CN106159363B - A kind of novel electric automobile battery box with multi-functional, alarming - Google Patents

A kind of novel electric automobile battery box with multi-functional, alarming Download PDF

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Publication number
CN106159363B
CN106159363B CN201510204776.XA CN201510204776A CN106159363B CN 106159363 B CN106159363 B CN 106159363B CN 201510204776 A CN201510204776 A CN 201510204776A CN 106159363 B CN106159363 B CN 106159363B
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China
Prior art keywords
main controller
sensor
battery pack
communication interface
battery
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Expired - Fee Related
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CN201510204776.XA
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Chinese (zh)
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CN106159363A (en
Inventor
李志农
刘立明
杨澜
曹万友
常林荣
卢祥军
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ORIGINAL ENERGY TECHNOLOGY BEIJING Inc
Original Energy Technology Tianjin Co ltd
Nanchang Hangkong University
Original Assignee
ORIGINAL ENERGY TECHNOLOGY BEIJING Inc
Original Energy Technology Tianjin Co ltd
Nanchang Hangkong University
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Priority to CN201510204776.XA priority Critical patent/CN106159363B/en
Publication of CN106159363A publication Critical patent/CN106159363A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies relating to charging of electric vehicles
    • Y02T90/16Information or communication technologies improving the operation of electric vehicles

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  • Emergency Alarm Devices (AREA)
  • Secondary Cells (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The present invention relates to electric vehicle engineering more particularly to a kind of electric automobile battery boxes with warning function.The electric automobile battery box, it include: main controller, battery pack, voltage and current collector, temperature sampler, displacement acquisition sensor, smoke collection sensor, humidity collection sensor, CAN communication interface, wireless transceiver, high-power switch tube/relay, balance module and power output port, main controller is connected with battery pack, voltage and current collector, temperature sampler, displacement acquisition sensor module, smoke collection sensor, humidity collection sensor, CAN communication interface, wireless transceiver, balance module and high-power switch tube/relay respectively;High-power switch tube/relay is connected with power output port and battery pack respectively;The battery pack is connected with balance module.The present invention, which is realized, effectively reduces injury of the fire to pedestrian and vehicle to ensure motor vehicles and the safety of pedestrian using a variety of means of communications.

Description

A kind of novel electric automobile battery box with multi-functional, alarming
Technical field
The present invention relates to electric vehicle engineerings, more particularly to a kind of novel batteries of electric automobile with multi-functional, alarming Case.
Background technique
With the reduction of the energy and the progress of science and technology, the traditional energy automobile of oil consumption can gradually be replaced by electric car.When Under, no matter external vehicle enterprise or domestic vehicle are looked forward to, all in positive Development of EV.High speed electric automobile and low-speed electronic automobile by It is small in environmental pollution, noise is low and structure designs simple advantage, have a vast market.
Relative to the vehicles of traditional approach, new energy battery has higher security risk when in use, first is that battery The factor of itself may cause the leakage, deformation, on fire, even explosion etc. of single battery due to improper use;Another party Face, due to when in use, because of irresistible extraneous factor, such as hitting, a large amount of rainwater, being possible to that battery spontaneous combustion can be caused Or the safety problems such as on fire.
Current electric car is to be made not enough in place, especially in terms of the alarm to battery spontaneous combustion or the safety problems such as on fire It is will not near electric car pedestrian and vehicle have any warning, therefore there are drawbacks.Many drivers and pedestrians are not because Know that spontaneous combustion has occurred in the battery of electric car, and lose the chance of escape and rescue, causes unnecessary personnel's property Loss.
Summary of the invention
The present invention is high for electric car voltage currently on the market, will not be near the electric car when causing danger Pedestrian or vehicle have alarm function, propose a kind of novel electric automobile battery box with multi-functional, alarming.
A kind of novel electric automobile battery box with multi-functional, alarming, comprising: main controller, battery pack, voltage and current are adopted It is storage, temperature sampler, displacement acquisition sensor, smoke collection sensor, humidity collection sensor, CAN communication interface, wireless Transceiver, high-power switch tube/relay, balance module and power output port, wherein
The main controller respectively with battery pack, voltage and current collector, temperature sampler, displacement acquisition sensor module, Smoke collection sensor, humidity collection sensor, CAN communication interface, wireless transceiver, balance module and high-power switch tube/ Relay is connected;
High-power switch tube/the relay is connected with power output port and battery pack respectively;
The battery pack is connected with balance module.
The displacement acquisition sensor is fixedly mounted on the box outer surface of electric automobile battery box, for detecting deformation Admissible rated limit whether is had reached, when the maximum limit is reached, very big probability is had and destroys battery, cause security risk.
The humidity collection sensor is mounted on electric automobile battery box inner bottom, for detecting electric automobile battery box Whether internal air-tightness is intact.
Beneficial effects of the present invention: the present invention utilizes wireless transceiver, realizes using a variety of means of communications, more extensively Be that user, neighbouring pedestrian and vehicle provide warning message, and warning message is extremely accurate, thus ensured motor vehicles with And the safety of pedestrian, effectively reduce injury of the fire to pedestrian and vehicle.Meanwhile the configuration of the present invention is simple, production cost is low, It is easy for installation easy to spread.
Detailed description of the invention
Fig. 1 is general module structural schematic diagram of the invention;
Fig. 2 is the circuit diagram of the CAN communication interface of one embodiment of the invention;
Fig. 3 is the circuit diagram of the temperature sampler of one embodiment of the invention;
Fig. 4 is the circuit diagram of the wireless transceiver of one embodiment of the invention;
Fig. 5 is the circuit diagram of the humidity collection sensor of one embodiment of the invention;
Fig. 6 is the circuit diagram of the smoke collection sensor of one embodiment of the invention;
Fig. 7 is overall appearance figure of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, is clearly and completely retouched to the technical solution in embodiment It states.
As shown in Figure 1, a kind of novel electric automobile battery box with multi-functional, alarming, comprising: main controller, battery pack, Voltage and current collector, temperature sampler, displacement acquisition sensor, smoke collection sensor, humidity collection sensor, CAN are logical Believe interface, wireless transceiver, high-power switch tube/relay, balance module and power output port, wherein
The main controller respectively with battery pack, voltage and current collector, temperature sampler, displacement acquisition sensor module, Smoke collection sensor, humidity collection sensor, CAN communication interface, wireless transceiver, balance module and high-power switch tube/ Relay is connected;
High-power switch tube/the relay is connected with power output port and battery pack respectively;
The battery pack is connected with balance module.
The displacement acquisition sensor is fixedly mounted on the box outer surface of electric automobile battery box, for detecting deformation Admissible rated limit whether is had reached, when the maximum limit is reached, very big probability is had and destroys battery, cause security risk.When When humidity is larger, possible battery air tightness is not good, has water to enter harmful to battery.
Voltage and current collector is used to acquire the voltage swing and size of current of upper each single battery of battery pack, and will Collected voltage value and current value send main controller to handle.Temperature sampler is used to acquire the temperature in battery pack, and will acquisition To temperature value send main controller to handle.Displacement acquisition sensor is fixedly mounted on the corresponding position of battery case, for detecting electricity Whether pond case receives the effect of external force and sends out and saved deformation.Displacement acquisition sensor equally also can be collected related data Main controller is sent to handle.Smoke collection sensor can acquire the air of surrounding, and when smog occurs, smoke sensor device can give main controller Send smog alarm signal.Humidity alarm sensor is used to acquire the humidity in battery case, and collected humidity size is sent out Give main controller.The disconnection of high-power switch tube/relay and closure by main controller control.It can be with by CAN communication interface It is communicated with other controllers of electric car.Wireless transceiver can be communicated by wireless with user and neighbouring pedestrian.
Main controller can also believe the voltage value received, current value, temperature value, shift value, smoke signal and humidity value It number is analyzed and processed, and formulates fault level according to these signal values received.The fault level ratio locating for the failure When lower, main controller can export high level to high-power switch tube/relay, so that power output port and battery pack be made to connect It is logical, at this moment electric energy can by power output port powering load, therefore when failure rank is lower, system only prompt therefore Hinder reason, does not cut off power supply.When failure is lower, corresponding failure can also be sent to by display screen by CAN communication interface It has been shown that, it is for reference, ensure that the inherently safe of user, wireless transceiver pass through the approach such as short message/wechat/broadcast, Relevant fault alarm information can also be sent to user/neighbouring pedestrian/neighbouring vehicle, obtain dependent failure information;When event When barrier grade is relatively high, when main controller is to high-power switch tube/relay output low level, high-power switch tube/relay It disconnects, power output port is not connected to battery pack, therefore electric energy cannot be by power output port powering load, to cut Break the output of electric energy, has improved safety.Meanwhile fault-signal is sent to by display screen by CAN communication interface and is shown, it mentions Show that user hastens to leave the electric car, what wireless transceiver can leave to user and neighbouring pedestrian and transmission as early as possible simultaneously Fault alarm information.Car owner not when, the people for receiving information can alarm, and in this way can be minimized loss.
Balance module makes all single batteries should be made to be held in same state-of-charge when charge and discharge, is conducive to extend The service life of battery.
Since wireless transceiver can be wireless blue tooth transceiver/wireless GPRS transceiver/wireless WIFI transceiver, use A variety of means of communications more easily can be communicated preferably, at the same car owner not when, when electric car break down when, Both car owner can be notified in time, while can also notify the pedestrian and vehicle near the electric car at the first time.Therefore it reduces The incidence of accident, additionally it is possible to the significantly more efficient safety of life and property for ensureing broad masses.
Such as the circuit diagram for the CAN communication interface that Fig. 2 is one embodiment of the invention, two are provided in this embodiment Road CAN communication interface, meanwhile, the present invention in CAN communication interface chip we use high-speed CAN bus transceiver TJA1040, should Chip complies fully with ISO11898 standard, and the speed of the chip may be up to 1Mbaud, and electromagnetic radiation EME is very low.Differential Receiver have in wider common mode range can electromagnetism interference EMI, the transceiver in not power-up state can be detached from from bus Zero load, input stage meet the device of 3.3V and 5V.If using division termination voltage source can stablize recessive bus level into One step improves EME, at least can connect 110 nodes.Consuming the extremely low standby mode of electric current has through bus wake-up remotely Function, send the dominant timeout feature of data TXD, bus pin is protected under the transient environmental of automobile, prevents bus Pin and pin SPLIT are to battery and shorted to earth.The resistance for having added two 60 ohm in circuit simultaneously, constitutes 120 Europe The terminal resistance of nurse, to eliminate the signal reflex in communication cable.
It is illustrated in figure 3 the circuit diagram of the temperature sampler of one embodiment of the invention;In this embodiment, I Using DS18B20 chip as our temperature sampler it is multiple because the chip holds multiple spot networking function DS18B20 can be connected in parallel on only single line, realized multi-point temperature measurement, can be saved the I/O port of single-chip microcontroller.In the present embodiment, We have used three DS18B20 chips, while having used tri- I/O interfaces of P22, P23 and P24 of three main controllers, in main controller It, can be only with one in three I/O interfaces of main controller while this three DS18B20 cores in parallel in the case that interface is nervous Piece realizes temperature acquisition.
It is illustrated in figure 4 the circuit diagram of the wireless transceiver of one embodiment of the invention, in the present embodiment, we Using Nrf905 chip, which can freely work in the ISM band of 2.4GHz, and first choice is not necessarily to China Radio application frequency range, therefore alarm signal can ought be directly transmitted by the chip to driver, neighbouring row in the event of failure People and vehicle send alarm signal, to avoid unnecessary loss.Wireless transceiver can also be using Botong in the present invention NFC/ bluetooth/WiFi/FM function combined chip, also can integrate the wireless GPRS transceiver of voice module, can pass through broadcast Or the functions such as short message are alarmed.Because previous alarm is limited to the pedestrian and vehicle that do not pass by one's way driver's warning note There is warning function, and wireless transceiver of the invention can be to the pedestrian to pass by one's way and car alarming effect, therefore can send out accident Raw rate drops to recently.
As shown in figure 5, the circuit diagram of the humidity collection sensor for one embodiment of the invention, of the invention this DHT11 chip is used in embodiment, which can acquire the humidity condition in battery case, when avoiding humidity larger, driver It does not know and causes unnecessary loss.
As shown in fig. 6, the circuit diagram of the smoke collection sensor of one embodiment of the invention, uses in the present invention QM-N10 accesses the I/O port of main controller after UIA amplifier comparison circuit as smoke collection chip, and wherein LED is used to report It is alert.
The voltage and current collector of one embodiment of the present of invention uses the LTC6804-2 chip of linear company, the core Piece can acquire the voltage and current of the single battery on 12 tunnels, and the balance module of one embodiment of the present of invention is using Linear's LTC3300 balancing chip realizes active equalization.Main controller of the invention uses the PLC1788 chip of NXP.Displacement of the invention Sensor mainly uses stress section to form, which has small in size, light-weight, high impedance, low-power consumption, strong antijamming capability A variety of encapsulating structures, a variety of connection types, have a wide range of application.
As shown in fig. 7, being overall appearance figure of the invention.The configuration of the present invention is simple, production cost is low, using a variety of communications Means can be widely more user, neighbouring pedestrian and vehicle provide fire alarm information, and warning message is extremely quasi- Really.
It is made of the present invention and is found to have good warning effect through experimental test, it can be to avoid unnecessary loss.
Combining most preferred embodiment above, invention has been described, but the invention is not limited to implementations disclosed above Example, and various modifications, equivalent combinations according to the essence of the present invention should be covered.

Claims (1)

1. a kind of novel electric automobile battery box with multi-functional, alarming characterized by comprising main controller, battery pack, electricity Current voltage collector, temperature sampler, displacement acquisition sensor, smoke collection sensor, humidity collection sensor, CAN communication Interface, wireless transceiver, high-power switch tube/relay, balance module and power output port, wherein
The main controller respectively with battery pack, voltage and current collector, temperature sampler, displacement acquisition sensor module, smog Acquire sensor, humidity collection sensor, CAN communication interface, wireless transceiver, balance module and high-power switch tube/relay Device is connected;
High-power switch tube/the relay is connected with power output port and battery pack respectively;
The battery pack is connected with balance module;
The circuit of the CAN communication interface: having two-way CAN communication interface, and CAN communication interface is received and dispatched using high-speed CAN bus Device TJA1040, and be connected directly with main controller, while having added two 60 ohm of resistance in circuit, constitute 120 ohm Terminal resistance, to eliminate the signal reflex in communication cable;And recessive bus can be stablized using division termination voltage source Level further improves electromagnetic radiation EME, and the extremely low standby mode of consumption electric current, which has, wakes up long-range function by bus, sends out The dominant timeout feature of data TXD is sent, bus pin is protected under the transient environmental of automobile, prevents bus pin and pin SPLIT is to battery and shorted to earth;
The circuit of the temperature sampler: using there is the DS18B20 chip of multiple spot networking function as temperature sampler, DS18B20 is connected with the I/O interface of main controller respectively, while parallel connection DS18B20 chip realizes multi-point temperature measurement, saves single-chip microcontroller I/O port;
The circuit of the wireless transceiver: when in the event of failure, alarm signal can be directly transmitted by the chip;
The circuit of the humidity collection sensor: the humidity condition in acquisition battery case;
The circuit of the smoke collection sensor: using QM-N10 as smoke collection chip, pass through UIA amplifier comparison circuit Afterwards, the I/O port of main controller is accessed, wherein LED is used to alarm.
CN201510204776.XA 2015-04-28 2015-04-28 A kind of novel electric automobile battery box with multi-functional, alarming Expired - Fee Related CN106159363B (en)

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108110175A (en) * 2017-12-14 2018-06-01 山东星火科学技术研究院 A kind of new energy Li-ion batteries piles using Internet surveillance security
CN108327553A (en) * 2018-01-29 2018-07-27 新日(无锡)发展有限公司 A kind of power battery management system for electric vehicle
CN108944503A (en) * 2018-06-20 2018-12-07 苏州工业园区职业技术学院 A kind of energy management system of electric car
CN109159717A (en) * 2018-08-31 2019-01-08 贵阳学院 A kind of charging system for electric automobile
CN110962685A (en) * 2019-12-06 2020-04-07 江西博能上饶客车有限公司 Battery management system for electric motor coach
CN114665176A (en) * 2022-03-20 2022-06-24 中国第一汽车股份有限公司 Deformation monitoring device for battery pack, battery pack and monitoring method

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