Service-oriented high-voltage regulation electricity supplementing method and device and storage medium

Abstract

The invention discloses a service-oriented high-voltage regulation electricity supplementing method and device and a storage medium. Comprising the steps that the SOC and the voltage of a low-voltage battery pack are continuously monitored, when the SOC of the low-voltage battery pack is smaller than a charging SOC threshold value and an enabling position is actively awakened, a back-domain controller, a vehicle control unit and a front-domain controller are awakened, and information of the low-voltage battery pack is sent to the back-domain controller; the back-domain controller judges that conditions are met, sends a charging request to the vehicle control unit, charges the low-voltage battery pack through the vehicle control unit and the high-voltage battery pack, customized services are made on the basis of an SOA framework and high-voltage power-on, during charging, high-voltage power-on can be achieved at an OFF gear, only the target controller is awakened on the basis of sub-network segment management, simultaneous awakening of the whole vehicle is avoided, power consumption is reduced, and power consumption is reduced. And meanwhile, the back-domain controller can be awakened only when the back-domain controller is at the active awakening enabling position, so that the problems of frequent network awakening, electric energy loss and battery safety are solved, and the requirements of accurate awakening, power saving, safety and high efficiency of power compensation are met.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle charging, and in particular to a method, device and storage medium for charging a power supply oriented to high voltage regulation. Background Art

[0002] As the number of electric vehicles grows, low-voltage battery feeding of electric vehicles often occurs on the market, causing the vehicle to fail to start normally. There are many reasons for the low-voltage battery feeding: the vehicle is not used for a long time, causing the low-voltage battery pack to self-discharge and not be replenished and fed; forgetting to turn off the electrical components on the vehicle, causing rapid current loss; in addition, new systems such as smart cockpits and smart vehicle control have added a lot of low-voltage electrical component loads, such as voice interaction, four-seat naps, wired projection and massage rhythms, etc., and the static power consumption is much higher than that of traditional vehicles.

[0003] Traditional technical solutions use external chargers to recharge vehicles, which brings a lot of inconvenience to drivers. In order to meet user needs, timed wake-up or monitoring of battery power to charge the battery has become the mainstream technical solution, but there are still many defects. For example, the charging and discharging distribution unit and the battery management unit are interlocked or the thermal management is abnormal, which leads to the failure of charging or the controller will still be awakened by the network to keep working when the charging current is low, and the whole vehicle wakes up at the same time, which consumes a lot of electricity. Frequent wake-up for charging can easily cause overcharge of the battery, which not only greatly reduces the battery life but also has the risk of lithium battery explosion caused by excessive charging current. Summary of the invention

[0004] In order to solve the above problems, the inventors have made the present invention, and through specific implementation methods, provide a power replenishment method, device and storage medium for service high voltage regulation.

[0005] In a first aspect, an embodiment of the present invention provides a method for providing high voltage service-oriented power replenishment, including:

[0006] Continuously monitor the SOC and voltage of the low-voltage battery pack, and when the SOC of the low-voltage battery pack is less than the charging SOC threshold and the active wake-up enable bit is set, wake up the back-end controller and send the SOC and voltage of the low-voltage battery pack to the back-end controller;

[0007] When the SOC of the low-voltage battery pack is less than the charging SOC threshold, or the voltage of the low-voltage battery pack is less than the charging voltage threshold, the rear domain controller is controlled to generate a charging request, and the rear domain controller is used to send a wake-up message to the vehicle controller and the front domain controller to wake up and initialize the vehicle controller and the front domain controller;

[0008] The rear domain controller is used to send a charging request to the vehicle controller, and the vehicle controller and the high-voltage battery pack are used to charge the low-voltage battery pack.

[0009] Furthermore, the method of continuously monitoring the SOC and voltage of the low-voltage battery pack, waking up the back-end controller when the SOC of the low-voltage battery pack is less than the charging SOC threshold and the active wake-up enable bit is set, and sending the SOC and voltage of the low-voltage battery pack to the back-end controller, further includes the following steps:

[0010] When the rear domain controller receives the SOC and voltage of the low-voltage battery pack, filtering the SOC and voltage of the low-voltage battery pack to obtain the filtered SOC and voltage of the low-voltage battery pack;

[0011] When the SOC of the low-voltage battery pack is less than the charging SOC threshold, or the voltage of the low-voltage battery pack is less than the charging voltage threshold, the rear domain controller is controlled to generate a charging request, and the rear domain controller is used to send a wake-up message to the vehicle controller and the front domain controller to wake up the vehicle controller and the front domain controller and initialize them, including the following steps:

[0012] When the SOC of the filtered low-voltage battery pack is less than the charging SOC threshold, or the voltage of the filtered low-voltage battery pack is less than the charging voltage threshold, the rear domain controller is controlled to generate a charging request, and the rear domain controller is used to send a wake-up message to the vehicle controller and the front domain controller to wake up and initialize the vehicle controller and the front domain controller.

[0013] Further, the controlling the rear domain controller to generate a power replenishment request, using the rear domain controller to send a wake-up message to the vehicle controller and the front domain controller, waking up the vehicle controller and the front domain controller and initializing them, includes the following steps:

[0014] Using the back-end controller to modulate the target wake-up network segment flag signal to generate a wake-up message;

[0015] Sending the wake-up message to the target network segment, so that the vehicle controller and the front domain controller receive the wake-up message in the target network segment, wherein the vehicle controller and the front domain controller are configured such that when the vehicle controller and the front domain controller receive the wake-up message in the target network segment, the vehicle controller and the front domain controller are awakened and initialized;

[0016] According to the target wake-up network segment flag signal, the front domain controller is used to wake up the corresponding downstream network segment.

[0017] Furthermore, the method of using the vehicle controller and the high-voltage battery pack to supplement the low-voltage battery pack includes the following steps:

[0018] When the vehicle controller receives a power replenishment request, it determines whether the high-voltage conditions are met. If the high-voltage conditions are met, it controls the closing of the main positive and negative relays to complete the high-voltage power-on.

[0019] The control voltage conversion unit converts the output high voltage of the power battery into a preset low voltage to charge the low voltage battery pack.

[0020] Furthermore, the upper high pressure condition includes:

[0021] The voltage of the low-voltage battery is greater than a voltage threshold, and,

[0022] The battery management system and vehicle controller have no upper high voltage faults, the battery management unit, RMCU and charging and discharging distribution unit have no interlocking faults, and,

[0023] There is no level 3 fault in the battery cooling circuit and the motor speed is less than 300rpm.

[0024] Furthermore, the method further comprises the following steps:

[0025] After the vehicle controller receives the power replenishment request, when the response time of the voltage conversion module is greater than the response time threshold, or,

[0026] When the SOC of the low-voltage battery pack is greater than the charging exit SOC threshold, and the output current of the voltage conversion module is less than the charging current threshold, or,

[0027] When the current of the low-voltage battery pack is less than the lower threshold of the charging current and the duration exceeds the duration threshold, the vehicle is not charging in the usage scenario, and the SOC of the low-voltage battery pack is not less than the preset SOC lower limit, or,

[0028] When the communication of the low-voltage battery SOC, voltage or current is lost,

[0029] The rear domain controller is used to generate a power replenishment exit request and send it to the vehicle controller to stop the vehicle controller and the high-voltage battery pack from replenishing the low-voltage battery pack.

[0030] Furthermore, the method further comprises the following steps:

[0031] When the vehicle controller receives the power replenishment request and the response time of the voltage conversion module is greater than the response time threshold, it is determined that the power replenishment pre-failure;

[0032] When the number of power replenishment failures exceeds the threshold, it is determined as power replenishment failure and active wake-up is disabled;

[0033] When the back-end controller is awakened to high voltage through the network, hard line or power-on, the active awakening enable bit is set.

[0034] Furthermore, when the power replenishment fails or the power replenishment is exited, the back-end controller is used to send a deep sleep request to each electrical load module to control each electrical load module to enter a deep sleep state.

[0035] In a second aspect, an embodiment of the present invention provides a power replenishment device, including:

[0036] A monitoring module is used to continuously monitor the SOC and voltage of the low-voltage battery pack, and when the SOC of the low-voltage battery pack is less than the charging SOC threshold and the active wake-up enable bit is set, the back-end controller is woken up and the SOC and voltage of the low-voltage battery pack are sent to the back-end controller;

[0037] An active wake-up module, used to control the rear domain controller to generate a replenishment request when the SOC of the low-voltage battery pack is less than the replenishment SOC threshold, or the voltage of the low-voltage battery pack is less than the replenishment voltage threshold, and use the rear domain controller to send a wake-up message to the vehicle controller and the front domain controller to wake up and initialize the vehicle controller and the front domain controller;

[0038] The power replenishment control module is used to use the rear domain controller to send a power replenishment request to the vehicle controller, and use the vehicle controller and the high-voltage battery pack to replenish the low-voltage battery pack.

[0039] In a third aspect, an embodiment of the present invention provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and when the computer executable instructions are executed, the service-oriented high-voltage adjustment power replenishment method as described above is implemented.

[0040] The beneficial effects of the above technical solution provided by the embodiment of the present invention include at least: by continuously monitoring the SOC and voltage of the low-voltage battery pack, when the SOC of the low-voltage battery pack is less than the charging SOC threshold and the active wake-up enable bit is in the position, the rear domain controller, the vehicle controller and the front domain controller are woken up, and the low-voltage battery pack information is sent to the rear domain controller. The rear domain controller determines that the conditions are met and sends the charging request to the vehicle controller. The low-voltage battery pack is recharged using the vehicle controller and the high-voltage battery pack. Based on the SOA architecture, high-voltage power-on is made into a customized service. When recharging, the high voltage can be turned on in the OFF gear and only the target controller is woken up based on the network segment management, avoiding the whole vehicle from waking up at the same time and reducing power consumption. At the same time, the rear domain controller can only be awakened when the active wake-up enable bit is in the position, solving the problems of frequent network wake-up, power loss and battery safety, and meeting the requirements of accurate wake-up, power saving, safety and high efficiency of recharging.

[0041] Other features and advantages of the present invention will be described in the following description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description, claims, and drawings.

[0042] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0044] Figure 1 is a flow chart of a method in an embodiment of the present invention;

[0045] Figure 2 It is a structural block diagram of the power supplement system in an embodiment of the present invention;

[0046] Figure 3 This is a hierarchical diagram of the high-voltage power-on function service call based on the SOA architecture in an embodiment of the present invention. DETAILED DESCRIPTION

[0047] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0048] As the number of electric vehicles grows, low-voltage battery feeding of electric vehicles often occurs on the market, causing the vehicle to fail to start normally. There are many reasons for the low-voltage battery feeding: the vehicle is not used for a long time, causing the low-voltage battery pack to self-discharge and not be replenished and fed; forgetting to turn off the electrical components on the vehicle, causing rapid current loss; in addition, new systems such as smart cockpits and smart vehicle control have added a lot of low-voltage electrical component loads, such as voice interaction, four-seat naps, wired projection and massage rhythms, etc., and the static power consumption is much higher than that of traditional vehicles.

[0049] Traditional technical solutions use external chargers to recharge vehicles, which brings a lot of inconvenience to drivers. In order to meet user needs, timed wake-up or monitoring battery power to charge the battery has become the mainstream technical solution, but there are still many defects, such as: 1. When the charging and discharging distribution unit and the battery management unit are interlocked or the thermal management is abnormal, the controller will still be awakened by the network to keep working when the charging current is low, and the whole vehicle wakes up at the same time, which consumes a lot of electricity; in addition, frequent wake-up for charging is easy to cause overcharge of the battery, which not only greatly reduces the battery life but also has the risk of lithium battery explosion due to excessive charging current; 2. The current charging mechanism on the market is mostly to send the charging request to the VCU (vehicle control computing center, integrated VCU vehicle controller) after the low voltage is turned on, and then control the high voltage, and control the DCDC to charge the low voltage battery. This mechanism can only use the high voltage for charging when the power is turned on to the ON position. The increase in the workload in the ON position will cause unnecessary energy loss.

[0050] In order to solve the problems existing in the prior art, the embodiments of the present invention provide a power replenishment method, device and storage medium for service-oriented high voltage regulation.

[0051] The embodiment of the present invention provides a method for providing high voltage adjustment for service, the process of which is as follows: Figure 1 As shown, the following steps are included:

[0052] Step S1: Continuously monitor the SOC and voltage of the low-voltage battery pack. When the SOC of the low-voltage battery pack is less than the charging SOC threshold and the active wake-up enable bit is set, wake up the back-end controller and send the SOC and voltage of the low-voltage battery pack to the back-end controller.

[0053] Step S2: When the SOC of the low-voltage battery pack is less than the charging SOC threshold, or the voltage of the low-voltage battery pack is less than the charging voltage threshold, the rear domain controller is controlled to generate a charging request, and the rear domain controller is used to send a wake-up message to the vehicle controller and the front domain controller to wake up and initialize the vehicle controller and the front domain controller.

[0054] Step S3: using the rear domain controller to send a charging request to the vehicle controller, and using the vehicle controller and the high-voltage battery pack to charge the low-voltage battery pack.

[0055] The above method of this embodiment continuously monitors the SOC and voltage of the low-voltage battery pack. When the SOC of the low-voltage battery pack is less than the charging SOC threshold and the active wake-up enable bit is in position, the rear domain controller is woken up and the SOC and voltage of the low-voltage battery pack are sent to the rear domain controller; when the SOC of the low-voltage battery pack is less than the charging SOC threshold, or the voltage of the low-voltage battery pack is less than the charging voltage threshold, the rear domain controller is controlled to generate a charging request, and the rear domain controller is used to send a wake-up message to the vehicle controller and the front domain controller to wake up and initialize the vehicle controller and the front domain controller; the rear domain controller is used to send the charging request to the vehicle controller, and the vehicle controller and the high-voltage battery pack are used to charge the low-voltage battery pack. During charging, only the target controller is woken up to avoid waking up the whole vehicle at the same time, thereby reducing power consumption. At the same time, the rear domain controller can only be awakened when the active wake-up enable bit is in position, thereby solving the problems of frequent network wake-up, power loss and battery safety, and meeting the requirements of accurate wake-up, power saving, safety and high efficiency of charging.

[0056] Exemplarily, the above method of this embodiment is applied to a power management unit of a power replenishment system based on a SOA service architecture, such as Figure 2As shown in the figure, the charging system includes a power management unit (EBS / lithium battery system), a left front zone controller (FLZCU), a rear zone controller (RZCU), a vehicle control computing center (VCC), a remote system (TBOX) and a charging and discharging unit (CDU). Among them, the vehicle control computing center (VCC) integrates the vehicle control unit (VCU), and the charging and discharging unit (CDU) integrates the voltage conversion module (DCDC). The charging system is based on the SOA service framework, which defines different functional units as services for splitting, and connects them through defined interfaces and protocols between services, so that the services built in each system can interact in a unified and universal way. Different from the previous method of switching on the low voltage to the ON gear, and then the vehicle controller determines whether to switch on the high voltage for charging, here the high voltage power-on is made into a customized service based on the SOA architecture. When the charging conditions are met, the OFF gear can call the high voltage service to directly control the voltage conversion unit to charge the battery, reducing the power loss of the low voltage load.

[0057] Specifically, Figure 3 As shown in the figure, the SOA service architecture is divided into application service layer, enhanced service layer, atomic service layer and device abstraction layer according to demand. The calling relationship is from top to bottom, and interacts with the bottom layer through the RTE layer; the application service layer is used to issue high-voltage instructions to the enhanced service layer, and the trigger sources for controlling the high voltage include five types: intelligent power replenishment, OTA, sentry mode, pet mode and remote air conditioning; the enhanced service layer is used to perform priority arbitration on these trigger source calls and send actuator control commands to the atomic service layer; the atomic service layer is used to receive high-voltage instructions from the enhanced service layer; the device abstraction layer interacts with the hardware, identifies changes in I / O, CAN and other signals, and is directly called by the atomic service layer, and receives instructions from the atomic service layer to control the high-voltage components to power on.

[0058] In the above method of this embodiment, the SOC and voltage of the low-voltage battery pack are continuously monitored. When the SOC of the low-voltage battery pack is less than the charging SOC threshold and the active wake-up enable bit is set, the back-end controller is woken up, and the SOC and voltage of the low-voltage battery pack are sent to the back-end controller, the following steps are also included:

[0059] When the rear domain controller receives the SOC and voltage of the low-voltage battery pack, filtering the SOC and voltage of the low-voltage battery pack to obtain the filtered SOC and voltage of the low-voltage battery pack;

[0060] When the SOC of the low-voltage battery pack is less than the charging SOC threshold, or the voltage of the low-voltage battery pack is less than the charging voltage threshold, the rear domain controller is controlled to generate a charging request, and the rear domain controller is used to send a wake-up message to the vehicle controller and the front domain controller to wake up the vehicle controller and the front domain controller and initialize them, including the following steps:

[0061] When the SOC of the filtered low-voltage battery pack is less than the charging SOC threshold, or the voltage of the filtered low-voltage battery pack is less than the charging voltage threshold, the rear domain controller is controlled to generate a charging request, and the rear domain controller is used to send a wake-up message to the vehicle controller and the front domain controller to wake up and initialize the vehicle controller and the front domain controller.

[0062] Among them, the charging SOC threshold is set according to the actual vehicle condition, for example, the calibrable SOC first lower limit is 70%, and the charging voltage threshold is 11.8V.

[0063] Specifically, when the back-end controller receives the SOC and voltage of the low-voltage battery pack, the SOC and voltage of the low-voltage battery pack are filtered using an RC filter to avoid short-term large-scale jumps in the signal. The RC filter algorithm formula is as follows:

[0064] Y(n)=α*X(n)+(1-α)Y(n-1),

[0065] In the formula, α is the filter coefficient, X(n) is the sampling value, Y(n-1) is the output value of the previous filter, and Y(n) is the output value of this filter. The smaller α is, the stronger the filtering effect is and the smoother the output curve is. If α is too small, it will deviate from the true value.

[0066] The method for adjusting the filter coefficient α is as follows: First, U = IR, Q = It, and the derivative of C = Q / U is obtained.

[0067] δQ=CδU C

[0068]

[0069] Transformed into a difference equation:

[0070]

[0071] Get the filter coefficient

[0072] According to the cut-off frequency formula

[0073] The relationship between the filter coefficient α and the cutoff frequency fs is obtained

[0074] Where U is voltage, I is current, R is impedance, T is filter calculation period, C is capacitance, and Q is charge.

[0075] Preferably, the continuous monitoring of the SOC and voltage of the low-voltage battery pack, when the SOC of the low-voltage battery pack is less than the charging SOC threshold and the active wake-up enable bit is set, waking up the back-end controller, and sending the SOC and voltage of the low-voltage battery pack to the back-end controller, includes the following steps:

[0076] Continuously monitor the SOC and voltage of the low-voltage battery pack. When the SOC of the low-voltage battery pack is less than the charging SOC threshold, the active wake-up enable position is set, the front hood lock state is locked, and the power battery SOC is not less than 10% of the SOC lower limit or the vehicle is charging. Send a charging request to the vehicle control computing center through the Ethernet signal to call the high-voltage service. The request should remain unchanged within the minimum holding time of the low-voltage charging request of 1 hour.

[0077] In the above method of this embodiment, the controlling the rear domain controller to generate a power replenishment request, using the rear domain controller to send a wake-up message to the vehicle controller and the front domain controller, waking up the vehicle controller and the front domain controller and initializing them, includes the following steps:

[0078] The target wake-up network segment flag signal is modulated by the rear domain controller to generate a wake-up message; the wake-up message is sent to the target network segment, so that the vehicle controller and the front domain controller receive the wake-up message in the target network segment, wherein the vehicle controller and the front domain controller are configured so that when the vehicle controller and the front domain controller receive the wake-up message in the target network segment, the vehicle controller and the front domain controller are awakened and initialized; according to the target wake-up network segment flag signal, the front domain controller is used to wake up the corresponding downstream network segment.

[0079] Exemplarily, after the target wake-up network segment flag signal is set to 1, a wake-up message is generated, and the wake-up message is sent in the FL_CANFD_GL network segment by the rear domain controller. When the vehicle controller and the front domain controller receive the wake-up message in the FL_CANFD_GL network segment, the vehicle controller and the front domain controller are awakened and initialized.

[0080] In the above method of this embodiment, the use of the vehicle controller and the high-voltage battery pack to supplement the low-voltage battery pack includes the following steps:

[0081] When the vehicle controller receives a power replenishment request, it determines whether the high-voltage conditions are met. If the high-voltage conditions are met, it controls the closing of the main positive and negative relays to complete the high-voltage power-on.

[0082] The control voltage conversion unit converts the output high voltage of the power battery into a preset low voltage to charge the low voltage battery pack.

[0083] For example,

[0084] In the above method of this embodiment, the upper high pressure condition includes:

[0085] The voltage of the low-voltage battery is greater than a voltage threshold, and,

[0086] The battery management system and vehicle controller have no upper high voltage faults, the battery management unit, RMCU and charging and discharging distribution unit have no interlocking faults, and,

[0087] There is no level 3 fault in the battery cooling circuit and the motor speed is less than 300rpm.

[0088] It can be understood that by judging whether there is a high-voltage fault in the battery management system and the vehicle controller, whether there is an interlocking fault in the battery management unit, RMCU and the charging and discharging distribution unit, whether there is a fault in the battery cooling circuit, and whether the speed exceeds the speed threshold, frequent wake-ups during high-voltage faults can be avoided and power consumption can be reduced.

[0089] In the above method of this embodiment, after the vehicle controller receives the replenishment request, when the response time of the voltage conversion module is greater than the response time threshold, or the SOC of the low-voltage battery pack is greater than the replenishment exit SOC threshold and the output current of the voltage conversion module is less than the replenishment current threshold, or the current of the low-voltage battery pack is less than the replenishment current lower threshold and the duration exceeds the duration threshold, the vehicle usage scenario is no longer charging, and the SOC of the low-voltage battery pack is not lower than the preset SOC lower limit, or when the communication of the low-voltage battery SOC, voltage or current is lost, the rear domain controller is used to generate a replenishment exit request and send it to the vehicle controller to stop the vehicle controller and the high-voltage battery pack from replenishing the voltage battery pack.

[0090] Exemplarily, the response time threshold is configured to be 30s, the recharging exit SOC threshold is configured to be 90% of the low-voltage battery SOC upper limit, the recharging current threshold is configured to be 25A, and the duration threshold is configured to be 1 hour.

[0091] It can be understood that when the communication of the low-voltage battery SOC, voltage or current is lost by configuring the rear domain controller to generate a power replenishment exit request and send it to the vehicle controller to stop the vehicle controller and the high-voltage battery pack from replenishing the voltage battery pack, which can avoid the high voltage from being maintained and unable to exit, while reducing power consumption and avoiding battery overvoltage and overcurrent.

[0092] Preferably, if the reception of signals such as battery SOC, voltage and current times out during the charging process and continues for more than 3 seconds for the communication fault confirmation time, the charging is immediately canceled.

[0093] Preferably, after the vehicle controller receives the power replenishment request, the response time of the voltage conversion module is greater than the response time threshold or the SOC of the low-voltage battery pack is greater than the power replenishment exit SOC threshold, and the output current of the voltage conversion module is less than the power replenishment current threshold, resulting in the power replenishment being stopped and the request to cancel the power replenishment is maintained unchanged for at least 30 minutes; since the current of the low-voltage battery pack is less than the lower power replenishment current threshold and the duration exceeds the duration threshold, the vehicle is no longer charging in the usage scenario, and the SOC of the low-voltage battery pack is not less than the preset SOC lower limit, resulting in the power replenishment being stopped and the second lower limit of the low-voltage battery SOC of 45% being assigned to the battery management unit to actively wake up the SOC threshold when canceling the power replenishment, and the cancellation state should last for the low-voltage power replenishment current is too small timeout lock time of 1 hour.

[0094] The above method of this embodiment further includes the following steps:

[0095] When the vehicle controller receives the power replenishment request and the response time of the voltage conversion module is greater than the response time threshold, it is determined that the power replenishment pre-failure;

[0096] When the number of power replenishment failures exceeds the threshold, it is determined as power replenishment failure and active wake-up is disabled;

[0097] When the back-end controller is awakened to high voltage through the network, hard line or power-on, the active awakening enable bit is set.

[0098] Exemplarily, the response time threshold is configured as 30 seconds, and the number threshold is configured as 3 times.

[0099] It can be understood that, through the above configuration, it is possible to avoid low-voltage battery feeding caused by no active wake-up due to a timeout due to accidental factors.

[0100] In the above method of this embodiment, when the power replenishment fails or the power replenishment is exited, the back-end controller is used to send a deep sleep request to each electrical load module to control each electrical load module to enter a deep sleep state.

[0101] It is understandable that after the power replenishment judgment fails, the vehicle's electrical load shuts down related functions to reduce power consumption and prevent power feeding.

[0102] Exemplarily, after the recharging judgment fails, turn off the quick start function of ICC; turn off all remote functions of TBOX; turn off the polling function in BNCM; turn off the TPMS monitoring function in FRZCU; turn off the seat memory function in FLZCU; turn off the (TBD) function in VCC; turn off the monitoring function of RLHS.

[0103] Those skilled in the art can change the above sequence without departing from the protection scope of the present disclosure.

[0104] Another embodiment of the present invention provides a power replenishment device, comprising:

[0105] A monitoring module is used to continuously monitor the SOC and voltage of the low-voltage battery pack, and when the SOC of the low-voltage battery pack is less than the charging SOC threshold and the active wake-up enable bit is set, the back-end controller is woken up and the SOC and voltage of the low-voltage battery pack are sent to the back-end controller;

[0106] An active wake-up module, used to control the rear domain controller to generate a replenishment request when the SOC of the low-voltage battery pack is less than the replenishment SOC threshold, or the voltage of the low-voltage battery pack is less than the replenishment voltage threshold, and use the rear domain controller to send a wake-up message to the vehicle controller and the front domain controller to wake up and initialize the vehicle controller and the front domain controller;

[0107] The power replenishment control module is used to use the rear domain controller to send a power replenishment request to the vehicle controller, and use the vehicle controller and the high-voltage battery pack to replenish the low-voltage battery pack.

[0108] Regarding the system in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0109] Based on the same inventive concept, an embodiment of the present invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and when the computer executable instructions are executed by a processor, the aforementioned service-oriented high voltage adjustment power replenishment method is implemented.

[0110] Any modifications, supplements and equivalent substitutions made within the scope of the principles of the present invention shall still fall within the patent scope of the present invention.

Claims

1. A method for providing high voltage service, characterized in that: The following steps are involved: Continuously monitor the SOC and voltage of the low-voltage battery pack, and when the SOC of the low-voltage battery pack is less than the charging SOC threshold and the active wake-up enable bit is set, wake up the back-end controller and send the SOC and voltage of the low-voltage battery pack to the back-end controller; When the SOC of the low-voltage battery pack is less than the charging SOC threshold, or the voltage of the low-voltage battery pack is less than the charging voltage threshold, the rear domain controller is controlled to generate a charging request, and the rear domain controller is used to send a wake-up message to the vehicle controller and the front domain controller to wake up and initialize the vehicle controller and the front domain controller; The rear domain controller is used to send a charging request to the vehicle controller, and the vehicle controller and the high-voltage battery pack are used to charge the low-voltage battery pack.

2. The method according to claim 1, characterized in that The method of continuously monitoring the SOC and voltage of the low-voltage battery pack, waking up the rear domain controller when the SOC of the low-voltage battery pack is less than the charging SOC threshold and the active wake-up enable bit is set, and sending the SOC and voltage of the low-voltage battery pack to the rear domain controller, further includes the following steps: When the rear domain controller receives the SOC and voltage of the low-voltage battery pack, filtering the SOC and voltage of the low-voltage battery pack to obtain the filtered SOC and voltage of the low-voltage battery pack; When the SOC of the low-voltage battery pack is less than the charging SOC threshold, or the voltage of the low-voltage battery pack is less than the charging voltage threshold, the rear domain controller is controlled to generate a charging request, and the rear domain controller is used to send a wake-up message to the vehicle controller and the front domain controller to wake up the vehicle controller and the front domain controller and initialize them, including the following steps: When the SOC of the filtered low-voltage battery pack is less than the charging SOC threshold, or the voltage of the filtered low-voltage battery pack is less than the charging voltage threshold, the rear domain controller is controlled to generate a charging request, and the rear domain controller is used to send a wake-up message to the vehicle controller and the front domain controller to wake up and initialize the vehicle controller and the front domain controller.

3. The method according to claim 2, characterized in that The controlling the rear domain controller to generate a power replenishment request, using the rear domain controller to send a wake-up message to the vehicle controller and the front domain controller, waking up the vehicle controller and the front domain controller and initializing them, includes the following steps: Using the back-end controller to modulate the target wake-up network segment flag signal to generate a wake-up message; Sending the wake-up message to the target network segment, so that the vehicle controller and the front domain controller receive the wake-up message in the target network segment, wherein the vehicle controller and the front domain controller are configured such that when the vehicle controller and the front domain controller receive the wake-up message in the target network segment, the vehicle controller and the front domain controller are awakened and initialized; According to the target wake-up network segment flag signal, the front domain controller is used to wake up the corresponding downstream network segment.

4. The method according to claim 1, characterized in that The method of using the vehicle controller and the high-voltage battery pack to supplement the low-voltage battery pack includes the following steps: When the vehicle controller receives a power replenishment request, it determines whether the high-voltage conditions are met. If the high-voltage conditions are met, it controls the closing of the main positive and negative relays to complete the high-voltage power-on. The control voltage conversion unit converts the output high voltage of the power battery into a preset low voltage to charge the low voltage battery pack.

5. The method according to claim 4, characterized in that The upper high pressure condition includes: The voltage of the low-voltage battery is greater than a voltage threshold, and, The battery management system and vehicle controller have no upper high voltage faults, the battery management unit, RMCU and charging and discharging distribution unit have no interlocking faults, and, There is no level 3 fault in the battery cooling circuit and the motor speed is less than 300rpm.

6. The method according to claim 1, characterized in that The following steps are also included: After the vehicle controller receives the power replenishment request, when the response time of the voltage conversion module is greater than the response time threshold, or, When the SOC of the low-voltage battery pack is greater than the charging exit SOC threshold, and the output current of the voltage conversion module is less than the charging current threshold, or, When the current of the low-voltage battery pack is less than the lower threshold of the charging current and the duration exceeds the duration threshold, the vehicle is not charging in the usage scenario, and the SOC of the low-voltage battery pack is not less than the preset SOC lower limit, or, When the communication of the low-voltage battery SOC, voltage or current is lost, The rear domain controller is used to generate a power replenishment exit request and send it to the vehicle controller to stop the vehicle controller and the high-voltage battery pack from replenishing the low-voltage battery pack.

7. The method according to claim 1, characterized in that: The following steps are also included: When the vehicle controller receives the power replenishment request and the response time of the voltage conversion module is greater than the response time threshold, it is determined that the power replenishment pre-failure; When the number of power replenishment failures exceeds the threshold, it is determined as power replenishment failure and active wake-up is disabled; When the back-end controller is awakened to high voltage through the network, hard line or power-on, the active awakening enable bit is set.

8. The method according to claim 7, characterized in that: The following steps are also included: When the power replenishment fails or the power replenishment is exited, the back-end controller is used to send a deep sleep request to each electrical load module to control each electrical load module to enter a deep sleep state.

9. A power supply device, characterized in that: include: A monitoring module is used to continuously monitor the SOC and voltage of the low-voltage battery pack, and when the SOC of the low-voltage battery pack is less than the charging SOC threshold and the active wake-up enable bit is set, the back-end controller is woken up and the SOC and voltage of the low-voltage battery pack are sent to the back-end controller; An active wake-up module, used to control the rear domain controller to generate a replenishment request when the SOC of the low-voltage battery pack is less than the replenishment SOC threshold, or the voltage of the low-voltage battery pack is less than the replenishment voltage threshold, and use the rear domain controller to send a wake-up message to the vehicle controller and the front domain controller to wake up and initialize the vehicle controller and the front domain controller; The power replenishment control module is used to use the rear domain controller to send a power replenishment request to the vehicle controller, and use the vehicle controller and the high-voltage battery pack to replenish the low-voltage battery pack.

10. A computer storage medium, characterized in that: The computer storage medium stores computer executable instructions, which, when executed, implement the service-oriented high-voltage adjustment power replenishment method described in any one of claims 1 to 8.

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