CN112768792A - Battery system for vehicle and vehicle - Google Patents

Battery system for vehicle and vehicle Download PDF

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Publication number
CN112768792A
CN112768792A CN201911061907.8A CN201911061907A CN112768792A CN 112768792 A CN112768792 A CN 112768792A CN 201911061907 A CN201911061907 A CN 201911061907A CN 112768792 A CN112768792 A CN 112768792A
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CN
China
Prior art keywords
battery module
battery
detection circuit
battery system
vehicle
Prior art date
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Granted
Application number
CN201911061907.8A
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Chinese (zh)
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CN112768792B (en
Inventor
郝彦琛
商光路
张岩
王晓毅
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Audi AG
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Audi AG
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Priority to CN201911061907.8A priority Critical patent/CN112768792B/en
Publication of CN112768792A publication Critical patent/CN112768792A/en
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Publication of CN112768792B publication Critical patent/CN112768792B/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/66—Arrangements of batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • 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
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

Provided are a battery system for a vehicle and the vehicle. The battery system comprises a shell, a battery module arranged in an inner cavity of the shell, a battery module covering part covering the battery module, a detection device and a control device. The battery module cover and the battery module are at least partially spaced apart to form an exhaust passage between the battery module cover and the battery module, an end of the exhaust passage forming an exhaust port. The detection device is arranged at the air outlet. The detection device comprises a support and a detection circuit which is arranged on the support and provided with a signal output end. The detection circuit is configured to be able to be disconnected by damage of gas generated in the battery module when thermal runaway occurs in the battery module and the signal output terminal outputs a circuit disconnection signal when the detection circuit is disconnected. The control device is connected to the signal output and configured to send an alarm signal upon receiving the circuit opening signal. According to the scheme provided by the invention, when thermal runaway occurs in the battery module, the alarm signal can be sent in time, and the response time is shortened.

Description

Battery system for vehicle and vehicle
Technical Field
The present invention relates to the field of vehicle technology, and more particularly, to a battery system for a vehicle and a vehicle having the same.
Background
With the development of vehicle technology, the demand for the safety performance of a battery of a vehicle is also increasing. When abnormal thermal runaway occurs inside the battery system, a large amount of high-temperature and high-pressure gas is generated. According to the latest national requirements to be published, the battery system should provide an alarm signal five minutes before a danger occurs in the passenger compartment due to thermal runaway of individual battery cells, so as to remind passengers in the vehicle of evacuation as soon as possible.
Known battery systems generally employ a voltage sensor or a temperature sensor to detect whether abnormal thermal runaway occurs in the battery system. However, the battery system detected by the voltage sensor or the temperature sensor needs a relatively long response time and cannot meet the new national standard requirements.
Accordingly, it is desirable to provide a battery system for a vehicle and a vehicle having the same to at least partially solve the problems in the prior art.
Disclosure of Invention
To solve the above technical problems, in an aspect of the present invention, a battery system for a vehicle is provided. The battery system comprises a shell, a battery module covering part, a detection device and a control device. The housing has an interior cavity. The battery module is arranged in the inner cavity. The battery module cover covers the battery module, the battery module cover and the battery module are at least partially spaced apart to form an exhaust passage between the battery module cover and the battery module, and an end of the exhaust passage forms an exhaust port. The detection device is arranged at the air outlet. The detection device comprises a support and a detection circuit. The detection circuit is disposed on the support and has a signal output. The detection circuit is configured to be capable of being broken by damage of gas generated in the battery module when thermal runaway occurs in the battery module and the signal output terminal outputs a circuit breaking signal when the detection circuit is broken. The control device is connected to the signal output and configured to send an alarm signal to a user of the vehicle upon receiving the circuit opening signal.
Preferably, at least one of the battery module cover and the battery module is provided with a recess that is recessed toward a direction away from the other to form the air discharge passage between the battery module cover and the battery module.
Preferably, at least a portion of the support is inserted into the exhaust passage via the exhaust port.
Preferably, the support member includes a body portion on which the detection circuit is disposed, the body portion being inserted into the exhaust passage, and a blocking portion connected to the body portion and protruding with respect to the body portion.
Preferably, a wire harness hole is formed in the supporting member, and the signal output end of the detection circuit penetrates out through the wire harness hole.
Preferably, a flexible filling part is arranged in the wiring harness hole, and the signal output end penetrates through the flexible filling part.
Preferably, the battery module covering part is a battery circuit board.
Preferably, the detection circuit is arranged on the support by means of electronic printing.
In a second aspect of the present invention, a vehicle is provided. The vehicle includes any of the battery systems described above.
According to the scheme of the invention, when any battery cell in the battery module is out of control thermally, a large amount of high-temperature and high-pressure gas is generated in the battery module. These gases can receive the battery module covering that covers the battery module when spouting from the battery module thereby flow towards the gas vent with higher velocity of flow along the exhaust passage between battery module covering and the battery module, make the detection circuitry who sets up the detection device at gas vent department damage and break off, detection circuitry's signal output part can output circuit turn-off signal in time, and then make controlling means can send alarm signal to the user of vehicle in time, response time has been shortened, the security performance has been improved.
Drawings
Non-limiting and non-exhaustive embodiments of the present invention are described by way of example with reference to the following drawings, in which:
fig. 1 is an exploded perspective view of a battery system according to a preferred embodiment of the present invention;
FIG. 2 is a partially assembled schematic view of the battery system shown in FIG. 1, showing the detection device mounted on the housing and inserted into the exhaust passage;
FIG. 3 is a schematic perspective view of the detection device shown in FIG. 1; and
fig. 4 is a schematic diagram of connection of detection circuits of a plurality of detection devices of the battery system.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In a first aspect of the present invention, a battery system for a vehicle is provided.
Fig. 1 to 3 schematically show a battery system 100 according to a preferred embodiment of the present invention. Fig. 1 is an exploded perspective view of a battery system 100 according to a preferred embodiment of the present invention; fig. 2 is a partially assembled schematic view of the battery system 100 shown in fig. 1, showing the detection device 130 mounted on the housing 110 and inserted into the exhaust channel 191; and fig. 3 is a perspective view of the detection device 130 shown in fig. 1. The battery system 100 of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the battery system 100 includes a case 110, a battery module 120, a battery module cover 190, a detection device 130, and a control device (not shown).
As shown in fig. 1, the case 110 has an inner cavity (not shown) that may form an accommodation space to accommodate components such as the battery module 120 of the battery system 100. Specifically, in the present embodiment, the housing 110 has a substantially box-like shape. The housing 110 includes a bottom wall (not shown) and a sidewall 112 extending upward from a peripheral edge of the bottom wall. The bottom and side walls 112 enclose an internal cavity having an open top. In addition, the housing 110 also includes a top wall 113 covering the top opening of the internal cavity. The bottom wall and the side wall 112 may be integrally formed, and the top wall 113 may be detachably coupled to the side wall 112 so as to dispose the battery module 120 and the like of the battery system 100 in the inner cavity. Of course, in other embodiments of the invention not shown, the housing 110 may also be any other suitable shape. The housing 110 is typically made of a rigid material.
As shown in fig. 1, at least one battery module 120 is disposed in the inner cavity of the case 110. In the present embodiment, one battery module 120 is disposed in the inner cavity of the housing 110. However, in other embodiments not shown in the present disclosure, any other suitable number of battery modules 120, such as two, three or more, may be disposed in the inner cavity of the housing 110. When the plurality of battery modules 120 are disposed in the inner cavity of the case 110, the plurality of battery modules 120 are connected in series to be able to provide sufficient battery power to the vehicle. Each battery module 120 includes at least one battery cell 121. Preferably, the battery module 120 may include a plurality of battery cells 121, and the plurality of battery cells 121 are connected together in series to be able to provide sufficient battery energy to the vehicle.
As shown in fig. 1 and 2, the battery module cover 190 covers the battery module 120. In the present embodiment, the battery module cover 190 is disposed between the battery module 120 and the top wall 113 of the case 110. The battery module cover 190 may be, for example, a battery circuit board on which the printed circuit board 140 is disposed. The battery module cover 190 may be another cover additionally provided. The battery module cover 190 is at least partially spaced apart from the battery module 120 to form a gas exhaust passage 191 between the battery module cover 190 and the battery module 120. The exhaust passage 191 extends from one end to the other end of the housing 110. The end of the exhaust passage 191 communicates with the outside to form an exhaust port 192 at the end of the exhaust passage 191. When thermal runaway (e.g., fire) occurs in any one of the battery cells 121 in the battery module 120, a large amount of high-temperature and high-pressure gas is generated in the battery module 120. These gases are blocked by the battery module cover 190 covering the battery module 120 when being ejected from the battery module 120 to flow along the exhaust passage 191 between the battery module cover 190 and the battery module 120, and are discharged from the exhaust port 192 at the end of the exhaust passage 191.
Specifically, in the present embodiment, at least one of the battery module cover 190 and the battery module 120 is provided with a recess that is recessed toward a direction away from the other to form a gas discharge passage 191 between the battery module cover 190 and the battery module 120, and an end of the gas discharge passage 191 forms a gas discharge port 192. For example, the battery module cover 190 covers the battery modules 120 above the battery modules 120, and a concave portion recessed toward the upper side is provided in the battery module cover 190 to form the air discharge passage 191 between the battery module cover 190 and the battery modules 120.
As shown in fig. 1 to 3, the detection device 130 is disposed at the air outlet 192. The detection device 130 includes a support 134 and a detection circuit 132. The detection circuit 132 is disposed on the support 134. The detection circuit 132 may be disposed on the support 134 by electronic printing. The detection circuit 132 may be disposed on the support 134 by ink printing, metal printing, or the like. The detection circuit 132 has a signal output 133. The detection circuit 132 is configured to be able to be disconnected by being damaged by gas generated in the battery module 120 when thermal runaway occurs in the battery module 120 and the signal output terminal 133 of the detection circuit 132 outputs a circuit disconnection signal when the detection circuit 132 is disconnected. It should be noted that the term "damage" as used herein refers to irreversible damage or irreversible damage. When any one of the battery cells 121 in the battery module 120 is thermally runaway, a large amount of high-temperature and high-pressure gas is generated in the battery module 120. As described above, the high-temperature and high-pressure gases are blocked by the battery module cover 190 covering the battery modules 120 to flow toward the exhaust port 192 at a high flow rate. In this process, a high flow rate of high-temperature, high-pressure gas acts on the detection circuit 132 of the detection device 130 provided at the exhaust port 192 and causes the detection circuit 132 to break and open.
For example, in one embodiment of the present invention, when the temperature of the gas generated in the battery module 120 is greater than or equal to a predetermined temperature threshold, the gas can fuse the conductive wires of the detection circuit 132, thereby causing the detection circuit 132 to be damaged. For another example, in another embodiment of the present invention, when the pressure of the gas generated in the battery module 120 is greater than or equal to the predetermined pressure threshold, the gas can apply a certain force (e.g., impact force, etc.) to the wires of the detection circuit 132, so that the wires of the detection circuit 132 are broken by the external force, and the detection circuit 132 is damaged. Either of these causes the detection circuit 132 to open.
The control means are connected to the signal output 133 of the detection circuit 132. When the detection circuit 132 is broken by the gas generated in the battery module 120, the signal output terminal 133 of the detection circuit 132 transmits a circuit breaking signal to the control device. The control device is configured to send an alarm signal to a user of the vehicle (e.g., a driver or a passenger of the vehicle) upon receiving the circuit-open signal to alert the user of the vehicle to evacuate as quickly as possible to avoid danger. The alarm signal may be an audible cue signal and/or a visual cue signal.
The detecting device 130 and its installation according to a preferred embodiment of the present invention will be described in detail with reference to fig. 2 and 3.
As shown in fig. 2 and 3, at least a portion of the support 134 of the detection device 130 is inserted into the exhaust passage 191 via the exhaust port 192. In this manner, when thermal runaway occurs in any one of the battery cells 121 in the battery module 120, a large amount of high-temperature and high-pressure gas generated in the battery module 120 can act on the detection circuit 132 disposed on the support 134 relatively quickly, so that the detection circuit 132 is broken to be disconnected.
Specifically, in the present embodiment, the support 134 includes a body portion 148 and a blocking portion 136. The body part 148 is inserted into the exhaust passage 191 between the battery module cover 190 and the battery module 120 through the exhaust port 192. The body portion 148 has dimensions slightly smaller than the dimensions of the exhaust channel 191 and the exhaust port 192. The blocking portion 136 is connected to the body portion 148 and protrudes relative to the body portion 148. For example, in one preferred embodiment of the present invention, the battery module cover 190 is disposed in a horizontal direction, and the exhaust passage 191 extends in the horizontal direction. The body portion 148 of the support 134 is horizontally inserted into the exhaust passage 191. The blocking portion 136 is connected to the body portion 148 at one end of the body portion 148 and protrudes downward in a vertical direction with respect to the body portion 148. The stopper 136 and the body 148 may be integrally formed or may be formed separately. The blocking portion 136 may prevent the body portion 148 of the supporter 134 from being excessively inserted into the exhaust passage 191 to facilitate the removal of the supporter 134 from the exhaust passage 191.
The detection circuit 132 is disposed on the body portion 148 of the support 134. Alternatively, the detection circuit 132 may be disposed on the body portion 148 of the support 134 by electronic printing. The body portion 148 of the support 134 may have a flat surface to facilitate placement of the detection circuit 132 thereon. The detection circuit 132 may be disposed at any suitable location of the body portion 148 of the support 134 that is exposed to the exhaust passage 191.
Optionally, a wire harness aperture (not shown) is provided in the support 134 of the detection device 130. The signal output 133 of the detection circuit 132 may be passed out through a harness hole to be connected to a control device. Further, a flexible caulking portion 139 may be provided in the harness hole, and the flexible caulking portion 139 is made of a flexible material (e.g., rubber, etc.). The signal output 133 of the detection circuit 132 passes out through the flexible stuff portion 139. In this way, undesired movement of the wires of the detection circuit 132 in the beam hole can be avoided.
Optionally, in order to avoid undesired movement of the support 134 after being inserted into the exhaust channel 191 through the exhaust port 192, the detection device 130 may further include a clamp 137, and the clamp 137 is used for detachably mounting the support 134 to the housing 110.
Specifically, as shown in fig. 2, the housing 110 of the battery system 100 is generally provided with at least two handling holes 114, and the at least two handling holes 114 can be grasped by a robot to handle the battery system 100. In the present embodiment, the operation hole 114 is provided at the top of the sidewall 112 of the housing 110. The clamping member 137 is connected to the support 134 and clamped on the wall between the operation holes 114 of the housing 110. For example, in a preferred embodiment of the present invention, the clamping member 137 is clamped to a wall of the housing 110 between two adjacent operation holes 114. In this way, the walls between the operation holes 114 disposed on the housing 110 can be directly utilized, and there is no need to provide additional through holes for the clamping members 137 to clamp, thereby simplifying the structure and manufacturing process of the battery system 100 and reducing the cost.
Preferably, the clamp 137 is slidably coupled to the support 134 in a direction perpendicular to the body portion 148 of the support 134. Specifically, one of the support 134 and the clamp 137 is provided with a slide groove 138 extending in a direction perpendicular to the body portion 148 of the support 134, and accordingly, the other of the support 134 and the clamp 137 is provided with a slide portion 149, the slide portion 149 being slidable in the slide groove 138.
For example, in a preferred embodiment of the present invention, the exhaust passage 191 is disposed in a horizontal direction. The body portion 148 of the support 134 extends in a horizontal direction. The support 134 is provided with a slide groove 138 extending in the vertical direction. The slide groove 138 may be provided on the blocking portion 136 of the support 134. The holder 137 is provided with a sliding portion 149. The sliding portion 149 of the holder 137 is slidable in the slide groove 138 in the vertical direction by an external force.
When assembling the detecting device 130, the sliding portion 149 of the clamping member 137 may be slid to a proper position of the sliding slot 138, preferably, to the topmost end of the sliding slot 138. The support 134 is then inserted into the exhaust passage 191 via the exhaust port 192. Finally, the sliding portion 149 of the clamp 137 is slid to a proper position in the vertical direction so that the clamp 137 can be clamped on the wall between the operation holes 114. The detection device 130 may be removed from the housing 110 in the reverse procedure. By the movement of the sliding portion 149 in the sliding groove 138 in a direction perpendicular to the body portion 148, that is, perpendicular to the vent channel 191 or the battery module cover 190, it is possible to avoid interference of the holder 137 with the housing 110 during assembly and disassembly of the detection device 130 to hinder the insertion of the support 134 of the detection device 130 into the vent channel 191 or the withdrawal from the vent channel 191.
According to the aspect of the present invention, when any one of the battery cells 121 in the battery module 120 is thermally runaway, a large amount of high-temperature and high-pressure gas is generated in the battery module 120. When the gas is sprayed out of the battery module 120, the gas is blocked by the battery module covering piece 190 covering the battery module 120 and flows towards the exhaust port 192 at a high flow speed along the exhaust channel 191 between the battery module covering piece 190 and the battery module 120, so that the detection circuit 132 of the detection device 130 arranged at the exhaust port 192 is damaged and disconnected, the signal output end 133 of the detection circuit 132 can output a circuit disconnection signal in time, the control device can send an alarm signal to a user of the vehicle in time, the response time is shortened, and the safety performance is improved.
As described above, although only one battery module 120 is disposed in the inner cavity of the case 110 in the preferred embodiment of the present invention, two or more battery modules 120 may be disposed in the inner cavity of the case 110. When a plurality of battery modules 120 are disposed in the inner cavity of the housing 110, the plurality of battery modules 120 may share the same exhaust channel 191, exhaust port 192, and detection device 130, or a plurality of exhaust channels 191, a plurality of exhaust ports 192, and a plurality of detection devices 130 may be correspondingly disposed to further shorten the response time. In fig. 4 n detection circuits 1-n of n detection means are shown. As shown in fig. 4, when a plurality of detection devices 130 are provided, the signal output terminals 133 of the detection circuits 132 of each detection device 130 may be connected in series and finally connected to the control device. When any battery cell 121 in any battery module 120 is out of control due to heat, a large amount of high-temperature and high-pressure gas generated in the battery module 120 can damage the detection circuit 132 of the corresponding detection device 130. Since the signal output terminals 133 of the detection circuits 132 of each of the detection devices 130 are connected in series, the damage of the detection circuit 132 of any one of the detection devices 130 can output a circuit disconnection signal to the control device, so that the control device can timely transmit an alarm signal to a user of the vehicle.
In a second aspect of the invention, a vehicle is also provided. The vehicle is provided with the battery system described above.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
While the present invention has been described in connection with the embodiments, it is to be understood by those skilled in the art that the foregoing description and drawings are merely illustrative and not restrictive of the broad invention, and that this invention not be limited to the disclosed embodiments. Various modifications and variations are possible without departing from the spirit of the invention.

Claims (9)

1. A battery system for a vehicle, the battery system comprising:
a housing having an interior cavity;
the battery module is arranged in the inner cavity;
a battery module cover covering the battery module, the battery module cover and the battery module being at least partially spaced apart to form an exhaust passage between the battery module cover and the battery module, an end of the exhaust passage forming an exhaust port;
detection device, detection device sets up exhaust port department, detection device includes:
a support member; and
a detection circuit disposed on the support and having a signal output terminal configured to be capable of being disconnected by damage from gas generated in the battery module when thermal runaway occurs in the battery module and to output a circuit disconnection signal when the detection circuit is disconnected; and
a control device connected to the signal output and configured to send an alarm signal to a user of the vehicle upon receipt of the circuit opening signal.
2. The battery system according to claim 1, wherein at least one of the battery module cover and the battery module is provided with a recess that is recessed toward a direction away from the other to form the exhaust passage between the battery module cover and the battery module.
3. The battery system of claim 2, wherein at least a portion of the support is inserted into the exhaust channel via the exhaust port.
4. The battery system according to claim 3, wherein the support member includes a body portion on which the detection circuit is disposed, the body portion being inserted into the exhaust passage, and a blocking portion that is connected to the body portion and protrudes with respect to the body portion.
5. The battery system according to any one of claims 1 to 4, wherein a harness hole is provided in the support member, and the signal output terminal of the detection circuit is passed out through the harness hole.
6. The battery system according to claim 5, wherein a flexible caulking portion is provided in the harness hole, and the signal output terminal passes through the flexible caulking portion.
7. The battery system according to any one of claims 1 to 4, wherein the battery module cover is a battery wiring board.
8. The battery system according to any one of claims 1 to 4, wherein the detection circuit is arranged on the support by electronic printing.
9. A vehicle characterized by comprising the battery system according to any one of claims 1 to 8.
CN201911061907.8A 2019-11-01 2019-11-01 Battery system for vehicle and vehicle Active CN112768792B (en)

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Application Number Priority Date Filing Date Title
CN201911061907.8A CN112768792B (en) 2019-11-01 2019-11-01 Battery system for vehicle and vehicle

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Application Number Priority Date Filing Date Title
CN201911061907.8A CN112768792B (en) 2019-11-01 2019-11-01 Battery system for vehicle and vehicle

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CN112768792A true CN112768792A (en) 2021-05-07
CN112768792B CN112768792B (en) 2024-06-11

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Citations (5)

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