CN113067043A - Remote awakening method suitable for low-temperature dormancy of battery - Google Patents
Remote awakening method suitable for low-temperature dormancy of battery Download PDFInfo
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- CN113067043A CN113067043A CN202110287004.2A CN202110287004A CN113067043A CN 113067043 A CN113067043 A CN 113067043A CN 202110287004 A CN202110287004 A CN 202110287004A CN 113067043 A CN113067043 A CN 113067043A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000005059 dormancy Effects 0.000 title claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 43
- 238000012360 testing method Methods 0.000 claims description 13
- 230000009466 transformation Effects 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000011084 recovery Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000007958 sleep Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/635—Control systems based on ambient temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
- H01M10/6571—Resistive heaters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Automation & Control Theory (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
Abstract
The invention provides a remote awakening method suitable for a high-capacity battery in low-temperature dormancy, which aims at the problem that the available capacity of the high-capacity battery is greatly reduced at low temperature, provides a battery temperature recovery method based on remote control and external self-heating.
Description
Technical Field
The invention relates to the technical field of battery control management strategies, in particular to a remote awakening method for a battery in low-temperature dormancy.
Background
The battery often enters a dormant state at low temperature, so that partial capacity can not be released, the performance of the battery can not be fully exerted, and an effective external heating and activating means is needed. At present, in the prior art, the secondary battery can utilize the internal impedance of the battery to increase the temperature through a charging or discharging mode, and can also realize rapid heating and temperature recovery through an external heating sheet mode. However, the heating scheme for the low-temperature dormancy problem of other batteries such as primary batteries is not mature, and the existing solutions are limited to lithium ion batteries and have poor applicability to other types of batteries. Meanwhile, compared with a secondary battery, a primary battery does not have the capability of heating by using internal impedance, cannot be charged and has a limited heating mode. And for some cases of being installed in non-detachable equipment, the use requirement of the equipment in a low-temperature environment is difficult to meet by replacing batteries.
Disclosure of Invention
In view of the above, the present invention provides a remote wake-up method for a battery in a low-temperature sleep state, which aims to solve the above technical problems in the prior art. The method provided by the invention specifically comprises the following steps:
s1, performing battery characteristic tests on the large-capacity battery and the battery pack at different temperatures in advance to obtain data such as current, voltage and capacity;
s2, determining a working temperature interval of the large-capacity battery based on the test data acquired in the step S1;
s3, arranging a control circuit board consisting of a signal receiver, an MCU, a voltage transformation module and a heating loop outside the high-capacity battery, and arranging a temperature sensor; the heating loop consists of a heating sheet, a switch assembly and a high-capacity battery; the signal receiver is used for communicating with the remote controller, transmitting high-capacity battery working temperature data in real time and waiting for receiving an external remote wake-up signal; after receiving the remote wake-up signal, the signal receiver performs step S4; the control circuit board is driven by a small-capacity battery, and the working state of the control circuit board is low-current continuous discharge;
s4, the remote controller judges whether the temperature interval is lower than the minimum value of the temperature interval or not based on the temperature interval established in the step S2 and the measured working temperature of the high-capacity battery; if yes, go on to the next step S5; otherwise, executing step S6;
s5, controlling a switch assembly by the MCU and the voltage transformation module, so that a power supply loop of the large-capacity battery is disconnected, a heating loop is closed for self-heating, and the heating duration is set; repeatedly executing the judgment process in the step S4, if the temperature of the large-capacity battery is lower than or in the working temperature interval, continuously heating, otherwise executing S6;
and S6, if the temperature of the large-capacity battery exceeds the working temperature interval, the MCU and the voltage transformation module control switch assembly disconnect the heating loop and close the power supply loop, heating is stopped, and the heating stopping time length is set, so that remote awakening of the large-capacity battery is completed.
Further, the battery characteristic test described in step S1 is a battery constant temperature standard current constant current discharge test of a given temperature interval and step size.
Further, the operating temperature range described in step S2 is a temperature range in which the actual discharge capacity reaches the rated capacity.
The control circuit board is driven by a small-capacity battery,
furthermore, the switch assembly is specifically composed of a plurality of relay switches which are matched with each other; the heating plate is made of a wide-line metal film.
Compared with the prior art, the method provided by the invention at least has the following beneficial effects:
1) the method can realize self-heating awakening of the high-capacity battery under the low-temperature condition only by adding a heating part electric loop and a corresponding control part on the basis of the original circuit without redesigning a battery management system, and is simple, convenient and feasible to modify;
2) the method wakes up the battery by using a remote method, does not need workers to control the battery on site and wait for the heating process of the battery, improves the usability of equipment equipped with the battery, and is beneficial to monitoring and managing the energy of massive batteries and vehicles by utilizing big data.
Drawings
FIG. 1 is a flow chart of a method provided by the present invention;
fig. 2 shows a battery remote wake-up circuit structure used in the method of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a remote awakening method for a battery in low-temperature dormancy, which specifically comprises the following steps as shown in figure 1:
s1, performing battery characteristic tests on the large-capacity battery and the battery pack at different temperatures in advance to obtain data such as current, voltage and capacity;
s2, determining a working temperature interval of the large-capacity battery based on the test data acquired in the step S1;
s3, arranging a control circuit board consisting of a signal receiver, an MCU, a voltage transformation module and a heating loop outside the high-capacity battery, and arranging a temperature sensor; the heating loop consists of a heating sheet, a switch assembly and a high-capacity battery; the signal receiver is used for communicating with the remote controller, transmitting high-capacity battery working temperature data in real time and waiting for receiving an external remote wake-up signal; after receiving the remote wake-up signal, the signal receiver performs step S4;
s4, the remote controller judges whether the temperature interval is lower than the minimum value of the temperature interval or not based on the temperature interval established in the step S2 and the measured working temperature of the high-capacity battery; if yes, go on to the next step S5; otherwise, executing step S6;
s5, controlling a switch assembly by the MCU and the voltage transformation module, so that a power supply loop of the large-capacity battery is disconnected, a heating loop is closed for self-heating, and the heating duration is set; repeatedly executing the judgment process in the step S4, if the temperature of the large-capacity battery is lower than or in the working temperature interval, continuously heating, otherwise, continuously executing the step S6;
and S6, if the temperature of the large-capacity battery exceeds the working temperature interval, the MCU and the voltage transformation module control switch assembly disconnect the heating loop and close the power supply loop, heating is stopped, and the heating stopping time length is set, so that remote awakening of the large-capacity battery is completed.
In a preferred embodiment of the present invention, step S1 is to perform a discharge test on a large-capacity battery in different temperature states in a laboratory, and record voltage and current data. Specifically, a constant-temperature constant-current discharge test of the battery is carried out in a laboratory thermostat at the temperature of-40 ℃ to 50 ℃ and the step length of 10 ℃, voltage and current data are collected, the discharge amount is calculated, and therefore the actual capacity of the battery at the temperature is calculated. In discharge tests at different temperatures, parameters such as the temperature and the discharge rate of the battery need to be kept consistent. The battery capacity is defined by the following formula:
where i is the battery current (positive for discharge), C is the battery capacity, η is the coulombic efficiency, and t is time, where η is 1 in this embodiment.
In step S2, a temperature range in which the actual discharge capacity reaches the rated capacity is selected as a suitable operating temperature range of the large-capacity battery according to data obtained in the discharge experiment at different temperatures.
In step S3, the signal receiver is connected to the control unit powered by the smaller capacity battery and the heating loop, and the transmitter is controlled by the remote controller, and both communicate with each other through the rf signal having the same frequency. The sending end is provided with a remote control button, when the button is pressed down, a control signal is sent to the receiving end, after the receiving end receives the control signal, the indicator light is turned on, and the microcontroller starts to work.
In step S4, the STM32 microcontroller is used to acquire the resistance signal of the PT100 thermal resistor, convert the resistance signal into the actual temperature of the battery, and determine whether the resistance signal is lower than the lowest value of the temperature range in step S2.
In step S5, the controller instructs the relay to switch the wide wire metal film into the circuit to start generating resistance heat, using the relay set as a switching element of the electric heating coil circuit.
In step S6, the MCU determines whether the battery operating temperature is higher than the maximum value of the temperature range obtained in step S2.
It should be understood that, the sequence numbers of the steps in the embodiments of the present invention do not mean the execution sequence, and the execution sequence of each process should be determined by the function and the inherent logic of the process, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A remote awakening method suitable for a battery in low-temperature dormancy is characterized in that: the method specifically comprises the following steps:
s1, performing battery characteristic tests on the large-capacity battery and the battery pack at different temperatures in advance to obtain data such as current, voltage and capacity;
s2, determining a working temperature interval of the large-capacity battery based on the test data acquired in the step S1;
s3, arranging a control circuit board consisting of a signal receiver, an MCU, a voltage transformation module and a heating loop outside the high-capacity battery, and arranging a temperature sensor; the heating loop consists of a heating sheet, a switch assembly and a high-capacity battery; the signal receiver is used for communicating with the remote controller, transmitting high-capacity battery working temperature data in real time and waiting for receiving an external remote wake-up signal; after receiving the remote wake-up signal, the signal receiver performs step S4; the control circuit board is driven by a small-capacity battery;
s4, the remote controller judges whether the temperature interval is lower than the minimum value of the temperature interval or not based on the temperature interval established in the step S2 and the measured working temperature of the high-capacity battery; if yes, go on to the next step S5; otherwise, executing step S6;
s5, controlling a switch assembly by the MCU and the voltage transformation module, so that a power supply loop of the large-capacity battery is disconnected, a heating loop is closed for self-heating, and the heating duration is set; repeatedly executing the judgment process in the step S4, if the temperature of the large-capacity battery is lower than or in the working temperature interval, continuously heating, otherwise executing S6;
and S6, if the temperature of the large-capacity battery exceeds the working temperature interval, the MCU and the voltage transformation module control switch assembly disconnect the heating loop and close the power supply loop, heating is stopped, and the heating stopping time length is set, so that remote awakening of the large-capacity battery is completed.
2. The method of claim 1, wherein: the battery characteristic test in the step S1 is a battery constant-temperature standard current constant-current discharge test with a given temperature interval and step length.
3. The method of claim 1, wherein: the operating temperature range described in step S2 is a temperature range in which the actual discharge capacity reaches the rated capacity.
4. The method of claim 1, wherein: the switch assembly is composed of a plurality of relay switches which are matched with each other; the heating plate is made of a wide-line metal film.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110287004.2A CN113067043A (en) | 2021-03-17 | 2021-03-17 | Remote awakening method suitable for low-temperature dormancy of battery |
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| CN202110287004.2A CN113067043A (en) | 2021-03-17 | 2021-03-17 | Remote awakening method suitable for low-temperature dormancy of battery |
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|---|---|---|---|---|
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2021
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