CN108418184A - discharge detection circuit and system - Google Patents
discharge detection circuit and system Download PDFInfo
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- CN108418184A CN108418184A CN201810340485.7A CN201810340485A CN108418184A CN 108418184 A CN108418184 A CN 108418184A CN 201810340485 A CN201810340485 A CN 201810340485A CN 108418184 A CN108418184 A CN 108418184A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0833—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for electric motors with control arrangements
Abstract
The present invention provides discharge detection circuit and systems, are related to vehicle technology field, wherein the discharge detection circuit includes：The discharge condition acquisition module being sequentially connected, break-make control module of discharging and motor drive module, discharge condition acquisition module is also connected with battery cathode, motor drive module is also connected with anode, motor drive module provides discharge current for the motor of vehicle, so that vehicle movement, simultaneously, discharge condition acquisition module acquires discharge current, and discharge current is sent to control circuit, control circuit detects whether discharge current exceeds threshold value, and discharge off signal is generated when discharge current exceeds threshold value, break-make control module of discharging is when receiving discharge off signal, disconnect the connection between anode and battery cathode, battery is disconnected to connect with the major loop of load, pass through the monitoring to discharge current, it being capable of safety of the support vehicles in driving process of discharging.
Description
Technical field
The present invention relates to vehicle technology field more particularly to discharge detection circuit and systems.
Background technology
In recent years, the application of electric bicycle is more and more extensive, the reason is that, electric bicycle is not only simple in structure, just
It is operated in user, moreover, lighter in weight, user drives light easy to operate.In addition, the speed of electric bicycle is suitable
Slowly, facilitate traveling on street quotient area and other places, price is relatively low, and user is willing to accept.In summary advantage, electric bicycle exist
China's both urban and rural area rapid proliferation becomes one of the main walking-replacing tool of broad masses' trip.
But with the increase of electric bicycle quantity in the market, electric bicycle safety accident is also frequently occurring.It is special
It is not the electrical problem of electric bicycle, i.e., electric bicycle often will appear electric fault in driving process of discharging, and burn electricity
Pond even causes fire when serious, heavy losses is caused to people's lives and properties.
To sum up, problem safe in driving process of discharging about that can not ensure electric bicycle at present there is no effective
Solution.
Invention content
In view of this, the embodiment of the present invention has been designed to provide discharge detection circuit and system, discharged by being arranged
State acquisition module, electric discharge break-make control module and motor drive module etc., improve the monitoring to discharge current, to improve
Safety of the vehicle in driving process of discharging.
In a first aspect, an embodiment of the present invention provides discharge detection circuits, including：Discharge condition acquisition module, electric discharge are logical
Disconnected control module and motor drive module；
The discharge condition acquisition module, the electric discharge break-make control module and the motor drive module are sequentially connected
It connects, the discharge condition acquisition module is also connected with battery cathode, and the motor drive module is also connected with anode；
The motor drive module, for providing discharge current for the motor of vehicle, so that vehicle movement；
The discharge condition acquisition module, for acquiring the discharge current, and, the discharge current is sent to described
Control circuit；
The control circuit, for detecting whether discharge current exceeds threshold value, and, when the discharge current exceeds the threshold
Discharge off signal is generated when value；
The electric discharge break-make control module, for when receiving the discharge off signal, disconnecting anode and electricity
Connection between the cathode of pond.
With reference to first aspect, an embodiment of the present invention provides the first possible embodiments of first aspect, wherein institute
It includes the first discharge resistance and the first discharge capacity to state discharge condition acquisition module, and the motor drive module is put with described first
One end of resistance is connected, the other end of first discharge resistance ground connection, and first discharge capacity is connected in parallel on described the
The both ends of one discharge resistance, first discharge capacity are used for filtering clutter, by being put described in first discharge resistance acquisition
Electric current.
With reference to first aspect, an embodiment of the present invention provides second of possible embodiments of first aspect, wherein institute
It includes the second discharge resistance, the first electric discharge self-recovery fuse, the first electric discharge field-effect tube, first to state electric discharge break-make control module
Discharge diode, third discharge resistance, the 4th discharge resistance, the 5th discharge resistance；
One end of second discharge resistance is connected with the control circuit, the other end of second discharge resistance with
The drain electrode of the first electric discharge field-effect tube is connected, source electrode and first electric discharge, three poles of the first electric discharge field-effect tube
The emitter of pipe is connected, and the collector of first discharge diode is connected with the grid of the first electric discharge field-effect tube
It connects, the collector of first discharge diode is connected with one end of the third discharge resistance, the third discharge resistance
The other end be connected to the motor and connect, the base stage of first discharge diode is connected with one end of the 4th discharge resistance,
The other end of 4th discharge resistance is connected with one end of the 5th discharge resistance, the 4th discharge resistance it is another
End is connected with the control circuit, and the other end of the 5th discharge resistance is connected with the feeder ear of the control circuit；
When receiving the discharge off signal, first discharge diode is cut 4th discharge resistance
Only, another terminal voltage of the third discharge resistance is zero；
One end of the first electric discharge self-recovery fuse is connected with battery cathode, the first electric discharge self- recoverage insurance
The other end of silk is connected with the other end of the second discharge resistance, when the first electric discharge field-effect tube cut-off, the electric discharge
Electric current reaches second discharge resistance through the first electric discharge self-recovery fuse.
With reference to first aspect, an embodiment of the present invention provides the third possible embodiments of first aspect, wherein also
Including auxiliary power module, one end of the auxiliary power module is connected with anode, the auxiliary power module it is another
One end is connected with battery cathode；
The auxiliary power module is converted the voltage of anode twice, respectively obtains first voltage and the second electricity
Pressure, and, the first voltage is that the driving of switching device is powered, and the second voltage is powered for the control circuit.
The third possible embodiment with reference to first aspect, an embodiment of the present invention provides the 4th kind of first aspect
Possible embodiment, wherein the auxiliary power module include first partial pressure triode, second partial pressure triode, first point
Piezoresistance, the second divider resistance, the first voltage-stabiliser tube and the second voltage-stabiliser tube；
One end of first divider resistance is connected with anode, the other end of first divider resistance with it is described
The base stage of first partial pressure triode is connected, and the collector of the first partial pressure triode is connected with anode, and described the
One end of one voltage-stabiliser tube is connected with battery cathode, the base that the other end of first voltage-stabiliser tube divides triode with described first
Pole is connected, and the emitter of the first partial pressure triode is connected with one end of second divider resistance, described second point
The other end of piezoresistance is connected with the base stage of the second partial pressure triode, the emitter of the second partial pressure triode and institute
The one end for stating the second voltage-stabiliser tube is connected, and the other end of second voltage-stabiliser tube is connected with the collector of second voltage-stabiliser tube
It connects；
First voltage-stabiliser tube, for dividing triode burning voltage for described first；
Second voltage-stabiliser tube, for dividing triode burning voltage for described second；
The emitter voltage-to-ground of the first partial pressure triode is the first voltage；
The emitter voltage-to-ground of the second partial pressure triode is the second voltage.
The third possible embodiment with reference to first aspect, an embodiment of the present invention provides the 5th kind of first aspect
Possible embodiment, wherein further include battery temperature detection module, the battery temperature detection module is for acquiring battery
Temperature signal, and, the temperature signal is sent to the control circuit；
The control circuit, for generating heat alarm when the temperature signal exceeds temperature threshold；
The battery temperature detection module includes thermistor socket, thermistor plug and thermistor, the temperature-sensitive
One end of resistance socket is grounded, and the other end of the thermistor socket connects the second voltage, the thermistor plug
It is connected into closed circuit with the thermistor；
When the thermistor is fitted on battery, when the temperature signal that the thermistor collects battery exceeds
Heat alarm is generated when temperature threshold.
With reference to first aspect, an embodiment of the present invention provides the 6th kind of possible embodiments of first aspect, wherein also
Including fault detection module, the fault detection module includes Fisrt fault resistance, Fisrt fault triode, three pole of the second failure
Pipe and failure diode, one end of the Fisrt fault resistance is connected with the control circuit, the Fisrt fault resistance it is another
One end is connected with the base stage of the Fisrt fault triode, the emitter ground connection of the Fisrt fault triode, and described first
The collector of failure triode is connected with the base stage of the second failure triode, the emitter of the second failure triode
It is connected with anode, the collector of the second failure triode is connected with the anode of the failure diode, described
The cathode of failure diode is connected with failure output terminal, and the Fisrt fault triode is NPN type triode, second event
Barrier triode is PNP type triode；
When the Fisrt fault resistance receives the fault-signal that the control circuit is sent out, by the Fisrt fault three
The collector clamper of pole pipe sends out failure to high level, the second failure triode and the failure diode current flow
Signal.
With reference to first aspect, an embodiment of the present invention provides the 7th kind of possible embodiments of first aspect, wherein also
Including the detection module that stops, the parking detection module disconnects anode and electricity when the speed for detecting vehicle is equal to zero
Connection between the cathode of pond, choked flow self-recovery fuse are powered for alarm.
Second of possible embodiment with reference to first aspect, an embodiment of the present invention provides the 8th kind of first aspect
Possible embodiment, wherein the first electric discharge field-effect tube can be replaced relay or silicon-controlled.
Second aspect, an embodiment of the present invention provides discharging detecting systems, including：Metal battery box, accumulator and as above
State any one of them discharging detection device；
The accumulator is connected with the discharging detection device；
The discharging detection device is detected for the use state to the accumulator；
The accumulator and the discharging detection device are both placed in inside the metal battery box；
The metal battery box, for the accumulator and the discharging detection device to be limited in the metal battery box
In internal space, and, it is the air outside the accumulator and discharging detection device isolation metal battery box.
Discharge detection circuit provided in an embodiment of the present invention and system, wherein the discharge detection circuit includes：Discharge condition
Acquisition module, electric discharge break-make control module and motor drive module, the connection relation between above-mentioned modules are as follows：Discharge shape
State acquisition module, electric discharge break-make control module and motor drive module be sequentially connected and connect, discharge condition acquisition module also with battery
Cathode is connected, and motor drive module is also connected with anode, i.e., is sequentially connected between anode and battery cathode
There are motor drive module, electric discharge break-make control module and discharge condition acquisition module.In use, motor drive module is used
In providing discharge current for the motor of vehicle, so that vehicle is moved, meanwhile, discharge condition acquisition module discharges for acquiring
Electric current, and discharge current is sent to control circuit, in this way, control circuit is used for detecting whether discharge current exceeds threshold value, need
It to be illustrated, above-mentioned threshold value is the maximum value for the discharge current that can bear in discharge loop, also, works as discharge current
Circuit evolving discharge off signal is controlled when beyond threshold value, in this way, electric discharge break-make control module is for receiving above-mentioned electric discharge
When termination signal, the connection disconnected between anode and battery cathode passes through above-mentioned place to terminate the discharge process of battery
Reason, strengthens the monitoring to discharge current, also, when discharge current exceeds threshold value, can in time by motor drive module and
Connection between anode disconnects, that is, disconnects battery and connected with the major loop of load, and then terminates battery and continue externally electric discharge,
To improve safety of the battery in discharge process.
Other features and advantages of the present invention will illustrate in the following description, also, partly become from specification
It obtains it is clear that understand through the implementation of the invention.The purpose of the present invention and other advantages are in specification, claims
And specifically noted structure is realized and is obtained in attached drawing.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 shows the connection figure for the discharge detection circuit that the embodiment of the present invention is provided；
Fig. 2 shows the circuit connection diagrams for the discharge detection circuit that the embodiment of the present invention is provided；
Fig. 3 shows the circuit connection diagram for the auxiliary power module that the embodiment of the present invention is provided；
Fig. 4 shows the circuit connection diagram for the battery temperature detection module that the embodiment of the present invention is provided.
Icon：1- discharge condition acquisition modules；2- electric discharge break-make control modules；3- motor drive modules.
Specific implementation mode
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Usually exist
The component of the embodiment of the present invention described and illustrated in attached drawing can be arranged and be designed with a variety of different configurations herein.Cause
This, the detailed description of the embodiment of the present invention to providing in the accompanying drawings is not intended to limit claimed invention below
Range, but it is merely representative of the selected embodiment of the present invention.Based on the embodiment of the present invention, those skilled in the art are not doing
The every other embodiment obtained under the premise of going out creative work, shall fall within the protection scope of the present invention.
Currently, the safety accident of the electric vehicles such as electric bicycle, Portable electric motor and electric motor is also frequently occurring.It is special
It is not that electric bicycle often will appear electric fault in driving process of discharging, also, in the process of moving can not effectively in time
Give first-aid measures, vehicle usually will appear serious damage phenomenon.
Based on this, an embodiment of the present invention provides discharge detection circuit and systems, are described below by embodiment.
Embodiment 1
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the discharge detection circuit that the present embodiment proposes specifically includes：Discharge condition acquires
Module, electric discharge break-make control module and motor drive module, above-mentioned discharge condition acquisition module, electric discharge break-make control module and electricity
Machine drive module, which is sequentially connected, to be connect, also, discharge condition acquisition module is also connected with battery cathode, motor drive module also with
Anode is connected, i.e., is connected with motor drive module, electric discharge break-make control in turn between anode and battery cathode
Module and discharge condition acquisition module.In use, motor drive module is used to provide discharge current for the motor of vehicle,
I.e. discharge current is supplied to the motor of vehicle, is passed through motor by discharge current later by anode flow direction motor drive module
Operating so that vehicle is moved, and by discharge condition acquisition module to acquire discharge current, also, discharge current is sent to
Control circuit, in this way, control circuit needs to illustrate, above-mentioned threshold value for detecting whether discharge current exceeds threshold value
Maximum value for the discharge current that can bear in discharge loop, also, when detecting that discharge current exceeds threshold value, control electricity
Road generates discharge off signal, in this way, electric discharge break-make control module is used for when receiving discharge off signal, disconnects motor and drives
Connection between dynamic model block and anode, and then the connection between anode and battery cathode is disconnected, terminate putting for battery
Electric process effectively prevents continuing to discharge when discharge process exception occurring the phenomenon that damaging vehicle.
Above-mentioned discharge condition acquisition module includes the first discharge resistance and the first discharge capacity, motor drive module and first
One end of discharge resistance is connected, and the other end ground connection of the first discharge resistance, the number of the first discharge resistance can be more here
A, the resistance value of the first discharge resistance can flexibly be set according to circuit conditions, and the first discharge capacity is connected in parallel on the first electric discharge electricity
The both ends of resistance, the first discharge capacity are used for filtering clutter, and discharge current is acquired by the first discharge resistance, i.e., from the first electric discharge electricity
Detection signal of the discharge current as control circuit is obtained in resistance, later the discharge current is made whether to exceed by control circuit
The judgement of threshold value needs to illustrate, and control circuit is to have place with what discharge condition acquisition module was used cooperatively here
The circuit unit of function is managed, control circuit generates discharge off signal when detecting that discharge current exceeds threshold value.
Above-mentioned electric discharge break-make control module includes：Second discharge resistance, the first electric discharge self-recovery fuse, the first electric discharge field
Effect pipe, the first discharge diode, third discharge resistance, the 4th discharge resistance, the 5th discharge resistance, between each component
Connection relation is：One end of second discharge resistance is connected with control circuit, the other end of the second discharge resistance and the first electric discharge
The drain electrode of field-effect tube is connected, and the source electrode of the first electric discharge field-effect tube is connected with the emitter of the first discharge diode, the
The collector of one discharge diode is connected with the grid of the first electric discharge field-effect tube, the collector of the first discharge diode and the
One end of three discharge resistances is connected, and the other end of third discharge resistance, which is connected to the motor, to be connect, the base stage of the first discharge diode
It is connected with one end of the 4th discharge resistance, the other end of the 4th discharge resistance is connected with one end of the 5th discharge resistance, the
The other end of four discharge resistances is connected with control circuit, and the other end of the 5th discharge resistance is connected with the feeder ear of control circuit
It connects.
In use, the 4th discharge resistance is when receiving discharge off signal, the cut-off of the first discharge diode, i.e.,
First discharge diode is in off state, and another terminal voltage of third discharge resistance is zero, that is, the electric current for supplying motor is zero, eventually
Stop battery motor is continued to power.
Also, one end of the first electric discharge self-recovery fuse is connected with battery cathode, the first electric discharge self-recovery fuse
The other end be connected with the other end of the second discharge resistance, when first electric discharge field-effect tube cut-off when, discharge current is through first
Self-recovery fuse of discharging reaches the second discharge resistance.I.e. during vehicle parking, by first electric discharge self-recovery fuse Lai
Size of current in observation circuit, compared with by the first electric discharge field-effect tube come the size of current in observation circuit, first puts
The current value that electric self-recovery fuse can be born is smaller, the variation of electric current in reply circuit that can be very sensitive, to have
Effect, which avoids the excessive situation of electric current, to cause damages to vehicle.
In addition, further including auxiliary power module, one end and the anode phase of auxiliary power module in discharge detection circuit
Connection, the other end of auxiliary power module is connected with battery cathode, i.e., auxiliary power module is be connected to battery both ends another
One circuit.Auxiliary power module is converted the voltage of anode twice, i.e., is divided twice, respectively obtains first
Voltage and second voltage need to illustrate, and first voltage is usually 9V to 12V, and second voltage is usually 3.3V or 5V,
Also, the driving that first voltage is switching device is powered, and second voltage in order to control power by circuit, it should be noted that control circuit
In MCU and peripheral auxiliary circuits be all powered by second voltage.
Specifically, auxiliary power module includes the first partial pressure triode, the second partial pressure triode, the first divider resistance, the
Two divider resistances, the first voltage-stabiliser tube and the second voltage-stabiliser tube.One end of first divider resistance is connected with anode, the first partial pressure
The other end of resistance is connected with the base stage of the first partial pressure triode, and the collector of the first partial pressure triode is connected with anode
It connects, one end of the first voltage-stabiliser tube is connected with battery cathode, the base stage of the other end of the first voltage-stabiliser tube and the first partial pressure triode
It is connected, the emitter of the first partial pressure triode is connected with one end of the second divider resistance, the other end of the second divider resistance
It is connected with the base stage of the second partial pressure triode, the emitter of the second partial pressure triode is connected with one end of the second voltage-stabiliser tube,
The other end of second voltage-stabiliser tube is connected with the collector of the second voltage-stabiliser tube, and the first voltage-stabiliser tube is used to divide triode for first steady
Constant voltage, the second voltage-stabiliser tube are used for as the second partial pressure triode burning voltage, the emitter voltage-to-ground of the first partial pressure triode
Emitter voltage-to-ground for first voltage, the second partial pressure triode is second voltage.Partial pressure is realized by resistance, and it is logical
Overvoltage conversion chip is compared to carry out partial pressure, is divided by resistance easier to be flexible.
In addition, further include battery temperature detection module in above-mentioned discharge detection circuit, during use, battery temperature detection
Module is used to acquire the temperature signal of battery, also, collected temperature signal is sent to control circuit and is handled, it
Afterwards, control circuit is used to generate heat alarm when temperature signal exceeds temperature threshold, to warn user to repair
Deng.Specific component is configured to：Battery temperature detection module includes thermistor socket, thermistor plug and temperature-sensitive electricity
Resistance, wherein one end of thermistor socket is grounded, and the other end of thermistor socket connects second voltage, thermistor plug
It is connected into closed circuit with thermistor, it, i.e., will when needing to carry out battery temperature detection when thermistor is fitted on battery
Thermistor is plugged on thermistor socket, convenient, flexible, in this way, when the temperature signal that thermistor collects battery exceeds
Heat alarm is generated when temperature threshold, to play forewarning function, avoids the excessively high caused battery of battery temperature even
Vehicle catches fire the generation of phenomenon.
In addition, discharge detection circuit further includes fault detection module, fault detection module includes Fisrt fault resistance, first
Failure triode, the second failure triode and failure diode, one end of Fisrt fault resistance are connected with control circuit, the first event
The other end of barrier resistance is connected with the base stage of Fisrt fault triode, the emitter ground connection of Fisrt fault triode, the first event
The collector of barrier triode is connected with the base stage of the second failure triode, the emitter and anode of the second failure triode
It is connected, the collector of the second failure triode is connected with the anode of failure diode, the cathode and failure of failure diode
Output end is connected, and Fisrt fault triode is NPN type triode, and the second failure triode is PNP type triode.It was using
Cheng Zhong needs to illustrate when Fisrt fault resistance receives the fault-signal that control circuit is sent out, failure here
Signal includes the temperature alarming of discharge off signal, temperature signal beyond temperature threshold generation that discharge current is generated beyond threshold value
Signal and other failure classes signals, when specific implementation, by the collector clamper of Fisrt fault triode to high level, second therefore
Hinder triode and failure diode current flow, sends out fault-signal, can effectively be warned by outwardly sending out fault-signal
Show that user and related management person repair inspection etc. to vehicle in time.
In addition, discharge detection circuit further includes parking detection module, parking detection module is in the speed etc. for detecting vehicle
When zero, the connection between anode and battery cathode is disconnected, parking detection module includes choked flow self-recovery fuse, choked flow
Self-recovery fuse is connected with above-mentioned fault detection module, and when in use, choked flow self-recovery fuse can be that alarm is powered,
In this way, even if when the connection between anode and battery cathode disconnects, the circuit where alarm still has been able to low current
It is powered.
First electric discharge field-effect tube can be replaced relay or silicon-controlled.
Field-effect tube can work under conditions of very little electric current and very low-voltage, and field-effect tube is to utilize control input circuit
Field effect carry out a kind of semiconductor devices of output control loop electric current.It belongs to voltage controlled semiconductor device, has
Input resistance height (107~1015 Ω), noise are small, low in energy consumption, dynamic range is big, are easily integrated, without secondary-breakdown phenomenon, peace
The advantages that full workspace field width, when for automotive discharges such as electric bicycles, the first field-effect tube and the second field-effect tube can
Discharge current limited very little when remain to effectively realize that break-make controls.
Relay is a kind of electric control device, can realize and control high current running with low current.When the change of input quantity
When change reaches its parameter index, relay can make controlled volume that scheduled Spline smoothing occur in output circuit.Therefore in circuit
In the effects that playing automatic adjustment, safeguard protection, conversion circuit.Relay, which generally has, can reflect certain input variable (such as electricity
Stream, voltage etc.) induction mechanism, have the output par, c that can realize switching control to controlled circuit, and input quantity coupled
Isolation, similarly, when for Vehicular chargings such as electric bicycles, the first field-effect tube and the second field-effect tube are all with relay come generation
For can discharge current limited very little when remain to effectively realize that break-make controls.
Silicon-controlled is a kind of high-power electric appliance element, is also called thyristor, small, efficient, long lifespan can be used as
High-power driving device realizes the purpose with small-power control control powerful device.In electric bicycle discharge detection circuit
Middle application can control the break-make between anode and battery cathode by the break-make of smaller current (i.e. discharge current).
In conclusion discharge detection circuit provided in this embodiment includes：Discharge condition acquisition module, electric discharge break-make control
Module and motor drive module, above-mentioned discharge condition acquisition module, electric discharge break-make control module and motor drive module phase successively
Connection, discharge condition acquisition module are also connected with battery cathode, and motor drive module is also connected with anode, is using
In the process, motor drive module is used to provide discharge current for the motor of vehicle, so that vehicle movement, discharge condition acquisition module
It is sent to control circuit for acquiring discharge current, also, by discharge current, control circuit is for detecting whether discharge current surpasses
Go out threshold value, also, generate discharge off signal when discharge current exceeds threshold value, electric discharge break-make control module is for receiving
When discharge off signal, the connection between anode and battery cathode is disconnected, by above-mentioned processing procedure, is realized to electric discharge
The real-time monitoring of electric current, can be when discharge current exceeds threshold value, in time by the company between motor drive module and anode
Disconnection is connect, continues externally electric discharge to terminate battery, further improves safety of the battery in discharge process.
Embodiment 2
Present embodiments providing charging detecting system includes：Metal battery box, accumulator and the charging such as any of the above-described
Detection circuit, accumulator are connected with charging detecting circuit, and in use, charging detecting circuit is for making accumulator
It is detected with state, also, accumulator and charging detecting circuit are both placed in the inside of above-mentioned metal battery box, in this way, golden
Belong to battery case accumulator and charging detecting circuit can be limited in the space inside metal battery box, in addition to the storage for vehicle
Battery and charging detecting circuit block extraneous dust and rainwater etc., additionally it is possible to completely cut off metal for accumulator and charging detecting circuit
Air outside battery case, once there is electric fault in battery etc. in charging process, after charging detecting circuit burns or catches fire,
Metal battery box can close accumulator and charging detecting circuit wherein, and accumulator is limited by way of starvation
Continue to continue with the failure of charging detecting circuit, to ensure the safety of entire vehicle, needs to illustrate, it is above-mentioned
Accumulator could alternatively be lead-acid battery or lithium battery.
In conclusion charging detecting system provided in this embodiment includes：Metal battery box, accumulator and as any of the above-described
The charging detecting circuit of item, above-mentioned accumulator are connected with charging detecting circuit, and in use, charging detecting circuit is used for
The use state of accumulator is detected, accumulator and charging detecting circuit are both placed in inside metal battery box, metal electricity
Pond box is used for accumulator and charging detecting circuit being limited in the space inside metal battery box, also, metal battery box energy
Enough it is the air outside accumulator and charging detecting circuit isolation metal battery box, to further ensure that entire vehicle is filling
Safety in electric process.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description
Specific work process, can refer to previous embodiment in corresponding process, details are not described herein.
In addition, in the description of the embodiment of the present invention unless specifically defined or limited otherwise, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.To those skilled in the art, it can understand above-mentioned term in the present invention with concrete condition
Concrete meaning.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.
Finally it should be noted that：Embodiment described above, only specific implementation mode of the invention, to illustrate the present invention
Technical solution, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, it will be understood by those of ordinary skill in the art that：Any one skilled in the art
In the technical scope disclosed by the present invention, it can still modify to the technical solution recorded in previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention, should all cover the protection in the present invention
Within the scope of.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. discharge detection circuit, which is characterized in that including：Discharge condition acquisition module, electric discharge break-make control module and motor drive
Dynamic model block；
The discharge condition acquisition module, the electric discharge break-make control module and the motor drive module are sequentially connected and connect, institute
It states discharge condition acquisition module to be also connected with battery cathode, the motor drive module is also connected with anode；
The motor drive module, for providing discharge current for the motor of vehicle, so that vehicle movement；
The discharge condition acquisition module, for acquiring the discharge current, and, the discharge current is sent to the control
Circuit；
The control circuit, for detecting whether discharge current exceeds threshold value, and, when the discharge current exceeds the threshold value
Generate discharge off signal；
The electric discharge break-make control module, it is negative for when receiving the discharge off signal, disconnecting anode and battery
Connection between pole.
2. discharge detection circuit according to claim 1, which is characterized in that the discharge condition acquisition module includes first
Discharge resistance and the first discharge capacity, the motor drive module are connected with one end of first discharge resistance, and described
The other end of one discharge resistance is grounded, and first discharge capacity is connected in parallel on the both ends of first discharge resistance, and described first
Discharge capacity is used for filtering clutter, and the discharge current is acquired by first discharge resistance.
3. discharge detection circuit according to claim 1, which is characterized in that the electric discharge break-make control module includes second
Discharge resistance, the first electric discharge self-recovery fuse, the first electric discharge field-effect tube, the first discharge diode, third discharge resistance, the
Four discharge resistances, the 5th discharge resistance；
One end of second discharge resistance is connected with the control circuit, the other end of second discharge resistance with it is described
The drain electrode of first electric discharge field-effect tube is connected, the source electrode and first discharge diode of the first electric discharge field-effect tube
Emitter is connected, and the collector of first discharge diode is connected with the grid of the first electric discharge field-effect tube, institute
The collector for stating the first discharge diode is connected with one end of the third discharge resistance, the third discharge resistance it is another
End is connected to the motor and connects, and the base stage of first discharge diode is connected with one end of the 4th discharge resistance, and described the
The other end of four discharge resistances is connected with one end of the 5th discharge resistance, the other end of the 4th discharge resistance and institute
It states control circuit to be connected, the other end of the 5th discharge resistance is connected with the feeder ear of the control circuit；
4th discharge resistance is when receiving the discharge off signal, the first discharge diode cut-off, institute
Another terminal voltage for stating third discharge resistance is zero；
One end of the first electric discharge self-recovery fuse is connected with battery cathode, the first electric discharge self-recovery fuse
The other end is connected with the other end of the second discharge resistance, when the first electric discharge field-effect tube cut-off, the discharge current
Second discharge resistance is reached through the first electric discharge self-recovery fuse.
4. discharge detection circuit according to claim 1, which is characterized in that further include auxiliary power module, the auxiliary
One end of power module is connected with anode, and the other end of the auxiliary power module is connected with battery cathode；
The auxiliary power module is converted the voltage of anode twice, respectively obtains first voltage and second voltage,
And the driving that the first voltage is switching device is powered, the second voltage is powered for the control circuit.
5. discharge detection circuit according to claim 4, which is characterized in that the auxiliary power module includes the first partial pressure
Triode, the second partial pressure triode, the first divider resistance, the second divider resistance, the first voltage-stabiliser tube and the second voltage-stabiliser tube；
One end of first divider resistance is connected with anode, the other end of first divider resistance and described first
The base stage of partial pressure triode is connected, and the collector of the first partial pressure triode is connected with anode, and described first is steady
One end of pressure pipe is connected with battery cathode, the base stage phase of the other end of first voltage-stabiliser tube and the first partial pressure triode
The emitter of connection, the first partial pressure triode is connected with one end of second divider resistance, the second partial pressure electricity
The other end of resistance is connected with the base stage of the second partial pressure triode, the emitter and described the of the second partial pressure triode
One end of two voltage-stabiliser tubes is connected, and the other end of second voltage-stabiliser tube is connected with the collector of second voltage-stabiliser tube；
First voltage-stabiliser tube, for dividing triode burning voltage for described first；
Second voltage-stabiliser tube, for dividing triode burning voltage for described second；
The emitter voltage-to-ground of the first partial pressure triode is the first voltage；
The emitter voltage-to-ground of the second partial pressure triode is the second voltage.
6. discharge detection circuit according to claim 4, which is characterized in that further include battery temperature detection module, it is described
Battery temperature detection module is used to acquire the temperature signal of battery, and, the temperature signal is sent to the control circuit；
The control circuit, for generating heat alarm when the temperature signal exceeds temperature threshold；
The battery temperature detection module includes thermistor socket, thermistor plug and thermistor, the thermistor
One end of socket is grounded, and the other end of the thermistor socket connects the second voltage, the thermistor plug and institute
It states thermistor and is connected into closed circuit；
When the thermistor is fitted on battery, when the temperature signal that the thermistor collects battery exceeds temperature
Heat alarm is generated when threshold value.
7. discharge detection circuit according to claim 1, which is characterized in that further include fault detection module, the failure
Detection module includes Fisrt fault resistance, Fisrt fault triode, the second failure triode and failure diode, first event
One end of barrier resistance is connected with the control circuit, the other end of the Fisrt fault resistance and the Fisrt fault triode
Base stage is connected, the emitter of Fisrt fault triode ground connection, the collector of the Fisrt fault triode and described the
The base stage of two failure triodes is connected, and the emitter of the second failure triode is connected with anode, and described second
The collector of failure triode is connected with the anode of the failure diode, and cathode and the failure of the failure diode export
End is connected, and the Fisrt fault triode is NPN type triode, and the second failure triode is PNP type triode；
When the Fisrt fault resistance receives the fault-signal that the control circuit is sent out, by the Fisrt fault triode
Collector clamper to high level, the second failure triode and the failure diode current flow, send out fault-signal.
8. discharge detection circuit according to claim 1, which is characterized in that further include parking detection module, the parking
Detection module disconnects the connection between anode and battery cathode when the speed for detecting vehicle is equal to zero, and choked flow is from extensive
Double insurance silk is powered for alarm.
9. discharge detection circuit according to claim 3, which is characterized in that the first electric discharge field-effect tube can be replaced
Relay is silicon-controlled.
10. discharging detecting system, which is characterized in that including：Metal battery box, accumulator and such as any one of claim 1-9 institutes
The discharging detection device stated；
The accumulator is connected with the discharging detection device；
The discharging detection device is detected for the use state to the accumulator；
The accumulator and the discharging detection device are both placed in inside the metal battery box；
The metal battery box, for the accumulator and the discharging detection device to be limited in inside the metal battery box
Space in, and, be that the accumulator and the discharging detection device completely cut off air outside metal battery box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810340485.7A CN108418184A (en) | 2018-04-16 | 2018-04-16 | discharge detection circuit and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810340485.7A CN108418184A (en) | 2018-04-16 | 2018-04-16 | discharge detection circuit and system |
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| Publication Number | Publication Date |
|---|---|
| CN108418184A true CN108418184A (en) | 2018-08-17 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810340485.7A Pending CN108418184A (en) | 2018-04-16 | 2018-04-16 | discharge detection circuit and system |
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| CN (1) | CN108418184A (en) |
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| US20110045323A1 (en) * | 2009-08-21 | 2011-02-24 | Motorola, Inc. | Current limiting apparatus and method |
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