CN213878185U - Battery module temperature abnormity early warning device - Google Patents
Battery module temperature abnormity early warning device Download PDFInfo
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- CN213878185U CN213878185U CN202022602397.5U CN202022602397U CN213878185U CN 213878185 U CN213878185 U CN 213878185U CN 202022602397 U CN202022602397 U CN 202022602397U CN 213878185 U CN213878185 U CN 213878185U
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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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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The utility model relates to a battery module temperature abnormity early warning device, which comprises a temperature difference sensing part, a temperature acquisition part, a fault analysis decision part, a control part and an early warning part, wherein the temperature difference sensing part is arranged between two adjacent single batteries in the battery module and is used for detecting the temperature difference between the two adjacent single batteries and outputting a temperature difference signal to the fault analysis decision part; the temperature acquisition component is used for acquiring the temperature of the single battery and outputting a temperature signal to the fault analysis decision-making component; the fault analysis decision-making component is used for receiving the temperature difference signal and the temperature signal and outputting a decision-making signal to the control component; the control part is used for receiving the decision signal and outputting a response signal to the early warning part; the early warning component is used for receiving the response signal and making a visual and/or audible early warning prompt. The utility model discloses an unusual early warning device of battery module temperature provides good hardware basis for the latent thermal runaway situation of early monitoring.
Description
Technical Field
The application relates to the technical field of batteries, in particular to a battery module temperature abnormity early warning device.
Background
With the common gradual decrease of fossil resources, new energy automobiles are emerging all over the world at present, no matter hybrid electric vehicles or pure electric vehicles, power batteries are core components of the new energy automobiles, and lithium ion secondary batteries are applied to the new energy automobiles on a large scale. Lithium ion batteries are used in electric vehicles in the form of battery modules or battery packs. A battery module or battery comprises a plurality of single batteries which are connected in series or in parallel. As a power part of an electric automobile, a battery module or a battery pack contains huge energy, and once abnormal use occurs, thermal runaway of the battery module or the battery pack is possibly caused, so that personal safety of drivers and passengers is threatened.
The personal and property safety of personnel should be ensured to the utmost extent in the whole life cycle application process of the electric automobile and the power battery. The ultimate goal in electric vehicle battery applications is that the battery pack does not catch fire under any circumstances. Therefore, the early monitoring and early warning are carried out on the battery faults, and the failure of the battery module or the battery pack caused by the sudden failure of the single battery is prevented, so that the safety use of the electric automobile is very important. The main parameters for monitoring and early warning the thermal runaway of the lithium ion battery in the prior art are temperature, temperature rise rate, gas flow rate, gas pressure, flue gas components, flame and the like. Most of the parameters are signals released after the battery is in thermal runaway, belong to detection and early warning after the thermal runaway, and cannot detect and early warn battery faults in early stage.
SUMMERY OF THE UTILITY MODEL
Accordingly, there is a need for a battery module temperature abnormality warning device to solve the above problems.
The utility model discloses a battery module temperature abnormity early warning device, including temperature difference sensing part, temperature acquisition part, failure analysis decision part, control unit and early warning part, temperature difference sensing part, temperature acquisition part all with failure analysis decision part communication connection, failure analysis decision part, early warning part all with control unit communication connection; the temperature difference sensing component is arranged between two adjacent single batteries in the battery module and used for detecting the temperature difference between the two adjacent single batteries and outputting a temperature difference signal to the fault analysis decision-making component; the temperature acquisition component is used for acquiring the temperature of the single battery and outputting a temperature signal to the fault analysis decision-making component; the fault analysis decision-making component is used for receiving the temperature difference signal and the temperature signal and outputting a decision-making signal to the control component; the control component is used for receiving the decision signal and outputting a response signal to the early warning component; the early warning component is used for receiving the response signal and making a visual and/or audible early warning prompt.
In one embodiment, the temperature difference sensing part is a semiconductor component and is clamped between two adjacent single batteries in a sheet shape, and when a temperature difference exists between the two adjacent single batteries, the temperature difference sensing part can generate a voltage signal, and the temperature difference signal is the voltage signal.
In one embodiment, the temperature difference sensing part is a pi-type semiconductor assembly, the temperature difference sensing part comprises an insulating substrate layer, a bus bar layer and an insulating cover layer along the thickness direction, the bus bar layer is clamped between the insulating substrate layer and the insulating cover layer, the bus bar layer comprises more than two P-type semiconductors and more than two N-type semiconductors, the P-type semiconductors and the N-type semiconductors are alternately arranged at intervals, one end of each P-type semiconductor is connected with one end of one adjacent N-type semiconductor through a lead, and the other end of each P-type semiconductor is connected with the other end of the other adjacent N-type semiconductor through a lead.
In one embodiment, the P-type semiconductor and the N-type semiconductor both have a first end and a second end which are oppositely arranged, the first end of the P-type semiconductor and the first end of the N-type semiconductor are located at the same end, the second end of the P-type semiconductor and the second end of the N-type semiconductor are located at the same end, the first end of the P-type semiconductor is connected with the first end of one adjacent N-type semiconductor through a conducting wire, and the second end of the P-type semiconductor is connected with the second end of the other adjacent N-type semiconductor through a conducting wire.
In one embodiment, the temperature difference sensing part is a single-leg semiconductor assembly, the temperature difference sensing part comprises a first part and a second part which can be folded in half along a center line, the first part and the second part are identical in structure and are connected through a conducting wire, the first part and the second part respectively comprise an insulating substrate layer, a wiring layer and an insulating cover layer, and the wiring layer is clamped between the insulating substrate layer and the insulating cover layer; the bus bar layer comprises more than two P-type semiconductors or more than two N-type semiconductors, and two adjacent P-type semiconductors are connected through a lead, or two adjacent N-type semiconductors are connected through a lead.
In one embodiment, the temperature acquisition component is a temperature sensor and is arranged on a top cover of the single battery or a bus bar of the battery module.
In one embodiment, the early warning device for battery module temperature abnormality further comprises a signal transmission component, and the transmission of the temperature difference signal, the temperature signal, the decision signal and the response signal is realized through the signal transmission component; the signal transmission component is a wired transmission component or a wireless transmission component.
In one embodiment, the signal transmission component is a wired transmission component, and the wired transmission component comprises a signal line and a CAN communication conducting line; the CAN communication conducting wire extends along the arrangement direction of the temperature difference sensing component and is connected between the fault analysis decision component and the control component and between the control component and the early warning component; the temperature acquisition component is connected with the CAN communication transmission line, and the temperature difference induction component is connected with the CAN communication transmission line.
In one embodiment, the signal transmission component is a wireless transmission component, the wireless transmission component comprises a signal transmitter and a signal receiver, and the temperature difference signal, the temperature signal, the decision signal and the response signal are transmitted through the wireless transmission component.
In one embodiment, the early warning prompt is at least one of a flashing indicator light, a text alarm prompt on a display screen, a buzzer of an alarm, and a voice alarm prompt.
The utility model discloses an unusual early warning device of battery module temperature, its beneficial effect is:
the utility model discloses an unusual early warning device of battery module temperature, through the reasonable difference in temperature response part that sets up, the temperature acquisition part, failure analysis decision-making part, the control unit and early warning part set up position and each part relation of connection each other, temperature difference and every battery cell's between two adjacent battery cells of real-time supervision temperature, synthesize the difference in temperature signal, whether few battery cell breaks down is judged in advance to two signals of temperature signal, and convey this result to user interaction interface and send vision and/or sense of hearing alarm, thereby provide good hardware basis for the latent thermal runaway situation of early monitoring, the suggestion driver and crew takes subsequent processing measure, provide sufficient safe evacuation time for driver and crew.
Drawings
Fig. 1 is a schematic view of a connection relationship between each component in a battery module temperature abnormality warning device according to an embodiment of the present invention.
Fig. 2 is a schematic view of an individual structure of the battery module temperature abnormality warning device according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of the battery module after the temperature anomaly early warning device is combined with the single battery according to an embodiment of the present invention.
Fig. 4 is a longitudinal cross-sectional view of the temperature difference sensing member along the thickness direction in the battery module temperature abnormality warning apparatus according to an embodiment of the present invention.
Fig. 5 is a schematic structural view of the temperature difference sensing member wound in the length direction before being cut according to an embodiment of the present invention.
Fig. 6 is a schematic structural view of a cable layer of the temperature difference sensing component disposed on an insulating substrate layer according to an embodiment of the present invention.
Fig. 7 is a schematic structural view of a cable layer of a temperature difference sensing component disposed on an insulating substrate layer according to another embodiment of the present invention.
Fig. 8 is a schematic view of a working flow of the battery module temperature abnormality warning device according to an embodiment of the present invention.
Reference numerals:
the temperature difference detection device comprises a single battery 10, a temperature difference sensing component 100, an insulating substrate layer 110, a flat cable layer 120, a P-type semiconductor 121, a first end 122 of the P-type semiconductor, a second end 123 of the P-type semiconductor, an N-type semiconductor 124, a first end 125 of the N-type semiconductor, a second end 126 of the N-type semiconductor, a conducting wire 127, an insulating cover layer 130, a first surface 140, a second surface 150, a central line 160, a first portion 170, a second portion 180, a temperature acquisition component 200, a fault analysis decision-making component 300, a control component 400 and an early warning component 500; signal line 610, CAN communication conductor 620.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
In one embodiment, as shown in fig. 1, the battery module temperature abnormality early warning device includes a temperature difference sensing component 100, a temperature acquisition component 200, a fault analysis decision component 300, a control component 400 and an early warning component 500, wherein the battery module includes a plurality of single batteries connected in series and/or in parallel, the temperature difference sensing component 100 is disposed between two adjacent single batteries, and is configured to detect a temperature difference between the two adjacent single batteries and output a temperature difference signal; the temperature acquisition part 200 is used for acquiring the temperature of each single battery and outputting a temperature signal; the temperature difference sensing component 100, the temperature acquisition component 200 and the fault analysis decision component 300 are in signal transmission in a wired or wireless mode, and the fault analysis decision component 300 is used for receiving the temperature difference signal and the temperature signal, making a decision according to the temperature difference signal and the temperature signal and outputting a decision signal; the fault analysis decision unit 300 and the early warning unit 500 are in signal transmission with the control unit 400 in a wired or wireless manner, and the control unit 400 is configured to receive the decision signal, output a response signal according to the decision signal, and control the early warning unit 500 to make an early warning prompt through the response signal. The alerting component 500 is configured to receive the response signal and to make a visual and/or audible alert based on the response signal.
In one embodiment, a structure of the battery module temperature abnormality warning device alone is shown in fig. 2, and a structure of the battery module temperature abnormality warning device combined with the unit batteries is shown in fig. 3. The temperature difference sensing member 100 is clamped between two adjacent single batteries 10 in a sheet shape, and when a temperature difference exists between two adjacent single batteries 10, the temperature difference sensing member 100 can generate a voltage signal, and the temperature difference signal is the voltage signal. The temperature acquisition component 200 is a temperature sensor, and specifically can be a thermal resistor or a thermocouple, and is disposed on a top cover of the battery cell 10 or a bus bar of the battery module, as shown in fig. 2 and 3, in the battery module, each battery cell 10 is provided with one temperature acquisition component 200, so that the temperatures of all the battery cells 10 in the battery module can be acquired in real time.
In addition, as shown in fig. 2 and 3, the plurality of temperature difference sensing parts 100 are arranged in parallel and spaced in a sheet shape along the X direction, the single temperature difference sensing part 100 is parallel to the YOZ plane of the coordinate system, one temperature collecting part 200 is disposed on each single battery 10, and one temperature difference sensing part 100 is disposed between each two adjacent single batteries 10. The battery module temperature abnormality early warning device further includes a signal transmission component, in one embodiment, the signal transmission component is a wired transmission component, and specifically includes a signal line 610 and a CAN communication conducting line 620, as shown in fig. 2 and 3, the CAN communication conducting line 620 extends in the X direction and connects the fault analysis decision component 300 and the control component 400, and the control component 400 and the early warning component 500. The temperature acquisition component 200 is connected to the CAN communication conduction line 620 extending in the X direction through the signal line 610, so that the temperature signal of the battery cell acquired by the temperature acquisition component 200 CAN be transmitted to the fault analysis decision component 300 through the signal line 610 and the CAN communication conduction line 620 extending in the X direction in sequence.
As shown in fig. 2 and 3, the thickness of the temperature difference sensing member 100 is distributed along the X direction, each temperature difference sensing member 100 has a first surface 140 and a second surface 150 which are oppositely arranged, the first surface 140 and the second surface 150 are parallel to the YOZ plane of the coordinate system, the first surface 140 is in contact with one of the two adjacent single batteries 10, the second surface 150 is in contact with the other of the two adjacent single batteries 10, and when there is a temperature difference between the two adjacent single batteries 10, the first surface 140 and the second surface 150 of the temperature difference sensing member 100 have a temperature difference, so as to generate a voltage signal, which is a temperature difference signal. Each temperature difference sensing part 100 is connected with the CAN communication conducting wire 620 extending along the X direction through two signal wires 610 located at different positions, so that the temperature difference signals between every two adjacent single batteries 10 CAN be transmitted to the fault analysis decision part 300 through the signal wires 610 and the CAN communication conducting wire 620 extending along the X direction in sequence.
After receiving the temperature difference signal and the temperature signal, the fault analysis decision unit 300 makes a decision and outputs a decision signal, the decision signal is transmitted to the control unit 400 through the CAN communication conducting wire 620, the control unit 400 outputs a response signal according to the decision signal, the response signal is transmitted to the early warning unit 500 through the CAN communication conducting wire 620, and the early warning unit 500 makes a visual and/or audible early warning prompt according to the response signal. In a specific embodiment, the control component 400 is a vehicle control system, and the early warning prompt may be at least one of a flashing indicator light, a text alarm prompt on a display screen, a buzzer of an alarm, and/or a voice alarm prompt.
In another embodiment, the signal transmission component is a wireless transmission component, the wireless transmission component includes a signal transmitter and a signal receiver, the signal transmission is performed between the temperature acquisition component 200 and the fault analysis decision component 300, between the temperature difference sensing component 100 and the fault analysis decision component 300, between the fault analysis decision component 300 and the control component 400, and between the control component 400 and the early warning component 500 in a wireless manner, and the temperature difference signal, the temperature signal, the decision signal, and the response signal are transmitted through the wireless transmission component.
In one embodiment, the temperature difference sensing part 100 is structured as shown in fig. 4 to 6, the temperature difference sensing part 100 has a sandwich structure, and includes an insulating substrate layer 110, a cable layer 120 and an insulating cover layer 130, wherein the cable layer 120 is sandwiched between the insulating substrate layer 110 and the insulating cover layer 130. Fig. 4 is a longitudinal sectional view of the temperature difference sensing member 100 along the thickness direction, fig. 5 is a schematic structural view of the temperature difference sensing member 100 wound along the length direction before being cut, and fig. 6 is a schematic structural view of the flat cable layer 120 of the temperature difference sensing member 100 disposed on the insulating substrate layer 110. It should be noted that in fig. 5 and 6, the insulating cover layer 130 above the flat cable layer 120 is hidden in order to more clearly show the flat cable structure of the flat cable layer 120.
In the embodiment shown in fig. 4 to 6, the temperature difference sensing member 100 is a pi-type semiconductor assembly, the bus layer 120 includes more than two P-type semiconductors 121 and more than two N-type semiconductors 124, the P-type semiconductors 121 and the N-type semiconductors 124 are alternately arranged at intervals, each of the P-type semiconductors 121 and the N-type semiconductors 124 has a first end and a second end, the first ends 122 of the P-type semiconductors 121 and the first ends 125 of the N-type semiconductors 124 are located at the same end, the second ends 123 of the P-type semiconductors 121 and the second ends 126 of the N-type semiconductors 124 are located at the same end, the first ends 122 of the P-type semiconductors 121 and the first ends 125 of one adjacent N-type semiconductors 124 are connected through wires 127, and the second ends 123 of the P-type semiconductors 121 and the second ends 126 of another adjacent N-type semiconductors 124 are connected through wires 127.
In another embodiment, as shown in fig. 7, the temperature difference sensing part 100 is a single-leg semiconductor assembly, the temperature difference sensing part 100 includes a first portion 170 and a second portion 180 that can be folded in half along a center line 160, the first portion 170 and the second portion 180 have the same structure and are connected by a conducting wire 127, the first portion 170 and the second portion 180 each include an insulating substrate layer 110, a flat cable layer 120 and an insulating cover layer 130, and the flat cable layer 120 is sandwiched between the insulating substrate layer 110 and the insulating cover layer 130. It should be noted that in the embodiment shown in fig. 7, in order to more clearly show the structure of the line layer 120, the insulating cover layer 130 is hidden in both the first portion 170 and the second portion 180. As shown in fig. 7, the bus bar layer 120 includes more than two P-type semiconductors 121, and two adjacent P-type semiconductors 121 are connected by a conductive wire 127. It is understood that, in other embodiments, the bus bar layer 120 may further include more than two N-type semiconductors 124, and two adjacent N-type semiconductors 124 are connected by the conductive line 127. When the temperature difference sensing component 100 is used, the first portion 170 and the second portion 180 are firstly folded in half along the central line 160, and then the temperature difference sensing component 100 is clamped between two adjacent single batteries 10, wherein the insulating cover layer 130 of the first portion 170 serves as the first surface 140 of the temperature difference sensing component 100, the insulating cover layer 130 of the second portion 180 serves as the second surface 150 of the temperature difference sensing component 100, the first surface 140 is in contact with the outer surface of one single battery 10, the second surface 150 is in contact with the outer surface of the other single battery 10, when temperature difference exists between two adjacent single batteries 10, temperature difference also exists between the first surface 140 and the second surface 150 of the temperature difference sensing component 100, and a voltage signal is generated, wherein the voltage signal is a temperature difference signal.
In the embodiment shown in fig. 4 to 7, the entire temperature difference sensing part 100 is a flexible sheet, and the materials of the P-type semiconductor 121 and the N-type semiconductor 124 are flexible thermoelectric sensing materials, and in a specific embodiment, the flexible thermoelectric sensing material may be a composite of glass fiber and a Bi2Te3 thin film, a composite of cellulose paper and a Bi2Te3 thin film, a nanoporous selenium (Se) -tellurium (Te) thin film material, a single-layered carbon nanotube and selenium-telluride thin film composite, or a porous nylon film and selenium-telluride thin film composite, wherein the selenium-telluride thin film may be Bi2Te3, Sb2Se3, PbSe, SnSe, Bi2Se3, Cu2Se, or Ag2 Te.
In an embodiment, as shown in fig. 8, a working flow of the battery module temperature abnormality warning device is that after the temperature difference sensing component 100 senses a temperature difference between surfaces of two adjacent single batteries, a temperature difference signal is output to the fault analysis decision component 300, and meanwhile, after the temperature of the single batteries is acquired by the temperature acquisition component 200, a temperature signal is output to the fault analysis decision component 300. After the temperature difference signal and the temperature signal are received by the fault analysis decision part 300, the signals are calculated and analyzed to make a decision, and a decision signal is output to the control part 400, the control part 400 responds according to the received decision signal and outputs a response signal to the early warning part 500, and the early warning part 500 makes a visual and/or auditory early warning prompt according to the received response signal to remind a driver and passengers to take corresponding treatment measures.
In a specific embodiment, the decision signal output by the fault analysis decision component 300 according to the received temperature difference signal and the temperature signal comprises a first-stage decision, a second-stage decision and a third-stage decision in parallel; the first-level decision is that a temperature difference signal is received, and the temperatures of two single batteries generating the temperature difference are both below the safe temperature; the second-level decision is that more than two temperature difference signals are received or more than one temperature signal exceeds the safe temperature; the third level decision is that more than two temperature difference signals are received, and more than one temperature signal exceeds the safe temperature. The control part 400 outputs a three-level response signal according to the received three-level decision signal, and the early warning part 500 outputs a three-level early warning prompt according to the received three-level response signal, wherein each level of response signal corresponds to a one-level decision signal and a one-level early warning prompt. The three-level decision signals represent the potential danger states of the batteries with three different degrees respectively, different whole vehicle response instructions can be linked, but the three-level decision signals are in a parallel relation logically, and meet the requirement of any one-level decision signal, so that the corresponding response signal and the early warning prompt can be triggered. For each level of decision and each level of pre-set instructions of pre-warning prompt, a person skilled in the art can write in battery control system (BMS) software in advance according to different battery packs/battery systems, and the application does not specifically limit the response decision and the response signal of the pre-warning device corresponding to different specific application scenes.
In a specific embodiment, when the temperature difference between two sides of one of the temperature difference sensing parts 100 is greater than or equal to 3 ℃, the temperature difference sensing part 100 generates a cold end and a hot end, which generate a temperature difference voltage U, the voltage signal is transmitted to the fault analysis decision part 300 through the signal line 610 and the CAN communication conducting line 620 in sequence, the fault analysis decision part 300 detects that the temperatures of two adjacent single batteries with the temperature difference are both below the safe temperature through the temperature acquisition part 200, the fault analysis decision part 300 outputs a primary warning response decision signal to the vehicle control system according to the preset response of the temperature difference voltage U, the vehicle control system judges the primary warning response decision signal and outputs a preset primary response signal to send a buzzer and display a text 'battery temperature difference alarm on an operation screen, please check the parking' to the upper computer visual/auditory display early warning part 500, the upper computer vision/hearing display early warning component 500 finally executes the primary response signal to prompt the driver to stop for inspection and complete early warning.
The utility model provides a battery module temperature abnormity early warning device, through the temperature difference between two adjacent battery monomers of real-time supervision and the temperature of every battery cell, synthesize the difference in temperature signal, two signals of temperature signal are judged in advance whether few battery monomer breaks down, and convey this result to user interaction interface and send vision and/or auditory alarm, thereby can monitor latent thermal runaway situation in the early stage, the suggestion driver and crew takes subsequent processing measure, provide sufficient safe evacuation time for driver and crew.
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 application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The early warning device for the temperature abnormity of the battery module is characterized by comprising a temperature difference sensing part, a temperature acquisition part, a fault analysis decision part, a control part and an early warning part, wherein the temperature difference sensing part and the temperature acquisition part are in communication connection with the fault analysis decision part, and the fault analysis decision part and the early warning part are in communication connection with the control part; the temperature difference sensing component is arranged between two adjacent single batteries in the battery module and used for detecting the temperature difference between the two adjacent single batteries and outputting a temperature difference signal to the fault analysis decision-making component; the temperature acquisition component is used for acquiring the temperature of the single battery and outputting a temperature signal to the fault analysis decision-making component; the fault analysis decision-making component is used for receiving the temperature difference signal and the temperature signal and outputting a decision-making signal to the control component; the control component is used for receiving the decision signal and outputting a response signal to the early warning component; the early warning component is used for receiving the response signal and making a visual and/or audible early warning prompt.
2. The battery module temperature abnormality warning device according to claim 1, wherein the temperature difference sensing member is a semiconductor component and is sandwiched between two adjacent single batteries in a sheet shape, and when a temperature difference exists between the two adjacent single batteries, the temperature difference sensing member is capable of generating a voltage signal, and the temperature difference signal is the voltage signal.
3. The battery module temperature abnormality early warning device according to claim 2, wherein the temperature difference sensing member is a pi-type semiconductor assembly, the temperature difference sensing member includes an insulating substrate layer, a bus bar layer, and an insulating cover layer in a thickness direction, the bus bar layer is sandwiched between the insulating substrate layer and the insulating cover layer, the bus bar layer includes two or more P-type semiconductors and two or more N-type semiconductors, the P-type semiconductors and the N-type semiconductors are alternately arranged at intervals, one end of the P-type semiconductor is connected with one end of one adjacent N-type semiconductor through a wire, and the other end of the P-type semiconductor is connected with the other end of the other adjacent N-type semiconductor through a wire.
4. The battery module temperature abnormality warning device according to claim 3, wherein the P-type semiconductor and the N-type semiconductor each have a first end and a second end that are disposed opposite to each other, the first end of the P-type semiconductor and the first end of the N-type semiconductor are located at the same end, the second end of the P-type semiconductor and the second end of the N-type semiconductor are located at the same end, the first end of the P-type semiconductor is connected to the first end of one adjacent N-type semiconductor through a wire, and the second end of the P-type semiconductor is connected to the second end of the other adjacent N-type semiconductor through a wire.
5. The battery module temperature abnormality early warning device according to claim 2, wherein the temperature difference sensing member is a single-leg semiconductor assembly, the temperature difference sensing member includes a first portion and a second portion that can be folded in half along a center line, the first portion and the second portion have the same structure and are connected by a lead, the first portion and the second portion each include an insulating substrate layer, a wiring layer and an insulating cover layer, and the wiring layer is sandwiched between the insulating substrate layer and the insulating cover layer; the bus bar layer comprises more than two P-type semiconductors or more than two N-type semiconductors, and two adjacent P-type semiconductors are connected through a lead, or two adjacent N-type semiconductors are connected through a lead.
6. The battery module temperature abnormality warning device according to claim 1, wherein the temperature acquisition member is a temperature sensor provided at a top cover of the battery cell or a bus bar of the battery module.
7. The battery module temperature abnormality warning device according to claim 1, further comprising a signal transmission part through which the temperature difference signal, the temperature signal, the decision signal and the response signal are transmitted; the signal transmission component is a wired transmission component or a wireless transmission component.
8. The battery module temperature abnormality warning device according to claim 7, wherein the signal transmission member is a wired transmission member, and the wired transmission member includes a signal line and a CAN communication conduction line; the CAN communication conducting wire extends along the arrangement direction of the temperature difference sensing component and is connected between the fault analysis decision component and the control component and between the control component and the early warning component; the temperature acquisition component is connected with the CAN communication transmission line, and the temperature difference induction component is connected with the CAN communication transmission line.
9. The battery module temperature abnormality early warning device according to claim 7, wherein the signal transmission member is a wireless transmission member, the wireless transmission member includes a signal transmitter and a signal receiver, and the temperature difference signal, the temperature signal, the decision signal and the response signal are transmitted through the wireless transmission member.
10. The battery module temperature abnormality warning device according to claim 1, wherein the warning prompt is at least one of a flashing indicator light, a display screen character warning prompt, a buzzer alarm, and a voice warning prompt.
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| CN116879794B (en) * | 2023-09-06 | 2023-11-14 | 速源芯(东莞)能源科技有限公司 | Energy storage power failure detection early warning system |
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Address after: 518000 1-2 Floor, Building A, Xinwangda Industrial Park, No. 18 Tangjianan Road, Gongming Street, Guangming New District, Shenzhen City, Guangdong Province Patentee after: Xinwangda Power Technology Co.,Ltd. Address before: 518107 Xinwangda Industrial Park, No.18, Tangjia south, Gongming street, Guangming New District, Shenzhen City, Guangdong Province Patentee before: SUNWODA ELECTRIC VEHICLE BATTERY Co.,Ltd. |