CN114851866A

CN114851866A - Storage battery power supplementing method and device, vehicle control unit and storage medium

Info

Publication number: CN114851866A
Application number: CN202210526874.5A
Authority: CN
Inventors: 朱庆良; 张昕睿; 赵继岭; 陈承鹤; 吴平; 史香云; 李育礼; 黄玮
Original assignee: Hechuang Automotive Technology Co Ltd
Current assignee: Hechuang Automotive Technology Co Ltd
Priority date: 2022-05-16
Filing date: 2022-05-16
Publication date: 2022-08-05

Abstract

The application relates to a storage battery power supplementing method, a storage battery power supplementing device, a vehicle control unit, a storage medium and a computer program product. The method comprises the following steps: responding to a storage battery power supplementing request sent by a remote control unit, and if the target vehicle is detected to meet the power supplementing condition, supplementing power to the storage battery of the target vehicle; determining the current power supplementing duration and the current battery voltage corresponding to the current time of the storage battery; inputting the current power supplementing duration and the current battery voltage into a preset first electric quantity prediction function to obtain the current remaining electric quantity corresponding to the current moment of the storage battery; the first electric quantity prediction function is obtained according to corresponding first relation curves of the storage battery under different preset residual electric quantities; the first relation curve is a relation curve between the battery voltage and the residual electric quantity in the process that the storage battery starts to supplement the electricity from the preset residual electric quantity; and if the current residual electric quantity is greater than or equal to the preset electric quantity threshold value, stopping supplementing the electricity to the storage battery. By adopting the method, the energy consumption of the vehicle can be reduced.

Description

Storage battery power supplementing method and device, vehicle control unit and storage medium

Technical Field

The present application relates to the field of automotive technologies, and in particular, to a battery recharging method and apparatus, a vehicle control unit, a storage medium, and a computer program product.

Background

With the rapid development of automobile technology, new energy automobiles mainly comprising electric automobiles have gradually opened the market and enter the lives of people. After the whole new energy automobile is powered off, the low-voltage storage battery can be discharged due to the existence of dark current, and when the automobile is placed for a long time and is not used, even the storage battery is fed, so that the automobile cannot be started normally.

At present, many new energy automobiles adopt a storage battery sensor to monitor the voltage of a storage battery, and the electricity supplementing time is adjusted according to different storage battery voltage ranges.

Therefore, the conventional technology has the problem of high vehicle energy consumption in the process of replenishing the electricity of the storage battery.

Disclosure of Invention

In view of the above, it is necessary to provide a battery recharging method, a battery recharging apparatus, a vehicle control unit, a computer-readable storage medium, and a computer program product, which can solve the problem of high vehicle energy consumption during the recharging process of the battery.

In a first aspect, the application provides a method for supplementing electricity for a storage battery. The method comprises the following steps:

responding to a storage battery power supplementing request sent by a remote control unit, and if detecting that a target vehicle meets the power supplementing condition, supplementing power to a storage battery of the target vehicle;

determining the current power supplementing duration and the current battery voltage corresponding to the current time of the storage battery;

inputting the current power supply duration and the current battery voltage to a preset first electric quantity prediction function to obtain the current remaining electric quantity corresponding to the current moment of the storage battery; the first electric quantity prediction function is obtained according to corresponding first relation curves of the storage battery under different preset residual electric quantities; the first relation curve is a relation curve between the battery voltage and the residual capacity in the process that the storage battery starts to supplement the power from the preset residual capacity;

and if the current residual electric quantity is greater than or equal to a preset electric quantity threshold value, stopping supplementing the electricity to the storage battery.

In one embodiment, the method further comprises:

acquiring a first relation curve corresponding to the storage battery under each preset residual electric quantity;

fitting each first relation curve based on a linear least square fitting principle to obtain a first experimental formula corresponding to each preset residual electric quantity; the first empirical formula is an empirical formula between the battery voltage and the residual capacity in the process that the storage battery starts to supplement the power from the preset residual capacity;

and determining the preset first electric quantity prediction function according to each first experimental formula.

In one embodiment, the determining the preset first electric quantity prediction function according to each of the first empirical formulas includes:

determining a first fitting function according to each first empirical formula; the first fitting function is used for representing the mapping relation between the battery voltage and the residual electric quantity in the process that the storage battery starts to supplement the electricity from any residual electric quantity; each to-be-solved coefficient in the first fitting function is a to-be-solved function related to the power supplementing time length;

performing least square curve fitting on the first fitting function according to each coefficient in each first empirical formula, and determining a first function mapping relation between each coefficient to be solved and the power supplementing time;

determining a first functional relation according to each first function mapping relation and the first fitting function; the first functional relation is used for representing the mapping relation between the residual electric quantity and the electricity supplementing duration and between the battery voltages in the electricity supplementing process of the storage battery;

and determining the first electric quantity prediction function through the first functional relation.

In one embodiment, the storage battery power supplementing request carries an initial battery voltage and a target standing time of the storage battery; the target standing time is the time interval between the awakening time of the power supply system and the latest power supply finishing time of the storage battery; the power supply system is a system formed by vehicle-mounted modules related to power supply; the method further comprises the following steps:

inputting the initial battery voltage and the target standing time to a preset second electric quantity prediction function to obtain the initial residual electric quantity of the storage battery; the second electric quantity prediction function is obtained according to corresponding second relation curves of the storage battery under different preset standing time lengths; the second relation curve is a relation curve between the open-circuit voltage and the residual electric quantity after the storage battery is placed for the preset standing time after discharging is finished;

and adjusting the whole vehicle control strategy according to the initial residual electric quantity.

In one embodiment, the method further comprises:

acquiring a second relation curve corresponding to the storage battery under each preset standing time;

fitting each second relation curve based on a linear least square fitting principle to obtain a corresponding second empirical formula under each preset standing time; the second empirical formula is an empirical formula between the open-circuit voltage and the residual electric quantity after the storage battery is statically placed for the preset static time after discharging is finished;

determining a second fitting function according to each second empirical formula; the second fitting function is used for representing the mapping relation between the open-circuit voltage and the residual electric quantity after the storage battery is placed for any standing time after discharging is finished; each to-be-solved coefficient in the second fitting function is a to-be-solved function related to the standing time length;

performing least square curve fitting on the second fitting function according to each coefficient in each second empirical formula, and determining a second function mapping relation between each coefficient to be solved and the standing time;

determining a second functional relation according to each second function mapping relation and the second fitting function; the second functional relation is used for representing the mapping relation between the residual electric quantity, the standing time and the open-circuit voltage of the storage battery in the standing state;

and determining the second electric quantity prediction function through the second functional relation.

In a second aspect, the application further provides a storage battery power supplementing method. The method comprises the following steps:

responding to a wake-up signal aiming at a remote control unit, and sending a network management message to a power supply system of a target vehicle to wake up the power supply system; the power supply system is a system formed by vehicle-mounted modules related to power supply;

if the power supplementing system is judged to meet the power supplementing initial condition and the initial battery voltage of the storage battery in the target vehicle is detected to meet the preset condition, generating a storage battery power supplementing request;

sending the storage battery power supplementing request to a whole vehicle control unit; the storage battery power supplementing request is used for controlling the power supplementing process of the storage battery by the finished automobile control unit according to the current residual power; the current residual electric quantity is obtained according to a preset first electric quantity prediction function; the first electric quantity prediction function is obtained according to a first relation curve corresponding to the storage battery under different preset residual electric quantities; the first relation curve is a relation curve between the battery voltage and the residual capacity in the process that the storage battery starts to supplement power from the preset residual capacity.

In a third aspect, the application further provides a storage battery power supply device. The device comprises:

the power supply module is used for responding to a storage battery power supply request sent by a remote control unit, and if the situation that a target vehicle meets the power supply condition is detected, the power supply module is used for supplying power to the storage battery of the target vehicle;

the determining module is used for determining the current power supplementing duration and the current battery voltage corresponding to the current time of the storage battery;

the input module is used for inputting the current power supplementing duration and the current battery voltage into a preset first electric quantity prediction function to obtain the current residual electric quantity corresponding to the current moment of the storage battery; the first electric quantity prediction function is obtained according to a first relation curve corresponding to the storage battery under different preset residual electric quantities; the first relation curve is a relation curve between the battery voltage and the residual capacity in the process that the storage battery starts to supplement the power from the preset residual capacity;

and the stopping module is used for stopping power supplement on the storage battery if the current residual electric quantity is greater than or equal to a preset electric quantity threshold value.

In a fourth aspect, the application also provides another storage battery power supply device. The device comprises:

the system comprises a first sending module, a second sending module and a control module, wherein the first sending module is used for responding to a wake-up signal aiming at a remote control unit and sending a network management message to a power supply system of a target vehicle so as to wake up the power supply system; the power supply system is a system formed by modules related to power supply;

the generating module is used for generating a storage battery power supplementing request if the power supplementing system is judged to meet the power supplementing initial condition and the initial battery voltage of the storage battery in the target vehicle is detected to meet the preset condition;

the second sending module is used for sending the storage battery power supplementing request to the whole vehicle control unit; the storage battery power supplementing request is used for controlling the power supplementing process of the storage battery by the finished automobile control unit according to the current residual power; the current residual electric quantity is obtained according to a preset first electric quantity prediction function; the first electric quantity prediction function is obtained according to corresponding first relation curves of the storage battery under different preset residual electric quantities; the first relation curve is a relation curve between the battery voltage and the residual capacity in the process that the storage battery starts to supplement power from the preset residual capacity.

In a fifth aspect, the application further provides a vehicle control unit. The vehicle control unit comprises a memory and a processor, wherein the memory stores a computer program, and the processor realizes the steps of the method when executing the computer program.

In a sixth aspect, the present application further provides a computer-readable storage medium. The computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method described above.

In a seventh aspect, the present application further provides a computer program product. The computer program product comprises a computer program which, when being executed by a processor, carries out the steps of the above-mentioned method.

According to the storage battery power supplementing method, the storage battery power supplementing device, the vehicle control unit, the storage medium and the computer program product, the storage battery of the target vehicle is supplemented if the target vehicle is detected to meet the power supplementing condition by responding to the storage battery power supplementing request sent by the remote control unit; determining the current power supplementing duration and the current battery voltage corresponding to the current time of the storage battery; inputting the current power supplementing duration and the current battery voltage into a preset first electric quantity prediction function to obtain the current remaining electric quantity corresponding to the current moment of the storage battery; the first electric quantity prediction function is obtained according to corresponding first relation curves of the storage battery under different preset residual electric quantities; the first relation curve is a relation curve between the battery voltage and the residual capacity in the process that the storage battery starts to supplement power from the preset residual capacity; if the current residual electric quantity is larger than or equal to the preset electric quantity threshold value, stopping supplementing the electricity to the storage battery; therefore, the electric quantity prediction function can be determined based on the first relation curve corresponding to the storage battery under different preset residual electric quantities, the current electricity supplementing time and the current battery voltage are input into the first relation curve to determine the electric quantity prediction function, the current residual electric quantity corresponding to the storage battery at the current moment can be accurately obtained, the electricity supplementing can be automatically stopped when the current residual electric quantity meets the preset condition, whether the storage battery is fully supplemented or not is accurately identified, the accuracy of the time for supplementing the storage battery is ensured, the storage battery is supplemented again without predicting the electricity supplementing time, the problem of high vehicle energy consumption caused by predicting the electricity supplementing time to be overlong can be avoided, and the vehicle energy consumption is reduced.

Drawings

FIG. 1 is a schematic flow chart of a method for supplementing power to a storage battery according to an embodiment;

FIG. 2 is a schematic flow chart of another method for recharging a battery according to one embodiment;

FIG. 3 is a schematic flow chart of a method for supplementing power to a storage battery according to another embodiment;

FIG. 4 is a block diagram of a process flow of a method for recharging a battery in accordance with one embodiment;

FIG. 5 is a block diagram illustrating an exemplary embodiment of an apparatus for recharging a battery;

FIG. 6 is a block diagram showing the structure of a battery charging apparatus according to another embodiment;

fig. 7 is an internal structural view of the vehicle control unit in one embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In one embodiment, as shown in fig. 1, a method for recharging a storage battery is provided and applied to a vehicle control unit of a target vehicle. In practical applications, the Vehicle Control Unit may also be named as a Vehicle Control Unit (VCU). In this embodiment, the method includes the steps of:

and step S110, responding to a storage battery power supplementing request sent by the remote control unit, and if the target vehicle is detected to meet the power supplementing condition, supplementing power to the storage battery of the target vehicle.

The remote control unit is a remote control unit in a target vehicle, and may also be named as a smart terminal (Tbox) in practical application.

The power supply condition at least includes that there is no fault affecting power-on, the battery pre-charge resistance state is normal, and the SOC (state of charge, which may also be named as remaining power) of the power battery meets a preset condition, for example, the SOC of the power battery is greater than or equal to a preset remaining power threshold (for example, the preset remaining power threshold is 10%), and the vehicle state is a non-collision state.

In practical application, the power supply condition can be named as an upper high-voltage condition.

In the concrete implementation, if the vehicle control unit receives a storage battery power supplement request sent by the remote control unit, whether a target vehicle meets a power supplement condition or not can be detected in response to the storage battery power supplement request, and if the target vehicle at least meets the following conditions is detected: the method comprises the steps that a fault influencing power-on does not exist, the state of the pre-charge resistance of the battery is normal, the SOC (state of charge, which can also be named as residual electric quantity) of the power battery meets a preset condition, and the vehicle state is a non-collision state, the target vehicle is judged to meet a power-on condition, and the whole vehicle control unit controls the high-voltage electricity on the whole vehicle to power up the storage battery of the target vehicle. If the target vehicle is judged not to meet the electricity supplementing condition, the electricity supplementing system enters the dormant state again and the operation is finished directly; the power supply system is a system formed by modules related to power supply.

And step S120, determining the current power supplementing duration and the current battery voltage corresponding to the current time of the storage battery.

In the specific implementation, in the power supplement process of the storage battery, the vehicle control unit can determine the power supplement time of the storage battery in real time and collect the battery voltage of the storage battery on line in real time, so that the vehicle control unit can determine the current power supplement time and the current battery voltage corresponding to the current time of the storage battery.

And step S130, inputting the current power supplementing time and the current battery voltage into a preset first electric quantity prediction function to obtain the current residual electric quantity corresponding to the current moment of the storage battery.

The first electric quantity prediction function is obtained according to a first relation curve corresponding to the storage battery under different preset residual electric quantities.

The first relation curve is a relation curve between the battery voltage and the residual capacity in the process that the storage battery starts to supplement power from the preset residual capacity.

In specific implementation, the vehicle control unit may obtain a preset first electric quantity prediction function, the first electric quantity prediction function is obtained according to a first relation curve corresponding to the storage battery under different preset residual electric quantities, the first relation curve is a relation curve between a battery voltage and a residual electric quantity in a process that the storage battery starts to be charged from the preset residual electric quantity, and each first relation curve is fitted based on a linear least square fitting principle, so that the first electric quantity prediction function can be obtained. The first electric quantity prediction function defines the mapping relation between the residual electric quantity and the electricity supplementing time length of the storage battery in the electricity supplementing process and the battery voltage, the current electricity supplementing time length and the current battery voltage are input into the preset first electric quantity prediction function, and the current residual electric quantity corresponding to the storage battery at the current moment can be obtained.

In step S140, if the current remaining power is greater than or equal to the preset power threshold, the power compensation for the storage battery is stopped.

In the specific implementation, the vehicle control unit can detect whether the current residual electric quantity is greater than or equal to a preset electric quantity threshold value or not in real time, if the current residual electric quantity is greater than or equal to the preset electric quantity threshold value or not, the vehicle control unit controls the high-voltage electricity under the vehicle to stop supplying electricity to the storage battery, and otherwise, the vehicle control unit continues to control the high-voltage electricity on the vehicle to supply electricity to the storage battery.

Specifically, the preset charge threshold may be 99.9%, which is not limited herein. The preset electric quantity threshold value can be flexibly adjusted according to a vehicle control strategy so as to flexibly control the power supplementing time of the storage battery.

In the storage battery power supplementing method, by responding to a storage battery power supplementing request sent by a remote control unit, if a target vehicle is detected to meet power supplementing conditions, power supplementing is carried out on a storage battery of the target vehicle; determining the current power supplementing duration and the current battery voltage corresponding to the current time of the storage battery; inputting the current power supplementing duration and the current battery voltage into a preset first electric quantity prediction function to obtain the current remaining electric quantity corresponding to the current moment of the storage battery; the first electric quantity prediction function is obtained according to corresponding first relation curves of the storage battery under different preset residual electric quantities; the first relation curve is a relation curve between the battery voltage and the residual capacity in the process that the storage battery starts to supplement power from the preset residual capacity; if the current residual electric quantity is larger than or equal to the preset electric quantity threshold value, stopping supplementing the electricity to the storage battery; therefore, the electric quantity prediction function can be determined based on the first relation curve corresponding to the storage battery under different preset residual electric quantities, the current electricity supplementing time and the current battery voltage are input into the first relation curve to determine the electric quantity prediction function, the current residual electric quantity corresponding to the storage battery at the current moment can be accurately obtained, the electricity supplementing can be automatically stopped when the current residual electric quantity meets the preset condition, whether the storage battery is fully supplemented or not is accurately identified, the accuracy of the time for supplementing the storage battery is ensured, the storage battery is supplemented again without predicting the electricity supplementing time, the problem of high vehicle energy consumption caused by predicting the electricity supplementing time to be overlong can be avoided, and the vehicle energy consumption is reduced.

In one embodiment, the method further comprises: acquiring a first relation curve corresponding to each preset residual electric quantity of the storage battery; fitting each first relation curve based on a linear least square fitting principle to obtain a corresponding first experimental formula under each preset residual capacity; and determining a preset first electric quantity prediction function according to each first empirical formula.

The first empirical formula is an empirical formula between the battery voltage and the residual capacity in the process that the storage battery starts to supplement the power from the preset residual capacity.

In a specific implementation, the vehicle control unit may obtain first relationship curves corresponding to the preset remaining capacities of the battery, for example, obtain first relationship curves corresponding to the preset remaining capacities of the battery of a%, b%, and c% (e.g., 60%, 80%, and 90%), which are three first relationship curves in total.

And then, fitting each first relation curve based on a linear least square fitting principle to obtain a corresponding first experimental formula under each preset residual capacity, wherein the first experimental formula is an empirical formula between the battery voltage and the residual capacity in the process that the storage battery starts to supplement power from the preset residual capacity.

In practical application, the three first relation curves are fitted based on a linear least square fitting principle, and the obtained first empirical formula corresponding to each preset residual capacity can be as follows:

therein, SOC _a 、SOC _b 、SOC _c Respectively represents the residual electric quantity in the process of starting power supply from a%, b% and c% of the preset residual electric quantity, and the OCV _s Representing the cell voltage, τ _n3 、τ _n2 、τ _n1 、τ _n0 And (n ═ a, b, c) is a constant.

Finally, according to the corresponding first experimental formula under each preset residual capacity, the mapping relation between the battery voltage and the residual capacity in the process that the storage battery starts to supplement power from any residual capacity is determined, and the preset first electric quantity prediction function is determined based on the mapping relation.

According to the technical scheme of the embodiment, a first relation curve corresponding to each preset residual electric quantity of the storage battery is obtained; fitting each first relation curve based on a linear least square fitting principle to obtain a corresponding first experimental formula under each preset residual capacity; the first empirical formula is an empirical formula between the battery voltage and the residual capacity in the process that the storage battery starts to supplement power from the preset residual capacity; determining a preset first electric quantity prediction function according to each first experimental formula; therefore, the empirical formula between the battery voltage and the residual capacity in the process of starting the electricity supplement of the storage battery from the preset residual capacity can be accurately obtained on the basis of the linear least square fitting principle, so that the mutual relation between the battery voltage and the residual capacity in the process of starting the electricity supplement of the storage battery from the preset residual capacity can be determined, the calculation method of the residual capacity can be accurately determined on the basis of the mutual relation, and the reliability of the first electric quantity prediction function is guaranteed.

In one embodiment, determining the preset first electric quantity prediction function according to each first empirical formula includes: determining a first fitting function according to each first empirical formula; performing least square curve fitting on the first fitting function according to each coefficient in each first empirical formula, and determining a first function mapping relation between each coefficient to be solved and the power supply time; determining a first function relational expression according to the first function mapping relations and the first fitting functions; a first electrical quantity prediction function is determined from the first functional relationship.

The first fitting function is used for representing the mapping relation between the battery voltage and the residual capacity in the process that the storage battery starts to supplement power from any residual capacity.

And each to-be-solved coefficient in the first fitting function is a to-be-solved function related to the power supplementing time length.

The first functional relation is used for representing the mapping relation between the residual electric quantity and the electricity supplementing duration of the storage battery in the electricity supplementing process and the battery voltage.

In the concrete implementation, the vehicle control unit may determine a first fitting function according to each first empirical formula in the process of determining a preset first electric quantity prediction function according to each first empirical formula, where the first fitting function is used to represent a mapping relationship between a battery voltage and a remaining electric quantity in the process of starting power supplement of the storage battery from any remaining electric quantity, and each to-be-solved coefficient in the first fitting function is a to-be-solved function related to power supplement duration.

In practice, the first fitting function may be as follows:

therein, SOC _chg Represents the residual capacity in the power supply process, s ₃ (t)、s ₂ (t)、s ₁ (t)、s ₀ And (t) the coefficients to be solved in the first fitting function are to-be-solved functions related to the power supplementing time length, and t represents the power supplementing time length.

And then, performing least square curve fitting on the first fitting function according to each coefficient in each first empirical formula, and determining a first function mapping relation between each coefficient to be solved and the power supplementing time length.

In practical applications, the first empirical formula may be as follows:

The first function mapping relationship between each coefficient to be solved and the power supplementing time length can be as follows:

wherein A is _n 、B _n 、C _n (n is 0, 1, 2, 3) is a constant.

And then, according to the first function mapping relations and the first fitting functions, a first function relation can be determined, the first function relation defines the mapping relations between the residual electric quantity and the electricity supplementing time length of the storage battery in the electricity supplementing process and between the residual electric quantity and the battery voltage, and therefore the corresponding residual electric quantity of the storage battery can be determined according to the electricity supplementing time length and the battery voltage corresponding to any time in the electricity supplementing process of the storage battery. Specifically, a first time between each coefficient to be solved and the power supply time is setSubstituting the function mapping relation into the first fitting function to obtain the residual electric quantity SOC in the electricity supplementing process _chg And the power supply time t and the battery voltage OCV _s The mapping relationship between them.

Finally, a first electric quantity prediction function can be determined by the first functional relation, and the first electric quantity prediction function is as follows:

wherein, tau ₃ 、τ ₂ 、τ ₁ 、τ ₀ And representing a coefficient related to the power supply time t in the power supply process.

According to the technical scheme of the embodiment, a first fitting function is determined according to each first empirical formula; the first fitting function is used for representing the mapping relation between the battery voltage and the residual electric quantity in the process that the storage battery starts to supplement the electricity from any residual electric quantity, and each to-be-solved coefficient in the first fitting function is a to-be-solved function related to electricity supplementing duration; performing least square curve fitting on the first fitting function according to each coefficient in each first empirical formula, and determining a first function mapping relation between each coefficient to be solved and the power supply time; determining a first function relational expression according to the first function mapping relations and the first fitting functions; the first function relation is used for representing the mapping relation between the residual electric quantity and the electricity supplementing duration and between the battery voltages in the electricity supplementing process of the storage battery; determining a first electric quantity prediction function through a first function relation; therefore, the mapping relation between the residual electric quantity of the storage battery, the electricity supplementing time and the battery voltage in the electricity supplementing process can be determined through the first electric quantity prediction function, the current residual electric quantity can be accurately determined through acquiring the current electricity supplementing time and the current battery voltage of the storage battery, the battery state of the storage battery at the current moment can be accurately determined, and whether the electric quantity of the storage battery reaches the preset electric quantity threshold value at the current moment can be accurately identified.

In one embodiment, the storage battery power supplementing request carries an initial battery voltage and a target standing time of the storage battery; the method further comprises the following steps: inputting the initial battery voltage and the target standing time to a preset second electric quantity prediction function to obtain the initial residual electric quantity of the storage battery; and adjusting the whole vehicle control strategy according to the initial residual electric quantity.

The initial cell voltage is an open circuit voltage of the storage battery in a static state before the power supply of the storage battery is started.

And the target standing time is the time interval between the awakening time of the power supply system and the latest power supply finishing time of the storage battery.

The power supply system is a system formed by vehicle-mounted modules related to power supply.

And the second electric quantity prediction function is obtained according to corresponding second relation curves of the storage battery under different preset standing time lengths.

And the second relation curve is a relation curve between the open-circuit voltage and the residual electric quantity after the storage battery is placed statically for a preset standing time after discharging is finished.

In the specific implementation, a storage battery power supplement request sent by a remote control unit carries the initial battery voltage and the target standing time of a storage battery; the target standing time is the time interval between the awakening time of the electricity supplementing system and the latest electricity supplementing finishing time of the storage battery, namely the time interval between the awakening time of the electricity supplementing system and the last vehicle low-voltage time, and the electricity supplementing system is a system formed by vehicle-mounted modules related to electricity supplementing.

The whole vehicle control unit can obtain a preset second electric quantity prediction function, and the second electric quantity prediction function is obtained according to corresponding second relation curves of the storage battery under different preset standing time lengths; the second relation curve is a relation curve between the open-circuit voltage and the residual electric quantity after the storage battery is placed statically for a preset standing time after discharging is finished, and each second relation curve is fitted based on a linear least square fitting principle, so that a second electric quantity prediction function can be obtained. The second electric quantity prediction function defines a mapping relation between the residual electric quantity of the storage battery in a standing state, the standing time and the open-circuit voltage, and the initial battery voltage and the target standing time are input into the preset second electric quantity prediction function, so that the initial residual electric quantity of the storage battery can be obtained. It is understood that the initial cell voltage corresponds to the open circuit voltage of the battery.

The vehicle control unit can adjust a vehicle control strategy according to the initial residual electric quantity. In particular, in the case of secondary batteries, both overcharge and overdischarge may cause permanent damage to the secondary battery, severely shortening the service life of the battery. If the accurate residual electric quantity value can be provided, the whole vehicle control strategy can control the residual electric quantity within a certain range (such as 20-80%), so that the function of preventing the battery from being overcharged or overdischarged is achieved, the normal use of the battery is ensured, the service life of the battery is prolonged, and the performance of the whole vehicle is improved.

According to the technical scheme of the embodiment, the initial residual electric quantity of the storage battery is obtained by inputting the initial battery voltage and the target standing time into a preset second electric quantity prediction function; adjusting a vehicle control strategy according to the initial residual electric quantity; therefore, the electric energy provided by the battery can be reasonably utilized by the adjusted vehicle control strategy, the storage battery can be timely and accurately adjusted and maintained, the irreparable damage caused by the overcharge of the storage battery is prevented, and the cycle service life of the storage battery is prolonged.

In one embodiment, the method further comprises: acquiring a second relation curve corresponding to the storage battery under each preset standing time; fitting each second relation curve based on a linear least square fitting principle to obtain a corresponding second empirical formula under each preset standing time; determining a second fitting function according to each second empirical formula; performing least square curve fitting on the second fitting function according to each coefficient in each second empirical formula, and determining a second function mapping relation between each coefficient to be solved and the standing time; determining a second function relational expression according to the second function mapping relations and the second fitting functions; and determining a second electric quantity prediction function through the second functional relation.

And the second empirical formula is an empirical formula between the open-circuit voltage and the residual electric quantity after the storage battery is statically placed for a preset static time after discharging is finished.

And the second fitting function is used for representing the mapping relation between the open-circuit voltage and the residual electric quantity after the storage battery is placed for any standing time after discharging is finished.

And each to-be-solved coefficient in the second fitting function is a to-be-solved function related to the standing time length.

And the second functional relation is used for representing the mapping relation between the residual capacity of the storage battery in the standing state, the standing time and the open-circuit voltage.

In a specific implementation, the vehicle control unit may obtain a second relation curve corresponding to the storage battery under different preset standing time durations, for example, obtain a relation curve between three corresponding open-circuit voltages and the remaining electric quantity after the storage battery is left standing for a, b, and c hours after discharging is completed.

And then fitting each second relation curve based on a linear least square fitting principle to obtain a corresponding second empirical formula under each preset standing time, wherein the second empirical formula is an empirical formula between the open-circuit voltage and the residual capacity after the storage battery is subjected to standing for the preset standing time after the discharge of the storage battery is finished. The form of the second empirical formula is the same as that of the first empirical formula, and is not described herein again.

Then, a second fitting function can be determined based on a second empirical formula corresponding to each preset standing time, the second fitting function is used for representing the mapping relation between the open-circuit voltage and the residual capacity after the storage battery is left standing for any standing time after discharging is finished, and each to-be-solved coefficient in the second fitting function is a to-be-solved function related to the standing time. The form of the second fitting function is the same as that of the first fitting function, and is not described herein again.

And then, performing least square curve fitting on the second fitting function according to each coefficient in each second empirical formula, and determining a second function mapping relation between each coefficient to be solved and the standing time. The form of the second function mapping relationship is the same as that of the first function mapping relationship, and is not described herein again.

And then, according to the second function mapping relations and the second fitting functions, a second function relation can be determined, wherein the second function relation is used for representing the mapping relations among the residual electric quantity, the standing time and the open-circuit voltage of the storage battery in the standing state, so that the initial residual electric quantity corresponding to the storage battery can be determined according to the standing time after the discharge of the storage battery is finished and the corresponding open-circuit voltage (equivalent to the initial battery voltage). Specifically, the second function mapping relationship between each to-be-solved coefficient and the standing time is substituted into the second fitting function, so that the mapping relationship between the remaining capacity of the storage battery in the standing state, the standing time and the open-circuit voltage can be obtained.

Finally, a second electric quantity prediction function can be determined by the second functional relation, and the second electric quantity prediction function is as follows:

wherein, tau ₃ 、τ ₂ 、τ ₁ 、τ ₀ Coefficient, OCV, representing the time period t of standing in the standing state _s Indicates the open circuit voltage (corresponding to the initial cell voltage in the state where the battery is left at rest), SOC, of the battery _int The remaining capacity of the battery in a static state (corresponding to the initial remaining capacity of the battery) is shown.

According to the technical scheme of the embodiment, a second relation curve corresponding to the storage battery under each preset standing time is obtained; fitting each second relation curve based on a linear least square fitting principle to obtain a corresponding second empirical formula under each preset standing time; the second empirical formula is an empirical formula between the open-circuit voltage and the residual electric quantity after the storage battery is placed for a preset standing time after discharging is finished; determining a second fitting function according to each second empirical formula; the second fitting function is used for representing the mapping relation between the open-circuit voltage and the residual electric quantity after the storage battery is placed for any standing time after discharging is finished, and each to-be-solved coefficient in the second fitting function is a to-be-solved function related to the standing time; performing least square curve fitting on the second fitting function according to each coefficient in each second empirical formula, and determining a second function mapping relation between each coefficient to be solved and the standing time; determining a second function relational expression according to the second function mapping relations and the second fitting functions; the second function relation is used for representing the mapping relation between the residual electric quantity, the standing time and the open-circuit voltage of the storage battery in the standing state; determining a second electric quantity prediction function through a second function relation; therefore, the mapping relation between the residual capacity of the storage battery in the standing state, the standing time and the open-circuit voltage can be determined through the second capacity prediction function, the initial residual capacity of the storage battery before the power compensation is started can be accurately determined through obtaining the initial battery voltage and the standing time of the storage battery in the standing state and according to the second capacity prediction function, and the accuracy of the initial residual capacity is guaranteed.

In another embodiment, as shown in fig. 2, another battery recharging method is provided and applied to a vehicle control unit of a target vehicle. In this embodiment, the method includes the steps of:

step S202, acquiring a first relation curve corresponding to each preset residual electric quantity of the storage battery.

And S204, fitting each first relation curve based on a linear least square fitting principle to obtain a corresponding first experimental formula under each preset residual capacity.

Step S206, determining a first fitting function according to each first empirical formula.

And S208, performing least square curve fitting on the first fitting function according to each coefficient in each first empirical formula, and determining a first function mapping relation between each coefficient to be solved and the power supplementing time.

Step S210, determining a first functional relation according to each first function mapping relation and the first fitting function.

In step S212, a first electric quantity prediction function is determined according to the first functional relation.

And step S214, responding to a storage battery power supplementing request sent by the remote control unit, and if the target vehicle is detected to meet the power supplementing condition, supplementing power to the storage battery of the target vehicle.

And step S216, determining the current power supplementing duration and the current battery voltage corresponding to the current time of the storage battery.

Step S218, inputting the current power supplement duration and the current battery voltage to a preset first power prediction function, so as to obtain a current remaining power corresponding to the current time of the storage battery.

In step S220, if the current remaining power is greater than or equal to the preset power threshold, the power compensation for the storage battery is stopped.

The specific limitations of the above steps can be referred to the above specific limitations of a method for replenishing power to a storage battery.

In another embodiment, as shown in fig. 3, a method for recharging a storage battery is provided, which is described by taking the method as an example of being applied to a remote control unit, and comprises the following steps:

step S310, responding to the awakening signal aiming at the remote control unit, and sending a network management message to the power supply system of the target vehicle to awaken the power supply system.

The remote control unit is a remote control unit in a target vehicle, and may be named as a smart terminal (Tbox) in practical application.

The power supply system may include a VCU (Vehicle Control Unit), a DCDC (direct current inverter), a BMS (battery management system), a CAN (Controller Area Network) bus, and Vehicle-mounted modules connected together by the CAN bus.

In the specific implementation, a timing module is integrated in a remote control unit for timing or timing in a software mode, when the timing time is up, the remote control unit receives a wake-up signal, the remote control unit responds to the wake-up signal and converts the sleep state into the wake-up state, and sends a network management message to a power supply system through a CAN network, and the power supply system receives the network management message and then converts the sleep state into the wake-up state.

In step S320, if it is determined that the power supply system meets the initial power supply condition and it is detected that the initial battery voltage of the storage battery in the target vehicle meets the preset condition, a storage battery power supply request is generated.

Wherein, the initial condition of power supply at least comprises: the SOC (state of charge, which may also be named as remaining capacity) of the power battery meets a preset condition, such as that the SOC of the power battery is greater than or equal to a preset remaining capacity threshold, the vehicle door is closed, the gear is in the P gear (parking gear), and the front hatch and the tailgate are closed.

In the concrete realization, the benefit electric system awakens the back up, and remote control unit can detect if the benefit electric system satisfies the initial benefit electric condition of benefit electricity, and the initial condition of benefit electricity includes at least: the SOC (state of charge, which may also be named as remaining capacity) of the power battery meets a preset condition, such as that the SOC of the power battery is greater than or equal to a preset remaining capacity threshold, the vehicle door is closed, the gear is in the P gear (parking gear), and the front hatch and the tailgate are closed; meanwhile, the remote control unit also detects whether the initial battery voltage of the storage battery in the target vehicle meets a preset condition, such as whether the initial battery voltage is lower than a preset voltage threshold.

And if the remote control unit judges that the electricity supplementing system meets the initial electricity supplementing condition and the initial cell voltage of the storage battery meets the preset condition, determining the target standing time of the storage battery, namely the time interval between the awakening time of the electricity supplementing system and the latest electricity supplementing finishing time of the storage battery, and generating a storage battery electricity supplementing request according to the initial cell voltage of the storage battery and the target standing time. And if the power supply system does not meet the initial power supply condition, the power supply system enters the dormant state again.

And step S330, sending a storage battery power supplementing request to the whole vehicle control unit.

In the specific implementation, the remote control unit can send a storage battery power supplementing request to the whole vehicle control unit, after the whole vehicle control unit receives the storage battery power supplementing request, the whole vehicle control unit can judge whether a target vehicle meets a high-voltage condition, and if so, the whole vehicle high-voltage condition is controlled to supplement power for the storage battery. The vehicle control unit can determine the current power supplement duration and the current battery voltage corresponding to the current time of the storage battery, input the current power supplement duration and the current battery voltage into a preset first power prediction function to obtain the current remaining power corresponding to the current time, and determine whether to continue to supplement power to the storage battery according to whether the current remaining power is greater than or equal to a preset power threshold. The first electric quantity prediction function is obtained according to corresponding first relation curves of the storage battery under different preset residual electric quantities; the first relation curve is a relation curve between the battery voltage and the residual capacity in the process that the storage battery starts to supplement power from the preset residual capacity.

Meanwhile, in the process of starting to control the high voltage of the whole vehicle, the whole vehicle control unit determines the initial residual electric quantity of the storage battery through a second electric quantity prediction function according to the initial battery voltage and the target standing time of the storage battery carried by the storage battery electricity supplementing request, so that a whole vehicle control strategy can be adjusted according to the initial residual electric quantity to prevent the storage battery from being overcharged.

In the storage battery power supplementing method, a network management message is sent to a power supplementing system of a target vehicle to wake up the power supplementing system by responding to a wake-up signal aiming at a remote control unit; if the power supplementing system is judged to meet the power supplementing initial condition and the initial battery voltage of the storage battery in the target vehicle is detected to meet the preset condition, generating a storage battery power supplementing request; sending a storage battery power supplementing request to a whole vehicle control unit; the storage battery power supplementing request is used for controlling the power supplementing process of the storage battery by the finished automobile control unit according to the current residual power; the current residual electric quantity is obtained according to a preset first electric quantity prediction function; the first electric quantity prediction function is obtained according to corresponding first relation curves of the storage battery under different preset residual electric quantities; the first relation curve is a relation curve between the battery voltage and the residual capacity in the process that the storage battery starts to supplement power from the preset residual capacity; so, can be when judging that the benefit electric system satisfies initial benefit condition and the initial battery voltage of battery satisfies the preset condition, send battery benefit power request to whole car the vehicle control unit to supply whole car the vehicle control unit to control the benefit electric process of battery according to current residual capacity, realized whether accurate discernment battery electric quantity is mended fully, need not to estimate to mend electric time again to the battery, avoid appearing because of estimating the problem that the vehicle energy consumption is high that the benefit electric time overlength leads to.

In order to facilitate understanding of those skilled in the art, fig. 4 provides a processing flow diagram of a method for supplementing power to a storage battery in practical application. As shown in fig. 4, the following is included:

the method comprises the following steps: after the high voltage is applied to the whole vehicle, the Tbox (remote control unit) patrols and wakes up at regular time.

Step two: and the Tbox sends a network management message to a power supply system of the target vehicle to wake up the power supply system.

Step three: the method comprises the steps that a Tbox detects whether the initial battery voltage of a storage battery in a target vehicle is smaller than a preset voltage threshold value and whether a power supply system meets power supply initial conditions; and if the power supply system does not meet the initial power supply condition, the power supply system enters the dormant state again, and the operation is finished directly.

Step four: if the initial battery voltage of a storage battery in the Tbox detection target vehicle is smaller than a preset voltage threshold and the power supplementing system meets the power supplementing initial condition, sending a storage battery power supplementing request to the whole vehicle controller; the storage battery power supplementing request carries the initial battery voltage and the target standing time of the storage battery.

Step five: the vehicle control unit judges whether the target vehicle meets a high-voltage condition, if so, a vehicle high-voltage flow is executed to charge the storage battery; and if not, the power supply system enters the dormant state again and the process is finished directly.

Step six: the vehicle control unit obtains the initial residual electric quantity SOC of the storage battery through a second electric quantity prediction function according to the initial battery voltage and the target standing time of the storage battery _int 。

Step seven: in the electricity supplementing process, the vehicle control unit can estimate the battery state of the storage battery on line according to the first electric quantity prediction function through the current battery voltage and the current electricity supplementing duration of the storage battery which are acquired in real time to obtain the current residual electric quantity SOC _chg 。

Step eight: and the vehicle control unit judges whether to stop supplying power to the storage battery according to the current residual electric quantity, if the current residual electric quantity is larger than or equal to a preset electric quantity threshold value, the power supply to the storage battery is stopped, a high-voltage process under the vehicle is executed, and if not, the power supply to the storage battery is continued.

Simultaneously, because this application need not to monitor the electric quantity of battery through battery sensor, can reduce the hardware to can reduce the cost.

It should be understood that, although the steps in the flowcharts related to the embodiments described above are shown in sequence as indicated by the arrows, the steps are not necessarily performed in sequence as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a part of the steps in the flowcharts related to the embodiments described above may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the execution order of the steps or stages is not necessarily sequential, but may be rotated or alternated with other steps or at least a part of the steps or stages in other steps.

Based on the same inventive concept, the embodiment of the application also provides a storage battery power supply device for realizing the storage battery power supply method. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the method, so that specific limitations in one or more embodiments of the storage battery power supply device provided below can be referred to as limitations on a storage battery power supply method in the above, and details are not repeated here.

In one embodiment, as shown in fig. 5, there is provided a battery charging apparatus including: a power-up module 510, a determination module 520, an input module 530, and a stop module 540, wherein:

the power supplement module 510 is configured to, in response to a battery power supplement request sent by a remote control unit, supplement power to a battery of a target vehicle if it is detected that the target vehicle meets a power supplement condition.

The determining module 520 is configured to determine a current power supplement duration and a current battery voltage corresponding to the current time of the storage battery.

An input module 530, configured to input the current power supplement duration and the current battery voltage to a preset first power prediction function, so as to obtain a current remaining power of the storage battery at the current time; the first electric quantity prediction function is obtained according to a first relation curve corresponding to the storage battery under different preset residual electric quantities; the first relation curve is a relation curve between the battery voltage and the residual capacity in the process that the storage battery starts to supplement power from the preset residual capacity.

And a stopping module 540, configured to stop power supplement for the storage battery if the current remaining power is greater than or equal to a preset power threshold.

In one embodiment, the apparatus further comprises: the first obtaining module is used for obtaining a corresponding first relation curve of the storage battery under each preset residual electric quantity; the first fitting module is used for fitting each first relation curve based on a linear least square fitting principle to obtain a corresponding first experimental formula under each preset residual electric quantity; the first empirical formula is an empirical formula between the battery voltage and the residual capacity in the process that the storage battery starts to supplement the power from the preset residual capacity; and the first determining submodule is used for determining the preset first electric quantity prediction function according to each first experimental formula.

In one embodiment, the first determining submodule is specifically configured to determine a first fitting function according to each of the first empirical formulas; the first fitting function is used for representing the mapping relation between the battery voltage and the residual electric quantity in the process that the storage battery starts to supplement the electricity from any residual electric quantity; each to-be-solved coefficient in the first fitting function is a to-be-solved function related to the power supplementing time length; performing least square curve fitting on the first fitting function according to each coefficient in each first empirical formula, and determining a first function mapping relation between each coefficient to be solved and the power supplementing time; determining a first functional relation according to each first function mapping relation and the first fitting function; the first functional relation is used for representing the mapping relation between the residual electric quantity and the electricity supplementing duration and between the battery voltages in the electricity supplementing process of the storage battery; and determining the first electric quantity prediction function through the first functional relation.

In one embodiment, the storage battery power supplementing request carries an initial battery voltage and a target standing time of the storage battery; the target standing time is the time interval between the awakening time of the power supply system and the latest power supply finishing time of the storage battery; the power supply system is a system formed by vehicle-mounted modules related to power supply; the device further comprises: the input submodule is used for inputting the initial battery voltage and the target standing time into a preset second electric quantity prediction function to obtain the initial residual electric quantity of the storage battery; the second electric quantity prediction function is obtained according to corresponding second relation curves of the storage battery under different preset standing time lengths; the second relation curve is a relation curve between the open-circuit voltage and the residual electric quantity after the storage battery is placed for the preset standing time after discharging is finished; and the adjusting module is used for adjusting the whole vehicle control strategy according to the initial residual electric quantity.

In one embodiment, the apparatus further comprises: the second acquisition module is used for acquiring a second relation curve corresponding to the storage battery under each preset standing time; the second fitting module is used for fitting each second relation curve based on a linear least square fitting principle to obtain a corresponding second empirical formula under each preset standing time; the second empirical formula is an empirical formula between the open-circuit voltage and the residual electric quantity after the storage battery is statically placed for the preset static time after discharging is finished; a second determining submodule, configured to determine a second fitting function according to each of the second empirical formulas; the second fitting function is used for representing the mapping relation between the open-circuit voltage and the residual electric quantity after the storage battery is placed for any standing time after discharging is finished; each to-be-solved coefficient in the second fitting function is a to-be-solved function related to the standing time length; the third determining submodule is used for performing least square curve fitting on the second fitting function according to each coefficient in each second empirical formula to determine a second function mapping relation between each coefficient to be solved and the standing time; the fourth determining submodule is used for determining a second functional relational expression according to the second function mapping relation and the second fitting function; the second functional relation is used for representing the mapping relation between the residual electric quantity, the standing time and the open-circuit voltage of the storage battery in the standing state; and the fifth determining submodule is used for determining the second electric quantity prediction function through the second function relation.

In another embodiment, as shown in fig. 6, there is provided a secondary battery charging apparatus including: a first sending module 610, a generating module 620 and a second sending module 630, wherein:

a first sending module 610, configured to send a network management packet to a power supply system of a target vehicle to wake up the power supply system in response to a wake-up signal for a remote control unit; the power supply system is a system formed by vehicle-mounted modules related to power supply;

the generating module 620 is configured to generate a storage battery power supplement request if it is determined that the power supplement system meets the power supplement initial condition and it is detected that the initial battery voltage of the storage battery in the target vehicle meets a preset condition;

the second sending module 630 is configured to send the battery power supplement request to the vehicle control unit; the storage battery power supplementing request is used for controlling the power supplementing process of the storage battery by the finished automobile control unit according to the current residual power; the current residual electric quantity is obtained according to a preset first electric quantity prediction function; the first electric quantity prediction function is obtained according to a first relation curve corresponding to the storage battery under different preset residual electric quantities; the first relation curve is a relation curve between the battery voltage and the residual capacity in the process that the storage battery starts to supplement power from the preset residual capacity.

The modules in the battery charging device can be wholly or partially realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the vehicle control unit, and can also be stored in a memory in the vehicle control unit in a software form, so that the processor can call and execute the corresponding operations of the modules.

In one embodiment, a vehicle control unit is provided, and the vehicle control unit may be a server, and the internal structure diagram of the vehicle control unit may be as shown in fig. 7. The vehicle control unit comprises a processor, a memory and a network interface which are connected through a system bus. Wherein, the processor of the vehicle control unit is used for providing calculation and control capability. The memory of the vehicle control unit comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The database of the vehicle control unit is used for storing electric quantity prediction function data. The network interface of the vehicle control unit is used for connecting and communicating with an external terminal through a network. The computer program is executed by a processor to implement a battery recharging method.

Those skilled in the art will appreciate that the configuration shown in fig. 7 is merely a block diagram of a portion of the configuration associated with the present application and does not constitute a limitation on the vehicle control unit to which the present application is applied, and that a particular vehicle control unit may include more or less components than those shown, or combine certain components, or have a different arrangement of components.

In one embodiment, a vehicle control unit is further provided, which includes a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the above method embodiments when executing the computer program.

In an embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method embodiments.

In an embodiment, a computer program product is provided, comprising a computer program which, when being executed by a processor, carries out the steps of the above-mentioned method embodiments.

It should be noted that, the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, presented data, etc.) referred to in the present application are information and data authorized by the user or sufficiently authorized by each party.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high-density embedded nonvolatile Memory, resistive Random Access Memory (ReRAM), Magnetic Random Access Memory (MRAM), Ferroelectric Random Access Memory (FRAM), Phase Change Memory (PCM), graphene Memory, and the like. Volatile Memory can include Random Access Memory (RAM), external cache Memory, and the like. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), for example. The databases referred to in various embodiments provided herein may include at least one of relational and non-relational databases. The non-relational database may include, but is not limited to, a block chain based distributed database, and the like. The processors referred to in the embodiments provided herein may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic devices, quantum computing based data processing logic devices, etc., without limitation.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. A method for supplementing power to a storage battery is characterized by comprising the following steps:

inputting the current power supply duration and the current battery voltage to a preset first electric quantity prediction function to obtain the current remaining electric quantity corresponding to the current moment of the storage battery; the first electric quantity prediction function is obtained according to a first relation curve corresponding to the storage battery under different preset residual electric quantities; the first relation curve is a relation curve between the battery voltage and the residual capacity in the process that the storage battery starts to supplement the power from the preset residual capacity;

2. The method of claim 1, further comprising:

fitting each first relation curve based on a linear least square fitting principle to obtain a first experimental formula corresponding to each preset residual electric quantity; the first empirical formula is an empirical formula between the battery voltage and the residual capacity in the process that the storage battery starts to supplement the electricity from the preset residual capacity;

3. The method of claim 2, wherein said determining said predetermined first charge prediction function according to each of said first empirical formulas comprises:

4. The method according to claim 1, wherein the battery recharging request carries an initial battery voltage and a target rest time length of the battery; the target standing time is the time interval between the awakening time of the power supply system and the latest power supply finishing time of the storage battery; the power supply system is a system formed by vehicle-mounted modules related to power supply; the method further comprises the following steps:

5. The method of claim 4, further comprising:

6. A method for supplementing power to a storage battery is characterized by comprising the following steps:

7. An electrical storage battery recharging device, said device comprising:

the input module is used for inputting the current power supplementing duration and the current battery voltage into a preset first electric quantity prediction function to obtain the current residual electric quantity corresponding to the current moment of the storage battery; the first electric quantity prediction function is obtained according to corresponding first relation curves of the storage battery under different preset residual electric quantities; the first relation curve is a relation curve between the battery voltage and the residual capacity in the process that the storage battery starts to supplement the power from the preset residual capacity;

8. An electrical storage battery recharging device, said device comprising:

the second sending module is used for sending the storage battery power supplementing request to the whole vehicle control unit; the storage battery power supplementing request is used for controlling the power supplementing process of the storage battery by the finished automobile control unit according to the current residual electric quantity; the current residual electric quantity is obtained according to a preset first electric quantity prediction function; the first electric quantity prediction function is obtained according to a first relation curve corresponding to the storage battery under different preset residual electric quantities; the first relation curve is a relation curve between the battery voltage and the residual capacity in the process that the storage battery starts to supplement power from the preset residual capacity.

9. A vehicle control unit comprising a memory and a processor, the memory storing a computer program, characterized in that the processor realizes the steps of the method of any one of claims 1 to 6 when executing the computer program.

10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 6.