CN111796190A - Battery capacity checking method, device and equipment - Google Patents
Battery capacity checking method, device and equipment Download PDFInfo
- Publication number
- CN111796190A CN111796190A CN202010677587.5A CN202010677587A CN111796190A CN 111796190 A CN111796190 A CN 111796190A CN 202010677587 A CN202010677587 A CN 202010677587A CN 111796190 A CN111796190 A CN 111796190A
- Authority
- CN
- China
- Prior art keywords
- battery
- heating
- instruction
- switch
- capacity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
Abstract
The application relates to a battery capacity checking method, device and equipment. The method comprises the following steps: after the battery is detected to be connected with the charger, whether a capacity checking instruction is received or not is judged, after the capacity checking instruction is received, a turn-off instruction is sent to the charging switch, a heating instruction is sent to the heating switch, when the voltage value of the battery is detected to be smaller than a preset lower limit value, a turn-on instruction is sent to the charging switch, a heating stopping instruction is sent to the heating switch, when the voltage value of the battery is detected to be larger than or equal to a preset upper limit value, a turn-off instruction is sent to the charging switch, and the capacity of the battery is checked according to the current electric quantity of the battery. When the battery needs to be checked, the electric quantity of the battery is consumed by the heating device firstly, the heating device can heat the battery after the battery is powered on, the phenomenon that the working performance of the battery is influenced due to the fact that the temperature of the battery is too low is avoided, then the battery is checked according to the accumulated electric quantity of the battery from the beginning of charging to the completion of charging, a complex test system is not needed, the hardware cost is low, and the detection result is accurate.
Description
Technical Field
The present disclosure relates to the field of battery technologies, and in particular, to a method, an apparatus, and a device for battery capacity check.
Background
With the development of scientific technology and the improvement of living standard of people, electric equipment permeates all corners of our lives, the cruising ability of the electric equipment is a main factor influencing the working performance of the device, for example, a user needs to pay attention to the residual electric quantity of a mobile phone frequently and needs to charge the mobile phone in time, and communication interruption caused by the exhaustion of the electric quantity of the mobile phone is avoided, so that the capacity of a battery is a main concern of the user.
The traditional battery capacity measuring method adopts a coulometry method, needs a precise measuring instrument, is complex in operation and calculation processing process, and causes high measurement cost and low measurement efficiency on the battery capacity.
Disclosure of Invention
Therefore, it is necessary to provide a battery capacity checking method, device and apparatus for solving the problems of high cost and low efficiency of the conventional battery capacity measuring method.
A battery capacity checking method comprises the following steps:
after detecting that the battery is connected with the charger, judging whether a capacity checking instruction is received; the charger is connected with the battery through a charging switch;
after the core capacity instruction is received, sending a turn-off instruction to the charging switch, and sending a heating instruction to the heating switch; the turn-off instruction is used for controlling the charging switch to be turned off, the battery is connected with the heating device through the heating switch, the heating instruction is used for controlling the heating switch to be turned on so that the battery supplies power to the heating device, and the heating device heats the battery when being powered on;
when the voltage value of the battery is detected to be smaller than a preset lower limit value, sending a closing instruction to the charging switch, and sending a heating stopping instruction to the heating switch; the closing instruction is used for controlling the charging switch to be closed, and the heating stopping instruction is used for controlling the heating switch to be opened;
and when the voltage value of the battery is detected to be greater than or equal to a preset upper limit value, sending a turn-off instruction to the charging switch, and checking the capacity of the battery according to the current electric quantity of the battery.
A battery containment apparatus comprising:
the battery capacity checking instruction receiving module is used for judging whether a battery capacity checking instruction is received or not after the battery is detected to be connected to the charger; the charger is connected with the battery through a charging switch;
the power consumption module is used for sending a turn-off instruction to the charging switch and sending a heating instruction to the heating switch after receiving the core capacity instruction; the turn-off instruction is used for controlling the charging switch to be turned off, the battery is connected with the heating device through the heating switch, the heating instruction is used for controlling the heating switch to be turned on so that the battery supplies power to the heating device, and the heating device heats the battery when being powered on;
the charging module is used for sending a closing instruction to the charging switch and sending a heating stopping instruction to the heating switch when detecting that the voltage value of the battery is smaller than a preset lower limit value; the closing instruction is used for controlling the charging switch to be closed, and the heating stopping instruction is used for controlling the heating switch to be opened;
and the capacity checking module is used for sending a turn-off instruction to the charging switch when detecting that the voltage value of the battery is greater than or equal to a preset upper limit value, and checking the capacity of the battery according to the current electric quantity of the battery.
The utility model provides a battery nuclear capacity equipment, includes processing apparatus, charger, battery, heating device, charging switch and heating switch, the charger passes through charging switch connects the battery, heating device passes through heating switch connects the battery, the battery charging switch with heating switch all connects processing apparatus.
In one embodiment, the sending a turn-off command to the charging switch and a heating command to the heating switch after receiving the core capacity command includes:
and after receiving the core capacity instruction, sending a turn-off instruction to the charging switch, and sending a heating instruction to the heating switch according to a preset time interval.
In one embodiment, after receiving the capacity checking instruction, sending a turn-off instruction to the charging switch, and sending a heating instruction to the heating switch, and when it is detected that the voltage value of the battery is smaller than a preset lower limit value, sending a close instruction to the charging switch, and sending a heating stop instruction to the heating switch, the method further includes:
acquiring the heating temperature of the battery;
judging whether the heating temperature is smaller than a preset temperature threshold value or not;
if yes, executing the steps of sending a closing instruction to the charging switch and sending a heating stopping instruction to the heating switch when the voltage value of the battery is detected to be smaller than a preset lower limit value; if not, controlling the heating switch to be switched off for a set time, then switching on again, and returning to the step of obtaining the heating temperature of the battery.
In one embodiment, the sending a turn-off command to the charging switch when it is detected that the voltage value of the battery is greater than or equal to a preset upper limit value, and after the capacity of the battery is checked according to the current electric quantity of the battery, further includes:
acquiring a difference value between the current electric quantity of the battery and the rated electric quantity of the battery;
and judging whether the reduction of the capacity of the battery is reversible or not according to the difference value.
In one embodiment, before determining whether the capacity checking instruction is received after detecting that the battery is connected to the charger, the method further includes:
acquiring the residual electric quantity of the current battery;
judging whether the residual electric quantity is smaller than a preset electric quantity threshold value or not; the preset electric quantity threshold value is greater than the preset lower limit value;
if yes, judging whether a capacity checking instruction is received or not after the battery is detected to be connected to the charger; if not, sending a closing instruction to a discharging switch, wherein the closing instruction is used for controlling the discharging switch to be closed, and the battery is connected with a load through the discharging switch.
According to the method, the device and the equipment for checking the capacity of the battery, after the battery is connected to a charger, if a capacity checking instruction is received, the capacity of the battery needs to be checked, a turn-off instruction is sent to a charging switch, the charging switch is turned off, the charging is stopped, a heating instruction is sent to a heating switch, the heating switch is turned on, the heating device begins to consume the electric quantity of the battery, then when the voltage value of the battery is detected to be smaller than a preset lower limit value, a turn-on instruction is sent to the charging switch, the heating stopping instruction is sent to the heating switch, the heating device stops consuming the electric quantity of the battery, when the voltage value of the battery is detected to be larger than or equal to a preset upper limit value, the turn-off instruction is sent to the charging switch, the charging of the. When the battery needs to be checked, the electric quantity of the battery is consumed by the heating device firstly, the heating device can heat the battery after the battery is powered on, the phenomenon that the working performance of the battery is influenced due to the fact that the temperature of the battery is too low is avoided, then the battery is checked according to the accumulated electric quantity of the battery from the beginning of charging to the completion of charging, a complex test system is not needed, the hardware cost is low, and the detection result is accurate.
Drawings
FIG. 1 is a flow chart of a battery capacity verification method in one embodiment;
FIG. 2 is a flow chart of a battery capacity checking method in another embodiment;
FIG. 3 is a flow chart of a battery capacity checking method in yet another embodiment;
FIG. 4 is a block diagram of a battery capacity check apparatus in one embodiment;
fig. 5 is a block diagram of a battery capacity checking apparatus according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described more fully below by way of examples in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In one embodiment, referring to fig. 1, a battery capacity checking method is provided, which may be executed by a processing device, and includes the following steps:
step S200: and after detecting that the battery is connected with the charger, judging whether a capacity checking instruction is received.
Wherein, the charger is connected with the battery through the charging switch. When the charging switch is closed, the charger is connected with the battery, the charger can charge the battery, and when the charging switch is disconnected, the battery stops charging. The charging switch may be a switch independent of the charger and the battery, for example, the charging switch is disposed in the processing device and is an execution end for the processing device to issue a command, and the processing device may directly control the opening and closing of the charging switch. The type of the charging switch is not unique, in this embodiment, the charging switch may be an MOS transistor, the MOS transistor has a high cost performance, and the on state of the MOS transistor can be controlled by adjusting the high and low levels output to the MOS transistor, so that the control is simple and easy to implement. It is understood that in other embodiments, the charging switch may be other types of switches as long as the skilled person realizes.
Taking the example of step S200 executed by the processing device, the processing device first detects the connection state between the charger and the battery, considers that the charger can charge the battery at this time after detecting that the battery is connected to the charger, then detects whether a capacity checking instruction is received, considers that capacity checking needs to be performed on the current battery when receiving the capacity checking instruction, and then executes the subsequent steps. Specifically, the manner of receiving the capacity checking instruction is not unique, and for example, the processing device may analyze past usage data of the battery through big data when detecting that the battery is in a low power state after detecting that the charger is connected to the battery, for example, when the previous capacity checking is performed, whether a recent battery usage time is reduced, and the like, determine whether to start capacity checking on the battery, if necessary, generate a capacity checking instruction, and send a control signal corresponding to the capacity checking to other devices. Or, the processing device may also determine whether a capacity checking instruction input by the user is received, and when the user needs to check the capacity of the battery, the processing device may perform capacity checking according to the user requirement.
In an expandable manner, the structure of the processing device is not unique, and for example, the structure may be an iBMS (integrated battery management System), and the iBMS may perform various monitoring on a circuit where the battery is located, such as monitoring of battery voltage and power, and the like. Or, processing apparatus also can include iBMS and cloud platform server, and iBMS can convey the data that obtain or the data that receive to the cloud platform server, and the cloud platform server can carry out analysis, save etc. to the data that receive, sends corresponding result to iBMS again, and it is fast to calculate as data processing center by the cloud platform, and storage capacity is big, combines iBMS to further improve the accuracy of work efficiency and control as control center. It is to be understood that in other embodiments the processing means may be of other types, as long as the skilled person realizes this.
Step S400: and after receiving the core capacity instruction, sending a turn-off instruction to the charging switch, and sending a heating instruction to the heating switch.
The battery is connected with the heating device through the heating switch, and the heating instruction is used for controlling the heating switch to be closed so that the battery supplies power to the heating device. After receiving the capacity checking instruction, judging that the current battery needs to be checked, sending a turn-off instruction to the charging switch, disconnecting the charging switch after receiving the turn-off instruction, and stopping charging the battery by the charger. Meanwhile (or in a small interval time), the processing device also sends a heating instruction to the heating switch, the heating switch is closed after receiving the heating instruction, the battery can supply power for the heating device, the heating device converts electric energy obtained from the battery into heat energy, the heat energy can be used for improving the temperature of the battery, and when the performance of the battery is reduced due to low external environment, the heating device can increase the temperature of the battery through heating to improve the performance of the battery. Use in this embodiment, heating device not only can consume the electric quantity of battery as required, can also turn into the heat with the electric quantity of consumption in order to improve battery working property, uses reliably. It will be appreciated that in other embodiments, the heating means may be replaced by other devices as long as the power of the battery is consumed without affecting the performance of the circuit. The type of the heating device is not exclusive, and for example, the heating device can be a heating film which has the advantages of light weight, small volume, convenient use and good heating performance.
Step S600: and when the voltage value of the battery is detected to be smaller than the preset lower limit value, sending a closing instruction to the charging switch, and sending a heating stopping instruction to the heating switch.
The closing instruction is used for controlling the charging switch to be closed, and the heating stopping instruction is used for controlling the heating switch to be switched off. After the heating switch is controlled to be closed, the heating device begins to consume the residual electric quantity of the battery, the processing device continuously (or at time intervals and the like) acquires the voltage value of the battery, compares the acquired voltage value with a preset lower limit value, and when the voltage value of the battery is detected to be smaller than the preset lower limit value, the electric quantity of the current battery is considered to be basically consumed and is basically cleared, a closing instruction is sent to the charging switch, the charging switch is closed after receiving the closing instruction, and the charger begins to charge the battery. At the same time (or within a small interval time), the processing device also sends a heating stop instruction to the heating switch, the heating switch is disconnected after receiving the heating stop instruction, the battery stops supplying power to the heating device, and only the charging process is carried out. The value of the preset lower limit value is not unique, as long as the preset lower limit value can indicate that the voltage of the battery is very low and basically cannot be used for normal functions of the load. In this embodiment, the voltage value of the battery may be a single voltage value of the battery, the preset lower limit value may be a minimum working voltage value of the battery core, and the voltage state of the battery may be represented more accurately by comparing the two values.
Step S800: and when the voltage value of the battery is detected to be greater than or equal to the preset upper limit value, sending a turn-off instruction to the charging switch, and checking the capacity of the battery according to the current electric quantity of the battery.
After the charging switch is controlled to be closed, the charger starts to charge the battery, the processing device continuously (or at time intervals and the like) acquires the voltage value of the battery, compares the acquired voltage value with a preset upper limit value, and when the voltage value of the battery is detected to be greater than or equal to the preset upper limit value, the current electric quantity of the battery is considered to be basically full, a turn-off instruction is sent to the charging switch, the charging switch is turned off after receiving the turn-off instruction, and the charger stops charging the battery. The value of the preset upper limit value is not only required to indicate that the battery is basically full of electric quantity. In this embodiment, the voltage value of the battery may be a single voltage value of the battery, the preset upper limit value may be a maximum working voltage value of the battery core, and the voltage and the electric quantity state of the battery can be represented more accurately by comparing the two values.
And when the voltage value of the battery is detected to be larger than or equal to the preset upper limit value, judging that the current electric quantity of the battery is fully charged, and checking the capacity of the battery according to the current electric quantity of the battery. Generally, the battery has a structure for detecting the electric quantity, and the battery is charged until the electric quantity is fully charged after the electric quantity is basically consumed by the heating device, so that the current electric quantity of the battery can basically represent the maximum capacity of the battery, the battery capacity can be accurately obtained according to the current electric quantity of the battery and the nuclear capacity of the battery, a complex test system is not needed, the hardware cost is low, and the detection result is accurate.
In one embodiment, referring to fig. 2, step S400 includes step S410.
Step S410: and after receiving the core capacity instruction, sending a turn-off instruction to the charging switch, and sending a heating instruction to the heating switch according to a preset time interval.
After receiving the capacity checking instruction, judging that the current battery needs to be checked, sending a turn-off instruction to the charging switch, disconnecting the charging switch after receiving the turn-off instruction, and stopping charging the battery by the charger. Meanwhile (or within a small interval time), the processing device also sends a heating instruction to the heating switch, and particularly sends the heating instruction to the heating switch according to a preset time interval, so that the situation that the temperature of the battery or a circuit where the battery is located and surrounding devices rises too fast due to the fact that the heating device is powered on all the time, a protection mechanism of the circuit is triggered, and the performance of the battery can be influenced due to too high temperature is avoided. The value of the preset time interval is not unique, for example, 10 seconds, and the heating device stops generating heat within 10 seconds, so that the temperature can be prevented from rising faster.
Further, on the basis of setting the time interval for sending the heating instruction, the duration for sending the heating instruction can be set to ensure that the speed for consuming the battery power by the heating device is not too slow. The value of the duration is not unique, and generally, the duration is longer than a preset time interval, that is, the working time of the heating device is longer than the rest time, so that the working efficiency is improved. In this embodiment, take duration to be 30 seconds, predetermine time interval and be 10 seconds as an example, heat switch turns on 30 seconds, breaks off for 10 seconds, and the circulation is opened the disconnection operation to heat switch, on being convenient for consume the basis of the few electric quantity in the battery fast, can avoid the battery temperature to rise the too fast protection that leads to. It is understood that in other embodiments, the predetermined time interval and duration may be other values as long as one skilled in the art realizes that this may be achieved.
In one embodiment, referring to fig. 3, after step S400 and before step S600, the battery capacity checking method further includes step S510 and step S520.
Step S510: the heating temperature of the battery is acquired.
The mode of obtaining the heating temperature of the battery is not unique, in the implementation, the heating temperature of the battery can be collected through the thermistor and sent to the processing device, the thermistor is connected with the processing device, the resistance value of the thermistor can be changed according to different heating temperatures of the battery, and the processing device can obtain the heating temperature by analyzing the resistance value of the thermistor. The heating temperature of the battery is detected through the thermistor, the implementation is simple, and the hardware cost is low. It is understood that in other embodiments, other types of devices may be used to detect the temperature of the battery, as deemed practicable by those skilled in the art.
Step S520: and judging whether the heating temperature is less than a preset temperature threshold value or not.
After the heating temperature is obtained, comparing the heating temperature with a preset temperature threshold, and determining whether the heating temperature is smaller than the preset temperature threshold, if so, indicating that the battery temperature is in a normal range, and executing the subsequent step S600. If not, the battery temperature is over high at the moment, and potential safety performance hazards exist, the heating switch is controlled to be switched off for a set time, then the heating switch is switched on again, and the step S510 is returned to. And if the heating temperature of the battery is still greater than or equal to the preset temperature threshold, controlling the heating switch to be closed again after the heating switch is switched off for the set time, and circulating until the heating temperature is less than the preset temperature threshold.
In one embodiment, referring to fig. 3, after step S800, the battery capacity checking method further includes step S910 and step S920.
Step S910: and acquiring the difference value between the current electric quantity of the battery and the rated electric quantity of the battery.
And after the current electric quantity of the battery is obtained, comparing the current electric quantity with the rated electric quantity of the battery to obtain a difference value between the current electric quantity and the rated electric quantity of the battery. The rated electric quantity of the battery is the rated electric quantity of the battery when the battery leaves a factory, generally speaking, as the number of times of use increases, the service life is prolonged, the electric quantity (namely, the total capacity) of the battery is reduced compared with the rated electric quantity when the battery leaves the factory, and the difference value between the current electric quantity of the battery and the rated electric quantity of the battery can represent the performance of the current battery.
Step S920: and judging whether the reduction of the capacity of the battery is reversible or not according to the difference value.
The type of the difference value is not unique, the difference value can be a difference value or a ratio value of the current electric quantity of the battery and the rated electric quantity of the battery, the difference value is taken as the difference value as an example, if the difference value is small, the reduction of the capacity of the battery is reversible, the capacity of the battery can be recovered through balance control, if the difference value is large, the reduction of the capacity of the battery is judged to be irreversible, the battery cell can not recover the capacity of the battery through balance control, the capacity reduction of the battery is permanent, and the battery can be returned to a factory to be utilized in other functions, such as energy storage and the like. Further, a difference value threshold value can be set to compare with the difference value, when the difference value is smaller than or equal to the difference value threshold value, the reduction of the capacity of the battery is judged to be reversible, when the difference value is larger than the difference value threshold value, the reduction of the capacity of the battery is judged to be irreversible, and the value of the difference value threshold value is not unique and can be determined according to an empirical value or an industrial standard. The equalization control is divided into active equalization and passive equalization in an extensible manner. The active equalization is to transfer the capacity of the high-capacity battery cell to the low-capacity battery cell through an external device and a control method, so as to keep the capacities of all the battery cells at the same level, and the passive equalization is to consume the redundant capacity of the high-capacity battery cell through the external device and the control method in a heat manner, so as to finally keep the capacities of all the battery cells at the same level.
In one embodiment, referring to fig. 3, before step S200, the battery capacity checking method further includes step S110 and step S120.
Step S110: and acquiring the residual capacity of the current battery. The remaining capacity of the current battery, which may be expressed in terms of a percentage, may be obtained by the processing device.
Step S120: and judging whether the residual electric quantity is smaller than a preset electric quantity threshold value or not.
And the preset electric quantity threshold value is greater than a preset lower limit value. If the current battery capacity is considered to be low, the step S200 is executed, the battery is checked, if the current battery capacity is not considered to be high, a closing instruction is sent to a discharging switch, the battery is connected with a load or a charger through the discharging switch, and when the battery is connected with the load, the closing instruction is used for controlling the closing of the discharging switch, and the battery can supply power to the load.
For a better understanding of the above embodiments, the following detailed description is given in conjunction with a specific embodiment. In one embodiment, the battery capacity checking method is implemented based on a battery capacity checking device as shown in fig. 4, the battery capacity checking device comprises a processing device, a charger, a battery, a heating device, a charging switch, a discharging switch and a heating switch, the charging switch and the discharging switch are arranged in the processing device, the battery is connected with the heating device through the discharging switch and the charging switch in sequence, the heating device is connected with the battery through the heating switch, the battery, the charging switch, the discharging switch and the heating switch are all connected with the processing device, the heating device can be a heating film, the processing device can be an ibams, or both the ibams and a cloud platform are included, and the ibams and the cloud platform establish communication connection. The battery capacity checking device also comprises a sampling resistor and a thermistor, the thermistor is connected with the processing device, the battery is connected with the charger sequentially through the sampling resistor, the discharging switch and the charging switch, and the charger can be connected with a load at the position in the circuit diagram.
The battery capacity checking method comprises the following steps: when the battery electric quantity is sufficient, the battery is controlled by the iBMS, the discharging switch and the charging switch are turned on (the discharging switch and the charging switch are a pair of MOS (metal oxide semiconductor) tubes in the figure), the load is connected with the P + and the P-end, the current flows to the battery B-from the P + through the charging switch and the discharging switch until the battery is in low electric quantity, the iBMS turns on protection, the discharging control signal is sent, and the discharging switch is turned off to stop supplying power to the load. At the moment, the battery needs to be charged, the charger is connected to the P + and P-positions, the iBMS transmits the currently acquired related information to the cloud platform in a mobile signal (including but not limited to 2G/4G/5G) mode, the cloud platform adopts big data analysis to automatically judge that the current battery needs to be subjected to capacity checking operation, a capacity checking instruction is sent to the iBMS in a mobile signal (including but not limited to 2G/4G/5G) mode, the iBMS receives the instruction, the iBMS starts a capacity checking function, and the battery is checked; besides the automatic judgment of the cloud platform, the battery can also automatically judge and perform related operations.
Specifically, when the battery capacity is sufficient, the battery is controlled by the iBMS, the discharging switch and the charging switch are turned on, the battery supplies power to the load, the current flows into the B-end of the battery from P +, the discharging switch flows into the B-end of the battery, the battery capacity is low, low-power protection is turned on, the iBMS cuts off the discharging switch and the charging switch, the battery cannot supply power to the load, P +, P-are connected with the charger and cut off the load, the charger is communicated with the iBMS, the iBMS detects the connection of the charger, the battery is in a low-power state at present, the connection of the charger is transmitted to the cloud platform, the cloud platform analyzes (or automatically judges the battery through big data) the previous use data of the battery, and judges whether.
The nuclear capacity detection is opened in cloud platform or battery self judgement, then send the instruction for the iBMS through mobile signal (including but not limited to 2G 4G 5G) or local, the iBMS obtains the instruction and carries out the communication with the charger, the inside disconnection charging current output switch of charger this moment, the iBMS opens (closes) discharge switch, the heating switch, the battery supplies power for the heating membrane, the electric current is from P + through the heating switch, the heating membrane, the charging switch, the discharge switch, sampling resistor flow direction B-, produce the heat after the heating membrane supplies power, consume the low-power in the battery. The heating film generates heat and can generate heat in the battery, the iBMS collects the temperature constantly through the thermistor, the discharge switch and the heating switch can be disconnected when the temperature reaches the set highest temperature, and the heating film stops heating at the moment.
In order to facilitate rapid consumption of very small electric quantity in the battery, the on-off time of the heating switch can be controlled, and protection caused by too fast temperature rise of the battery is avoided, for example, the heating switch is turned on for 30 seconds and turned off for 10 seconds (the on-time and the off-time are not only the time, but also other times, which are not set forth herein), and the heating switch is circularly turned on and off until the cell voltage value of the battery reaches the minimum working voltage value of the battery core, the iBMS starts cell voltage protection, and the discharging switch and the heating switch are turned off. The iBMS sends a charging instruction with the charger communication, the charger receives the charging instruction, open the inside charging switch of charger, the electric current flows to B-from P + through the battery, through sampling resistance, the internal body diode of discharge switch, the P-end that the charging switch flows to the charger, the charger charges the battery, until the battery is fully charged, battery monomer voltage reaches the maximum operating voltage value, the iBMS sends out the order of stopping charging with the charger communication, the charger stops charging, until charger and battery disconnection, the iBMS opens the discharge switch, the charging switch, disconnection heating switch.
The charger charges the battery by adopting small current, the iBMS acquires a charging current value at any time through the sampling resistor and uploads all acquired information to the cloud platform, the cloud platform calculates a current integral from a minimum working voltage value of a monomer to a maximum working voltage value of the monomer during protection to obtain the capacity Q1 charged by the battery in the whole full charging process, then Q1 is compared with the capacity Q2 which can be charged by full charging when the corresponding battery is out of the field, if the capacity difference between Q1 and Q2 is little or not, the battery cell performs balance control on battery capacity recovery, the capacity reduction of the battery is judged to be reversible, and the battery can be normally put into use; if the capacity difference between the Q1 and the Q2 is large, and the battery cell is subjected to balance control, so that the battery capacity cannot be recovered, it is determined that the capacity reduction of the battery is permanent, and the battery returns to a factory to perform other functions, such as energy storage (not only energy storage, but also other occasions, which are not described herein).
According to the battery capacity checking method, after a battery is connected to a charger, if a capacity checking instruction is received, the capacity of the battery needs to be checked, a turn-off instruction is sent to a charging switch, the charging switch is turned off, the charging is stopped, a heating instruction is sent to a heating switch, the heating switch is turned on, a heating device begins to consume the electric quantity of the battery, then when the voltage value of the battery is detected to be smaller than a preset lower limit value, a turn-on instruction is sent to the charging switch, the heating instruction is sent to the heating switch, the heating device stops consuming the electric quantity of the battery, when the voltage value of the battery is detected to be larger than or equal to a preset upper limit value, the turn-off instruction is sent to the charging switch, the charging of the battery is completed, and then the. When the battery needs to be checked, the electric quantity of the battery is consumed by the heating device firstly, the heating device can heat the battery after the battery is powered on, the phenomenon that the working performance of the battery is influenced due to the fact that the temperature of the battery is too low is avoided, then the battery is checked according to the accumulated electric quantity of the battery from the beginning of charging to the completion of charging, a complex test system is not needed, the hardware cost is low, and the detection result is accurate.
In an embodiment, please refer to fig. 5, which provides a battery capacity checking device, including a capacity checking instruction receiving module, a power consuming module, a charging module and a capacity checking module, where the capacity checking instruction receiving module is configured to determine whether a capacity checking instruction is received after detecting that a battery is connected to a charger, the charger is connected to the battery through a charging switch, the power consuming module is configured to send a turn-off instruction to the charging switch and send a heating instruction to a heating switch after receiving the capacity checking instruction, the turn-off instruction is used to control the charging switch to be turned off, the battery is connected to the heating device through the heating switch, the heating instruction is used to control the heating switch to be turned on, so that the battery supplies power to the heating device, the heating device heats the battery when power is supplied, the charging module is configured to send a turn-on instruction to the charging switch and send a heating stop instruction to the heating switch when detecting that a voltage value, the closing instruction is used for controlling the charging switch to be closed, the heating stopping instruction is used for controlling the heating switch to be disconnected, and the capacity checking module is used for sending a closing instruction to the charging switch when detecting that the voltage value of the battery is larger than or equal to a preset upper limit value, and checking the capacity of the battery according to the current electric quantity of the battery.
In one embodiment, the battery capacity checking device further includes a temperature detection module, where the temperature detection module is configured to, after the power consumption module receives the capacity checking instruction and sends a turn-off instruction to the charging switch, when the charging module detects that the voltage value of the battery is smaller than the preset lower limit, send a close instruction to the charging switch, and send a heating stop instruction to a position before the heating switch, obtain the heating temperature of the battery, determine whether the heating temperature is smaller than a preset temperature threshold, if so, execute, when the voltage value of the battery is smaller than the preset lower limit, send a close instruction to the charging switch, and send a heating stop instruction to the heating switch, if not, control the heating switch to be turned off for a set time, then turn on again, and return to obtain the heating temperature of the battery.
In one embodiment, the battery capacity checking device further comprises a performance evaluation module, wherein the performance evaluation module is configured to send a turn-off instruction to the charging switch when the capacity checking module detects that the voltage value of the battery is greater than or equal to a preset upper limit value, obtain a difference value between the current electric quantity of the battery and the rated electric quantity of the battery after the battery capacity checking is performed according to the current electric quantity of the battery, and judge whether the reduction of the capacity of the battery is reversible according to the difference value.
In an embodiment, the battery capacity checking device further includes a starting module, where the starting module is configured to, after the capacity checking instruction receiving module detects that the battery is accessed to the charger, determine whether a remaining power of the current battery is received before the capacity checking instruction is received, and determine whether the remaining power is smaller than a preset power threshold, where the preset power threshold is larger than a preset lower limit, if so, execute to determine whether the capacity checking instruction is received after the battery is detected that the battery is accessed to the charger, and if not, send a closing instruction to the charging switch, where the closing instruction is used to control the charging switch to be closed.
According to the battery capacity checking device, after a battery is connected to a charger, if a capacity checking instruction is received, the capacity of the battery needs to be checked, a turn-off instruction is sent to a charging switch, the charging switch is turned off, the charging is stopped, a heating instruction is sent to a heating switch, the heating switch is turned on, the heating device begins to consume the electric quantity of the battery, the heating device can heat the battery after the power is supplied, the problem that the working performance of the battery is influenced due to the fact that the temperature of the battery is too low is avoided, then when the voltage value of the battery is detected to be smaller than a preset lower limit value, the turn-off instruction is sent to the charging switch, the heating stopping instruction is sent to the heating switch, the heating device stops consuming the electric quantity of the battery, when the voltage value of the battery is detected to be larger than or equal to the preset upper limit value, the turn. When the battery needs to be checked, the electric quantity of the battery is consumed by the heating device, then the battery is checked according to the accumulated electric quantity from the beginning of charging to the completion of charging, a complex test system is not needed, the hardware cost is low, and the detection result is accurate.
In one embodiment, a battery capacity checking device is provided and comprises a processing device, a charger, a battery, a heating device, a charging switch and a heating switch, wherein the charger is connected with the battery through the charging switch, the heating device is connected with the battery through the heating switch, the battery, the charging switch and the heating switch are all connected with the processing device, and a specific structure diagram of the capacity checking device can be seen in fig. 4.
In one embodiment, the processing device is a battery management system.
In one embodiment, the processing device further comprises a cloud platform server, and the battery management system and the cloud platform server are in communication connection. Specifically, the communication can be realized through mobile signals (including but not limited to 2G/4G/5G), local area network communication and the like.
In one embodiment, the charge switch is a MOS transistor. Specifically, the control end of the MOS tube is connected with the processing device, and the on-off state of the MOS tube can be switched according to an instruction sent by the processing device. The MOS tube is used as a charging switch, so that the cost performance is high, and the control is simple and easy to realize.
According to the battery capacity checking device, after a battery is connected to a charger, if a capacity checking instruction is received, the capacity of the battery needs to be checked, a turn-off instruction is sent to a charging switch, the charging switch is turned off, the charging is stopped, a heating instruction is sent to a heating switch, the heating switch is turned on, the heating device begins to consume the electric quantity of the battery, the heating device can heat the battery after the power is supplied, the problem that the working performance of the battery is influenced due to the fact that the temperature of the battery is too low is avoided, then when the voltage value of the battery is detected to be smaller than a preset lower limit value, the turn-off instruction is sent to the charging switch, the heating stopping instruction is sent to the heating switch, the heating device stops consuming the electric quantity of the battery, when the voltage value of the battery is detected to be larger than or equal to the preset upper limit value, the turn. When the battery needs to be checked, the electric quantity of the battery is consumed by the heating device, then the battery is checked according to the accumulated electric quantity from the beginning of charging to the completion of charging, a complex test system is not needed, the hardware cost is low, and the detection result is accurate.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A battery capacity checking method is characterized by comprising the following steps:
after detecting that the battery is connected with the charger, judging whether a capacity checking instruction is received; the charger is connected with the battery through a charging switch;
after the core capacity instruction is received, sending a turn-off instruction to the charging switch, and sending a heating instruction to the heating switch; the turn-off instruction is used for controlling the charging switch to be turned off, the battery is connected with the heating device through the heating switch, the heating instruction is used for controlling the heating switch to be turned on so that the battery supplies power to the heating device, and the heating device heats the battery when being powered on;
when the voltage value of the battery is detected to be smaller than a preset lower limit value, sending a closing instruction to the charging switch, and sending a heating stopping instruction to the heating switch; the closing instruction is used for controlling the charging switch to be closed, and the heating stopping instruction is used for controlling the heating switch to be opened;
and when the voltage value of the battery is detected to be greater than or equal to a preset upper limit value, sending a turn-off instruction to the charging switch, and checking the capacity of the battery according to the current electric quantity of the battery.
2. The method of claim 1, wherein the step of sending a turn-off command to the charging switch and a heating command to the heating switch after receiving the capacity checking command comprises:
and after receiving the core capacity instruction, sending a turn-off instruction to the charging switch, and sending a heating instruction to the heating switch according to a preset time interval.
3. The method for battery capacity check according to claim 1, wherein after receiving the capacity check command, sending a turn-off command to the charging switch and a heating command to the heating switch, and when detecting that the voltage value of the battery is smaller than a preset lower limit value, sending a close command to the charging switch and sending a heating stop command to the heating switch, further comprising:
acquiring the heating temperature of the battery;
judging whether the heating temperature is smaller than a preset temperature threshold value or not;
if yes, executing the steps of sending a closing instruction to the charging switch and sending a heating stopping instruction to the heating switch when the voltage value of the battery is detected to be smaller than a preset lower limit value; if not, controlling the heating switch to be switched off for a set time, then switching on again, and returning to the step of obtaining the heating temperature of the battery.
4. The method for battery capacity check according to claim 1, wherein when it is detected that the voltage value of the battery is greater than or equal to a preset upper limit value, a turn-off command is sent to the charging switch, and after the battery is capacity checked according to the current electric quantity of the battery, the method further comprises:
acquiring a difference value between the current electric quantity of the battery and the rated electric quantity of the battery;
and judging whether the reduction of the capacity of the battery is reversible or not according to the difference value.
5. The method of claim 1, wherein after detecting that the battery is connected to the charger, before determining whether the capacity check command is received, the method further comprises:
acquiring the residual electric quantity of the current battery;
judging whether the residual electric quantity is smaller than a preset electric quantity threshold value or not; the preset electric quantity threshold value is greater than the preset lower limit value;
if yes, judging whether a capacity checking instruction is received or not after the battery is detected to be connected to the charger; if not, sending a closing instruction to a discharging switch, wherein the closing instruction is used for controlling the discharging switch to be closed, and the battery is connected with a load through the discharging switch.
6. A battery capacity verification apparatus, comprising:
the battery capacity checking instruction receiving module is used for judging whether a battery capacity checking instruction is received or not after the battery is detected to be connected to the charger; the charger is connected with the battery through a charging switch;
the power consumption module is used for sending a turn-off instruction to the charging switch and sending a heating instruction to the heating switch after receiving the core capacity instruction; the turn-off instruction is used for controlling the charging switch to be turned off, the battery is connected with the heating device through the heating switch, the heating instruction is used for controlling the heating switch to be turned on so that the battery supplies power to the heating device, and the heating device heats the battery when being powered on;
the charging module is used for sending a closing instruction to the charging switch and sending a heating stopping instruction to the heating switch when detecting that the voltage value of the battery is smaller than a preset lower limit value; the closing instruction is used for controlling the charging switch to be closed, and the heating stopping instruction is used for controlling the heating switch to be opened;
and the capacity checking module is used for sending a turn-off instruction to the charging switch when detecting that the voltage value of the battery is greater than or equal to a preset upper limit value, and checking the capacity of the battery according to the current electric quantity of the battery.
7. The battery capacity checking device is characterized by comprising a processing device, a charger, a battery, a heating device, a charging switch and a heating switch, wherein the charger is connected with the battery through the charging switch, the heating device is connected with the battery through the heating switch, and the battery, the charging switch and the heating switch are connected with the processing device.
8. The battery capacity check apparatus of claim 7, wherein the processing device is a battery management system.
9. The battery container apparatus of claim 8, wherein the processing device further comprises a cloud platform server, and the battery management system and the cloud platform server establish a communication connection.
10. The battery nuclear capacity apparatus of claim 7, wherein the charge switch is a MOS transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010677587.5A CN111796190A (en) | 2020-07-13 | 2020-07-13 | Battery capacity checking method, device and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010677587.5A CN111796190A (en) | 2020-07-13 | 2020-07-13 | Battery capacity checking method, device and equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111796190A true CN111796190A (en) | 2020-10-20 |
Family
ID=72807000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010677587.5A Pending CN111796190A (en) | 2020-07-13 | 2020-07-13 | Battery capacity checking method, device and equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111796190A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425168A (en) * | 2016-01-08 | 2016-03-23 | 国网浙江宁波市鄞州区供电公司 | Storage battery capacity detection method and apparatus in power supply system |
| CN107219470A (en) * | 2017-07-24 | 2017-09-29 | 深圳市泰昂能源科技股份有限公司 | The batteries property checked electric discharge device and method online |
| CN108258771A (en) * | 2018-02-09 | 2018-07-06 | 广州泓泉能源科技有限公司 | A kind of online intelligent accummulator core holds straight-flow system |
| CN108808804A (en) * | 2018-07-27 | 2018-11-13 | 广东电网有限责任公司 | A kind of device and control method of the online balanced and core appearance of battery pack |
| CN109884540A (en) * | 2019-03-19 | 2019-06-14 | 浙江绿源电动车有限公司 | A kind of lead-acid battery quantity measuring method |
| CN111123127A (en) * | 2019-12-03 | 2020-05-08 | 浙江捷创智能技术有限公司 | Function fitting and electric quantity prediction method for lithium battery charging electric quantity |
-
2020
- 2020-07-13 CN CN202010677587.5A patent/CN111796190A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425168A (en) * | 2016-01-08 | 2016-03-23 | 国网浙江宁波市鄞州区供电公司 | Storage battery capacity detection method and apparatus in power supply system |
| CN107219470A (en) * | 2017-07-24 | 2017-09-29 | 深圳市泰昂能源科技股份有限公司 | The batteries property checked electric discharge device and method online |
| CN108258771A (en) * | 2018-02-09 | 2018-07-06 | 广州泓泉能源科技有限公司 | A kind of online intelligent accummulator core holds straight-flow system |
| CN108808804A (en) * | 2018-07-27 | 2018-11-13 | 广东电网有限责任公司 | A kind of device and control method of the online balanced and core appearance of battery pack |
| CN109884540A (en) * | 2019-03-19 | 2019-06-14 | 浙江绿源电动车有限公司 | A kind of lead-acid battery quantity measuring method |
| CN111123127A (en) * | 2019-12-03 | 2020-05-08 | 浙江捷创智能技术有限公司 | Function fitting and electric quantity prediction method for lithium battery charging electric quantity |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110138046B (en) | Battery management system, battery management method, power module and unmanned aerial vehicle | |
| KR100987606B1 (en) | Apparatus and method for correcting measurements of remaining capacity of battery pack | |
| US10629932B2 (en) | Method and system for monitoring state of charge (SOC) of flow battery system | |
| US5739667A (en) | Control system for charging batteries and electronic apparatus using same | |
| US5518832A (en) | Apparatus for simulating high battery temperature used in recharging lithium ion cells | |
| KR101377321B1 (en) | Battery pack and portable device selecting battery cells and Method of controlling charging/discharging using the same | |
| JP2014027867A (en) | Control method for battery charge parameter and battery charge system | |
| CN108513616B (en) | Battery leakage current detection method, device and circuit | |
| JP2020512793A (en) | Fast switching backup power supply system using rechargeable electrochemical cells | |
| CN211208607U (en) | Monitoring device for battery management system and battery management system | |
| CN104348215A (en) | Charger, battery module, and systems and methods for identifying and monitoring a battery charger | |
| CN110764014A (en) | Method and device for detecting short circuit in battery, terminal and readable storage medium | |
| CN111257763A (en) | Method and system for calculating remaining capacity of battery | |
| CN112771708A (en) | Deterioration degree of storage element, storage battery power level detection device, and storage element management unit | |
| KR20210004646A (en) | Dignosis apparatus and method of battery cell | |
| JP3405525B2 (en) | Battery pack control device | |
| CN110611353A (en) | Charging control method and device of intelligent door lock and intelligent door lock | |
| WO2021077798A1 (en) | Charging method and charging apparatus | |
| CN110907842B (en) | Intelligent door lock electric quantity detection device and method and intelligent door lock | |
| JP2002075466A (en) | Electric power supply device, cell, electric apparatus, and memory effect detecting method | |
| JP2000092721A (en) | Battery residual capacity detector | |
| CN111796190A (en) | Battery capacity checking method, device and equipment | |
| CN201174607Y (en) | On-line detection and activation apparatus for accumulator | |
| KR102352308B1 (en) | Wake-up apparatus of battery management system | |
| CN115389959A (en) | Battery capacity checking method and device and battery equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201020 |