WO2012113213A1

WO2012113213A1 - Method and device for detecting battery life

Info

Publication number: WO2012113213A1
Application number: PCT/CN2011/078985
Authority: WO
Inventors: 王振旭; 魏鹏飞
Original assignee: 华为技术有限公司
Priority date: 2011-02-21
Filing date: 2011-08-26
Publication date: 2012-08-30
Also published as: CN102175978B; CN102175978A

Abstract

Provided are a method and a device for detecting battery life. The method comprises: acquiring a temperature of a battery in an ith preset period; determining whether the temperature of the battery is greater than a preset temperature, and if the temperature of the battery is greater than the preset temperature, acquiring a modification parameter corresponding to the temperature of the battery from a correlation table of the preset temperature and the modification parameter, and subtracting the modification parameter from a preset theoretical lifetime to serve as an updated theoretical lifetime; determining whether the updated theoretical lifetime is less than or equal to i preset periods, and if the updated theoretical lifetime is less than or equal to i preset periods, generating a life end message, and reporting the life end message, wherein i≥1, and i is a positive integer. The method and device for detecting the battery life implement the detection for lifetime of batteries of various types and having different charging modes, and can effectively improve the accuracy of the detection.

Description

Battery life detection method and device

Technical field

Embodiments of the present invention relate to battery technologies, and in particular, to a battery life detecting method and device. Background technique

In the field of communication, the batteries on the device are passively replaced, posing a significant risk to the backup. At present, in the prior art, the life of the battery is detected by acquiring the corresponding relationship between the voltage and the electric quantity of the battery during discharge, so as to solve the problem that the life of the battery cannot be predicted in the prior art, and the working principle mainly includes : Under normal temperature conditions, between the battery life and the battery life provided by the battery supplier, the life state interval of N batteries is divided, and the relationship between the theoretical voltage and the power of the battery corresponding to each life state interval is obtained. When the battery is applied in practice, when the battery is tested for life for a period of time, the relationship between the voltage of the battery and the amount of electricity at that time can be obtained, and a theoretical voltage similar to the relationship between the voltage and the amount of electricity is obtained. The relationship between the electric quantity and the life state of the battery corresponding to the theoretical voltage versus the electric quantity, thereby estimating the life state of the battery.

In the process of implementing the present invention, the inventors have found that at least the following problems exist in the prior art: The above method is only suitable for mobile phone batteries and electric vehicles, etc., which are cyclic applications, that is, the battery must be subjected to frequent discharge to test the life of the battery. The accuracy of this method is greatly affected by temperature and battery capacity status. Summary of the invention

Embodiments of the present invention provide a method and a device for detecting battery life, which are used to detect the life of various types of batteries and different charging modes, and effectively improve the accuracy of detection.

Embodiments of the present invention provide a method for detecting battery life, including:

Obtaining the temperature of the battery in the ith preset period; Determining whether the temperature of the battery is greater than a preset temperature, and if the temperature of the battery is greater than the preset temperature, obtaining a correction parameter corresponding to the temperature of the battery from a preset relationship between the temperature and the correction parameter And subtracting the corrected theoretical life from the preset theoretical life as the updated theoretical life;

Determining whether the updated theoretical lifetime is less than or equal to a preset period. If the updated theoretical lifetime is less than or equal to a preset period, generating a lifetime termination message and reporting the lifetime termination message; wherein, ≥1, And is an integer.

Embodiments of the present invention provide a device for detecting battery life, including:

a temperature collecting module, configured to acquire a temperature of the battery in an i th preset period;

a temperature determining module, configured to determine whether the temperature of the battery is greater than a preset temperature;

a theoretical life processing module, configured to: if the temperature determining module determines that the temperature of the battery is greater than the temperature, obtain a correction parameter corresponding to the temperature of the battery from a preset relationship between the temperature and the corrected parameter And subtracting the corrected theoretical life from the preset theoretical life as the updated theoretical life;

a life judging module, configured to determine whether the updated theoretical lifetime is less than or equal to a preset period;

a reporting module, configured to generate a lifetime termination message and report the end of life message if the life prediction module determines that the updated theoretical lifetime is less than equal to a preset period;

Where ≥1 and is an integer.

The method and device for detecting the battery life of the embodiment of the present invention, by obtaining the temperature of the battery in the ith preset period, and when the temperature of the battery is greater than the preset temperature, from the preset relationship between the preset temperature and the correction parameter Obtaining a correction parameter corresponding to the temperature of the battery, and subtracting the preset theoretical life from the corrected parameter as the updated theoretical life. If the updated theoretical life is less than or equal to a preset period, generating and reporting the end of life The message thus realizes the detection of the lifespan of various types of batteries having different charging modes, and effectively improves the accuracy of detection. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

1 is a flow chart of an embodiment of a method for detecting battery life of the present invention;

2 is a flow chart of another embodiment of a method for detecting battery life of the present invention;

3 is a flow chart of still another embodiment of a method for detecting battery life of the present invention;

4 is a schematic structural view of an embodiment of a battery life detecting device of the present invention;

5 is a schematic structural view of another embodiment of a battery life detecting device according to the present invention; FIG. 6 is a schematic structural view of still another embodiment of a battery life detecting device of the present invention; A schematic diagram of the structure of an embodiment. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

1 is a flowchart of an embodiment of a method for detecting battery life of the present invention. As shown in FIG. 1, the method in this embodiment includes:

Step 101: Obtain the temperature of the battery in the first preset period.

For example, when the battery is floating, that is, long-term power-on, and almost no discharge, the first preset period may be the first month after the battery is powered on; when the battery is in the cycle of charging and discharging, then the first The preset period can be the first discharge cycle after the battery is powered on.

Step 102: Determine whether the temperature of the battery is greater than a preset temperature, if the temperature of the battery is greater than a preset For the temperature, the correction parameter corresponding to the temperature of the battery is obtained from the preset temperature and correction parameter correspondence table, and the preset theoretical life is subtracted from the correction parameter as the updated theoretical life.

In this embodiment, the preset temperature may be normal temperature, for example: 25 ^Q C. The battery can be a lithium ion battery, such as a lithium iron battery, a cobalt lithium battery, or the like. In addition, the theoretical life of the battery in this embodiment can be set according to the type of the battery and the life provided by the supplier of the battery. In general, the life provided by the supplier can be used as the theoretical life.

In this embodiment, due to the influence of temperature, the life of the battery actually used is generally less than the theoretical life. Therefore, when the acquired temperature is greater than the preset temperature, the theoretical life of the battery is updated, so that the battery can be accurately obtained. Life in use.

Step 103: Determine whether the updated theoretical lifetime is less than or equal to a preset period. If the updated theoretical lifetime is less than or equal to a preset period, generate a lifetime termination message, and report the end of life termination.

Where i≥i and JU are integers.

In this embodiment, when the updated theoretical lifetime is less than or equal to a preset period, indicating that the life of the battery is terminated, a life termination message is generated, and the end of life message may be reported to the user or the network management, so that the user will be in the The battery end of life message is known before the battery fails completely, and measures can be taken according to the message, for example: replacing the battery, thereby effectively avoiding the loss of the end of life before the complete failure of the battery.

In this embodiment, by obtaining the temperature of the battery in the first preset period, and when the temperature of the battery is greater than the preset temperature, obtaining a temperature corresponding to the temperature of the battery from a preset relationship between the temperature and the modified parameter. Correcting parameters, and subtracting the preset theoretical life from the corrected parameters, as the updated theoretical life, if the updated theoretical lifetime is less than or equal to a preset period, generating and reporting a lifetime termination message, thereby achieving various The type and the life of the battery with different charging methods are tested, and the accuracy of the detection is effectively improved.

2 is a flow chart of another embodiment of a method for detecting battery life according to the present invention. In this embodiment, a technical solution of the present embodiment is described in detail by taking a long-term floating charge of a battery and almost no discharge as an example. As shown, the method of this embodiment includes:

Step 201: Collect the temperature of the battery every predetermined time in the first month.

Step 202: Obtain an average temperature of the battery in the first month, and use an average temperature of the battery as the temperature of the battery.

In this embodiment, after the battery is powered on, the battery power-on working time can be recorded according to the clock, and the temperature of the battery can be collected every predetermined time, and the battery collected in the first month is calculated at the first month. The average temperature is taken as the average temperature, and the average temperature of the battery is taken as the temperature of the battery.

Step 203: Determine whether the average temperature of the battery is greater than a preset temperature. If yes, perform step 204; if less than or equal to, perform step 206.

Step 204: Obtain a correction parameter corresponding to an average temperature of the battery from a relationship table corresponding to the preset temperature and the correction parameter, and subtract the correction parameter from the preset theoretical life as the updated theoretical life.

In this embodiment, the preset theoretical life can be expressed in months. In addition, the correction parameters are related to the type of battery and the temperature at which the battery is operated. Take a lead-acid battery as an example. For example, when the battery is operated at a temperature of 45 degrees, the corresponding correction parameter is 3 Month; When the battery is operated at a temperature of 35 degrees, the corresponding correction parameter is 1 month. For example: If the average temperature of the battery is 45 degrees in the first month, the preset theoretical life is reduced by 3 months, and the theoretical life of 3 months is subtracted as the updated theoretical life.

Step 205: Determine whether the updated theoretical lifetime is less than or equal to months. If it is less than or equal to, perform step 206; if greater, perform step 207.

Step 206: Generate a lifetime termination message, and report the lifetime termination message. End.

Step 207: When the battery is powered on for the next month, 1 is added as the updated one;

Step 208: Determine whether the updated theoretical lifetime is greater than the updated month. If yes, execute step 201; if less than or equal to, perform step 206.

For example, when the battery is powered on, the battery power-on working time can be recorded in a clock manner, and each time The temperature of the battery is collected at predetermined intervals, and at the first month, the average temperature of the collected battery is obtained as the temperature of the battery in the first month. Determining whether the temperature of the battery in the first month is greater than a preset temperature, and if greater than the preset temperature, obtaining a correction parameter corresponding to the temperature of the battery of the first month, and subtracting the preset theoretical life from the correction parameter As the updated theoretical life, it is judged whether the updated theoretical life is less than or equal to 1, and if it is greater than 1, the battery is obtained in the second month when the battery is powered on for the next month, that is, the second month. The temperature is the same as the temperature of the battery in the first month, and will not be described here. Determining whether the temperature of the battery in the second month is greater than a preset temperature. If the temperature is less than or equal to the preset temperature, the battery is powered on for the next month, that is, the third month, and when the updated theoretical life is greater than 3, The above steps are repeated for calculation until the updated theoretical lifetime obtained is greater than the working time of the battery power-on, and a lifetime termination message is generated, and the end of life message is reported.

In this embodiment, by obtaining the temperature of the battery in the first month, and when the temperature of the battery is greater than the preset temperature, obtaining a correction corresponding to the temperature of the battery from the preset relationship between the temperature and the correction parameter. The parameter, and the preset theoretical life minus the correction parameter, as the updated theoretical life, if the updated theoretical life is less than or equal to the month, then generate and report the end of life message, thereby achieving various types and floating The life of the battery as a charging method is detected, and the accuracy of the detection is effectively improved.

3 is a flow chart of still another embodiment of a method for detecting the battery life of the present invention. In this embodiment, the technical solution of the embodiment is described in detail in the example that the battery is in charge and discharge cycle switching, as shown in FIG. The method of this embodiment includes:

Step 301: Obtain the temperature of the battery in the first discharge cycle.

Step 302: Determine whether the temperature of the battery is greater than a preset temperature. If yes, perform step 303; if less than or equal to, perform step 305.

Step 303: Obtain a correction parameter corresponding to the temperature of the battery from a preset temperature and correction parameter correspondence table, and subtract the preset parameter from the preset theoretical life as the updated theoretical life.

Step 304: Determine whether the updated theoretical lifetime is less than or equal to one discharge cycle, and if it is less than or equal to Then, step 305 is performed; if it is greater, step 306 is performed.

Step 305: Generate a lifetime termination message, and report the end of life message;

Step 306: Collect the voltage of the battery and the current of the battery.

Step 307: If the voltage of the battery is equal to the preset voltage, and the current of the battery is greater than the preset current, it is determined that the battery is powered on to the next discharge cycle, and 1 is added as the updated one.

Step 308: Determine whether the updated theoretical lifetime is greater than the updated one of the discharge cycles. If yes, perform step 301; if less than or equal to, perform step 305.

Where i≥l and JU are integers.

For example, a mobile phone battery or a communication backup battery that has been in a high temperature and cyclic discharge environment for a long time is taken as an example. When the battery is powered on, the voltage and current of the battery can be collected in real time, and when the collected voltage changes from near full voltage to near charging voltage (ie, the preset voltage in the real-time example), and the collected current is greater than the preset. When the current is current, it is determined that the battery reaches a discharge cycle after being powered on, that is, the first discharge cycle, and the temperature of the battery in the first discharge cycle is obtained, and the specific implementation manner is as follows: It is determined that the battery has no voltage input. At the time, the temperature of the battery is collected, and the temperature of the collected battery is taken as the battery temperature in the first discharge cycle. Determining whether the temperature is greater than a preset temperature, if greater than the preset temperature, obtaining a correction parameter corresponding to the temperature of the battery of the first discharge cycle, and subtracting the preset theoretical life from the correction parameter as an updated theory Lifetime, determining whether the updated theoretical lifetime is less than or equal to 1, and if greater than 1, the battery is heated to the next discharge cycle, that is, the second discharge cycle, and the temperature of the battery in the second month is obtained, and Determining whether the temperature of the second discharge cycle is greater than a preset temperature. If the temperature is less than or equal to the preset temperature, the battery is powered on to the next discharge cycle, that is, the third discharge cycle, and the updated theoretical life is greater than 3, Repeat the above steps to calculate, and then report the end of life message.

It should be noted that the theoretical lifetime in this embodiment may be the number of discharge cycles.

In this embodiment, by obtaining the temperature of the battery in the first discharge cycle, and when the temperature of the battery is greater than the preset temperature, obtaining the battery from the preset relationship between the temperature and the correction parameter. The temperature corresponding to the correction parameter, and the preset theoretical life minus the correction parameter, as the updated theoretical life, if the updated theoretical life is less than or equal to one discharge cycle, then generate and report a life termination message, thereby achieving Various types and detection of the life of the battery as a charging mode by cyclic switching of charging and discharging are performed, and the accuracy of detection is effectively improved.

4 is a schematic structural diagram of an embodiment of a battery life detecting device according to the present invention. As shown in FIG. 4, the battery life detecting device of the present embodiment includes: a temperature collecting module 11, a temperature determining module 12, and a theoretical life processing module 13 The life judgment module 14 and the report module 15. The temperature collecting module 11 is configured to obtain the temperature of the battery in the first preset period; the temperature determining module 12 is configured to determine whether the temperature of the battery is greater than a preset temperature; the theoretical life processing module 13 is configured to: if the temperature determining module 12 determining that the temperature of the battery is greater than the preset temperature, obtaining a correction parameter corresponding to the temperature of the battery from the preset relationship table between the temperature and the correction parameter, and subtracting the preset theoretical life from the correction parameter as an update. The theoretical life is determined; the life determination module 14 is configured to determine whether the updated theoretical lifetime is less than or equal to a preset period; and the reporting module 15 is configured to: if the life determination module 14 determines that the updated theoretical lifetime is less than or equal to a preset period, A lifetime message is generated and the end of life message is reported. Where ≥1 and is an integer.

The device for detecting the battery life in this embodiment can perform the technical solution of the method embodiment shown in FIG. 1 , and the principle is similar, and details are not described herein again.

Further, FIG. 5 is a schematic structural diagram of another embodiment of a battery life detecting device according to the present invention. On the basis of the embodiment shown in FIG. 4, the device further includes an updating module 16 for the life determining module 14 After determining that the updated theoretical lifetime is greater than, the battery powers up to a preset period When the updated theoretical description is greater than the updated preset period, the trigger temperature collecting module 1 1 obtains the temperature of the battery in the updated first preset period.

6 is a schematic structural view of still another embodiment of the battery life detecting device of the present invention. On the basis of the embodiments shown in FIG. 4 and FIG. 5, the battery is in a long-term floating charge, and almost no discharge is taken as an example. As shown in FIG. 6, the temperature acquisition module 11 includes an acquisition unit 1 1 1 and an average temperature acquisition unit 112. The collecting unit 1 1 1 is configured to collect the temperature of the battery every predetermined time in the first month; the average temperature acquiring unit 12 is configured to obtain the average temperature of the battery in the first month, and the average temperature of the battery is taken as The temperature of the battery.

The device for detecting the battery life in this embodiment can perform the technical solution of the method embodiment shown in FIG. 2, and the principle is similar, and details are not described herein again.

In this embodiment, by obtaining the temperature of the battery in the first preset period, and when the temperature of the battery is greater than the preset temperature, obtaining a temperature corresponding to the temperature of the battery from a preset relationship between the temperature and the modified parameter. Correcting parameters, and subtracting the preset theoretical life from the corrected parameters, as the updated theoretical life, if the updated theoretical lifetime is less than or equal to a preset period, generating and reporting a lifetime termination message, thereby achieving various The type and the life of the battery using the float charging method are detected, and the accuracy of the detection is effectively improved.

FIG. 7 is a schematic structural view of still another embodiment of a battery life detecting apparatus according to the present invention. On the basis of the embodiments shown in FIG. 4 and FIG. 5, the battery is in a cyclical switching of charging and discharging as an example. As shown in FIG. 7, the temperature collecting module 1 is specifically configured to acquire the temperature of the battery when it is detected that the battery has no voltage input in the first discharging cycle.

Further, the device further includes: a voltage collecting module 17, a current collecting module 18, and a discharging cycle judging module 19. The voltage collecting module 17 is configured to collect the voltage of the battery; the current collecting module 18 is configured to collect the current of the battery; and the discharging cycle determining module 19 is configured to: if the voltage of the battery is equal to the preset voltage, and the current of the battery is greater than the preset current, It is determined that the battery is powered on to the next discharge cycle.

The device for detecting the battery life in this embodiment can perform the technical solution of the method embodiment shown in FIG. 3, and the principle is similar, and details are not described herein again. In this embodiment, by obtaining the temperature of the battery in the first discharge cycle, and when the temperature of the battery is greater than the preset temperature, obtaining a temperature corresponding to the temperature of the battery from a preset relationship between the temperature and the correction parameter. Correcting the parameter and subtracting the preset theoretical life from the corrected parameter as the updated theoretical life. If the updated theoretical lifetime is less than or equal to one discharge cycle, the end of life message is generated and reported, thereby implementing various types and The life of the battery as the charging mode is detected by the cycle of charging and discharging, and the accuracy of the detection is effectively improved.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

It should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

Rights request

A method for detecting battery life, characterized in that it comprises:

Obtaining the temperature of the battery in the i th preset period;

Determining whether the temperature of the battery is greater than a preset temperature, and if the temperature of the battery is greater than the preset temperature, obtaining a correction parameter corresponding to the temperature of the battery from a preset relationship between the temperature and the correction parameter And subtracting the corrected theoretical life from the preset theoretical life as the updated theoretical life;

Determining whether the updated theoretical lifetime is less than or equal to a preset period. If the updated theoretical lifetime is less than or equal to a preset period, generating a lifetime termination message and reporting the lifetime termination message; wherein, ≥l, JU is an integer.

2. The method for detecting battery life according to claim 1, further comprising: if the updated theoretical lifetime is greater than i preset periods, then powering up the battery to reach a next preset period When the value is incremented, the above steps are repeated when the updated theoretical lifetime is greater than the updated preset period.

The battery life detecting method according to claim 2, wherein the first preset period is the first month, and the obtaining the temperature of the battery in the first preset period comprises:

Collecting the temperature of the battery every predetermined time during the first month;

The average temperature of the battery in the first month is obtained, and the average temperature of the obtained battery is taken as the temperature of the battery.

The battery life detecting method according to claim 2, wherein the first preset period is the first discharging cycle, and the obtaining the temperature of the battery in the first preset period comprises: During the first discharge cycle, the temperature of the battery is obtained when it is detected that the battery has no voltage input.

The method for detecting battery life according to claim 4, further comprising: collecting a voltage of the battery;

Collecting current of the battery; If the voltage of the battery is equal to the preset voltage, and the current of the battery is greater than the preset current, it is determined that the battery is powered on to the next discharge cycle.

6. A battery life detecting device, comprising:

a temperature collecting module, configured to obtain a temperature of the battery in the first preset period;

a theoretical life processing module, configured to: if the temperature determining module determines that the temperature of the battery is greater than the preset temperature, obtain a temperature corresponding to the temperature of the battery from a preset temperature and correction parameter correspondence table Correcting the parameter and subtracting the preset theoretical life from the corrected parameter as the updated theoretical life;

Where i≥i and JU are integers.

The battery life detecting device according to claim 6, further comprising: an updating module, configured to: if the life determining module determines that the updated theoretical life is greater than i preset periods, When the battery powers up to the next preset period, 1 is added as the update, and when the updated theoretical lifetime is greater than the updated preset period, the temperature acquisition module is triggered to obtain an update. The temperature of the battery during the first preset period.

The battery life detecting device according to claim 7, wherein the first preset period is the first month, and the temperature collecting module comprises:

a collecting unit, configured to collect a temperature of the battery every predetermined time during the first month; an average temperature acquiring unit, configured to acquire an average temperature of the battery in the first month, and acquire the obtained The average temperature of the battery is taken as the temperature of the battery.

The battery life detecting device according to claim 7, wherein the first preset period is a first discharging cycle, and the temperature collecting module is specifically configured to use the first discharging cycle In the loop, when it is detected that the battery has no voltage input, the temperature of the battery is obtained.

The battery life detecting device according to claim 9, further comprising: a voltage collecting module, configured to collect a voltage of the battery;

a current collecting module, configured to collect current of the battery;

The discharge cycle judging module is configured to determine that the battery is powered on to the next discharge cycle if the voltage of the battery is equal to the preset voltage and the current of the battery is greater than the preset current.