CN209590218U - The simulator of battery pack connection box - Google Patents
The simulator of battery pack connection box Download PDFInfo
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- CN209590218U CN209590218U CN201920211069.7U CN201920211069U CN209590218U CN 209590218 U CN209590218 U CN 209590218U CN 201920211069 U CN201920211069 U CN 201920211069U CN 209590218 U CN209590218 U CN 209590218U
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- 238000005070 sampling Methods 0.000 claims abstract description 34
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Abstract
The utility model discloses a kind of simulators of battery pack connection box, including power battery pack analog module, vehicle load DC exports analog module, DC charging analog module, switch control module, high pressure sampling module, the simulator of battery pack connection box is connected to testboard bay, switch control module receives voltage control signal and switch control signal, the disconnection and closure of output voltage and switch are adjusted with closure according to the disconnection of voltage control signal and switch control signal the control respective switch received, high pressure sampling module acquires corresponding voltage signal, circuit fault diagnosis is made based on collected voltage signal.A kind of simulator of battery pack connection box provided by the utility model more fully simulated battery packet can connect the function of box and simulate various fault modes, ensure that test can be carried out uninterruptedly, improve test economy and test efficiency.
Description
Technical field
The utility model relates to battery packs to connect box field, more specifically, being related to a kind of simulation of battery pack connection box
Device.
Background technique
Battery pack connection box (E-box) in electric automobile power battery packet is an important safety portion of power battery pack
Part mainly includes main relay, negative relay, precharging circuit (including preliminary filling relay, preliminary filling resistance etc.) and high pressure sampled point
Deng.Fig. 1 is the battery pack connection box schematic diagram of the prior art.As shown in Figure 1, battery pack connection box 11 includes main positive relay
MCP, main negative relay MCN, preliminary filling relay PCC, preliminary filling resistance R, the positive relay DCP of DC charging, the negative relay of DC charging
Device DCN, fuse FUSE, high pressure sampled point 101~107.The front end that battery pack connects box 11 connects power battery pack U_BAT,
Rear end connects vehicle load 12 and direct-current charging interface 13.Vehicle load 12 is vehicle rear end electrical appliance end, such as driving motor
Equivalent load.
Wherein, high pressure sampled point 101 is power battery pack negative terminal sampled reference point, and high pressure sampled point 102 is power battery
Packet anode sampled reference point, high pressure sampled point 103 are that vehicle load DC exports negative terminal sampled reference point, high pressure sampled point 104
For fuse rear end sampled reference point, high pressure sampled point 105 is vehicle load DC output plus terminal sampled reference point, high pressure sampling
Point 106 is direct-current charging interface DC anode sampled reference point, and high pressure sampled point 107 is direct-current charging interface DC negative terminal sampled reference
Point.
Preliminary filling resistance R is matched extremely important with the parameter of equivalent capacity in precharging circuit, if matching will be improper to be caused
Preliminary filling time-out or preliminary filling short circuit lead to problems such as electric current larger.The type selecting of preliminary filling resistance R will combine pre-charging time, equivalent capacity
Payload size etc. is because usually determining.
In addition, also easily generation is short-circuit, breaking and viscous by main positive relay MCP, main negative relay MCN and preliminary filling relay PCC
The failures such as company, high pressure sampled point 101~107 lead to problems such as to report rear end overtension by mistake it can also happen that sensor fault.
BMS battery management system (BATTERY MANAGEMENT SYSTEM) needs to carry out failure to these important devices
Detection and diagnosis, to guarantee that battery pack being capable of trouble free service.
In order to which Rapid matching optimization, verifying can be carried out to precharging circuit parameter at battery pack connection box exploitation design initial stage
The state machine of BMS battery management system switches and controls main relay, the main relay of complete detection and high pressure sampled point
Etc. failures, need that quick full functionality and fault simulation can be carried out on rack at exploitation design initial stage, but lack at this stage
Complete the ready-made engine bench test system of above-mentioned complete function.
Chinese utility model patent CN105137377A discloses a kind of battery pack relay fault simulation injection test electricity
Road.The anode that the 4th relay connect box with battery pack in relay direct fault location box is connected, the other end and the 6th relay phase
Connection；The positive extra-high voltage of battery pack connection box draws interface and is connected with the 6th relay；MCU control panel and rack have four route beams
Connection, CAN_H, CAN_L, 12V and GND, with simulation box inside 5 relays be connected be respective control line just
Negative wiring.It can very easily simulate the failures such as the unexpected open circuit of relay, adhesion, and also comprising vehicle artificial capacitor and
Active discharge resistance, to guarantee using safe.
But the utility model mainly have the shortcomings that it is following:
1) the simulation preliminary filling process that carries out, main passive discharge process and DC charging handshake procedure etc. cannot be parameterized, is needed more
It changes electric elements to be simulated, wherein preliminary filling process includes preliminary filling resistance/capacitance parameter Rapid matching optimization, main passive electric discharge
Process includes the parameters Rapid matching such as time optimization etc.；
2) failures such as comprehensive parameterization analogue relay adhesion disconnection are unable to, the sensor fault of high pressure sampled point cannot
The judgment threshold and Rule of judgment of test failure；
3) there are high-voltage capacitance circuit, frequent pre- charge/discharge and the maloperation thus caused, it may cause component part
The excessively high problem of temperature, there are security risks；
4) it when equivalent resistance is smaller and equivalent capacity is larger, has higher requirements to high voltage power supply power, tests economy
With efficiency deficiency.
Utility model content
The purpose of this utility model is to provide the simulator and control method of a kind of battery pack connection box, solves existing
Test device is difficult to the problem of battery pack connects box design initial stage progress full functionality verifying and fault simulation.
To achieve the above object, the utility model provides a kind of simulator of battery pack connection box, including power electric
Pond packet analog module, vehicle load DC export analog module, DC charging analog module, switch control module, high pressure sampling
Module,
Power battery pack analog module after connecting with switch control module, is connect with high pressure sampling module；
Vehicle load DC exports analog module, after connecting with switch control module, connect with high pressure sampling module；
DC charging analog module after connecting with switch control module, is connect with high pressure sampling module；
Switch control module, the switch including being separately connected above-mentioned modules, switch control module control respective switch
Disconnection and closure, high pressure sampling module acquires the corresponding voltage of different conditions；Wherein
The simulator of battery pack connection box is connected to testboard bay, switch control module receive voltage control signal and
Switch control signal, according to the disconnection of voltage control signal and switch control signal the control respective switch received with closure to adjust
The disconnection and closure of output voltage and switch are saved, high pressure sampling module acquires corresponding voltage signal, is based on collected voltage
Signal makes circuit fault diagnosis.
In one embodiment, the power battery pack analog module is the first high-voltage DC power supply；
The vehicle load DC exports analog module, is the second high-voltage DC power supply；
The DC charging analog module is third high-voltage DC power supply.
In one embodiment, the high pressure sampling module includes the first sampled point~the 7th sampled point,
First sampled point simulates power battery pack negative terminal sampled reference point；
Second sampled point simulates power battery pack anode sampled reference point；
Third sampled point simulates vehicle load DC and exports negative terminal sampled reference point；
4th sampled point simulates fuse rear end sampled reference point；
5th sampled point simulates vehicle load DC output plus terminal sampled reference point；
6th sampled point analog DC charging interface DC anode sampled reference point；
7th sampled point analog DC charging interface DC negative terminal sampled reference point.
In one embodiment, the switch control module is pacified by the first high voltage power supply safety switch~third high voltage power supply
Full switch, the first electric-controlled switch~the 13rd electric-controlled switch, the first protective resistance~the 7th protective resistance and vehicle load etc.
Imitate resistance composition.
In one embodiment, described first high voltage power supply safety switch one end is connected with the first high-voltage DC power supply, separately
One end is connected with the first sampled point and the second sampled point；
Described second high voltage power supply safety switch one end is connected with the second high-voltage DC power supply, the other end and third sampled point
It is connected with the 5th sampled point；
Described third high voltage power supply safety switch one end is connected with third high-voltage DC power supply.
In one embodiment, first electric-controlled switch is connected with the positive rear end of the first high voltage power supply safety switch,
Second electric-controlled switch is connected with the cathode rear end of the first high voltage power supply safety switch, and the 4th sampled point and the first electric-controlled switch are another
End is connected to simulate positive fuse, and the 4th sampled point is connected with the second electric-controlled switch other end to simulate cathode fuse；
Third electric-controlled switch one end is connected with the positive rear end of the second high voltage power supply safety switch, other end series connection the
It is connected after one protective resistance with the rear end of the first electric-controlled switch；
Cathode after the second protective resistance of 4th electric-controlled switch one end series connection with the second high voltage power supply safety switch
Rear end is connected, and the other end is connected with the 7th sampled point；
Anode after 5th electric-controlled switch one end series connection third protective resistance with the second high voltage power supply safety switch
Rear end is connected, and the other end is connected with the 6th sampled point；
6th electric-controlled switch and the 7th electric-controlled switch be connected on the first high voltage power supply safety switch cathode rear end and
Between the endpoint of the cathode rear end of second high voltage power supply safety switch；
7th electric-controlled switch and the 8th electric-controlled switch be connected on the second high voltage power supply safety switch cathode rear end and
Between the endpoint of the cathode rear end of third high voltage power supply safety switch；
Cathode after the 4th protective resistance of 9th electric-controlled switch one end series connection with the second high voltage power supply safety switch
Rear end is connected, and the other end is connected with the positive rear end of third high voltage power supply safety switch；
Anode after the 5th protective resistance of tenth electric-controlled switch one end series connection with the second high voltage power supply safety switch
Rear end is connected, and the other end is connected with the positive rear end of third high voltage power supply safety switch；
Described 11st electric-controlled switch one end, which is connected, to be connected after the 6th protective resistance with the 6th sampled point, the other end and the
The positive rear end of three high voltage power supply safety switches is connected；
Described 12nd electric-controlled switch one end, which is connected, to be connected after the 7th protective resistance with the 7th sampled point, the other end and the
The positive rear end of three high voltage power supply safety switches is connected；
After described 13rd electric-controlled switch one end series connection vehicle load equivalent resistance with the second high voltage power supply safety switch
Cathode rear end be connected, the other end is connected with the positive rear end of the second high voltage power supply safety switch.
In one embodiment, battery pack connects box simulator, according to the voltage control signal and switch control received
Signal, the first high voltage power supply safety switch (KS1)~third high voltage power supply safety switch (KS3), the first electric-controlled switch (K1)~
13rd electric-controlled switch (K13) carries out corresponding disconnect and closure, the first high-voltage DC power supply (HV1)~third high voltage direct current
Source (HV3) exports corresponding voltage and current.
In one embodiment, the first high voltage power supply safety switch (KS1)~third high voltage power supply safety switch
(KS3), the first electric-controlled switch (K1)~the 13rd electric-controlled switch (K13) carries out corresponding disconnection and closure, controls the first high pressure
DC power supply (HV1)~third high-voltage DC power supply (HV3) exports corresponding voltage and current, with analogue relay failure mistake
Journey sampled reference point failure process preliminary filling parameter optimisation procedure.
The utility model provides a kind of control method of simulator using above-mentioned battery pack connection box, including following
Step,
Testboard bay control system is given in the control folding instruction of BMS power-supply management system sending filter；
The control folding instruction of testboard bay control system receiving relay, issues voltage control signal and switch control signal
Box simulator is connected to battery pack；
Battery pack connects box simulator and adjusts output voltage according to the voltage control signal and switch control signal received
With the disconnection and closure of switch；
BMS power-supply management system, which acquires corresponding voltage by the high pressure sampling module that battery pack connects box simulator, to be believed
Number, corresponding circuit fault diagnosis is made according to collected voltage signal.
In one embodiment, testboard bay control system receives the relay MCP/MCN/ of BMS power-supply management system
PCC/DCP/DCN control folding instruction, the first high voltage power supply safety switch~third of control battery pack connection box simulator
High voltage power supply safety switch, the first electric-controlled switch~the 13rd electric-controlled switch disconnection and closure, the first high-voltage DC power supply~
The output voltage and output electric current of third high-voltage DC power supply.
In one embodiment, the first high voltage power supply safety switch~the of box simulator is connected by control battery pack
Disconnection and closure in three high voltage power supply safety switches, the first electric-controlled switch~the 13rd electric-controlled switch to inductive switch, control the
One high-voltage DC power supply~third high-voltage DC power supply output voltage and output current value, analogue relay failure process adopt
Sample datum mark failure process preliminary filling parameter optimisation procedure.
A kind of simulator of battery pack connection box provided by the utility model, can more fully simulated battery packet connect
The function of box simultaneously simulates various fault modes, ensure that test can be carried out uninterruptedly, improves test economy and test effect
Rate.Specifically have the advantages that
1) can active parametric control simulate preliminary filling process, it is including preliminary filling resistance/capacitance parameter Rapid matching optimization, complete
Detect the processes such as preliminary filling failure, the main passive discharge process of active parametric control simulation, the parameters Rapid matching such as including the time in face
The processes such as optimization, active parametric control simulate DC charging handshake procedure；
2) it can more comprehensively parameterize analogue relay adhesion and disconnect failure, the sensor fault of high pressure sampled point, preliminary filling
And the dependent failure of discharge circuit；
3) actual high-voltage charging and discharging circuit is substituted by three low-power high-voltage DC power supplies, without using capacitor and electric discharge electricity
The components such as resistance avoid passing through the problem of replacement electric elements realize the parameter matching of different test items, avoid high-voltage safety
Problem and the excessively high problem of frequent preliminary filling or the resistance temperature of electric discharge.
Detailed description of the invention
The above and other feature of the utility model, property and advantage will pass through with reference to the accompanying drawings and examples
It describes and becomes apparent, identical appended drawing reference always shows identical feature in the accompanying drawings, in which:
Fig. 1 discloses the battery pack connection box schematic diagram of the prior art；
Fig. 2 discloses the circuit theory of the simulator of the battery pack connection box of an embodiment according to the present utility model
Figure；
Fig. 3 discloses the test block diagram of the simulator of the battery pack connection box of an embodiment according to the present utility model.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain reality
With novel, it is not used to limit utility model.
In order to solve the problems, such as that background technique exists, the utility model proposes a kind of simulators of battery pack connection box
And its control method, battery pack connection box simulator include power battery analog module, vehicle load DC output simulation mould
Block, DC charging analog module, switch control module and high pressure sampling module.
In the embodiment shown in Figure 2, the power battery analog module of battery pack connection box simulator is the first high pressure
DC power supply HV1, the power electric using the multistage RC model of battery (internal resistance capacitor model), for accurate simulation different characteristics
Pond.
It is the second high-voltage DC power supply HV2 that vehicle load DC, which exports analog module, in different DC terminal capacitors and preliminary filling
Under resistance and preliminary filling relay switch state, preliminary filling process voltage change curve is simulated, thus true simulated high-pressure battery
Virtual voltage situation of change of the DC output end in upper and lower high pressure electric process.
DC charging analog module is third high-voltage DC power supply HV3, simulates DC direct-current charging post or high pressure sampled reference
Point failure.
Switch control module be the first high voltage power supply safety switch KS1~third high voltage power supply safety switch KS3, first electricity
Control the electric-controlled switch K13 of switch K1~the 13rd, the first protective resistance Rs7 of protective resistance Rs1~the 7th, vehicle load equivalent resistance
R_Veh。
High pressure sampling module is the first sampled point BAT_N, the second sampled point BAT_P, third sampled point VEH_N, the 4th adopts
Sampling point FUSE_P FUSE_N, the 5th sampled point VEH_P, the 6th sampled point DC_P and the 7th sampled point DC_N.First sampled point
BAT_N, for simulating power battery pack negative terminal sampled reference point, the second sampled point BAT_P, for simulating power battery pack anode
Sampled reference point, third sampled point VEH_N, for simulating vehicle load DC output negative terminal sampled reference point, the 4th sampled point
FUSE_P FUSE_N, for simulating fuse rear end sampled reference point, the 5th sampled point VEH_P is straight for simulating vehicle load
Flow output plus terminal sampled reference point, the 6th sampled point DC_P, be used for analog DC charging interface DC anode sampled reference point, the 7th
Sampled point DC_N is used for analog DC charging interface DC negative terminal sampled reference point.
The first described high voltage power supply one end safety switch KS1 is connected with the first high-voltage DC power supply HV1, the other end and
Two sampled point BAT_P and the first sampled point BAT_N sampled point are connected.
The second described high voltage power supply one end safety switch KS2 is connected with the second high-voltage DC power supply HV2, the other end and
Three sampled point VEH_N and the 5th sampled point VEH_P are connected.
Described third high voltage power supply one end safety switch KS3 is connected with third high-voltage DC power supply (HV3).
It is connected after the first electric-controlled switch K1 and the anode of the first high voltage power supply safety switch KS1, second is automatically controlled
It is connected after switch K2 and the cathode of the first high voltage power supply safety switch KS1.
4th sampled point FUSE_P FUSE_N, for simulating fuse rear end sampled reference point.When simulated battery packet connects
When the fuse of box is connected to the situation of battery pack anode, the first electric-controlled switch K1 is for simulating positive fuse, the 4th sampling
Point FUSE_P is connected with the first electric-controlled switch K1 other end, when the fuse of simulated battery packet connection box is connected to battery pack cathode
Situation when, for the second electric-controlled switch K2 for simulating cathode fuse, the 4th sampled point FUSE_N and the second electric-controlled switch K2 are another
One end is connected.
Described third one end electric-controlled switch K3 is connected with the positive rear end of the second high voltage power supply safety switch KS2, another
It is connected after the first protective resistance Rs1 of end series connection with the rear end of the first electric-controlled switch K1.
It is safe with the second high voltage power supply after 4th one end electric-controlled switch K4 series connection protection, the second protective resistance Rs2
The cathode rear end of switch KS2 is connected, and the other end is connected with the 7th sampled point DC_N.
It is safe with the second high voltage power supply after 5th one end electric-controlled switch K5 series connection protection third protective resistance Rs3
The positive rear end of switch KS2 is connected, and the other end is connected with the 6th sampled point DC_P, the 5th electric-controlled switch K5 and the 4th electric-controlled switch
K4 distinguishes the positive relay DCP and negative relay DCN of DC charging of analog DC charging.
The 6th electric-controlled switch K6 and the 7th electric-controlled switch K7 is connected on the negative of the first high voltage power supply safety switch KS1
Between pole rear end and the endpoint of the cathode rear end of the second high voltage power supply safety switch KS2, the 6th electric-controlled switch K6 and the 7th is automatically controlled
Switch K7 is for simulating main negative relay MCN.
The 7th electric-controlled switch K7 and the 8th electric-controlled switch K8 is connected on the negative of the second high voltage power supply safety switch KS2
Between pole rear end and the endpoint of the cathode rear end of third high voltage power supply safety switch KS3.
Described the 9th one end electric-controlled switch K9 connect after the 4th protective resistance Rs4 with the second high voltage power supply safety switch
The cathode rear end of KS2 is connected, and the other end is connected with the positive rear end of third high voltage power supply safety switch KS3.
Described the tenth one end electric-controlled switch K10 connect after the 5th protective resistance Rs5 with the second high voltage power supply safety open
The positive rear end for closing KS2 is connected, and the other end is connected with the positive rear end of third high voltage power supply safety switch KS3.
Described the 11st one end electric-controlled switch K11 connect after the 6th protective resistance Rs6 with the 6th sampled point DC_P phase
Even, the other end is connected with the positive rear end of third high voltage power supply safety switch KS3.
Described the 12nd one end electric-controlled switch K12 connect after the 7th protective resistance Rs7 with the 7th sampled point DC_N phase
Even, the other end is connected with the positive rear end of third high voltage power supply safety switch KS3.
After described 13rd one end electric-controlled switch K13 series connection vehicle load equivalent resistance R_Veh with the second high-voltage electricity
The cathode rear end of source safety switch KS2 is connected, and the other end is connected with the positive rear end of the second high voltage power supply safety switch KS2.
The test schematic of the simulator is as shown in Figure 3.Testboard bay control system 22 receives BMS battery management system
21 relay control instruction issues voltage control signal and switch control signal to battery pack connection box simulator 23.Electricity
The programmable power supply in signal control battery pack connection box simulator 23 is pressed to export corresponding voltage, switch control signal control electricity
Disconnection and closure in Chi Bao connection box simulator 23 to inductive switch, BMS battery management system 21 is by connecting battery pack
The high pressure sampling module of box simulator 23 samples, and makes corresponding relay control command and based on collected voltage signal
Fault diagnosis is carried out, so that feedback loop is formed, the running environment of real simulation battery pack.
In one embodiment, testboard bay control system 22 is by judging relay driving end-coil voltage, to judge
The relay control instruction that BMS battery management system 21 is sent.
The relay control instruction that BMS battery management system 21 issues is divided into main positive relay MCP control signal, master bears
Relay MCN controls signal, preliminary filling relay PCC control signal, the positive relay DCP control signal of DC charging and DC charging
Negative relay DCN controls five kinds of signals of signal.
Battery pack connects box simulator can receive the relay of BMS battery management system by testboard bay control system
Device control instruction (MCP/MCN/PCC/DCP/DCN), and can be by controlling the first high voltage power supply safety switch (KS1)~third
In high voltage power supply safety switch (KS3), the first electric-controlled switch (K1)~the 13rd electric-controlled switch (K13) to the disconnection of inductive switch with
Closure controls the output voltage and output current value of the first high-voltage DC power supply (HV1)~third high-voltage DC power supply (HV3),
Analogue relay failure process sampled reference point failure process preliminary filling parameter optimisation procedure.
When battery pack connects box normal work, different states is switched according to different instructions, is illustrated in detail below, battery
Packet connects box state machine change procedure in normal work.
State transformation signal is divided into three kinds, respectively HV_OFF, HV_ON, DC_CHARGE signal, and HV_OFF signal is will
Battery pack is set as no High voltage output state, and HV_ON signal is that battery pack is provided with High voltage output state, DC_CHARGE
Signal is to set DC charging state for battery pack.There are two kinds of forms in corresponding state transformation signal, be divided into state and ask again
Ask signal and status confirmation signal.
Battery pack connects box in actual work, and entire car controller function issues HV_OFF, HV_ON or DC_CHARGE shape
State request signal, request switch into corresponding state, and BMS battery management system is responsible for switching state, receives vehicle control
After HV_OFF, HV_ON or DC_CHARGE state request signal that device processed issues, the master that box is connected by control battery pack it is negative after
Electric appliance MCN, main positive relay MCP, preliminary filling relay PCC, the positive relay DCP of DC charging, the negative relay DCN of DC charging
The switching of HV_OFF, HV_ON, DC_CHARGE signal corresponding states is realized in switch motion, and it is corresponding to feed back to entire car controller
Status confirmation signal.
Test device in the embodiment shown in Figure 2, testboard bay control system 22 simulate entire car controller, issue
HV_OFF, HV_ON or DC_CHARGE state request signal receive corresponding status confirmation signal.Battery pack connects box simulation dress
23 output voltages for controlling corresponding high-voltage DC power supply by the voltage control signal received are set, are believed by the switch control received
Number control respective switch disconnection and closure, to simulate switch motion and the state transformation of corresponding relay.BMS battery management
System 21 receives battery pack and connects the 23 collected voltage signal of mesohigh sampling module of box simulator, and according to collected
Voltage signal feeds back corresponding status confirmation signal to testboard bay control system 22.
It is the relevant operation during state transformation in normal work of battery pack connection box simulator 23 below, is divided into
Following four state transformation process:
N1) battery pack is without High voltage output state (HV_OFF): battery pack connects box simulator 23 and the first high straightening is arranged
The voltage of galvanic electricity source HV1 keeps the first high voltage power supply safety switch KS1, the 6th electric-controlled switch K6 closure to battery pack total voltage,
According to system architecture, needs the fuse of simulated battery packet connection box to be connected to battery pack anode, be then closed the first electric-controlled switch
K1 needs the fuse of simulated battery packet connection box to be connected to battery pack negative terminal, is then closed the second electric-controlled switch K2.
N2) enter battery without High voltage output state (HV_OFF) from battery pack and be surrounded by High voltage output state (HV_ON): complete
At N1) operation after, keep the second high voltage power supply safety switch KS2 closure, testboard bay control system 22 is according to BMS battery management
The relay instruction (MCP/MCN/PCC) of system 21 controls signal, and the third of control battery pack connection box simulator 23 is automatically controlled
Switch K3, the 7th electric-controlled switch K7 closure.
When the negative relay MCN close command of the master that testboard bay control system 22 receives BMS battery management system 21, survey
Test stand frame control system 22 sends control command and connects box simulator 23 to battery pack, is closed the 7th electric-controlled switch K7.
When the positive relay MCP close command of the master that testboard bay control system 22 receives BMS battery management system 21, survey
Test stand frame control system 22 sends control command and connects box simulator 23 to battery pack, is closed third electric-controlled switch K3.
When testboard bay control system 22, which receives BMS battery management system 21, issues preliminary filling relay PCC close command,
Testboard bay control system 22 sends control command and connects box simulator 23 to battery pack, controls the second high-voltage DC power supply
HV2 output voltage and output current value, according to the equivalent capacity that the preliminary filling resistance and vehicle of setting load, simulation precharge is buckled
Line output voltage and preliminary filling electric current.
Battery pack connects box in actual work, and entire car controller issues HV_ON state request signal and gives BMS battery management system
System, BMS battery management system respond switching state, send control signal and give battery pack connection box first radial preliminary filling process,
Then the main positive relay MCP and major-minor relay MCN of closure.
Test device in the embodiment shown in Figure 2, testboard bay control system 22 simulate entire car controller, issue
HV_ON state request signal is responded to BMS battery management system 21, BMS battery management system 21, sends control signal to survey
Test stand frame control system 22, control battery pack connection box simulator 23 is by adjusting the second high-voltage DC power supply HV2 voltage-mode
Quasi- preliminary filling process voltage variation, be then closed by third electric-controlled switch K3, the 7th electric-controlled switch K7 simulate closure it is main just after
Electric appliance MCP and major-minor relay MCN.
N3) being surrounded by High voltage output (HV_ON) entrance without High voltage output (HV_OFF) or battery from battery pack has DC charging
State (DC_CHARGE): N1 is completed) and N2) after relevant operation, KS3 is kept to disconnect.
When the negative relay DCN of DC charging that testboard bay control system 22 receives the sending of BMS battery management system 21 is closed
When closing instruction, testboard bay control system 22 sends control command and connects box simulator 23 to battery pack, and closure the 4th is automatically controlled
Switch K4.
When the positive relay DCP of DC charging that testboard bay control system 22 receives the sending of BMS battery management system 21 is closed
When closing instruction, testboard bay control system 22 sends control command and connects box simulator 23 to battery pack, and closure the 5th is automatically controlled
Switch K5.
N4) from having High voltage output state (HV_ON) or DC charging state (DC_CHARGE) into no High voltage output state
(HV_OFF):
When the negative relay DCN of DC charging that testboard bay control system 22 receives the sending of BMS battery management system 21 is disconnected
When opening instruction, testboard bay control system 22 sends control command and connects box simulator 23 to battery pack, and it is automatically controlled to disconnect the 4th
Switch K4.
When the positive relay DCP of DC charging that testboard bay control system 22 receives the sending of BMS battery management system 21 is disconnected
When opening instruction, testboard bay control system 22 sends control command and connects box simulator 23 to battery pack, and it is automatically controlled to disconnect the 5th
Switch K5.
When testboard bay control system 22 receives the negative relay MCN open command of master of the sending of BMS battery management system 21
When, testboard bay control system 22 sends control command and connects box simulator 23 to battery pack, disconnects the 7th electric-controlled switch K7.
When testboard bay control system 22 receives the positive relay MCP open command of master of the sending of BMS battery management system 21
When, testboard bay control system 22 sends control command and connects box simulator 23 to battery pack, disconnects third electric-controlled switch K3.
When testboard bay control system 22 receive the positive relay MCP of master or main negative of the sending of BMS battery management system 21 after
When any open command of electric appliance MCN, according to actively or passively discharge circuit parameter characteristic, the control of testboard bay control system 22 the
Two high-voltage DC power supply HV2 output voltages, simulated battery DC output end discharge voltage.
Second high-voltage DC power supply HV2 simulates the capacitive characteristics bring high-pressure gradual change process of vehicle load.Actively or by
What dynamic discharge circuit referred to is all the circuit of vehicle load.So-called vehicle load refers to the electrical appliances such as driving motor end, due to driving
Motor capacitive is larger, and after battery pack is without High voltage output, due to capacitive energy storage, the circuit of vehicle load will also be kept in the long period
High pressure conditions, this can be accelerated whole by increasing active discharge circuit, such as active discharged in series resistance than relatively hazardous
The rate of decay of the circuit high pressure conditions of vehicle load.
Battery pack connects box simulator 23 can connect the events such as the relay generation short circuit of box, adhesion with simulated battery packet
Hinder, under various relay fault modes detailed below, battery pack connects the respective operations that box simulator 23 carries out.
Relay fault mode is divided into CF1 to CF10, totally ten kinds of fault modes.
CF1) main positive relay MCP preliminary filling relay PCC adhesion fault
Such fault mode generates during following two state or state transformation, corresponding battery pack connection box simulation
The relevant operation of device 23 is as follows.
1) under no High voltage output state (HV_OFF): complete N1) operation after, keep the second high voltage power supply safety switch
KS2 is disconnected, and is closed third electric-controlled switch K3, to simulate main positive relay MCP adhesion fault.
2) from there is High voltage output state (HV_ON) into no High voltage output state (HV_OFF): complete N2) operation after, close
Third electric-controlled switch K3 is closed, testboard bay control system 22 sends HV_OFF state request signal to BMS battery management system 21,
It is required that into no High voltage output state.
When the negative relay MCN close command of the master that testboard bay control system 22 receives BMS battery management system 21, survey
Test stand frame control system 22 sends control command and connects box simulator 23 to battery pack, disconnects the 7th electric-controlled switch K7, simultaneously
According to actively or passively discharge circuit parameter characteristic, the second high-voltage DC power supply HV2 output voltage is controlled, simulated battery direct current is defeated
Outlet voltage, to simulate main positive relay MCP adhesion fault.
CF2) main negative relay MCN adhesion fault
Such fault mode generates during following two state or state transformation, corresponding battery pack connection box simulation
The relevant operation of device 23 is as follows.
1) under no High voltage output state (HV_OFF): complete N1) operation after, keep the second high voltage power supply safety switch
KS2 is disconnected, and is closed the 7th electric-controlled switch K7, to simulate main negative relay MCN adhesion fault.
2) from there is High voltage output state (HV_ON) into no High voltage output state (HV_OFF): complete N2) operation after, protect
The 7th electric-controlled switch K7 closure is held, testboard bay control system 22 sends HV_OFF status request to BMS battery management system 21
Signal, it is desirable that into no High voltage output state.
When the positive relay MCP open command of the master that testboard bay control system 22 receives BMS battery management system 21, survey
Test stand frame control system 22 sends control command and connects box simulator 23 to battery pack, is joined according to actively or passively discharge circuit
Number characteristic controls the second high-voltage DC power supply HV2 output voltage, simulated battery DC output end voltage, to simulate main negative relay
Device MCN adhesion fault.
CF3) the positive relay DCP adhesion fault of DC charging
Such fault mode generates during following three kinds of states or state transformation, corresponding battery pack connection box simulation
The relevant operation of device 23 is as follows.
1) under no High voltage output state (HV_OFF): complete N1) operation after, be closed the 5th electric-controlled switch K5, to simulate
The positive relay DCP adhesion fault of DC charging.
2) in the case where there is High voltage output state (HV_ON): complete N1) and N2) operate after, be closed the 5th electric-controlled switch K5, come
The positive relay DCP adhesion fault of analog DC charging.
3) from DC charging state (DC_CHARGE) into no High voltage output state (HV_OFF): completing N3) after operation,
The 5th electric-controlled switch K5 is kept to be closed, testboard bay control system 22 sends HV_OFF status request to BMS battery management system
Signal, it is desirable that into no High voltage output state.
When the DC charging cathode relay DCN that testboard bay control system 22 receives BMS battery management system 21 is disconnected
When instruction, testboard bay control system 22 sends control command and connects box simulator 23 to battery pack, and disconnection the 4th is automatically controlled to open
K4 is closed, the positive relay DCP adhesion fault of analog DC charging is carried out.
CF4) the negative relay DCN adhesion fault of DC charging
Such fault mode generates during following three kinds of states or state transformation, corresponding battery pack connection box simulation
The relevant operation of device 23 is as follows.
1) under no High voltage output state (HV_OFF): complete N1) operation after, be closed the 4th electric-controlled switch K4, to simulate
The negative relay DCN adhesion fault of DC charging.
2) in the case where there is High voltage output state (HV_ON): complete N1) and N2) operate after, be closed the 4th electric-controlled switch K4, come
The negative relay DCN adhesion fault of analog DC charging.
3) from DC charging state (DC_CHARGE) into no High voltage output state (HV_OFF): completing N3) after operation,
The 4th electric-controlled switch K4 is kept to be closed, testboard bay control system 22 sends HV_OFF state to BMS battery management system 21 and asks
Seek signal, it is desirable that into no High voltage output state.
When the DC charging anode relay DCP that testboard bay control system 22 receives BMS battery management system 21 is disconnected
When instruction, testboard bay control system 22 sends control command and connects box simulator 23 to battery pack, and disconnection the 5th is automatically controlled to open
K5 is closed, the negative relay DCN adhesion fault of analog DC charging is carried out.
CF5) main positive relay MCP cannot be closed failure
Such fault mode generates during following two state or state transformation, corresponding battery pack connection box simulation
The relevant operation of device 23 is as follows.
1) from no High voltage output state (HV_OFF) enter have High voltage output state (HV_ON): complete N1) operation after, when
When testboard bay control system 22 receives master's negative relay MCN close command of BMS battery management system, testboard bay control system
System 22 sends control command and connects box simulator 23, the second high voltage power supply safety switch KS2 of closure, closure the 7th to battery pack
Electric-controlled switch K7.
When testboard bay control system 22 receives the preliminary filling relay PCC close command of BMS battery management system, test
Pedestal control system 22 sends control command and connects box simulator 23 to battery pack, and the second high-voltage DC power supply HV2 of control is defeated
Voltage and output current value out, according to the equivalent capacity that the preliminary filling resistance and vehicle of setting load, simulation pre-charge pressure curve is defeated
Voltage and preliminary filling electric current out.
When testboard bay control system 22 receives the preliminary filling relay PCC open command of BMS battery management system 21, survey
Test stand frame control system 22 sends control command and connects box simulator 23 to battery pack, special according to passive discharge circuit parameter
Property, control the second high-voltage DC power supply HV2 output voltage, simulated battery DC output end voltage.
When the negative relay MCN open command of the master that testboard bay control system 22 receives BMS battery management system 21, survey
Test stand frame control system 22 sends control command and connects box simulator 23 to battery pack, disconnects the 7th electric-controlled switch K7.
2) at High voltage output state (HV_ON): complete N1) and N2) operate after, when testboard bay control system 22 receives
When the positive relay MCP close command of the master of BMS battery management system, testboard bay control system 22 sends control command to battery
Packet connection box simulator 23 controls the second high-voltage DC power supply HV2 output voltage according to passive discharge circuit parameter characteristic,
Simulated battery DC output end voltage.
When the negative relay MCN open command of the master that testboard bay control system 22 receives BMS battery management system 21, survey
Test stand frame control system 22 sends control command and connects box simulator 23 to battery pack, disconnects the 7th electric-controlled switch K7.
CF6) main negative relay MCN cannot be closed failure
Such fault mode generates during following two state or state transformation, corresponding battery pack connection box simulation
The relevant operation of device 23 is as follows.
1) from no High voltage output state (HV_OFF) enter have High voltage output state (HV_ON): complete N1) operation after, when
When testboard bay control system 22 receives master's negative relay MCN close command of BMS battery management system 21, testboard bay control
System 22 sends control command and connects box simulator 23 to battery pack, is closed the second high voltage power supply safety switch KS2, disconnects the
Seven electric-controlled switch K7, whole process the second high-voltage DC power supply HV2 output voltage of holding is 0 and output preliminary filling electric current is 0.
2) at High voltage output state (HV_ON): complete N1) and N2) operate after, when testboard bay control system 22 receives
When the negative relay MCN close command of the master of BMS battery management system 21, testboard bay control system 22 sends control command to electricity
Chi Bao connection box simulator 23 disconnects the 7th electric-controlled switch K7, is closed third electric-controlled switch K3, is joined according to passive discharge circuit
Number characteristic, controls the second high-voltage DC power supply HV2 output voltage, simulated battery DC output end voltage.
When the positive relay MCP open command of the master that testboard bay control system 22 receives BMS battery management system 21, survey
Test stand frame control system 22 sends control command and connects box simulator 23 to battery pack, disconnects third electric-controlled switch K3.
CF7) preliminary filling relay PCC cannot be closed failure
Such fault mode generates during a kind of following state transformation, and corresponding battery pack connects box simulator 23
Relevant operation it is as follows.
1) from no High voltage output state (HV_OFF) enter have High voltage output state (HV_ON): complete N1) operation after, when
When testboard bay control system 22 receives master's negative relay MCN close command of BMS battery management system 21, testboard bay control
System 22 sends control command and connects box simulator 23 to battery pack, is closed the second high voltage power supply safety switch KS2, closure the
Seven electric-controlled switch K7, whole process the second high-voltage DC power supply HV2 output voltage of holding is 0 and output preliminary filling electric current is 0.
CF8) the positive relay DCP of DC charging cannot be closed failure
Such fault mode generates during following three kinds of state transformations, and corresponding battery pack connects box simulator 23
Relevant operation it is as follows.
1) from no High voltage output state (HV_OFF) enter DC charging state (DC_CHARGE): complete N1) operation after,
When the positive relay DCP close command of the DC charging that testboard bay control system 22 receives the sending of BMS battery management system 21,
Testboard bay control system 22 sends control command and connects box simulator 23 to battery pack, keeps the 5th electric-controlled switch K5 disconnected
It opens.
2) from there is High voltage output state (HV_ON) into DC charging state (DC_CHARGE): completing N1) and N2) operation
Afterwards, when testboard bay control system 22 receives the positive relay DCP close command of DC charging of the sending of BMS battery management system 21
When, testboard bay control system 22 sends control command and connects box simulator 23 to battery pack, keeps the 5th electric-controlled switch K5
It disconnects.
3) at DC charging state (DC_CHARGE): complete N1), N2) and N3) operate after, when testboard bay control be
When system 22 receives the DC charging positive relay DCP close command of the sending of BMS battery management system 21, testboard bay control system
22, which send control command, connects box simulator 23 to battery pack, disconnects the 5th electric-controlled switch K5.
CF9) the negative relay DCN of DC charging cannot be closed failure
Such fault mode generates during following three kinds of state transformations, and corresponding battery pack connects box simulator 23
Relevant operation it is as follows.
1) from no High voltage output state (HV_OFF) enter DC charging state (DC_CHARGE): complete N1) operation after,
When the negative relay DCN close command of the DC charging that testboard bay control system 22 receives the sending of BMS battery management system 21,
Testboard bay control system 22 sends control command and connects box simulator 23 to battery pack, keeps the 4th electric-controlled switch K4 disconnected
It opens.
2) from there is High voltage output state (HV_ON) into DC charging state (DC_CHARGE): completing N1) and N2) operation
Afterwards, when testboard bay control system 22 receives the negative relay DCN close command of DC charging of the sending of BMS battery management system 21
When, testboard bay control system 22 sends control command and connects box simulator 23 to battery pack, keeps the 4th electric-controlled switch K4
It disconnects.
3) at DC charging state (DC_CHARGE): complete N1), N2) and N3) operate after, when testboard bay control be
When system 22 receives the DC charging negative relay DCN close command of the sending of BMS battery management system 21, testboard bay control system
22, which send control command, connects box simulator 23 to battery pack, disconnects the 4th electric-controlled switch K4.
CF10) fuse disconnects failure
When with fuse, in anode, the relevant operation of corresponding battery pack connection box simulator 23 is as follows.
1) under no High voltage output state (HV_OFF): complete N1) operation after, testboard bay control system 22 send control
It orders and connects box simulator 23 to battery pack, disconnect the first electric-controlled switch K1.
2) in the case where there is High voltage output state (HV_ON): complete N1) and N2) operate after, testboard bay control system 22 send
Control command connects box simulator 23 to battery pack, disconnects the first electric-controlled switch K1, is closed at third electric-controlled switch K3, root
According to passive discharge circuit parameter characteristic, the second high-voltage DC power supply HV2 output voltage, simulated battery DC output end electricity are controlled
Pressure.
When the positive relay MCP open command of the master that testboard bay control system 22 receives BMS battery management system 21, survey
Test stand frame control system 22 sends control command and connects box simulator 23 to battery pack, disconnects third electric-controlled switch K3.
When the negative relay MCN open command of the master that testboard bay control system 22 receives BMS battery management system 21, survey
Test stand frame control system 22 sends control command and connects box simulator 23 to battery pack, disconnects the 7th electric-controlled switch K7.
It, will be to the first electricity in the relevant operation of corresponding battery pack connection box simulator 23 when fuse is in negative terminal
The relevant operation of control switch K1 is changed to the operation to the second electric-controlled switch K2.Other operating procedures remain unchanged.
Battery pack connects box simulator 23 can connect the sampled reference point failure process of box with simulated battery packet, correspond to
Battery pack connects the high pressure sampling module fault mode of box simulator 23, the various failures of high pressure sampling module detailed below
Under mode, battery pack connects the respective operations that box simulator 23 carries out.
High pressure sampling module fault mode, is divided into SF1 to SF6, totally six kinds of fault modes.
SF1) the second sampled point BAT_P samples failure
Such fault mode generates in following two state, the related behaviour of corresponding battery pack connection box simulator 23
Make as follows.
1) under no High voltage output state (HV_OFF): complete N1) operation after, control the first high-voltage DC power supply HV1 it is defeated
The first high-voltage DC power supply HV1 output voltage values are arranged in voltage out.
In battery pack discharge process, the first high-voltage DC power supply HV1 output voltage values of setting are lower than the second high voltage direct current
Power supply HV2 voltage.At this point, the second high-voltage DC power supply HV2 voltage value is the voltage value of the 5th sampled point VEH_P.
In battery pack charging process, the first high-voltage DC power supply HV1 output voltage values of setting are higher than the second high voltage direct current
Power supply HV2 voltage and third high-voltage DC power supply HV3 voltage.At this point, the second high-voltage DC power supply HV2 voltage value is the 5th sampling
The voltage value of point VEH_P, third high-voltage DC power supply HV3 voltage value are the voltage value of the 6th sampled point DC_P.
2) in the case where there is High voltage output state (HV_ON): complete N1) and N2) operate after, control the first high-voltage DC power supply
The first high-voltage DC power supply HV1 output voltage values are arranged in HV1 output voltage.
In battery pack discharge process, the first high-voltage DC power supply HV1 output voltage values of setting are lower than the second high voltage direct current
Power supply HV2 voltage.At this point, the second high-voltage DC power supply HV2 voltage value is the voltage value of the 5th sampled point VEH_P.
In battery pack charging process, the first high-voltage DC power supply HV1 output voltage values of setting are higher than the second high voltage direct current
Power supply HV2 voltage and third high-voltage DC power supply HV3 voltage.At this point, the second high-voltage DC power supply HV2 voltage value is the 5th sampling
The voltage value of point VEH_P, third high-voltage DC power supply HV3 voltage value are the voltage value of the 6th sampled point DC_P.
SF2) third sampled point VEH_N samples failure
Such fault mode generates in following three kinds of states, the related behaviour of corresponding battery pack connection box simulator 23
Make as follows.
1) under no High voltage output state (HV_OFF): complete N1) operation after, testboard bay control system 22 send control
It orders and gives battery pack connection box simulator 23, disconnect the 13rd electric-controlled switch K13, the 8th electric-controlled switch K8 of closure, closure the
Three high voltage power supply safety switch KS3, the 9th electric-controlled switch K9 of closure, are arranged third high-voltage DC power supply HV3 output voltage values, make
Its voltage value for being greater than the 5th sampled point VEH_P.
At this point, third high-voltage DC power supply HV3 output voltage values are the voltage value of third sampled point VEH_N, that is to say, that
The voltage value of third sampled point VEH_N is greater than the voltage value of the 5th sampled point VEH_P.
2) in the case where there is High voltage output state (HV_ON) or under DC charging state (DC_CHARGE): complete N1) and N2) grasp
After work, testboard bay control system 22 sends control command and connects box simulator 23 to battery pack, is closed third electric-controlled switch
K3 disconnects the 7th electric-controlled switch K7, and the second high-voltage DC power supply HV2 output voltage values are arranged, make itself and third sampled point VEH_N
Voltage difference, hence it is evident that be less than or greater than battery pack voltage range.
At this point, the second high-voltage DC power supply HV2 output voltage values are the voltage value of the 5th sampled point VEH_P.
SF3) the 4th sampled point FUSE_P FUSE_N sample failure/fuse failure
Such fault mode generates in following two state, the related behaviour of corresponding battery pack connection box simulator 23
Make as follows.
1) under no High voltage output state (HV_OFF): complete N1) operation after, control the first high-voltage DC power supply HV1 it is defeated
The first high-voltage DC power supply HV1 output voltage values are arranged in voltage out.
In battery pack discharge process, the first high-voltage DC power supply HV1 output voltage values of setting are lower than the second high voltage direct current
Power supply HV2 voltage.At this point, the second high-voltage DC power supply HV2 voltage value is the voltage value of the 5th sampled point VEH_P.
In battery pack charging process, the first high-voltage DC power supply HV1 output voltage values of setting are higher than the second high voltage direct current
Power supply HV2 voltage and third high-voltage DC power supply HV3 voltage.At this point, the second high-voltage DC power supply HV2 voltage value is the 5th sampling
The voltage value of point VEH_P, third high-voltage DC power supply HV3 voltage value are the voltage value of the 6th sampled point DC_P.
2) in the case where there is High voltage output state (HV_ON): complete N1) and N2) operate after, control the first high-voltage DC power supply
The first high-voltage DC power supply HV1 output voltage values are arranged in HV1 output voltage.
In battery pack discharge process, the first high-voltage DC power supply HV1 output voltage values of setting are lower than the second high voltage direct current
Power supply HV2 voltage.At this point, the second high-voltage DC power supply HV2 voltage value is the voltage value of the 5th sampled point VEH_P.
In battery pack charging process, the first high-voltage DC power supply HV1 output voltage values of setting are higher than the second high voltage direct current
Power supply HV2 voltage and third high-voltage DC power supply HV3 voltage.At this point, the second high-voltage DC power supply HV2 voltage value is the 5th sampling
The voltage value of point VEH_P, third high-voltage DC power supply HV3 voltage value are the voltage value of the 6th sampled point DC_P.
SF4) the 5th sampled point VEH_P samples failure
Such fault mode generates in following three kinds of states, the related behaviour of corresponding battery pack connection box simulator 23
Make as follows.
1) under no High voltage output state (HV_OFF): complete N1) operation after, testboard bay control system 22 send control
It orders and gives battery pack connection box simulator 23, disconnect the 13rd electric-controlled switch K13, the 8th electric-controlled switch K8 of closure, closure the
Three high voltage power supply safety switch KS3, the tenth electric-controlled switch K10 of closure, are arranged third high-voltage DC power supply HV3 output voltage values,
It is set to be less than the voltage value of third sampled point VEH_N.
At this point, third high-voltage DC power supply HV3 output voltage values are the voltage value of the 5th sampled point VEH_P, that is to say, that
That is voltage value of the voltage value of third sampled point VEH_N greater than the 5th sampled point VEH_P.
2) in the case where there is High voltage output state (HV_ON) or under DC charging state (DC_CHARGE): complete N1) and N2) grasp
After work, be arranged the second high-voltage DC power supply HV2 output voltage values, make the voltage difference of itself and third sampled point VEH_N be much smaller than or
Greater than battery pack voltage range.
Or the second high-voltage DC power supply HV2 output voltage values of setting, it is adopted in battery pack charging process significantly lower than second
The voltage value of sampling point BAT_P is apparently higher than the voltage value of the second sampled point BAT_P in battery pack discharge process.
At this point, third high-voltage DC power supply HV3 output voltage values are the voltage value of the 5th sampled point VEH_P.
SF5) the 6th sampled point DC_P samples failure
Such fault mode generates in following three kinds of states, the related behaviour of corresponding battery pack connection box simulator 23
Make as follows.
1) under no High voltage output state (HV_OFF): complete N1) operation after, testboard bay control system 22 send control
It orders and gives battery pack connection box simulator 23, disconnect the 13rd electric-controlled switch K13, be closed the 8th electric-controlled switch K8, closure the
Three high voltage power supply safety switch KS3 are closed the 11st electric-controlled switch K11, and third high-voltage DC power supply HV3 output voltage is arranged
Value makes it less than the voltage value of the 7th sampled point DC_N, and third high-voltage DC power supply HV3 output voltage values are the 6th sampling at this time
The voltage value of point DC_P, therefore, voltage value of the voltage value less than the 7th sampled point DC_N of the 6th sampled point DC_P.
2) in the case where there is High voltage output state (HV_ON): complete N1) and N2) operate after, testboard bay control system 22 send
Control command connects box simulator 23 to battery pack, disconnects the 13rd electric-controlled switch K13, is closed the 8th electric-controlled switch K8, closes
Third high voltage power supply safety switch KS3 is closed, the 11st electric-controlled switch K11 is closed, setting third high-voltage DC power supply HV3 exports electricity
Pressure value makes the voltage difference of itself and the 7th sampled point DC_N, hence it is evident that is less than or greater than battery pack voltage range.
Or setting third high-voltage DC power supply HV3 output voltage values, it is adopted in battery pack charging process significantly lower than second
The voltage value of sampling point BAT_P.Third high-voltage DC power supply HV3 output voltage values are the voltage value of the 6th sampled point DC_P at this time.
3) at DC charging state (DC_CHARGE): complete N1), N2) and N3) operate after, testboard bay control system
System 22 sends control command and connects box simulator 23 to battery pack, disconnects the 5th electric-controlled switch K5, and closure the 11st is automatically controlled to be opened
K11 is closed, third high-voltage DC power supply HV3 output voltage values are set, make the voltage difference of itself and the 7th sampled point DC_N, hence it is evident that be less than
Or it is greater than battery pack voltage range.Or setting third high-voltage DC power supply HV3 output voltage values, it is bright in battery pack charging process
The aobvious voltage value lower than the second sampled point BAT_P.
SF6) the 7th sampled point DC_N samples failure
Such fault mode generates in following three kinds of states, the related behaviour of corresponding battery pack connection box simulator 23
Make as follows.
1) under no High voltage output state (HV_OFF): complete N1) operation after, testboard bay control system 22 send control
It orders and gives battery pack connection box simulator 23, disconnect the 13rd electric-controlled switch K13, the 8th electric-controlled switch K8 of closure, closure the
Three high voltage power supply safety switch KS3, the 12nd electric-controlled switch K12 of closure, are arranged third high-voltage DC power supply HV3 output voltage
Value, makes it higher than the voltage value of the 6th sampled point DC_P.
2) in the case where there is High voltage output state (HV_ON): complete N1) and N2) operate after, testboard bay control system 22 send
Control command connects box simulator 23 to battery pack, disconnects the 13rd electric-controlled switch K13, the 8th electric-controlled switch K8 of closure, closes
Third high voltage power supply safety switch KS3, the 12nd electric-controlled switch K12 of closure are closed, setting third high-voltage DC power supply HV3 exports electricity
Pressure value makes the voltage difference of itself and the 6th sampled point DC_P, hence it is evident that is less than or greater than battery pack voltage range.
3) at DC charging state (DC_CHARGE): complete N1), N2) and N3) operate after, testboard bay control system
System 22 sends control command and connects box simulator 23 to battery pack, disconnects the 4th electric-controlled switch K4, and closure the 12nd is automatically controlled to be opened
K12 is closed, third high-voltage DC power supply HV3 output voltage values are set, make the voltage difference of itself and the 6th sampled point DC_P, hence it is evident that be less than
Or it is greater than battery pack voltage range.
Battery pack connection box simulator 23 can simulate preliminary filling parameter optimisation procedure, various preliminary filling ginsengs detailed below
Under numberization simulation process, the respective operations that battery pack connection box simulator 23 carries out are stated.
Preliminary filling parameter optimization simulation process is divided into two kinds of simulation processes of EF1 and EF2.
EF1) pre-charging time parameter simulation
Complete N1) operation after, according to vehicle load equivalent capacity and equivalent resistance, design preliminary filling resistance it is big
It is small, weigh the contradiction of pre-charging time and preliminary filling electric current, not only guaranteed that pre-charging time was not too long, but also guarantees that preliminary filling electric current should not be too
Greatly.
The second high-voltage DC power supply HV2 output voltage values and current value are controlled, it is negative according to the preliminary filling resistance and vehicle of setting
The equivalent capacity of load, equivalent resistance simulate pre-charge pressure curve output voltage and preliminary filling electric current.
After design parameter is fixed, it can carry out preliminary filling time-out by regulating time parameter or cross the failures moulds such as flow short-circuit
It is quasi-.Time parameter, also known as time constant=preliminary filling resistance × equivalent capacity, according to the equivalent capacity and preliminary filling resistance of vehicle load
Regulating time parameter carries out the fault simulations such as pre-charging time.
EF2) main passive discharge time parameter simulation:
Complete N1) and after N2) operating, according to the equivalent capacity of vehicle load and main passive discharge resistance parameter, design quilt
The time parameter of dynamic electric discharge and active discharge, controls the second high-voltage DC power supply HV2 output voltage values and current value, according to setting
The passive discharge resistance of master and vehicle load equivalent capacity, equivalent resistance, the main passive circuit output voltage of simulation and electric current.
After designing fixed, the main passive fault simulations such as abnormal of discharging can be carried out by regulating time parameter.
A kind of simulator of battery pack connection box provided by the utility model, can more fully simulated battery packet connect
The function of box simultaneously simulates various fault modes, ensure that test can be carried out uninterruptedly, improves test economy and test effect
Rate.Specifically have the advantages that
1) can active parametric control simulate preliminary filling process, it is including preliminary filling resistance/capacitance parameter Rapid matching optimization, complete
Detect the processes such as preliminary filling failure, the main passive discharge process of active parametric control simulation, the parameters Rapid matching such as including the time in face
The processes such as optimization, active parametric control simulate DC charging handshake procedure；
2) it can more comprehensively parameterize analogue relay adhesion and disconnect failure, the sensor fault of high pressure sampled point, preliminary filling
And the dependent failure of discharge circuit；
3) actual high-voltage charging and discharging circuit is substituted by three low-power high-voltage DC power supplies, without using capacitor and electric discharge electricity
The components such as resistance avoid passing through the problem of replacement electric elements realize the parameter matching of different test items, avoid high-voltage safety
Problem and the excessively high problem of frequent preliminary filling or the resistance temperature of electric discharge.
Although for simplify explain the above method is illustrated to and is described as a series of actions, it should be understood that and understand,
The order that these methods are not acted is limited, because according to one or more embodiments, some movements can occur in different order
And/or with from it is depicted and described herein or herein it is not shown and describe but it will be appreciated by those skilled in the art that other
Movement concomitantly occurs.
As shown in the application and claims, unless context clearly prompts exceptional situation, " one ", "one", " one
The words such as kind " and/or "the" not refer in particular to odd number, may also comprise plural number.It is, in general, that term " includes " only prompts to wrap with "comprising"
Include clearly identify the step of and element, and these steps and element do not constitute one it is exclusive enumerate, method or apparatus
The step of may also including other or element.
Above-described embodiment, which is available to, is familiar with person in the art to realize or using the utility model, be familiar with ability
The personnel in domain can in the case where not departing from the utility model thought of the utility model, to above-described embodiment make various modifications or
Variation, thus the protection scope of the utility model is not limited by above-described embodiment, and should meet claims to mention
Inventive features maximum magnitude.
Claims (7)
1. a kind of simulator of battery pack connection box, which is characterized in that including power battery pack analog module, vehicle load is straight
Stream output analog module, DC charging analog module, switch control module, high pressure sampling module,
Power battery pack analog module after connecting with switch control module, is connect with high pressure sampling module；
Vehicle load DC exports analog module, after connecting with switch control module, connect with high pressure sampling module；
DC charging analog module after connecting with switch control module, is connect with high pressure sampling module；
Switch control module, the switch including being separately connected above-mentioned modules, switch control module control the disconnected of respective switch
It opens and is closed, high pressure sampling module acquires the corresponding voltage of different conditions；Wherein
The simulator of battery pack connection box is connected to testboard bay, and switch control module receives voltage control signal and switch
Signal is controlled, it is defeated to adjust according to the disconnection of voltage control signal and switch control signal the control respective switch received and closure
The disconnection and closure of voltage and switch out, high pressure sampling module acquire corresponding voltage signal, are based on collected voltage signal
Make circuit fault diagnosis.
2. the simulator of battery pack connection box according to claim 1, which is characterized in that
The power battery pack analog module, for the first high-voltage DC power supply (HV1)；
The vehicle load DC exports analog module, is the second high-voltage DC power supply (HV2)；
The DC charging analog module, for third high-voltage DC power supply (HV3).
3. the simulator of battery pack connection box according to claim 2, which is characterized in that the high pressure sampling module packet
The first sampled point~the 7th sampled point is included,
First sampled point (BAT_N) simulates power battery pack negative terminal sampled reference point；
Second sampled point (BAT_P) simulates power battery pack anode sampled reference point；
Third sampled point (VEH_N) simulates vehicle load DC and exports negative terminal sampled reference point；
4th sampled point (FUSE_P FUSE_N) simulation fuse rear end sampled reference point；
5th sampled point (VEH_P) simulates vehicle load DC output plus terminal sampled reference point；
6th sampled point (DC_P) analog DC charging interface DC anode sampled reference point；
7th sampled point (DC_N) analog DC charging interface DC negative terminal sampled reference point.
4. the simulator of battery pack according to claim 3 connection box, which is characterized in that the switch control module by
First high voltage power supply safety switch (KS1)~third high voltage power supply safety switch (KS3), the first electric-controlled switch (K1)~the 13rd
Electric-controlled switch (K13), the first protective resistance (Rs1)~the 7th protective resistance (Rs7) and vehicle load equivalent resistance (R_Veh)
Composition.
5. the simulator of battery pack connection box according to claim 4, which is characterized in that
First high voltage power supply safety switch one end (KS1) is connected with the first high-voltage DC power supply (HV1), the other end and first
Sampled point (BAT_N) is connected with the second sampled point (BAT_P)；
Second high voltage power supply safety switch one end (KS2) is connected with the second high-voltage DC power supply (HV2), the other end and third
Sampled point (VEH_N) is connected with the 5th sampled point (VEH_P)；
Third high voltage power supply safety switch one end (KS3) is connected with third high-voltage DC power supply (HV3).
6. the simulator of battery pack connection box according to claim 5, it is characterised in that:
First electric-controlled switch (K1) is connected with the positive rear end of the first high voltage power supply safety switch (KS1), and second automatically controlled opens
It closes (K2) to be connected with the cathode rear end of the first high voltage power supply safety switch (KS1), the 4th sampled point (FUSE_P FUSE_N) and the
One electric-controlled switch (K1) other end is connected to simulate positive fuse, the 4th sampled point (FUSE_P FUSE_N) and second automatically controlled
(K2) other end is switched to be connected to simulate cathode fuse；
Described third electric-controlled switch one end (K3) is connected with the positive rear end of the second high voltage power supply safety switch (KS2), the other end
It is connected after first protective resistance of connecting (Rs1) with the rear end of the first electric-controlled switch (K1)；
4th electric-controlled switch one end (K4) connect the second protective resistance (Rs2) after with the second high voltage power supply safety switch
(KS2) cathode rear end is connected, and the other end is connected with the 7th sampled point (DC_N)；
5th electric-controlled switch one end (K5) connect third protective resistance (Rs3) after with the second high voltage power supply safety switch
(KS2) positive rear end is connected, and the other end is connected with the 6th sampled point (DC_P)；
6th electric-controlled switch (K6) and the 7th electric-controlled switch (K7) are connected on the negative of the first high voltage power supply safety switch (KS1)
Between pole rear end and the endpoint of the cathode rear end of the second high voltage power supply safety switch (KS2)；
7th electric-controlled switch (K7) and the 8th electric-controlled switch (K8) are connected on the negative of the second high voltage power supply safety switch (KS2)
Between pole rear end and the endpoint of the cathode rear end of third high voltage power supply safety switch (KS3)；
9th electric-controlled switch one end (K9) connect the 4th protective resistance (Rs4) after with the second high voltage power supply safety switch
(KS2) cathode rear end is connected, and the other end is connected with the positive rear end of third high voltage power supply safety switch (KS3)；
Tenth electric-controlled switch one end (K10) connect the 5th protective resistance (Rs5) after with the second high voltage power supply safety switch
(KS2) positive rear end is connected, and the other end is connected with the positive rear end of third high voltage power supply safety switch (KS3)；
11st electric-controlled switch one end (K11) connect the 6th protective resistance (Rs6) after with the 6th sampled point (DC_P) phase
Even, the other end is connected with the positive rear end of third high voltage power supply safety switch (KS3)；
12nd electric-controlled switch one end (K12) connect the 7th protective resistance (Rs7) after with the 7th sampled point (DC_N) phase
Even, the other end is connected with the positive rear end of third high voltage power supply safety switch (KS3)；
13rd electric-controlled switch one end (K13) connect vehicle load equivalent resistance (R_Veh) after with the second high voltage power supply
The cathode rear end of safety switch (KS2) is connected, and the other end is connected with the positive rear end of the second high voltage power supply safety switch (KS2).
7. the simulator of battery pack connection box according to claim 4, which is characterized in that battery pack connects box simulation dress
It sets, according to the voltage control signal and switch control signal received, the first high voltage power supply safety switch (KS1)~third high-voltage electricity
Source safety switch (KS3), the first electric-controlled switch (K1)~the 13rd electric-controlled switch (K13) carry out corresponding disconnection and closure, the
One high-voltage DC power supply (HV1)~third high-voltage DC power supply (HV3) exports corresponding voltage and current.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920211069.7U CN209590218U (en) | 2019-02-18 | 2019-02-18 | The simulator of battery pack connection box |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920211069.7U CN209590218U (en) | 2019-02-18 | 2019-02-18 | The simulator of battery pack connection box |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109655739A (en) * | 2019-02-18 | 2019-04-19 | 上汽大众汽车有限公司 | The simulator and its control method of battery pack connection box |
| CN112848932A (en) * | 2021-01-15 | 2021-05-28 | 重庆长安新能源汽车科技有限公司 | Control method and control system for direct current charging of electric automobile |
| CN114545886A (en) * | 2020-11-24 | 2022-05-27 | 一汽-大众汽车有限公司 | Vehicle controller refreshing test bench and refreshing test method |
-
2019
- 2019-02-18 CN CN201920211069.7U patent/CN209590218U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109655739A (en) * | 2019-02-18 | 2019-04-19 | 上汽大众汽车有限公司 | The simulator and its control method of battery pack connection box |
| CN109655739B (en) * | 2019-02-18 | 2024-04-02 | 上汽大众汽车有限公司 | Simulation device of battery pack connection box and control method thereof |
| CN114545886A (en) * | 2020-11-24 | 2022-05-27 | 一汽-大众汽车有限公司 | Vehicle controller refreshing test bench and refreshing test method |
| CN112848932A (en) * | 2021-01-15 | 2021-05-28 | 重庆长安新能源汽车科技有限公司 | Control method and control system for direct current charging of electric automobile |
| CN112848932B (en) * | 2021-01-15 | 2022-05-31 | 重庆长安新能源汽车科技有限公司 | Control method and control system for direct current charging of electric automobile |
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