CN108695913B - A battery management method and device - Google Patents

Abstract

The invention discloses a battery management method and device. Wherein the battery management method comprises: acquiring the working state of the equipment when the battery is charged; when the equipment is in an operating state, acquiring a first electric quantity of the battery; and confirming that the first electric quantity of the battery is higher than a first preset electric quantity, and performing discharge treatment on the battery. The invention can avoid the battery in the environment of high temperature and high electric quantity, prolong the service life of the battery and ensure the safety of the battery.

Description

A battery management method and device

Technical Field

The present invention relates to the field of mobile communication technology, and in particular to a battery management method and device.

Background technique

With the development of technology, more and more high-energy-consuming devices are being used. Due to the high power consumption of such devices, they are usually connected to a charger for a long period of time. However, in order to ensure mobile applications, devices such as micro projectors are equipped with batteries.

When connected to a charger, the high-energy-consuming device itself will generate heat, and the installed battery will also generate heat during the charging process, eventually causing the battery to be in a high-temperature environment when fully charged, affecting the battery's service life. It also poses certain risks to the battery's safety.

Summary of the invention

The embodiments of the present invention provide a battery management method and device to at least solve the problem in the related art that when a high-energy-consuming device carrying a battery is used in a conventional manner in a high-temperature environment, the battery is in a fully charged state, the battery life is extended, and the battery safety is ensured.

According to one embodiment of the present invention, a battery management method is provided, comprising obtaining the working status of a device when the battery is being charged; when confirming that the device is in an operating state, obtaining a first power level of the battery; and discharging the battery when confirming that the first power level of the battery is higher than a first preset power level.

According to one embodiment of the present invention, a battery management device is provided, wherein a power measuring module is configured to obtain the working status of the device when the battery is being charged, and when confirming that the device is in the working status, obtain the first power of the battery and send it to the management module; the management module is configured to confirm that the first power of the battery received from the power measuring module is higher than the first preset power, and discharge the battery.

Through the present invention, the battery of the high-energy-consuming device can be kept in a high-temperature fully-charged state during the charging process, so that the life of the battery is extended and the safety of the battery is guaranteed.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a flow chart of a battery management method according to an embodiment of the present invention.

FIG. 2 is a flow chart of a battery management method according to another embodiment of the present invention.

FIG. 3 is a diagram of a battery management device according to an embodiment of the present invention.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

Based on the inventive concept of the present invention, a battery management method is provided. FIG. 1 is a flow chart of a battery management method according to an embodiment of the present invention. As shown in FIG. 1 , the flow includes the following steps:

S102: Acquire the device working status when the battery is charging;

By obtaining the battery charging status, it is possible to determine whether the device is running while charging the battery. When it is confirmed that the device is charging the battery while running, because the device usually generates more heat when running, and the battery charging will also generate a certain amount of heat at this time, the accumulation of this heat is unfavorable to the safe operation of the battery. Therefore, when this state is monitored, it is necessary to further determine how to adjust the charging method based on the battery condition.

S104: When confirming that the device is in an operating state, obtaining a first power of the battery;

By obtaining the battery's initial charge, we can better judge the battery's current status, and then further determine how to adjust the charging method to better ensure battery safety.

S106: confirming that the first power level of the battery is higher than a first preset power level, and discharging the battery.

When it is confirmed that the battery power has exceeded the preset power, combined with the confirmation that the device is in operation, it can be considered that the battery is currently in a state of high power and in a relatively high temperature environment. If the battery is in a high temperature working environment for a long time with a high power, it will affect the battery life and also pose certain risks to the battery safety. Therefore, the battery is discharged to ensure the safety of the battery.

In a specific implementation, the process of discharging the battery includes:

The battery is discharged according to the preset discharge current value.

The charging capacity of the device charger for the battery is adjusted so that the input current of the battery gradually decreases, the battery is stopped from being charged and the battery starts to be discharged, and the discharge current value of the battery is adjusted to reach a preset discharge current value, and then the battery is discharged according to the discharge current value. The preset discharge current value can be set by the user according to the needs, or it can be directly set by the manufacturer by setting preset parameters in the device.

By setting a preset discharge current value for discharge, the discharge process of the battery can be made more stable and controllable, thereby improving the effect of ensuring battery safety.

In a specific implementation, before discharging the battery according to the preset discharge current value in the method, the method further includes: acquiring a first temperature of the battery; determining a first preset temperature range corresponding to the first temperature of the battery, wherein the first preset temperature range is in a one-to-one correspondence with the preset discharge current value of the battery; accordingly, discharging the battery according to the preset discharge current value corresponding to the first preset temperature range.

By obtaining the first temperature of the battery, the device can control the discharge process according to the temperature, and by using the first preset temperature range, and establishing a one-to-one correspondence between the preset discharge current value and the temperature range, the device can control the discharge process by using the preset discharge current value in the first preset temperature range, so that the discharge process control is more accurate, and the battery temperature is prevented from being too high due to excessive discharge speed, thereby better achieving the effect of protecting the battery.

In a specific implementation, in the method, after obtaining the first temperature of the battery, when the first temperature of the battery is not within a first preset temperature range, discharging the battery is stopped.

When it is detected that the first temperature of the battery is not within the first preset temperature range, it is generally considered that the battery state at this time is no longer suitable for a discharge operation, and thus further charging or discharging of the battery is stopped to ensure the safety of the battery.

In a specific implementation, after the battery is discharged in the method, the method further includes: obtaining a second power level of the battery; when it is confirmed that the second power level of the battery is lower than a second preset power level, stopping the discharge process; wherein the second preset power level is lower than the first preset power level.

When the battery power is obtained to be lower than the preset second power, it can be considered that the battery is in a relatively safe power state and the discharge can be stopped. Setting the second preset power to be lower than the first preset power can prevent the device from repeatedly switching between charging and discharging in a short period of time, thereby better ensuring battery safety.

In a specific implementation, the method further includes: presetting a second temperature range of the battery and a corresponding charging method within the temperature range; detecting the second temperature of the battery at preset time intervals; and adjusting the charging method to a corresponding charging method within the temperature range according to the second temperature of the battery.

Detecting the second temperature of the battery during charging and adjusting the charging method according to the temperature of the battery, such as reducing the charging current of the battery according to the temperature of the battery, can also play an effect of ensuring the safety of the battery.

According to an embodiment of the present invention, a battery management method is provided.

FIG. 2 is a flow chart of a battery management method according to another embodiment of the present invention.

The battery management method comprises:

S201: Obtain the battery power and temperature from the fuel gauge chip.

Obtain the battery power and temperature to facilitate corresponding judgment in subsequent processes.

S202: Detect whether the charger is plugged in. If the charger is not plugged in, no special processing is performed.

When no charger is plugged in, the entire device is in normal operation. Compared with the process of charging and using at the same time, the current flowing through the battery and the temperature of the surrounding environment are lower, so when the charger is not plugged in, it is considered that no special treatment is required.

S203: If a charger is plugged in, perform charging-related processing according to the current temperature.

When the charger is plugged in, the current flowing through the battery increases, and usually the second temperature of the battery will also increase. Therefore, it is necessary to adjust the charging method according to the current temperature. For example, if the second temperature of the battery is less than 0 degrees, it is marked as (-10, 0], charging is prohibited at this temperature, and the battery status is marked as Cold; if it is greater than 0 degrees and less than 10 degrees, it is marked as (0, 10], and the second preset current charging is used at this temperature, and the battery status is marked as Cool; if it is greater than 10 degrees and less than 41 degrees, it is marked as (10, 41], which is the normal first preset current charging, and the battery status is marked as Normal; if it is greater than 41 degrees and less than 43 degrees, it is marked as (41, 43], which is the second preset current charging, and the battery status is marked as Cushion; if it is greater than 43 degrees and less than 45 degrees, it is marked as (43, 45], which is the second preset current charging, and the battery status needs to be reduced. The full charge voltage of the battery is marked as Warm; if it is greater than 45 degrees and less than 55 degrees, it is marked as (45, 55], battery charging is prohibited, and the battery status is marked as Hot. In practice, after the battery is overheated, the user may turn off the projector or turn it on again. The time in between will reduce the temperature of the battery to a temperature range that allows charging, and then resume charging. Here, in order to avoid repeated frequent charging and prohibition of charging, the temperature for resuming charging of the battery is set to a range, which is set to (41, 45] here. In this way, after the battery temperature drops, it does not resume charging immediately, but must be restored to a certain threshold value below 41 degrees before charging.

For example, for a 3990 mAH battery, the first preset current here can be any value in the range of 0.3 C (1197 mA) to 0.5 C (1995 mA), and the second preset current can be 1 C (3990 mA).

By controlling the charging method according to the temperature during charging, the battery can be prevented from overheating and the charging process can be kept in a relatively safe state.

S204: Detect the current power, determine whether the conditions for starting discharge are met, and start discharging.

We set the amount of electricity that can be discharged to 80%. In practice, other amounts of electricity can be set as the amount of electricity that can be discharged. If the amount of electricity that can be discharged is met, it is necessary to further determine whether it is in the temperature range where discharge is possible. For example, when the second temperature of the battery is in the Normal, Cushion, or Warm state, the discharge process needs to be started. Of course, other intervals can also be set to better determine the start of the discharge process based on actual conditions.

In the specific discharge process, first disable the charging function, reduce the charging capacity of the charger, and let the battery start to discharge. It should be noted here that the charging capacity should be reduced within an appropriate range and cannot be set too small or too large. If it is too small, the battery discharge capacity will increase and the temperature will rise too quickly; if it is set too large, the battery discharge capacity will be weak and the discharge time will be too long, which is not conducive to the discharge of the battery and the temperature balance.

S205: After the discharge starts, it is necessary to detect whether the discharge is cut off. For example, the discharge cut-off power is set to 78%. You can also set a different discharge cut-off power according to the actual situation. In other words, the discharge interval is 78% to 80%. The advantage of this is to prevent the battery from being charged and discharged frequently. After the discharge cut-off power is reached, the battery temperature is obtained again, and the state of step 1 is returned to the initial state, and the relevant charge and discharge processing is performed again.

By performing the discharge process, the battery is prevented from being in a high-temperature working environment for a long time when the battery is at high power, thereby increasing the battery life and ensuring the safety of the battery.

Based on the same inventive concept, the present invention further provides another embodiment.

FIG. 3 is a battery management device provided according to an embodiment of the present invention.

In this embodiment, a battery management device is provided, as shown in FIG3 , and the device includes:

The power measuring module 21 obtains the working status of the device when the battery is charging, and when confirming that the device is in the working status, obtains the first power of the battery and sends it to the management module 22; the management module 22 confirms that the first power of the battery received from the power measuring module 21 is higher than the first preset power, and discharges the battery.

The working status of the equipment is confirmed by the power measurement module, and the first power of the battery is obtained to understand the power status of the battery in the equipment operating environment. When the power status is higher than the preset first power, it can be considered that the current battery is in a higher temperature environment with a higher power. Therefore, discharging the battery is to avoid safety hazards of the battery and ensure the safe use of the battery.

In a specific implementation, the management module in the device discharges the battery according to a preset discharge current value.

By setting the discharge capacity of the battery by preset values, the discharge process of the battery can be further controlled to avoid excessive heating of the battery due to rapid discharge, thereby better ensuring the safety of battery use.

In a specific implementation, the device also includes: a temperature measurement module: obtaining the first temperature of the battery at a first preset time interval during the discharge process and sending the first temperature information of the battery to the management module; accordingly, the management module pre-stores a first preset temperature range and a preset adjusted discharge current value corresponding to the first preset temperature range, and adjusts the charging current value input to the battery to the preset discharge current value of the battery output corresponding to the first preset temperature range where the first temperature of the battery is located according to the first temperature of the battery received from the temperature measurement module.

By setting the temperature range to control the discharge current value of the battery, the discharge process of the battery can be controlled more accurately, and a more appropriate discharge current value can be selected according to the current temperature state to achieve better battery protection effect.

In a specific implementation, when discharging, the power measuring module of the device also obtains the second power of the battery at a second preset time interval and sends the power information to the management module; when the management module confirms that the second power of the battery is lower than the second preset power, it stops discharging the battery, wherein the second preset power is lower than the first preset power.

When the second power level of the battery is lower than the second preset power level, it can be considered that the second power level of the current battery has been released to a safer value, so the discharge process is stopped, thereby obtaining a better battery protection effect.

Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, and optionally, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order than here, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (9)

1. A battery management method, comprising: Get the device working status when the battery is charging; When confirming that the device is in an operating state, obtaining a first power of the battery; Confirming that the first power level of the battery is higher than a first preset power level, and discharging the battery; Confirming that a first power level of the battery is lower than a first preset power level, and detecting a second temperature of the battery at a preset time interval; Determine a second preset temperature range corresponding to the second temperature, wherein the second preset temperature range corresponds to a preset charging method; The charging method is adjusted to a corresponding charging method within the second preset temperature range according to the second temperature of the battery; wherein, when the second temperature of the battery recovers to below a preset threshold value, the battery is charged; the preset threshold value is less than a lower limit value of a temperature range for prohibiting battery charging; the temperature range for prohibiting battery charging is greater than 45 degrees Celsius and less than or equal to 55 degrees Celsius, and the preset threshold value is 41 degrees Celsius. 2. The method according to claim 1, wherein the process of discharging the battery comprises: The battery is discharged according to a preset discharge current value. 3. The method according to claim 2, characterized in that before discharging the battery according to the preset discharge current value, it also includes: Acquiring a first temperature of the battery; Determining a first preset temperature range corresponding to the first temperature of the battery, wherein the first preset temperature range is in a one-to-one correspondence with a preset discharge current value of the battery; The battery is discharged according to a preset discharge current value corresponding to the first preset temperature range. 4. The method according to claim 3, further comprising: After the first temperature of the battery is acquired, when the first temperature of the battery is not within a first preset temperature range, discharging the battery is stopped. 5. The method according to claim 1, characterized in that after the battery is discharged, the method further comprises: Acquiring a second power of the battery; When confirming that the second power level of the battery is lower than the second preset power level, stopping the discharge process; Wherein, the second preset power is lower than the first preset power. 6. A battery management device, comprising: The power measurement module is used to obtain the working state of the device when the battery is charged, and when the device is confirmed to be in the working state, obtain the first power of the battery and send it to the management module; Management module: confirming that the first power level of the battery received from the power measurement module is higher than the first preset power level, and performing discharge processing on the battery; A temperature measurement module: confirming that the first power of the battery is lower than the first preset power, and detecting the second temperature of the battery at a preset interval; The management module is also used to: determine a second preset temperature range corresponding to the second temperature, wherein the second preset temperature range corresponds to a preset charging method; adjust the charging method to a charging method corresponding to the second preset temperature range according to the second temperature of the battery; wherein, when the second temperature of the battery recovers to below a preset threshold value, the battery is charged; the preset threshold value is less than a lower limit value of a temperature range for prohibiting battery charging; the temperature range for prohibiting battery charging is greater than 45 degrees Celsius and less than or equal to 55 degrees Celsius, and the preset threshold value is 41 degrees Celsius. 7. The device according to claim 6, wherein the management module performs a discharge process on the battery, comprising: The management module discharges the battery according to a preset discharge current value. 8. The device according to claim 7, further comprising: A temperature measurement module: obtaining a first temperature of the battery at a first preset time interval during the discharge process and sending the first temperature information of the battery to the management module; The management module pre-stores a first preset temperature range and a preset discharge current value corresponding to the first preset temperature range, and adjusts the charging current value input to the battery to a preset discharge current value output by the battery corresponding to the first preset temperature range where the first temperature of the battery is located, according to the first temperature of the battery received from the temperature measurement module. 9. The device according to claim 6, characterized in that the power measuring module also obtains a second power of the battery at a second preset time interval during discharge, and sends the power information to the management module; When the management module confirms that the second power level of the battery is lower than the second preset power level, the management module stops discharging the battery, wherein the second preset power level is lower than the first preset power level.