CN117352879B - Lithium battery capacity-division formation temperature monitoring method and device - Google Patents
Lithium battery capacity-division formation temperature monitoring method and device Download PDFInfo
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 96
- 238000000034 method Methods 0.000 title claims abstract description 86
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- 230000002159 abnormal effect Effects 0.000 claims description 115
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- 235000009120 camo Nutrition 0.000 abstract description 4
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- RVCKCEDKBVEEHL-UHFFFAOYSA-N 2,3,4,5,6-pentachlorobenzyl alcohol Chemical compound OCC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl RVCKCEDKBVEEHL-UHFFFAOYSA-N 0.000 description 7
- 238000004590 computer program Methods 0.000 description 7
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- 238000004519 manufacturing process Methods 0.000 description 6
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- 238000012216 screening Methods 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 2
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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
- H01M10/44—Methods for charging or discharging
- H01M10/446—Initial charging measures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
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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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
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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
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
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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
- H01M10/44—Methods for charging or discharging
- H01M10/443—Methods for charging or discharging in response to temperature
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- 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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Abstract
The application provides a lithium battery capacity-division formation temperature monitoring method and device. The invention relates to a lithium battery capacity-division formation temperature monitoring method, which comprises the following steps: acquiring a temperature acquisition instruction; starting a temperature sensor arranged on each lithium battery cell detection position of the capacity-division formation cabinet, and acquiring a temperature parameter on each lithium battery cell detection position through each temperature sensor; converting the temperature parameter of each lithium battery cell detection position into a detection position temperature signal in real time, wherein the detection position temperature signal comprises the temperature parameter, a position number and a procedure category; and wirelessly transmitting the temperature signal of the detection position to the MCU module of the cabinet body. Because the wireless transmission is used for replacing a cable, the cable of the compact hemp arranged in the capacity-division formation cabinet is avoided, the fault temperature sensor is directly replaced without the need of finding wires to disassemble, and the overhaul and maintenance cost of the fault temperature sensor is greatly reduced.
Description
Technical Field
The invention relates to a lithium battery capacity-division formation temperature monitoring method and device, and belongs to the technical field of lithium battery manufacturing monitoring methods.
Background
In the monitoring and packaging process of the lithium battery, the core process is a formation process and a capacity-dividing process, in the existing manufacturing process, the formation process and the capacity-dividing process can be integrated into the same capacity-dividing formation cabinet (also called as capacity-dividing cabinet) for treatment, in the formation process, packaged lithium battery cells are inserted into the capacity-dividing formation cabinets of the vertical cabinet, and a plurality of capacity-dividing formation cabinets are arranged in each capacity-dividing formation workshop.
The capacity-dividing and forming cabinets integrate a large number of working points in terms of industrial manufacturing requirements, each capacity-dividing and forming cabinet can divide and form tens to hundreds of lithium battery cells simultaneously, temperature monitoring is carried out on each lithium battery cell, so that tens to hundreds of detection points exist, the lithium battery cells are arranged in layers, and a plurality of layers of structures are stacked and arranged to form the capacity-dividing and forming cabinet with high integration level.
Whether the formation process or the capacity-division process is adopted, the lithium battery core can generate a large amount of heat due to charge and discharge in the working process, and the internal temperature of the capacity-division formation cabinet is high due to high integration level of the capacity-division formation workshop, so that the production process of the lithium battery has extremely high requirements on the damp and hot environment, and the excessive environment temperature of the battery can cause the problems of battery loss, hydrogen fluoride gas generation, shell bulging, incomplete formation of SEI film (electronic insulation film) and the like. Therefore, once the control center of the capacity-dividing and forming cabinet monitors that the temperature of the individual detection points is abnormal, workers are required to enter the capacity-dividing and forming workshop for maintenance or replacement.
The existing capacity-dividing cabinet is characterized in that a temperature sensor is arranged on a detection point of the existing capacity-dividing cabinet and is connected with a computer of a control center through a cable, and because the number of lithium cores of the capacity-dividing cabinet is huge, the number of detection points is huge, so that the cable arrangement number of the temperature sensor is huge, a cable system of each capacity-dividing cabinet is huge and complex, even if an overhaul worker knows which detection position is abnormal, the cables at fault positions need to be searched one by one, then the temperature sensor which is likely to be faulty is searched along the cables, and because the work is careful and complex, and the temperature in the capacity-dividing cabinet is high, the overhaul worker needs to wear protective clothing to enter the workshop for operation, and therefore, no matter of workload or work safety consideration, the existing temperature monitoring method needs to be improved.
Disclosure of Invention
In view of the shortcomings of the prior art, the invention aims to provide a lithium battery capacity-division formation temperature monitoring method and device.
According to an embodiment of the present invention, there is provided a first aspect of: the lithium battery capacity-division formation temperature monitoring method comprises the following steps:
acquiring a temperature acquisition instruction;
starting a temperature sensor arranged on each lithium battery cell detection position of the capacity-division formation cabinet, and acquiring a temperature parameter on each lithium battery cell detection position through each temperature sensor;
Converting the temperature parameter of each lithium battery cell detection position into a detection position temperature signal in real time, wherein the detection position temperature signal comprises the temperature parameter, a position number and a procedure category;
and wirelessly transmitting the temperature signal of the detection position to the MCU module of the cabinet body.
Further, the temperature sensor comprises a temperature sensing element, a sensing chip and a signal receiving and transmitting module, wherein the temperature sensing element is used for acquiring the temperature parameter of each electric core detection position in real time, the sensing chip is used for converting the temperature parameter into a detection position temperature signal, and the signal receiving and transmitting module is used for establishing communication connection with the cabinet MCU module and transmitting the detection position temperature signal to the cabinet MCU module.
Further, the temperature acquisition instruction includes: the process category calling instruction comprises: calling a formation charging procedure instruction, calling a formation discharging procedure instruction, calling a primary capacity-dividing procedure instruction and calling a secondary capacity-dividing procedure instruction, wherein the procedure category threshold parameters comprise: a formation charging temperature threshold, a formation discharging temperature threshold, a primary capacity-dividing temperature threshold and a secondary capacity-dividing temperature threshold.
Further, the step of wirelessly transmitting the detected temperature signal to the cabinet MCU module includes:
The signal receiving and transmitting module sends the temperature signal of the detection position to the cabinet MCU module through wireless communication connection, and the wireless communication connection comprises: bluetooth connection, wifi connection, infrared connection, 4G connection, 5G connection.
Further, generating an environmental temperature signal of each detection bit according to the detection bit temperature signal of each detection bit, wherein the environmental temperature signal comprises a position number of each detection bit, a home position temperature parameter and an ortho position temperature parameter, the home position temperature parameter is the temperature parameter of each detection bit, and the ortho position temperature parameter is the temperature parameter of an adjacent detection bit of each detection bit;
monitoring an environmental temperature signal in real time and acquiring auxiliary judgment parameters, wherein the auxiliary judgment parameters are average values of differences between at least one ortho-position temperature parameter and a home-position temperature parameter;
acquiring a high-temperature abnormal signal, wherein the high-temperature abnormal signal is a signal that the temperature parameter of the detection position exceeds the threshold parameter of the working procedure category;
and outputting the high-temperature abnormal signal as a sensor abnormal signal if the auxiliary judgment parameter exceeds the auxiliary judgment threshold value in an auxiliary judgment unit time after the high-temperature abnormal signal acquisition time point, and outputting the high-temperature abnormal signal as a lithium battery cell abnormal signal if the auxiliary judgment parameter does not exceed the auxiliary judgment threshold value.
Further, the adjacent detection position is a position of detecting the adjacent position number of the phase;
or, the adjacent detection positions are the positions of the detection positions numbered according to the upper positions of the structure arrangement of the divided and formed cabinet layers;
or, the adjacent detection bit is a position where the detection bit is numbered according to the downstream adjacent position in the heat radiation direction.
Further, in the auxiliary judgment unit time after the high temperature abnormal signal obtaining time point, if the auxiliary judgment parameter does not exceed the auxiliary judgment threshold, the step of outputting the high temperature abnormal signal as the lithium battery core abnormal signal includes:
acquiring a high-temperature abnormal position number of a detection position of a high-temperature abnormal signal, acquiring a heat radiation direction of the detection position of the high-temperature abnormal signal, acquiring an ambient temperature signal and an auxiliary judgment parameter of an adjacent detection position of the detection position numbered in a downstream adjacent position of the heat radiation direction, adjusting at least the heat radiation direction of the detection position of the abnormal high-temperature abnormal signal if the auxiliary judgment parameter exceeds an auxiliary judgment threshold value, acquiring the ambient temperature signal and the auxiliary judgment parameter of the adjacent detection position numbered in the downstream adjacent position of the adjusted heat radiation direction, and outputting the high-temperature abnormal signal as a lithium battery cell abnormal signal if the auxiliary judgment parameter does not exceed the auxiliary judgment threshold value.
Further, the step of outputting the high temperature abnormality signal as the sensor abnormality signal further includes:
and the temperature sensing element is controlled to be cut off by a selection circuit of a sensing chip of the temperature sensor and is connected with the standby temperature sensing element, whether the high-temperature abnormal signal is recovered to be normal or not is monitored, if the high-temperature abnormal signal is recovered to be normal, the transmission of the temperature signal at the detection position is recovered, the high-temperature abnormal signal is marked as the fault of the temperature sensing element, and if the high-temperature abnormal signal is not recovered to be normal, the high-temperature abnormal signal is output as the fault signal of the sensor chip.
Further, the step of outputting the high temperature abnormality signal as the sensor abnormality signal further includes:
and the temperature sensing element and a selection contact arm of the circuit board are moved to a standby temperature sensing element from the temperature sensing element through a selection control module of a sensing chip of the temperature sensor, whether the high-temperature abnormal signal is recovered to be normal or not is monitored, if the high-temperature abnormal signal is recovered to be normal, the transmission of the temperature signal at the detection position is recovered, the high-temperature abnormal signal is marked as the fault of the temperature sensing element, and if the high-temperature abnormal signal is not recovered to be normal, the high-temperature abnormal signal is output as the fault signal of the sensor chip.
According to the embodiment of the invention, by utilizing the lithium battery capacity-division formation temperature monitoring method in the first scheme provided by the invention, the second scheme is provided as follows:
A lithium battery capacity-division formation temperature monitoring device, comprising:
the starting module is used for acquiring a temperature acquisition instruction;
the acquisition module is used for starting the temperature sensor arranged on each lithium battery cell detection position of the capacity-division formation cabinet, and acquiring the temperature parameter on each lithium battery cell detection position through each temperature sensor;
the conversion module is used for converting the temperature parameter on each lithium battery cell detection position into a detection position temperature signal in real time, wherein the detection position temperature signal comprises a temperature parameter, a position number and a procedure category;
and the generation module is used for wirelessly transmitting the temperature signal of the detection position to the cabinet MCU module.
A computer device comprising a memory and a processor, the memory storing a computer program which, when executed by the processor, causes the processor to perform the steps of:
acquiring a temperature acquisition instruction;
starting a temperature sensor arranged on each lithium battery cell detection position of the capacity-division formation cabinet, and acquiring a temperature parameter on each lithium battery cell detection position through each temperature sensor;
converting the temperature parameter of each lithium battery cell detection position into a detection position temperature signal in real time, wherein the detection position temperature signal comprises the temperature parameter, a position number and a procedure category;
And wirelessly transmitting the temperature signal of the detection position to the MCU module of the cabinet body.
A computer readable storage medium storing a computer program which, when executed by a processor, causes the processor to perform the steps of:
acquiring a temperature acquisition instruction;
starting a temperature sensor arranged on each lithium battery cell detection position of the capacity-division formation cabinet, and acquiring a temperature parameter on each lithium battery cell detection position through each temperature sensor;
converting the temperature parameter of each lithium battery cell detection position into a detection position temperature signal in real time, wherein the detection position temperature signal comprises the temperature parameter, a position number and a procedure category;
and wirelessly transmitting the temperature signal of the detection position to the MCU module of the cabinet body.
Compared with the prior art, the beneficial effect of technical scheme exclusive right that this application provided: through be provided with temperature sensor on every detection position lithium cell of partial volume formation cabinet, with real-time supervision's temperature parameter conversion for detecting position temperature signal, detect position temperature signal and include temperature parameter, position number, process category, consequently, cabinet body MCU module not only has temperature parameter, still includes position number and the process category that temperature parameter conversion obtained, consequently, cabinet body MCU can directly carry out screening judgement to detect position temperature signal, for example whether the temperature exceeds the threshold value, and the threshold value setting of exceeding the threshold value carries out automatic adjustment according to the process category, and the direct of the position that the signal corresponds of exceeding the threshold value is looked for etc.. Because the wireless transmission is used for replacing a cable, the cable of the compact hemp arranged in the capacity-division formation cabinet is avoided, the fault temperature sensor is directly replaced without the need of finding wires to disassemble, and the overhaul and maintenance cost of the fault temperature sensor is greatly reduced.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Wherein:
FIG. 1 is a flow chart of a method for monitoring the formation temperature of a lithium battery in one embodiment;
FIG. 2 is a schematic diagram of a selection circuit for selecting a standby temperature sensing circuit according to one embodiment;
FIG. 3 is a schematic diagram of a wireless temperature monitoring device according to an embodiment;
FIG. 4 is a block diagram of a lithium battery capacity-division formation temperature monitoring device according to an embodiment;
fig. 5 is a block diagram of a computer device in one embodiment.
Detailed Description
In order to better understand the technical solutions in the present application, the following description will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
Example 1
The technical problem that this embodiment solved is that be provided with temperature sensor on the check point of current partial shipment cabinet, temperature sensor passes through the cable to be connected with control center's computer, because the lithium cell quantity of partial shipment cabinet is huge, cause the check point quantity to be huge, therefore temperature sensor's cable arrangement quantity is huge, cause the cable system of every partial shipment cabinet huge complicacy, even the overhaul workman knows which signal of detecting the position is unusual, also need to arrange the cable of finding the fault position one by one, then look for the temperature sensor of possible trouble along the cable, because careful complicacy of work, and the partial shipment becomes the workshop temperature very high, and overhaul the workman needs to dress protective clothing and get into workshop operation, consequently, no matter work load or work safety consideration, current temperature monitoring method is waited to improve.
In order to solve the above technical problems, this embodiment provides a method for monitoring the formation temperature of a lithium battery, as shown in fig. 1, including the following steps:
s101: acquiring a temperature acquisition instruction; the temperature acquisition instruction comprises: the process category calling instruction comprises: calling a formation charging procedure instruction, calling a formation discharging procedure instruction, calling a primary capacity-dividing procedure instruction and calling a secondary capacity-dividing procedure instruction, wherein the procedure category threshold parameters comprise: a formation charging temperature threshold, a formation discharging temperature threshold, a primary capacity-dividing temperature threshold and a secondary capacity-dividing temperature threshold.
S102: starting a temperature sensor arranged on each lithium battery cell detection position of the capacity-division formation cabinet, and acquiring a temperature parameter on each lithium battery cell detection position through each temperature sensor;
specifically, the temperature sensor comprises a temperature sensing element, a sensing chip and a signal receiving and transmitting module, wherein the temperature sensing element is used for acquiring the temperature parameter of each cell detection position in real time, the sensing chip is used for converting the temperature parameter into a detection position temperature signal, and the signal receiving and transmitting module is used for establishing communication connection with the cabinet MCU module and transmitting the detection position temperature signal to the cabinet MCU module.
S103: converting the temperature parameter of each lithium battery cell detection position into a detection position temperature signal in real time, wherein the detection position temperature signal comprises the temperature parameter, a position number and a procedure category;
s104: and wirelessly transmitting the temperature signal of the detection position to the MCU module of the cabinet body.
According to the method in the embodiment, the temperature sensor is arranged on each detection position lithium battery cell of the capacity-division formation cabinet, and the temperature parameter monitored in real time is converted into the detection position temperature signal, wherein the detection position temperature signal comprises the temperature parameter, the position number and the procedure category, so that the cabinet MCU module not only obtains the temperature parameter, but also comprises the position number and the procedure category obtained by converting the temperature parameter, and therefore, the cabinet MCU can directly carry out screening and judgment on the detection position temperature signal, for example, whether the temperature exceeds the threshold value, the threshold value setting of the exceeding threshold value is automatically adjusted according to the procedure category, the direct searching of the position corresponding to the exceeding threshold value signal and the like. Because the wireless transmission is used for replacing a cable, the cable of the compact hemp arranged in the capacity-division formation cabinet is avoided, the fault temperature sensor is directly replaced without the need of finding wires to disassemble, and the overhaul and maintenance cost of the fault temperature sensor is greatly reduced.
Example two
Based on the scheme of the first embodiment, the technical problem to be solved continuously in the embodiment is that the temperature sensor on the detection position is an electronic device manufactured based on the temperature sensing element, the electronic device can only be used for detecting the temperature on the detection position, the temperature parameter is sent to the cabinet MCU module, and the cabinet MCU module is used for analyzing data and obtaining useful conclusions. When the temperature sensing element senses the temperature of the detection position, the temperature sensing element senses an abnormal signal of the temperature rise of the detection position, the temperature rise abnormal signal sensed by the temperature sensing element can be a false alarm signal caused by the temperature rise caused by the quality problem of the lithium battery core in the capacity division process or the formation process, and also can be a false alarm signal caused by the fault of the temperature sensor itself. The existing temperature monitoring method based on the wire rod only acquires the temperature parameter, and cannot effectively analyze the reason of the temperature parameter, so that the technical problem cannot be solved.
In order to solve the above technical problems, this embodiment provides a method for monitoring the formation temperature of lithium batteries, including the following steps: acquiring a temperature acquisition instruction; starting a temperature sensor arranged on each lithium battery cell detection position of the capacity-division formation cabinet, and acquiring a temperature parameter on each lithium battery cell detection position through each temperature sensor; converting the temperature parameter of each lithium battery cell detection position into a detection position temperature signal in real time, wherein the detection position temperature signal comprises the temperature parameter, a position number and a procedure category; and wirelessly transmitting the temperature signal of the detection position to the MCU module of the cabinet body.
Specifically, generating an environmental temperature signal of each detection bit according to the detection bit temperature signal of each detection bit, wherein the environmental temperature signal comprises a position number of each detection bit, a home position temperature parameter and an ortho position temperature parameter, the home position temperature parameter is the temperature parameter of each detection bit, and the ortho position temperature parameter is the temperature parameter of an adjacent detection bit of each detection bit; monitoring an environmental temperature signal in real time and acquiring auxiliary judgment parameters, wherein the auxiliary judgment parameters are average values of differences between at least one ortho-position temperature parameter and a home-position temperature parameter; acquiring a high-temperature abnormal signal, wherein the high-temperature abnormal signal is a signal that the temperature parameter of the detection position exceeds the threshold parameter of the working procedure category; and outputting the high-temperature abnormal signal as a sensor abnormal signal if the auxiliary judgment parameter exceeds the auxiliary judgment threshold value in an auxiliary judgment unit time after the high-temperature abnormal signal acquisition time point, and outputting the high-temperature abnormal signal as a lithium battery cell abnormal signal if the auxiliary judgment parameter does not exceed the auxiliary judgment threshold value.
The method utilizes the prior partial capacity formation cabinet body to densely arrange, the space is relatively regular, the temperature of one detection position is necessarily conducted to the adjacent detection position along with hot air, particularly in a partial space, for example, the temperature of a battery is abnormally increased due to the battery quality problem in a formation discharging process of 2-35 (layer 2, row 2 and 5 detection positions), the temperature of the 2-35 detection positions is increased from 45 degrees to 85 degrees and reaches a high temperature early warning threshold value, a temperature sensor of 2-35 detects the high temperature abnormal signal and sends the temperature parameter to a cabinet MCU module, and the processing mode of the prior temperature monitoring method is as follows: marking the point position of the high temperature abnormal signal, cutting off the manufacturing control circuit of the lithium battery core of which the detection position is formed to discharge, and avoiding the temperature from continuously rising. Because of the hysteresis of signal transmission and analysis feedback, before 2-35 is cut off to manufacture the control circuit, even if the circuit is cut off, the temperature of the lithium battery core of the detection position can still continuously rise to 120 degrees, the high temperature is transmitted to the surrounding detection position through air and the surrounding detection position also detects high temperature abnormal signals, therefore, when the temperature of the capacity-division factory is monitored, the high temperature abnormal signals are usually alarmed to easily generate local multi-point alarm signals, so that the lithium battery core of which point cannot be accurately identified is abnormal, and for safety reasons, the whole capacity-division cabinet is cut off to ensure safety.
According to the scheme, each detection bit sends not only a temperature parameter but also an ambient temperature signal to the MCU module of the cabinet body, wherein the ambient temperature signal not only comprises a home temperature parameter but also comprises an ortho temperature parameter, the ortho temperature parameter can be directly obtained from the ortho position after communication connection is established between the signal receiving and sending module of the detection bit and the signal receiving and sending module of at least one surrounding detection bit, specifically, a time parameter can be increased in the ambient temperature signal, namely the home temperature parameter and the ortho temperature parameter are obtained according to a fixed time interval, the influence relation between the home temperature parameter and the ortho temperature parameter is detected through setting an auxiliary judgment threshold, when the auxiliary judgment parameter exceeds the auxiliary judgment threshold in one auxiliary judgment unit time after the acquisition time point of the high temperature abnormal signal, the high temperature abnormal signal is output as a sensor abnormal signal, and when the auxiliary judgment parameter does not exceed the auxiliary judgment threshold, the temperature of the surrounding detection bit is also increased, the high temperature abnormal signal is output as a lithium battery cell abnormal signal.
The abnormal sensor and the abnormal lithium battery cell can be effectively distinguished through the scheme, the MCU module of the auxiliary cabinet body judges the reason of the high-temperature abnormal signal, and the capacity reduction caused by shutdown maintenance of the capacity-divided cabinet due to the abnormal sensor is avoided.
Furthermore, the adjacent temperature parameter, that is, the position where the adjacent detection position is the position where the adjacent detection position number is detected, can be further precisely defined; or, the adjacent detection positions are the positions of the detection positions numbered according to the upper positions of the structure arrangement of the divided and formed cabinet layers; or, the adjacent detection bit is a position where the detection bit is numbered according to the downstream adjacent position in the heat radiation direction. The adjacent detection bits can be defined according to the ventilation and heat dissipation directions of the separate and combined cabinet, for example, if each layer of the separate and combined cabinet is provided with the ventilation and heat dissipation directions from left to right, the adjacent detection bits are defined as the point positions on the right side of the detection bits. Therefore, if the high temperature of the lithium battery cell at the position is abnormal, the ortho-position temperature parameter is easier to rise, so that the ortho-position temperature parameter is subjected to the upstream environment temperature rise image to rise the temperature in an auxiliary judging unit time, the auxiliary judging parameter falls back into the auxiliary judging threshold value, and the high-temperature abnormal signal sent by the lithium battery cell corresponding to the temperature parameter at the position is calibrated to be the lithium battery cell abnormal signal more accurately.
Furthermore, the lithium battery cell abnormal signal can be verified by actively controlling the heat dissipation direction, so that the high-temperature abnormal signal sent by the lithium battery cell corresponding to the local temperature parameter is calibrated to be the lithium battery cell abnormal signal very accurately. That is, the high temperature anomaly position number of the detection bit of the high temperature anomaly signal is acquired, the heat radiation direction of the detection bit of the high temperature anomaly signal is acquired, the ambient temperature signal and the auxiliary judgment parameter of the adjacent detection bit of the downstream adjacent position number of the detection bit according to the heat radiation direction are acquired, if the auxiliary judgment parameter exceeds the auxiliary judgment threshold, at least the heat radiation direction of the detection bit of the anomaly high temperature anomaly signal is adjusted, the ambient temperature signal and the auxiliary judgment parameter of the adjacent detection bit of the downstream adjacent position number of the adjusted heat radiation direction are acquired, and if the auxiliary judgment parameter does not exceed the auxiliary judgment threshold, the high temperature anomaly signal is output as the lithium battery cell anomaly signal.
Example III
When the high-temperature abnormality signal is output as a sensor abnormality signal, device abnormality corresponding to the sensor abnormality signal generally includes: the prior art comprises detaching a temperature sensor, detecting and judging which kind of faults are specific in a laboratory, and correspondingly maintaining, wherein the temperature sensor cannot be judged and maintained on a detection position under the condition that the temperature sensor is not detached.
When the predictive failure is a temperature sensing element failure, attempting to correct the temperature sensor by switching the temperature sensing element is as follows:
the embodiment provides a preferable scheme, as shown in fig. 2, the selection circuit of the sensing chip of the temperature sensor is used for controlling the cut-off temperature sensing element and connecting with the standby temperature sensing element, monitoring whether the high temperature abnormal signal is recovered to be normal, if so, recovering the transmission of the temperature signal of the detection position and marking the high temperature abnormal signal as the temperature sensing element fault, and if not, outputting the high temperature abnormal signal as the sensor chip fault signal. Wherein R1 and R2 are load resistors of the selection circuit, and R3 is a parallel load resistor of the sensing chip.
Further, the temperature sensing element and the selection contact arm of the circuit board are moved to the standby temperature sensing element from the temperature sensing element through the selection control module of the sensing chip of the temperature sensor, whether the high-temperature abnormal signal is recovered to be normal or not is monitored, if the high-temperature abnormal signal is recovered to be normal, the transmission of the temperature signal at the detection position is recovered, the high-temperature abnormal signal is marked as the fault of the temperature sensing element, and if the high-temperature abnormal signal is not recovered to be normal, the high-temperature abnormal signal is output as the fault signal of the sensor chip.
In a preferred embodiment, as shown in fig. 3, a temperature measuring element 111 and a standby temperature measuring element 112 are fixed on the temperature guiding surface of the temperature sensing housing 13, a first connecting piece 121 is vertically fixed on the temperature measuring element 111, a first clamping joint is arranged at the end part of the first connecting piece 121, a second connecting piece 122 is vertically fixed on the standby temperature measuring element 112, and a second clamping joint 132 is arranged at the end part of the second connecting piece 122;
the bluetooth antenna is eccentrically arranged on the PCBA board 21 so that the mounting shell 23 can rotate along a circular track when rotating along with the rotating disc 41 in a stepping way, the first clamping connector and the second clamping connector 132 are arranged on the rotating track so that when the rotating disc 41 is positioned at a first rotating position, the signal receiving and transmitting module 22 of the control assembly is in contact connection with the first clamping connector of the first connecting piece 121 through the antenna contact 221, and the sensing chip is connected with the temperature measuring element 111; after the rotating disc 41 continues to rotate for a step distance, when the rotating disc 41 is located at the second rotating position, the signal transceiver module 22 of the control assembly is in contact connection with the second clamping connector 132 of the second connecting piece 122 through the antenna contact 221, and the sensing chip is connected with the standby temperature measuring element 112;
the temperature sensing shell 13 can rotate around the mounting shell 23, a first spring 14 is arranged between the temperature sensing shell 13 and the mounting shell 23/rotating disc 41, and the temperature sensing assembly is clamped on the mounting shell 23/rotating disc 41 by the first spring 14.
Through the above scheme, the rotating disc 41 can be rotated to drive the Bluetooth antenna to eccentrically rotate, so that the antenna contact 221 at the end part of the Bluetooth antenna is separated from the first clamping connector and is connected with the second clamping connector 132, therefore, when the temperature measuring element 111 fails, the temperature measuring element 111 is abandoned by controlling the rotation of the rotating disc 41, and the standby temperature measuring element 112 is used for temperature measurement, so that the service life of the temperature detecting device is at least doubled.
Further, a control mechanism such as a stepping motor may be provided at the rotary disk 41, and the switching from the temperature measuring element 111 to the backup temperature measuring element 112 may be controlled by the control mechanism, so that the temperature sensing element 11 inside the temperature detecting device may be automatically switched.
After the temperature sensing element is removed from faults, the maintenance of the temperature sensor can be continuously tried in a mode of manually replacing the battery body.
Example IV
The present embodiment provides a device capable of quickly mounting a temperature sensor and quickly mounting and dismounting a battery body, as shown in fig. 3, the mounting housing 23 includes a main housing, a switching assembly, and a displacement member 244; the switching assembly comprises a second spring 241, a spring seat 242 and a rotating member 243; the main housing is a cylindrical housing, the second spring 241, the spring seat 242 and the rotating member 243 are all sleeved outside the main housing and can move up and down along the main housing, and the rotating member 243 can rotate around the main housing; the second spring 241 is fixedly connected with the spring seat 242, one end of the spring seat 242 of the second spring 241 is a movable end, the other end of the second spring 241 is a fixed end, and the bottom of the rotating member 243 is adapted to the spring seat 242 and can rotate around the spring seat 242; the rotating member 243 includes a wave-shaped sliding surface, the moving member includes at least one tooth member adapted to a valley surface of the wave-shaped sliding surface, a displacement limiting member 311 for limiting the up-down displacement of the displacement member 244 is disposed on the outer side of the main housing, and an offset limiting member 312 for limiting the rotation of the rotating member 243 by a stepping distance is disposed on the outer side of the main housing; the displacement member 244 is driven by an external force to displace along the up-down movement direction defined by the displacement limiting member 311, the rotation member 243, the spring seat 242 and the second spring 241 are extruded towards the fixed end, the rotation member 243 rotates for a step distance in the direction defined by the displacement limiting member 312 and enables the rotation member 243 to move from the first matching position to the second matching position, the displacement member 244 is driven by the next external force to displace along the up-down movement direction defined by the displacement limiting member 311, the rotation member 243, the spring seat 242 and the second spring 241 are extruded towards the fixed end, the rotation member 243 rotates for a step distance in the direction defined by the displacement limiting member 312 and enables the rotation member 243 to move from the second matching position to the third matching position, the step number of the cyclic switching is 2-8, and when the step number of the cyclic switching is 2, the third matching position is the first matching position.
When the rotating piece 243 is located at the first matching position, the locking member of the rotating piece 243 fixes the main housing on the locking member of the outer bracket under the spring pressure of the second spring 241; when the rotating member 243 is located at the second matching position, the engaging member of the rotating member 243 is suspended and the main housing can be separated from the outer bracket.
Further, a rebound device may be further provided at the first prying point or the second prying point, and when the first prying point of the rotating member 243 is separated, the rebound device pushes the first prying point in the same direction as the installation direction of the battery body 31 and the PCBA board 21, and changes the acting force direction of the rebound device through the fulcrum to weaken the connection relationship between the battery body 31 and the PCBA board 21 or directly pull the battery body 31 out of the PCBA board 21, or pushes the second prying point in the opposite direction to the installation direction of the battery body 31 and the PCBA board 21, and the acting force direction of the rebound device weakens the connection relationship between the battery body 31 and the PCBA board 21 or directly pulls the battery body 31 out of the PCBA board 21. The force of the rebound device is smaller than the force of the rotating member 243 at the first engaging position, which is generated by the first prying point, so that the force of the rebound device is pressed when the rotating member 243 is at the first engaging position, and the force of the rebound device is out of balance when the rotating member 243 is at the second engaging position, and the battery body 31 is pulled out through the prying plate structure.
Example five
As shown in fig. 4, this embodiment provides a lithium battery capacity-division formation temperature monitoring device, including:
a starting module 100, configured to obtain a temperature acquisition instruction;
the acquisition module 200 is used for starting temperature sensors arranged on each lithium battery cell detection position of the capacity-division formation cabinet, and acquiring temperature parameters on each lithium battery cell detection position through each temperature sensor;
the conversion module 300 is configured to convert the temperature parameter on each lithium battery cell detection position into a detection position temperature signal in real time, where the detection position temperature signal includes a temperature parameter, a position number, and a procedure category;
the generating module 400 is configured to wirelessly send the detected temperature signal to the cabinet MCU module.
The technical problem solved by the temperature monitoring method is that the temperature sensors are arranged on the detection points of the existing capacity-dividing and forming cabinets and are connected with the computer of the control center through cables, and the quantity of the detection points is huge due to the huge quantity of lithium cores of the capacity-dividing and forming cabinets, so that the cable system of each capacity-dividing and forming cabinet is huge and complex due to the huge quantity of the cable arrangement of the temperature sensors, even if a overhauling worker knows which detection position is abnormal in signals, the cables at the fault positions need to be searched one by one, then the temperature sensors which possibly fail are searched along the cables.
The technical effect of this embodiment is that, through being provided with temperature sensor on every detection position lithium cell of the formation cabinet of the partial volume, change the temperature parameter of real-time supervision into detection position temperature signal, detection position temperature signal includes temperature parameter, position number, process category, consequently, cabinet body MCU module obtains not only temperature parameter, still includes position number and the process category that temperature parameter converted obtained, consequently, cabinet body MCU can directly carry out screening judgement to detection position temperature signal, for example whether the temperature exceeds the threshold value, the threshold value setting of exceeding the threshold value carries out automatic adjustment according to the process category, the direct search of the position that the signal corresponds of exceeding the threshold value etc.. Because the wireless transmission is used for replacing a cable, the cable of the compact hemp arranged in the capacity-division formation cabinet is avoided, the fault temperature sensor is directly replaced without the need of finding wires to disassemble, and the overhaul and maintenance cost of the fault temperature sensor is greatly reduced.
Example six
FIG. 5 illustrates an internal block diagram of a computer device in one embodiment. The computer device may specifically be a terminal or a server. As shown in fig. 5, the computer device includes a processor, a memory, and a network interface connected by a system bus. The memory includes a nonvolatile storage medium and an internal memory. The non-volatile storage medium of the computer device stores an operating system, and may also store a computer program that, when executed by the processor, causes the processor to implement a lithium battery capacity-division formation temperature monitoring method. The internal memory may also store a computer program that, when executed by the processor, causes the processor to perform the lithium battery capacity-division formation temperature monitoring method. It will be appreciated by those skilled in the art that the structure shown in fig. 5 is merely a block diagram of some of the structures associated with the present application and is not limiting of the computer device to which the present application may be applied, and that a particular computer device may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is presented comprising a memory and a processor, the memory storing a computer program that, when executed by the processor, causes the processor to perform the steps of:
acquiring a temperature acquisition instruction;
starting a temperature sensor arranged on each lithium battery cell detection position of the capacity-division formation cabinet, and acquiring a temperature parameter on each lithium battery cell detection position through each temperature sensor;
converting the temperature parameter of each lithium battery cell detection position into a detection position temperature signal in real time, wherein the detection position temperature signal comprises the temperature parameter, a position number and a procedure category;
and wirelessly transmitting the temperature signal of the detection position to the MCU module of the cabinet body.
In one embodiment, a computer-readable storage medium is provided, storing a computer program which, when executed by a processor, causes the processor to perform the steps of:
acquiring a temperature acquisition instruction;
starting a temperature sensor arranged on each lithium battery cell detection position of the capacity-division formation cabinet, and acquiring a temperature parameter on each lithium battery cell detection position through each temperature sensor;
converting the temperature parameter of each lithium battery cell detection position into a detection position temperature signal in real time, wherein the detection position temperature signal comprises the temperature parameter, a position number and a procedure category;
And wirelessly transmitting the temperature signal of the detection position to the MCU module of the cabinet body.
Those skilled in the art will appreciate that all or part of the processes in the methods of the above embodiments may be implemented by a computer program for instructing relevant hardware, where the program may be stored in a non-volatile computer readable storage medium, and where the program, when executed, may include processes in the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the various embodiments provided herein may include non-volatile and/or volatile memory. The nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), memory bus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), among others.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (7)
1. The lithium battery capacity-division formation temperature monitoring method is characterized by comprising the following steps of:
acquiring a temperature acquisition instruction;
starting a temperature sensor arranged on each lithium battery cell detection position of the capacity-division formation cabinet, and acquiring a temperature parameter on each lithium battery cell detection position through each temperature sensor;
converting the temperature parameter of each lithium battery cell detection position into a detection position temperature signal in real time, wherein the detection position temperature signal comprises the temperature parameter, a position number and a procedure category;
Wirelessly transmitting the temperature signal of the detection position to the MCU module of the cabinet body;
generating an environment temperature signal of each detection position according to the detection position temperature signal of each detection position, wherein the environment temperature signal comprises a position number of each detection position, a home position temperature parameter and an ortho position temperature parameter, the home position temperature parameter is the temperature parameter of each detection position, and the ortho position temperature parameter is the temperature parameter of an adjacent detection position of each detection position; monitoring an environmental temperature signal in real time and acquiring auxiliary judgment parameters, wherein the auxiliary judgment parameters are average values of differences between at least one ortho-position temperature parameter and a home-position temperature parameter; acquiring a high-temperature abnormal signal, wherein the high-temperature abnormal signal is a signal that the temperature parameter of the detection position exceeds the threshold parameter of the working procedure category; outputting the high-temperature abnormal signal as a sensor abnormal signal if the auxiliary judgment parameter exceeds an auxiliary judgment threshold value in an auxiliary judgment unit time after the high-temperature abnormal signal acquisition time point, and outputting the high-temperature abnormal signal as a lithium battery cell abnormal signal if the auxiliary judgment parameter does not exceed the auxiliary judgment threshold value;
the adjacent detection position is a position for detecting the adjacent position number of the phase; or, the adjacent detection positions are the positions of the detection positions numbered according to the upper positions of the structure arrangement of the divided and formed cabinet layers; or, the adjacent detection bit is a position of the detection bit numbered according to the downstream adjacent position in the heat radiation direction;
In the auxiliary judgment unit time after the high-temperature abnormal signal acquisition time point, if the auxiliary judgment parameter does not exceed the auxiliary judgment threshold, outputting the high-temperature abnormal signal as the lithium battery cell abnormal signal, wherein the step of outputting the high-temperature abnormal signal as the lithium battery cell abnormal signal comprises the following steps of: acquiring a high-temperature abnormal position number of a detection position of a high-temperature abnormal signal, acquiring a heat radiation direction of the detection position of the high-temperature abnormal signal, acquiring an ambient temperature signal and an auxiliary judgment parameter of an adjacent detection position of the detection position numbered in a downstream adjacent position of the heat radiation direction, adjusting at least the heat radiation direction of the detection position of the abnormal high-temperature abnormal signal if the auxiliary judgment parameter does not exceed an auxiliary judgment threshold value, acquiring an ambient temperature signal and an auxiliary judgment parameter of an adjacent detection position numbered in the downstream adjacent position of the adjusted heat radiation direction, and outputting the high-temperature abnormal signal as a lithium battery cell abnormal signal if the auxiliary judgment parameter does not exceed the auxiliary judgment threshold value.
2. The method for monitoring the capacity-division formation temperature of the lithium battery according to claim 1, wherein the temperature sensor comprises a temperature sensing element, a sensing chip and a signal receiving and transmitting module, the temperature sensing element is used for acquiring the temperature parameter of each cell detection position in real time, the sensing chip is used for converting the temperature parameter into a detection position temperature signal, and the signal receiving and transmitting module is used for establishing communication connection with the cabinet MCU module and transmitting the detection position temperature signal to the cabinet MCU module.
3. The lithium battery capacity formation temperature monitoring method according to claim 2, wherein the temperature acquisition instruction includes: the process category calling instruction comprises: calling a formation charging procedure instruction, calling a formation discharging procedure instruction, calling a primary capacity-dividing procedure instruction and calling a secondary capacity-dividing procedure instruction, wherein the procedure category threshold parameters comprise: a formation charging temperature threshold, a formation discharging temperature threshold, a primary capacity-dividing temperature threshold and a secondary capacity-dividing temperature threshold.
4. The method for monitoring the formation temperature of the lithium battery according to claim 2, wherein the step of wirelessly transmitting the detection position temperature signal to the cabinet MCU module comprises:
the signal receiving and transmitting module sends the temperature signal of the detection position to the cabinet MCU module through wireless communication connection, and the wireless communication connection comprises: bluetooth connection, wifi connection, infrared connection, 4G connection, 5G connection.
5. The lithium battery capacity-division formation temperature monitoring method according to claim 1, wherein the step of outputting the high-temperature abnormality signal as a sensor abnormality signal further comprises:
And the temperature sensing element is controlled to be cut off by a selection circuit of a sensing chip of the temperature sensor and is connected with the standby temperature sensing element, whether the high-temperature abnormal signal is recovered to be normal or not is monitored, if the high-temperature abnormal signal is recovered to be normal, the transmission of the temperature signal at the detection position is recovered, the high-temperature abnormal signal is marked as the fault of the temperature sensing element, and if the high-temperature abnormal signal is not recovered to be normal, the high-temperature abnormal signal is output as the fault signal of the sensor chip.
6. The lithium battery capacity-division formation temperature monitoring method according to claim 1, wherein the step of outputting the high-temperature abnormality signal as a sensor abnormality signal further comprises:
and the temperature sensing element and a selection contact arm of the circuit board are moved to a standby temperature sensing element from the temperature sensing element through a selection control module of a sensing chip of the temperature sensor, whether the high-temperature abnormal signal is recovered to be normal or not is monitored, if the high-temperature abnormal signal is recovered to be normal, the transmission of the temperature signal at the detection position is recovered, the high-temperature abnormal signal is marked as the fault of the temperature sensing element, and if the high-temperature abnormal signal is not recovered to be normal, the high-temperature abnormal signal is output as the fault signal of the sensor chip.
7. The utility model provides a lithium cell partial volume formation temperature monitoring device which characterized in that includes:
the starting module is used for acquiring a temperature acquisition instruction;
The acquisition module is used for starting the temperature sensor arranged on each lithium battery cell detection position of the capacity-division formation cabinet, and acquiring the temperature parameter on each lithium battery cell detection position through each temperature sensor;
the conversion module is used for converting the temperature parameter on each lithium battery cell detection position into a detection position temperature signal in real time, wherein the detection position temperature signal comprises a temperature parameter, a position number and a procedure category;
the generating module is used for wirelessly transmitting the temperature signal of the detection position to the cabinet MCU module;
generating an environment temperature signal of each detection position according to the detection position temperature signal of each detection position, wherein the environment temperature signal comprises a position number of each detection position, a home position temperature parameter and an ortho position temperature parameter, the home position temperature parameter is the temperature parameter of each detection position, and the ortho position temperature parameter is the temperature parameter of an adjacent detection position of each detection position; monitoring an environmental temperature signal in real time and acquiring auxiliary judgment parameters, wherein the auxiliary judgment parameters are average values of differences between at least one ortho-position temperature parameter and a home-position temperature parameter; acquiring a high-temperature abnormal signal, wherein the high-temperature abnormal signal is a signal that the temperature parameter of the detection position exceeds the threshold parameter of the working procedure category; outputting the high-temperature abnormal signal as a sensor abnormal signal if the auxiliary judgment parameter exceeds an auxiliary judgment threshold value in an auxiliary judgment unit time after the high-temperature abnormal signal acquisition time point, and outputting the high-temperature abnormal signal as a lithium battery cell abnormal signal if the auxiliary judgment parameter does not exceed the auxiliary judgment threshold value;
The adjacent detection position is a position for detecting the adjacent position number of the phase; or, the adjacent detection positions are the positions of the detection positions numbered according to the upper positions of the structure arrangement of the divided and formed cabinet layers; or, the adjacent detection bit is a position of the detection bit numbered according to the downstream adjacent position in the heat radiation direction;
in the auxiliary judgment unit time after the high-temperature abnormal signal acquisition time point, if the auxiliary judgment parameter does not exceed the auxiliary judgment threshold, outputting the high-temperature abnormal signal as the lithium battery cell abnormal signal, wherein the step of outputting the high-temperature abnormal signal as the lithium battery cell abnormal signal comprises the following steps of: acquiring a high-temperature abnormal position number of a detection position of a high-temperature abnormal signal, acquiring a heat radiation direction of the detection position of the high-temperature abnormal signal, acquiring an ambient temperature signal and an auxiliary judgment parameter of an adjacent detection position of the detection position numbered in a downstream adjacent position of the heat radiation direction, adjusting at least the heat radiation direction of the detection position of the abnormal high-temperature abnormal signal if the auxiliary judgment parameter does not exceed an auxiliary judgment threshold value, acquiring an ambient temperature signal and an auxiliary judgment parameter of an adjacent detection position numbered in the downstream adjacent position of the adjusted heat radiation direction, and outputting the high-temperature abnormal signal as a lithium battery cell abnormal signal if the auxiliary judgment parameter does not exceed the auxiliary judgment threshold value.
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