CN209181813U - Sensor, battery module, battery management component and electric car - Google Patents
Sensor, battery module, battery management component and electric car Download PDFInfo
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- CN209181813U CN209181813U CN201822021659.1U CN201822021659U CN209181813U CN 209181813 U CN209181813 U CN 209181813U CN 201822021659 U CN201822021659 U CN 201822021659U CN 209181813 U CN209181813 U CN 209181813U
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Abstract
Sensor, battery module, battery management component and electric car.Sensor includes sensing element and controller, sensing element is connected with controller, controller is configured so that, sensor is set to be in normal mode of operation when sensor receives command signal, sensor is set to be in energy-saving mode when sensor does not receive command signal, wherein, in normal mode of operation, sensor is persistently output to the outside detection signal, in energy-saving mode, sensor is alternately at wake-up period and dormancy period, in wake-up period, sensor is detected and will test end value and threshold value comparison, when testing result value is more than threshold value, sensor is output to the outside wake-up signal, in dormancy period, sensor dormancy.Sensor can be carried out low-power consumption accurate measurements self-diagnosable simultaneously.
Description
Technical field
The disclosure relates generally to a kind of sensors.Present disclosure also relates to a kind of battery module and electricity with the sensor
Pond management assembly.The utility model further relates to the electric car with the sensor.
Background technique
Sensor is widely used in parameter monitoring.On the one hand, in some scenarios, it is desirable to sensors
Power consumption exhausts as few as possible to avoid the electric quantity of power supply of sensor.For example, in the car, sensor is usually for example by plumbic acid electricity
Pond power supply, if sensor consumes always electric power in automobile stagnation of movement, be likely to result in lead-acid battery and exhaust, thus make automobile without
Method starts.On the other hand, although can be reduced its power consumption to sensor power-off, may result in sensor can not correctly be supervised
Survey external parameter variation.
Utility model content
For the above problem in the prior art, the first purpose of the disclosure is to provide a kind of sensor, can be with low function
Correctly monitoring parameters change consumption.
It is according to the present utility model in a first aspect, providing a kind of sensor, the sensor includes sensing element and control
Device processed, the sensing element are connected with controller, which is characterized in that the controller is configured so that, is received in sensor
The controller makes sensor be in normal mode of operation when to command signal, when sensor does not receive command signal described in
Controller makes sensor be in energy-saving mode, wherein in the normal mode of operation, the sensor is persistently output to the outside
Detection signal corresponding with the testing result of sensor, and wherein, in the energy-saving mode, the sensor is alternately
In wake-up period and dormancy period, in the wake-up period of the energy-saving mode, sensor is detected and be will test
End value is compared with a threshold value, and when the testing result value is more than the threshold value, the sensor, which is output to the outside, is called out
Awake signal, in the dormancy period of the energy-saving mode, the sensor dormancy.
Preferably, the sensor is pressure sensor, force snesor, temperature sensor, voltage sensor, current sense
Device and/or smoke detectors.
Preferably, the sensor further includes order receiving unit, detection signal output section and wake-up output section, the order
Receiving unit, the detection signal output section and the wake-up output section are connected with the controller, the order receiving unit quilt
It is configured to for receiving the command signal, the detection signal output section is configured for exporting from the controller
The detection signal, the wake-up output section are configured for exporting the wake-up signal from the controller.
Preferably, the sensor further includes wireless transmission and receiving module, and the wireless transmission and receiving module are by structure
It causes for receiving the command signal in a manner of wireless telecommunications, being exported in a manner of wireless telecommunications from the controller
The detection signal and the wake-up signal from the controller is exported in a manner of wireless telecommunications.
Preferably, in the wake-up period of the energy-saving mode, the threshold value is updated at predetermined time intervals.
Preferably, in the wake-up period of the energy-saving mode, the threshold value is at predetermined time intervals according to the biography
The rate of change and/or other algorithms of testing result and/or testing result that sensor detects are updated.It is further preferred that
In the wake-up period of the energy-saving mode, pressure that the threshold value is detected according to pressure sensor at predetermined time intervals
The rate of change and/or other algorithms of value and/or pressure value are updated.
Preferably, the sensor is configured to whether check sensor while being output to the outside the wake-up signal
The command signal is received, stops exporting the wake-up signal if receiving the command signal.
Preferably, the sensor is configured to automatically switch to while being output to the outside the wake-up signal normally
Operating mode.
Preferably, the sensor is configured so that the detection signal and/or the wake-up signal can be described
Controller measurement, to make sensor to the detection signal and/or the wake-up signal and/or to be exported to the detection signal
Portion and/or the wake-up output section carry out fault diagnosis.
Preferably, the wireless transmission and receiving module are configured to be sent out checking signal.
Preferably, the sensing element and the controller are encapsulated in the shell of sensor.
Preferably, the duration of the wake states is 5 milliseconds to 50 milliseconds, and the duration of the dormancy period is
300 milliseconds to 1000 milliseconds.
Second aspect according to the present utility model, provides a kind of battery module, and the battery module includes: battery pack；
And mentioned-above sensor, the sensor are used to monitor the state of battery pack.
The third aspect according to the present utility model provides a kind of battery management component, comprising: battery management system；With
And according to mentioned-above sensor, the sensor is used to monitor the state of battery, wherein the command signal is from institute
Battery management system is stated, and the wake-up signal is exported to the battery management system to wake up the battery management system
System.
Preferably, the battery management system has the device for receiving the checking signal from sensor.
Fourth aspect according to the present utility model provides a kind of electric car, comprising: battery pack；Battery management system；
And according to mentioned-above sensor, the sensor is used to monitor the state of battery pack, wherein the command signal comes from
In the battery management system, and the wake-up signal is exported to the battery management system to wake up the cell tube
Reason system.
Preferably, the battery management system has the device for receiving the checking signal from sensor.
Due to use above-mentioned construction, sensor can switch controllably between normal mode of operation and energy-saving mode with
It reduces power consumption, while independently revival and autonomous suspend mode and external wake can be carried out in energy-saving mode, so as to quasi- in time
Really parameter is monitored.In addition, the sensor of the disclosure can also regularly update the threshold value in threshold decision, is right
External wake carries out confirmation and exports to the detection signal of sensor and/or the wake-up signal, the detection signal
Portion and/or the wake-up output section carry out automatic fault diagnosis, to improve the accuracy and reliability of monitoring.
Detailed description of the invention
After following description is read in conjunction with the figure, many aspects of the disclosure are better understood with, attached
In figure:
Fig. 1 is the schematic diagram according to the sensor of first embodiment of the present disclosure；
Fig. 2 is the schematic diagram according to the sensor of second embodiment of the present disclosure；
Fig. 3 is the schematic diagram according to the sensor of third embodiment of the present disclosure；
Fig. 4 is the schematic diagram according to the sensor of fourth embodiment of the present disclosure；
Fig. 5 is the schematic diagram according to the sensor of fifth embodiment of the present disclosure；
Fig. 6 is the schematic diagram according to the sensor of sixth embodiment of the present disclosure；And
Fig. 7 is the schematic diagram with the electric car of the sensor according to the disclosure.
Specific embodiment
The description disclosure that hereinafter reference will be made to the drawings, attached drawing therein show several embodiments of the disclosure.However it should
Understand, the disclosure can show in a number of different manners, it is not limited to embodiment as described below；It is true
On, embodiment as described below is intended to make the disclosure of the disclosure more complete, and absolutely proves this public affairs to those skilled in the art
The protection scope opened.It is to be further understood that embodiment disclosed herein can be combined in various ways, to provide more
Mostly additional embodiment.
It should be understood that the terminology in specification is only used for description specific embodiment, it is no intended to limit the disclosure.
All terms (including technical terms and scientific terms) that specification uses unless otherwise defined, all have those skilled in the art
The normally understood meaning of member.For the sake of concise and/or is clear, well known function or structure can be no longer described in detail.
The singular " one " and " described " and "the" that specification uses are unless clearly indicate, comprising plural form.
The terminology "include", "comprise" and " having " that specification uses indicate there is claimed feature, but there are one for repulsion
Or a number of other features.The terminology "and/or" that specification uses includes that correlation lists any and complete of one or more of item
Portion's combination.
In the description, claim an element " to be connected " with another element, unless otherwise indicated, refer to an element and another member
Part is connected directly, be indirectly connected intermediary element or by wireless telecommunications by way of be wirelessly connected.It contrasts, claims one
When a element and another element " being connected directly ", it will be not present intermediary element.
Without opposite explanation, each feature in the presently disclosed embodiments and embodiment can be independent
Ground is used in conjunction with other feature or individually or in combination with other feature is applied to other any embodiments
In embodiment.
The system of this specification description can also be received information using one or more controllers and convert the received letter of institute
Breath is to generate output.The controller may include any type of computing device, counting circuit or any type of processor or
It is able to carry out the processing circuit of series of instructions stored in memory.The controller may include multiple processors and/or more
It is core central processing unit (CPU) and may include any type of processor, such as microprocessor, digital signal processor, micro-
Controller, specific integrated circuit (ASIC) and single-chip microcontroller etc..The controller may also include memory with storing data and/or algorithm
To execute series of instructions.
Any means, program, algorithm or the coding of this specification description can be converted or are expressed as programming language or meter
Calculation machine program." programming language " and " computer program " be will be assigned to any language of computer, and including
The growth of (but being not limited to) these language and they: assembler language, Basic, autoexec, BCPL, C, C+, C++,
Delphi, Fortran, Java, JavaScript, machine code, operating system command language, Pascal, Perl, PL1, foot
This language, Visual Basic, the metalanguage of its own designated program and the first generation, the second generation, the third generation, forth generation and
Fifth-generation computer language.Equally include is database and other data patterns, and other any metalanguage.In order to this
The purpose of definition, not between the language for being interpreted, compiling either using between compiling and the language of interpretation both methods
It distinguishes.For the purpose of this definition, do not distinguished between the compiled version of program and source version.Therefore, it refers to
Programming language may be present in the program in more than one state (such as source state, compiling state, Obj State or linking status)
It is with reference to any and all this states.This definition also includes the intention of effective instruction and these instructions.
It is illustrated below with reference to first embodiment of the Fig. 1 to the sensor 1 of the disclosure.Sensor 1 may include sensing
Device shell 10, controller 102, order receiving unit 103, detection signal output section 104, wakes up output section 105 at sensing element 101.
Sensor 1 can also include signal processing chip 1091, Voltagre regulator 106, energization pins 107 and grounding pin 108.
Sensing element 101 can be such as pressure sensing element, temperature for detecting external parameter and exporting sensing signal
Spend the various known sensing elements such as sensing element, Voltage sensing element, current sensing element and/or flue gas sensing element.Letter
Number processing chip 1091 can be configured for that the processing of sensing signal that sensing element 101 exports is converted to and can be controlled
The measuring signal of the types such as the current or voltage of the processing of device 102.Sensing element 101 can pass through signal processing chip 1091 and control
Device 102 processed is connected, and signal processing chip 1091 sends the measuring signal to controller 102 and refers to from the reception of controller 102
It enables.
Order receiving unit 103 is configured for receiving such as command signal from sensor external and by the order
Signal passes to controller 102.It one end of order receiving unit 103 can be with the external control system phase of the generation command signal
Even, the other end of order receiving unit 103 can be connected with controller 102.The order receiving unit can be known in the art
Interface circuit and/or wiring.
Detection signal output section 104 can be connected with controller 102, for output under the control of the controller from control
The detection signal corresponding with the testing result of sensor of device 102.Waking up output section 105 can be connected with controller 102, use
In under the control of the controller to external (such as to the external control system) wake-up signal of the output from controller 102.
Detection signal output section 104 and wake-up output section 105 can be interface circuit known in the art and/or wiring.
Energization pins 107 are used to receive electric power from power supply, and feed electrical power to detection signal output section 104 and call out
Awake output section 105.Energization pins 107 can also feed electrical power to controller 102 and signal processing by Voltagre regulator 106
Chip 1091.
Controller 102 is for executing following control.
When order receiving unit 103 is for example externally controlled system and receives command signal (such as high level signal), life
Enable receiving unit 103 that the command signal is passed to controller 102.In this case, controller 102 is in sensor 1 just
Normal operating mode.In the normal mode of operation, controller 102 is with the sampling period appropriate (such as 10ms) to signal processing
The measuring signal of chip 1091 carries out sampling and calculation processing conversion, and controlling detection signal output section 104 keeps it lasting defeated
Signal is detected out.
When order receiving unit 103 does not receive command signal (such as order receiving unit is in low level state), control
Device 102 makes sensor 1 be in energy-saving mode (low-power consumption mode).In the energy-saving mode, sensor 1 is alternately at revival
Period and dormancy period.In the dormancy period of the energy-saving mode, the sensor dormancy.In the energy-saving mode
In the wake-up period, controller 102, which controls sensing element 101, makes it execute detection, and controller 102 will be from sensing element
The detected value of 101 acquisition is compared with threshold value, if it is determined that the detected value be more than the threshold value, then controller 102 to
Waking up output section 105 and sending to instruct makes the wake-up output section 105 send out wake-up signal, if it is determined that the detected value does not surpass
The threshold value is crossed, then continues that sensor 1 is made to be in energy-saving mode, it is made to be alternately at wake-up period and dormancy period.It is described
Wake-up signal for example can be square wave, triangular wave, sine wave or any other suitable wave signal.Preferably, described in the judgement
In the case that detected value is more than the threshold value, controller 102 makes sensor 1 exit energy-saving mode and return to normal mode of operation.
The duration of the dormancy period and the duration of the wake-up period are much bigger.For example, the suspend mode week
The duration of phase can advantageously be that 300ms to 1000ms, more preferably 400ms are to 800ms, further preferably
600ms, the duration of the wake-up period can advantageously be 5ms to 50ms, be more preferably 10ms to 30ms, be further
Preferably 15ms.Duration listed above is only example, those skilled in the art completely can using it is any its
Its duration.
In this way, sensor 1 both can according to command signal controllably normal mode of operation and energy-saving mode it
Between switching to reduce power consumption, and can during energy-saving mode automatically perceptual parameters variation and and then external portion's control system
It is waken up, to realize the timely correct monitoring of parameter.
The threshold value can be preset value.For example, the threshold value, which can be equal to a reference value, adds judgement amplitude.Wherein institute
Stating a reference value for example can be detected value of the sensor under defined normal condition, and the judgement amplitude for example can be according to fair
Perhaps the degree for deviateing the defined normal condition is chosen.It is further preferred that the initial value of the threshold value is preset value,
And in the wake-up period of the energy-saving mode, the threshold value is updated at predetermined time intervals.It preferably, can basis
The update is carried out from the detected value of sensing element 101 obtained.For example, the threshold value updated can be set to currently normally
Value plus judgement amplitude.Wherein the current normal value is the detected value of sensor under the present circumstances under normal operation.Into one
Step preferably, the threshold value can be updated according to the rate of change of the detected value or is updated by other algorithms described
Threshold value.The predetermined time can be 1 minute, 5 minutes, 10 minutes, 20 minutes or 1 hour or it is any other suitable when
Between.By making sensor timing is autonomous to update threshold value, the influence that environmental change independently judges sensor can be offset.
When the sensor 1 is pressure sensor, the threshold value can be pressure value and/or rate of pressure change and/
Or the value that other algorithms obtain.Preferably, the threshold value can according to from sensing element 101 the pressure detection value obtained and/or
The rate of change of pressure detection value and/or the update is carried out by other algorithms.Correspondingly, when the sensor 1 is power
Sensor, temperature sensor, current sensor, voltage sensor, smoke detectors and/or other any kind of sensors
When, which can correspondingly be size, temperature value, current value, voltage value, smoke components/concentration value and/or the other phases of power
The detected value answered, and can be according to the size of the power obtained from sensing element 101, temperature value, current value, voltage value, cigarette
It gas ingredient/concentration value and/or other corresponding detected values and/or its rate of change and/or is carried out by other algorithms described
It updates.
When wake-up output section 105 exports the wake-up signal for waking up external control system to the external control system,
It can check whether order receiving unit 103 receives the command signal.It preferably, can be in wake-up signal one or more weeks
The end of phase checks whether order receiving unit 103 receives the command signal.If detecting life when exporting wake-up signal
It enables receiving unit 103 receive the command signal, then stops exporting wake-up signal.In this way, sensor 1 can be confirmed
External control system is independently waken up, to increase system reliability.
Sensor can also have the function of automatic fault diagnosis.Specifically, controller 102 can independently detect the detection
The detection signal and/or the wake-up signal of the transmission of signal output section 104 and/or wake-up output section 105, to judge to examine
It surveys signal output section 104 and/or wakes up whether output section 105 is in normal operating conditions.Optionally, controller 102 is independently examined
The detection signal and/or the wake-up signal surveyed can have check code.Preferably, the detection signal output section 104
And/or wake up output section 105 can also to the external detection signal sent with check code and/or the wake-up signal with
It will pass through external control system and carry out signal checking.This process can when sensor 1 detects the command signal or
It is carried out at other any moment.In this way, sensor 1 has autonomous diagnostic function, can prevent the output section of sensor 1
It breaks down and correct monitoring that is undiscovered and influencing sensor.
It is illustrated below with reference to second embodiment and 3rd embodiment of the Fig. 2 and Fig. 3 to the sensor 1 of the disclosure.?
To in the explanation and diagram of these embodiments, appended drawing reference identical with the embodiment of front indicates identical component, and is
It will only illustrate the difference of these embodiments and first embodiment for purpose of brevity and omit to identical component, structure, function
The explanation of energy, parameter and logic.It will be appreciated by a person skilled in the art that unless otherwise indicated, the sensor of the disclosure its
The component, structure, function, parameter and logic of its all embodiment can be applied to the present embodiment.
In a second embodiment shown in figure 2, with signal amplifier 1092 instead of the signal processing in first embodiment
Chip 1091.The signal amplifier 1092 is for amplifying the signal that sensing element 101 senses and by amplified letter
It number is input in controller 102.In the present embodiment, being further processed of signal (such as signal can be realized with controller 102
Conversion, calculation processing etc.) function.
In 3rd embodiment shown in Fig. 3, the signal processing chip 1091 in first embodiment is omitted, to make to feel
Element 1 is surveyed to be connected without signal processing chip and signal amplifier with controller 102.In the present embodiment, controller 102
It can integrate the functions such as signal amplification, conversion, calculation processing.In this way, allow sensor 1 more integrated, from
And its volume can be made smaller.
Fig. 4-Fig. 6 shows the embodiment of the receiving and transmitting signal in a manner of wireless telecommunications of sensor 1 of the disclosure.
It is illustrated below with reference to fourth embodiment of the Fig. 4 to the sensor 1 of the disclosure.To the embodiment explanation and
In diagram, appended drawing reference identical with the embodiment of front indicates identical component, and will only illustrate this for simplicity
The difference of embodiment and first embodiment and omit the explanation to identical component, structure, function, parameter and logic.But
It will be understood by those skilled in the art that unless otherwise indicated, component, the knot of other all embodiments of the sensor of the disclosure
Structure, function, parameter and logic can be applied to the present embodiment.
In fourth embodiment shown in Fig. 4, sensor 1 includes that wireless transmission and receiving module 1010 are real to substitute first
It applies the order receiving unit 103 in example, detection signal output section 104 and wakes up output section 105.The wireless transmission and receiving module
1010 are connected with controller 102.The wireless transmission and receiving module 1010 are configured for connecing in a manner of wireless telecommunications
The command signal is received, the detection signal is exported in a manner of wireless telecommunications and exports described call out in a manner of wireless telecommunications
Awake signal.The wireless transmission and receiving module can for example, by WiFi, 2G/3G/4G/5G mobile communication, bluetooth,
Any wireless communication mode such as Zigbee, LPWAN is realized.
Energization pins 107 can feed electrical power to signal processing chip 1091, controller by Voltagre regulator 106
102 and wireless transmission and receiving module 1010.Sensing element 101 can pass through signal processing chip 1091 and 102 phase of controller
Even.
One end of wireless transmission and receiving module 1010 can be connected with the external control system for generating the command signal.
Wireless transmission and receiving module 1010 can be received the command signal in a manner of wireless telecommunications and pass the command signal
Pass controller 102.
Controller 102 is for executing following control.
When wireless transmission and receiving module 1010 are for example externally controlled system and receive command signal, wireless transmission and
The command signal is passed to controller 102 by receiving module 1010.In this case, controller 102 is in sensor 1 just
Normal operating mode.In the normal mode of operation, controller 102 is with the sampling period appropriate (such as 10ms) to signal processing
The measuring signal of chip 1091 carries out sampling and calculation processing conversion, and control wireless transmission and receiving module 1010 make its with
The mode of wireless telecommunications persistently exports detection signal.
When wireless transmission and receiving module 1010 do not receive command signal, controller 102 makes sensor 1 be in section
It can mode (low-power consumption mode).In the energy-saving mode, sensor 1 is alternately at wake-up period and dormancy period.Institute
It states in the dormancy period of energy-saving mode, the sensor dormancy.In the wake-up period of the energy-saving mode, control
Device 102, which controls sensing element 101, makes it execute detection, and controller 102 will be from the detected value of sensing element 101 obtained
It is compared with threshold value, if it is determined that the detected value is more than the threshold value, then controller 102 is to wireless transmission and receiving module
1010, which send instruction, makes the wireless transmission and receiving module 1010 send out wake-up signal and simultaneously in a manner of wireless telecommunications
Normal mode of operation is automatically switched to, if it is determined that the detected value is less than the threshold value, then continues that sensor 1 is made to be in section
Energy mode simultaneously makes it be alternately at wake-up period and dormancy period.The wake-up signal for example can be square wave, triangular wave, just
String wave or any other suitable wave signal.Preferably, in the case where judging that the detected value is more than the threshold value, controller
102 make sensor 1 exit energy-saving mode and return to normal mode of operation.
In this way, other than it can be realized effect described in first embodiment of the present disclosure, compared to
One embodiment can save pin and the wiring of detection signal, wake-up signal and command signal, make sensor to 3rd embodiment
Meet the needs of wireless transmission occasion.
Wireless transmission and receiving module 1010 are exported to the external control system for waking up in a manner of wireless telecommunications
When the wake-up signal of external control system, it can check whether wireless transmission and receiving module 1010 receive the order simultaneously
Signal.Preferably, can check whether are wireless transmission and receiving module 1010 at the end in wake-up signal one or more periods
Receive the command signal.It is described to detect that wireless transmission and receiving module 1010 receive when if exporting wake-up signal
Command signal then stops exporting wake-up signal.In this way, sensor 1 can be confirmed that external control system is autonomous
It wakes up, to increase system reliability.
Preferably, wireless transmission and receiving module 1010 can also be sent out the signal with check code, outer to facilitate
Portion's system judges the command signal and/or the detection signal, during wireless transmission, if vicious situation hair
It is raw.This process can be carried out when sensor 1 detects the command signal or at other any moment.
It is illustrated below with reference to the 5th and sixth embodiment of the sensor 1 of Fig. 5-6 pairs of disclosure.To these implementations
In the explanation and diagram of example, appended drawing reference identical with the embodiment of front indicates identical component, and for simplicity
It will only illustrate the difference of the embodiment and fourth embodiment and omit to identical component, structure, function, parameter and logic
Explanation.It will be appreciated by a person skilled in the art that unless otherwise indicated, other all embodiments of the sensor of the disclosure
Component, structure, function, parameter and logic can be applied to the present embodiment.
In the 5th embodiment shown in Fig. 5, with signal amplifier 1092 instead of the signal processing in fourth embodiment
Chip 1091.The signal amplifier 1092 is for amplifying the signal that sensing element 101 senses and by amplified letter
It number is input in controller 102.In the present embodiment, being further processed of signal (such as signal can be realized with controller 102
Conversion, calculation processing etc.) function.
In sixth embodiment shown in Fig. 6, the signal processing chip 1091 in fourth embodiment is omitted, to make to feel
Element 1 is surveyed to be connected without signal processing chip and signal amplifier with controller 102.In the present embodiment, controller 102
It can integrate the functions such as signal amplification, conversion, calculation processing.In this way, allow sensor 1 more integrated, from
And its volume can be made smaller.
Sensor 1 according to various embodiments of the present disclosure can be pressure sensor, temperature sensor, smoke detectors,
Voltage sensor, current sensor or any other sensor.
As a kind of concrete application, sensor 1 according to various embodiments of the present disclosure can be used for monitoring the shape of battery pack
State, especially for monitoring the state of battery pack in electric car, such as monitor in battery pack whether will and/or
Through thermal runaway occurs.
Fig. 7 schematically shows electric car 4.Electric car 4 may include biography according to various embodiments of the present disclosure
Sensor 1, battery pack 2 and battery management system 3.Battery management system 3 is used to monitor and manage the state of battery in battery pack 2
The state of (such as charge condition, hot situation of battery etc.) and vehicle, and according to monitoring information summary control battery pack and vehicle.
Battery management system 3 can use existing any battery management system (BMS).Sensor 1 is mounted in battery pack 2, installs
It in battery pack 2 or is mounted near battery pack 2, for various parameters (such as the gas pressure, temperature by monitoring battery pack
Degree, electric current, voltage, and/or flue gas etc.) monitor in battery pack whether will and/or to have occurred and that thermal runaway.The sensor 1
Any part, structure, function, parameter and the logic of previously described sensor 1 can be used, for simplicity, below
The description that part had been made in front is omitted in description.
Battery management system 3 can be connected with sensor 1.When vehicle is for instance in driving status or charged state, electricity
Pond management system 3 is in running order, and will be to the order receiving unit 103 or wireless transmission and receiving module of sensor 1
The 1010 output command signals.In this case, as previously described, sensor 1 will be placed in the normal mode of operation,
The detection signal output section 104 of sensor 1 or wireless transmission and receiving module 1010 can be constantly defeated to battery management system 3
Signal is detected, out so that battery management system carries out comprehensive descision and control.When vehicle is for instance in dead ship condition, cell tube
Reason system 3 is in dormancy period, and will not export the command signal.In this case, as previously described, sensor 1
The energy-saving mode will be placed in.In the energy-saving mode, as previously described, sensor 1 is not the shape for being constantly in suspend mode
State, but it is alternately at wake-up period and dormancy period, and detection and threshold decision are carried out in wake-up period, if it is determined that
Detected value when wake-up period is more than that threshold value, the wake-up output section 105 of sensor 1 or wireless transmission and receiving module 1010 will be to
Battery management system 3 exports wake-up signal, so that battery management system 3 returns to working condition.In this way, sensor 1 can
With suspend mode autonomous in the case where low-power consumption, autonomous revival, independently external system is waken up and wakes up, so as to lower function
Consumption realizes monitoring promptly and accurately.
It is called out in the wake-up output section 105 of sensor 1 or wireless transmission and receiving module 1010 to the output of battery management system 3
When awake signal, as previously mentioned, it is described to check whether order receiving unit 103 or wireless transmission and receiving module 1010 receive
Command signal.Once detecting that order receiving unit 103 or wireless transmission and receiving module 1010 receive the command signal, i.e.,
Confirmation battery management system 3 has been waken up, then sensor stops exporting the wake-up signal.
Preferably, whether will and/or have occurred and that the sensor 1 of thermal runaway is pressure sensing in battery pack for monitoring
Device, the pressure sensor are used to monitor the gas pressure in battery pack.The excellent of thermal runaway is monitored using monitoring gas pressure
Point is, inside battery pack, the conduction of gas pressure is almost without delay, therefore can rapidly and accurately monitor may hair
Raw thermal runaway.In the case where sensor 1 is pressure sensor, the initial value of the threshold value can be redefined for making a reservation for
Value.The predetermined value for example can be standard atmospheric pressure value and determine amplitude and/or factory when atmospheric value and determine amplitude
The sum of.The judgement amplitude can be chosen according to allowing to deviate normal degree, for example, be selected as 10KPa, 20KPa, 30KPa,
40KPa, 50KPa or any other suitable value.As previously mentioned, the threshold value can be according to the variation timing of environmental pressure
It updates.For example, the threshold value is updated to current atmospheric pressure at predetermined time intervals in the wake-up period of the energy-saving mode
The sum of force value and judgement amplitude.The current atmospheric pressure force value can be detected by sensing element 101 or can be according to height above sea level
The factors such as degree are calculated.Preferably, as front had been discussed, the threshold value can also be according to sensor 1 in revival shape
The rate of change of detected pressure value is updated under state.In this way, even if automobile is in height above sea level or atmospheric pressure
It is transported or by use, also can more accurately monitor the thermal runaway that may occur, avoid reporting by mistake and leak in the place of variation
Report.As previously described, sensor here is also not necessarily limited to pressure sensor, but can be such as temperature sensor, electric current biography
The sensor of any other type such as sensor, voltage sensor, smoke detectors.
Preferably, battery management system 3 is also provided with for receiving wireless transmission and receiving module 1010 issued
The radio receiver of checking signal with check code, so that the failure to sensor diagnoses.Preferably, battery management
System 3 can also be equipped with for receiving detection signal output section 104 and/or wake up that output section 105 sends has check code
The device of checking signal, so that the failure to sensor diagnoses.
Although it have been described that the example embodiment of the disclosure, it will be understood by those skilled in the art that at this
A variety of variations can be carried out in the case where not departing from spirit and scope of the present disclosure in matter to the example embodiment of the disclosure and are changed
Become.Therefore, all changes and change are all contained in the protection scope of the disclosure defined by claim.The disclosure is by adding
Claim limit, and the equivalent of these claims is also included.
Claims (17)
1. a kind of sensor, the sensor includes sensing element and controller, and the sensing element is connected with controller, special
Sign is that the controller is configured so that, when sensor receives command signal, the controller is in sensor
Normal mode of operation, when sensor does not receive command signal, the controller makes sensor be in energy-saving mode,
Wherein, in the normal mode of operation, the sensor is persistently output to the outside opposite with the testing result of sensor
The detection signal answered, and
Wherein, in the energy-saving mode, the sensor is alternately at wake-up period and dormancy period, in the energy saving mould
In the wake-up period of formula, sensor is detected and will test end value and is compared with a threshold value, is tied in the detection
When fruit value is more than the threshold value, the sensor is output to the outside wake-up signal, in the dormancy period of the energy-saving mode
In, the sensor dormancy.
2. sensor according to claim 1, which is characterized in that the sensor is pressure sensor, force snesor, temperature
Spend sensor, voltage sensor, current sensor and/or smoke detectors.
3. sensor according to claim 1 or 2, which is characterized in that the sensor further includes order receiving unit, detection
Signal output section and wake up output section, the order receiving unit, the detection signal output section and the wake-up output section with
The controller is connected, and the order receiving unit is configured for receiving the command signal, the detection signal output section
It is configured for exporting the detection signal from the controller, the wake-up output section is configured for output and comes
From the wake-up signal of the controller.
4. sensor according to claim 1 or 2, which is characterized in that the sensor further includes wireless transmission and reception
Module, the wireless transmission and receiving module are configured for receiving the command signal in a manner of wireless telecommunications, with nothing
The mode of line communication is exported the detection signal from the controller and is exported in a manner of wireless telecommunications from described
The wake-up signal of controller.
5. sensor according to claim 1 or 2, which is characterized in that in the wake-up period of the energy-saving mode,
The threshold value is updated at predetermined time intervals.
6. sensor according to claim 1 or 2, which is characterized in that in the wake-up period of the energy-saving mode,
The rate of change of testing result and/or testing result that the threshold value is detected according to the sensor at predetermined time intervals is by more
Newly.
7. sensor according to claim 1 or 2, which is characterized in that the sensor is configured to be output to the outside
It checks whether sensor receives the command signal while wake-up signal, stops if receiving the command signal
Only export the wake-up signal.
8. sensor according to claim 3, which is characterized in that the sensor is configured so that the detection signal
And/or the wake-up signal can be measured by the controller, to make sensor to the detection signal and/or the wake-up
Signal and/or fault diagnosis is carried out to the detection signal output section and/or the wake-up output section.
9. sensor according to claim 4, which is characterized in that the wireless transmission and receiving module are configured to
It is sent out checking signal.
10. sensor according to claim 1 or 2, which is characterized in that the sensing element and the controller are packed
In the shell of sensor.
11. sensor according to claim 1 or 2, which is characterized in that the sensor is configured to be output to the outside
Normal mode of operation is automatically switched to while the wake-up signal.
12. sensor according to claim 1 or 2, which is characterized in that the duration of the wake-up period is 5 milliseconds
To 50 milliseconds, the duration of the dormancy period is 300 milliseconds to 1000 milliseconds.
13. a kind of battery module, which is characterized in that the battery module includes:
Battery pack；And
Sensor according to any one of claim 1 to 12, the sensor are used to monitor the state of battery pack.
14. a kind of battery management component, which is characterized in that the battery management component includes:
Battery management system；And
Sensor according to any one of claim 1 to 12, the sensor are used to monitor the state of battery, wherein
The command signal from the battery management system, and the wake-up signal be exported to the battery management system with
Just the battery management system is waken up.
15. battery management component according to claim 14, which is characterized in that the battery management system has for connecing
Receive the device of the checking signal from sensor.
16. a kind of electric car, which is characterized in that the electric car includes:
Battery pack；
Battery management system；And
According to claim 1, to sensor described in any one of 12, the sensor is used to monitor the state of battery pack,
In, the command signal is from the battery management system, and the wake-up signal is exported to the battery management system
System is to wake up the battery management system.
17. battery management component according to claim 16, which is characterized in that the battery management system has for connecing
Receive the device of the checking signal from sensor.
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| CN201822021659.1U CN209181813U (en) | 2018-12-03 | 2018-12-03 | Sensor, battery module, battery management component and electric car |
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|---|---|---|---|
| CN201822021659.1U CN209181813U (en) | 2018-12-03 | 2018-12-03 | Sensor, battery module, battery management component and electric car |
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| CN209181813U true CN209181813U (en) | 2019-07-30 |
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| CN109596158A (en) * | 2018-12-03 | 2019-04-09 | 森萨塔科技（常州）有限公司 | Sensor and monitoring method using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109596158A (en) * | 2018-12-03 | 2019-04-09 | 森萨塔科技（常州）有限公司 | Sensor and monitoring method using the same |
| CN110635182A (en) * | 2019-09-06 | 2019-12-31 | Oppo广东移动通信有限公司 | Battery thermal runaway early warning method and device, electronic equipment and storage medium |
| CN113619389A (en) * | 2020-05-08 | 2021-11-09 | 北京新能源汽车股份有限公司 | Early warning method and early warning system for thermal runaway of power battery and vehicle |
| US11588192B2 (en) | 2020-09-15 | 2023-02-21 | Amphenol Thermometrics, Inc. | Thermal runaway detection system for batteries within enclosures |
| US11942613B2 (en) | 2020-09-15 | 2024-03-26 | Amphenol Thermometrics, Inc. | Thermal runaway detection system for batteries within enclosures |
| CN112731169A (en) * | 2020-12-22 | 2021-04-30 | 上汽大众汽车有限公司 | All-weather monitoring system and method for thermal runaway of power battery |
| CN112731169B (en) * | 2020-12-22 | 2022-08-23 | 上汽大众汽车有限公司 | All-weather monitoring system and method for thermal runaway of power battery |
| CN114670704A (en) * | 2021-01-29 | 2022-06-28 | 北京新能源汽车股份有限公司 | Control method and device of power battery pack and electric automobile |
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