CN109031111A - Relay status diagnostic circuit and power supply - Google Patents
Relay status diagnostic circuit and power supply Download PDFInfo
- Publication number
- CN109031111A CN109031111A CN201810913190.4A CN201810913190A CN109031111A CN 109031111 A CN109031111 A CN 109031111A CN 201810913190 A CN201810913190 A CN 201810913190A CN 109031111 A CN109031111 A CN 109031111A
- Authority
- CN
- China
- Prior art keywords
- relay
- resistance
- switch
- input terminal
- connect
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
- G01R31/3274—Details related to measuring, e.g. sensing, displaying or computing; Measuring of variables related to the contact pieces, e.g. wear, position or resistance
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The present invention provides a kind of relay status diagnostic circuit and power supplys, it is related to the technical field of battery management, for detecting the relay status of power supply, comprising: supply voltage detection module, positive relay test module, negative relay test module, rear end voltage detection module and voltage acquisition module；Supply voltage detection module, including first resistor and first switch；Positive relay test module, comprising: second resistance, 3rd resistor, second switch and third switch；Negative relay test module includes optocoupler, the 4th resistance, the 4th switch and the 5th switch；Rear end voltage detection module includes the 5th resistance and the 6th switch.First input end, the second input terminal and the received voltage of third input terminal, supply voltage detection module, positive relay test module, negative relay test module and rear end voltage detection module are acquired by voltage acquisition module, can quickly and accurately diagnose relay status.
Description
Technical field
The present invention relates to technical field of battery management, more particularly, to a kind of relay status diagnostic circuit and power supply.
Background technique
New-energy automobile refers to using unconventional vehicle fuel as a source of power or using conventional vehicle fuel, adopts
With new vehicle-mounted power plant, the dynamic Control of comprehensive vehicle and the advanced technology of driving aspect, the technical principle of formation is advanced,
Automobile with new technology, new construction.The development for accelerating new-energy automobile, can be effectively relieved the energy and environmental pressure, push
Automobile industry sustainable development accelerates automobile industry transition and upgrade, taps new sources of economic growth and international competitive advantage.Mixing
Power vehicle (Hybrid Electric Vehicle, HEV) refer to drive system by it is two or more can operate simultaneously it is single
The vehicle that driving system constitutes jointly, the road horsepower of vehicle is independent or more by individually driving according to actual vehicle running state
A driving system is common to be provided.With the continuous in-depth to electrified direction of current new-energy automobile technological development direction, mixing
Charge circuit and discharge loop are gradually rendered as separated trend in dynamical system battery pack design scheme.
This design scheme has higher safety, and charge circuit is relatively independent with discharge loop, during discharge,
Charge circuit is not connect with battery modules；During the charging process, discharge loop is not connect with battery modules.If charge circuit goes out
Existing failure, nor affects on the normal work of discharge loop.However in this design scheme, relay status be difficult to obtain quickly,
Accurately diagnose.
It is above-mentioned relay status is difficult to quickly and accurately be diagnosed in the prior art aiming at the problem that, not yet mention at present
Effective solution out.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of relay status diagnostic circuit and power supply, it can be quick, quasi-
Really diagnose relay status.
In a first aspect, the embodiment of the invention provides a kind of relay status diagnostic circuits, for detecting the relay of power supply
Device state, comprising: supply voltage detection module, positive relay test module, negative relay test module, rear terminal voltage detecting mould
Block and voltage acquisition module；Relay includes the positive relay of trickle charge, trickle charge preliminary filling relay, the positive relay of electric discharge, electric discharge preliminary filling
Relay, the negative relay of electric discharge and the negative relay of charging, power supply by relay, trickle charge preliminary filling resistance, electric discharge preliminary filling resistance with
Load connection；Supply voltage detection module, including first resistor and first switch, the input terminal and positive pole of first switch connect
It connects；The first input end of the output end of first switch, one end of first resistor and voltage acquisition module is all connected with, first resistor
The other end is connect with power cathode；Positive relay test module, comprising: second resistance, 3rd resistor, second switch and third are opened
It closes；The output end of the input terminal of second switch, the output end of trickle charge preliminary filling resistance and the positive relay of trickle charge is all connected with, second switch
Output end, the second electricity group one end and the second input terminal of voltage acquisition module be all connected with, the other end and electricity of the second electricity group
The output end of the connection of source cathode, the input terminal of third switch, the output end for the preliminary filling resistance that discharges and the positive relay of electric discharge is all connected with,
Third switch output end, one end of third electricity group and the third input terminal of voltage acquisition module be all connected with, third electricity group it is another
One end is connect with power cathode；Negative relay test module includes optocoupler, the 4th resistance, the 4th switch and the 5th switch；4th
One end of resistance is connect with positive pole, and the other end of the 4th resistance and the anode of optocoupler connect, the cathode of optocoupler, the 4th switch
Input terminal and the input terminal of the 5th switch be all connected with, the output end of the 4th switch is connect with the input terminal of the negative relay of electric discharge,
The output end of 5th switch is connect with the input terminal for the negative relay that charges；Rear end voltage detection module includes the 5th resistance and the 6th
Switch；The input terminal of 6th switch and the output end of current divider connect, and the output end of the 6th switch and one end of the 5th resistance connect
It connects, the other end of the 5th resistance is connect with the input terminal for the negative relay that discharges.
With reference to first aspect, the embodiment of the invention provides the first possible embodiments of first aspect, wherein also
It include: the 6th resistance；One end of one end of the 6th resistance, positive pole and the 4th resistance is all connected with, the other end of the 6th resistance
It is connect with the input terminal of first switch.
With reference to first aspect, the embodiment of the invention provides second of possible embodiments of first aspect, wherein also
It include: first diode；The anode of first diode is connect with the cathode of optocoupler, the cathode of first diode and the anode of optocoupler
Connection.
With reference to first aspect, the embodiment of the invention provides the third possible embodiments of first aspect, wherein also
It include: the second diode；The anode of second diode is connect with the other end of the 5th resistance, the cathode of the second diode and electric discharge
The input terminal of negative relay connects.
With reference to first aspect, the embodiment of the invention provides the 4th kind of possible embodiments of first aspect, wherein also
It include: the 7th resistance；One end of 7th resistance connects with the output end of trickle charge preliminary filling resistance and the output end of the positive relay of trickle charge
It connects, the other end of the 7th resistance and the input terminal of second switch connect.
With reference to first aspect, the embodiment of the invention provides the 5th kind of possible embodiments of first aspect, wherein also
It include: the 8th resistance；One end of 8th resistance connects with the output end of electric discharge preliminary filling resistance and the output end of the positive relay of electric discharge
It connects, the other end of the 8th resistance is connect with the input terminal that third switchs.
With reference to first aspect, the embodiment of the invention provides the 6th kind of possible embodiments of first aspect, wherein also
It include: third diode；The anode of third diode is connect with the output end of the 4th switch, the cathode of third diode and electric discharge
The input terminal of negative relay connects.
With reference to first aspect, the embodiment of the invention provides the 7th kind of possible embodiments of first aspect, wherein also
It include: the 4th diode；The anode of 4th diode is connect with the output end of the 5th switch, the cathode of the 4th diode and charging
The input terminal of negative relay connects.
With reference to first aspect, the embodiment of the invention provides the 8th kind of possible embodiments of first aspect, wherein the
One switch to the 6th switch is optocoupler.
Second aspect, the embodiment of the present invention also provide a kind of power supply, including such as first aspect and its each possible embodiment party
Relay status diagnostic circuit, relay, preliminary filling resistance and the current divider that one of formula provides.
The embodiment of the present invention bring it is following the utility model has the advantages that
Relay status diagnostic circuit and power supply provided in an embodiment of the present invention, comprising: supply voltage detection module, just after
Electrical testing module, negative relay test module, rear end voltage detection module and voltage acquisition module, pass through voltage acquisition module
Acquire first input end, the second input terminal and the received voltage of third input terminal, supply voltage detection module, positive relay test
Module, negative relay test module and rear end voltage detection module, can quickly and accurately diagnose relay status.
Other feature and advantage of the disclosure will illustrate in the following description, alternatively, Partial Feature and advantage can be with
Deduce from specification or unambiguously determine, or by implement the disclosure above-mentioned technology it can be learnt that.
To enable the above objects, features, and advantages of the disclosure to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
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 be briefly described, it should be apparent that, it is 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, is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of circuit structure diagram of battery pack circuit provided in an embodiment of the present invention；
Fig. 2 is the circuit structure diagram of another battery pack circuit provided in an embodiment of the present invention；
Fig. 3 is a kind of circuit structure diagram of relay status diagnostic circuit provided in an embodiment of the present invention；
Fig. 4 is the circuit structure diagram of another relay status diagnostic circuit provided in an embodiment of the present invention；
Fig. 5 is a kind of structural schematic diagram of power supply provided in an embodiment of the present invention.
Icon:
1- power supply；11- battery modules；12- service switch；2-BMS main control module；The positive relay of 31- trickle charge；32- trickle charge
Preliminary filling relay；33- trickle charge preliminary filling resistance；The positive relay of 34- electric discharge；35- electric discharge preliminary filling relay；36- electric discharge preliminary filling resistance；
The negative relay of 41- electric discharge；The negative relay of 42- charging；The dangerous silk of 51- charging；52- high-pressure installation；53- vehicle-mounted charging device；6- high
Pressing plate；7- current divider；8- load；9- voltage acquisition module；R1, R2, R3, R4, R5, R6, R7, R8- resistance；U1, U2, U3, U4,
U5, U6, U7- optocoupler；D1, D2, D3, D4- diode；A1, a2, a3- voltage acquisition module input terminal.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
Currently, with the continuous in-depth to electrified direction of current new-energy automobile technological development direction, hybrid power
Charge circuit and discharge loop are gradually rendered as separated trend in system battery packet design scheme.
A kind of circuit structure diagram of battery pack circuit shown in Figure 1.As shown in Figure 1, the battery pack circuit includes: electricity
Source 1, relay, charge dangerous silk 51 and BMS (Battery Management System, battery management system) main control module 2.
Power supply 1 includes sequentially connected battery modules 11 and service switch 12, and battery modules 11 are used to power for battery pack circuit, maintenance
When switch 12 disconnects, circuit is in an off state, and can be overhauled to entire battery pack circuit.Relay include: trickle charge just
It relay 31, trickle charge preliminary filling relay 32, the positive relay 34 of electric discharge, electric discharge preliminary filling relay 35, the negative relay 41 of electric discharge and fills
The negative relay 42 of electricity.The disconnection of relay and closure are controlled by BMS main control module 2.
Positive pole, the input terminal of the positive relay 31 of trickle charge, the input terminal of trickle charge preliminary filling relay 32, the positive relay of electric discharge
34 input terminal and the input terminal of electric discharge preliminary filling relay 35 are all connected with；The output end and trickle charge preliminary filling of trickle charge preliminary filling relay 32
One end of resistance 33 connects, the other end of trickle charge preliminary filling resistance 33, the output end of the positive relay 31 of trickle charge and the dangerous silk 51 that charges
Input terminal is all connected with, and the output end for the dangerous silk 4 that charges is connect with the input terminal of vehicle-mounted charging device 53, vehicle-mounted charging device 53 it is defeated
Outlet is connect with the input terminal for the negative relay 42 that charges, and the output end for the negative relay 42 that charges is connect with power cathode.
The output end of electric discharge preliminary filling relay 35 is connect with one end of electric discharge preliminary filling resistance 36, the another of preliminary filling resistance 36 of discharging
The input terminal of one end, the output end of the positive relay 34 of electric discharge and high-pressure installation 52 is all connected with, the output end of high-pressure installation 52 with put
The input terminal connection of the negative relay 41 of electricity, the output end for the negative relay 41 that discharges are connect with power cathode.
The disconnection of this all relays of battery pack and closure are all controlled by BMS main control module, and this design scheme has
Higher safety, charge circuit is relatively independent with discharge loop, and during discharge, charge circuit does not connect with battery modules
It connects；During the charging process, discharge loop is not connect with battery modules.If charge circuit breaks down, nor affects on and discharge back
The normal work on road.However the unilateral control relay of BMS main control module is used in this design scheme, security level is lower.
In order to further increase the security level of battery pack, increases high-voltage acquisition module, realize the bilateral drive to relay
It is dynamic, the circuit structure diagram of another battery pack circuit shown in Figure 2.As shown in Fig. 2, a kind of battery pack shown in Fig. 1
On the basis of the circuit structure diagram of circuit, Fig. 2 increases hardboard 6, and the input terminal of hardboard 6 is connect with each relay, high
The output end of pressing plate 6 is connect with the input terminal of BMS main control module 2, and hardboard 6 is used to acquire relay voltage, and by relay
Voltage condition is output in BMS main control module 2, to realize the bilateral driving to relay, increases the safety of battery pack
Grade.However relay status is difficult to quickly and accurately be diagnosed in this battery pack design scheme.
Based on this, a kind of relay status diagnostic circuit and power supply provided in an embodiment of the present invention, comprising: supply voltage inspection
Survey module, positive relay test module, negative relay test module, rear end voltage detection module and voltage acquisition module, voltage
Acquisition module can be examined quickly and accurately by acquisition first input end, the second input terminal and the received voltage of third input terminal
Disconnected relay status.
To be diagnosed to a kind of relay status disclosed in the embodiment of the present invention first convenient for understanding the present embodiment
Circuit describes in detail.
Embodiment 1
The embodiment of the present invention 1 provides a kind of relay status diagnostic circuit, for detecting the relay status of power supply, wraps
It includes: supply voltage detection module, positive relay test module, negative relay test module, rear end voltage detection module and voltage
Acquisition module；Relay includes the positive relay of trickle charge, trickle charge preliminary filling relay, the positive relay of electric discharge, electric discharge preliminary filling relay, puts
The negative relay of electricity and the negative relay that charges, power supply are connected by relay, trickle charge preliminary filling resistance, electric discharge preliminary filling resistance and load.
Supply voltage detection module, including first resistor and first switch, the input terminal and positive pole of first switch connect
It connects；The first input end of the output end of first switch, one end of first resistor and voltage acquisition module is all connected with, first resistor
The other end is connect with power cathode.
Positive relay test module, comprising: second resistance, 3rd resistor, second switch and third switch；Second switch
The output end of input terminal, the output end of trickle charge preliminary filling resistance and the positive relay of trickle charge is all connected with, the output end of second switch, second
One end of electricity group and the second input terminal of voltage acquisition module are all connected with, and the other end of the second electricity group is connect with power cathode, the
The output end of the input terminal of three switches, the output end for the preliminary filling resistance that discharges and the positive relay of electric discharge is all connected with, and third switchs defeated
The third input terminal of outlet, one end of third electricity group and voltage acquisition module is all connected with, and the other end and power supply of third electricity group are negative
Pole connection.
Negative relay test module includes optocoupler, the 4th resistance, the 4th switch and the 5th switch；One end of 4th resistance with
The anode of positive pole connection, the other end of the 4th resistance and optocoupler connects, the cathode of optocoupler, the input terminal of the 4th switch and the
The input terminals of five switches are all connected with, and the output end of the 4th switch is connect with the input terminal for the negative relay of discharging, the 5th switch it is defeated
Outlet is connect with the input terminal for the negative relay that charges.
Rear end voltage detection module includes the 5th resistance and the 6th switch；The output of the input terminal and current divider of 6th switch
The output end of end connection, the 6th switch is connect with one end of the 5th resistance, the other end of the 5th resistance and the negative relay that discharges
Input terminal connection.
For switching using optocoupler, a kind of circuit structure diagram of relay status diagnostic circuit shown in Figure 3, such as
Shown in Fig. 3, comprising: power supply 1, battery modules 11, the positive relay 31 of trickle charge, trickle charge preliminary filling relay 32, trickle charge preliminary filling resistance 33,
Discharge positive relay 34, electric discharge preliminary filling relay 35, electric discharge preliminary filling resistance 36, the negative relay 41 of electric discharge, the negative relay 42 of charging,
Load 8, current divider 7, the voltage acquisition module with input terminal a1, a2, a3, resistance R1, resistance R2, resistance R3, resistance R4, electricity
Hinder R5, optocoupler U2, optocoupler U3, optocoupler U4, optocoupler U5, optocoupler U6 and optocoupler U7.
It include battery modules 11, positive pole, the input terminal of the positive relay 31 of trickle charge, trickle charge preliminary filling relay inside power supply 1
The input terminal of the input terminal of device 32, the input terminal of the positive relay 34 of electric discharge and the preliminary filling relay 35 that discharges is all connected with, trickle charge preliminary filling
The output end of relay 32 is connect with the input terminal of trickle charge preliminary filling resistance 33, and the output end for the preliminary filling relay 35 that discharges and electric discharge are pre-
The input terminal connection of charging resistance 36, the output end for the preliminary filling resistance 36 that discharges are connect with the output end for the positive relay 34 that discharges, trickle charge
The input terminal of the output end of preliminary filling resistance 33, the output end of the positive relay 31 of trickle charge and load 8 is all connected with, and loads 8 output end
It is connect with power cathode, output end, the output end of the negative relay 42 of charging and the input terminal of current divider 7 of the negative relay 41 that discharges
It is all connected with, the output end of current divider 7 is connect with power cathode.
Foregoing circuit includes: supply voltage detection module, positive relay test module, negative relay test module, rear end
Voltage detection module and voltage acquisition module.Wherein, in supply voltage detection module, the collector of positive pole and optocoupler U1 connect
It connects, the emitter of optocoupler U1 is connect with one end of resistance R1, and the other end of resistance R1 connects power cathode.Signal acquisition module 9
Input terminal a1 acquisition resistance R1 voltage, R1 voltage is exactly supply voltage.
In positive relay test module, the collector of optocoupler U2 and the output end of trickle charge preliminary filling resistance 33 and the positive relay of trickle charge
The output end of device 31 connects, and the emitter of optocoupler U2 is connect with resistance R2, and the other end of R2 connects power cathode.Signal acquisition mould
The voltage of the input terminal a2 acquisition resistance R2 of block 9.
It disconnects the positive relay of trickle charge and trickle charge preliminary filling relay and is closed U2 and U1, if the voltage letter of input terminal a2 acquisition
It number is 0, then illustrating the positive relay of trickle charge and trickle charge preliminary filling relay, there is no adhesion problems；If the voltage of input terminal a2 acquisition
Signal is identical as the voltage signal that input terminal a1 is acquired, then illustrates that there are adhesion problems for the positive relay of trickle charge；If input terminal a2
The voltage signal of acquisition is less than the voltage signal of input terminal a1 acquisition, then illustrating the positive relay of trickle charge, there is no adhesion problems, slowly
Filling preliminary filling relay, there are adhesion problems.
In positive relay test module, the output end and the positive relay of electric discharge of the collector of optocoupler U3 and the preliminary filling resistance 36 that discharges
The output end of device 34 connects, and the emitter of optocoupler U3 is connect with resistance R3, and the other end of R3 connects power cathode.Signal acquisition mould
The voltage of the input terminal a3 acquisition resistance R3 of block 9.
It disconnects and discharges positive relay and electric discharge preliminary filling relay and be closed U3 and U1, if the voltage letter of input terminal a3 acquisition
It number is 0, then there is no adhesion problems for illustrate to discharge positive relay and electric discharge preliminary filling relay；If the voltage of input terminal a3 acquisition
Signal is identical as the voltage signal that input terminal a1 is acquired, then illustrating to discharge, there are adhesion problems for positive relay；If input terminal a3
The voltage signal of acquisition is less than the voltage signal of input terminal a1 acquisition, then there is no adhesion problems for the positive relay that illustrates to discharge, and puts
There are adhesion problems for electric preliminary filling relay.
In negative relay test module, one end of resistance R4 is connect with positive pole, and the anode of the other end and optocoupler U7 connect
Connect, the collector of the cathode of optocoupler U7, the collector of optocoupler U4 and optocoupler U5 is all connected with, the emitter of optocoupler U4 and electric discharge it is negative after
The input terminal of electric appliance 41 connects, and output end, current divider 7 and the power cathode for the negative relay 41 that discharges are sequentially connected；Optocoupler U5's
Emitter is connect with the input terminal for the negative relay 42 of charging, output end, current divider 7 and the power cathode of the negative relay 42 that charges according to
Secondary connection.
It disconnects and discharges negative relay and be closed U4, if the secondary side of U2 is not turned on, adhesion is not present in the negative relay that discharges
Problem；If the secondary side of U2 is connected, discharging, there are adhesion problems for negative relay.
It disconnects and charges negative relay and be closed U5, if the secondary side of U2 is not turned on, adhesion is not present in the negative relay that charges
Problem；If the secondary side of U2 is connected, charging, there are adhesion problems for negative relay.
In the voltage detection module of rear end, the collector of optocoupler U6 is connect with the output end of current divider 7, the emitter of optocoupler U6
It is connect with one end of resistance R5, the other end of resistance R5 is connect with the input terminal for the negative relay 41 that discharges.
Disconnect the positive relay of trickle charge, trickle charge preliminary filling relay, the positive relay of electric discharge and electric discharge preliminary filling relay, closure U2 and
U6 illustrates to load rear end not remaining charge if the collected voltage signal of input terminal a2 is 0；If input terminal a2
Collected voltage signal is not 0, then illustrates to load the charge that there is remaining in rear end.
Foregoing circuit provided in an embodiment of the present invention, comprising: supply voltage detection module, is born positive relay test module
Relay test module, rear end voltage detection module and voltage acquisition module, by voltage acquisition module acquire first input end,
Second input terminal and the received voltage of third input terminal, supply voltage detection module, positive relay test module, the inspection of negative relay
Module and rear end voltage detection module are surveyed, relay status can be quickly and accurately diagnosed.
Due to supply voltage is higher and voltage acquisition module collection voltages there are threshold values, if supply voltage has been more than voltage
The threshold value of acquisition module collection voltages, the service life that will lead to voltage acquisition module reduces or damage, it is therefore desirable to pass through increase
The mode of electric resistance partial pressure reduces the voltage of voltage acquisition module acquisition.Foregoing circuit further include:
(1) the 6th resistance；One end of one end of the 6th resistance, positive pole and the 4th resistance is all connected with, the 6th resistance
The other end and the input terminal of first switch connect.
6th resistance is set between power supply and first resistor and connects with first resistor, for reducing voltage acquisition module
The voltage of first input end acquisition.
(2) the 7th resistance；The output of one end of the 7th resistance and the output end of trickle charge preliminary filling resistance and the positive relay of trickle charge
End is all connected with, and the other end of the 7th resistance and the input terminal of second switch connect.
7th resistance is connected with second resistance, for reducing the voltage of the second input terminal of voltage acquisition module acquisition.
(3) the 8th resistance；The output of one end of the 8th resistance and the output end of electric discharge preliminary filling resistance and the positive relay of electric discharge
End is all connected with, and the other end of the 8th resistance is connect with the input terminal that third switchs.
8th resistance is connected with 3rd resistor, for reducing the voltage of voltage acquisition module third input terminal acquisition.
Foregoing circuit provided in an embodiment of the present invention is reduced voltage and is adopted by the 6th resistance, the 7th resistance and the 8th resistance
The voltage for collecting module input acquisition prevents from causing voltage to be adopted due to the voltage that voltage acquisition module input terminal acquires is more than threshold value
Collect module life to reduce or damage.
In order to guarantee the one-way conduction of circuit, can also be wrapped by the transmission direction of diode specified signal, foregoing circuit
It includes:
(1) first diode；The anode of first diode is connect with the cathode of optocoupler, the cathode and optocoupler of first diode
Anode connection.
First diode is set to negative relay test module, to provide that the signal in negative relay test module transmits
Direction.
(2) second diodes；The anode of second diode is connect with the other end of the 5th resistance, the cathode of the second diode
It is connect with the input terminal for the negative relay that discharges.
Second diode is set to rear end voltage detection module, to provide that the signal in the voltage detection module of rear end transmits
Direction.
(3) third diode；The anode of third diode is connect with the output end of the 4th switch, the cathode of third diode
It is connect with the input terminal for the negative relay that discharges.
Third diode is set to negative relay test module, to provide that the signal in negative relay test module transmits
Direction.
(4) the 4th diodes；The anode of 4th diode is connect with the output end of the 5th switch, the cathode of the 4th diode
It is connect with the input terminal for the negative relay that charges.
4th diode is set to negative relay test module, to provide that the signal in negative relay test module transmits
Direction.
Foregoing circuit provided in an embodiment of the present invention passes through first diode, the second diode, third diode and the 4th
The outbound course of diode specified signal guarantees the one-way conduction of circuit.
A kind of relay status diagnostic circuit provided in this embodiment, comprising: supply voltage detection module, the inspection of positive relay
Survey module, negative relay test module, rear end voltage detection module, voltage acquisition module, the 6th resistance, the 7th resistance, the 8th
Resistance, first diode, the second diode, third diode and the 4th diode, it is defeated by voltage acquisition module acquisition first
Enter end, the second input terminal and the received voltage of third input terminal, supply voltage detection module, positive relay test module, it is negative after
Electrical testing module and rear end voltage detection module, can quickly and accurately diagnose relay status.Pass through the 6th resistance,
Seven resistance and the 8th resistance reduce the voltage of voltage acquisition module input terminal acquisition, prevent from adopting because of voltage acquisition module input terminal
The voltage of collection is more than threshold value and the voltage acquisition module service life is caused to reduce or damage.Pass through first diode, the second diode,
The outbound course of three diodes and the 4th diode specified signal guarantees the one-way conduction of circuit.
Embodiment 2
The embodiment of the present invention 2 provides a kind of relay status diagnostic circuit, another relay status shown in Figure 4
The circuit structure diagram of diagnostic circuit, as shown in Figure 4, comprising: power supply 1, battery modules 11, the positive relay 31 of trickle charge, trickle charge preliminary filling
Relay 32, trickle charge preliminary filling resistance 33, the positive relay 34 of electric discharge, electric discharge preliminary filling relay 35, electric discharge preliminary filling resistance 36, electric discharge are negative
Relay 41, the negative relay 42 of charging, load 8, current divider 7, the voltage acquisition module with input terminal a1, a2, a3, resistance
R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, optocoupler U2, optocoupler U3, optocoupler U4, optocoupler
U5, optocoupler U6, optocoupler U7, diode D1, diode D2, diode D3, diode D4.
It include battery modules 11, positive pole, the input terminal of the positive relay 31 of trickle charge, trickle charge preliminary filling relay inside power supply 1
The input terminal of the input terminal of device 32, the input terminal of the positive relay 34 of electric discharge and the preliminary filling relay 35 that discharges is all connected with, trickle charge preliminary filling
The output end of relay 32 is connect with the input terminal of trickle charge preliminary filling resistance 33, and the output end for the preliminary filling relay 35 that discharges and electric discharge are pre-
The input terminal connection of charging resistance 36, the output end for the preliminary filling resistance 36 that discharges are connect with the output end for the positive relay 34 that discharges, trickle charge
The input terminal of the output end of preliminary filling resistance 33, the output end of the positive relay 31 of trickle charge and load 8 is all connected with, and loads 8 output end
It is connect with power cathode, output end, the output end of the negative relay 42 of charging and the input terminal of current divider 7 of the negative relay 41 that discharges
It is all connected with, the output end of current divider 7 is connect with power cathode.
Foregoing circuit includes: supply voltage detection module, positive relay test module, negative relay test module, rear end
Voltage detection module and voltage acquisition module.Wherein, in supply voltage detection module, one end of positive pole and resistance R6 connect
It connects, the other end of resistance R6 is connect with the collector of optocoupler U1, and the emitter of optocoupler U1 is connect with one end of resistance R1, resistance R1
The other end connect power cathode.The voltage of the input terminal a1 acquisition resistance R1 of signal acquisition module 9, according to formula U=U1*
(R1+R6) the available supply voltage of/R1, wherein U1 is that the input terminal a1 of signal acquisition module 9 acquires the voltage of resistance R1,
R1, R6 are respectively the resistance value of resistance R1, R6, and U is supply voltage.
In positive relay test module, one end of resistance R7 and the output end of trickle charge preliminary filling resistance 33 and the positive relay of trickle charge
31 output end connection, the other end of resistance R7 are connect with the collector of optocoupler U2, and the emitter of optocoupler U2 is connect with resistance R2,
The other end of R2 connects power cathode.The voltage of the input terminal a2 acquisition resistance R2 of signal acquisition module 9.
It disconnects the positive relay of trickle charge and trickle charge preliminary filling relay and is closed U2 and U1, if the voltage letter of input terminal a2 acquisition
It number is 0, then illustrating the positive relay of trickle charge and trickle charge preliminary filling relay, there is no adhesion problems；If the voltage of input terminal a2 acquisition
There are following relationships: U2* (R2+R7)/R2=U1* (R1+R6)/R1 for signal and the voltage signal of input terminal a1 acquisition, wherein
U1, U2 are respectively that the input terminal a1 of signal acquisition module 9 acquires the voltage of resistance R1 and the voltage of input terminal a2 acquisition resistance R2,
R1, R2, R6, R7 are respectively the resistance value of resistance R1, R2, R6, R7, then illustrate that there are adhesion problems for the positive relay of trickle charge；If defeated
There are following relationships: U2* (R2+R7)/R2 < U1* for the voltage signal for voltage signal and input terminal the a1 acquisition for entering to hold a2 to acquire
(R1+R6)/R1, then illustrating the positive relay of trickle charge, there is no adhesion problems, and there are adhesion problems for trickle charge preliminary filling relay.
In positive relay test module, the output end and the positive relay of electric discharge of one end of resistance R8 and the preliminary filling resistance 36 that discharges
34 output end connection, the other end of resistance R8 are connect with the collector of optocoupler U3, and the emitter of optocoupler U3 is connect with resistance R3,
The other end of R3 connects power cathode.The voltage of the input terminal a3 acquisition resistance R3 of signal acquisition module 9.
It disconnects and discharges positive relay and electric discharge preliminary filling relay and be closed U3 and U1, if the voltage letter of input terminal a3 acquisition
It number is 0, then there is no adhesion problems for illustrate to discharge positive relay and electric discharge preliminary filling relay；If the voltage of input terminal a3 acquisition
There are following relationships: U3* (R3+R8)/R3=U1* (R1+R6)/R1 for signal and the voltage signal of input terminal a1 acquisition, wherein
U1, U3 are respectively that the input terminal a1 of signal acquisition module 9 acquires the voltage of resistance R1 and the voltage of input terminal a3 acquisition resistance R3,
R1, R3, R6, R8 are respectively the resistance value of resistance R1, R3, R6, R8, then illustrating to discharge, there are adhesion problems for positive relay；If defeated
There are following relationships: U3* (R2+R8)/R3 < U1* for the voltage signal for voltage signal and input terminal the a1 acquisition for entering to hold a3 to acquire
(R1+R6)/R1, then the positive relay that illustrates to discharge is there is no adhesion problems, and discharging, there are adhesion problems for preliminary filling relay.
In negative relay test module, one end of resistance R4 is connect with positive pole, and the anode of the other end and optocoupler U7 connect
It connects, the collector of the cathode of optocoupler U7, the collector of optocoupler U4 and optocoupler U5 is all connected with, the emitter and diode D3 of optocoupler U4
Anode connection, the cathode of diode D3 connect with the input terminal of the negative relay 41 of electric discharge, the output end for the negative relay 41 that discharges,
Current divider 7 and power cathode are sequentially connected；The emitter diode D4 of optocoupler U5 anode connection, the cathode of diode D4 with fill
The input terminal connection of the negative relay 42 of electricity, output end, current divider 7 and the power cathode for the negative relay 42 that charges are sequentially connected, and two
The anode of pole pipe D1 is connect with the cathode of optocoupler U7, the anode connection of the cathode optocoupler U7 of diode D1.
It disconnects and discharges negative relay and be closed U4, if the secondary side of U2 is not turned on, adhesion is not present in the negative relay that discharges
Problem；If the secondary side of U2 is connected, discharging, there are adhesion problems for negative relay.
It disconnects and charges negative relay and be closed U5, if the secondary side of U2 is not turned on, adhesion is not present in the negative relay that charges
Problem；If the secondary side of U2 is connected, charging, there are adhesion problems for negative relay.
In the voltage detection module of rear end, the collector of optocoupler U6 is connect with the output end of current divider 7, the emitter of optocoupler U6
It is connect with one end of resistance R5, the other end of resistance R5 is connect with the anode of diode D2, and the cathode of diode D2 and electric discharge are negative
The input terminal of relay 41 connects.
Disconnect the positive relay of trickle charge, trickle charge preliminary filling relay, the positive relay of electric discharge and electric discharge preliminary filling relay, closure U2 and
U6 illustrates to load rear end not remaining charge if the collected voltage signal of input terminal a2 is 0；If input terminal a2
Collected voltage signal is not 0, then illustrates to load the charge that there is remaining in rear end.
A kind of relay status diagnostic circuit provided in this embodiment, comprising: supply voltage detection module, the inspection of positive relay
Survey module, negative relay test module, rear end voltage detection module and voltage acquisition module, can quickly and accurately diagnose after
Electrical appliance state prevents from causing the voltage acquisition module service life to reduce due to the voltage that voltage acquisition module input terminal acquires is more than threshold value
Or damage, guarantee the one-way conduction of circuit.
Embodiment 3
The embodiment of the present invention 3 provides a kind of power supply, the structural schematic diagram of a kind of power supply shown in Figure 5, such as Fig. 5 institute
Show, relay status diagnostic circuit, the relay, preliminary filling provided including one of such as first aspect and its each possible embodiment
Resistance and current divider.
It is apparent to those skilled in the art that for convenience and simplicity of description, the power supply of foregoing description
Specific work process, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
Power supply provided in an embodiment of the present invention, it is having the same with relay status diagnostic circuit provided by the above embodiment
Technical characteristic reaches identical technical effect so also can solve identical technical problem.
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
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Finally, it should be noted that embodiment described above, only a specific embodiment 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, those skilled in the art should understand that: anyone skilled in the art
In the technical scope disclosed by the present invention, it can still modify to technical solution documented by 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 in protection of the invention
Within the scope of.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (10)
1. a kind of relay status diagnostic circuit, which is characterized in that for detecting the relay status of power supply, comprising: power supply electricity
Press detection module, positive relay test module, negative relay test module, rear end voltage detection module and voltage acquisition module；
The relay includes the positive relay of trickle charge, trickle charge preliminary filling relay, the positive relay of electric discharge, electric discharge preliminary filling relay, puts
Electric negative relay and the negative relay that charges, the power supply is by the relay, trickle charge preliminary filling resistance, electric discharge preliminary filling resistance and bears
Carry connection；
Supply voltage detection module, including first resistor and first switch, the input terminal and positive pole of the first switch connect
It connects；The first input end of the output end of the first switch, one end of the first resistor and the voltage acquisition module connects
It connects, the other end of the first resistor is connect with power cathode；
Positive relay test module, comprising: second resistance, 3rd resistor, second switch and third switch；The second switch
The output end of input terminal, the output end of the trickle charge preliminary filling resistance and the positive relay of the trickle charge is all connected with, the second switch
Output end, the second electricity group one end and the second input terminal of the voltage acquisition module be all connected with, the described second electric group
The other end connect with the power cathode, the input terminal of third switch, the output end of the electric discharge preliminary filling resistance and institute
The output end for stating the positive relay that discharges is all connected with, the output end of the third switch, one end of the third electricity group and the electricity
The third input terminal of pressure acquisition module is all connected with, and the other end of the third electricity group is connect with the power cathode；
Negative relay test module includes optocoupler, the 4th resistance, the 4th switch and the 5th switch；One end of 4th resistance with
Positive pole connection, the other end of the 4th resistance are connect with the anode of the optocoupler, the cathode of the optocoupler, described
The input terminal of the input terminal of 4th switch and the 5th switch is all connected with, and the output end of the 4th switch and the electric discharge are negative
The input terminal of relay connects, and the output end of the 5th switch is connect with the input terminal of the negative relay of charging；
Rear end voltage detection module includes the 5th resistance and the 6th switch；The output of the input terminal and current divider of 6th switch
The output end of end connection, the 6th switch is connect with one end of the 5th resistance, the other end of the 5th resistance and institute
State the input terminal connection for the negative relay that discharges.
2. circuit according to claim 1, which is characterized in that further include: the 6th resistance；
One end of one end of the 6th resistance, the positive pole and the 4th resistance is all connected with, the 6th resistance
The other end is connect with the input terminal of the first switch.
3. circuit according to claim 1, which is characterized in that further include: first diode；
The anode of the first diode is connect with the cathode of the optocoupler, the cathode of the first diode and the optocoupler
Anode connection.
4. circuit according to claim 1, which is characterized in that further include: the second diode；
Second diode anode connect with the other end of the 5th resistance, the cathode of second diode with it is described
Discharge negative relay input terminal connection.
5. circuit according to claim 1, which is characterized in that further include: the 7th resistance；
One end of 7th resistance and the output end of the output end of the trickle charge preliminary filling resistance and the positive relay of the trickle charge are equal
Connection, the other end of the 7th resistance are connect with the input terminal of the second switch.
6. circuit according to claim 1, which is characterized in that further include: the 8th resistance；
One end of 8th resistance and the output end of the electric discharge preliminary filling resistance and the output end of the positive relay of electric discharge are equal
Connection, the other end of the 8th resistance are connect with the input terminal that the third switchs.
7. circuit according to claim 1, which is characterized in that further include: third diode；
The third diode anode with it is described 4th switch output end connect, the cathode of the third diode with it is described
Discharge negative relay input terminal connection.
8. circuit according to claim 1, which is characterized in that further include: the 4th diode；
4th diode anode with it is described 5th switch output end connect, the cathode of the 4th diode with it is described
Charge negative relay input terminal connection.
9. circuit according to claim 1, which is characterized in that the first switch to the 6th switch is optocoupler.
10. a kind of power supply, which is characterized in that including the described in any item relay status diagnostic circuits of such as claim 1-9, after
Electric appliance, preliminary filling resistance and current divider.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810913190.4A CN109031111B (en) | 2018-08-10 | 2018-08-10 | Relay state diagnostic circuit and power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810913190.4A CN109031111B (en) | 2018-08-10 | 2018-08-10 | Relay state diagnostic circuit and power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109031111A true CN109031111A (en) | 2018-12-18 |
| CN109031111B CN109031111B (en) | 2021-01-01 |
Family
ID=64633765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810913190.4A Active CN109031111B (en) | 2018-08-10 | 2018-08-10 | Relay state diagnostic circuit and power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109031111B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109739211A (en) * | 2018-12-29 | 2019-05-10 | 蜂巢能源科技有限公司 | Diagnostic system and electric vehicle for load circuit |
| CN112114250A (en) * | 2020-10-09 | 2020-12-22 | 湖北亿纬动力有限公司 | Relay state detection circuit and method |
| CN114019360A (en) * | 2021-10-27 | 2022-02-08 | 智新控制系统有限公司 | Multi-relay diagnostic system and method |
| CN115995801A (en) * | 2023-02-09 | 2023-04-21 | 上海拿森汽车电子有限公司 | Power supply device and system for vehicle body stabilization system and vehicle |
| WO2024055659A1 (en) * | 2022-09-16 | 2024-03-21 | 联合汽车电子有限公司 | Battery management controller, and communication method for battery management controller |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006050529A1 (en) * | 2006-10-26 | 2008-04-30 | Conti Temic Microelectronic Gmbh | Power supply isolation and contactor monitoring circuit arrangement for electric drive of motor vehicle i.e. passenger car, has points arranged such that contactors are connected, and additional point arranged such that it is separated |
| CN105137336A (en) * | 2015-07-29 | 2015-12-09 | 南通大学 | Diagnostic circuit and diagnostic method for detecting electric vehicle high-voltage relay fault |
| CN106338688A (en) * | 2016-08-24 | 2017-01-18 | 深圳市科列技术股份有限公司 | Vehicle battery management system main relay adhesion detection circuit and detection method thereof |
| CN106546916A (en) * | 2016-10-28 | 2017-03-29 | 深圳市科列技术股份有限公司 | A kind of electrokinetic cell high-voltage relay fault diagnosis circuit and diagnostic method |
| CN106772002A (en) * | 2016-11-30 | 2017-05-31 | 深圳市沃特玛电池有限公司 | A kind of charge relay adhesion detection means |
| CN106842006A (en) * | 2016-12-27 | 2017-06-13 | 安徽力高新能源技术有限公司 | A kind of relay adhesion detection method |
-
2018
- 2018-08-10 CN CN201810913190.4A patent/CN109031111B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006050529A1 (en) * | 2006-10-26 | 2008-04-30 | Conti Temic Microelectronic Gmbh | Power supply isolation and contactor monitoring circuit arrangement for electric drive of motor vehicle i.e. passenger car, has points arranged such that contactors are connected, and additional point arranged such that it is separated |
| CN105137336A (en) * | 2015-07-29 | 2015-12-09 | 南通大学 | Diagnostic circuit and diagnostic method for detecting electric vehicle high-voltage relay fault |
| CN106338688A (en) * | 2016-08-24 | 2017-01-18 | 深圳市科列技术股份有限公司 | Vehicle battery management system main relay adhesion detection circuit and detection method thereof |
| CN106546916A (en) * | 2016-10-28 | 2017-03-29 | 深圳市科列技术股份有限公司 | A kind of electrokinetic cell high-voltage relay fault diagnosis circuit and diagnostic method |
| CN106772002A (en) * | 2016-11-30 | 2017-05-31 | 深圳市沃特玛电池有限公司 | A kind of charge relay adhesion detection means |
| CN106842006A (en) * | 2016-12-27 | 2017-06-13 | 安徽力高新能源技术有限公司 | A kind of relay adhesion detection method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109739211A (en) * | 2018-12-29 | 2019-05-10 | 蜂巢能源科技有限公司 | Diagnostic system and electric vehicle for load circuit |
| CN112114250A (en) * | 2020-10-09 | 2020-12-22 | 湖北亿纬动力有限公司 | Relay state detection circuit and method |
| CN112114250B (en) * | 2020-10-09 | 2022-10-14 | 湖北亿纬动力有限公司 | Relay state detection circuit and method |
| CN114019360A (en) * | 2021-10-27 | 2022-02-08 | 智新控制系统有限公司 | Multi-relay diagnostic system and method |
| WO2024055659A1 (en) * | 2022-09-16 | 2024-03-21 | 联合汽车电子有限公司 | Battery management controller, and communication method for battery management controller |
| CN115995801A (en) * | 2023-02-09 | 2023-04-21 | 上海拿森汽车电子有限公司 | Power supply device and system for vehicle body stabilization system and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109031111B (en) | 2021-01-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109031111A (en) | Relay status diagnostic circuit and power supply | |
| CN107336632B (en) | Control method of electric vehicle combined charging system | |
| CN107554323A (en) | The control system and electric automobile of a kind of power battery pack | |
| CN110429671A (en) | A kind of electric car high-adaptability charging system and method | |
| CN101834464A (en) | Charging pile for electric vehicle | |
| CN110254289B (en) | Solar electric automobile charging system based on new and old battery hybrid management | |
| CN106585399A (en) | Electricity supplying vehicle and charging and discharging control circuit thereof | |
| CN104112876A (en) | Battery module and control method thereof | |
| CN102969756A (en) | Intelligent storage battery pack with self-detection function and connection circuit thereof | |
| CN209329747U (en) | A kind of compatible fault-tolerant large-sized battery train | |
| CN108899946A (en) | Battery charger, control method, electric car and electronic charging vehicle | |
| JP2022519956A (en) | Battery test system | |
| CN202041629U (en) | Cell box acquisition module used in cell management system in conversion station | |
| CN112793421B (en) | Storage battery power shortage prevention control system, electric vehicle and storage battery power shortage prevention control method | |
| CN212162855U (en) | High-voltage distribution box for energy storage system | |
| CN111823864B (en) | High-voltage interlocking detection device and method and vehicle | |
| CN203406389U (en) | Battery pack parallel-connection control box of electric automobile | |
| CN117805683A (en) | Reverse connection prevention detection device and detection control method for energy storage battery compartment | |
| CN206653947U (en) | A kind of electric automobile power battery system | |
| CN210396949U (en) | Generating set newly-increased double-battery starting system | |
| CN108448681A (en) | A kind of online method for detecting of the charger of battery management system | |
| CN210181195U (en) | Contactor state detection circuit | |
| CN114552726A (en) | New energy multi-source input low-voltage power distribution system supporting wireless communication | |
| CN218648599U (en) | Low-voltage platform direct-current quick charging circuit of new energy vehicle | |
| CN201031694Y (en) | Unlocking control device of remote electric control lock |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |