CN105932639A - Overheat protection system, high voltage system and electric vehicle - Google Patents
Overheat protection system, high voltage system and electric vehicle Download PDFInfo
- Publication number
- CN105932639A CN105932639A CN201610370632.6A CN201610370632A CN105932639A CN 105932639 A CN105932639 A CN 105932639A CN 201610370632 A CN201610370632 A CN 201610370632A CN 105932639 A CN105932639 A CN 105932639A
- Authority
- CN
- China
- Prior art keywords
- temperature
- catalyst
- circuit
- overtemperature protection
- protection system
- 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.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
- H02H5/047—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using a temperature responsive switch
-
- 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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
- H02H7/222—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices for switches
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Secondary Cells (AREA)
- Emergency Protection Circuit Devices (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses an overheat protection device, arranged on a high voltage system of an electric vehicle. The high voltage system comprises a contactor, a high voltage circuit and a high voltage interlock circuit. The overheat protection device comprises a temperature sensitive switch arranged together with the contactor, and the temperature sensitive switch is integrated into the high voltage interlock circuit or connected to a battery management system of the electric vehicle via an independent signal circuit; when the temperature detected by the temperature sensitive switch reaches or exceeds a critical temperature, the high voltage circuit is interrupted by cutting off the high voltage interlock circuit, or the interruption of the high voltage circuit is controlled by the battery management system, and thereby the high voltage system is prevented from being damaged by the overheated contactor.
Description
Technical field
The application relates to electric automobiles, be specifically related to the overtemperature protection system in electric vehicle high-pressure system,
There is high-pressure system and the electric vehicle thereof of overtemperature protection system.
Background technology
The safety of electric vehicle receives much concern always.And be applied in electric vehicle, in particular for high pressure
(HV) high pressure in system disconnect system, such as: catalyst, fuse, manually disconnect device (MSD:
Manual Service Disconnect) etc., it is the key equipment of security critical.
Under normal circumstances, described catalyst has a limited electrical contact resistance.This resistance is by connecing
Touch what parameter limited, such as pressure that microstructure between contact surface with macro surface fineness, contacts,
The material of contact, temperature, the chemical characteristic (that is, oxide skin(coating)) of contact surface, and flow through contact
The electric current etc. of device.
Contact resistance in catalyst can produce thermal losses when electric current flows through catalyst.Meanwhile, catalyst
In this contact resistance again along with the continuity of the time of use and aging and change.Aging meeting causes contact electricity
The increase of resistance.Therefore, aging meeting causes Contact Temperature and the rising of final catalyst temperature.
In the beginning of application, because the physical property of the mechanical performance of contact mechanism and contact surface is optimum,
Contact resistance is typically located at minimum.In use, catalyst is by loading and different at electric current
At a temperature of off and on repeatedly.And the mechanical performance of the frame for movement of catalyst and the physical property of contact surface
The change of energy will cause the continuous rising of contact resistance.
The increase using the time along with catalyst is constantly raised and reaches manufacturer and makes a reservation for by contact resistance
Value.It is equal to reach the end of life of catalyst when meeting or exceeding this value.
But, generally, between the contact resistance and the contact resistance of end of life that begin of application
There is the coefficient of up to 10 times, result from the thermal losses in catalyst raise with they contact electricity
The rising of resistance is ratio, and the temperature of the catalyst in any given drive load cycle is had huge by this
Impact.
In order to avoid too high surdimensionnement catalyst, need in principle to consider actual cycle and hypothesis
The worst forever abused may and production cost.
But, even if having taken into full account these factors whole, the damage of undetected assembly still can be led
Cause the strong of contact resistance to promote and the most overheated quadratic effect caused, and cause damage or the funeral of function
Lose.
Summary of the invention
In view of this, the application provides a kind of and can effectively protect the overtemperature protection system of high-pressure system, high pressure system
System and electric vehicle.
The application realizes one of by following technical solution the purpose of the application: a kind of overtemperature protection system,
Being arranged in the high-pressure system of electric vehicle, described high-pressure system includes catalyst, high-tension circuit and height
Pressure interlock circuit.Described overtemperature protection system includes the temperature responsive switch being set together with catalyst,
And this temperature responsive switch is integrated in high voltage interlock circuit or is connected to by an independent signal circuit
The battery management system of electric vehicle；The temperature detected when temperature responsive switch meets or exceeds stagnation temperature
When spending, interrupt high-tension circuit by cutoff high interlock circuit, or controlled by battery management system
Interrupt high-tension circuit.
Further, described temperature responsive switch is arranged at the shell of catalyst；Temperature responsive switch detects
Temperature be catalyst environment temperature.
Further, described temperature responsive switch is integrated in catalyst；The temperature of temperature responsive switch detection
Degree is catalyst temperature.
Further, described interruption includes reducible temporary transient interruption；Temperature responsive switch is reducible
Temperature responsive switch.
Further, described interruption includes permanent discontinuation；Temperature responsive switch is that the most reducible temperature is sensitive
Switch.
Further, described interruption includes to pass through or allowing the current reduction by catalyst.
Further, described high-pressure system also includes current inductor, is used for detecting size of current.
Further, described cutoff high interlock circuit, including being switched to open circuit, ground connection or receiving any
One on other current potentials.
Further, described temperature responsive switch is bimetallic temperature regulator.
The application two purposes realizing the application by following technical solution: a kind of high-pressure system, if
It is placed on electric vehicle, including catalyst, high-tension circuit and high voltage interlock circuit, described high-pressure system
Also include overtemperature protection system as described above.
Further, described high-pressure system also includes that current sensor, pre-charge resistor contact with preliminary filling
One or more in device three, and the one or more and high voltage interlock circuit in three and catalyst
Between by bus connect be integrated in a shell, constitute high-pressure system subsystem.
Further, by interrupting high-tension circuit, cut off described high-pressure system, or thermally contact with crossing
The subsystem that device connects.
The application three purposes realizing the application by following technical solution: a kind of electric vehicle, its
Including battery management system and high-pressure system as described above.
Compared with prior art, the present invention is by arranging temperature responsive switch, and detection catalyst or catalyst are all
The temperature enclosed；When temperature meets or exceeds critical temperature, interrupt and the high-tension circuit in high-pressure system,
Thus can prevent overheated catalyst from damaging high-pressure system.
Accompanying drawing explanation
Fig. 1 is the structural representation of high-pressure system of the present invention.
Detailed description of the invention
Here will illustrate illustrative embodiments in detail, its example represents in the accompanying drawings.Following
When description relates to accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represents same or analogous and wants
Element.Embodiment described in following exemplary embodiment does not represent own consistent with the application
Embodiment.On the contrary, they only with as appended claims describes in detail, some sides of the application
The example of the apparatus and method that face is consistent.
It is only merely for describing the purpose of particular implementation at term used in this application, and is not intended to be limiting
The application." a kind of ", " described " of singulative used in the application and appended claims
" it is somebody's turn to do " be also intended to include most form, unless context clearly shows that other implications.It is also understood that
Term "and/or" used herein refer to and comprise any of one or more project of listing being associated or
Likely combine.
In order to prevent secondary damage or the forfeiture of security function that overheated catalyst causes, most preferably carry
For an overtemperature protection system, before exceeding critical temperature and causing any further damage, it runs
And close high-pressure system or its subsystem.
Under normal circumstances, catalyst and other assembling components are also integrated together, such as current sensor,
Pre-charge resistor, bus, and it is embedded in subsystem, such as embed the power relay in high-tension battery total
Become (PRA).Described high-pressure system also includes current sensor, pre-charge resistor and preliminary filling catalyst
One or more in three, and one or more and high voltage interlock circuit in three and catalyst it
Between by bus connect be integrated in a subsystem enclosure, constitute high-pressure system subsystem.
High-tension battery generally connects a low-voltage circuit, i.e. high voltage interlock circuit (HVIL).If high pressure is mutual
Lock loop is destroyed (such as, if one attempt to remove MSD or open an adapter), and it is to high pressure
Chopper sends a signal, to interrupt high-tension circuit.
With reference to Fig. 1, specifically, the present invention relates to a kind of electric vehicle, high-pressure system and overheated guarantor
Protection unit.Described electric vehicle includes high-pressure system.Described high-pressure system include high-tension circuit, catalyst,
High voltage interlock circuit and overtemperature protection system.Further, described high-pressure system also includes current sense
The assemblies such as device, pre-charge resistor and bus.Described high-tension battery is as an independent part, Ke Yishi
Individual components, it is also possible to be considered as a part for high-pressure system.
Described overtemperature protection system includes the temperature responsive switch being set together with catalyst.In Fig. 1 institute
In the embodiment shown, this temperature responsive switch is integrated in the high-voltage interlocking electricity of high-pressure system inner high voltage battery
Lu Zhong.In another embodiment, this temperature responsive switch is connected to electricity by an independent signal circuit
The battery management system (BMS) of motor-car.
When the temperature that temperature responsive switch detects meets or exceeds critical temperature, mutual by cutoff high
Lock circuit interrupts high-tension circuit, or controls to interrupt high-tension circuit by battery management system.
Further, described cutoff high interlock circuit, including being switched to open circuit, ground connection or receiving any
On other current potentials.That is, in order to adapt to different types of high-voltage interlocking loop, high-voltage interlocking loop can be cut
Change to open circuit, or high-voltage interlocking loop ground connection, or receive any other current potential.
Further, described temperature responsive switch is arranged on the shell of catalyst.Temperature responsive switch is examined
The temperature surveyed is catalyst environment temperature.Alternatively, described temperature responsive switch is integrated in catalyst；
The temperature of temperature responsive switch detection is catalyst temperature.The sensitivity of switch can be according to specifically applying selection.
Further, described interruption includes reducible temporary transient interruption or permanent discontinuation.It is temporary transient when interrupting
Time, use reducible temperature responsive switch, until temperature is reduced to a safety value.It is forever when interrupting
When interrupting for a long time, by using the most reducible temperature responsive switch to make it by permanent interruption.In this feelings
Under condition, PRA need keep in repair or change.
It is connected to the battery management system of electric vehicle by an independent signal circuit in temperature responsive switch
(BMS) in embodiment, during battery management system can also permanently or temporarily (recover until hot)
Power-off pond.
In another embodiment, described interruption also includes to pass through or allowing to be dropped by the electric current of catalyst
Low.Specifically, whether the triggering of temperature responsive switch exceedes the conditions such as service life to catalyst is relevant,
The possible not exclusively permanent shut-down battery of battery management system, but the electric current adjusting permission substituted, in order to pacify
Entirely, can be by current reduction to minima.By this adjustment of the electric current allowing to flow through catalyst (is subtracted
Few), thermal losses is also reduced by.In this case, battery can be straight with the performance number continuation safe operation reduced
To end of life.Described high-pressure system also includes current inductor, is used for detecting size of current.
In one embodiment, described temperature responsive switch, is bimetallic temperature regulator.When temperature being detected
When spending high, high voltage interlock circuit can get involved or battery management system is notified, and high-tension circuit is interrupted.
Really, described temperature responsive switch can also be the heat-sensitive components of other forms.
The present invention temperature by arranging temperature responsive switch, around detection catalyst or catalyst；Work as temperature
When meeting or exceeding critical temperature, interrupt with high-pressure system in high-tension circuit, thus can prevent overheated
Catalyst damages high-pressure system.
Alternatively, described interruption high-tension circuit, can cut off whole high-pressure system, or cut off with overheated
The subsystem that catalyst connects.
In superincumbent description, elaborate the details of technical scheme, but, people in the art
Member will appreciate that, the invention is not restricted to the detail listed by above-described embodiment, but can be in right
Require change in limited range.
The foregoing is only the better embodiment of the application, not in order to limit the application, all at this
Within the spirit of application and principle, any modification, equivalent substitution and improvement etc. done, should be included in this
Within the scope of application protection.
Claims (13)
1. an overtemperature protection system, is arranged in the high-pressure system of electric vehicle, described high-pressure system bag
Include catalyst, high-tension circuit and high voltage interlock circuit, it is characterised in that: described overtemperature protection system bag
Include the temperature responsive switch being set together with catalyst, and this temperature responsive switch is integrated in high pressure mutual
The battery management system of electric vehicle in lock circuit or it is connected to by an independent signal circuit；Work as temperature
When the temperature that sentive switch detects meets or exceeds critical temperature, in being come by cutoff high interlock circuit
Broken height volt circuit, or control to interrupt high-tension circuit by battery management system.
Overtemperature protection system the most according to claim 1, it is characterised in that: described temperature sensitivity is opened
Close the shell being arranged at catalyst；The temperature of temperature responsive switch detection is catalyst environment temperature.
Overtemperature protection system the most according to claim 1, it is characterised in that: described temperature sensitivity is opened
Pass is integrated in catalyst；The temperature of temperature responsive switch detection is catalyst temperature.
Overtemperature protection system the most according to claim 1, it is characterised in that: described interruption includes can
The temporary transient interruption resetted；Temperature responsive switch is reducible temperature responsive switch.
Overtemperature protection system the most according to claim 1, it is characterised in that: described interruption includes forever
Interrupt for a long time；Temperature responsive switch is the most reducible temperature responsive switch.
Overtemperature protection system the most according to claim 1, it is characterised in that: described interruption include by
By or allow by the current reduction of catalyst.
Overtemperature protection system the most according to claim 6, it is characterised in that: described high-pressure system is also
Including current inductor, it is used for detecting size of current.
Overtemperature protection system the most according to claim 1, it is characterised in that: described cutoff high is mutual
Lock circuit, including being switched to open circuit, ground connection or receiving the one on any other current potential.
Overtemperature protection system the most according to claim 1, it is characterised in that: described temperature sensitivity is opened
Close as bimetallic temperature regulator.
10. a high-pressure system, is arranged on electric vehicle, including catalyst, high-tension circuit and height
Pressure interlock circuit, it is characterised in that: high-pressure system also includes as described in any one of claim 1 to 9
Overtemperature protection system.
11. high-pressure systems according to claim 10, it is characterised in that: described high-pressure system is also wrapped
Include in current sensor, pre-charge resistor and preliminary filling catalyst three is one or more, and three
In one or more be integrated in a shell with being connected by bus between high voltage interlock circuit and catalyst
In, constitute the subsystem of high-pressure system.
12. high-pressure systems according to claim 11, it is characterised in that: by interrupting high-tension circuit,
Cut off described high-pressure system, or the subsystem being connected with overheated catalyst.
13. 1 kinds of electric vehicles, it is characterised in that: include battery management system and such as claim 9
To the high-pressure system described in 11 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610370632.6A CN105932639A (en) | 2016-05-30 | 2016-05-30 | Overheat protection system, high voltage system and electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610370632.6A CN105932639A (en) | 2016-05-30 | 2016-05-30 | Overheat protection system, high voltage system and electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105932639A true CN105932639A (en) | 2016-09-07 |
Family
ID=56841548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610370632.6A Pending CN105932639A (en) | 2016-05-30 | 2016-05-30 | Overheat protection system, high voltage system and electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105932639A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106427621A (en) * | 2016-09-30 | 2017-02-22 | 奇瑞汽车股份有限公司 | High-voltage loop control device and method for electric automobile |
| CN108045231A (en) * | 2017-12-14 | 2018-05-18 | 普汽新能（北京）科技有限公司 | High voltage distribution box is used in a kind of batteries of electric automobile bag |
| CN109177808A (en) * | 2018-09-20 | 2019-01-11 | 广州小鹏汽车科技有限公司 | The detection method and device of the contactor state of electric car, battery charger |
| CN109677268A (en) * | 2018-12-30 | 2019-04-26 | 浙江众泰汽车制造有限公司 | A kind of electric automobile power battery high-voltage interlocking protection system and method |
| CN110892600A (en) * | 2017-07-10 | 2020-03-17 | Abb瑞士股份有限公司 | Charging system |
| CN114600311A (en) * | 2019-08-27 | 2022-06-07 | 伯恩斯公司 | Connector with integrated thermal cut-off device for battery pack |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2935459Y (en) * | 2006-07-03 | 2007-08-15 | 正泰集团股份有限公司 | AC contactor with thermal protective function |
| CN201966137U (en) * | 2011-04-19 | 2011-09-07 | 襄阳冲亚电器有限公司 | Protection switch of motor |
| CN202353190U (en) * | 2011-12-14 | 2012-07-25 | 北京普莱德新能源电池科技有限公司 | Safety device for battery pack of electromobile |
| CN203788009U (en) * | 2014-03-13 | 2014-08-20 | 观致汽车有限公司 | Disconnection control system of battery assembly, and battery assembly and vehicle with system |
| CN104192080A (en) * | 2014-09-11 | 2014-12-10 | 观致汽车有限公司 | Circuit management system and method of vehicle |
| CN204947580U (en) * | 2015-09-18 | 2016-01-06 | 盐城利维线缆有限公司 | A kind of A.C. contactor protective device |
-
2016
- 2016-05-30 CN CN201610370632.6A patent/CN105932639A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2935459Y (en) * | 2006-07-03 | 2007-08-15 | 正泰集团股份有限公司 | AC contactor with thermal protective function |
| CN201966137U (en) * | 2011-04-19 | 2011-09-07 | 襄阳冲亚电器有限公司 | Protection switch of motor |
| CN202353190U (en) * | 2011-12-14 | 2012-07-25 | 北京普莱德新能源电池科技有限公司 | Safety device for battery pack of electromobile |
| CN203788009U (en) * | 2014-03-13 | 2014-08-20 | 观致汽车有限公司 | Disconnection control system of battery assembly, and battery assembly and vehicle with system |
| CN104192080A (en) * | 2014-09-11 | 2014-12-10 | 观致汽车有限公司 | Circuit management system and method of vehicle |
| CN204947580U (en) * | 2015-09-18 | 2016-01-06 | 盐城利维线缆有限公司 | A kind of A.C. contactor protective device |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106427621A (en) * | 2016-09-30 | 2017-02-22 | 奇瑞汽车股份有限公司 | High-voltage loop control device and method for electric automobile |
| CN106427621B (en) * | 2016-09-30 | 2019-07-09 | 奇瑞汽车股份有限公司 | A kind of high voltage loop of electric automobile control device and method |
| CN110892600A (en) * | 2017-07-10 | 2020-03-17 | Abb瑞士股份有限公司 | Charging system |
| CN110892600B (en) * | 2017-07-10 | 2023-08-04 | Abb电动交通有限公司 | Charging system |
| CN108045231A (en) * | 2017-12-14 | 2018-05-18 | 普汽新能（北京）科技有限公司 | High voltage distribution box is used in a kind of batteries of electric automobile bag |
| CN109177808A (en) * | 2018-09-20 | 2019-01-11 | 广州小鹏汽车科技有限公司 | The detection method and device of the contactor state of electric car, battery charger |
| CN109177808B (en) * | 2018-09-20 | 2023-08-29 | 广州小鹏汽车科技有限公司 | Method and device for detecting state of contactor of electric automobile and battery charging circuit |
| CN109677268A (en) * | 2018-12-30 | 2019-04-26 | 浙江众泰汽车制造有限公司 | A kind of electric automobile power battery high-voltage interlocking protection system and method |
| CN114600311A (en) * | 2019-08-27 | 2022-06-07 | 伯恩斯公司 | Connector with integrated thermal cut-off device for battery pack |
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Application publication date: 20160907 |
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