CN209675961U - A kind of pre-charging device for integrating PTC controller - Google Patents
A kind of pre-charging device for integrating PTC controller Download PDFInfo
- Publication number
- CN209675961U CN209675961U CN201822208299.6U CN201822208299U CN209675961U CN 209675961 U CN209675961 U CN 209675961U CN 201822208299 U CN201822208299 U CN 201822208299U CN 209675961 U CN209675961 U CN 209675961U
- Authority
- CN
- China
- Prior art keywords
- unit
- voltage
- ptc
- output
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model proposes a kind of pre-charging devices for integrating PTC controller, including input high-voltage connector, high-voltage fuse, cathodal current detection unit, positive current detecting unit, EMC filter unit, input voltage measurement unit, CAN communication unit, master power switch modular unit, high-voltage filtering capacitor, High voltage output connector, output voltage detection unit, electrion unit, control unit, PTC power output unit, internal temperature sensor unit and external temperature sensor feedback unit.The pre-charging device of integration PTC controller; improve the controllability of precharging circuit; preliminary filling is controlled using high-speed power semiconductor devices and main circuit is powered; reduce volume; it realizes simultaneously and rapidly switches off defencive function under load overcurrent and short-circuit conditions; the device incorporates PTC control function simultaneously, reduces the duplicate circuit of redundancy among application system, greatly reduces system cost.Solve the problems, such as that the wasting of resources, defencive function are insufficient and reliability is low.
Description
Technical field
The utility model relates to PTC controller fields, more particularly, to a kind of pre-charging device for integrating PTC controller.
Background technique
In high-tension battery power supply system, the electrical equipment of high pressure is connected in parallel on high voltage dc bus, in electrical equipment
Portion is usually additionally provided with bus capacitor.In high pressure power up, if not carrying out reliable preliminary filling electric treatment to it, wink is being powered on
Between bus high pressure will be applied directly to load bus capacitor on, biggish dash current will be generated in bus bar circuit.This electric current
High voltage connector will be caused to stick together, insure burn out, the consequences such as battery over-discharge.Currently, the heat management of electric car industry
In system, PTC electric heater is generallyd use as heating combined equipment, is just inevitably related between ptc heater and vehicle
The contents such as control circuit, power supply circuit.In order to control heating system, mainly it is equipped at present using high-pressure system in industry special
Preliminary filling device, and using the ptc heater from tape controller.
Existing pre-charge circuit is mainly by pre-charge-relay 8 in attached drawing 2 and 9 main relay 10 of preliminary filling resistance and pre-
11 compositions are held in charging.Existing PTC control circuit mainly by 1 in attached drawing 3, input high-voltage connector 2, high-voltage fuse 4, anode
Current detecting unit 5, filter unit 6, input voltage measurement unit 7, communication unit 15, control unit 16, power output unit
17, temperature sensor unit forms.There is following disadvantages for composition proposal in this way:
1, preliminary filling device and PTC device use two sets of control circuits, independent mutually as two kinds of products in high-pressure system,
Two sets of high-low pressure connectors, shell will be used, filter etc. causes the waste of resource and the increase of cost.
2, pre-charge system itself is without anti-reverse, over-voltage, the defencive functions such as load short circuits.
3, pre-charge system control mode is the control of simple relay, the damage in the application of long range, on control line
Consumption increases, and reliability will will be greatly reduced.And preliminary filling and main relay Loop Size are big, and the response time is slow, especially subsequent
Short circuit, overcurrent can not cut off main circuit power supply in time.
Utility model content
(1) the technical issues of solving
In view of the deficiencies of the prior art, the utility model proposes a kind of pre-charging devices for integrating PTC controller, to solve
The certainly wasting of resources, defencive function deficiency and the low problem of reliability.
(2) technical solution
In order to achieve the above object, the utility model is achieved by the following technical programs: a kind of to integrate PTC controller
Pre-charging device, including input high-voltage connector, high-voltage fuse, cathodal current detection unit, positive current detecting unit,
Filter unit, input voltage measurement unit, communication unit, low-voltage power supply unit, master power switch unit, internal temperature detection are single
Member, preliminary filling filter capacitor, High voltage output connector, output voltage detection unit, electrion unit, control unit, PTC power
Output unit and outside PTC temperature sensor unit；
The anode of input high-voltage connector is connected with the left end of high-voltage fuse, inputs the cathode of high-voltage connector and bears
The left end of electrode current detection unit is connected, and cathodal current detection unit is connected with the input cathode of filter unit, high-voltage fuse
Right end be directly connected with the left end of positive current detecting unit；
The right end of positive current detecting unit is connected with the input anode of filter unit, the output cathode difference of filter unit
Connection master power switch unit input terminal connect with the input positive terminal of input voltage measurement unit, control unit respectively with lead to
Letter unit, low-voltage power supply unit, internal temperature detection unit are connected with outside PTC temperature sensor unit.
Preferably, the cathode of the filter unit cathode with the cathode of preliminary filling filter capacitor, input voltage measurement unit respectively
Input terminal, the negative input of output voltage detection unit, the negative input of electrion unit and PTC power output unit
Negative input be connected, the output end of master power switch unit is connected with the anode of preliminary filling filter capacitor.
Preferably, the cathode output end of preliminary filling filter capacitor anode and High voltage output connector, output voltage detection unit
Electrode input end, the electrode input end of electrion unit is connected with the electrode input end of PTC power output unit.
Preferably, when powering on preliminary filling, control unit output pwm signal gives master power switch unit, passes through positive electrode current
Detection unit controls preliminary filling size of current；It is wanted when output voltage detection unit meets setting with input voltage measurement unit pressure difference
It asks, control unit exports fixed logic level signal and gives master power switch unit, keeps master power switch unit constantly on.
Preferably, according to external PTC temperature sensor unit feedback temperature and setting logic, control unit exports PWM letter
Number give PTC power output unit.
(3) beneficial effect
The utility model provides a kind of pre-charging device for integrating PTC controller, have it is following the utility model has the advantages that
(1), the pre-charging device of integration PTC controller can be with Real-time Feedback height using reliable can communication mode
The voltage and current state for pushing back road, improves the controllability of precharging circuit, controls preliminary filling using high-speed power semiconductor devices
It powers with main circuit, reduces volume, while realizing and rapidly switching off defencive function under load overcurrent and short-circuit conditions.The device is same
When incorporate PTC control function, reduce the duplicate circuit of redundancy among application system, greatly reduce system cost.Solution
The certainly wasting of resources, defencive function deficiency and the low problem of reliability.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is existing pre-fill system block diagram in industry；
Fig. 3 is existing PTC product systems block diagram in industry.
In attached drawing 1: 1, inputting high-voltage connector；2, high-voltage fuse；3, cathodal current detection unit；4, positive electrode current
Detection unit；5, filter unit；6, input voltage measurement unit；7, communication unit；8, low-voltage power supply unit；9, master power switch
Unit；10, internal temperature detection unit；11, preliminary filling filter capacitor；12, High voltage output patches；13, output voltage detection unit；
14, electrion unit；15, control unit；16, PTC power output unit；17, outside PTC temperature sensor unit.
In attached drawing 2: 8, pre-charge-relay；9, preliminary filling resistance；10, main relay；11, pre-charging capacitor.
In attached drawing 3: 1, inputting high-voltage connector；2, high-voltage fuse；4, positive current detecting unit；5, filter unit；
6, input voltage measurement unit；7, communication unit；15, control unit；16, PTC power output unit；17, external temperature senses
Device unit.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1-3 is please referred to, the utility model provides a kind of technical solution: a kind of pre-charging device for integrating PTC controller,
Including input high-voltage connector 1, high-voltage fuse 2, cathodal current detection unit 3, positive current detecting unit 4, filter unit
5, input voltage measurement unit 6, communication unit 7, low-voltage power supply unit 8, master power switch unit 9, internal temperature detection unit
10, preliminary filling filter capacitor 11, High voltage output connector 12, output voltage detection unit 13, electrion unit 14, control unit
15, PTC power output unit 16 and outside PTC temperature sensor unit 17；
The anode of input high-voltage connector 1 is connected with the left end of high-voltage fuse 2, inputs the cathode of high-voltage connector 1
It is connected with the left end of cathodal current detection unit 3, cathodal current detection unit 3 is connected with the input cathode of filter unit 5, high
The right end of pressure fuse 2 is directly connected with the left end of positive current detecting unit 4；
The right end of positive current detecting unit 4 is connected with the input anode of filter unit 5, the output cathode of filter unit 5
The input terminal for being separately connected master power switch unit 9 is connected with the input positive terminal of input voltage measurement unit 6, control unit 15
Connect respectively with communication unit 7, low-voltage power supply unit 8, internal temperature detection unit 10 and outside PTC temperature sensor unit 17
It connects.The cathode of filter unit 5 negative input, defeated with the cathode of preliminary filling filter capacitor 11, input voltage measurement unit 6 respectively
The negative input of voltage detection unit 13, the negative input of electrion unit 14 and PTC power output unit 16 out
Negative input is connected, and the output end of master power switch unit 9 is connected with the anode of preliminary filling filter capacitor 11.Preliminary filling filtered electrical
Hold 11 anodes and the cathode output end of High voltage output connector 12, the electrode input end of output voltage detection unit 13, height presses
The electrode input end of electric unit 14 is connected with the electrode input end of PTC power output unit 16.
When specifically used, preliminary filling and height is can be realized in control by Hard link and other control units to electrifying timing sequence
The purpose for pressing protection, by relevant protocol instructions, i.e., controllable PTC realizes heating function.Specific function is realized:
(1) precharge function is realized: pre-charging device receives precharge by can bus communication unit 7 and powers on instruction, examines
After survey input high tension voltage is normal, 15 output pwm signal of control unit passes through positive current detecting to master power switch unit 9
Unit 4 controls preliminary filling size of current；It is wanted when output voltage detection unit 13 meets setting with 6 pressure difference of input voltage measurement unit
It asks, control unit 15 exports fixed logic level signal to master power switch unit 9, and keep master power switch unit 9 constantly on,
The precharge function of high tension loop can be completed, and realize that high pressure powers on；Pre-charging device is received by can bus communication unit 7
To after the lower electricity instruction of precharge, 15 output pwm signal of control unit gradually reduces the mother in circuit to master power switch unit 9
Line current, the electric current to be checked that measures on bus are stablized in given threshold, execute discharging action by control discharge cell 14, until
When output Current Voltage reaches given threshold in system, terminate electric discharge, completes Electricity Functional under high pressure.
(2) protection and feedback function are realized:
A) pre-charging device realizes the detection to input terminal voltage by input voltage measurement unit 6, realizes high tension loop
Over-voltage and under-voltage protection function, by judging that the anti-reverse protection of input terminal can be realized in polarity of voltage.
B) power on or lower electric process in, 15 output pwm signal of control unit to after master power switch unit 9 by detection and
Compare the voltage of input and output side, can judge that the whether empty electricity of input voltage, then comprehensive internal temperature detect 10 feedback letters
Number, that is, it can determine whether master power switch unit 9 works normally.
C) pre-charging device passes through positive current detecting unit 4, and cathodal current detection unit 3 is realized positive and negative to bus
The real-time current of pole detects, and realizes the overcurrent protection function of high tension loop, while short circuit can occur and load to open suddenly in bus
The protection to high-pressure system is realized in timely cutoff high circuit in the case where road.
D) after 15 output pwm signal of control unit is to master power switch unit 9, by comparing the anode and cathode of bus
Real-time current, that is, can determine whether high tension loop has occurred and that electric leakage.
E) pre-charging device realizes Real-time Feedback high tension loop state by communication unit 7, receives action command function.
(3) control PTC heating function is realized:
Controller receives heating instructions by can bus communication unit, and after detecting high-pressure system fault-free, control is single
First 15 output pwm signals carry out PTC heating self-test to PTC control unit is opened after PTC power output unit 16.Self-test is normal
Afterwards, it is required according to instruction, integrated temperature sensor feedback signal, adjusts output power, control the temperature of heating system.
(4) detailed control mode and step:
A) control electricity powers on, and the main power cell state of pre-charging device self-test, input voltage, output current value, CAN are logical
Believe circuit, judges whether pre-charging device is faulty；It is faulty, corresponding fault code is exported by CAN, is otherwise carried out subsequent dynamic
Make；
B) the high-voltage electricity voltage value of Real-time Feedback current detection and positive negative side current value；And CAN instruction is received, if receiving
High pressure powers on instruction, first detection major loop input voltage, in voltage range of the voltage beyond setting, i.e., too high or too low, instead
Feedthrough voltage information state and corresponding fault code do not start and whether start main power cell output action；If voltage is normal, then
The current voltage of subsequent high voltage component in CAN communication instruction is detected, if main power cell does not have output action, and high voltage component has
High pressure, the main power cell fault code of warning output；Otherwise it carries out in next step.
C) main power cell output action is executed, is charged to subsequent conditioning circuit, main power cell exports electric current, if current sense
Device detection charging current is abnormal including excessive or is 0, and output is corresponding to be pre-charged fault code, otherwise carries out in next step.
D) when the pressure difference that output voltage detection unit and input voltage measurement unit detect meets sets requirement, control is single
Member 15 exports fixed logic level signal to master power switch unit 9, keeps master power switch unit 9 constantly on, completes high pressure
The precharge function in circuit.In the entire precharging circuit course of work, the positive negative side electric current of real-time detection, if current imbalance, report leakage
Current failure, and main power cell output loop is cut off in time；If detecting, current value is more than the current value of setting, report overcurrent event
Barrier, and main power cell output loop is cut off in time；If detecting, high input voltage range is more than setting range, in time cutting master
Power cell output loop, and export corresponding fault alarm；If detecting, CAN signal is disconnected, Real-time Feedback fault message；
It is whether normal first, in accordance with command detection main circuit voltage electric current if e) pre-charging device receives heating instructions,
When meeting the secure threshold of setting, PTC control unit is opened, small-power is exported first and gives PTC heating sheet, pass through electricity
Stream, the feedback informations such as external PTC temperature judge whether PTC works normally.In the case where meeting given threshold, start according to
Communication instruction exports corresponding power, by the judgement to feedback informations such as electric current and temperature sensors, realizes to heating temperature
Closed-loop control；If controller receives stopping heating instructions, after the Current Voltage and temperature of system meet corresponding threshold value,
PTC control unit is closed, power output is stopped.
If f) controller receives electricity instruction under high pressure, first detection main circuit current, meet the safety of setting in electric current
In the case of lower electricity current range, main power cell output electric current is gradually reduced, the output electric current to be checked that measures meets given threshold
In the case of.Discharging action is executed after delay a period of time, until terminating lower electric mistake in the case that output voltage meets given threshold
Journey.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (5)
1. a kind of pre-charging device for integrating PTC controller, which is characterized in that including inputting high-voltage connector (1), high-voltage insurance
Silk (2), cathodal current detection unit (3), positive current detecting unit (4), filter unit (5), input voltage measurement unit
(6), communication unit (7), low-voltage power supply unit (8), master power switch unit (9), internal temperature detection unit (10), preliminary filling filter
Wave capacitor (11), High voltage output connector (12), output voltage detection unit (13), electrion unit (14), control unit
(15), PTC power output unit (16) and outside PTC temperature sensor unit (17)；
The anode of input high-voltage connector (1) is connected with the left end of high-voltage fuse (2), the input high-voltage connector
(1) cathode is connected with the left end of cathodal current detection unit (3), the cathodal current detection unit (3) and filter unit (5)
Input cathode be connected, the right end of the high-voltage fuse (2) is directly connected with the left end of positive current detecting unit (4)；
The right end of the anode current detecting unit (4) is connected with the input anode of filter unit (5), the filter unit (5)
Output cathode be separately connected the input terminal of master power switch unit (9) and the input positive terminal of input voltage measurement unit (6)
Connection, described control unit (15) respectively with communication unit (7), low-voltage power supply unit (8), internal temperature detection unit (10) and
External PTC temperature sensor unit (17) connection.
2. a kind of pre-charging device for integrating PTC controller according to claim 1, it is characterised in that: the filtering is single
The cathode of first (5) respectively with the cathode of preliminary filling filter capacitor (11), the negative input of input voltage measurement unit (6), output
The negative input of voltage detection unit (13), the negative input of electrion unit (14) and PTC power output unit
(16) negative input is connected, the positive phase of the output end and preliminary filling filter capacitor (11) of the master power switch unit (9)
Connection.
3. a kind of pre-charging device for integrating PTC controller according to claim 1, it is characterised in that: the preliminary filling filter
Wave capacitor (11) anode is inputted with the cathode output end of High voltage output connector (12), the anode of output voltage detection unit (13)
End, the electrode input end of electrion unit (14) are connected with the electrode input end of PTC power output unit (16).
4. a kind of pre-charging device for integrating PTC controller according to claim 1, it is characterised in that: powering on preliminary filling
When, control unit (15) output pwm signal gives master power switch unit (9), controls preliminary filling by positive current detecting unit (4)
Size of current；When output voltage detection unit (13) and input voltage measurement unit (6) pressure difference meet sets requirement, control unit
(15) it exports fixed logic level signal and gives master power switch unit (9), keep master power switch unit (9) constantly on.
5. a kind of pre-charging device for integrating PTC controller according to claim 1, it is characterised in that: according to external PTC
Temperature sensor unit (17) feedback temperature and setting logic, control unit (15) output pwm signal give PTC power output unit
(16)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822208299.6U CN209675961U (en) | 2018-12-27 | 2018-12-27 | A kind of pre-charging device for integrating PTC controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822208299.6U CN209675961U (en) | 2018-12-27 | 2018-12-27 | A kind of pre-charging device for integrating PTC controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209675961U true CN209675961U (en) | 2019-11-22 |
Family
ID=68563741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822208299.6U Active CN209675961U (en) | 2018-12-27 | 2018-12-27 | A kind of pre-charging device for integrating PTC controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209675961U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111009938A (en) * | 2019-11-25 | 2020-04-14 | 苏州蓝石新动力有限公司 | Pre-charging circuit fault diagnosis method and device and MCU |
| CN112747832A (en) * | 2020-12-24 | 2021-05-04 | 华中科技大学 | Heating and self-temperature-feeding fusion type sensor and application thereof |
| CN113059983A (en) * | 2021-03-26 | 2021-07-02 | 奇瑞新能源汽车股份有限公司 | Heating circuit of electric automobile and electric automobile |
| CN113363932A (en) * | 2021-06-07 | 2021-09-07 | 山东建筑大学 | Series short-circuit fault detection and protection circuit based on electrolytic capacitor |
| CN113422352A (en) * | 2021-06-07 | 2021-09-21 | 山东建筑大学 | Strong-current switch circuit capable of automatically detecting short-circuit fault |
-
2018
- 2018-12-27 CN CN201822208299.6U patent/CN209675961U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111009938A (en) * | 2019-11-25 | 2020-04-14 | 苏州蓝石新动力有限公司 | Pre-charging circuit fault diagnosis method and device and MCU |
| CN112747832A (en) * | 2020-12-24 | 2021-05-04 | 华中科技大学 | Heating and self-temperature-feeding fusion type sensor and application thereof |
| CN113059983A (en) * | 2021-03-26 | 2021-07-02 | 奇瑞新能源汽车股份有限公司 | Heating circuit of electric automobile and electric automobile |
| CN113059983B (en) * | 2021-03-26 | 2022-07-15 | 奇瑞新能源汽车股份有限公司 | Heating circuit of electric automobile and electric automobile |
| CN113363932A (en) * | 2021-06-07 | 2021-09-07 | 山东建筑大学 | Series short-circuit fault detection and protection circuit based on electrolytic capacitor |
| CN113422352A (en) * | 2021-06-07 | 2021-09-21 | 山东建筑大学 | Strong-current switch circuit capable of automatically detecting short-circuit fault |
| CN113363932B (en) * | 2021-06-07 | 2022-06-21 | 山东建筑大学 | Series short-circuit fault detection and protection circuit based on electrolytic capacitor |
| CN113422352B (en) * | 2021-06-07 | 2022-06-21 | 山东建筑大学 | Strong-current switch circuit capable of automatically detecting short-circuit fault |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209675961U (en) | A kind of pre-charging device for integrating PTC controller | |
| CN105137336B (en) | Detect the diagnostic method of electric automobile high-voltage relay failure | |
| CN102004222B (en) | Method and device for monitoring state of relay in vehicle-mounted battery management system | |
| CN105790370B (en) | High-low pressure interlock and the method for realizing power-on and power-off using it | |
| CN104993531B (en) | A kind of rush-harvesting and rush-planting power distribution DC charging motor protection device | |
| CN202923410U (en) | High-voltage protection system of power battery and vehicle | |
| CN203854586U (en) | Control circuit for high-voltage power-on/off judging adhesion state of relay of electric vehicle | |
| CN203056953U (en) | Driver and bus capacitor discharge circuit thereof | |
| CN105372549B (en) | High-voltage load short circuit detecting system and method | |
| CN107290676B (en) | Method and device for detecting fusing and open circuit of main fuse of storage battery pack | |
| CN106809037A (en) | Rail vehicle control system and rail vehicle | |
| CN104539029A (en) | Electric vehicle alternating-current charging mode-III control device and electric vehicle alternating-current charging mode-III control method | |
| CN207875401U (en) | High-voltage interlocking detecting system | |
| CN206096374U (en) | On -vehicle battery management system main relay adhesion detection circuitry | |
| CN203519737U (en) | Electric vehicle test system possessing scram and insulation protection functions | |
| CN201928080U (en) | Power supply detecting and switching device | |
| CN108333503A (en) | A kind of pure electric automobile high-voltage relay state detection circuit and method | |
| CN209675960U (en) | A kind of preliminary filling protective device | |
| CN207234401U (en) | A kind of accumulation power supply system | |
| CN207902187U (en) | A kind of electric vehicle low pressure self saving control circuit | |
| CN105375616B (en) | A kind of distribution network feeder terminal supplying power management system and method | |
| CN104924910A (en) | High-voltage distribution board circuit | |
| CN202121336U (en) | Electric automobile battery management system | |
| CN104283263A (en) | Direct-current charging pile main circuit double-control power supply system and control method thereof | |
| CN114204658A (en) | Storage battery pack online capacity checking system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |