Battery available energy estimation method, device, storage medium and vehicle

Abstract

The present disclosure relates to a method, device, storage medium and vehicle for estimating available energy of a battery. The method comprises: obtaining a first battery status parameter of a battery at an initial moment of a unit measurement period, and a second battery status parameter of the battery at an end moment of the unit measurement period, wherein the first battery status parameter comprises a first battery state of charge, and the second battery status parameter comprises a second battery state of charge; calculating a unit invalid energy consumption of the battery according to the first battery status parameter, the second battery status parameter, and a bus voltage and a bus current of the battery in the unit measurement period, wherein the unit invalid energy consumption is the invalid energy consumption corresponding to each unit battery state of charge; and calculating the total available energy of the battery at the end moment according to the unit invalid energy consumption and the total remaining energy of the battery at the end moment.

Description

Technical Field

[0001] The present disclosure relates to the field of battery technology, and in particular, to a method, device, storage medium and vehicle for estimating available battery energy. Background Art

[0002] Currently, most methods for evaluating the remaining working capacity of a battery are to calculate the total remaining energy of the battery. The total remaining energy of the battery is mostly calculated by the battery state of charge (SOC) and the battery capacity. This calculation method only takes into account the change of the battery charging and discharging current over time. In actual applications, the battery is affected by factors such as battery capacity, voltage and future working conditions, which usually results in ineffective energy consumption. As a result, the total available energy remaining in the battery is often less than the total remaining energy, resulting in the problem that the total remaining energy of the battery cannot accurately reflect the remaining working capacity of the battery. Summary of the invention

[0003] The purpose of the present disclosure is to provide a method, device, storage medium and vehicle for estimating available battery energy, so as to solve the technical problem that the calculation of the remaining total energy of the battery in the related art cannot accurately reflect the remaining working capacity of the battery.

[0004] In order to achieve the above object, the present disclosure provides a method for estimating available energy of a battery in a first aspect, the method comprising:

[0005] Acquire a first battery status parameter of a battery at an initial time of a unit measurement period, and a second battery status parameter of the battery at an end time of the unit measurement period, wherein the first battery status parameter includes a first battery state of charge, and the second battery status parameter includes a second battery state of charge;

[0006] Calculate the unit invalid energy consumption of the battery according to the first battery state parameter, the second battery state parameter, and the bus voltage and bus current of the battery in the unit measurement period, wherein the unit invalid energy consumption is the invalid energy consumption corresponding to each unit battery state of charge;

[0007] The total available energy of the battery at the end time is calculated according to the unit ineffective consumption energy and the total remaining energy of the battery at the end time.

[0008] Optionally, the calculating the unit invalid energy consumption of the battery according to the first battery state parameter, the second battery state parameter, and the bus voltage and bus current of the battery in the unit measurement period includes:

[0009] Calculate the invalid consumption energy of the battery in the unit measurement period according to the first battery state parameter, the second battery state parameter, and the bus voltage and bus current of the battery in the unit measurement period;

[0010] The unit invalid consumption energy is calculated according to the invalid consumption energy, the first battery state of charge and the second battery state of charge.

[0011] Optionally, the calculating the invalid consumption energy of the battery in the unit measurement period according to the first battery state parameter, the second battery state parameter, and the bus voltage and bus current of the battery in the unit measurement period includes:

[0012] Calculate the total remaining energy of the battery at the initial time according to the first battery status parameter, and calculate the total remaining energy of the battery at the end time according to the second battery status parameter;

[0013] Calculating the effective energy consumption of the battery in the unit measurement period according to the bus voltage and the bus current;

[0014] The difference between the total remaining energy of the battery at the initial moment and the total remaining energy of the battery at the end moment is taken as the actual total energy consumption of the battery in the unit measurement period, and the difference between the actual total energy consumption and the effective energy consumption is calculated to obtain the invalid energy consumption of the battery in the unit measurement period.

[0015] Optionally, the first battery status parameter further includes a battery health state, a battery temperature, and a battery capacity, and calculating the total remaining energy of the battery at the initial moment according to the first battery status parameter includes:

[0016] The first battery state of charge, the battery health state, the battery temperature, and the battery capacity are input into a battery remaining energy model corresponding to the battery, and the total remaining energy of the battery at the initial moment output by the battery remaining energy model is obtained.

[0017] Optionally, the calculating the total available energy of the battery at the end time according to the unit ineffective consumption energy and the total remaining energy of the battery at the end time includes:

[0018] Determine an energy consumption correction coefficient according to the bus average current, bus peak current and the second battery state of charge of the battery in the unit measurement period, wherein the energy consumption correction coefficient is negatively correlated with the bus average current, and the energy consumption correction coefficient is negatively correlated with the second battery state of charge;

[0019] The product of the energy consumption correction coefficient and the unit invalid energy consumption is used as the total invalid energy consumption that the battery will generate in the subsequent working process, and the difference between the total remaining energy of the battery at the end time and the total invalid energy consumption is used as the total available energy.

[0020] Optionally, determining the energy consumption correction coefficient according to the bus average current, bus peak current and the second battery state of charge of the battery in the unit measurement period includes:

[0021] The energy consumption correction factor k is calculated by the following formula:

[0022] k=a*(1-SOC t )+b*(I max -I average );

[0023] Among them, a and b are pre-calibrated constants, SOC t is the second battery state of charge, I max is the bus peak current, I average is the average current of the bus.

[0024] A second aspect of the present disclosure provides a battery available energy estimation device, comprising:

[0025] an acquisition module, configured to acquire a first battery state parameter of a battery at an initial time of a unit measurement period, and a second battery state parameter of the battery at an end time of the unit measurement period, wherein the first battery state parameter includes a first battery state of charge, and the second battery state parameter includes a second battery state of charge;

[0026] A first calculation module, configured to calculate a unit invalid energy consumption of the battery according to the first battery state parameter, the second battery state parameter, and a bus voltage and a bus current of the battery in the unit measurement period, wherein the unit invalid energy consumption is the invalid energy consumption corresponding to each unit battery state of charge;

[0027] The second calculation module is used to calculate the total available energy of the battery at the end time according to the unit ineffective consumption energy and the total remaining energy of the battery at the end time to obtain the total available energy of the battery at the end time.

[0028] Optionally, the first calculation module includes:

[0029] A first calculation submodule, configured to calculate the invalid consumption energy of the battery in the unit measurement period according to the first battery state parameter, the second battery state parameter, and the bus voltage and bus current of the battery in the unit measurement period;

[0030] The second calculation submodule is used to calculate the unit invalid energy consumption according to the invalid energy consumption, the first battery state of charge and the second battery state of charge.

[0031] A third aspect of the present disclosure provides a non-temporary computer-readable storage medium having a computer program stored thereon, which implements the steps of the above method when executed by a processor.

[0032] A fourth aspect of the present disclosure provides a vehicle, comprising the above-mentioned battery available energy estimation device.

[0033] By adopting the above method, the total remaining available energy of the battery is calculated by comprehensively considering the total remaining energy of the battery and the unit invalid energy consumption. The total available energy of the battery can more intuitively show the effective energy used by the battery for work during future use, thereby more accurately reflecting the remaining working capacity of the battery.

[0034] In the application scenario where the battery is used as a power battery for electric vehicles, the above-mentioned battery available energy estimation method can obtain the remaining total available energy of the battery. The remaining total available energy of the battery can serve as an important basis for the energy management strategy of the electric vehicle, and can more accurately estimate the remaining mileage of the electric vehicle, so that the driver can reasonably plan the driving process.

[0035] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0037] Figure 1 is a flowchart of a method for estimating available energy of a battery provided by an embodiment of the present disclosure;

[0038] Figure 2 is a flow chart of another method for estimating available energy of a battery provided by an embodiment of the present disclosure;

[0039] Figure 3 It is a structural schematic diagram of a battery available energy estimation device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0040] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0041] At present, most methods for estimating the total remaining energy of a battery are calculated through the battery state of charge (SOC) and battery capacity. This calculation method only takes into account the change of the battery charging and discharging current over time, but does not take into account the impact of the battery's invalid energy consumption. The invalid energy consumption of the battery mainly refers to the Joule heat and reaction heat generated by the battery's internal resistance during operation.

[0042] In view of this, an embodiment of the present disclosure provides a method for estimating available energy of a battery. The execution subject of the method may be, for example, a vehicle control unit on a vehicle. Figure 1 As shown, the method includes:

[0043] S101, acquiring a first battery status parameter of a battery at an initial time of a unit measurement period, and a second battery status parameter of the battery at an end time of the unit measurement period, wherein the first battery status parameter includes a first battery state of charge, and the second battery status parameter includes a second battery state of charge;

[0044] S102, calculating the unit invalid energy consumption of the battery according to the first battery state parameter, the second battery state parameter, and the bus voltage and bus current of the battery in the unit measurement period, wherein the unit invalid energy consumption is the invalid energy consumption corresponding to each unit battery state of charge;

[0045] S103: Calculate the total available energy of the battery at the end time according to the unit ineffective consumption energy and the total remaining energy of the battery at the end time.

[0046] By adopting the above method, the total remaining available energy of the battery is calculated by comprehensively considering the total remaining energy of the battery and the unit invalid energy consumption. The total available energy of the battery can more intuitively show the effective energy used by the battery for work during future use, thereby more accurately reflecting the remaining working capacity of the battery.

[0047] In the application scenario where the battery is used as a power battery for electric vehicles, the above-mentioned battery available energy estimation method can obtain the remaining total available energy of the battery. The remaining total available energy of the battery can serve as an important basis for the energy management strategy of the electric vehicle, and can more accurately estimate the remaining mileage of the electric vehicle, so that the driver can reasonably plan the driving process.

[0048] Optionally, the calculating the unit invalid energy consumption of the battery according to the first battery state parameter, the second battery state parameter, and the bus voltage and bus current of the battery in the unit measurement period includes:

[0049] Calculate the invalid consumption energy of the battery in the unit measurement period according to the first battery state parameter, the second battery state parameter, and the bus voltage and bus current of the battery in the unit measurement period;

[0050] The unit invalid consumption energy is calculated according to the invalid consumption energy, the first battery state of charge and the second battery state of charge.

[0051] That is, the unit invalid energy consumption is obtained by dividing the invalid energy consumption by the difference between the first battery state of charge and the second battery state of charge.

[0052] It is worth noting that since the invalid energy consumption can only reflect the invalid energy consumption of the battery in the unit measurement period, and the length of time the battery will be used under future working conditions is affected by the working conditions, it is impossible to estimate the total invalid energy consumption that the battery will generate in the subsequent working process. The unit invalid energy consumption is calculated by the invalid energy consumption, the first battery state of charge, and the second battery state of charge. The unit invalid energy consumption reflects the invalid energy consumption corresponding to each unit battery state of charge, which is convenient for estimating the total invalid energy consumption that the battery will generate in the subsequent working process, and obtaining a more accurate total available energy of the battery.

[0053] Optionally, the calculating the invalid consumption energy of the battery in the unit measurement period according to the first battery state parameter, the second battery state parameter, and the bus voltage and bus current of the battery in the unit measurement period includes:

[0054] Calculate the total remaining energy of the battery at the initial time according to the first battery status parameter, and calculate the total remaining energy of the battery at the end time according to the second battery status parameter;

[0055] Calculating the effective energy consumption of the battery in the unit measurement period according to the bus voltage and the bus current;

[0056] The difference between the total remaining energy of the battery at the initial moment and the total remaining energy of the battery at the end moment is taken as the actual total energy consumption of the battery in the unit measurement period, and the difference between the actual total energy consumption and the effective energy consumption is calculated to obtain the invalid energy consumption of the battery in the unit measurement period.

[0057] Optionally, the first battery status parameter further includes a battery health state, a battery temperature, and a battery capacity, and calculating the total remaining energy of the battery at the initial moment according to the first battery status parameter includes:

[0058] The first battery state of charge, the battery health state, the battery temperature, and the battery capacity are input into a battery remaining energy model corresponding to the battery, and the total remaining energy of the battery at the initial moment output by the battery remaining energy model is obtained.

[0059] Among them, the battery remaining energy model can reflect the corresponding relationship between the open circuit voltage of the battery and the battery state of charge, and can be used to estimate the total remaining energy of the battery. There are many methods for establishing a battery remaining energy model in the prior art, such as the open circuit voltage method, the Kalman filter algorithm, and the neural network algorithm. The present disclosure does not limit the specific method for establishing the battery remaining energy model.

[0060] Optionally, the calculating the total available energy of the battery at the end time according to the unit ineffective consumption energy and the total remaining energy of the battery at the end time includes:

[0061] Determine an energy consumption correction coefficient according to the bus average current, bus peak current and the second battery state of charge of the battery in the unit measurement period, wherein the energy consumption correction coefficient is negatively correlated with the bus average current, and the energy consumption correction coefficient is negatively correlated with the second battery state of charge;

[0062] The product of the energy consumption correction coefficient and the unit invalid energy consumption is used as the total invalid energy consumption that the battery will generate in the subsequent working process, and the difference between the total remaining energy of the battery at the end time and the total invalid energy consumption is used as the total available energy.

[0063] The energy consumption correction coefficient comprehensively considers the bus average current, bus peak current and the second battery state of charge of the battery in the unit measurement period, and the product of the energy consumption correction coefficient and the unit invalid energy consumption is used to obtain the total invalid energy consumption that the battery will generate in the subsequent working process. Since the energy consumption correction coefficient is negatively correlated with the bus average current, the energy consumption correction coefficient is negatively correlated with the second battery state of charge, that is, taking into account the dynamic changes of the battery current and the dynamic changes of the battery state of charge in the estimation process of the total available energy, it can be ensured that the above-mentioned battery available energy estimation method can obtain relatively accurate results when iterated under different current sizes and battery states of charge.

[0064] Optionally, determining the energy consumption correction coefficient according to the bus average current, bus peak current and the second battery state of charge of the battery in the unit measurement period includes:

[0065] The energy consumption correction factor k is calculated by the following formula:

[0066] k=a*(1-SOC t )+b*(I max -I average );

[0067] Among them, a and b are pre-calibrated constants, SOC t is the second battery state of charge, I max is the bus peak current, I average is the average current of the bus.

[0068] The energy consumption correction coefficient k is determined by the above formula, and the average bus current I average The larger the value is, the smaller the energy consumption correction coefficient k is, so that the above-mentioned method for estimating available battery energy can obtain relatively accurate results in iterations within a range with a large bus current. The higher the battery state of charge is, the smaller the energy consumption correction coefficient k is, so that the above-mentioned method for estimating available battery energy can obtain relatively accurate results in multiple iterations within a range with a low battery state of charge.

[0069] The above method embodiment can be executed by the vehicle controller on the vehicle during actual use, and the above method embodiment only shows a method for estimating the total available energy of the battery for a unit measurement period. In specific implementation, the vehicle controller can continuously iterate and execute the battery available energy estimation method provided by the above method embodiment according to a preset cycle from the time the battery is put into use. Among them, the duration of the cycle (that is, the duration of the unit measurement period) can be set according to actual needs, and the present disclosure does not limit it. In addition, after the vehicle controller calculates the total available energy of the vehicle's power battery, it can also display the total available energy of the power battery through the on-board display for the driver to view.

[0070] In order to enable those skilled in the art to better understand the technical solution provided by the embodiment of the present disclosure, the battery available energy estimation method provided by the embodiment of the present disclosure is described in detail below.

[0071] Figure 2 Another method for estimating available battery energy provided by an embodiment of the present disclosure includes:

[0072] S201. Acquire a first battery status parameter of a battery at an initial moment of a unit measurement period, and a second battery status parameter of the battery at an end moment of the unit measurement period, wherein the first battery status parameter includes a first battery state of charge, a battery state of health, a battery temperature, and a battery capacity, and the second battery status parameter includes a second battery state of charge, a battery state of health, a battery temperature, and a battery capacity.

[0073] S202. Input the first battery state of charge, the battery health state, the battery temperature, and the battery capacity into a battery remaining energy model corresponding to the battery, and obtain the total remaining energy of the battery at the initial moment output by the battery remaining energy model; input the second battery state of charge, the battery health state, the battery temperature, and the battery capacity into a battery remaining energy model corresponding to the battery, and obtain the total remaining energy of the battery at the end moment output by the battery remaining energy model.

[0074] S203: Calculate the effective energy consumption of the battery in the unit measurement period according to the bus voltage and the bus current.

[0075] S204, taking the difference between the total remaining energy of the battery at the initial moment and the total remaining energy of the battery at the end moment as the actual total energy consumption of the battery in the unit measurement period, calculating the difference between the actual total energy consumption and the effective energy consumption, and obtaining the invalid energy consumption of the battery in the unit measurement period.

[0076] S205, calculating the unit invalid energy consumption according to the invalid energy consumption, the first battery state of charge, and the second battery state of charge, wherein the unit invalid energy consumption is the invalid energy consumption corresponding to each unit battery state of charge.

[0077] S206, calculating the energy consumption correction coefficient k by the following formula:

[0078] k=a*(1-SOC t )+b*(I max -I average );

[0079] Among them, a and b are pre-calibrated constants, SOC t is the second battery state of charge, I max is the bus peak current, I average is the average current of the bus.

[0080] S207, taking the product of the energy consumption correction coefficient and the unit invalid energy consumption as the total invalid energy consumption that the battery will generate in the subsequent working process, and taking the difference between the total remaining energy of the battery at the end time and the total invalid energy consumption as the total available energy.

[0081] By adopting the above method, the total remaining available energy of the battery is calculated by comprehensively considering the total remaining energy of the battery and the unit invalid energy consumption. The total available energy of the battery can more intuitively show the effective energy used by the battery for work during future use, thereby more accurately reflecting the remaining working capacity of the battery.

[0082] In the application scenario where the battery is used as a power battery for electric vehicles, the above-mentioned battery available energy estimation method can obtain the remaining total available energy of the battery. The remaining total available energy of the battery can serve as an important basis for the energy management strategy of the electric vehicle, and can more accurately estimate the remaining mileage of the electric vehicle, so that the driver can reasonably plan the driving process.

[0083] In addition, for the above Figure 2 The method embodiments shown are described as a series of action combinations for the sake of simplicity, but those skilled in the art should be aware that the present disclosure is not limited by the order of the actions described. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present disclosure.

[0084] The embodiment of the present disclosure also provides a battery available energy estimation device, which is used to implement the method steps provided in the above method embodiment, and the device can be used as a part of the vehicle in the form of software, hardware or a combination of both, such as Figure 3 As shown, the battery available energy estimation device 300 includes:

[0085] An acquisition module 301 is used to acquire a first battery state parameter of a battery at an initial time of a unit measurement period and a second battery state parameter of the battery at an end time of the unit measurement period, wherein the first battery state parameter includes a first battery state of charge, and the second battery state parameter includes a second battery state of charge;

[0086] A first calculation module 302 is used to calculate the unit invalid energy consumption of the battery according to the first battery state parameter, the second battery state parameter, and the bus voltage and bus current of the battery in the unit measurement period, wherein the unit invalid energy consumption is the invalid energy consumption corresponding to each unit battery state of charge;

[0087] The second calculation module 303 is used to calculate the total available energy of the battery at the end time according to the unit ineffective consumption energy and the total remaining energy of the battery at the end time to obtain the total available energy of the battery at the end time.

[0088] Optionally, the first calculation module 302 includes:

[0089] A first calculation submodule, configured to calculate the invalid consumption energy of the battery in the unit measurement period according to the first battery state parameter, the second battery state parameter, and the bus voltage and bus current of the battery in the unit measurement period;

[0090] The second calculation submodule is used to calculate the unit invalid energy consumption according to the invalid energy consumption, the first battery state of charge and the second battery state of charge.

[0091] Optionally, the first calculation submodule is further used for:

[0092] Calculate the total remaining energy of the battery at the initial time according to the first battery status parameter, and calculate the total remaining energy of the battery at the end time according to the second battery status parameter;

[0093] Calculating the effective energy consumption of the battery in the unit measurement period according to the bus voltage and the bus current;

[0094] The difference between the total remaining energy of the battery at the initial moment and the total remaining energy of the battery at the end moment is taken as the actual total energy consumption of the battery in the unit measurement period, and the difference between the actual total energy consumption and the effective energy consumption is calculated to obtain the invalid energy consumption of the battery in the unit measurement period.

[0095] Optionally, the first battery status parameter further includes a battery health status, a battery temperature, and a battery capacity, and the first calculation submodule is further used for:

[0096] The first battery state of charge, the battery health state, the battery temperature, and the battery capacity are input into a battery remaining energy model corresponding to the battery, and the total remaining energy of the battery at the initial moment output by the battery remaining energy model is obtained.

[0097] Optionally, the second calculation module 303 is specifically configured to:

[0098] Determine an energy consumption correction coefficient according to the bus average current, bus peak current and the second battery state of charge of the battery in the unit measurement period, wherein the energy consumption correction coefficient is negatively correlated with the bus average current, and the energy consumption correction coefficient is negatively correlated with the second battery state of charge;

[0099] The product of the energy consumption correction coefficient and the unit invalid energy consumption is used as the total invalid energy consumption that the battery will generate in the subsequent working process, and the difference between the total remaining energy of the battery at the end time and the total invalid energy consumption is used as the total available energy.

[0100] Optionally, the second calculation module 303 is specifically configured to:

[0101] The determining of the energy consumption correction coefficient according to the bus average current, bus peak current and the second battery state of charge of the battery in the unit measurement period includes:

[0102] The energy consumption correction factor k is calculated by the following formula:

[0103] k=a*(1-SOC t )+b*(I max -I average );

[0104] Among them, a and b are pre-calibrated constants, SOC t is the second battery state of charge, I max is the bus peak current, I average is the average current of the bus.

[0105] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0106] In an exemplary embodiment, a computer-readable storage medium including program instructions is also provided. When the program instructions are executed by a processor, the steps of the above-mentioned battery available energy estimation method are implemented.

[0107] In another exemplary embodiment, a vehicle is provided, comprising the above-mentioned battery available energy estimating device.

[0108] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0109] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0110] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A method for estimating available battery energy, characterized in that: The method comprises: Acquire a first battery status parameter of a battery at an initial time of a unit measurement period, and a second battery status parameter of the battery at an end time of the unit measurement period, wherein the first battery status parameter includes a first battery state of charge, and the second battery status parameter includes a second battery state of charge; Calculate the unit invalid energy consumption of the battery according to the first battery state parameter, the second battery state parameter, and the bus voltage and bus current of the battery in the unit measurement period, wherein the unit invalid energy consumption is the invalid energy consumption corresponding to each unit battery state of charge; The total available energy of the battery at the end time is calculated according to the unit invalid consumption energy and the total remaining energy of the battery at the end time; The step of calculating the total available energy of the battery at the end time according to the unit ineffective consumption energy and the total remaining energy of the battery at the end time includes: Determine an energy consumption correction coefficient according to the bus average current, bus peak current and the second battery state of charge of the battery in the unit measurement period, wherein the energy consumption correction coefficient is negatively correlated with the bus average current, and the energy consumption correction coefficient is negatively correlated with the second battery state of charge; The product of the energy consumption correction coefficient and the unit invalid energy consumption is used as the total invalid energy consumption that the battery will generate in the subsequent working process, and the difference between the total remaining energy of the battery at the end time and the total invalid energy consumption is used as the total available energy; The step of determining the energy consumption correction coefficient according to the bus average current, bus peak current and the second battery state of charge of the battery in the unit measurement period includes: The energy consumption correction coefficient k is calculated by the following formula: ； Where a and b are pre-calibrated constants. is the second battery state of charge, is the bus peak current, is the average current of the bus.

2. The method according to claim 1, characterized in that The calculating the unit invalid energy consumption of the battery according to the first battery state parameter, the second battery state parameter, and the bus voltage and bus current of the battery in the unit measurement period includes: Calculate the invalid consumption energy of the battery in the unit measurement period according to the first battery state parameter, the second battery state parameter, and the bus voltage and bus current of the battery in the unit measurement period; The unit invalid energy consumption is calculated according to the invalid energy consumption, the first battery state of charge and the second battery state of charge.

3. The method according to claim 2, characterized in that The calculating the invalid consumption energy of the battery in the unit measurement period according to the first battery state parameter, the second battery state parameter, and the bus voltage and bus current of the battery in the unit measurement period includes: Calculate the total remaining energy of the battery at the initial time according to the first battery status parameter, and calculate the total remaining energy of the battery at the end time according to the second battery status parameter; Calculating the effective energy consumption of the battery in the unit measurement period according to the bus voltage and the bus current; The difference between the total remaining energy of the battery at the initial moment and the total remaining energy of the battery at the end moment is taken as the actual total energy consumption of the battery in the unit measurement period, and the difference between the actual total energy consumption and the effective energy consumption is calculated to obtain the invalid energy consumption of the battery in the unit measurement period.

4. The method according to claim 3, characterized in that The first battery status parameter further includes a battery health state, a battery temperature, and a battery capacity. The calculating the total remaining energy of the battery at the initial moment according to the first battery status parameter includes: The first battery state of charge, the battery health state, the battery temperature, and the battery capacity are input into a battery remaining energy model corresponding to the battery, and the total remaining energy of the battery at the initial moment output by the battery remaining energy model is obtained.

5. A battery available energy estimation device, characterized in that: include: an acquisition module, configured to acquire a first battery state parameter of a battery at an initial time of a unit measurement period, and a second battery state parameter of the battery at an end time of the unit measurement period, wherein the first battery state parameter includes a first battery state of charge, and the second battery state parameter includes a second battery state of charge; A first calculation module, configured to calculate a unit invalid energy consumption of the battery according to the first battery state parameter, the second battery state parameter, and a bus voltage and a bus current of the battery in the unit measurement period, wherein the unit invalid energy consumption is the invalid energy consumption corresponding to each unit battery state of charge; A second calculation module, configured to calculate the total available energy of the battery at the end time according to the unit ineffective consumption energy and the total remaining energy of the battery at the end time; Wherein, the second calculation module is used for: Determine an energy consumption correction coefficient according to the bus average current, bus peak current and the second battery state of charge of the battery in the unit measurement period, wherein the energy consumption correction coefficient is negatively correlated with the bus average current, and the energy consumption correction coefficient is negatively correlated with the second battery state of charge; The product of the energy consumption correction coefficient and the unit invalid energy consumption is used as the total invalid energy consumption that the battery will generate in the subsequent working process, and the difference between the total remaining energy of the battery at the end time and the total invalid energy consumption is used as the total available energy; Wherein, the second calculation module is used for: The determining of the energy consumption correction coefficient according to the bus average current, bus peak current and the second battery state of charge of the battery in the unit measurement period includes: The energy consumption correction coefficient k is calculated by the following formula: ； Where a and b are pre-calibrated constants. is the second battery state of charge, is the bus peak current, is the average current of the bus.

6. The device according to claim 5, characterized in that The first calculation module includes: A first calculation submodule, configured to calculate the invalid consumption energy of the battery in the unit measurement period according to the first battery state parameter, the second battery state parameter, and the bus voltage and bus current of the battery in the unit measurement period; The second calculation submodule is used to calculate the unit invalid energy consumption according to the invalid energy consumption, the first battery state of charge and the second battery state of charge.

7. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method described in any one of claims 1 to 4 are implemented.

8. A vehicle, characterized in that: The invention comprises the battery available energy estimating device as claimed in claim 5 or 6.

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