is in the OFF gear and is connected to a DC charging pile and cannot be charged, and the battery controller is in an awake state;

[0045] A second sending module is configured to send the battery status to the vehicle controller of the electric vehicle when the current power level indicates that the battery status is not fully charged; wherein the battery status is used by the vehicle controller to perform high-voltage power-on on the electric vehicle after triggering a wake-up request to generate a value of the status identifier of the electric vehicle;

[0046] A second receiving module is used to receive a status identifier of the electric vehicle;

[0047] A charging module is used to start a charging action so that the DC charging pile charges the battery when the value of the status identifier indicates that the electric vehicle is in a chargeable state.

[0048] An embodiment of the present invention provides a vehicle controller, comprising: a processor and a storage medium storing instructions executable by the processor, wherein the storage medium relies on the processor to perform operations via a communication bus, and when the instructions are executed by the processor, the charging method described in one or more of the above embodiments is executed.

[0049] An embodiment of the present invention provides a battery controller, comprising: a processor and a storage medium storing instructions executable by the processor, wherein the storage medium relies on the processor to perform operations via a communication bus, and when the instructions are executed by the processor, the charging method described in one or more of the above embodiments is executed.

[0050] An embodiment of the present invention provides an electric vehicle, comprising: a battery, a vehicle controller as described in one or more embodiments, and a battery controller as described in one or more embodiments.

[0051] An embodiment of the present invention further provides a computer program product, comprising a computer program or instructions, wherein when the computer program or instructions are executed by a processor, the steps of the charging method described in one or more of the above embodiments are implemented.

[0052] Beneficial effects of the present invention:

[0053] (1) When an electric vehicle in the OFF position is connected to a DC charging pile and cannot be charged, and the battery controller of the electric vehicle is in an awake state, the status of the battery of the electric vehicle is received, so that the status of the battery is known so that the vehicle controller can power on the vehicle with high voltage when the battery is not fully charged, so that the DC charging pile can charge the battery, and the vehicle controller can be prevented from performing high voltage power-on when the battery is fully charged;

[0054] (2) When the battery is not fully charged, the electric vehicle is powered on with high voltage after the wake-up demand is set. When the high voltage power-on of the electric vehicle is successfully completed, the state identifier of the electric vehicle is set to the first indication value, and the state identifier is sent to the battery controller, so that the battery controller starts the charging action, thereby enabling the DC charging pile to charge the battery. In this way, the battery controller starts the charging action by the high voltage power-on method of the vehicle controller, thereby enabling the DC charging pile to charge the battery, thereby preventing the problem of being unable to charge due to the inability of the DC charging pile to output a low-voltage auxiliary power signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 A schematic structural diagram of an optional charging system provided in an embodiment of the present invention;

[0056] Figure 2 A schematic diagram of an interactive process of an optional charging method provided in an embodiment of the present invention;

[0057] Figure 3 A schematic diagram of an interactive process of an example of an optional charging method provided in an embodiment of the present invention;

[0058] Figure 4 A schematic diagram of an optional charging method provided in an embodiment of the present invention Figure 1 ;

[0059] Figure 5 A schematic diagram of an optional charging method provided in an embodiment of the present invention Figure 2 ;

[0060] Figure 6 A schematic diagram of an optional charging device provided in an embodiment of the present invention Figure 1 ;

[0061] Figure 7 A schematic diagram of an optional charging device provided in an embodiment of the present invention Figure 2 ;

[0062] Figure 8 A schematic structural diagram of an optional vehicle controller provided in an embodiment of the present invention;

[0063] Figure 9 A schematic structural diagram of an optional battery controller provided in an embodiment of the present invention;

[0064] Figure 10 A schematic structural diagram of an optional electric vehicle provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0065] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0066] In view of the problem in the related art that a DC charging pile with a damaged low-voltage auxiliary power signal output module or a DC charging pile that implements an old version of the DC charging standard cannot be charged, an embodiment of the present invention provides a charging method, which is applied to a charging system. Figure 1 A schematic diagram of the structure of an optional charging system provided in an embodiment of the present invention is shown in FIG. Figure 1 As shown, the charging system 100 includes a DC charging pile 11 and an electric vehicle 12, wherein the electric vehicle 12 includes: a battery controller 121, a vehicle controller 122 and a battery 123; Figure 2 A schematic diagram of an optional charging method provided by an embodiment of the present invention is shown in FIG. Figure 2 As shown, the charging method may include:

[0067] S201: When the electric vehicle in the OFF gear is connected to the DC charging pile and cannot be charged, and the battery controller is in the awake state, the battery controller obtains the current power of the battery of the electric vehicle;

[0068] As we all know, a DC charging pile with a damaged low-voltage auxiliary power signal output module or a DC charging pile that implements an old version of the DC charging standard cannot send a low-voltage auxiliary power signal to wake up the vehicle, so OFF-speed DC charging cannot be performed.

[0069] In order to enable a DC charging pile with a damaged low-voltage auxiliary power signal output module or a DC charging pile that implements an old version of the DC charging standard to still charge the battery of an electric vehicle, in an embodiment of the present invention, for the situation where an electric vehicle in the OFF position cannot be charged even when connected to the DC charging pile, the battery controller needs to first determine whether it is in the awake state. If yes, the battery controller obtains the current power of the battery of the electric vehicle. If not, it means that the battery controller cannot detect the connection of the DC charging gun, and DC charging in the OFF position cannot be performed.

[0070] Here, it should be noted that the battery of the above-mentioned electric vehicle is usually a power battery, and of course may also include a low-voltage battery. Here, the embodiment of the present invention does not make any specific limitation to this.

[0071] That is, if the vehicle's battery controller and vehicle controller are in sleep mode when the DC charging gun is connected, the vehicle cannot be awakened and DC charging cannot be started. When the DC charging gun is connected, if the vehicle's battery controller and vehicle controller are awake, the battery controller determines the charging gun connection status as a DC charging gun based on the charging gun connection resistance and sends a signal indicating that the charging gun is connected to a DC charging gun.

[0072] S202: When the current power level indicates that the battery is not fully charged, the battery controller sends the battery status to the vehicle controller of the electric vehicle;

[0073] After obtaining the current power of the battery through the S101 battery controller, the battery status is determined according to the current power. For example, when the current power is 100%, the battery status is determined to be fully charged. When the current power is less than 100%, the battery status is determined to be not fully charged.

[0074] When the current power level indicates that the battery is not fully charged, the battery controller sends the battery status to the vehicle controller of the electric vehicle, that is, the battery status is sent to the vehicle controller so that the vehicle controller knows the battery status and the vehicle controller can determine whether to perform the next operation.

[0075] S203: When the battery is not fully charged, the vehicle controller sets a wake-up request and then powers on the electric vehicle with high voltage;

[0076] After receiving the battery status, the vehicle controller determines whether the battery is fully charged or not fully charged. When it is fully charged, it means that the battery does not need to be charged. Therefore, the vehicle controller can prompt the user that the battery is fully charged. When it is not fully charged, it means that the battery needs to be charged. Therefore, the vehicle controller sets the wake-up requirement and powers on the electric vehicle with high voltage.

[0077] It should be noted that the above wake-up requirement can be set or reset. Setting it means that the vehicle controller can enter the charging process, and resetting it means that the vehicle controller cannot enter the charging process.

[0078] After the wake-up requirement is set, the electric vehicle is powered on with high voltage, and whether to perform the next operation is determined based on the high voltage power-on situation.

[0079] Here, the reason why high-voltage power-up is required is that when the battery is in the non-awakened state, the battery cells in the battery are disconnected from the external electrical equipment. Only by high-voltage power-up can the battery cells and the external electrical equipment be connected, thereby achieving charging.

[0080] As can be seen, when the vehicle controller receives a signal that the charging gun connection status has changed to a DC charging gun, if the battery is already fully charged, the vehicle controller does not trigger a wake-up request. When the vehicle controller receives a signal that the charging gun connection status has changed to a DC charging gun, if the battery is not fully charged, a wake-up request is triggered and maintained. The vehicle controller then coordinates with high-voltage components such as the battery controller and motor controller to perform high-voltage power-up.

[0081] S204: When the high voltage power-up of the electric vehicle is successfully completed, the vehicle controller sets the state identifier of the electric vehicle to a first indication value and sends the state identifier to the battery controller;

[0082] When the vehicle controller performs high-voltage power-on on the electric vehicle, it needs to determine whether the high-voltage power-on of the electric vehicle is successfully completed. If the high-voltage power-on is not successfully completed, it means that the vehicle controller cannot perform the charging process. If the high-voltage power-on is successfully completed, the vehicle controller enters the charging process and sets the status identifier of the electric vehicle to the first indication value, where the first indication value is used to indicate that the electric vehicle is in a chargeable state; and then sends the status identifier to the battery controller.

[0083] If the high voltage power-up fails, the vehicle controller exits the DC charging process and resets the wake-up request. If the high voltage power-up succeeds, a status flag is sent to the battery controller, which then starts its own DC charging operation.

[0084] That is, by sending the status identifier, the battery controller knows that the electric vehicle is in a chargeable state.

[0085] S205: When the value of the state identifier indicates that the electric vehicle is in a chargeable state, the vehicle controller starts a charging action to enable the DC charging pile to charge the battery.

[0086] The battery controller knows that the electric vehicle is in a chargeable state based on the value of the status indicator, and the vehicle controller starts the charging action, so that the DC charging pile charges the battery.

[0087] If the high voltage power-up fails, the vehicle controller exits the DC charging process and resets the wake-up request. If the high voltage power-up succeeds, a status flag is sent to the battery controller, which then starts its own DC charging operation.

[0088] To improve charging efficiency, in an optional embodiment, S104 may include:

[0089] When the high voltage power-up of the electric vehicle is successfully completed within a preset time period, the vehicle controller sets the status identifier of the electric vehicle to a first indication value and sends the status identifier to the battery controller.

[0090] It can be understood that the vehicle controller determines whether the high voltage power-up of the electric vehicle is successfully completed within a preset time period. If yes, it means that the high voltage power-up is successful; if not, it means that the high voltage power-up fails.

[0091] In this way, by setting the length of the preset time period, the vehicle controller can more accurately judge whether the high-voltage power-up of the electric vehicle is successful or not, preventing incorrect judgment caused by the high-voltage power-up being too long or too slow, which is conducive to improving charging efficiency.

[0092] In addition, regarding the determination of high voltage power-on within a preset time period, in an optional embodiment, the above method further includes:

[0093] When the high voltage power-up of the electric vehicle is not successfully completed within the preset time period, the vehicle controller resets the wake-up requirement.

[0094] It can be understood that the vehicle controller determines whether the high-voltage power-up of the electric vehicle is successfully completed within the preset time period, indicating that the high-voltage power-up fails, then the vehicle controller resets the wake-up requirement, thereby causing the vehicle controller to exit the charging process.

[0095] In this way, by setting the length of the preset time period, the vehicle controller can more accurately judge whether the high-voltage power-up of the electric vehicle is successful or not, preventing incorrect judgment caused by the high-voltage power-up being too long or too slow, which is conducive to improving charging efficiency.

[0096] That is to say, if the battery controller does not complete its own DC charging start-up action within the preset time period and the battery does not enter the charging state, the vehicle controller exits the DC charging process and resets the above wake-up requirement.

[0097] If the battery controller completes its own DC charging start-up action within the preset time period and the battery enters the charging state, the vehicle controller continues to run the DC charging function until the battery is fully charged or charging is terminated for other reasons. The vehicle controller exits the DC charging process and resets the above wake-up requirement.

[0098] During DC charging, there may be a scenario where charging may be exited. In an optional embodiment, the above method further includes:

[0099] When the battery does not enter the charging state within a preset time period after the charging action is turned on, the battery controller sends a command to exit charging to the vehicle controller;

[0100] and / or,

[0101] When the DC charging pile charges the battery until the battery enters the fully charged state, the battery controller sends a command to the vehicle controller to exit charging;

[0102] and / or,

[0103] When the DC charging pile stops charging the battery, the battery controller sends a command to exit charging to the vehicle controller.

[0104] It can be seen that the above includes multiple scenarios that require exiting charging. The first is that when the battery does not enter the charging state within the preset time period after the battery controller starts the charging action, it means that DC charging is still not possible, so the battery controller sends an exit charging instruction to the vehicle controller; the second is that the DC charging pile charges the battery until the battery enters the full state, which means that the battery no longer needs to be charged, so the battery controller sends an exit charging instruction to the vehicle controller; the third is that when the DC charging pile is charging the battery, it is suddenly stopped due to other reasons, which means that charging is not possible due to other reasons, so the battery controller sends an exit charging instruction to the vehicle controller.

[0105] It should be noted that, in addition to the above three methods, a combination of any two or three of the above three methods may also be included, and the embodiments of the present invention do not specifically limit this.

[0106] In this way, when the DC charging pile is not charging the battery, the vehicle controller can be notified in time, so that the vehicle controller receives the instruction to exit charging and exits the charging process in time.

[0107] In an optional embodiment, in the case where the charging process needs to be exited, the method further includes:

[0108] When the vehicle controller receives the instruction to exit charging, the vehicle controller sets the state flag to a second indication value;

[0109] The vehicle controller sends the status identifier to the battery controller;

[0110] It can be understood that when the vehicle controller receives the instruction to exit charging, the vehicle controller sets the status identifier to a second indication value, which is used to indicate that the electric vehicle is in an unchargeable state, and sends the status identifier to the battery controller.

[0111] In this way, the battery controller knows that the electric vehicle is in an unchargeable state, which facilitates the battery controller to exit charging in a timely manner.

[0112] Regarding the instruction to exit charging, in an optional embodiment, the method further includes:

[0113] When the DC charging pile charges the battery and the value of the status identifier received by the battery controller indicates that the electric vehicle is in a non-chargeable state, the battery controller shuts down the charging action so that the DC charging pile stops charging the battery.

[0114] When the DC charging pile charges the battery and the value of the status identifier received by the battery controller indicates that the electric vehicle is in a non-charging state, the battery controller turns off the charging action in order to exit charging in time, so that the DC charging pile stops charging the battery.

[0115] In this way, when an instruction to quit charging is received, the battery controller can quit charging in a timely manner.

[0116] The charging method described in one or more of the above embodiments is described below with examples.

[0117] Figure 3 A schematic diagram of an example process interaction of an optional charging method provided in an embodiment of the present invention, such as Figure 3 As shown, the charging method may include:

[0118] S301: Connect the DC charging cable that cannot output the auxiliary power signal in the OFF position; execute S302;

[0119] S302: Determine whether the battery controller is in awake state. If yes, execute S304; if no, execute S303;

[0120] S303: The vehicle cannot be awakened and DC charging in OFF gear cannot be performed.

[0121] S304: Determine whether the battery is fully charged. If yes, execute S305; if no, execute S306.

[0122] S305: No wake-up request is triggered.

[0123] S306: Trigger the wake-up requirement and maintain it, and execute the high-voltage power-on action; execute S307;

[0124] S307: Determine whether the high voltage power-up is completed within a certain period of time. If yes, execute S309; ​​if no, execute S308;

[0125] S308: The vehicle controller exits the charging process and resets the wake-up requirement.

[0126] S309: Send a status indicator to the battery controller; execute S310;

[0127] S310: Determine whether the battery has entered the charging state within a certain period of time. If yes, execute S312; if no, execute S311;

[0128] S311: The vehicle controller exits the charging process and resets the wake-up requirement.

[0129] S312: Continue the DC charging process; execute S313;

[0130] S313: When the battery is fully charged or charging is terminated, the vehicle controller exits the charging process and resets the wake-up requirement.

[0131] In other words, when the power is in the OFF position and a DC charging cable that cannot output an auxiliary power signal is connected, the vehicle controller determines whether it is awake. If it is not awake, it enters the state of being unable to detect the DC charging cable connection and cannot perform OFF position DC charging. If the battery controller is awake, it determines whether the battery is fully charged. If the battery is fully charged, the vehicle controller does not trigger the wake-up request.

[0132] If the battery is not fully charged, the vehicle controller triggers a wake-up request and maintains it. The vehicle controller then performs a high-voltage power-up operation. It determines whether the high-voltage power-up is completed within a certain period of time. If not, the vehicle controller exits the DC charging process and resets the wake-up request.

[0133] If high-voltage power-up is complete, the vehicle controller sends a status flag to the battery controller, which then initiates its own DC charging process. It then determines whether the battery has entered the charging state within a specified timeframe. If not, the vehicle controller exits the DC charging process and resets the wake-up request.

[0134] If the battery enters the charging state within a certain period of time, the vehicle controller will continue to run the DC charging process until the battery is fully charged or charging is terminated due to other reasons. The vehicle controller will exit the DC charging process and reset the above wake-up requirement.

[0135] The control method provided in this example can bring the following benefits: By determining the charging gun connection status and battery charging status, electric vehicles can also perform normal OFF-mode DC charging at DC charging piles with damaged low-voltage auxiliary power signal output modules or DC charging piles that implement older versions of DC charging standards, thereby improving the user charging experience.

[0136] An embodiment of the present invention provides a charging method. When an electric vehicle in an OFF gear is connected to a DC charging pile and cannot be charged, and a battery controller of the electric vehicle is in an awake state, the status of the battery of the electric vehicle is received. In this way, the status of the battery is known so that the vehicle controller can power on the vehicle with high voltage when the battery is not fully charged, so that the DC charging pile charges the battery, and prevent the vehicle controller from performing high-voltage power-on when the battery is fully charged. When the battery status is not full, the electric vehicle is powered on with high voltage after setting the wake-up requirement. When the high-voltage power-on of the electric vehicle is successfully completed, the status identifier of the electric vehicle is set to a first indication value, and the status identifier is sent to the battery controller, so that the battery controller starts the charging action, thereby enabling the DC charging pile to charge the battery. In this way, the battery controller starts the charging action by powering on the vehicle controller with high voltage, thereby enabling the DC charging pile to charge the battery, and preventing the problem of being unable to charge due to the inability of the DC charging pile to output a low-voltage auxiliary power signal.

[0137] The above charging method is described below using various devices in the charging system as an example.

[0138] The charging method is described using a vehicle controller of an electric vehicle in a charging system.

[0139] An embodiment of the present invention provides a charging method, which is applied to a vehicle controller of an electric vehicle. Figure 4 A schematic diagram of an optional charging method provided in an embodiment of the present invention Figure 1 ,like Figure 4 As shown, the charging method may include:

[0140] S401: When the electric vehicle in the OFF gear is connected to the DC charging pile and cannot be charged, and the battery controller of the electric vehicle is in the awake state, receiving the battery status of the electric vehicle;

[0141] S402: When the battery is not fully charged, the electric vehicle is powered on with high voltage after setting a wake-up request;

[0142] S403: When the high voltage power-up of the electric vehicle is successfully completed, the state identifier of the electric vehicle is set to a first indication value, and the state identifier is sent to the battery controller.

[0143] The first indication value is used to indicate that the electric vehicle is in a chargeable state so that the battery controller starts a charging action so that the DC charging pile charges the battery.

[0144] In an optional embodiment, S403 may include: when the high voltage power-up of the electric vehicle is successfully completed within a preset time period, setting the status identifier of the electric vehicle to a first indication value, and sending the status identifier to the battery controller.

[0145] In an optional embodiment, the above method further includes: resetting the wake-up requirement when the high voltage power-up of the electric vehicle is not successfully completed within a preset time period.

[0146] In an optional embodiment, the above method also includes: when an instruction to exit charging is received, setting the status identifier to a second indication value; sending the status identifier to the battery controller; wherein the second indication value is used to indicate that the electric vehicle is in an unchargeable state so that the battery controller shuts down the charging action so that the DC charging pile is prohibited from charging the battery.

[0147] The charging method is described using a battery controller of an electric vehicle in a charging system.

[0148] An embodiment of the present invention provides a charging method, which is applied to a battery controller of an electric vehicle. Figure 5 A schematic diagram of an optional charging method provided in an embodiment of the present invention Figure 2 ,like Figure 5 As shown, the charging method may include:

[0149] S501: When the electric vehicle in the OFF gear is connected to the DC charging pile and cannot be charged, and the battery controller is in the awake state, obtain the current power of the battery of the electric vehicle;

[0150] S502: When the current power level indicates that the battery is not fully charged, the battery status is sent to the vehicle controller of the electric vehicle;

[0151] The battery status is used to generate a status identification value of the electric vehicle by powering on the electric vehicle with high voltage after the vehicle controller triggers a wake-up demand;

[0152] S503: receiving a status identifier of the electric vehicle;

[0153] S504: When the value of the state identifier indicates that the electric vehicle is in a chargeable state, a charging action is started to enable the DC charging pile to charge the battery.

[0154] In an optional embodiment, the above method also includes: when the battery does not enter the charging state within a preset time period after the charging action is started, sending an instruction to exit charging to the vehicle controller; and / or, when the DC charging pile charges the battery until the battery enters a full state, sending an instruction to exit charging to the vehicle controller; and / or, when the DC charging pile stops charging the battery, sending an instruction to exit charging to the vehicle controller.

[0155] In an optional embodiment, the above method further includes: when the DC charging pile charges the battery and the received status identifier value indicates that the electric vehicle is in a non-chargeable state, shutting down the charging action so that the DC charging pile stops charging the battery.

[0156] Based on the same inventive concept as the above embodiments, an embodiment of the present invention provides a charging device, which is arranged in a vehicle controller of an electric vehicle. Figure 6 A schematic diagram of the structure of an optional charging device provided in an embodiment of the present invention is shown in FIG. Figure 6 As shown, the apparatus 600 may include:

[0157] The first receiving module 61 is used to receive the battery status of the electric vehicle when the electric vehicle is in the OFF gear and is connected to the DC charging pile and cannot be charged, and the battery controller of the electric vehicle is in the awake state;

[0158] The power-on module 62 is configured to power on the electric vehicle with high voltage after setting a wake-up request when the battery is not fully charged.

[0159] A first sending module 63 is configured to set a status identifier of the electric vehicle to a first indication value when the high voltage power-up of the electric vehicle is successfully completed, and to send the status identifier to the battery controller;

[0160] The first indication value is used to indicate that the electric vehicle is in a chargeable state so that the battery controller starts a charging action to enable the DC charging pile to charge the battery.

[0161] In an optional embodiment, the first sending module 63 is specifically used to: when the high voltage power-up of the electric vehicle is successfully completed within a preset time period, set the status identifier of the electric vehicle to a first indication value, and send the status identifier to the battery controller.

[0162] In an optional embodiment, the device is further configured to: reset the wake-up requirement when the high voltage power-up of the electric vehicle is not successfully completed within a preset time period.

[0163] In an optional embodiment, the device is also used to: when receiving an instruction to exit charging, set the status identifier to a second indication value; send the status identifier to the battery controller; wherein the second indication value is used to indicate that the electric vehicle is in an unchargeable state so that the battery controller shuts down the charging action so that the DC charging pile is prohibited from charging the battery.

[0164] In actual applications, the above-mentioned first receiving module 61, the set power-on module 62 and the first sending module 63 can be implemented by a processor located on the charging device 600, specifically a central processing unit (CPU), a microprocessor (MPU), a digital signal processor (DSP) or a field programmable gate array (FPGA).

[0165] An embodiment of the present invention provides a charging device, which is arranged in a battery controller of an electric vehicle. Figure 7 A schematic diagram of the structure of an optional charging device provided in an embodiment of the present invention is shown in FIG. Figure 7 As shown, the apparatus 700 may include:

[0166] An acquisition module 71 is configured to acquire the current power level of the battery of the electric vehicle when the electric vehicle is in the OFF position and is connected to a DC charging pile and cannot be charged, and the battery controller is in the awake state;

[0167] The second sending module 72 is used to send the battery status to the vehicle controller of the electric vehicle when the current power level indicates that the battery status is not fully charged; wherein the battery status is used by the vehicle controller to generate a status identification value of the electric vehicle by powering on the electric vehicle with high voltage after triggering a wake-up request;

[0168] The second receiving module 73 is used to receive the status identification of the electric vehicle;

[0169] The charging module 74 is configured to start a charging operation so that the DC charging pile charges the battery when the value of the state identifier indicates that the electric vehicle is in a chargeable state.

[0170] In an optional embodiment, the device is also used to: send an instruction to exit charging to the vehicle controller when the battery does not enter the charging state within a preset time period after the charging action is started; and / or, when the DC charging pile charges the battery until the battery enters a full state, send an instruction to exit charging to the vehicle controller; and / or, when the DC charging pile stops charging the battery, send an instruction to exit charging to the vehicle controller.

[0171] In an optional embodiment, the device is further configured to: when the DC charging pile is charging the battery and the received status identifier value indicates that the electric vehicle is in a non-chargeable state, shut down the charging action so that the DC charging pile stops charging the battery.

[0172] In practical applications, the acquisition module 71 , the second sending module 72 , the second receiving module 73 and the charging module 74 may be implemented by a processor located on the charging device 700 , specifically a CPU, an MPU, a DSP or an FPGA.

[0173] Figure 8 A schematic diagram of the structure of an optional vehicle controller provided in an embodiment of the present invention is shown in FIG. Figure 8 As shown, an embodiment of the present invention provides a vehicle controller 800, including:

[0174] A processor 81 and a storage medium 82 storing instructions executable by the processor 81, wherein the storage medium 82 relies on the processor 81 to perform operations through a communication bus 83. When the instructions are executed by the processor 81, the charging method described in one or more of the above embodiments is executed.

[0175] It should be noted that in actual application, the various components in the vehicle controller 800 are coupled together through the communication bus 73. It is understandable that the communication bus 83 is used to realize the connection and communication between these components. In addition to the data bus, the communication bus 83 also includes a power bus, a control bus and a status signal bus. However, for the sake of clarity, Figure 8 Various buses are labeled as communication buses 83.

[0176] Figure 9 A schematic diagram of the structure of an optional battery controller provided in an embodiment of the present invention is shown in FIG. Figure 9 As shown, an embodiment of the present invention provides a battery controller 900, including:

[0177] A processor 91 and a storage medium 92 storing executable instructions of the processor 91, wherein the storage medium 92 relies on the processor 91 to perform operations through a communication bus 93. When the instructions are executed by the processor 91, the charging method described in one or more of the above embodiments is executed.

[0178] It should be noted that in actual application, the various components in the battery controller 900 are coupled together via the communication bus 93. It is understood that the communication bus 93 is used to achieve connection and communication between these components. In addition to the data bus, the communication bus 93 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, Figure 9 Various buses are labeled as communication buses 93.

[0179] An embodiment of the present invention provides an electric vehicle. Figure 10 A schematic diagram of the structure of an optional electric vehicle provided in an embodiment of the present invention is shown in FIG. Figure 10 As shown, the electric vehicle 1000 may include: a battery 101, a vehicle controller 102 as described in one or more embodiments above, and a battery controller 103 as described in one or more embodiments above.

[0180] An embodiment of the present invention provides a computer storage medium storing executable instructions. When the executable instructions are executed by one or more processors, the processors execute the charging method as described in one or more of the above embodiments.

[0181] An embodiment of the present invention provides a computer program product, including a computer program or instructions. When the computer program or instructions are executed by a processor, the steps of the charging method described in one or more embodiments are implemented.

[0182] Among them, the computer-readable storage medium can be a magnetic random access memory (FRAM), a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a flash memory (Flash Memory), a magnetic surface storage device, an optical disc, or a compact disc read-only memory (CD-ROM) and other memories.

[0183] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of hardware embodiments, software embodiments, or embodiments combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage and optical storage, etc.) containing computer-usable program code.

[0184] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0185] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0186] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 The steps for the function specified in one or more boxes.

[0187] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A charging method, characterized in that: The method is applied to a vehicle controller of an electric vehicle, comprising: When the electric vehicle in the OFF position is connected to a DC charging pile and cannot be charged, and the battery controller of the electric vehicle is in an awake state, receiving the battery status of the electric vehicle; When the battery is not fully charged, the electric vehicle is powered on with high voltage after setting a wake-up request; When the high voltage power-up of the electric vehicle is successfully completed, setting the state identifier of the electric vehicle to a first indication value, and sending the state identifier to the battery controller; The first indication value is used to indicate that the electric vehicle is in a chargeable state so that the battery controller starts a charging action so that the DC charging pile charges the battery.

2. The method according to claim 1, characterized in that When the high voltage power-up of the electric vehicle is successfully completed, the state identifier of the electric vehicle is set to a first indication value, and the state identifier is sent to the battery controller, including: When the high voltage power-up of the electric vehicle is successfully completed within a preset time period, the state identifier of the electric vehicle is set to the first indication value, and the state identifier is sent to the battery controller.

3. The method according to claim 1, characterized in that The method further comprises: When the high voltage power-up of the electric vehicle is not successfully completed within a preset time period, the wake-up requirement is reset.

4. The method according to any one of claims 1 to 3, characterized in that The method further comprises: When receiving an instruction to exit charging, setting the state flag to a second indication value; Sending the status identifier to the battery controller; The second indication value is used to indicate that the electric vehicle is in an unchargeable state so that the battery controller turns off the charging action and the DC charging pile is prohibited from charging the battery.

5. A charging method, characterized in that: The method is applied to a battery controller of an electric vehicle, comprising: When the electric vehicle in the OFF gear is connected to the DC charging pile and cannot be charged, and the battery controller is in the awake state, obtaining the current power level of the battery of the electric vehicle; When the current power level indicates that the battery is not fully charged, the battery status is sent to the vehicle controller of the electric vehicle; wherein the battery status is used by the vehicle controller to generate a value of the status identifier of the electric vehicle by powering on the electric vehicle with high voltage after triggering a wake-up request; receiving a status identifier of the electric vehicle; When the value of the state identifier indicates that the electric vehicle is in a chargeable state, a charging action is started so that the DC charging pile charges the battery.

6. The method according to claim 5, characterized in that The method further comprises: When the battery does not enter the charging state within a preset time period after the charging action is started, a command to exit charging is sent to the vehicle controller; and / or, When the DC charging pile charges the battery until the battery is fully charged, an instruction to exit charging is sent to the vehicle controller; and / or, When the DC charging pile stops charging the battery, an instruction to quit charging is sent to the vehicle controller.

7. The method according to claim 5, characterized in that The method further comprises: When the DC charging pile is charging the battery and the received value of the state identifier indicates that the electric vehicle is in a non-chargeable state, the charging action is turned off so that the DC charging pile stops charging the battery.

8. A charging device, characterized in that: The device is provided in a vehicle controller of an electric vehicle and includes: A first receiving module is configured to receive the battery status of the electric vehicle when the electric vehicle is in an OFF position and is connected to a DC charging pile and cannot be charged, and the battery controller of the electric vehicle is in an awake state; A power-on module is configured to power on the electric vehicle with high voltage after setting a wake-up request when the battery is not fully charged; a first sending module, configured to set a status identifier of the electric vehicle to a first indication value when the high voltage power-up of the electric vehicle is successfully completed, and to send the status identifier to the battery controller; The first indication value is used to indicate that the electric vehicle is in a chargeable state so that the battery controller starts a charging action so that the DC charging pile charges the battery.

9. A charging device, characterized in that: The device is provided in a battery controller of an electric vehicle and includes: An acquisition module, configured to acquire the current power level of the battery of the electric vehicle when the electric vehicle is in the OFF gear and is connected to a DC charging pile and cannot be charged, and the battery controller is in an awake state; A second sending module is configured to send the battery status to the vehicle controller of the electric vehicle when the current power level indicates that the battery status is not fully charged; wherein the battery status is used by the vehicle controller to perform high-voltage power-on on the electric vehicle after triggering a wake-up request to generate a value of the status identifier of the electric vehicle; A second receiving module is used to receive a status identifier of the electric vehicle; A charging module is used to start a charging action so that the DC charging pile charges the battery when the value of the status identifier indicates that the electric vehicle is in a chargeable state.

10. A vehicle controller, characterized in that: include: A processor and a storage medium storing instructions executable by the processor, wherein the storage medium relies on the processor to perform operations via a communication bus, and when the instructions are executed by the processor, the charging method described in any one of claims 1 to 4 is executed.

11. A battery controller, characterized in that: include: A processor and a storage medium storing instructions executable by the processor, wherein the storage medium relies on the processor to perform operations via a communication bus, and when the instructions are executed by the processor, the charging method described in any one of claims 5 to 7 is executed.

12. An electric vehicle, characterized in that: include: A battery, a vehicle controller as claimed in claim 10, and a battery controller as claimed in claim 11.

13. A computer program product comprising a computer program or instructions, characterized in that When the computer program or instruction is executed by a processor, the steps of the charging method according to any one of claims 1 to 4 are implemented, or the steps of the charging method according to any one of claims 5 to 7 are implemented.

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