CN105790370A - High and low voltage interlocking device and method of using device for realizing power on and power off - Google Patents
High and low voltage interlocking device and method of using device for realizing power on and power off Download PDFInfo
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- CN105790370A CN105790370A CN201610252251.8A CN201610252251A CN105790370A CN 105790370 A CN105790370 A CN 105790370A CN 201610252251 A CN201610252251 A CN 201610252251A CN 105790370 A CN105790370 A CN 105790370A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/446—Initial charging measures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a high and low voltage interlocking device and a method of using the device for realizing power on and power off, which belong to the technical field of circuits. An interlocking switch is parallelly connected onto a low voltage switch, power failure of a low voltage system caused by sudden cutoff of the low voltage switch is prevented, the controller power on and power off state monitoring time is ensured, first low voltage power on and then high voltage power on are realized in the case of power on, and in the case of power off, first high voltage power off and then lower voltage power off are realized, and power safety in the case of power on and power off can be effectively ensured.
Description
Technical field
The present invention relates to circuit engineering field, be specifically related to a kind of high-low pressure interlock and utilize its method realizing power-on and power-off.
Background technology
Electric automobile develops rapidly in China, and wherein electrokinetic cell voltage is higher, has potential insecurity.In general, electric vehicle has high voltage power set of cells and low pressure lead-acid battery to carry out power respectively and power and the low-voltage equipment such as controller is powered.In vehicle operation, the powering on of vehicle high-low circuit, lower electricity order there is strict regulation, to ensure the normally closed of the normal fault diagnosis of controller, relay, it is to avoid cause security incident or damage electrical equipment.
Current power car power-on and power-off order ensures each through software, after low tension switch Guan Bi, controller detects that signal enabling powers on flow process normally, it it is all normally opened relay due to high-voltage relay, ability closed high relay after controller is charged, so it is able to ensure that low pressure first powers on, powers on after high pressure.But when being powered off, it is possible to cause the power-off of low-pressure system elder generation, and high-pressure system power-off again, it is easy to potential safety hazard occurs.
Summary of the invention
(1) to solve the technical problem that
The technical problem to be solved in the present invention is: how to ensure high-low pressure power on normally, power-off, it is prevented that the potential safety hazard that maloperation causes.
(2) technical scheme
In order to solve above-mentioned technical problem, the invention provides a kind of high-low pressure interlock, including low-pressure system and high-pressure system, described low-pressure system includes low tension switch 2, interlock switch 3, controller 4 and accumulator 1, described controller 4 one end is received on low tension battery 1 positive pole by low tension switch 2 and interlock switch 3, and the other end is connected with accumulator 1 negative pole, and described interlock switch 3 and low tension switch 2 are in parallel, described low tension switch 2 is the hand switch on car, and interlock switch 3 is controlled by controller 4；
Described high-pressure system includes power battery pack 5, preliminary filling relay 8, main positive relay 9, main negative relay 7, load 6, preliminary filling resistance 10 and preliminary filling fuse 11；Power battery pack 5, main positive relay 9, load 6, main negative relay 7 are followed in series to form high tension loop, and preliminary filling relay 8, main positive relay 9 and main negative 7 three relays of relay control by described controller 4；Preliminary filling relay 8, preliminary filling resistance 10 and preliminary filling fuse 11 are followed in series to form preliminary filling branch road, preliminary filling branch road is connected to the two ends of main positive relay 9, preliminary filling resistance 10 is for controlling size of current when preliminary filling branch road accesses, the first voltage sensor 13 is arranged at power battery pack 5 two ends, the second voltage sensor 14 is arranged at load 6 two ends, also arranging current sensor 15 in high tension loop, current sensor 15 one end connects one end of power battery pack 5, and the other end connects one end of main negative relay 7；
Described controller 4 for controlling the upper and lower electricity of high and low pressure system by detecting high-pressure system state, and during to guarantee to power on, low-pressure system first powers on and powers on after high-pressure system, and during lower electricity, high-pressure system is lower electricity first, lower electricity after low-pressure system.
Preferably, it is also associated with fuse 12 between load 6 and main negative relay 7.
Preferably, described preliminary filling resistance 10 is aluminum casing resistor.
Present invention also offers a kind of method utilizing described device to realize electric motor car power-on and power-off,
The flow process that powers on comprises the following steps:
Step 101, low tension switch 2 closes, and low-pressure system powers on；
Step 102, controller 4 controls preliminary filling relay 8, main negative relay 7 closes；
Step 103, the voltage data that the first voltage sensor 13 and the second voltage sensor 14 are gathered by controller 4 is analyzed, and when load 6 terminal voltage is more than the 80% of power battery pack 5 both end voltage, enters step 105；When detect load 6 terminal voltage less than or equal to power battery pack 5 both end voltage 80% time, then enter step 104；
Step 105, main positive relay 9 closes, and interlock switch 3 closes, and preliminary filling relay 8 disconnects, and high-pressure system powers on, and powers on successfully；
Step 104, it is judged that pre-charging time, if pre-charging time is less than predetermined value T0, then preliminary filling not yet completes, and enters step 106；If pre-charging time is more than or equal to predetermined value T0, then enter step 107；
Step 106, waits；
Step 107, disconnects preliminary filling relay 8, main negative relay 7, sends the failure fault message that powers on；
Lower electric current journey comprises the following steps:
Step 201, manually disconnects low tension switch 2；
Step 202, controller 4 detects high-pressure system electric current, if electric current is less than certain threshold value, enters step 204；Otherwise enter step 203；
Step 204, enters step 206 after disconnecting main positive relay 9；
Step 203, request enters step 205 after stopping load 6 work；
Step 205, it is judged that the waiting time, whether more than predetermined value, then enters step 207 if greater than predetermined value；Otherwise return to step 202 and continue detection electric current；
Step 207, sends bus and crosses stream, lower electricity failure fault message；
Step 206, it is judged that whether load 6 both end voltage is less than predetermined value, if less than then entering step 208；Otherwise enter step 209；
Step 208, disconnects main negative relay 7, high-pressure system power-off, then disconnects interlock switch 3, low-pressure system power-off, lower electricity success；
Step 209, sends lower electricity failure fault.
(3) beneficial effect
The present invention is by a low tension switch interlock switch in parallel, it is prevented that low tension switch disconnects suddenly the low-pressure system power-off caused, it is ensured that the status monitoring time of the power-on and power-off of controller, it is ensured that when powering on, low pressure first powers on and powers on after high pressure；During lower electricity, high pressure is lower electricity first, lower electricity after low pressure, it is possible to the effective Electrical Safety ensureing power-on and power-off.
Accompanying drawing explanation
The low-pressure system of the interlock that Fig. 1 provides for the embodiment of the present invention connects figure；
The high-pressure system of the interlock that Fig. 2 provides for the embodiment of the present invention connects figure；
The control strategy flow chart that powers on that Fig. 3 position embodiment of the present invention provides；
The lower electric control strategic process figure that Fig. 4 provides for the embodiment of the present invention.
Detailed description of the invention
For making the purpose of the present invention, content and advantage clearly, below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.
Voltage interlock provided by the invention, including high-pressure system and low-pressure system, low-pressure system connects as it is shown in figure 1, mainly comprise low tension switch 2, interlock switch 3, controller 4 and low tension battery 1.Controller 4 one end (feeder ear) is received on low tension battery 1 positive pole by low tension switch 2 and interlock switch 3, and the other end is connected with accumulator 1 negative pole.Interlock switch 3 and low tension switch 2 are in parallel.Low tension switch 2 is the hand switch on car, and interlock switch 3 is controlled by controller 4.
Voltage interlock provided by the invention, the high tension loop of high-pressure system composition is as in figure 2 it is shown, mainly include power battery pack 5, and preliminary filling relay 8, main positive relay 9, master bears relay 7 and load 6.Three relays control by the controller 4 of Fig. 1, and they are normal open switch, and namely when controller does not provide the relay signal of telecommunication, these three relay all disconnects.In order to when preventing from powering on the heavy current impact of capacitive load and damage relay, high tension loop is provided with preliminary filling branch road, preliminary filling props up route preliminary filling relay 8, preliminary filling resistance 10, preliminary filling fuse 11 are constituted, preliminary filling resistance 10 is to control size of current when preliminary filling branch road accesses, it is preferable that aluminum casing resistor is to dispel the heat.Preliminary filling fuse 11 prevented stream from preliminary filling relay 8 being caused damage.High tension loop also arranges fuse 12, it is prevented that cross the major accident that stream causes.In order to detect power-on and power-off state, all arrange first voltage sensor the 13, second voltage sensor 14 respectively at power battery pack 5 two ends and load 6 two ends, also arrange current sensor 15 in high tension loop.Described master positive relay 9 one end connects power battery pack 5 positive pole, and one end is connected with load 6 positive pole.Negative relay 7 one end of described master connects power battery pack 5 negative pole, and one end is connected with fuse 12, and fuse 12 is connected with load 6 negative pole.
Provided by the invention power on flow process as shown in Figure 3.Initially entering step 101, low tension switch 2 closes, and low-pressure system powers on.Entering step 102, controller 4 controls preliminary filling relay 8, main negative relay 7 closes.Enter step 103, the voltage data that first voltage sensor 13 and the second voltage sensor 14 are gathered by controller 4 is analyzed, when load 6 terminal voltage is more than the 80% of power battery pack 5 both end voltage, enter step 105, main positive relay 9 closes, and interlock switch 3 closes, and preliminary filling relay 8 disconnects, high-pressure system powers on, and powers on successfully.When detect load 6 terminal voltage less than or equal to power battery pack 5 both end voltage 80% time, then judge pre-charging time (step 104), if pre-charging time is less than predetermined value T0, then preliminary filling not yet completes, it is not operated (step 106), if pre-charging time is be more than or equal to predetermined value T0, then disconnects preliminary filling relay 8, main negative relay 7, send failure fault message (step 107) that powers on.
Lower electric current journey provided by the invention is as shown in Figure 4.During lower electricity, manually disconnecting low tension switch 2 (step 201), controller 4 detects high-pressure system electric current (step 202), if electric current is less than certain threshold value, disconnects main positive relay 9 (step 204)；Otherwise request stopping load 6 works (step 203), judge that whether the waiting time is more than predetermined value (step 205) again, then send bus if greater than predetermined value and cross stream (being detected by current sensor 15), lower electricity failure fault (step 207), otherwise returns to step 202 and continues detection electric current.After step 204 disconnects main positive relay 9, then judge that whether load 6 both end voltage is less than predetermined value (step 206), if less than then disconnecting main negative relay 7, high-pressure system power-off, controller 4 disconnects interlock switch 3, low-pressure system power-off, lower electricity success (step 208) again；Otherwise controller 4 sends lower electricity failure fault (step 209).
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the technology of the present invention principle; can also making some improvement and deformation, these improve and deformation also should be regarded as protection scope of the present invention.
Claims (4)
1. a high-low pressure interlock, it is characterized in that, including low-pressure system and high-pressure system, described low-pressure system includes low tension switch (2), interlock switch (3), controller (4) and accumulator (1), described controller (4) one end is received on low tension battery (1) positive pole by low tension switch (2) and interlock switch (3), the other end is connected with accumulator (1) negative pole, described interlock switch (3) and low tension switch (2) are in parallel, described low tension switch (2) is the hand switch on car, interlock switch (3) is controlled by controller (4)；
Described high-pressure system includes power battery pack (5), preliminary filling relay (8), main positive relay (9), main negative relay (7), load (6), preliminary filling resistance (10) and preliminary filling fuse (11)；Power battery pack (5), main positive relay (9), load (6), main negative relay (7) are followed in series to form high tension loop, and preliminary filling relay (8), main positive relay (9) and main negative (7) three relays of relay control by described controller (4)；Preliminary filling relay (8), preliminary filling resistance (10) and preliminary filling fuse (11) are followed in series to form preliminary filling branch road, preliminary filling branch road is connected to the two ends of main positive relay (9), preliminary filling resistance (10) is for controlling size of current when preliminary filling branch road accesses, the first voltage sensor (13) is arranged at power battery pack (5) two ends, the second voltage sensor (14) is arranged at load (6) two ends, current sensor (15) is also arranged in high tension loop, current sensor (15) one end connects one end of power battery pack (5), the other end connects one end of main negative relay (7)；
Described controller (4) for controlling the upper and lower electricity of high and low pressure system by detecting high-pressure system state, and during to guarantee to power on, low-pressure system first powers on and powers on after high-pressure system, and during lower electricity, high-pressure system is lower electricity first, lower electricity after low-pressure system.
2. high-low pressure interlock as claimed in claim 1, it is characterised in that be also associated with fuse (12) between described load (6) and main negative relay (7).
3. high-low pressure interlock as claimed in claim 1 or 2, it is characterised in that described preliminary filling resistance (10) is aluminum casing resistor.
4. the method that the device utilized described in claim 1 or 2 or 3 realizes power-on and power-off, it is characterised in that
The flow process that powers on comprises the following steps:
Step 101, low tension switch (2) closes, and low-pressure system powers on；
Step 102, controller (4) controls preliminary filling relay (8), main negative relay (7) Guan Bi；
Step 103, the voltage data that first voltage sensor (13) and the second voltage sensor (14) are gathered by controller (4) is analyzed, when load (6) both end voltage is more than the 80% of power battery pack (5) both end voltage, enter step 105；When detect load (6) both end voltage less than or equal to power battery pack (5) both end voltage 80% time, then enter step 104；
Step 105, main positive relay (9) Guan Bi, interlock switch (3) closes, and preliminary filling relay (8) disconnects, and high-pressure system powers on, and powers on successfully；
Step 104, it is judged that pre-charging time, if pre-charging time is less than predetermined value T0, then preliminary filling not yet completes, and enters step 106；If pre-charging time is more than or equal to predetermined value T0, then enter step 107；
Step 106, waits；
Step 107, disconnects preliminary filling relay (8), main negative relay (7), sends the failure fault message that powers on；
Lower electric current journey comprises the following steps:
Step 201, manually disconnects low tension switch (2)；
Step 202, controller (4) detection high-pressure system electric current, if electric current is less than certain threshold value, enter step 204；Otherwise enter step 203；
Step 204, disconnects main positive relay (9) and enters step 206 afterwards；
Step 203, request enters step 205 after stopping load (6) work；
Step 205, it is judged that the waiting time, whether more than predetermined value, then enters step 207 if greater than predetermined value；Otherwise return to step 202 and continue detection electric current；
Step 207, sends bus and crosses stream, lower electricity failure fault message；
Step 206, it is judged that whether load (6) both end voltage is less than predetermined value, if less than then entering step 208；Otherwise enter step 209；
Step 208, disconnects main negative relay (7), high-pressure system power-off, then disconnects interlock switch (3), low-pressure system power-off, lower electricity success；
Step 209, sends lower electricity failure fault.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610252251.8A CN105790370B (en) | 2016-04-21 | 2016-04-21 | High-low pressure interlock and the method for realizing power-on and power-off using it |
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| CN201610252251.8A CN105790370B (en) | 2016-04-21 | 2016-04-21 | High-low pressure interlock and the method for realizing power-on and power-off using it |
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| CN105790370B CN105790370B (en) | 2018-12-07 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105966250A (en) * | 2016-07-21 | 2016-09-28 | 合肥威博尔汽车技术有限公司 | Low-speed electric car high-voltage power-on management method |
| CN107264284A (en) * | 2017-05-19 | 2017-10-20 | 重庆凯瑞电动汽车***有限公司 | The method of electric repeat circuit control in high pressure |
| CN109017315A (en) * | 2018-08-23 | 2018-12-18 | 北京理工大学 | A kind of power supply Self-Protection Subsystem of hybrid vehicle and method |
| CN109830940A (en) * | 2017-11-22 | 2019-05-31 | 湖南中车时代电动汽车股份有限公司 | A kind of circuit protection device and method for electric car |
| CN109927555A (en) * | 2017-12-15 | 2019-06-25 | 比亚迪股份有限公司 | Electrification control method, device, storage medium and the train of trailer system |
| CN110103717A (en) * | 2019-04-25 | 2019-08-09 | 北京汽车股份有限公司 | High-voltage interlocking detection system and vehicle |
| CN110364993A (en) * | 2019-03-01 | 2019-10-22 | 华为技术有限公司 | A kind of break-up device and inverter system |
| CN112462315A (en) * | 2020-11-25 | 2021-03-09 | 中国第一汽车股份有限公司 | Current sensor diagnosis method and device, vehicle and storage medium |
| CN113580938A (en) * | 2021-05-28 | 2021-11-02 | 江西五十铃汽车有限公司 | Diesel oil extended-range light truck power-on and power-off control method |
| CN114475249A (en) * | 2020-10-28 | 2022-05-13 | 湖南中车智行科技有限公司 | High-low voltage power-off time sequence control method, device and system of new energy vehicle |
| WO2024007829A1 (en) * | 2022-07-06 | 2024-01-11 | 中国第一汽车股份有限公司 | Control method and apparatus for dc/dc integrated high-voltage relay system |
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| CN105966250B (en) * | 2016-07-21 | 2018-05-18 | 合肥威博尔汽车技术有限公司 | A kind of low-speed electronic automobile high pressure powers on management method |
| CN105966250A (en) * | 2016-07-21 | 2016-09-28 | 合肥威博尔汽车技术有限公司 | Low-speed electric car high-voltage power-on management method |
| CN107264284A (en) * | 2017-05-19 | 2017-10-20 | 重庆凯瑞电动汽车***有限公司 | The method of electric repeat circuit control in high pressure |
| CN109830940B (en) * | 2017-11-22 | 2020-08-25 | 湖南中车时代电动汽车股份有限公司 | Circuit protection device and method for electric automobile |
| CN109830940A (en) * | 2017-11-22 | 2019-05-31 | 湖南中车时代电动汽车股份有限公司 | A kind of circuit protection device and method for electric car |
| CN109927555A (en) * | 2017-12-15 | 2019-06-25 | 比亚迪股份有限公司 | Electrification control method, device, storage medium and the train of trailer system |
| CN109927555B (en) * | 2017-12-15 | 2021-01-19 | 比亚迪股份有限公司 | Power-on control method and device for traction system, storage medium and train |
| CN109017315A (en) * | 2018-08-23 | 2018-12-18 | 北京理工大学 | A kind of power supply Self-Protection Subsystem of hybrid vehicle and method |
| CN109017315B (en) * | 2018-08-23 | 2020-07-14 | 北京理工大学 | Power supply self-protection system and method for hybrid power vehicle |
| WO2020177650A1 (en) * | 2019-03-01 | 2020-09-10 | 华为技术有限公司 | Breaker device and inverter system |
| CN110364993A (en) * | 2019-03-01 | 2019-10-22 | 华为技术有限公司 | A kind of break-up device and inverter system |
| CN113875111A (en) * | 2019-03-01 | 2021-12-31 | 华为数字能源技术有限公司 | Breaking device and inverter system |
| CN113875111B (en) * | 2019-03-01 | 2024-03-01 | 华为数字能源技术有限公司 | Breaking device and inverter system |
| US11979019B2 (en) | 2019-03-01 | 2024-05-07 | Huawei Digital Power Technologies Co., Ltd. | Direct current breaker feeding an inverter |
| CN110103717B (en) * | 2019-04-25 | 2020-11-17 | 北京汽车股份有限公司 | High-voltage interlocking detection system and vehicle |
| CN110103717A (en) * | 2019-04-25 | 2019-08-09 | 北京汽车股份有限公司 | High-voltage interlocking detection system and vehicle |
| CN114475249A (en) * | 2020-10-28 | 2022-05-13 | 湖南中车智行科技有限公司 | High-low voltage power-off time sequence control method, device and system of new energy vehicle |
| CN112462315A (en) * | 2020-11-25 | 2021-03-09 | 中国第一汽车股份有限公司 | Current sensor diagnosis method and device, vehicle and storage medium |
| CN113580938A (en) * | 2021-05-28 | 2021-11-02 | 江西五十铃汽车有限公司 | Diesel oil extended-range light truck power-on and power-off control method |
| CN113580938B (en) * | 2021-05-28 | 2023-08-04 | 江西五十铃汽车有限公司 | Power-on and power-off control method for diesel range-extending light truck |
| WO2024007829A1 (en) * | 2022-07-06 | 2024-01-11 | 中国第一汽车股份有限公司 | Control method and apparatus for dc/dc integrated high-voltage relay system |
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