CN103903914B - Electric automobile total power switch - Google Patents
Electric automobile total power switch Download PDFInfo
- Publication number
- CN103903914B CN103903914B CN201210590915.3A CN201210590915A CN103903914B CN 103903914 B CN103903914 B CN 103903914B CN 201210590915 A CN201210590915 A CN 201210590915A CN 103903914 B CN103903914 B CN 103903914B
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- contact
- fixed
- coil
- coil rack
- installation portion
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention discloses a kind of electric automobile total power switch, movable contact spring has been arranged side by side N sheet, and mutually insulated; The equal one end insulation of described every sheet movable contact spring is fixed on armature, and the other end stretches into the contact installation portion of coil rack and is fixed with two moving contacts; Described static contact spring piece has been arranged side by side N+1 sheet, and mutually insulated; Described N+1 sheet static contact spring piece is all fixed on the inner bottom part of the contact installation portion of coil rack, and respectively on the static contact spring piece being positioned at the installation portion both sides, contact of coil rack fixes a fixed contact, all the other static contact spring pieces is respectively arranged two fixed contacts; Described fixed contact and the upper and lower one_to_one corresponding of moving contact; Described N is natural number.The present invention adopts the structure of the two moving contact of many groups and two fixed contact, and contact gap can increase N doubly, and switch opens speed too increases N doubly, efficiently solves a difficult problem for arc extinguishing, meets the utilization of electric automobile total power switch in high voltage, high current loads.<!--1-->
Description
Technical field
The present invention relates to a kind of electric automobile total power switch.
Background technology
Electric automobile total power switch is in larger input load situation, and as direct voltage >=50V, electric current >=50A load, during the complete total power switch powered-down of vehicle launch, there will be the blue electric arc that can not extinguish, make contact burn inefficacy between dynamic and static contact.Arc-suppressing method that current each producer adopts is additional enhancing arc-suppression circuit, normally absorbs electric arc at the two ends shunt capacitance of contact.But additional arc-suppression circuit cost is high, and reliability is lower, when electric current reaches certain value, there will be a large amount of back-emfs, electric capacity cannot absorb the huge electric arc formed by back-emf, and electric automobile total power switch still can lose efficacy.Simultaneously when input load is larger, dynamic and static contact and static contact spring piece can produce too high temperature, and coil rack is heated and softening transform.
In sum, existing electric automobile total power switch cannot use in larger input load situation, needs to design a kind of electric automobile total power switch that can use in larger input load situation.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of electric automobile total power switch that can use under the load of high voltage, high electric current.
In order to solve the problems of the technologies described above, technical scheme provided by the present invention is: a kind of electric automobile total power switch, comprises yoke, coil rack, coil, iron core, armature, extension spring, movable contact spring, moving contact, supporting spring, static contact spring piece, fixed contact, brush wire and insulating material; The vertical portion that described yoke comprises horizontally disposed horizontal part and vertically arranges; Described coil rack is fixed on the horizontal part of yoke, and coil rack comprises coil installation portion and contact installation portion; Described coil winding is on the coil installation portion of coil rack, and two leading-out terminals of coil are fixed on the coil installation portion of coil rack; Described iron core is fixed on the center of the coil installation portion of coil rack; The middle part of described armature supports by the vertical portion of yoke, and its two ends are fixedly connected with one end of extension spring and one end of movable contact spring respectively; One end that described armature and movable contact spring are fixed is positioned at above iron core; The other end of described extension spring is fixedly connected with the horizontal part of yoke; Described movable contact spring has been arranged side by side N sheet, and mutually insulated; The equal one end insulation of movable contact spring described in every sheet is fixed on armature, and the other end stretches into the contact installation portion of coil rack and is fixed with two moving contacts; Described static contact spring piece has been arranged side by side N+1 sheet, and mutually insulated; Described N+1 sheet static contact spring piece is all fixed on the inner bottom part of the contact installation portion of coil rack, and respectively on the static contact spring piece being positioned at the installation portion both sides, contact of coil rack fixes a fixed contact, all the other static contact spring pieces is respectively arranged two fixed contacts; Described fixed contact and the upper and lower one_to_one corresponding of moving contact; Described insulating material is used for insulating between each conductive component; Described brush wire is provided with two, and two brush wires are fixedly connected with the static contact spring piece of the installation portion both sides, contact being positioned at coil rack respectively; Described N is natural number.
A kind of electric automobile total power switch, is characterized in that: also comprise supporting spring; Described supporting spring is fixed on the inner top of the contact installation portion of coil rack, and is positioned at above moving contact.
Gap sum >=4.2mm between described moving contact and fixed contact.
Contact >=the 1.5N of described moving contact and fixed contact.
Described coil rack is made up of the plastic material of high temperature resistant >=150 DEG C.
Temperature≤150 DEG C during described movable contact spring conduction.
Temperature≤150 DEG C during described static contact spring piece conduction.
Power consumption≤the 5.5W of described coil.
Described two brush wires adopt the flexible cord of copper braiding.
Described insulating material adopts thermoplastics.
After have employed technique scheme, the present invention has following beneficial effect: (1) the present invention adopts the structure of the two moving contact of many groups and two fixed contact, wherein often the two moving contact of group does electric bridge and makes often to organize two fixed contact conducting, like this when magnetic gap is constant, often the two moving contact of group and two fixed contact all can make contact gap can increase by 1 times, therefore when using the two moving contact of N group and two fixed contact, contact gap can increase N doubly, switch opens speed too increases N doubly, efficiently solve a difficult problem for arc extinguishing, enable electric automobile total power switch at high voltage, fortune under the load of high electric current uses.
(2) supporting spring of the present invention is fixed on the inner top of the contact installation portion of coil rack, and one_to_one corresponding upper and lower with movable contact spring, supporting spring can isolate moving contact and coil rack, loses efficacy after preventing moving contact from producing high temperature with coil rack generation melting adhesion.
(3) the gap sum >=4.2mm between moving contact of the present invention and fixed contact, this gap can better arc extinguishing.
(4) gap between armature of the present invention and iron core: the gap L EssT.LTssT.LT 1mm between moving contact and fixed contact, this structure makes when same contacts gap, need the magnetic flux of work less, the power therefore needing coil to consume is just lower.
(5) contact >=1.5N of moving contact of the present invention and fixed contact, the contact between contact reduces the contact resistance of contact after increasing, reduce the temperature rise of contact, prevent coil rack to be out of shape further.
(6) coil rack of the present invention is made up of the plastic material of high temperature resistant >=150 DEG C, effectively prevents coil rack to be out of shape.
(7) temperature≤150 DEG C during movable contact spring conduction of the present invention, prevent coil rack to be out of shape further.
(8) temperature≤150 DEG C during static contact spring piece conduction of the present invention, this structure when satisfied conduction requires, can reduce temperature rise, thus prevents coil rack to be out of shape further further.
(9) power consumption≤5.5W of coil of the present invention, only has the half of existing product coil power dissipation, greatly reduces the consumption of coil, greatly reduces weight of the present invention.
(10) two brush wires of the present invention adopt the flexible cord of copper braiding, can be formed and be flexible coupling when this structure makes the present invention install connection, convenient installation.
(11) insulating material of the present invention adopts thermoplastics, and thermoplastics not easily fragmentation, shock resistance and anti-vibration ability is good.
(12) of the present invention lightweight, be about 132 grams, consumptive material is few, cost is low, reliable operation, easy to use various, both met the use of the mode of connection, can meet again printed circuit board and use, therefore appearance of the present invention can replace the widely used contactor of current electric automobiles and relay.
Accompanying drawing explanation
In order to make content of the present invention more easily be clearly understood, below according to specific embodiment also by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is that the present invention adopts one group of two moving contact and structural representation during two fixed contact.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the A-A cutaway view of Fig. 2.
Fig. 4 is the B-B cutaway view of Fig. 2.
Label in accompanying drawing is:
Yoke 1, horizontal part 1-1, vertical portion 1-2, coil rack 2, coil installation portion 2-1, contact installation portion 2-2, coil 3, leading-out terminal 3-1, iron core 4, armature 5, extension spring 6, movable contact spring 7, moving contact 8, supporting spring 9, static contact spring piece 10, fixed contact 11, brush wire 12.
Embodiment
(embodiment 1)
The electric automobile total power switch of the present embodiment, comprises yoke 1, coil rack 2, coil 3, iron core 4, armature 5, extension spring 6, movable contact spring 7, moving contact 8, supporting spring 9, static contact spring piece 10, fixed contact 11, brush wire 12 and insulating material.
The vertical portion 1-2 that yoke 1 comprises horizontally disposed horizontal part 1-1 and vertically arranges.Coil rack 2 is fixed on the horizontal part 1-1 of yoke 1, and coil rack 2 comprises coil installation portion 2-1 and contact installation portion 2-2.Coil 3 is wrapped on the coil installation portion 2-1 of coil rack 2, and two leading-out terminal 3-1 of coil 3 are fixed on the coil installation portion 2-1 of coil rack 2.Power consumption≤the 5.5W of coil 3.Iron core 4 is fixed on the center of the coil installation portion 2-1 of coil rack 2.The middle part of armature 5 supports by the vertical portion 1-2 of yoke 1, and its two ends are fixedly connected with one end of extension spring 6 and one end of movable contact spring 7 respectively.One end that armature 5 is fixed with movable contact spring 7 is positioned at above iron core 4.The other end of extension spring 6 is fixedly connected with the horizontal part 1-1 of yoke 1.Movable contact spring 7 has been arranged side by side N sheet, and mutually insulated.Every sheet movable contact spring 7 all one end insulation is fixed on armature 5, and the other end stretches into the contact installation portion 2-2 of coil rack 2 and is fixed with two moving contacts 8.Supporting spring is fixed on the inner top of the contact installation portion 2-2 of coil rack 2, and is positioned at above moving contact 8.Static contact spring piece 10 has been arranged side by side N+1 sheet, and mutually insulated.N+1 sheet static contact spring piece 10 is all fixed on the inner bottom part of the contact installation portion 2-2 of coil rack 2, and respectively on the static contact spring piece 10 being positioned at the installation portion 2-2 both sides, contact of coil rack 2 fixes a fixed contact 11, all the other static contact spring pieces 10 is respectively arranged two fixed contacts 11.Fixed contact 11 and moving contact about 8 one_to_one corresponding.Gap sum >=4.2mm between moving contact 8 and fixed contact 11.Contact >=the 1.5N of moving contact 8 and fixed contact 11.Insulating material is used for insulating between each conductive component.Brush wire 12 is provided with two, and two brush wires 12 are fixedly connected with the static contact spring piece 10 of the installation portion 2-2 both sides, contact being positioned at coil rack 2 respectively.The flexible cord that two brush wires 12 adopt copper to weave.N is natural number.
For preventing coil rack temperature distortion, coil rack 2 adopts the plastic material of high temperature resistant >=150 DEG C to make, and such as adopts nylon PA66-G30 material.
In order to prevent coil rack temperature distortion further, temperature≤150 DEG C when movable contact spring 7 conducts electricity.Conductive resistance is reduced as by the thickness increasing movable contact spring 7, thus temperature≤150 DEG C when ensureing movable contact spring conduction.
In order to prevent coil rack temperature distortion further, temperature≤150 DEG C when static contact spring piece 10 conducts electricity.Such as static contact spring piece 10 is made up of red copper, and increases thickness, increases the sectional area of two brush wires 12 simultaneously, thus temperature≤150 DEG C when guarantee static contact spring piece 10 conducts electricity.
The operation principle of the electric automobile total power switch of the present embodiment is: after coil 3 is energized, coil 3 center produces magnetic flux, and magnetic flux is by the circulation of following order: iron core 4 → yoke 1 → armature 5 → iron core 4 (or: iron core 4 → armature 5 → yoke 1 → iron core 4).Because there being magnetic flux to flow through in iron core 4, yoke 1, armature 5, because having air gap between armature 5 and iron core 4, because air reluctance is large more than metal magnetic resistance, so different magnetic poles can be formed on armature 5 and iron core 4, and making both produce suction, the resistance allowing armature 5 overcome extension spring 6 moves to iron core 4 direction.Armature 5 moves and drives moving contact 8 to move to fixed contact 11, makes moving contact 8 contact closed action with fixed contact 11.After coil 3 turn-off current, magnetic flux disappears, and the suction between armature 5 and iron core 4 disappears, and extension spring 6 pulls armature 5 away from iron core 4, and armature 5 drives moving contact 8 to leave away from fixed contact 11, completes disconnection action.
The electric automobile total power switch of the present embodiment adopts the structure of the two moving contact 8 of many groups and two fixed contact 11, and wherein often the two moving contact 8 of group does electric bridge and makes often to organize two fixed contact 11 conducting.Like this when magnetic gap is constant, often the two moving contact 8 of group and two fixed contact 11 all can make contact gap can increase by 1 times.When using the two moving contact 8 of N group and two fixed contact 11, contact gap can increase N doubly, and switch opens speed too increases N doubly, thus just can be suitable for larger input load.
See Fig. 1 to Fig. 4, for the structure of one group of two moving contact 8 with two fixed contact 11, i.e. N=1.Wherein two moving contact 8 does electric bridge and makes two fixed contact 11 conducting.Such magnetic gap is constant, and contact gap can increase by 1 times, and switch opens speed too increases 1 times, advantageously in arc extinguishing.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. electric automobile total power switch, is characterized in that: comprise yoke (1), coil rack (2), coil (3), iron core (4), armature (5), extension spring (6), movable contact spring (7), moving contact (8), static contact spring piece (10), fixed contact (11), brush wire (12) and insulating material; The vertical portion (1-2) that described yoke (1) comprises horizontally disposed horizontal part (1-1) and vertically arranges; Described coil rack (2) is fixed on the horizontal part (1-1) of yoke (1), and coil rack (2) comprises coil installation portion (2-1) and contact installation portion (2-2); Described coil (3) is wrapped on the coil installation portion (2-1) of coil rack (2), and two leading-out terminals (3-1) of coil (3) are fixed on the coil installation portion (2-1) of coil rack (2); Described iron core (4) is fixed on the center of the coil installation portion (2-1) of coil rack (2); The middle part of described armature (5) supports by the vertical portion (1-2) of yoke (1), and its two ends are fixedly connected with one end of extension spring (6) and one end of movable contact spring (7) respectively; One end that described armature (5) and movable contact spring (7) are fixed is positioned at iron core (4) top; The other end of described extension spring (6) is fixedly connected with the horizontal part (1-1) of yoke (1); Described movable contact spring (7) has been arranged side by side N sheet, and mutually insulated; Movable contact spring (7) described in every sheet all one end insulation is fixed on armature (5), and the other end stretches into the contact installation portion (2-2) of coil rack (2) and is fixed with two moving contacts (8); Described static contact spring piece (10) has been arranged side by side N+1 sheet, and mutually insulated; Described N+1 sheet static contact spring piece (10) is all fixed on the inner bottom part of the contact installation portion (2-2) of coil rack (2), and the static contact spring piece (10) being positioned at contact installation portion (2-2) both sides of coil rack (2) is above each fixes a fixed contact (11), all the other static contact spring pieces (10) are above each arranges two fixed contacts (11); Described fixed contact (11) and moving contact (8) one_to_one corresponding up and down; Described insulating material is used for insulating between each conductive component; Described brush wire (12) is provided with two, and two brush wires (12) are fixedly connected with the static contact spring piece (10) of contact installation portion (2-2) both sides being positioned at coil rack (2) respectively; Described N is natural number.
2. electric automobile total power switch according to claim 1, is characterized in that: also comprise supporting spring (9); Described supporting spring (9) is fixed on the inner top of the contact installation portion (2-2) of coil rack (2), and is positioned at moving contact (8) top.
3. electric automobile total power switch according to claim 1, is characterized in that: the gap sum >=4.2mm between described moving contact (8) and fixed contact (11).
4. electric automobile total power switch according to claim 1, is characterized in that: the contact >=1.5N of described moving contact (8) and fixed contact (11).
5. electric automobile total power switch according to claim 1, is characterized in that: described coil rack (2) is made up of the plastic material of high temperature resistant >=150 DEG C.
6. electric automobile total power switch according to claim 1, is characterized in that: temperature≤150 DEG C during described movable contact spring (7) conduction.
7. electric automobile total power switch according to claim 1, is characterized in that: temperature≤150 DEG C during described static contact spring piece (10) conduction.
8. electric automobile total power switch according to claim 1, is characterized in that: the power consumption≤5.5W of described coil (3).
9. electric automobile total power switch according to claim 1, is characterized in that: described two brush wires (12) adopt the flexible cord of copper braiding.
10. electric automobile total power switch according to claim 1, is characterized in that: described insulating material adopts thermoplastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210590915.3A CN103903914B (en) | 2012-12-29 | 2012-12-29 | Electric automobile total power switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210590915.3A CN103903914B (en) | 2012-12-29 | 2012-12-29 | Electric automobile total power switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103903914A CN103903914A (en) | 2014-07-02 |
| CN103903914B true CN103903914B (en) | 2016-04-06 |
Family
ID=50995183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210590915.3A Expired - Fee Related CN103903914B (en) | 2012-12-29 | 2012-12-29 | Electric automobile total power switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103903914B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201514903U (en) * | 2009-10-23 | 2010-06-23 | 贵州天义汽车电器有限公司 | Limiting type double-breakpoint electromagnetic relay |
| CN102693876A (en) * | 2011-03-24 | 2012-09-26 | 崔万恒 | Direct-current high-voltage relay |
| CN202473773U (en) * | 2012-03-28 | 2012-10-03 | 湖北天运汽车电器系统有限公司 | Automobile relay |
| CN203070976U (en) * | 2012-12-29 | 2013-07-17 | 常州市博迈电子有限公司 | Electric vehicle main power switch |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH698492B1 (en) * | 2006-03-20 | 2009-08-31 | Elesta Relays Gmbh | Relay. |
-
2012
- 2012-12-29 CN CN201210590915.3A patent/CN103903914B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201514903U (en) * | 2009-10-23 | 2010-06-23 | 贵州天义汽车电器有限公司 | Limiting type double-breakpoint electromagnetic relay |
| CN102693876A (en) * | 2011-03-24 | 2012-09-26 | 崔万恒 | Direct-current high-voltage relay |
| CN202473773U (en) * | 2012-03-28 | 2012-10-03 | 湖北天运汽车电器系统有限公司 | Automobile relay |
| CN203070976U (en) * | 2012-12-29 | 2013-07-17 | 常州市博迈电子有限公司 | Electric vehicle main power switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103903914A (en) | 2014-07-02 |
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Granted publication date: 20160406 Termination date: 20201229 |