CN106696705B - The multi-load high-voltage direct module system of pure electric vehicle - Google Patents
The multi-load high-voltage direct module system of pure electric vehicle Download PDFInfo
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- CN106696705B CN106696705B CN201710001519.5A CN201710001519A CN106696705B CN 106696705 B CN106696705 B CN 106696705B CN 201710001519 A CN201710001519 A CN 201710001519A CN 106696705 B CN106696705 B CN 106696705B
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Abstract
The present invention relates to electric vehicle technical field of power systems, are concretely the multi-load high-voltage direct module system of pure electric vehicle, including central controller and vehicle load, it is characterised in that: central controller is in parallel with vehicle load；The central controller is made of high voltage power supply input bus, vehicle HS CAN bus, voltage sensor, vehicle-mounted low-tension supply, low pressure voltage-stablizer, control CPU module and communication interface, wherein control CPU module is made of analog signal conditioner module one, isolated fault diagnostic module, diagnosis and prediction module, user configuration apparent source distribution module, onboard diagnostics module and safety function module, the present invention can preferably combine high-voltage direct current and electric attachments, can reuse in different platform, can be with continuous updating to meet new technology specification.
Description
Technical field
The present invention relates to electric vehicle technical field of power systems, are concretely the multi-load high voltage direct current moulds of pure electric vehicle
Block system.
Background technique
The trend of vehicle electrical gasification proposes new demand and challenge to high pressure integrated component, especially in commercial vehicle and electronic
The combination field of vehicle, the market scale of construction is small, and height is broken up, and technology is immature.
Existing product feature:
A. it is directed to the modular electric energy management system of low voltage component, it is a series of to detect and control containing a central controller
Control the electric energy management module of low-voltage load.The interface of these modules or intermodule does not have the performance of high-pressure system, such as: high pressure
Interlocking, electromagnetic shielding, Earth Fault Detection, load precharge etc..If meeting these performances needs entirely different hardware design
And software control；
B. the high tension distribution system customized is able to satisfy the performance of high-pressure system, but since scalability is poor, cannot be flat at other
It is reused on platform.
Therefore, in order to high-voltage direct current and electric attachments are preferably combined, it is necessary to which one can weigh in different platform
The multiple high tension distribution system for using, new technology specification being met with continuous updating.
Summary of the invention
The problem that the present invention breaches the prior art devises one and can reuse, can continue more in different platform
Newly to meet the high tension distribution system of new technology specification.
In order to achieve the above object, the present invention devises the multi-load high-voltage direct module system of pure electric vehicle, including
Central controller and vehicle load, it is characterised in that: central controller is in parallel with vehicle load；The central controller is by high pressure
Power input bus, vehicle HS CAN bus, voltage sensor, vehicle-mounted low-tension supply, low pressure voltage-stablizer, control CPU module and
Communication interface composition, wherein control CPU module is by analog signal conditioner module one, isolated fault diagnostic module, diagnosis and prediction
Module, user configuration apparent source distribution module, onboard diagnostics module and safety function module composition, the high voltage power supply input are total
The firewire of line is connected with the side of the end A of voltage sensor, analog signal conditioner module one respectively, high voltage power supply input bus
Zero curve is divided into two-way and is connected respectively with the side of the end B of voltage sensor, analog signal conditioner module one, the C of voltage sensor
End is also connected with the side of analog signal conditioner module one, and vehicle-mounted low-tension supply is connected with the side of low pressure voltage-stablizer, and low pressure is steady
The other side of depressor is connected with low-tension supply, control CPU module respectively, and control CPU module is fixedly arranged above communication interface, leads to
The top of communication interface is connected using data connecting line with vehicle load, and the side of communication interface uses another data connecting line and vehicle
HS CAN bus is connected, and the lower section of the analog signal conditioner module one is equipped with isolated fault diagnostic module, analog signal tune
The side for managing module one is equipped with user configuration table equipped with diagnosis and prediction module, diagnosis and the lower section of prediction module, diagnoses and pre-
The side for surveying module is equipped with power distribution module, and the lower section of power distribution module is equipped with onboard diagnostics module, onboard diagnostics module
Lower section be equipped with safety function module；The signal input part of the analog signal conditioner module one is connected with voltage sensor, mould
The signal output end of quasi- one lower section of signal conditioning module is connected with the signal input part of isolated fault diagnostic module, analog signal tune
The signal output end for managing one side of module is defeated with signal input part, the signal of power distribution module of diagnosis and prediction module respectively
Enter end, the signal input part of user configuration table, the signal input part of onboard diagnostics module, safety function module signal input part
Be connected, the signal output end of isolated fault diagnostic module, the signal output end of diagnosis and prediction module, user configuration table signal
Output end, the signal output end of power distribution module, the signal output end of onboard diagnostics module and safety function module letter
Number output end is connected with communication interface.
The power distribution module is by high voltage power conductors, fuse, CAN photoisolator, filter circuit, analog signal
Conditioning module two, onboard diagnostic system built-in testing module, communication interface, module handler, the firewire of high voltage power conductors with
One end of fuse is connected, the other end of the fuse port phase with the end a of Voltage measure, current measurer side respectively
Even, the Centronics port of current measurer is connected with the side of analog signal conditioner module two, the port of the current measurer other side
It is connected with road/disconnect switch module one end is changed, changes road/disconnect switch module other end by the way of high-voltage interlocking and vehicle
Load be connected, low-tension supply is connected in vehicle load, the zero curve of high voltage power conductors is divided into 3 tunnels, all the way with vehicle load
It is connected, is connected all the way with the port b of Voltage measure, is connected all the way with the side of analog signal conditioner module two, voltage measurement
The port c of device is connected with the side of analog signal conditioner module two, the other side of analog signal conditioner module two and resume module
Device is connected, and the top of module handler is equipped with communication interface；The signal of the onboard diagnostic system built-in testing module transmits end
Mouth is connected with the receiver port one of module handler, changes road/disconnect switch module receiver port and vehicle load
It is connected, changes road/disconnect switch module signal output port and be connected with the receiver port two of module handler, the CAN
The receiver port of photoisolator is also connected with vehicle load, at the signal output port and module of CAN photoisolator
The receiver port three for managing device is connected.
The structure of the analog signal conditioner module one is identical as the structure of analog signal conditioner module two, by signal
Source, noise source, absorber, motor, sef-adapting filter and output end, signal source pass the signal along to absorber one, absorber
One is connected to the motor, and motor is connected with one end of sef-adapting filter, signal output device respectively, and noise source is divided into 2 tunnels and passes respectively
It is sent to absorber one and absorber two, absorber two is connected with the other end of sef-adapting filter, the sliding of sef-adapting filter
End is then connected with signal output device.
The diagnosis and prediction module are calculated in accordance with the following steps:
Step 1: leakage current test is carried out to central controller；
Step 2: overcurrent detection is carried out to central controller；
Step 3: over-voltage detection is carried out to central controller；
Step 4: Input Monitor Connector is carried out to vehicle load；
Step 5: output monitoring is carried out to vehicle load；
Step 6: sending user configuration table for the signal results integration of above 5 step, carry out the customized diagnosis of user, judgement
Diagnostic result.
There is diagnosis algorithm, its step are as follows in the power distribution module:
Step 1: over-current detection is carried out to power distribution module 1-6-5；
Step 2: over-voltage detection is carried out to power distribution module 1-6-5；
Step 3: current sensor detection is carried out to power distribution module 1-6-5；
Step 4: arc fault detection is carried out to power distribution module 1-6-5.
The arc fault detection modular structure are as follows: the anode of power supply Hv be divided into 2 tunnels respectively with one end of resistance Rp, resistance
One end of R1 is connected, and the other end of resistance R1 is connected with one end of switch SW1, and the other end of switch SW1 is divided into 2 tunnels, respectively with
One end of resistance R2, one end of resistance R3 are connected, and the other end of resistance R3 is divided into 2 tunnels, are connected all the way with the anode of 5v power supply, and one
Road is connected with one end of resistance R4, and the cathode of 5v power supply ground connection, the other end of resistance R4 is divided into 2 tunnels, respectively with the one of resistance R5
End, one end of switch SW2 are connected, and the other end of resistance R5 is divided into 4 tunnels, respectively with the other end of resistance R2, resistance Rp it is another
End, one end of resistance Rn, ground are connected, and the other end of switch SW2 is connected with one end of resistance R6, the other end point of resistance R6
For 2 tunnels, it is connected respectively with the cathode of the other end of resistance Rn, power supply Hv.
The specific detection method is as follows for the arc fault detection of the step 5:
Step 1: being respectively closed circuit switch SW1 and SW2, measurement obtains corresponding voltage V1 and V2；
Step 2: use formula:, the numerical value of Rn is calculated；
Step 3: use formula:, the numerical value of Rp is calculated；
Step 4: resulting Rn, Rp will be calculated compared with standard figures, if error greatly if judge to break down, if accidentally
Difference is minimum, judges not break down.
The module handler controls signal by arc fault detection module, load diagnosis and prediction module, output order
Module, electric energy metering module, self diagnosis module composition, the voltage signal inputs of the arc fault detection module, output refer to
Enable the voltage signal inputs of control signaling module, voltage signal inputs, the electrical energy measurement mould of load diagnosis and prediction module
Voltage signal of the voltage signal inputs with analog signal conditioner module two of the voltage signal inputs of block, self diagnosis module
Output end is connected, and voltage signal output end, the voltage signal of output order control signaling module of arc fault detection module are defeated
Outlet, load diagnosis and the voltage signal output end of prediction module, the voltage signal output end of electric energy metering module, self diagnosis mould
The voltage signal output end of block is connected with communication interface, the current signal input of the arc fault detection module, output
The current signal input of instruction control signaling module, load diagnoses and current signal input, the electrical energy measurement of prediction module
Current signal input, the current signal input of self diagnosis module of module are believed with the electric current of analog signal conditioner module two
Number output end is connected, the current signal of the current signal output end of arc fault detection module, output order control signaling module
Output end, load diagnosis and the current signal output end of prediction module, the current signal output end of electric energy metering module, self diagnosis
The current signal output end of module is connected with communication interface.
Compared with the prior art, the present invention has the following advantages:
A. the physical insulation and electrical isolation between hi-lo circuit may be implemented in power distribution module and its interface；
B. each power distribution module is equipped with a central controller, such as pre- to handle complicated operation and diagnostic program
Charging, electric discharge, voltage and current measurement etc..Without advantageously reducing the complexity of module interface, together by central controller module
When can handle the diagnostic program relatively high to rapidity requirement for example over-voltage and over-current detect；
C. the function that central controller module may be implemented has:
I. by the CAN communication between central controller module and other modules, to single or multiple power distribution moulds
Block is initialized, is detected, controlled or is closed；
Ii. realize it is system-level detect and control, energy management is carried out between high voltage power supply and vehicle load；
Iii. key function is realized: such as the ground fault of high-low pressure bus, vehicle voltage detection, temperature detection, electric current electricity
Survey etc.；
Iv. as the communication channel between high-pressure system and entire car controller, only relevant information can just be sent to vehicle
Controller；
V. the task manager as entire car controller and power distribution intermodule reduces the burden of vehicle communication bus,
Single face is provided for module communication, in this way, electric vehicle system integrated cost and time cost can be substantially reduced；
D. the interface that power distribution module height simplifies allows various modules to be directly connected with entire car controller, without spy
Fixed central controller module, it reduce costs, while allowing for the flexible choice of client.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the structural schematic diagram of central controller module in the present invention.
Fig. 3 is the structural schematic diagram of power distribution module in the present invention.
Fig. 4 is the structural schematic diagram of analog signal conditioner module in the present invention.
Fig. 5 is the algorithm flow chart of diagnosis and prediction module in central controller module in the present invention.
Fig. 6 is the algorithm flow chart of the module handler of power distribution module in the present invention.
Fig. 7 is the detection circuit in the present invention in arc fault detection module.
Specific embodiment
The present invention is described further in conjunction with attached drawing.
Referring to Fig. 1 ~ Fig. 7, the present invention devises the multi-load high-voltage direct module system of pure electric vehicle, including center control
Device processed and vehicle load, it is characterised in that: central controller 1 is in parallel with vehicle load 2；The central controller 1 is by high-voltage electricity
Source input bus 1-1, vehicle HS CAN bus 1-2, voltage sensor 1-3, vehicle-mounted low-tension supply 1-4, low pressure voltage-stablizer 1-5,
Control CPU module 1-6 and communication interface 1-7 composition, wherein control CPU module 1-6 by one 1-6-1 of analog signal conditioner module,
Isolated fault diagnostic module 1-6-2, diagnosis and prediction module 1-6-3, user configuration table 1-6-4, power distribution module 1-6-5,
Onboard diagnostics module 1-6-6 and safety function module 1-6-7 composition, the firewire of the high voltage power supply input bus 1-1 respectively with
The end A of voltage sensor 1-3, the side of one 1-6-1 of analog signal conditioner module are connected, and the zero of high voltage power supply input bus 1-1
Line is divided into two-way and is connected respectively with the side at the end B of voltage sensor 1-3, one 1-6-1 of analog signal conditioner module, voltage induced
The C-terminal of device 1-3 is also connected with the side of one 1-6-1 of analog signal conditioner module, vehicle-mounted low-tension supply 1-4 and low pressure voltage-stablizer 1-
5 side is connected, and the other side of low pressure voltage-stablizer 1-5 is connected with low-tension supply 1-8, control CPU module 1-6 respectively, controls CPU
Module 1-6's is fixedly arranged above communication interface 1-7, and the top of communication interface 1-7 uses data connecting line and 2 phase of vehicle load
Even, the side of communication interface 1-7 is connected using another data connecting line with vehicle HS CAN bus 1-2, the analog signal tune
The lower section for managing one 1-6-1 of module is equipped with isolated fault diagnostic module 1-6-2, sets beside one 1-6-1 of analog signal conditioner module
There are diagnosis and prediction module 1-6-3, diagnosis and the lower section of prediction module 1-6-3 are equipped with user configuration table 1-6-4, diagnose and predict
The side of module 1-6-3 is equipped with power distribution module 1-6-5, and the lower section of power distribution module 1-6-5 is equipped with onboard diagnostics module
The lower section of 1-6-6, onboard diagnostics module 1-6-6 are equipped with safety function module 1-6-7；One 1-6- of analog signal conditioner module
1 signal input part is connected with voltage sensor 1-3, the signal output end below one 1-6-1 of analog signal conditioner module with every
Signal input part from fault diagnosis module 1-6-2 is connected, the signal output end point of one side 1-6-1 of analog signal conditioner module
Not with diagnosis and the signal input part of prediction module 1-6-3, the signal input part of power distribution module 1-6-5, user configuration table
The signal input part of 1-6-4, the signal input part of onboard diagnostics module 1-6-6, safety function module 1-6-7 signal input part
Be connected, the signal output end of isolated fault diagnostic module 1-6-2, diagnosis and prediction module 1-6-3 signal output end, Yong Hupei
It is defeated to set the signal output end of table 1-6-4, the signal output end of power distribution module 1-6-5, the signal of onboard diagnostics module 1-6-6
The signal output end of outlet and safety function module 1-6-7 are connected with communication interface 1-7.
Power distribution module 1-6-5 is by high voltage power conductors 1-6-5-1, fuse 1-6-5-2, CAN photoelectricity in the present invention
Isolator 1-6-5-3, filter circuit 1-6-5-4, two 1-6-5-5 of analog signal conditioner module, onboard diagnostic system built-in testing
Module 1-6-5-6, communication interface 1-6-5-7, module handler 1-6-5-8, the firewire of high voltage power conductors 1-6-5-1 and insurance
One end of silk 1-6-5-3 is connected, and the other end of fuse 1-6-5-2 is surveyed with the end a of Voltage measure 1-6-5-9, electric current respectively
The port of the side measuring device 1-6-5-10 is connected, the Centronics port and two 1- of analog signal conditioner module of current measurer 1-6-5-10
The side of 6-5-5 is connected, and the port of the other side current measurer 1-6-5-10 and changes road/disconnect switch module 1-6-5-11 one
End is connected, and changes road/disconnect switch module 1-6-5-11 other end and is connected by the way of high-voltage interlocking with vehicle load 2, vehicle
Load 2 on be connected with low-tension supply 1-8, the zero curve of high voltage power conductors 1-6-5-1 is divided into 3 tunnels, all the way with 2 phase of vehicle load
Even, be connected all the way with the port b of Voltage measure 1-6-5-10, all the way with the side of two 1-6-5-5 of analog signal conditioner module
It is connected, the port c of Voltage measure 1-6-5-10 is connected with the side of two 1-6-5-5 of analog signal conditioner module, analog signal
The other side of two 1-6-5-5 of conditioning module is connected with module handler 1-6-5-8, two 1-6-5-5's of analog signal conditioner module
Top is connected with filter circuit module 1-6-5-4, and the top of module handler 1-6-5-8 is equipped with communication interface 1-6-5-7；It is described
The signal receiving end of signal the transmitting port and module handler 1-6-5-8 of onboard diagnostic system built-in testing module 1-6-5-6
Mouth one is connected, and changes road/disconnect switch module 1-6-5-11 receiver port and is connected with vehicle load 2, changes road/disconnect switch
The signal output port of module 1-6-5-11 is connected with the receiver port two of module handler 1-6-5-8, the CAN photoelectricity
The receiver port of isolator 1-6-5-3 is also connected with vehicle load 2, the signal output end of CAN photoisolator 1-6-5-3
Mouth is connected with the receiver port three of module handler 1-6-5-8.
The knot of the structure of one 1-6-1 of analog signal conditioner module and two 1-6-5-5 of analog signal conditioner module in the present invention
Structure is identical, and by signal source 3, noise source 4, absorber, motor 7, sef-adapting filter 8 and signal output device 9, signal source 3 will
Signal is transmitted to absorber 1, and absorber 1 is connected with motor 7, motor 7 respectively with one end of sef-adapting filter 8, signal
Follower 9 is connected, and noise source 4, which is divided, is respectively transmitted to absorber 1 and absorber 26, absorber 26 and adaptive filter for 2 tunnels
The other end of wave device 8 is connected, and the sliding end of sef-adapting filter 8 is then connected with signal output device 9.
Diagnosis and prediction module calculate in accordance with the following steps in the present invention:
Step 1: leakage current test is carried out to central controller 1；
Step 2: overcurrent detection is carried out to central controller 1；
Step 3: over-voltage detection is carried out to central controller 1；
Step 4: Input Monitor Connector is carried out to vehicle load 2；
Step 5: output monitoring is carried out to vehicle load 2；
Step 6: sending user configuration table 1-6-4 for the signal results integration of above 5 step, carry out user and make volunteer medical consultation by oneself
It is disconnected, judge diagnostic result.
There is diagnosis algorithm, its step are as follows in the present invention in power distribution module 1-6-5:
Step 1: over-current detection is carried out to power distribution module 1-6-5；
Step 2: over-voltage detection is carried out to power distribution module 1-6-5；
Step 3: contactor detection is carried out to power distribution module 1-6-5；
Step 4: current sensor detection is carried out to power distribution module 1-6-5；
Step 5: arc fault detection is carried out to power distribution module 1-6-5.
Arc fault detection module 1-6-5-8a structure in the present invention are as follows: the anode of power supply Hv be divided into 2 tunnels respectively with resistance
One end of Rp, one end of resistance R1 are connected, and the other end of resistance R1 is connected with one end of switch SW1, the other end point of switch SW1
For 2 tunnels, be connected respectively with one end of one end of resistance R2, resistance R3, the other end of resistance R3 is divided into 2 tunnels, all the way with 5v power supply
Anode be connected, be connected all the way with one end of resistance R4, the cathode of 5v power supply ground connection, the other end of resistance R4 is divided into 2 tunnels, distinguishes
Be connected with one end of one end of resistance R5, switch SW2, the other end of resistance R5 is divided into 4 tunnels, respectively with the other end of resistance R2,
The other end of resistance Rp, one end of resistance Rn, ground are connected, and the other end of switch SW2 is connected with one end of resistance R6, resistance
The other end of R6 is divided into 2 tunnels, is connected respectively with the cathode of the other end of resistance Rn, power supply Hv.
The specific detection method is as follows for the arc fault detection of step 5 in the present invention:
Step 1: being respectively closed circuit switch SW1 and SW2, measurement obtains corresponding voltage V1 and V2；
Step 2: use formula:, the numerical value of Rn is calculated；
Step 3: use formula:, the numerical value of Rp is calculated；
Step 4: resulting Rn, Rp will be calculated compared with standard figures, if error greatly if judge to break down, if accidentally
Difference is minimum, judges not break down.
Module handler 1-6-5-8 diagnoses and predicts mould by arc fault detection module 1-6-5-8a, load in the present invention
Block 1-6-5-8c, output order control signaling module 1-6-5-8b, electric energy metering module 1-6-5-8d, self diagnosis module 1-6-5-
8e composition, voltage signal inputs, the output order of the arc fault detection module 1-6-5-8a control signaling module 1-6-
The voltage signal inputs of 5-8b, load diagnose and voltage signal inputs, the electric energy metering module of prediction module 1-6-5-8c
The voltage signal inputs of 1-6-5-8d, self diagnosis module 1-6-5-8e voltage signal inputs with analog signal conditioner mould
The voltage signal output end of two 1-6-5-5 of block is connected, the voltage signal output end of arc fault detection module 1-6-5-8a, output
The voltage signal output end of instruction control signaling module 1-6-5-8b, load diagnoses and the voltage signal of prediction module 1-6-5-8c
The voltage signal output of output end, the voltage signal output end of electric energy metering module 1-6-5-8d, self diagnosis module 1-6-5-8e
End is connected with communication interface 1-6-5-7, and the current signal input of the arc fault detection module 1-6-5-8a, output refer to
Enable the current signal of the current signal input for controlling signaling module 1-6-5-8b, load diagnosis and prediction module 1-6-5-8c defeated
Enter end, the current signal input of electric energy metering module 1-6-5-8d, the current signal input of self diagnosis module 1-6-5-8e
It is connected with the current signal output end of two 1-6-5-5 of analog signal conditioner module, arc fault detection module 1-6-5-8a's
Current signal output end, the current signal output end of output order control signaling module 1-6-5-8b, load diagnosis and prediction mould
The current signal output end of block 1-6-5-8c, the current signal output end of electric energy metering module 1-6-5-8d, self diagnosis module 1-
The current signal output end of 6-5-8e is connected with communication interface 1-6-5-7.
Referring to fig. 4, one noise source comprising noise is utilized in analog signal conditioner module as reference input, makes an uproar
Sound source 4 is after the filtering of sef-adapting filter 8, then subtracts each other to obtain output signal with signal source, finally by output signal by signal
Follower 9 passes, such structure, so that the connection part of high voltage distribution box is not necessarily to shield high-tension cable, and saves and sets
The time of meter exploitation EMC system and cost.
Referring to Fig. 7, since circuit common code impedance is heavily dependent on the parameter of circuit components, join in device
Number changes, and when especially having element to access circuit, great changes will take place for the common code impedance meeting of circuit, and changes circuit
Time constant.This just needs arc-detection algorithm to make corresponding change, in addition to the analysis of common mode bus current or voltage
Show the ripple on bus there are different frequency and amplitude.And existing arc fault diagnostic circuit does not have and handles these
Ripple interference ability, thus the present invention devise completely new arc fault detection circuit, and used dsp chip for point
It analyses these ripples and determines the source of trouble.
The basic function that the present invention realizes is as follows:
1. high pressure tandem: the input side of multichannel High voltage output realizes bus mode tandem, utmostly reduce impedance and
Inductance reduces line impedance loss；
2. short-circuit protection: playing a protective role when high-voltage electricity device and high-voltage wiring harness short circuit or overcurrent.It is every to export all the way
The safeguard protection of line short and equipment short circuit is all individually realized with fuse；
3. pre-charging functions: realizing to vehicle High-Voltage Electrical Appliances pre-charging functions；
4. power battery charging is protected: driving can be disconnected in power battery charging automatically by increasing charge protection measure
System and other high voltage electric electrical equipments play protection vehicle and driver safety function；
5. multiple-channel output is isolated: being electrically isolated from each other between multiple-channel output, voltage isolation Level reaches 10KV；
6. DC bus high voltage: DC bus-bar voltage can realize highest 900VDC；
7. low tension loop is isolated with high tension loop: isolation voltage is 5KV, high tension loop input and output between high-low pressure
Isolation voltage is 10KV.
Above-mentioned basic function may be implemented incessantly and following Premium Features may be implemented by the present invention:
1. fault pretest surveys warning function, fault detection is carried out before connecting to major loop, specifically includes that power input pole
Property mistake, loaded line polarity connection；
2. mistake, load short circuits: detection circuit detects such failure, terminates subsequent operation and alarms, to such
Failure can be such that contactor, fuse damages if connecting contactor by force；
3. multistage precharge: before major loop contactor is connected, carrying out multistage precharge to equipment by redundant mesh, to the greatest extent
It is likely to reduced contactor both ends pressure difference, connects contactor in the case where non-impact current.Switch contact ablation is avoided to fail,
Substantially extend major loop contactor service life；
4. real-time high pressure detection: real-time detection high-pressure situations during operation, when occurring, load short circuits or input open circuit etc. are former
When barrier leads to high pressure decompression, corresponding circuit can be cut off after of short duration delay a period of time, to guarantee corresponding circuit equipment safety；
More than 5. kinds of instruction function: including fuse failure instruction function, circuit electrification alarm indication function etc.；
6. functions such as Full Vehicle System insulating properties detection and alarms；
More than 7. reserved port, to extend external connecting function of the invention；
8. high-voltage interlocking function；
9. remote monitoring function: remote monitoring module can be configured, all operating statuses and fault message can lead to
It crosses remote monitoring module and is sent to HVDC central monitoring position, realize intelligent things.
In a particular embodiment,
Key or entire car controller VCU of the control signal from bridge of electric vehicle；When preparation switch starting,
24V electrical system work, the pre-charge contactor closure of electric machine controller, power-assisted steering control and brake monitor, charges in advance
Cheng Hou, the protection contactor closure in these circuits, makes electric machine controller, power-assisted steering control connect power electric with brake monitor
Source.
And then the preliminary filling electrical circuit of motor driver is connected, and after the completion of preliminary filling, the D.C. contactor of major loop is closed, and is connect
Logical high voltage dc bus.
Insulation tester is started to work simultaneously, insulation resistance of the detection power accumulator positive and negative busbar to car body.If detection
Power bus insulation resistance is lower than the reference value (100 Europe/volt) of national standard, and the protection contactor in above-mentioned circuit is disconnected；Report
Alert signal is sent to full-vehicle control unit VCU.
After insulation resistance is met the requirements, ignition switch connects corresponding D.C. contactor at the position ON, so that DC/
The work of DC converter, replaces 24V battery to power to low-voltage electric system, while charging to 24V battery.
Air-conditioning, warm air equipment, defrosting equipment on car can be controlled by different relays, by pressing on instrument board
Whether key control connects electrical source of power start-up operation.
Simultaneously in specific implement, what main engine plants can specify each high-voltage electricity attachment obtains feelings in different battery pack SOC values
The priority orders of high-voltage electricity attachment under condition；And it is written in central controller；The starting of each high-voltage electricity attachment and the sequence shut down
It will be by the priority orders under current SOC state；To preferentially guarantee the normal work of important electric attachment.
Claims (7)
1. the multi-load high-voltage direct module system of pure electric vehicle, including central controller and vehicle load, it is characterised in that:
Central controller (1) is in parallel with vehicle load (2)；The central controller (1) is by high voltage power supply input bus (1-1), vehicle
HS CAN bus (1-2), voltage sensor (1-3), vehicle-mounted low-tension supply (1-4), low pressure voltage-stablizer (1-5), control CPU module
(1-6) and communication interface (1-7) composition, wherein control CPU module (1-6) is by analog signal conditioner module one (1-6-1), isolation
Fault diagnosis module (1-6-2), diagnosis and prediction module (1-6-3), user configuration table (1-6-4), power distribution module (1-6-
5), onboard diagnostics module (1-6-6) and safety function module (1-6-7) composition, the fire of the high voltage power supply input bus (1-1)
Line is connected with the side at the end A of voltage sensor (1-3), analog signal conditioner module one (1-6-1) respectively, high voltage power supply input
The zero curve of bus (1-1) be divided into two-way respectively with the end B of voltage sensor (1-3), analog signal conditioner module one (1-6-1)
Side is connected, and the C-terminal of voltage sensor (1-3) is also connected with the side of analog signal conditioner module one (1-6-1), vehicle-mounted low pressure
Power supply (1-4) is connected with the side of low pressure voltage-stablizer (1-5), the other side of low pressure voltage-stablizer (1-5) respectively with low-tension supply (1-
8), control CPU module (1-6) is connected, and control CPU module (1-6) is fixedly arranged above communication interface (1-7), communication interface (1-
7) top is connected using data connecting line with vehicle load (2), and the side of communication interface (1-7) uses another data connecting line
It is connected with vehicle HS CAN bus (1-2), the lower section of the analog signal conditioner module one (1-6-1) is diagnosed equipped with isolated fault
The side of module (1-6-2), analog signal conditioner module one (1-6-1) is equipped with diagnosis and prediction module (1-6-3), diagnoses and pre-
The lower section for surveying module (1-6-3) is equipped with user configuration table (1-6-4), and the side of diagnosis and prediction module (1-6-3) are equipped with power supply
The lower section of distribution module (1-6-5), power distribution module (1-6-5) is equipped with onboard diagnostics module (1-6-6), onboard diagnostics module
The lower section of (1-6-6) is equipped with safety function module (1-6-7)；The signal of the analog signal conditioner module one (1-6-1) inputs
End is connected with voltage sensor (1-3), and the signal output end below analog signal conditioner module one (1-6-1) is examined with isolated fault
The signal input part of disconnected module (1-6-2) is connected, the signal output end of the side analog signal conditioner module one (1-6-1) respectively with
Diagnosis and the signal input part of prediction module (1-6-3), the signal input part of power distribution module (1-6-5), user configuration table
The signal input part of (1-6-4), the signal input part of onboard diagnostics module (1-6-6), safety function module (1-6-7) signal
Input terminal is connected, and the signal of the signal output end of isolated fault diagnostic module (1-6-2), diagnosis and prediction module (1-6-3) is defeated
Outlet, the signal output end of user configuration table (1-6-4), the signal output end of power distribution module (1-6-5), onboard diagnostics mould
The signal output end of the signal output end of block (1-6-6) and safety function module (1-6-7) with communication interface (1-7) phase
Even.
2. the multi-load high-voltage direct module system of pure electric vehicle according to claim 1, it is characterised in that: the electricity
Source distribution module (1-6-5) is by high voltage power conductors (1-6-5-1), fuse (1-6-5-2), CAN photoisolator (1-6-5-
3), filter circuit (1-6-5-4), analog signal conditioner module two (1-6-5-5), onboard diagnostic system built-in testing module (1-
6-5-6), communication interface (1-6-5-7), module handler (1-6-5-8), the firewire of high voltage power conductors (1-6-5-1) and guarantor
One end of dangerous silk (1-6-5-3) is connected, the other end of fuse (1-6-5-2) a with Voltage measure (1-6-5-9) respectively
End, the port of the side current measurer (1-6-5-10) are connected, and the Centronics port of current measurer (1-6-5-10) and simulation are believed
The side of number conditioning module two (1-6-5-5) is connected, and the port of the other side current measurer (1-6-5-10) is opened with road/open circuit is changed
The one end for closing module (1-6-5-11) is connected, and changes road/disconnect switch module (1-6-5-11) other end using high-voltage interlocking
Mode is connected with vehicle load (2), is connected in vehicle load (2) low-tension supply (1-8), high voltage power conductors (1-6-5-1)
Zero curve be divided into 3 tunnels, be connected all the way with vehicle load (2), be connected all the way with the port b of Voltage measure (1-6-5-10), one
Road is connected with the side of analog signal conditioner module two (1-6-5-5), and the port c of Voltage measure (1-6-5-10) and simulation are believed
The side of number conditioning module two (1-6-5-5) is connected, the other side of analog signal conditioner module two (1-6-5-5) and resume module
Device (1-6-5-8) is connected, and filter circuit module (1-6-5-4) is connected with above analog signal conditioner module two (1-6-5-5),
The top of module handler (1-6-5-8) is equipped with communication interface (1-6-5-7)；The onboard diagnostic system built-in testing module
The signal transmitting port of (1-6-5-6) is connected with the receiver port one of module handler (1-6-5-8), changes road/open circuit and opens
The receiver port for closing module (1-6-5-11) is connected with vehicle load (2), changes road/disconnect switch module (1-6-5-11)
Signal output port is connected with the receiver port two of module handler (1-6-5-8), the CAN photoisolator (1-6-
Receiver port 5-3) is also connected with vehicle load (2), the signal output port of CAN photoisolator (1-6-5-3) with
The receiver port three of module handler (1-6-5-8) is connected.
3. the multi-load high-voltage direct module system of pure electric vehicle according to claim 1 or 2, it is characterised in that: institute
The structure for stating analog signal conditioner module one (1-6-1) is identical as the structure of analog signal conditioner module two (1-6-5-5), by
Signal source (3), noise source (4), absorber, motor (7), sef-adapting filter (8) and signal output device (9), signal source (3) will
Signal is transmitted to absorber one (5), and absorber one (5) is connected with motor (7), motor (7) respectively with sef-adapting filter (8)
One end, signal output device (9) are connected, and noise source (4) is divided into 2 tunnels and is respectively transmitted to absorber one (5) and absorber two (6), inhale
Receive device two (6) be connected with the other end of sef-adapting filter (8), the sliding end of sef-adapting filter (8) then with signal output device
(9) it is connected.
4. the multi-load high-voltage direct module system of pure electric vehicle according to claim 1, it is characterised in that: described to examine
Disconnected and prediction module is calculated in accordance with the following steps:
Step 1: leakage current test is carried out to central controller (1)；
Step 2: overcurrent detection is carried out to central controller (1)；
Step 3: over-voltage detection is carried out to central controller (1)；
Step 4: Input Monitor Connector is carried out to vehicle load (2)；
Step 5: output monitoring is carried out to vehicle load (2)；
Step 6: it sends the signal results integration of above 5 step to user configuration table (1-6-4), carries out the customized diagnosis of user,
Judge diagnostic result.
5. the multi-load high-voltage direct module system of pure electric vehicle according to claim 1, it is characterised in that: the electricity
There is diagnosis algorithm, its step are as follows in source distribution module (1-6-5):
Step 1: over-current detection is carried out to power distribution module (1-6-5)；
Step 2: over-voltage detection is carried out to power distribution module (1-6-5)；
Step 3: contactor detection is carried out to power distribution module (1-6-5)；
Step 4: current sensor detection is carried out to power distribution module (1-6-5)；
Step 5: arc fault detection is carried out to power distribution module (1-6-5).
6. the multi-load high-voltage direct module system of pure electric vehicle according to claim 5, it is characterised in that: electric arc event
Hinder detection module (1-6-5-8a) structure are as follows: the anode of power supply Hv is divided into the one end of 2 tunnels respectively with one end of resistance Rp, resistance R1
It is connected, the other end of resistance R1 is connected with one end of switch SW1, and the other end of switch SW1 is divided into 2 tunnels, respectively with resistance R2's
One end, resistance R3 one end be connected, the other end of resistance R3 is divided into 2 tunnels, be connected all the way with the anode of 5v power supply, all the way with resistance
One end of R4 is connected, and the cathode ground connection of 5v power supply, the other end of resistance R4 is divided into 2 tunnels, respectively with one end of resistance R5, switch
One end of SW2 is connected, and the other end of resistance R5 is divided into 4 tunnels, respectively with the other end of resistance R2, the other end of resistance Rp, resistance
One end, the ground of Rn is connected, and the other end of switch SW2 is connected with one end of resistance R6, and the other end of resistance R6 is divided into 2 tunnels,
It is connected respectively with the cathode of the other end of resistance Rn, power supply Hv.
7. the multi-load high-voltage direct module system of pure electric vehicle according to claim 2, it is characterised in that: the mould
Block processor (1-6-5-8) is by arc fault detection module (1-6-5-8a), load diagnosis and prediction module (1-6-5-8c), defeated
Instruction control signaling module (1-6-5-8b), electric energy metering module (1-6-5-8d), self diagnosis module (1-6-5-8e) composition out,
The voltage signal inputs of the arc fault detection module (1-6-5-8a), output order control signaling module (1-6-5-8b)
Voltage signal inputs, load diagnosis and prediction module (1-6-5-8c) voltage signal inputs, electric energy metering module (1-
The voltage signal inputs of voltage signal inputs, self diagnosis module (1-6-5-8e) 6-5-8d) are and analog signal conditioner
The voltage signal output end of module two (1-6-5-5) is connected, the voltage signal output of arc fault detection module (1-6-5-8a)
End, the voltage signal output end of output order control signaling module (1-6-5-8b), load diagnosis and prediction module (1-6-5-
Voltage signal output end, the self diagnosis module (1-6-5- of voltage signal output end, electric energy metering module (1-6-5-8d) 8c)
Voltage signal output end 8e) is connected with communication interface (1-6-5-7), the arc fault detection module (1-6-5-8a)
Current signal input, the current signal input of output order control signaling module (1-6-5-8b), load diagnosis and prediction
The current signal input of module (1-6-5-8c), the current signal input of electric energy metering module (1-6-5-8d), self diagnosis
Current signal output end of the current signal input of module (1-6-5-8e) with analog signal conditioner module two (1-6-5-5)
It is connected, current signal output end, the output order of arc fault detection module (1-6-5-8a) control signaling module (1-6-5-
Current signal output end, the electric energy metering module of current signal output end, load diagnosis and prediction module (1-6-5-8c) 8b)
The current signal output end of (1-6-5-8d), self diagnosis module (1-6-5-8e) current signal output end and communication interface
(1-6-5-7) is connected.
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| CN107861444B (en) * | 2017-12-22 | 2023-08-01 | 江西江铃汽车集团改装车股份有限公司 | Integrated electrical system |
| CN108001230B (en) * | 2017-12-22 | 2019-09-20 | 珠海广通汽车有限公司 | Circuit system and electric vehicle |
| US10948530B2 (en) * | 2018-10-29 | 2021-03-16 | Lear Corporation | Apparatus and method for asymmetrical isolation monitor failure detection |
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| JP2013255297A (en) * | 2012-06-05 | 2013-12-19 | Panasonic Corp | Vehicular inverter device |
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