CN114771344A

CN114771344A - Method, device, controller and medium for adjusting available power of power battery

Info

Publication number: CN114771344A
Application number: CN202110726776.1A
Authority: CN
Inventors: 高弘飞
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2022-07-22

Abstract

The disclosure relates to a method, a device, a controller and a medium for adjusting available power of a power battery. The method comprises the following steps: determining actual discharge power and available power of the power battery in real time, wherein the available power comprises peak power, first continuous power and second continuous power; if the actual discharge power is larger than the second continuous power, determining a first accumulated release energy and a first release energy threshold; and performing reduction adjustment on the peak power and the first continuous power at least according to the first accumulated release energy and the first release energy threshold value, so that the vehicle controls the discharge power of the power battery according to the adjusted peak power and the adjusted first continuous power. Based on the current accumulated discharge energy and the maximum discharge capacity of the power battery, namely limiting the available discharge power of the power battery, the over-discharge of the power battery can be effectively avoided, the service life of the power battery is prolonged, the discharge performance of the power battery can be exerted to the greatest extent, and the endurance mileage is increased.

Description

Method, device, controller and medium for adjusting available power of power battery

Technical Field

The disclosure relates to the technical field of new energy vehicles, in particular to a method, a device, a controller and a medium for adjusting available power of a power battery.

Background

With the popularization of new energy vehicles, users pay attention to the acceleration performance of vehicles, the endurance mileage in high and low temperature environments, the thermal runaway risk of power batteries and the service life of power batteries gradually, so that the power batteries can exert the performance to the maximum extent at a proper temperature and avoid overdischarge at the same time, the power batteries become a key point of power battery research, and the power monitoring of the power batteries is particularly important.

At present, the power monitoring of the power battery is mainly realized through the following modes: monitoring whether the actual discharge power of the power battery exceeds the peak power or the continuous power (for example, 2s peak power and 30s continuous power) in real time; if the actual discharge power of the power battery exceeds the peak power or the continuous power and the continuous time reaches the constraint use time (for example, 2s and 30s) of the corresponding power, the actually used discharge power is determined to exceed the capacity of the power battery, and then the discharge power of the power battery is reduced. However, the actual discharge power of the power battery is dynamically changed in real time, and jitter may occur near the peak power or the sustained power, so that the timing of the sustained duration may be advanced, and thus, when the actual sustained duration does not reach the constrained use duration of the corresponding power, the power reduction operation is triggered, and at this time, the maximum performance of the power battery is not fully exerted, thereby affecting the cruising range of the vehicle. In addition, when performing power-down operation, the battery power is still consumed, which may cause over-discharge of the battery.

Disclosure of Invention

In order to overcome the problems in the related art, the present disclosure provides a method, an apparatus, a controller and a medium for adjusting available power of a power battery.

In order to achieve the above object, in a first aspect, the present disclosure provides a method for adjusting available power of a power battery, including:

determining actual discharge power and available power of the power battery in real time, wherein the available power comprises peak power, first continuous power and second continuous power, and the constraint use duration of the first continuous power is smaller than that of the second continuous power;

if the actual discharge power is larger than the second continuous power, determining a first accumulated release energy of the power battery between the moment when the discharge power reaches the second continuous power for the first time and the current moment and a first release energy threshold value based on the first continuous power, wherein the first accumulated release energy is larger than or equal to zero, the first accumulated release energy is increased when the discharge power of the power battery is larger than the second continuous power, and the first accumulated release energy is decreased when the discharge power of the power battery is smaller than the second continuous power;

and performing reduction adjustment on the peak power and the first continuous power according to at least the first accumulated release energy and the first release energy threshold value, so that the vehicle controls the discharge power of the power battery according to the adjusted peak power and the adjusted first continuous power.

Optionally, in the case that the actual discharge power is greater than the second sustained power and less than the first sustained power, the performing a reduction adjustment on the peak power and the first sustained power according to at least the first accumulated released energy and the first released energy threshold includes:

adjusting both the peak power and the first sustained power to the second sustained power if the first accumulated released energy is greater than or equal to the first released energy threshold.

Optionally, in a case that the actual discharge power is greater than the first continuous power, the method further includes:

determining a second accumulated released energy of the power battery between the moment when the discharging power reaches the first continuous power for the first time and the current moment and a second released energy threshold value based on the peak power, wherein the second accumulated released energy is greater than or equal to zero, the second accumulated released energy is increased when the discharging power of the power battery is greater than the first continuous power, and the second accumulated released energy is decreased when the discharging power of the power battery is less than the first continuous power;

said de-modulating said peak power and said first sustained power based at least on said first accumulated released energy and said first released energy threshold comprises:

a decreasing adjustment is made to the peak power and the first sustained power based on the first cumulative released energy, the second cumulative released energy, the first released energy threshold, and the second released energy threshold.

Optionally, said reducing adjustments to said peak power and said first sustained power based on said first cumulative released energy, said second cumulative released energy, said first released energy threshold, and said second released energy threshold comprises:

adjusting the peak power to the first sustained power if the first accumulated released energy is less than the first released energy threshold and the second accumulated released energy is greater than or equal to the second released energy threshold;

re-determining a first accumulated released energy of the power battery between the moment when the discharge power reaches the second continuous power for the first time and the current moment and a first released energy threshold value based on the first continuous power;

determining whether the re-determined first cumulative released energy is greater than or equal to the re-determined first released energy threshold;

if the redetermined first accumulated released energy is smaller than the redetermined first released energy threshold value, returning to the step of redetermining the first accumulated released energy of the power battery between the moment when the discharge power reaches the second continuous power for the first time and the current moment and the first released energy threshold value based on the first continuous power;

and if the redetermined first accumulated release energy is larger than or equal to the redetermined first release energy threshold, adjusting the first continuous power and the adjusted peak power to the second continuous power.

Optionally, the downward adjustment of the peak power and the first sustained power according to the first cumulative released energy, the second cumulative released energy, the first released energy threshold, and the second released energy threshold further comprises:

Optionally, the determining is based on a first released energy threshold for the first sustained power, comprising:

wherein E is_{1 threshold value}Is the first released energy threshold; t1 is the current time; t0 is a time shifted forward from the current time t1 by a first preset time period, where the first preset time period is less than the constrained usage time period of the first continuous power; p₁The first continuous power; p₂The second continuous power;

the adjusting both the peak power and the first sustained power to the second sustained power comprises:

determining N times of the difference between the constraint use duration of the first continuous power and the first preset duration as a first adjusting duration, wherein N is more than 0 and less than or equal to 2;

determining a quotient of a first difference value and the first adjustment duration as a first adjustment rate, and determining a quotient of a second difference value and the first adjustment duration as a second adjustment rate, wherein the first difference value is a difference between the first continuous power and the second continuous power, and the second difference value is a difference between the peak power and the second continuous power;

gradually adjusting the first continuous power to the second continuous power according to the first adjustment rate, and gradually adjusting the peak power to the second continuous power according to the second adjustment rate.

Optionally, the method further comprises:

detecting whether the vehicle is in fault in real time;

if the vehicle fault is detected, acquiring a fault regulation rate when the vehicle is in fault;

the step-wise adjusting the first continuous power to the second continuous power according to the first adjustment rate and the step-wise adjusting the peak power to the second continuous power according to the second adjustment rate includes:

gradually adjusting the first continuous power to the second continuous power according to a maximum of the first adjustment rate and the fault adjustment rate, and gradually adjusting the peak power to the second continuous power according to a maximum of the second adjustment rate and the fault adjustment rate.

Optionally, the determining is based on a second released energy threshold for the peak power, comprising:

wherein E is_{2 threshold value}Is the second released-energy threshold; t1 is the current time; t2 is the time shifted forward from the current time t1 by a second preset time, the second preset time being less than the constrained use time of the peak power; p is₀Is the peak power; p₁Is the first continuous power;

the adjusting the peak power to the first continuous power comprises:

determining M times of the difference between the constrained use time length of the peak power and the second preset time length as a second adjusting time length, wherein M is more than 0 and less than or equal to 2;

determining a quotient of a third difference value and the second adjustment duration as a third adjustment rate, wherein the third difference value is a difference between the peak power and the first sustained power;

gradually adjusting the peak power to the first continuous power according to the third adjustment rate.

Optionally, the adjusting the adjusted peak power to the second continuous power includes:

judging whether the peak power is adjusted to the first continuous power;

if the peak power is not adjusted to the first continuous power, determining a quotient of a fourth difference value and a remaining adjustment duration of the peak power as a fourth adjustment rate, wherein the fourth difference value is a difference between the currently adjusted peak power and the second continuous power, and the remaining adjustment duration is a difference between the second adjustment duration and a duration spent on adjusting the peak power;

and gradually adjusting the peak power obtained after the current adjustment to the second continuous power according to the fourth adjustment rate.

determining whether the peak power has been adjusted to the first continuous power;

if the peak power is not adjusted to the first continuous power, determining a quotient of a fourth difference value and a first adjusting and adjusting time length as a fifth adjusting rate, wherein the fourth difference value is a difference between the currently adjusted peak power and the second continuous power, the first adjusting time length is N times of a difference between a constraint use time length of the first continuous power and a first preset time length, N is greater than 0 and less than or equal to 2, the first release energy threshold is maximum release energy calculated by the power battery based on the first continuous power within a first preset time length before the current time, and the first preset time length is less than the constraint use time length of the first continuous power;

and gradually adjusting the peak power obtained after the current adjustment to the second continuous power according to the fifth adjustment rate.

Optionally, the determining a first accumulated released energy of the power battery between a time when the discharging power first reaches the second continuous power and a current time comprises:

wherein E is_{1 accumulation}Releasing energy for the first accumulation; t1 is the current time; t3 is the powerThe battery is at the moment when the discharge power reaches the second continuous power for the first time; p is₂The second continuous power; u is the actual voltage of the power battery; i is the actual current of the power battery;

after the step of down-regulating the peak power and the first sustained power, the method further comprises:

re-determining a first accumulated released energy of the power battery between the moment when the discharge power reaches the second continuous power for the first time and the current moment;

determining whether the redetermined first cumulative released energy is equal to zero;

if the redetermined first accumulated released energy is not equal to zero, returning to the step of redetermining the first accumulated released energy of the power battery between the moment when the discharge power reaches the second continuous power for the first time and the current moment;

and if the redetermined first accumulated released energy is equal to zero, restoring the adjusted first continuous power into the first continuous power determined in real time.

Optionally, the determining a second accumulated released energy of the power battery between the time when the discharge power first reaches the first continuous power and the current time comprises:

wherein E is_{2 accumulation of}Releasing energy for the second accumulation; t1 is the current time; t4 is the moment when the discharge power of the power battery reaches the first continuous power for the first time; p₁The first continuous power; u is the actual voltage of the power battery; i is the actual current of the power battery;

after the step of down-adjusting the peak power and the first sustained power, the method further comprises:

re-determining a second accumulated released energy of the power battery between the moment when the discharge power first reaches the first continuous power and the current moment;

determining whether the redetermined second cumulative released energy is equal to zero;

if the second redetermined accumulated released energy is not equal to zero, returning to the step of redetermining the second accumulated released energy of the power battery between the moment when the discharge power reaches the first continuous power for the first time and the current moment;

and if the redetermined second accumulated released energy is equal to zero, restoring the adjusted peak power to the peak power determined in real time.

In a second aspect, the present disclosure provides a device for regulating available power of a power battery, including:

the first determination module is used for determining actual discharge power and available power of the power battery in real time, wherein the available power comprises peak power, first continuous power and second continuous power, and the constraint use time of the first continuous power is shorter than that of the second continuous power;

a second determining module, configured to determine, if the actual discharge power determined by the first determining module is greater than the second sustained power, a first accumulated release energy of the power battery between a time when the discharge power first reaches the second sustained power and a current time, and a first release energy threshold based on the first sustained power, where the first accumulated release energy is greater than or equal to zero, the first accumulated release energy is increased when the discharge power of the power battery is greater than the second sustained power, and the first accumulated release energy is decreased when the discharge power of the power battery is less than the second sustained power;

and the adjusting module is used for performing reduction adjustment on the peak power and the first continuous power at least according to the first accumulated release energy and the first release energy threshold determined by the second determining module, so that the vehicle can control the discharge power of the power battery according to the adjusted peak power and the adjusted first continuous power.

In a third aspect, the present disclosure provides a controller comprising:

a memory having a computer program stored therein; and

one or more processors configured to implement the method for adjusting available power of a power battery provided in the first aspect of the present disclosure when the computer program is executed by the one or more processors.

In a fourth aspect, the present disclosure provides a computer-readable storage medium, on which a computer program is stored, which, when executed by a processor, implements the method for regulating available power of a power battery as provided in the first aspect of the present disclosure.

In the technical scheme, the actual discharge power and the available power of the power battery are determined in real time, wherein the available power comprises peak power, first continuous power and second continuous power; if the actual discharge power is larger than the second continuous power, determining a first accumulated release energy of the power battery between the moment when the discharge power reaches the second continuous power for the first time and the current moment and a first release energy threshold value based on the first continuous power; and performing reduction adjustment on the peak power and the first continuous power at least according to the first accumulated release energy and the first release energy threshold value, so that the vehicle controls the discharge power of the power battery according to the adjusted peak power and the adjusted first continuous power. Based on the current accumulated discharge energy and the maximum discharge capacity of the power battery, the peak power and the first continuous power are reduced, namely the available discharge power of the power battery is limited, the over-discharge of the power battery can be effectively avoided, the service life of the power battery is prolonged, the discharge performance of the power battery can be furthest exerted, and the endurance mileage is increased.

Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

fig. 1 is a flow chart illustrating a method for regulating the available power of a power cell according to an exemplary embodiment.

FIG. 2 is a flow chart illustrating a method for available power regulation of a power cell in accordance with another exemplary embodiment.

FIG. 3 is a flow chart illustrating a method for available power regulation of a power cell in accordance with another exemplary embodiment.

FIG. 4 is a flow chart illustrating a method for available power regulation of a power cell in accordance with another exemplary embodiment.

Fig. 5 is a block diagram illustrating an available power regulation device for a power cell in accordance with an exemplary embodiment.

FIG. 6 is a schematic diagram illustrating a configuration of a controller, according to an exemplary embodiment.

Fig. 7 is a schematic illustration of a memory unit for portable or stationary implementation of the program code of the method according to the invention according to an exemplary embodiment.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

FIG. 1 is a flow chart illustrating a method for available power regulation of a power cell in accordance with an exemplary embodiment. As shown in fig. 1, the method includes S101 to S103.

In S101, the actual discharge power and the available power of the power battery are determined in real time.

In the present disclosure, the available power includes a peak power, a first continuous power, and a second continuous power. The constraint use duration of the first continuous power and the constraint use duration of the second continuous power are both smaller than the constraint use duration of the peak power, and the constraint use duration of the first continuous power is smaller than the constraint use duration of the second continuous power, namely the constraint use duration of the peak power, the constraint use duration of the first continuous power and the constraint use duration of the second continuous power are sequentially increased, and correspondingly, the peak power, the first continuous power and the second continuous power are sequentially reduced. The constraint service duration is the maximum duration of the power battery discharging according to the corresponding power, for example, the constraint duration of the peak power is the maximum duration of the power battery discharging according to the peak power.

When the vehicle is running, the maximum output power allowed by the power battery is the peak power, which is the power limit of the short period, and the first continuous power is the power limit of the long period.

Illustratively, the constrained usage period for peak power is 10s, the constrained usage period for first continuous power is 30s, and the constrained usage period for second continuous power is 100 s.

In addition, the actual discharge power of the power cell may be determined by:

and detecting the actual voltage and the actual current of the power battery in real time, and then taking the product of the actual voltage at the current moment and the actual current at the current moment as the actual discharge power of the power battery at the current moment.

And, the available power of the power cell may be determined by:

firstly, collecting the actual residual electric quantity and the actual temperature of a power battery; and then, determining target available power corresponding to the actual residual capacity and the actual temperature of the power battery according to the pre-constructed corresponding relation among the residual capacity of the power battery, the actual temperature of the power battery and the available power, and taking the target available power as the available power of the power battery at the current moment.

In S102, if the actual discharge power is greater than the second sustained power, a first accumulated release energy of the power battery between a time when the discharge power first reaches the second sustained power and a current time and a first release energy threshold based on the first sustained power are determined.

In the disclosure, the first release energy threshold is a maximum release energy calculated based on the first sustained power within a first preset time period before the current time, where the first preset time period is less than a constrained usage time period of the first sustained power, and illustratively, the constrained usage time period of the first sustained power is 30s, and the first preset time period is 28 s. If the actual discharge power of the power battery is less than or equal to the second continuous power, the power battery can be in a discharge state for a long time, and over-discharge is not easy to occur, and at the moment, reduction and adjustment of the available power of the power battery are not needed. When the actual power of the power battery is larger than the second continuous power, the battery may be overdischarged, and at this time, the available power of the power battery needs to be adjusted to be reduced, namely, the steps of determining the first accumulated release energy of the power battery between the moment when the discharge power reaches the second continuous power for the first time and the current moment and determining the first release energy threshold value based on the first continuous power are executed. The first accumulated released energy is greater than or equal to zero, namely, in the working process of the power battery, when the first accumulated released energy reaches zero and the discharge power of the power battery is less than the second continuous power, the first accumulated released energy is zero; and when the discharge power of the power battery is larger than the second continuous power, the first accumulated release energy is increased, and when the discharge power of the power battery is smaller than the second continuous power, the first accumulated release energy is decreased.

For example, a first accumulated released energy of the power battery between the time when the discharge power first reaches the second continuous power and the current time may be determined by the following equation (1):

wherein E is_{1 accumulation}Releasing energy for a first accumulation; t1 is the current time; t3 is the moment when the discharge power of the power battery reaches the second continuous power for the first time; p is₂Is a second continuous power; u is the actual voltage of the power battery at the moment t; and I is the actual current of the power battery at the time t.

In the calculation of E by means of integration_{1 accumulation of}In the process, if E_{1 accumulation of}To zero, U x I<P₂Then stop the integration and stop at Ux I>P₂When the number of the light sources is larger than the predetermined value,during the stop integration period, E_{1 accumulation of}0. And, at E_{1 accumulation of}If U is not zero, I>P₂Then integrate as positive, i.e. E_{1 accumulation}Increase if U x I<P₂Then the integral is negative, i.e. E_{1 accumulation}And decrease.

For example, the first released energy threshold based on the first sustained power may be determined by equation (2) below:

wherein, E_{1 threshold value}A first released energy threshold; t0 is the time shifted forward by the first preset time period from the current time t 1; p is₁Is a first sustained power; p is₂Is the second continuous power.

In S103, the peak power and the first sustained power are subjected to reduction adjustment at least according to the first accumulated release energy and the first release energy threshold, so that the vehicle controls the discharge power of the power battery according to the adjusted peak power and the adjusted first sustained power.

In the disclosure, after the peak power and the first continuous power are subjected to reduction adjustment, the vehicle limits and controls the discharge power of the power battery by taking the adjusted peak power and the adjusted second continuous power as discharge power limit values.

The following describes in detail a specific embodiment of the adjustment of the peak power and the first sustained power based on at least the first accumulated released energy and the first released energy threshold in S103.

In one embodiment, in the case that the actual discharge power is greater than the second sustained power and less than the first sustained power, the peak power and the first sustained power may be down-regulated according to the first cumulative released energy and the first released energy threshold. Specifically, if the first cumulative released energy is greater than or equal to the first released energy threshold, both the peak power and the first sustained power are adjusted to the second sustained power.

In this embodiment, in consideration of the extra output of the power reduction process during power control of the power battery, the first preset time period is set to a value smaller than the constrained use time period of the first continuous power, that is, the first release energy threshold is smaller than the maximum discharge capacity of the power battery, so that energy can be reserved for power consumption during the power reduction process to avoid over-discharge of the power battery.

In another embodiment, in the case that the actual discharge power is greater than the first sustain power, as shown in fig. 2, the method further includes S104.

In S104, a second accumulated released energy of the power battery between the moment when the discharge power first reaches the first continuous power and the current moment and a second released energy threshold value based on the peak power are determined.

At this time, in step S103, the peak power and the first sustained power may be adjusted to be decreased according to the first cumulative released energy, the second cumulative released energy, the first released energy threshold, and the second released energy threshold. The second release energy threshold is the maximum release energy calculated by the power battery based on the peak power within a second preset time before the current time, and the second preset time is smaller than the constrained use time of the peak power, for example, the constrained use time of the peak power is 10s, and the second preset time is 8 s. The second accumulated released energy is greater than or equal to zero, namely the second accumulated released energy is zero when the second accumulated released energy reaches zero and the discharge power of the power battery is less than the first continuous power in the working process of the power battery; and when the discharge power of the power battery is larger than the first continuous power, the second accumulated released energy is increased, and when the discharge power of the power battery is smaller than the first continuous power, the second accumulated released energy is decreased.

For example, the second accumulated released energy of the power battery between the time when the discharge power first reaches the first sustained power and the current time may be determined by the following equation (3):

wherein, E_{2 accumulation of}Releasing energy for a second accumulation; t4 is the time when the discharge power reaches the first continuous power for the first time.

In calculating E by means of integration_{2 accumulation of}In the process, if E_{2 accumulation of}Reaches zero, U I<P₁Then stop the integration and at Ux I>P₁When the integration is continued, during the period of stopping the integration, E_{2 accumulation of}0. And, at E_{2 accumulation of}If U is not zero, I>P₁Then integrate as positive, i.e. E_{2 accumulation of}Increase if U x I<P₁Then the integral is negative, i.e. E_{2 accumulation of}And decreases.

Illustratively, the second released-energy threshold based on peak power may be determined by equation (4) below, including:

wherein, E_{2 threshold value}A second released energy threshold; t2 is the time shifted forward by a second preset time period from the current time t 1; p₀Is the peak power.

The following describes the embodiment of adjusting both the peak power and the first continuous power to the second continuous power in detail. In particular, it can be implemented in various ways. In one embodiment, the peak power and the first continuous power may be directly adjusted to the second continuous power, i.e. both the peak power and the first continuous power are directly switched to the second continuous power.

In the above embodiment, the peak power and the first sustained power are directly switched to the second sustained power, so that the vehicle directly adjusts the power limit value to the second sustained power and controls the discharge power of the power battery, which may cause vehicle power collapse, generate strong setback, and affect the driving comfort of users. For this purpose, the peak power and the first continuous power can be controlled to smoothly transition to the second continuous power at a fixed regulation rate to avoid a strong jerk of the vehicle. Specifically, in another embodiment, the peak power and the first continuous power are both adjusted to the second continuous power by the following steps 1) to 3):

1) and determining N times of the difference between the constraint use duration of the first continuous power and the first preset duration as a first adjustment duration.

Where 0 < N ≦ 2, illustratively N ≦ 2.

2) And determining the quotient of the first difference and the first adjusting time length as a first adjusting speed, and determining the quotient of the second difference and the first adjusting time length as a second adjusting speed.

The first difference is the difference between the first continuous power and the second continuous power, and the second difference is the difference between the peak power and the second continuous power.

3) The first sustained power is adjusted to the second sustained power in steps at a first adjustment rate, and the peak power is adjusted to the second sustained power in steps at a second adjustment rate.

In addition, the method further comprises the following steps:

detecting whether the vehicle is in fault in real time;

and if the vehicle fault is detected, acquiring a fault regulation rate when the vehicle is in fault, wherein the fault regulation rate is a preset value.

At this time, the step 3) may gradually adjust the first continuous power to the second continuous power according to a maximum value of the first adjustment rate and the fault adjustment rate, and gradually adjust the peak power to the second continuous power according to a maximum value of the second adjustment rate and the fault adjustment rate. Therefore, the peak power and the first continuous power can be adjusted to the second continuous power as smoothly and quickly as possible, so that the power output of the power battery is reduced, the vehicle is decelerated as quickly as possible, and the safety problem caused by vehicle failure is avoided.

The following is a detailed description of the above-mentioned specific embodiment of the adjustment of the peak power and the first sustained power for decreasing according to the first cumulative released energy, the second cumulative released energy, the first released energy threshold and the second released energy threshold. Specifically, the method can be realized by the following steps (1) to (5):

(1) if the first cumulative released energy is less than the first released energy threshold and the second cumulative released energy is greater than or equal to the second released energy threshold, i.e., the second cumulative released energy reaches the corresponding energy limit before the first cumulative released energy, the peak power is adjusted to the first sustained power.

In the present disclosure, although the first cumulative released energy at the current time is smaller than the first released energy threshold, the first cumulative released energy may reach the first released energy threshold in the subsequent vehicle running operation, and for this reason, it is necessary to monitor whether the real-time first cumulative released energy reaches the real-time first released energy threshold, that is, to execute the following steps (2) and (3).

(2) And re-determining a first accumulated release energy of the power battery between the moment when the discharge power reaches the second continuous power for the first time and the current moment and a first release energy threshold value based on the first continuous power.

(3) It is determined whether the redetermined first cumulative released energy is greater than or equal to the redetermined first released energy threshold.

In the present disclosure, if the redetermined first accumulated released energy is smaller than the redetermined first released energy threshold, the step (2) is returned to and continuously executed until the redetermined first accumulated released energy is larger than or equal to the redetermined first released energy threshold, and then the following step (4) is executed.

(4) And adjusting the first continuous power and the adjusted peak power to be the second continuous power.

(5) If the first cumulative released energy is greater than or equal to the first released energy threshold, both the peak power and the first sustained power are adjusted to the second sustained power.

In the present disclosure, both the peak power and the first sustained power are adjusted to the second sustained power as long as the first cumulative released energy is greater than or equal to the first released energy threshold, regardless of whether the second cumulative released energy reaches the second released energy threshold.

It can be seen that in the above embodiment, if the second cumulative released energy reaches the corresponding energy limit before the first cumulative released energy, the peak power is first adjusted to the first sustained power, and then, when the first cumulative released energy reaches the corresponding energy limit, the peak power is adjusted to the second sustained power, and the first sustained power is adjusted to the second sustained power. And if the first accumulated released energy reaches the corresponding energy limit before the second accumulated released energy reaches the corresponding energy limit, or both the first accumulated released energy and the second accumulated released energy reach the corresponding energy limit, directly adjusting the peak power to the second continuous power, and simultaneously adjusting the first continuous power to the second continuous power.

In addition, in the above embodiment, in consideration of the additional output of the power reduction process during power control of the power battery, the second preset time period is set to a value of the constrained use time period smaller than the peak power, that is, the second release energy threshold is smaller than the maximum discharge capacity of the power battery, so that energy can be reserved for power consumption in the power reduction process to avoid over-discharge of the power battery.

The following is a detailed description of a specific embodiment of adjusting the peak power to the first sustained power in step (1) above.

In particular, it can be implemented in various ways. In one embodiment, the peak power may be directly adjusted to the first continuous power, i.e. the peak power is directly switched to the first continuous power.

In the above embodiment, the peak power is directly switched to the first continuous power, so that the vehicle directly adjusts the power limit value to the first continuous power, and controls the discharge power of the power battery, which may cause a sudden vehicle power drop, generate a strong suspension feeling, and affect the driving comfort of the user. For this reason, the peak power may be controlled to smoothly transition to the first continuous power at a fixed regulation rate to avoid strong jerk of the vehicle. Specifically, in another embodiment, the peak power is adjusted to the first continuous power by the following steps [1] to [3 ]:

[1] and determining M times of the difference between the constrained use duration of the peak power and the second preset duration as a second adjustment duration.

Where 0 < M ≦ 2, illustratively, M ═ 2.

[2] And determining the quotient of the third difference and the second adjusting time length as the third adjusting speed.

Wherein, the third difference is the difference between the peak power and the first continuous power.

[3] The peak power is adjusted step by step to the first sustained power at a third adjustment rate.

Similarly, if a vehicle fault is detected, the peak power may be gradually adjusted to the first continuous power according to a maximum of the third rate of adjustment and the fault rate of adjustment. Therefore, the peak power can be regulated to the first continuous power as smoothly and quickly as possible, so that the power output of the power battery is reduced, the vehicle is decelerated as quickly as possible, and the safety problem caused by vehicle failure is avoided.

During the step of adjusting the peak power to the first sustained power at the third adjustment rate, it may occur that the re-determined first accumulated released energy is greater than or equal to the re-determined first released energy threshold, at which point the adjustment of the peak power to the first sustained power needs to be stopped, after which the peak power is adjusted from the currently adjusted peak power to the second sustained power. Specifically, the step (4) may adjust the adjusted peak power to the second continuous power in various ways. In one embodiment, first, it is determined whether the peak power has been adjusted to the first sustained power; when the peak power has been adjusted to the first sustained power when the newly determined first cumulative released energy is greater than or equal to the newly determined first released energy threshold, then adjusting the peak power from the first sustained power to the second sustained power directly in a manner similar to the adjustment of the peak power to the second sustained power described above; and when the newly determined first accumulated release energy is greater than or equal to the newly determined first release energy threshold, if the peak power is not adjusted to the first continuous power, determining a quotient of a fourth difference value and the remaining adjustment time length of the peak power as a fourth adjustment rate, wherein the fourth difference value is the difference between the currently adjusted peak power and the second continuous power, and the remaining adjustment time length is the difference between the second adjustment time length and the time length spent for adjusting the peak power, and then gradually adjusting the currently adjusted peak power to the second continuous power according to the fourth adjustment rate. Therefore, the peak power can be quickly adjusted to the second continuous power to avoid over-discharge of the power battery, but the adjustment process is not smooth enough, so that the vehicle can be bumpy and the driving comfort of a user is influenced.

In another embodiment, first, it is determined whether the peak power has been adjusted to the first continuous power; when the newly determined first cumulative released energy is greater than or equal to the newly determined first released energy threshold, the peak power has been adjusted to the first sustained power, and the peak power is adjusted from the first sustained power to the second sustained power in a manner similar to the adjustment of the peak power to the second sustained power described above; when the newly determined first accumulated release energy is greater than or equal to the newly determined first release energy threshold, if the peak power is not adjusted to the first continuous power, determining a quotient of the fourth difference and the first adjustment duration determined in the step 1) as a fifth adjustment rate, and then gradually adjusting the currently adjusted peak power to the second continuous power according to the fifth adjustment rate. Therefore, the smoothness of the peak power regulation can be ensured, the phenomenon that the driving comfort of a user is influenced due to the fact that the vehicle is in a pause feeling is avoided, and the power battery is possibly overdischarged due to the fact that the total regulation time of the peak power is longer.

Similarly, if a vehicle fault is detected, the peak power obtained after the current adjustment may be adjusted to the second continuous power step by step according to the maximum value of the fourth adjustment rate and the fault adjustment rate, or the peak power obtained after the current adjustment may be adjusted to the second continuous power step by step according to the maximum value of the fifth adjustment rate and the fault adjustment rate. Therefore, the peak power obtained after adjustment can be adjusted to the second continuous power as smoothly and quickly as possible, so that the power output of the power battery is reduced, the vehicle is decelerated as quickly as possible, and the safety problem caused by vehicle faults is avoided.

FIG. 3 is a flow chart illustrating a method for available power regulation of a power cell in accordance with another exemplary embodiment. As shown in fig. 3, after S103, the method further includes S105 to S107.

In S105, the first accumulated released energy of the power battery between the time when the discharge power first reaches the second continuous power and the current time is determined again.

In S106, it is determined whether the newly determined first accumulated released energy is equal to zero.

If the redetermined first accumulated released energy is not equal to zero, returning to S105 to continue execution until the redetermined first accumulated released energy is zero, at which point S107 may be executed.

In S107, the adjusted first continuous power is restored to the first continuous power determined in real time.

After the adjusted first continuous power is recovered to the first continuous power determined in real time, the vehicle can determine the first continuous power in real time according to the actual temperature and the actual residual capacity of the power battery at the moment and the corresponding relation of the residual capacity of the power battery, the actual temperature of the power battery and the available power, and then control the discharge power of the power battery according to the first continuous power determined in real time, so that the dynamic performance of the whole vehicle is guaranteed.

FIG. 4 is a flow chart illustrating a method for available power regulation of a power cell in accordance with another exemplary embodiment. As shown in fig. 4, after S103, the method further includes S108 to S110.

In S108, the second accumulated released energy of the power battery between the moment when the discharge power first reaches the first continuous power and the current moment is determined again.

In S109, it is determined whether the newly determined second accumulated released energy is equal to zero.

If the second cumulative released energy is not equal to zero, the process returns to S108 to continue the process until the second cumulative released energy is zero, at which point S110 may be executed.

In S110, the adjusted peak power is restored to the peak power determined in real time.

After the adjusted peak power is restored to the real-time determined peak power, the vehicle can determine the peak power in real time according to the actual temperature and the actual remaining capacity of the power battery at the current moment and the corresponding relationship among the remaining capacity of the power battery, the actual temperature of the power battery and the available power, and further control the discharge power of the power battery according to the real-time determined peak power, so that the dynamic performance of the whole vehicle is guaranteed.

In addition, while the vehicle controls the discharge power of the power battery based on the adjusted peak power and the adjusted first sustained power during the period in which the peak power and the first sustained power are not restored to the available power determined in real time, the available power determined in real time is used when the first cumulative released energy, the second cumulative released energy, the first released energy threshold value, and the first released energy threshold value are calculated during this period. During the period that the peak power and the first continuous power are recovered to the available power determined in real time, the vehicle controls the discharge power of the power battery according to the peak power determined in real time and the first continuous power determined in real time.

Based on the same inventive concept, the disclosure also provides a device for adjusting the available power of the power battery. As shown in fig. 5, the apparatus 500 includes:

the first determining module 501 is configured to determine, in real time, an actual discharge power and an available power of the power battery, where the available power includes a peak power, a first continuous power, and a second continuous power, and a constrained usage duration of the first continuous power is smaller than a constrained usage duration of the second continuous power;

a second determining module 502, configured to determine, if the actual discharging power determined by the first determining module 501 is greater than the second continuous power, a first accumulated discharging energy of the power battery between a time when the discharging power first reaches the second continuous power and a current time, and a first discharging energy threshold based on the first continuous power, where the first accumulated discharging energy is greater than or equal to zero, the first accumulated discharging energy is increased when the discharging power of the power battery is greater than the second continuous power, and the first accumulated discharging energy is decreased when the discharging power of the power battery is less than the second continuous power;

an adjusting module 503, configured to perform a decreasing adjustment on the peak power and the first sustained power according to at least the first accumulated released energy and the first released energy threshold determined by the second determining module 502, so that the vehicle controls the discharging power of the power battery according to the adjusted peak power and the adjusted first sustained power.

In the technical scheme, the actual discharge power and the available power of the power battery are determined in real time, wherein the available power comprises peak power, first continuous power and second continuous power; if the actual discharge power is larger than the second continuous power, determining a first accumulated release energy of the power battery between the moment when the discharge power reaches the second continuous power for the first time and the current moment and a first release energy threshold value based on the first continuous power; and performing reduction adjustment on the peak power and the first continuous power at least according to the first accumulated release energy and the first release energy threshold value, so that the vehicle controls the discharge power of the power battery according to the adjusted peak power and the adjusted first continuous power. Based on the current accumulated discharge energy and the maximum discharge capacity of the power battery, the peak power and the first continuous power are reduced, namely the available discharge power of the power battery is limited, the power battery can be effectively prevented from being over-discharged, the service life of the power battery is prolonged, the discharge performance of the power battery can be furthest exerted, and the endurance mileage is increased.

Optionally, in a case that the actual discharge power is greater than the second sustained power and less than the first sustained power, the adjusting module 503 is configured to adjust both the peak power and the first sustained power to the second sustained power if the first accumulated released energy is greater than or equal to the first released energy threshold.

Optionally, in a case that the actual discharge power is greater than the first continuous power, the apparatus 500 further includes:

a third determination module, configured to determine a second accumulated released energy of the power battery between a time when a discharging power of the power battery first reaches the first continuous power and a current time and a second released energy threshold based on the peak power, where the second accumulated released energy is greater than or equal to zero, the second accumulated released energy is increased when the discharging power of the power battery is greater than the first continuous power, and the second accumulated released energy is decreased when the discharging power of the power battery is less than the first continuous power;

the adjusting module 503 is configured to perform a decreasing adjustment on the peak power and the first sustained power according to the first accumulated released energy, the second accumulated released energy, the first released energy threshold, and the second released energy threshold.

Optionally, the adjusting module 503 includes:

a first adjustment submodule for adjusting the peak power to the first sustained power if the first accumulated released energy is less than the first released energy threshold and the second accumulated released energy is greater than or equal to the second released energy threshold;

a first determination submodule for re-determining a first accumulated released energy of the power battery between the moment when the discharge power first reaches the second continuous power and the current moment and a first released energy threshold value based on the first continuous power;

a first determining submodule for determining whether the redetermined first accumulated released energy is greater than or equal to the redetermined first released energy threshold;

the triggering submodule is used for triggering the first determining submodule to redetermine a first accumulated released energy of the power battery between the moment when the discharging power reaches the second continuous power for the first time and the current moment and a first released energy threshold value based on the first continuous power if the redetermined first accumulated released energy is smaller than the redetermined first released energy threshold value;

and the second adjusting submodule is used for adjusting the first continuous power and the peak power obtained after adjustment to the second continuous power if the redetermined first accumulated released energy is greater than or equal to the redetermined first released energy threshold.

Optionally, the adjusting module 503 further includes:

a third adjusting submodule configured to adjust both the peak power and the first sustained power to the second sustained power if the first accumulated released energy is greater than or equal to the first released energy threshold.

Optionally, the second determining module 502 is configured to determine a first released energy threshold based on the first sustained power by equation (2) above;

the adjustment module 503 or the third adjustment submodule includes:

a second determining submodule, configured to determine that N times a difference between the constrained usage duration of the first persistent power and the first preset duration is a first adjustment duration, where N is greater than 0 and less than or equal to 2;

a third determining submodule, configured to determine a quotient of a first difference and the first adjustment duration as a first adjustment rate, and determine a quotient of a second difference and the first adjustment duration as a second adjustment rate, where the first difference is a difference between the first continuous power and the second continuous power, and the second difference is a difference between the peak power and the second continuous power;

and the fourth adjusting submodule is used for gradually adjusting the first continuous power to the second continuous power according to the first adjusting rate and gradually adjusting the peak power to the second continuous power according to the second adjusting rate.

Optionally, the apparatus 500 further comprises:

the detection module is used for detecting whether the vehicle is in fault in real time;

the acquisition module is used for acquiring a fault regulation rate when the vehicle has a fault if the vehicle fault is detected;

the fourth adjusting submodule is configured to gradually adjust the first continuous power to the second continuous power according to a maximum value of the first adjusting rate and the fault adjusting rate, and gradually adjust the peak power to the second continuous power according to a maximum value of the second adjusting rate and the fault adjusting rate.

Optionally, the second determining module 502 is configured to determine a second released energy threshold based on the peak power by equation (4) above;

the first regulation submodule includes:

a fourth determining submodule, configured to determine M times a difference between the constrained usage duration of the peak power and the second preset duration as a second adjustment duration, where M is greater than 0 and less than or equal to 2;

a fifth determining submodule, configured to determine a quotient of a third difference and the second adjustment duration as a third adjustment rate, where the third difference is a difference between the peak power and the first continuous power;

a fifth adjustment submodule configured to gradually adjust the peak power to the first sustained power according to the third adjustment rate.

Optionally, the second adjustment submodule includes:

a second determining submodule, configured to determine whether the peak power is adjusted to the first continuous power;

a sixth determining submodule, configured to determine, if the peak power is not adjusted to the first continuous power, a quotient of a fourth difference and a remaining adjustment duration of the peak power as a fourth adjustment rate, where the fourth difference is a difference between a currently adjusted peak power and the second continuous power, and the remaining adjustment duration is a difference between the second adjustment duration and a duration that has been taken to adjust the peak power;

and the sixth adjusting submodule is used for gradually adjusting the peak power obtained after the current adjustment to the second continuous power according to the fourth adjusting rate.

Optionally, the second adjustment submodule includes:

a third determining submodule, configured to determine whether the peak power has been adjusted to the first continuous power;

a seventh determining submodule, configured to determine, if the peak power is not adjusted to the first sustained power, a quotient of a fourth difference and a first adjustment duration as a fifth adjustment rate, where the fourth difference is a difference between the currently adjusted peak power and the second sustained power, the first adjustment duration is N times a difference between a constrained usage duration of the first sustained power and a first preset duration, N is greater than 0 and less than or equal to 2, the first release energy threshold is a maximum release energy calculated by the power battery based on the first sustained power within a first preset duration before the current time, and the first preset duration is smaller than the constrained usage duration of the first sustained power;

and the seventh adjusting submodule is used for gradually adjusting the peak power obtained after the current adjustment to the second continuous power according to the fifth adjusting rate.

Optionally, the third determining module is configured to determine a first accumulated released energy of the power battery between a time when the discharge power first reaches the second continuous power and a current time by the above equation (1);

the apparatus 500 further comprises:

a fourth determination module, configured to re-determine a first accumulated released energy of the power battery between a time when the discharge power first reaches the second continuous power and a current time after the adjustment module 503 performs the reduction adjustment on the peak power and the first continuous power;

a first determining module for determining whether the redetermined first accumulated released energy is equal to zero;

the first triggering module is used for triggering the fourth determining module to redetermine the first accumulated released energy between the moment when the discharge power of the power battery firstly reaches the second continuous power and the current moment if the redetermined first accumulated released energy is not equal to zero;

and the first recovery module is used for recovering the adjusted first continuous power into the first continuous power determined in real time if the redetermined first accumulated released energy is equal to zero.

Optionally, the third determining module is configured to determine a second accumulated released energy of the power battery between a time when the discharge power first reaches the first continuous power and a current time by equation (3) above;

the apparatus 500 further comprises:

a fifth determining module, configured to re-determine a second accumulated released energy of the power battery between the time when the discharging power first reaches the first sustained power and the current time after the adjusting module 503 performs the reduction adjustment on the peak power and the first sustained power;

a second determining module for determining whether the redetermined second accumulated released energy is equal to zero;

the second triggering module is used for triggering the fifth determining module to re-determine the second accumulated released energy of the power battery between the moment when the discharging power reaches the first continuous power for the first time and the current moment if the re-determined second accumulated released energy is not equal to zero;

and the second recovery module is used for recovering the adjusted peak power to the peak power determined in real time if the redetermined second accumulated released energy is equal to zero.

With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.

In order to implement the above embodiment, the present disclosure further provides a controller, including:

a memory having computer readable code stored therein; and

one or more processors that, when executed by the computer program, implement the aforementioned method of available power regulation for a power cell.

In order to achieve the above embodiments, the present disclosure also proposes a computer program comprising computer readable code which, when run on a controller, causes the controller to execute the aforementioned power cell available power adjustment method.

In order to implement the above embodiments, the present disclosure also proposes a computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the foregoing available power regulation method for a power battery.

Fig. 6 is a schematic structural diagram of a controller according to an embodiment of the present disclosure. The controller generally includes a processor 1110 and a computer program product or computer readable medium in the form of a memory 1130. The memory 1130 may be an electronic memory such as a flash memory, an EEPROM (electrically erasable programmable read only memory), an EPROM, a hard disk, or a ROM. The memory 1130 has storage space 1150 for program code 1151 for performing any of the method steps described above. For example, the storage space 1150 for the program code may include respective program codes 1151 for respectively implementing various steps in the above method. The program code can be read from or written to one or more computer program products. These computer program products comprise a program code carrier such as a hard disk, a Compact Disc (CD), a memory card or a floppy disk. Such a computer program product is typically a portable or fixed storage unit as shown in fig. 7. The storage unit may have storage segments, storage spaces, etc. arranged similarly to the memory 1130 in the server of fig. 6. The program code may be compressed, for example, in a suitable form. Typically, the storage unit comprises computer readable code 1151', i.e. code that can be read by a processor, such as 1110, for example, which when executed by a server causes the server to perform the steps of the method described above.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that the various features described in the foregoing embodiments may be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the disclosure does not separately describe various possible combinations.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. A method for adjusting available power of a power battery is characterized by comprising the following steps:

determining actual discharge power and available power of the power battery in real time, wherein the available power comprises peak power, first continuous power and second continuous power, and the constrained usage duration of the first continuous power is smaller than that of the second continuous power;

2. The method of claim 1, wherein the step-down adjusting the peak power and the first sustained power based on at least the first accumulated released energy and the first released energy threshold in the case that the actual discharge power is greater than the second sustained power and less than the first sustained power comprises:

3. The method of claim 1, wherein in the case that the actual discharge power is greater than the first sustaining power, the method further comprises:

said reducing adjustments to said peak power and said first sustained power based at least on said first accumulated released energy and said first released energy threshold comprises:

the peak power and the first sustained power are down-regulated in accordance with the first cumulative released energy, the second cumulative released energy, the first released energy threshold, and the second released energy threshold.

4. The method of claim 3, wherein the de-modulating the peak power and the first sustained power as a function of the first accumulated released energy, the second accumulated released energy, the first released energy threshold, and the second released energy threshold comprises:

adjusting the peak power to the first sustained power if the first cumulative released energy is less than the first released energy threshold and the second cumulative released energy is greater than or equal to the second released energy threshold;

5. The method of claim 4, wherein the de-modulating the peak power and the first sustained power as a function of the first accumulated released energy, the second accumulated released energy, the first released energy threshold, and the second released energy threshold, further comprises:

6. The method of claim 2 or 5, wherein the determining is based on a first released energy threshold for the first sustained power, comprising:

wherein E is_{1 threshold value}Is the first released energy threshold; t1 is the current time; t0 is the time shifted forward from the current time t1 by a first preset duration, where the first preset duration is less than the constrained usage duration of the first sustained power; p₁Is the first continuous power; p is₂The second continuous power;

7. The method of claim 6, further comprising:

detecting whether the vehicle is in fault in real time;

gradually adjusting the first continuous power to the second continuous power at a maximum of the first adjustment rate and the fault adjustment rate, and gradually adjusting the peak power to the second continuous power at a maximum of the second adjustment rate and the fault adjustment rate.

8. The method of claim 4, wherein the determining is based on a second released energy threshold for the peak power, comprising:

wherein E is_{2 threshold value}Is the firstA second release energy threshold; t1 is the current time; t2 is the time shifted forward from the current time t1 by a second preset time, the second preset time being less than the constrained use time of the peak power; p₀Is the peak power; p₁Is the first continuous power;

the adjusting the peak power to the first continuous power comprises:

determining M times of the difference between the constraint use duration of the peak power and the second preset duration as a second adjustment duration, wherein M is more than 0 and less than or equal to 2;

determining a quotient of a third difference value and the second adjustment duration as a third adjustment rate, wherein the third difference value is a difference between the peak power and the first continuous power;

gradually adjusting the peak power to the first sustained power at the third adjustment rate.

9. The method of claim 8, wherein the adjusting the adjusted peak power to the second continuous power comprises:

judging whether the peak power is adjusted to the first continuous power;

if the peak power is not adjusted to the first continuous power, determining a quotient of a fourth difference value and a remaining adjustment duration of the peak power as a fourth adjustment rate, wherein the fourth difference value is a difference between the peak power obtained after current adjustment and the second continuous power, and the remaining adjustment duration is a difference between the second adjustment duration and a duration spent on adjusting the peak power;

10. The method of claim 8, wherein the adjusting the adjusted peak power to the second continuous power comprises:

if the peak power is not adjusted to the first continuous power, determining a quotient of a fourth difference value and a first adjustment duration as a fifth adjustment rate, wherein the fourth difference value is a difference between the peak power obtained after current adjustment and the second continuous power, the first adjustment duration is N times a difference between a constraint use duration of the first continuous power and a first preset duration, N is greater than 0 and less than or equal to 2, the first release energy threshold is maximum release energy calculated by the power battery within a first preset duration before the current time based on the first continuous power, and the first preset duration is smaller than the constraint use duration of the first continuous power;

11. The method according to any one of claims 1-5, wherein said determining a first accumulated released energy of the power cell between a time when the discharge power first reaches the second sustained power and a current time comprises:

wherein E is_{1 accumulation of}Releasing energy for the first accumulation; t1 is the current time; t3 is the moment when the discharge power of the power battery reaches the second continuous power for the first time; p₂The second continuous power; u is the actual voltage of the power battery; i is the actual current of the power battery;

12. The method according to any one of claims 3-5, wherein said determining a second accumulated released energy of the power cell between a time when the discharge power first reached the first sustained power and a present time comprises:

if the second newly determined accumulated released energy is not equal to zero, returning to the step of newly determining the second accumulated released energy of the power battery between the moment when the discharge power reaches the first continuous power for the first time and the current moment;

13. An available power regulating device for a power battery, comprising:

the first determination module is used for determining actual discharge power and available power of the power battery in real time, wherein the available power comprises peak power, first continuous power and second continuous power, and the constrained usage duration of the first continuous power is smaller than that of the second continuous power;

a second determining module, configured to determine, if the actual discharging power determined by the first determining module is greater than the second continuous power, a first accumulated released energy of the power battery between a time when the discharging power first reaches the second continuous power and a current time, and a first released energy threshold based on the first continuous power, where the first accumulated released energy is greater than or equal to zero, the first accumulated released energy increases when the discharging power of the power battery is greater than the second continuous power, and the first accumulated released energy decreases when the discharging power of the power battery is less than the second continuous power;

and the adjusting module is used for performing reduction adjustment on the peak power and the first continuous power at least according to the first accumulated release energy and the first release energy threshold determined by the second determining module, so that the vehicle controls the discharge power of the power battery according to the adjusted peak power and the adjusted first continuous power.

14. A controller, comprising:

a memory having a computer program stored therein; and

one or more processors which, when executed by said computer program, implement the method of available power regulation of a power cell according to any one of claims 1 to 12.

15. A computer-readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, carries out a method for regulating the available power of a power cell according to any one of claims 1-12.