CN102928786B - Accumulator capacity evaluation method and system - Google Patents

Abstract

This application discloses a kind of accumulator capacity evaluation method and system, the method comprises the following steps: detect conductance during battery-operated; Obtain conductance radix, scale-up factor and the conductance reference value corresponding with described accumulator respectively; The calculated capacity of described accumulator is calculated according to described conductance, conductance radix, scale-up factor and conductance reference value; The calculated capacity of described accumulator and null value are compared; The capacity of described accumulator is obtained according to comparative result.Compared with prior art, the method is when testing the capacity of accumulator, do not need to carry out 100% property checked electric discharge to accumulator, only need detect accumulator conductance, just can estimate the capacity of accumulator, institute is in this way when testing, and the working time is short, efficiency is high, can judge the capacity of accumulator fast.

Description

Battery capacity estimation method and system

technical field

The present application relates to the technical field of storage batteries, in particular to a method and system for estimating storage battery capacity.

Background technique

Glossary:

Battery Conductance: Conductance is the ability to transmit current, which reflects the physical characteristics of the plate area where the battery cell can undergo chemical reactions.

Check discharge: In order to check the actual capacity of the battery pack in normal operation, the battery pack is taken out of operation, and the constant current discharge is carried out with the specified discharge current. As long as one of the single batteries is placed at the specified termination voltage, the discharge should be stopped .

Termination voltage: In the calculation of battery capacity selection, the termination voltage refers to the power load of the DC system, and the minimum discharge voltage that the battery is required to maintain within the specified discharge time. For the battery itself, the termination voltage refers to the minimum discharge voltage allowed by the battery under different discharge time and different discharge rate discharge conditions. In general, the requirements of the former are higher than those of the latter.

The battery is an important part of the DC power supply system in the power supply system. As a DC power supply, it is mainly responsible for providing safe, stable and reliable power protection for the secondary system load in the power system, ensuring the normal operation of relay protection and communication equipment. run. Therefore, the stability of the battery and the actual capacity that can be provided to the load during the discharge process are of great significance to ensure the safe operation of the power equipment.

However, after a certain period of use of the battery, it is often easy to cause the capacity to gradually decrease until failure due to factors such as active material falling off, grid corrosion, plate deformation, and vulcanization. Once one of the batteries is damaged prematurely, if it is not discovered in time, other batteries will be damaged over time. Therefore, it is necessary to find out the batteries that fail or whose capacity does not meet the requirements in the power system in time, and deal with them in order to eliminate hidden dangers.

Due to the cumbersome maintenance methods of lead-acid batteries, they have been replaced by valve-regulated sealed lead-acid batteries with the characteristics of no need to add water, flexible installation, small footprint and no acid mist formation.

At present, in the power system, when determining the capacity of the valve-regulated battery, a 100% checking discharge test must be carried out on the valve-regulated battery. Obviously, the 100% checking discharge of the battery takes a long time, about 10 hours. In the power system, this can be achieved for 220KV and 500KV substations, because there are two sets of battery packs in this type of substation, one set of battery packs can keep working, and the other set can be used for testing, while for 110KV substations It is difficult to realize, because this type of substation has only one set of battery packs, so for 110KV substation, only 50% checking discharge test can be carried out on the battery, but the overall condition of the battery cannot be tested, and the overall condition of the battery cannot be known. capacity.

In addition, the time required for the traditional battery checking charging and discharging work is estimated as follows: 110KV substation (with a set of batteries) needs at least 13 hours for charging and discharging, specifically: 5 hours for discharging, 8 hours for charging Hours; 220KV and 500KV substations (with two sets of battery packs) need at least 24 hours to charge and discharge each set of batteries, specifically: at least 9 hours for discharging and 15 hours for charging. Two sets of batteries just need at least 48 hours. This is still the time it takes to do one loop. This consumes a lot of staff time. For the 110KV substation with only one group of storage batteries, it is impossible to know the total capacity of the storage batteries (because only 50% of the storage battery capacity can be placed).

Through research on the prior art, the inventors have found that the existing conventional battery check charging and discharging work has the following disadvantages: (1) the working hours are long; (2) the capacity of the battery cannot be quickly judged. It is especially important; (3) in the acceptance check, the status of the battery cannot be judged in real time; (4) when a faulty battery is judged for a major fault such as an open circuit, it is easy to cause the explosion and fire of the faulty battery, which will seriously affect the safe operation of the substation. (5) If one battery voltage reaches the cut-off voltage (such as 1.8V) in a group of storage batteries, then the discharge work cannot continue, thereby affecting the judgment of the capacity of this group of other storage batteries.

Contents of the invention

In view of this, the embodiments of the present application provide a method and system for estimating the battery capacity, so as to safely and efficiently determine the capacity of the battery, and to grasp the capacity of the battery in time.

In order to achieve the above objectives, the technical solutions provided in the embodiments of the present application are as follows:

A battery capacity estimation method, comprising the following steps:

Detect the conductance of the battery when it is working;

Respectively obtain the conductance base number, proportional coefficient and conductance reference value corresponding to the storage battery;

calculating the calculated capacity of the storage battery according to the conductance, conductance base, proportional coefficient and conductance reference value;

comparing the calculated capacity of the battery with a zero value;

The capacity of the storage battery is obtained according to the comparison result.

Preferably, in the battery capacity estimation method provided in the embodiment of the present application, the detection of the conductance of the battery during operation specifically includes:

Connect the positive and negative poles of the storage battery to the detection load to discharge;

controlling the storage battery to discharge according to a preset discharge rate, and timing;

When the timing time is equal to the preset time, the conductance of the storage battery is detected.

Preferably, in the battery capacity estimation method provided in the embodiment of the present application, before the detection of the conductance of the battery during operation, it further includes:

Carry out multiple tests for a certain type of battery in advance;

Calculate the conductance base, proportional coefficient and conductance reference value of this type of battery according to the test results;

The corresponding relationship between the battery model and the conductance base, the proportional coefficient and the conductance reference value is established, and the corresponding relationship between different types of batteries forms a corresponding relationship table.

Preferably, in the storage battery capacity estimation method provided in the embodiment of the present application, the acquisition of the conductance base, proportional coefficient and conductance reference value corresponding to the storage battery specifically includes:

Obtain the model of the storage battery for conductivity detection;

Find the model of the storage battery in the correspondence table, and obtain the conductance base, proportional coefficient and conductance reference value corresponding to the storage battery according to the correspondence relation.

Preferably, in the storage battery capacity estimation method provided in the embodiment of the present application, said obtaining the storage battery capacity according to the comparison result specifically includes:

When the calculated capacity of the storage battery is greater than zero, the calculated capacity is used as the capacity of the storage battery;

When the calculated capacity of the storage battery is less than or equal to a zero value, it is determined that the capacity of the storage battery is zero.

A storage battery capacity estimation system, comprising:

A conductivity tester, a parameter acquisition unit, a calculation capacity acquisition unit, a comparison unit and a determination unit, wherein:

The conductance tester is used to detect the conductance of the storage battery during operation;

The parameter acquisition unit is configured to respectively acquire the conductance base, proportional coefficient and conductance reference value corresponding to the storage battery;

The calculation capacity acquisition unit is configured to calculate the calculation capacity of the storage battery according to the conductance, conductance base, proportional coefficient and conductance reference value;

The comparison unit is used to compare the calculated capacity of the storage battery with a zero value;

The determination unit is configured to obtain the capacity of the storage battery according to the comparison result.

Preferably, in the battery capacity estimation system provided in the embodiment of the present application, the battery is discharged according to a preset discharge rate;

The conductivity tester also includes: a timer,

The timer is connected with the conductance tester, and is used to time the time for the storage battery to discharge according to the preset discharge rate, and when the counted time is equal to the preset time, the conductance tester is controlled to start working.

Preferably, the battery capacity estimation system provided in the embodiment of the present application further includes: a parameter preset unit, including: a pre-test unit, a parameter calculation unit, and a corresponding relationship establishment unit, wherein:

The pre-test unit is used to perform multiple tests for a certain type of battery in advance;

The parameter calculation unit is used to calculate the conductance base, proportional coefficient and conductance reference value of the type of battery according to the test results;

The corresponding relationship establishing unit is used to establish the corresponding relationship between the battery model and the conductance base, the proportional coefficient and the conductance reference value, and the corresponding relationship between different types of batteries forms a corresponding relationship table.

Preferably, in the battery capacity estimation system provided in the embodiment of the present application, the parameter acquisition unit includes: a model acquisition unit and a query unit, wherein:

A model acquisition unit, configured to acquire the model of the storage battery for conducting conductance detection;

The query unit is configured to search for the model of the storage battery in the correspondence table, and obtain the conductance base, proportional coefficient and conductance reference value corresponding to the storage battery according to the correspondence.

Preferably, in the battery capacity estimation system provided by the embodiment of the present application, the determining unit includes: a first determining subunit and a second determining subunit, wherein:

A first determining subunit, connected to the comparison unit, configured to use the calculated capacity as the capacity of the battery when the calculated capacity of the battery is greater than zero;

The second determination subunit is connected with the comparison unit and is used for determining that the capacity of the storage battery is zero when the calculated capacity of the storage battery is less than or equal to zero.

It can be seen from the above technical solutions that in the battery capacity estimation method provided by the embodiment of the present application, the method needs to know the model of the battery when testing different types of batteries, and obtain the corresponding estimation model of the battery according to the model of the battery. Parameters, and then detect the conductance of the battery to calculate the calculated capacity of the battery, then compare the calculated capacity with the zero value, and get the estimated capacity of the battery according to the comparison result.

Compared with the prior art, this method does not need to carry out 100% checking discharge on the battery when testing the capacity of the battery, and only needs to detect the conductance of the battery to estimate the capacity of the battery. Short, high efficiency, can quickly determine the capacity of the battery. Therefore, this method can be used in some cases where the capacity of the battery needs to be tested urgently, and in the acceptance, the performance status of the battery can be detected and judged in real time, and major faults such as open circuit of the battery can be judged safely and efficiently.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments described in this application. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic flow chart of a battery capacity estimation method provided in an embodiment of the present application;

FIG. 2 is a schematic diagram of a detailed structure for detecting the conductance of a storage battery during operation provided by an embodiment of the present application;

Fig. 3 is another schematic structural diagram of the storage battery capacity estimation method provided by the embodiment of the present application;

Fig. 4 is another structural schematic diagram of the storage battery capacity estimation method provided by the embodiment of the present application;

FIG. 5 is a schematic structural diagram of a storage battery capacity estimation system provided in an embodiment of the present application;

Fig. 6 is another schematic structural diagram of the storage battery capacity estimation system provided by the embodiment of the present application;

FIG. 7 is another structural schematic diagram of the battery capacity estimation system provided by the embodiment of the present application;

FIG. 8 is another structural schematic diagram of the battery capacity estimation system provided by the embodiment of the present application.

detailed description

In the existing power system, this can be achieved for 220KV and 500KV substations, because there are two sets of storage batteries in this type of substation, one set of storage batteries can keep working, and the other set can be used for testing, while for 110KV The substation is difficult to realize, because this type of substation has only one set of battery packs, so for the 110KV substation, only 50% checking discharge test can be carried out on the battery, but the overall condition of the battery cannot be tested, and the battery cannot be understood of the total capacity.

In addition, the time required for the traditional battery check charging and discharging work is relatively long: the 110KV substation (with a set of batteries) needs at least 13 hours for charging and discharging; while the 220KV and 500KV substations (with two sets of batteries) ) It takes at least 24 hours to charge and discharge each set of batteries, and at least 48 hours for two sets of batteries.

For this reason, the application provides a method and system for estimating battery capacity. The method establishes a model for estimating battery capacity. When testing different types of batteries, it is only necessary to know the model of the battery and detect the conductance of the battery to quickly Determine the capacity of the battery.

The above is the core idea of the present application. In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

Embodiment one:

FIG. 1 is a schematic flowchart of a battery capacity estimation method provided in an embodiment of the present application.

As shown in Figure 1, the battery capacity estimation method includes the following steps:

S100: Detect the conductance of the storage battery when it is working.

During detection, the conductance of the battery can be measured with a conductance detector. In the embodiment of the present application, a conductivity tester produced by MIDTRONICS (Midt) Company is used.

S200: Respectively acquire a conductance base, a proportional coefficient, and a conductance reference value corresponding to the storage battery.

For different types of batteries, due to different manufacturers, their production processes and product specifications are different. In addition, even if the manufacturers are the same, the product specifications of different types of batteries are also different. Therefore, for different types of batteries, the corresponding conductance base, proportional coefficient and conductance reference value are also different.

Here conductance base, scale factor and conductance reference are parameters defined by the model used to estimate battery capacity.

S300: Calculate the calculated capacity of the storage battery according to the conductance, conductance base, proportional coefficient, and conductance reference value.

After the conductance base, proportional coefficient and conductance reference value are obtained, use the estimation formula to calculate the calculation capacity of the battery. The estimation formula here is:

Conductance reference value - proportional coefficient (conductance base - conductance detection value);

Using the above estimation formula, a calculated capacity value of the battery can be obtained.

S400: Comparing the calculated capacity of the storage battery with a zero value.

The main function of this step is to judge the magnitude relationship between the calculated capacity value calculated in step S300 and the zero value. This is because in some cases, the calculated capacity value of the storage battery may appear negative, which obviously does not conform to the actual situation.

S500: Obtain the capacity of the storage battery according to the comparison result.

In this step, when the comparison result is: the calculated capacity of the storage battery is greater than zero, then the calculated capacity is taken as the capacity of the storage battery;

And when the comparison result is: the calculated capacity of the storage battery is less than or equal to zero, then it is determined that the capacity of the storage battery is zero.

That is, all cases where the calculated capacity value is negative are eliminated.

In addition, in the embodiment of the present application, steps S400 and S500 can be implemented by setting an estimation model, specifically: setting a MAX function, and using zero value and calculation capacity as the two quantities of the MAX function, namely:

Battery capacity C＝MAX【0, conductance reference value - proportional coefficient × (conductance base - detection conductance value)】

In this way, after the calculated capacity of the storage battery is obtained, the calculated capacity can be directly substituted into the estimation model to obtain the capacity of the storage battery.

It can be seen from the above technical solutions that in the battery capacity estimation method provided by the embodiment of the present application, the method needs to know the model of the battery when testing different types of batteries, and obtain the corresponding estimation model of the battery according to the model of the battery. Parameters, and then detect the conductance of the battery to calculate the calculated capacity of the battery, then compare the calculated capacity with the zero value, and get the estimated capacity of the battery according to the comparison result.

Compared with the prior art, this method does not need to carry out 100% checking discharge on the battery when testing the capacity of the battery, and only needs to detect the conductance of the battery to estimate the capacity of the battery. Short, high efficiency, can quickly determine the capacity of the battery. Therefore, this method can be used in some cases where the capacity of the battery needs to be tested urgently, and in the acceptance, the performance status of the battery can be detected and judged in real time, and major faults such as open circuit of the battery can be judged safely and efficiently.

In addition, in the process of implementing the technical solution of the present application, the applicant discovered the relationship between the capacity of the battery and the conductance of the battery after a year of research and testing on the correlation between battery capacity and conductance of 40 battery packs (about 3,200 batteries). There is a great correlation between them. The specific relationship is: the larger the battery conductance, the larger the battery capacity; the smaller the battery conductance, the smaller the battery capacity, and there is a certain proportional relationship between the battery conductance and the battery capacity. This degree of correlation has reached more than 90%. According to the conductance of the battery, the capacity of the battery can be estimated. Based on this principle, the present application improves the existing checking charging and discharging process of batteries, greatly shortens working time, improves working efficiency, reduces labor intensity, and can bring greater economic benefits to implementing units.

Embodiment two:

In the above-mentioned embodiments, when detecting the conductance of the battery when it is working, in order to avoid the fluctuation when the battery just starts to discharge from affecting the detection results, in the embodiment of the present application, the steps of detecting the conductance of the battery when it is working are described in detail .

FIG. 2 is a schematic diagram of a detailed structure for detecting conductance of a storage battery during operation provided by an embodiment of the present application.

As shown in Figure 2, the steps of detecting the conductance of the storage battery during operation include:

S101: Connect the positive and negative poles of the storage battery to a detection load to discharge.

S102: Control the storage battery to discharge according to a preset discharge rate, and perform timing.

Here, the preset discharge rate may be a 10-hour discharge rate. The purpose of timing is to control that the storage battery has been discharged for a period of time during the conductance detection, so as to avoid the influence of the fluctuation when the storage battery starts to discharge on the detection result.

S103: Detect the conductance of the storage battery when the counted time is equal to a preset time.

Here, the preset time may be 10 minutes. After 10 minutes, the discharge of the battery tends to be stable, and at this time, the conductance of the battery can be directly detected.

In the method provided in the embodiment of the present application, the storage battery has been discharged for a period of time when the conductance detection is performed, so that the influence of the fluctuation when the storage battery starts to discharge on the detection result can be avoided.

Embodiment three:

FIG. 3 is another structural schematic diagram of the battery capacity estimation method provided in the embodiment of the present application.

As shown in Figure 3, the method also includes the following steps before detecting the conductance of the accumulator during operation:

S600: Carry out multiple tests for a certain type of battery in advance.

S700: Calculate the conductance base, proportional coefficient and conductance reference value of this type of battery according to the test results.

S800: Establish the correspondence between the battery model and the conductance base, the proportional coefficient, and the conductance reference value, and form a correspondence table for the correspondence of different types of batteries.

The pre-established correspondence table here may be stored in a storage medium.

By establishing the correspondence between different types of batteries and their conductance base, proportional coefficient, and conductance reference value, it is convenient to quickly find the conductance base, scale coefficient, and conductance reference value when the type of battery is subsequently tested.

FIG. 4 is another structural schematic diagram of the battery capacity estimation method provided in the embodiment of the present application.

As shown in Figure 4, on the basis of the steps provided in Figure 3, the method obtains the conductance base, proportional coefficient and conductance reference value corresponding to the storage battery, specifically including the following steps:

S201: Obtain the model of the storage battery for conductance detection.

S202: Find the model of the storage battery in the correspondence table, and obtain the conductance base, proportional coefficient and conductance reference value corresponding to the storage battery according to the correspondence relation.

Since the corresponding relationship between the battery model and its conductance base, proportional coefficient and conductance reference value has been established in the above step S800, when estimating the battery capacity each time, you can directly find a certain value directly according to the corresponding relationship table. The conductance base, proportional coefficient and conductance reference value corresponding to the type of battery.

Embodiment four:

The embodiment of the present application also provides a battery capacity estimation system, and FIG. 5 is a schematic structural diagram of the battery capacity estimation system.

As shown in Fig. 5, in the figure 1 battery or battery pack, the battery capacity estimation system includes: conductivity tester 2, parameter acquisition unit 3, calculation capacity acquisition unit 4, comparison unit 5 and determination unit 6, wherein:

Conductivity tester 2 is connected with storage battery 1, and is used for testing the conductance of storage battery when working. In the embodiment of the present application, a conductivity tester produced by MIDTRONICS (Midt) Company is used.

In other embodiments of the present application, in order to avoid the impact of the fluctuation on the detection result when the storage battery just starts to discharge, as shown in FIG. The conductivity tester 2 is connected to time the time for the storage battery to be discharged according to the preset discharge rate, and when the counted time is equal to the preset time, the conductance tester 2 is controlled to start working.

The parameter acquiring unit 3 is used to respectively acquire the conductance base, the proportional coefficient and the conductance reference value corresponding to the storage battery 1 . The calculation capacity acquisition unit 4 is connected with the conductance tester 2 and the parameter acquisition unit 3 respectively, and is used to calculate the calculation capacity of the storage battery according to the conductance, conductance base, proportional coefficient and conductance reference value, and the comparison unit 5 and the calculation The capacity acquisition unit 4 is connected to compare the calculated capacity of the storage battery with a zero value,

The determination unit 6 is connected with the comparison unit 5, and is used to obtain the capacity of the storage battery according to the comparison result.

As shown in FIG. 7, in the embodiment of the present application, the determining unit 6 may include: a first determining subunit and a second determining subunit, wherein:

The first determination subunit 61 is connected to the comparison unit 5, and is used to use the calculated capacity as the capacity of the battery when the calculated capacity of the battery is greater than zero;

The second determination subunit 62 is connected with the comparison unit 5 and configured to determine that the capacity of the storage battery is zero when the calculated capacity of the storage battery is less than or equal to zero.

It can be seen from the above description that the comparison unit 5 and the determination unit 6 can be implemented by setting an estimation model, specifically: setting a MAX function, and using zero value and calculation capacity as the two quantities of the MAX function, namely:

Battery capacity C＝MAX【0, conductance reference value - proportional coefficient × (conductance base - detection conductance value)】

In this way, after the calculated capacity of the storage battery is obtained, the calculated capacity can be directly substituted into the estimation model to obtain the capacity of the storage battery.

Compared with the existing technology, the system does not need to perform 100% checking discharge on the battery when testing the capacity of the battery. It only needs to detect the conductance of the battery to estimate the capacity of the battery. Therefore, when the method is tested, the working time Short, high efficiency, can quickly determine the capacity of the battery. Therefore, this method can be used in some cases where the capacity of the battery needs to be tested urgently, and in the acceptance, the performance status of the battery can be detected and judged in real time, and major faults such as open circuit of the battery can be judged safely and efficiently.

Embodiment five:

FIG. 8 is another schematic structural diagram of the storage battery estimation system provided by the embodiment of the present application.

As shown in FIG. 8, in other embodiments of the present application, the system may also include: a parameter preset unit 8, including: a pre-test unit 81, a parameter calculation unit 82, and a corresponding relationship establishment unit 83, wherein:

The pre-test unit 81 is used to perform multiple tests for a certain type of storage battery in advance;

The parameter calculation unit 82 is used to calculate the conductance base, proportional coefficient and conductance reference value of the type of storage battery according to the test results;

The corresponding relationship establishment unit 83 is used to establish the corresponding relationship between the battery model and the conductance base, the proportional coefficient and the conductance reference value, and the corresponding relationship between different types of batteries forms a corresponding relationship table. The pre-established correspondence table here may be stored in a storage medium.

By establishing the correspondence between different types of batteries and their conductance base, proportional coefficient, and conductance reference value, it is convenient to quickly find the conductance base, scale coefficient, and conductance reference value when the type of battery is subsequently tested.

In addition, as shown in Figure 8, on the basis of the parameter preset unit, the parameter acquisition unit 3 may include: a model acquisition unit 31 and a query unit 32, wherein:

The model acquiring unit 31 is configured to acquire the model of the storage battery for conductance detection.

The query unit 32 is configured to search the correspondence table to obtain the model of the storage battery, and obtain the conductance base, proportional coefficient and conductance reference value corresponding to the storage battery according to the correspondence.

For the convenience of description, when describing the above devices, functions are divided into various units and described separately. Of course, when implementing the present application, the functions of each unit can be realized in one or more pieces of software and/or hardware.

It can be known from the above description of the implementation manners that those skilled in the art can clearly understand that the present application can be implemented by means of software plus a necessary general-purpose hardware platform. Based on this understanding, the essence of the technical solution of this application or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products can be stored in storage media, such as ROM/RAM, disk , CD, etc., including several instructions to make a computer device (which may be a personal computer, server, or network device, etc.) execute the methods described in various embodiments or some parts of the embodiments of the present application.

Each embodiment in this specification is described in a progressive manner, the same and similar parts of each embodiment can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, as for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and for related parts, please refer to part of the description of the method embodiment. The system embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in One place, or it can be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. It can be understood and implemented by those skilled in the art without creative effort.

The application can be used in numerous general purpose or special purpose computing system environments or configurations. Examples: personal computers, server computers, handheld or portable devices, tablet-type devices, multiprocessor systems, microprocessor-based systems, set-top boxes, programmable consumer electronics, network PCs, minicomputers, mainframe computers, including A distributed computing environment for any of the above systems or devices, etc.

This application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including storage devices.

It should be pointed out that those skilled in the art can make some improvements and modifications without departing from the principles of the present application, and these improvements and modifications should also be regarded as the protection scope of the present application.

The above descriptions are only preferred embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the present application will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A storage battery capacity estimation method, is characterized in that, comprises the following steps: Detect the conductance of the battery when it is working; Respectively obtain the conductance base, proportional coefficient and conductance reference value corresponding to the model of the storage battery; calculating the calculated capacity of the storage battery according to the detected value of the conductance, the conductance base, the proportional coefficient and the conductance reference value; The estimation formula of the calculation capacity is: conductance reference value - proportional coefficient × (conductance base - conductance detection value); comparing the calculated capacity of the battery with a zero value; The capacity of the storage battery is obtained according to the comparison result. 2. The method according to claim 1, wherein the detecting the conductance of the storage battery specifically comprises: Connect the positive and negative poles of the storage battery to the detection load to discharge; controlling the storage battery to discharge according to a preset discharge rate, and timing; When the timing time is equal to the preset time, the conductance of the storage battery is detected. 3. The method according to claim 1, further comprising: Carry out multiple tests for a certain type of battery in advance; Calculate the conductance base, proportional coefficient and conductance reference value of this type of battery according to the test results; The corresponding relationship between the battery model and the conductance base, the proportional coefficient and the conductance reference value is established, and the corresponding relationship between different types of batteries forms a corresponding relationship table. 4. The method according to claim 3, wherein said acquiring the conductance base, proportional coefficient and conductance reference value corresponding to said storage battery specifically comprises: Obtain the model of the storage battery for conductivity detection; Find the model of the storage battery in the correspondence table, and obtain the conductance base, proportional coefficient and conductance reference value corresponding to the storage battery according to the correspondence relation. 5. The method according to claim 1, wherein the obtaining the capacity of the storage battery according to the comparison result specifically comprises: When the calculated capacity of the storage battery is greater than zero, the calculated capacity is used as the capacity of the storage battery; When the calculated capacity of the storage battery is less than or equal to a zero value, it is determined that the capacity of the storage battery is zero. 6. A storage battery capacity estimation system, characterized in that it comprises: A conductivity tester, a parameter acquisition unit, a calculation capacity acquisition unit, a comparison unit and a determination unit, wherein: The conductance tester is used to detect the conductance of the storage battery during operation; The parameter acquisition unit is configured to respectively acquire the conductance base, proportional coefficient and conductance reference value corresponding to the storage battery; The calculation capacity acquisition unit is used to calculate the calculation capacity of the storage battery according to the detection value of the conductance, the conductance base, the proportional coefficient and the conductance reference value; the calculation formula for the calculation capacity is: conductance reference value - proportional coefficient × (conductance base - the detection value of conductance); The comparison unit is used to compare the calculated capacity of the storage battery with a zero value; The determination unit is configured to obtain the capacity of the storage battery according to the comparison result. 7. The system according to claim 6, further comprising: a timer connected to the conductivity tester; The storage battery is discharged according to a preset discharge rate; The timer is used to count the time for the storage battery to discharge according to the preset discharge rate, and when the counted time is equal to the preset time, the conductivity tester is controlled to start working. 8. The system according to claim 6, characterized in that, the system further comprises: a parameter preset unit, including: a pre-test unit, a parameter calculation unit and a corresponding relationship establishment unit, wherein: The pre-test unit is used to perform multiple tests for a certain type of battery in advance; The parameter calculation unit is used to calculate the conductance base, proportional coefficient and conductance reference value of the type of battery according to the test results; The corresponding relationship establishing unit is used to establish the corresponding relationship between the battery model and the conductance base, the proportional coefficient and the conductance reference value, and the corresponding relationship between different types of batteries forms a corresponding relationship table. 9. The system according to claim 8, wherein the parameter acquisition unit comprises: a model acquisition unit and a query unit, wherein: A model acquisition unit, configured to acquire the model of the storage battery for conducting conductance detection; The query unit is configured to search for the model of the storage battery in the correspondence table, and obtain the conductance base, proportional coefficient and conductance reference value corresponding to the storage battery according to the correspondence. 10. The system according to claim 6, wherein the determining unit comprises: a first determining subunit and a second determining subunit, wherein: A first determining subunit, connected to the comparison unit, configured to use the calculated capacity as the capacity of the battery when the calculated capacity of the battery is greater than zero; The second determination subunit is connected with the comparison unit and is used for determining that the capacity of the storage battery is zero when the calculated capacity of the storage battery is less than or equal to zero.