CN105629174B - A kind of invariable power parameter determination method and device - Google Patents

Abstract

Embodiments of the present invention provide a method and device for determining a constant power parameter, which relate to the field of communication technology and are used to provide accuracy and efficiency for determining a constant power parameter. The method includes: determining the 10-hour rate actual discharge capacity C and the actual discharge watt-hour W ₀ of the battery to be tested, the actual discharge watt-hour W ₀ being the watt-hour when the battery to be tested is discharged to the termination voltage V; Set the discharge hourly rate L, and obtain the corresponding discharge coefficient K from the correspondence between the discharge hourly rate and the discharge coefficient; based on the L, the K, the C, the W ₀ , the V, and The 10-hour rate rated capacity C ₀ of the battery to be tested determines the constant power parameter W of the battery to be tested.

Description

A method and device for determining constant power parameters

technical field

The present invention relates to the field of communication technology, in particular to a constant power parameter determination method and device.

Background technique

In the communication power supply system, most of the communication loads are constant power loads. Therefore, in the application of communication power supply, the constant power characteristic is a very important indicator. , a discharge characteristic of the communication power supply discharging. With the increasing number of backup power supplies for communication power supplies, constant power characteristics are also widely used. For example, the backup power supply can be lithium iron phosphate batteries or lead-acid batteries. Features, high current performance and other aspects have outstanding advantages over lead-acid batteries, so they are widely used, especially for the power supply of communication base stations where communication is limited by environmental space, load-bearing and other conditions. However, the discharge characteristics of the current application standards, specification technical requirements and technical methods of these batteries are constant current discharge characteristics, but not constant power characteristics. Repeated calculations lead to relatively low accuracy and efficiency. Therefore, a constant power parameter determination method and device are urgently needed.

Contents of the invention

Embodiments of the present invention provide a method and device for determining constant power parameters, which are used to improve the accuracy and efficiency of determining constant power parameters.

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

In the first aspect, a method for determining a constant power parameter is provided, wherein the method includes:

Determine the 10-hour rate actual discharge capacity C and the actual discharge watt-hour W ₀ of the battery to be tested, the actual discharge watt-hour W ₀ is the watt-hour when the battery to be tested is discharged to the termination voltage V;

Based on the preset hourly discharge rate L, the corresponding discharge coefficient K is obtained from the corresponding relationship between the discharge hourly rate and the discharge coefficient;

Based on the L, the K, the C, the W ₀ , the V, and the 10-hour rate rated capacity C ₀ of the battery to be tested, the constant power parameter W of the battery to be tested is determined.

Wherein, the storage battery to be detected refers to a storage battery whose constant power parameter needs to be determined, and the storage battery may be a lithium iron phosphate storage battery or a lead-acid storage battery, which is not limited in the present invention.

In addition, the actual discharge capacity C of the 10-hour rate refers to the actual power released when the cell voltage of the test battery is lowered to the cut-off voltage for 10 hours. The 10-hour rate is the time unit when the battery is discharged, which can also be called the rate.

Furthermore, the termination voltage refers to the load voltage of the battery when the discharge is terminated, and the termination voltage cannot be lower than the minimum working voltage that the battery can withstand. For example, when the battery is a lithium iron phosphate battery, the termination voltage can be 2.5V /Single cell, a single cell refers to a single battery, and the termination voltage of a single lithium iron phosphate battery should not be lower than 2.0V. Wherein, the cut-off voltage of the battery can be set in advance, and the present invention does not limit the specific cut-off voltage.

With reference to the first aspect, in a first possible implementation of the first aspect, based on the L, the K, the C, the W ₀ , the V, and the 10 hours of the storage battery to be tested rate rated capacity C ₀ , determine the constant power parameter W of the storage battery to be tested, including:

Based on the L, the K, the C, the W ₀ , the V, and the 10-hour rate rated capacity C ₀ of the battery to be tested, the constant value of the battery to be tested is determined according to formula (1). Power parameter W;

Since the preset discharge hourly rate L and the end voltage V can be set in advance, the constant power parameter W under different discharge hourly rates and different end voltages can be quickly and effectively determined through the formula (1), thus eliminating the need for a large number of Experiments and repeated calculations have improved the accuracy and efficiency of determining constant power parameters.

With reference to the first aspect, in a second possible implementation of the first aspect, in the correspondence between the discharge hourly rate and the discharge coefficient, the discharge hourly rate includes multiple value ranges, and the discharge The coefficient includes a plurality of values, and the plurality of value ranges correspond to the plurality of values in ascending order.

It should be noted that the multiple value ranges included in the discharge hourly rate may be multiple continuous value ranges or multiple discontinuous value ranges.

In combination with the second possible implementation of the first aspect, in the third possible implementation of the first aspect, the multiple value ranges are respectively [1/4, 1/3), [1/3 , 0.5), [0.5, 1), [1, 5), [5, 10], the multiple values are 88%, 93%, 95%, 97%, 100%, respectively.

In the second aspect, a device for determining a constant power parameter is improved, and the device includes:

The first determination unit is used to determine the 10-hour rate actual discharge capacity C and the actual discharge watt-hour W ₀ of the storage battery to be tested, and the actual discharge watt-hour W ₀ is the watt-hour when the storage battery to be tested is discharged to the termination voltage V ;

An acquisition unit, configured to acquire the corresponding discharge coefficient K from the correspondence between the discharge hour rate and the discharge coefficient based on the preset discharge hourly rate L;

The second determining unit is configured to determine the battery to be tested based on the L, the K, the C, the W ₀ , the V, and the 10-hour rate rated capacity C ₀ of the battery to be tested The constant power parameter W.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the second determining unit is specifically configured to:

Based on the L, the K, the C, the W ₀ , the V, and the 10-hour rate rated capacity C ₀ of the battery to be tested, the constant value of the battery to be tested is determined according to formula (2). Power parameter W;

With reference to the second aspect, in a second possible implementation of the second aspect, in the correspondence between the discharge hourly rate and the discharge coefficient, the discharge hourly rate includes multiple value ranges, and the discharge The coefficient includes a plurality of values, and the plurality of value ranges correspond to the plurality of values in ascending order.

In combination with the second possible implementation of the second aspect, in the third possible implementation of the second aspect, the multiple value ranges are respectively [1/4, 1/3), [1/3 , 0.5), [0.5, 1), [1, 5), [5, 10], the multiple values are 88%, 93%, 95%, 97%, 100%, respectively.

_{The constant power parameter determination method and device provided by the embodiments of the present invention determine the 10-hour rate actual discharge capacity C and the actual discharge watt-hour W 0 of} the storage battery to be tested. The watt-hour of the voltage V is based on the preset discharge hourly rate L, and the corresponding discharge coefficient K is obtained from the correspondence between the discharge hourly rate and the discharge coefficient, based on the preset discharge hourly rate L, the discharge coefficient K, and the actual discharge Capacity C, actual discharge watt-hour W ₀ , termination voltage V, and the 10-hour rate rated capacity C ₀ of the battery to be tested determine the constant power parameter W of the battery to be tested, thereby eliminating the need for a large number of tests and repeated calculations, thereby improving the Determine constant power parameter accuracy and efficiency.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying 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 some of the present invention. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

Fig. 1 is a flowchart of a constant power parameter determination method provided by an embodiment of the present invention;

Fig. 2 is a schematic structural diagram of a constant power parameter determination device provided by an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Before introducing the present invention, the application scenario of the present invention will be described first. At present, in the communication power supply system, most of the communication loads are constant power loads. Therefore, in the application of communication power supply, the constant power characteristic is a very important index. . Although there are more and more backup power supplies for communication power supplies, such as lithium iron phosphate batteries and lead-acid batteries, etc., the discharge characteristics of these backup power supplies are constant current discharge characteristics in the current application standards, specification technical requirements and technical methods, while Without constant power characteristics, in order to obtain constant power characteristics under different discharge hourly rates and different end voltage conditions, a large number of experiments and repeated calculations are required, resulting in relatively low accuracy and efficiency.

FIG. 1 is a method for determining constant power parameters provided by an embodiment of the present invention. Referring to FIG. 1 , the method includes the following steps.

Step 101: Determine the 10-hour rate actual discharge capacity C and the actual discharge watt-hour W ₀ of the battery to be tested. The actual discharge watt-hour W ₀ is the watt-hour when the battery to be tested is discharged to the termination voltage V.

Wherein, the storage battery to be detected refers to a storage battery whose constant power parameter needs to be determined, and the storage battery may be a lithium iron phosphate storage battery or a lead-acid storage battery, which is not limited in this embodiment of the present invention.

The 10-hour rate actual discharge capacity C refers to the actual electricity released when the cell voltage of the test battery is lowered to the cut-off voltage for 10 hours. The 10-hour rate is the time unit when the battery is discharged, which can also be called the rate.

Termination voltage refers to the load voltage of the battery at the end of discharge. The termination voltage cannot be lower than the minimum working voltage that the battery can withstand. For example, when the battery is a lithium iron phosphate battery, the termination voltage can be 2.5V/cell , The monomer refers to a single battery, and the termination voltage of a single lithium iron phosphate battery should not be lower than 2.0V. Wherein, the cut-off voltage of the storage battery can be set in advance, and the embodiment of the present invention does not limit the specific cut-off voltage.

Step 102: Based on the preset discharge hourly rate L, the corresponding discharge coefficient K is obtained from the correspondence between the discharge hourly rate and the discharge coefficient.

Among them, the discharge hourly rate is a discharge parameter for measuring the discharge speed of the battery, and can also be called the discharge rate. The preset discharge hourly rate L can be set in advance. For example, the preset discharge hourly rate L can be 5 hours, 1 hour, etc. The embodiments of the present invention do not limit this; the discharge coefficient is a constant corresponding to the hourly rate of discharge, and different hourly rates of discharge may correspond to different constants, and the discharge coefficient is greater than 0 and less than or equal to 1.

Optionally, in the corresponding relationship between the discharge hourly rate and the discharge coefficient, the discharge hourly rate includes multiple value ranges, the discharge coefficient includes multiple values, and the multiple value ranges and the multiple values are in accordance with One-to-one correspondence from small to large.

It should be noted that the multiple value ranges included in the discharge hourly rate may be multiple continuous value ranges or multiple discontinuous value ranges.

When the multiple value ranges included in the discharge hourly rate are multiple continuous value ranges, the multiple value ranges may be [1/4, 1/3), [1/3, 0.5), [0.5 , 1), [1, 5), [5, 10], the multiple numerical values of the discharge coefficient corresponding to the multiple value ranges included in the discharge hourly rate can be 88%, 93%, 95%, 97%, 100%. Wherein, the corresponding relationship between the discharge hourly rate and the discharge coefficient can be stored as shown in Table 1 below.

Table 1

Discharge hourly rate discharge coefficient [1/4, 1/3) 100% [1/3, 0.5) 97% (1～0.5] 95% (0.5～1/3] 93% (1/3～1/4] 88%

It should be noted that the embodiment of the present invention is only illustrated by taking the correspondence between the discharge hourly rate and the discharge coefficient shown in the above Table 1 as an example, and the above Table 1 does not limit the embodiment of the present invention.

Step 103: Based on the preset discharge hourly rate L, discharge coefficient K, actual discharge capacity C, actual discharge watt-hour W ₀ , termination V, and the 10-hour rate rated capacity C ₀ of the battery to be tested, determine the constant power of the battery to be tested parameter W.

Wherein, after the battery to be tested is determined, the 10-hour rate rated capacity _C0 of the battery to be tested can also be determined. The rated capacity _C0 is usually determined by the manufacturer of the battery to be tested and marked on the battery to be tested. superior.

Optionally, based on the preset discharge hourly rate L, discharge coefficient K, actual discharge capacity C, actual discharge watt-hour W ₀ , termination V, and the 10-hour rate rated capacity C ₀ of the storage battery to be tested, proceed according to formula (1) Calculate and determine the constant power parameter W of the storage battery to be tested.

Since the preset discharge hourly rate L and the end voltage V can be set in advance, the constant power parameter W under different discharge hourly rates and different end voltages can be quickly and effectively determined through the formula (1), thus eliminating the need for a large number of Experiments and repeated calculations have improved the accuracy and efficiency of determining constant power parameters.

The embodiment of the present invention provides a constant power parameter determination method, by determining the 10-hour rate actual discharge capacity C and the actual discharge watt-hour W ₀ of the battery to be tested, the actual discharge watt-hour W ₀ is the battery to be tested to discharge to the end voltage V Based on the preset discharge hourly rate L, the corresponding discharge coefficient K is obtained from the correspondence between the discharge hourly rate and the discharge coefficient, based on the preset discharge hourly rate L, the discharge coefficient K, and the actual discharge capacity C , the actual discharge watt-hour W ₀ , the termination voltage V, and the 10-hour rate rated capacity C ₀ of the battery to be tested determine the constant power parameter W of the battery to be tested, thereby eliminating the need for a large number of tests and repeated calculations, thereby improving the determination of constant power Power parameter accuracy and efficiency.

Fig. 2 is a constant power parameter determination device provided by an embodiment of the present invention, referring to Fig. 2, the device includes:

The first determination unit 201 is used to determine the 10-hour rate actual discharge capacity C and the actual discharge watt-hour W ₀ of the storage battery to be tested, the actual discharge watt-hour W ₀ being the wattage when the storage battery to be tested is discharged to the termination voltage V Time;

Wherein, the storage battery to be detected refers to a storage battery whose constant power parameter needs to be determined, and the storage battery may be a lithium iron phosphate storage battery or a lead-acid storage battery, which is not limited in this embodiment of the present invention.

The 10-hour rate actual discharge capacity C refers to the actual electricity released when the cell voltage of the test battery is lowered to the cut-off voltage for 10 hours. The 10-hour rate is the time unit when the battery is discharged, which can also be called the rate.

Termination voltage refers to the load voltage of the battery at the end of discharge. The termination voltage cannot be lower than the minimum working voltage that the battery can withstand. For example, when the battery is a lithium iron phosphate battery, the termination voltage can be 2.5V/cell , The monomer refers to a single battery, and the termination voltage of a single lithium iron phosphate battery should not be lower than 2.0V. Wherein, the cut-off voltage of the storage battery can be set in advance, and the embodiment of the present invention does not limit the specific cut-off voltage.

The acquisition unit 202 is configured to acquire the corresponding discharge coefficient K from the correspondence between the discharge hour rate and the discharge coefficient based on the preset discharge hour rate L;

Among them, the discharge hourly rate is a discharge parameter for measuring the discharge speed of the battery, and can also be called the discharge rate. The preset discharge hourly rate L can be set in advance. For example, the preset discharge hourly rate L can be 5 hours, 1 hour, etc. The embodiments of the present invention do not limit this; the discharge coefficient is a constant corresponding to the hourly rate of discharge, and different hourly rates of discharge may correspond to different constants, and the discharge coefficient is greater than 0 and less than or equal to 1.

The second determining unit 203 is configured to determine the to-be-tested battery based on the L, the K, the C, the W ₀ , the V, and the 10-hour rate rated capacity C ₀ of the battery to be tested The constant power parameter W of the battery.

Optionally, the second determining unit 203 is specifically configured to:

Based on the L, the K, the C, the W ₀ , the V, and the 10-hour rate rated capacity C ₀ of the battery to be tested, the constant value of the battery to be tested is determined according to formula (2). Power parameter W;

Since the preset discharge hourly rate L and the end voltage V can be set in advance, the constant power parameter W under different discharge hourly rates and different end voltages can be quickly and effectively determined through the formula (1), thus eliminating the need for a large number of Experiments and repeated calculations have improved the accuracy and efficiency of determining constant power parameters.

Optionally, in the correspondence between the hourly discharge rate and the discharge coefficient, the hourly discharge rate includes multiple value ranges, the discharge coefficient includes multiple values, and the multiple value ranges are the same as The multiple numerical values are in one-to-one correspondence in ascending order.

It should be noted that the multiple value ranges included in the discharge hourly rate may be multiple continuous value ranges or multiple discontinuous value ranges.

Optionally, the multiple value ranges are [1/4, 1/3), [1/3, 0.5), [0.5, 1), [1, 5), [5, 10] respectively, so The above-mentioned multiple numerical values are respectively 88%, 93%, 95%, 97%, 100%.

The embodiment of the present invention provides a constant power parameter determination device, by determining the 10-hour rate actual discharge capacity C and the actual discharge watt-hour W ₀ of the battery to be tested, the actual discharge watt-hour W ₀ is the battery to be tested to discharge to the end voltage V Based on the preset discharge hourly rate L, the corresponding discharge coefficient K is obtained from the correspondence between the discharge hourly rate and the discharge coefficient, based on the preset discharge hourly rate L, the discharge coefficient K, and the actual discharge capacity C , the actual discharge watt-hour W ₀ , the termination voltage V, and the 10-hour rate rated capacity C ₀ of the battery to be tested determine the constant power parameter W of the battery to be tested, thereby eliminating the need for a large number of tests and repeated calculations, thereby improving the determination of constant power Power parameter accuracy and efficiency.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (8)

1. A method for determining constant power parameters, characterized in that the method comprises: Determine the 10-hour rate actual discharge capacity C and the actual discharge watt-hour W ₀ of the battery to be tested, the actual discharge watt-hour W ₀ is the watt-hour when the battery to be tested is discharged to the termination voltage V; Based on the preset hourly discharge rate L, the corresponding discharge coefficient K is obtained from the corresponding relationship between the discharge hourly rate and the discharge coefficient; Based on the L, the K, the C, the W ₀ , the V, and the 10-hour rate rated capacity C ₀ of the battery to be tested, the constant power parameter W of the battery to be tested is determined. 2. The method according to claim 1, wherein the 10-hour rate rating based on the L, the K, the C, the W ₀ , the V, and the storage battery to be tested is Capacity C ₀ , to determine the constant power parameter W of the storage battery to be tested, including: Based on the L, the K, the C, the W ₀ , the V, and the 10-hour rate rated capacity C ₀ of the battery to be tested, the constant value of the battery to be tested is determined according to formula (1). Power parameter W; 3. The method according to claim 1, characterized in that, in the corresponding relationship between the discharge hourly rate and the discharge coefficient, the discharge hourly rate includes multiple value ranges, and the discharge coefficient includes multiple value, and the plurality of value ranges correspond one-to-one to the plurality of values in ascending order. 4. The method according to claim 3, characterized in that, the plurality of value ranges are respectively [1/4, 1/3), [1/3, 0.5), [0.5, 1), [1 , 5), [5, 10], the multiple values are 88%, 93%, 95%, 97%, 100%, respectively. 5. A constant power parameter determination device, characterized in that the device comprises: The first determination unit is used to determine the 10-hour rate actual discharge capacity C and the actual discharge watt-hour W ₀ of the storage battery to be tested, and the actual discharge watt-hour W ₀ is the watt-hour when the storage battery to be tested is discharged to the termination voltage V ; An acquisition unit, configured to acquire the corresponding discharge coefficient K from the correspondence between the discharge hour rate and the discharge coefficient based on the preset discharge hourly rate L; The second determining unit is configured to determine the battery to be tested based on the L, the K, the C, the W ₀ , the V, and the 10-hour rate rated capacity C ₀ of the battery to be tested The constant power parameter W. 6. The device according to claim 5, wherein the second determining unit is specifically configured to: Based on the L, the K, the C, the W ₀ , the V, and the 10-hour rate rated capacity C ₀ of the battery to be tested, the constant value of the battery to be tested is determined according to formula (2). Power parameter W; 7. The device according to claim 5, characterized in that, in the corresponding relationship between the discharge hourly rate and the discharge coefficient, the discharge hourly rate includes multiple value ranges, and the discharge coefficient includes multiple value, and the plurality of value ranges correspond one-to-one to the plurality of values in ascending order. 8. The device according to claim 7, wherein the plurality of value ranges are respectively [1/4, 1/3), [1/3, 0.5), [0.5, 1), [1 , 5), [5, 10], the multiple values are 88%, 93%, 95%, 97%, 100%, respectively.