CN104103405A - High-temperature-resistant and high-pressure-resistant sealed transformer for electric car, production equipment and production method - Google Patents
High-temperature-resistant and high-pressure-resistant sealed transformer for electric car, production equipment and production method Download PDFInfo
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- CN104103405A CN104103405A CN201410328231.5A CN201410328231A CN104103405A CN 104103405 A CN104103405 A CN 104103405A CN 201410328231 A CN201410328231 A CN 201410328231A CN 104103405 A CN104103405 A CN 104103405A
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Abstract
The invention discloses a high-temperature-resistant and high-pressure-resistant sealed transformer, production equipment and a production method. The transformer comprises a shell and a magnetic core. A first winding, a second winding and a third winding wind the magnetic core. The shell is provided with a space for placing the magnetic core. The magnetic core is located at the center of the space. A gap between the shell and the magnetic core is filled and sealed with glue. A plurality of pins for being connected with a PCB in an inserted manner are disposed at the bottom of the shell. Due to the fact that the magnetic core is located in the middle of the shell and the gap between the shell and the magnetic core is filled with glue, the magnetic core is less prone to deviation when the magnetic core is assembled to the shell. Due to the fact that the magnetic core is located at the center, the electric performance of the magnetic core can satisfy the requirements of clients after installation. Meanwhile, by the arrangement, the whole transformer is structurally sealed, component internal vibration is avoided, common noise of the transformer is reduced, and good pressure resistance of the whole transformer is achieved.
Description
Technical field
The present invention relates to design of transformer technical field, particularly a kind of used for electric vehicle high temperature high voltage resistant sealed transformer and production equipment and production method.
Background technology
Transformer is the device of conversion alternating voltage, alternating current and impedance, while being connected with alternating current in primary coil, in iron core (or magnetic core), just produces exchange flux, makes to induce in secondary coil voltage (or electric current).
As shown in Figure 1, conventional electric automobile transformer is Open architecture, mainly magnetic core 11, coil 12 and skeleton 13, consists of, and wherein, has the through hole that magnetic core is installed in the middle of skeleton, and side has the groove for winding the line.Winding mechanism is wound in copper cash on skeleton and forms coil, and magnetic core is loaded in the through hole of skeleton.While being connected with alternating current in primary coil, in magnetic core, just produce exchange flux, make to induce voltage (or electric current) in secondary coil, by electromagnetic induction, produce transformer action.
But the transformer of above-mentioned electric automobile is difficult for management and control in process of production, open due to magnetic circuit, affect the electric property of transformer, and volume of transformer is large, after client's installation, can take periphery product space, transformer is installed rear magnetic core and is easily offset, and affects the electric property of transformer.In addition, the electric current that transformer produces declines greatly in the course of the work, loss is large, directly has influence on client's complete machine and uses.
Thereby prior art need to improve.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art part, the object of the present invention is to provide a kind of used for electric vehicle high temperature high voltage resistant sealed transformer, can improve the electric property of transformer.
In order to achieve the above object, the present invention has taked following technical scheme:
A kind of used for electric vehicle high temperature high voltage resistant sealed transformer, it comprises: housing and magnetic core, on described magnetic core, be wound with the first winding, the second winding and the tertiary winding, described housing has for placing the space of described magnetic core, the magnetic core that is wound with the first winding, the second winding and the tertiary winding is positioned at the centre in described space, and the gap between described housing and magnetic core adopts glue to fill sealing; On the bottom surface of described housing, be provided with several for the pin with pcb board grafting; The lead-in wire of the Same Name of Ends of described the first winding is wound in the root of the first pin, the lead-in wire of the different name end of the first winding is wound in the root of the 4th pin, the lead-in wire of the Same Name of Ends of described the second winding is wound in the root of the 8th pin, the lead-in wire of the different name end of the second winding is wound in the root of the 7th pin, and the lead-in wire of the Same Name of Ends of the described tertiary winding is wound in the root of the tenth pin, the lead-in wire of the different name end of the tertiary winding is wound in the root of the 9th pin.
In described used for electric vehicle high temperature high voltage resistant sealed transformer, the front of described housing is provided with for differentiating the lug boss of the installation direction of transformer.
In described used for electric vehicle high temperature high voltage resistant sealed transformer, the bottom surface of described housing is also provided with several for making the strip bulge of transformer installation level.
In described used for electric vehicle high temperature high voltage resistant sealed transformer, on the lead-in wire of the lead-in wire of the Same Name of Ends of described the second winding and different name end, be arranged with insulating sleeve.
In described used for electric vehicle high temperature high voltage resistant sealed transformer, the turn ratio of described the first winding, the second winding and the tertiary winding is: 1:1.2:1.2.
A production equipment for the production of above-mentioned used for electric vehicle high temperature high voltage resistant sealed transformer, is characterized in that, comprising:
Winder, required transformer parameter coiling the first winding, the second winding and tertiary winding on magnetic core when converting according to charging electric vehicle clamper DC/DC;
Invade tin device, for making the lead-in wire of the first winding, the second winding and the tertiary winding and the respective pins of transformer invade tin; Wherein, the lead-in wire of the Same Name of Ends of described the first winding is wound in the root of the first pin, the lead-in wire of the different name end of the first winding is wound in the root of the 4th pin, the lead-in wire of the Same Name of Ends of described the second winding is wound in the root of the 8th pin, the lead-in wire of the different name end of the second winding is wound in the root of the 7th pin, and the lead-in wire of the Same Name of Ends of the described tertiary winding is wound in the root of the tenth pin, the lead-in wire of the different name end of the tertiary winding is wound in the root of the 9th pin;
Positioner, for fixing several housings, described housing is inverted on described positioner, and the magnetic core that makes to be wound with the first winding, the second winding and the tertiary winding is positioned at the centre of housing;
Sealing adhesive device, for adopting glue to fill the clearance seal transformer between housing and magnetic core.
In described production equipment, the turn ratio of described the first winding, the second winding and the tertiary winding is: 1:1.2:1.2.
For the production of a production method for above-mentioned used for electric vehicle high temperature high voltage resistant sealed transformer, it comprises:
A, required transformer parameter coiling the first winding, the second winding and tertiary winding on magnetic core while converting according to charging electric vehicle clamper DC/DC;
B, the pin of transformer is fixed on the bottom surface of housing, and the magnetic core that is wound with the first winding, the second winding and the tertiary winding is positioned over to the centre of housing;
C, employing are invaded tin device the respective pins of the lead-in wire of the first winding, the second winding and the tertiary winding and transformer are invaded to tin processing; Wherein, the lead-in wire of the Same Name of Ends of described the first winding is wound in the root of the first pin, the lead-in wire of the different name end of the first winding is wound in the root of the 4th pin, the lead-in wire of the Same Name of Ends of described the second winding is wound in the root of the 8th pin, the lead-in wire of the different name end of the second winding is wound in the root of the 7th pin, and the lead-in wire of the Same Name of Ends of the described tertiary winding is wound in the root of the tenth pin, the lead-in wire of the different name end of the tertiary winding is wound in the root of the 9th pin;
D, employing sealing adhesive device are filled the clearance seal transformer between housing and magnetic core.
In described production method, between step B and step C, also comprise:
B1, insulating sleeve is enclosed within on the lead-in wire of Same Name of Ends and the lead-in wire of different name end of described the second winding.
In described production method, after step D, described production method also comprises:
The electrical characteristic of E, test transformer.
Compared to prior art, used for electric vehicle high temperature high voltage resistant sealed transformer provided by the invention and production equipment and production method, employing is positioned over magnetic core in the middle of housing, and adopt glue to fill the gap between housing and magnetic core, make to be difficult for skew after housing and magnetic core assembling, and magnetic core is placed in the middle, electric property can meet the requirement after client's installation.Meanwhile, the present invention fills the gap between housing and magnetic core by glue, makes in transformer overall structure closely sealedly, there is no the vibrations of element internal, thereby has reduced the common noise of transformer, simultaneously better to the withstand voltage properties of integral product.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing transformer.
Fig. 2 is the structural representation at a visual angle of used for electric vehicle high temperature high voltage resistant sealed transformer of the present invention.
Fig. 3 is the structural representation at another visual angle of used for electric vehicle high temperature high voltage resistant sealed transformer of the present invention.
Fig. 4 is the winding connection diagram of used for electric vehicle high temperature high voltage resistant sealed transformer of the present invention.
Fig. 5 is the production method flow chart of used for electric vehicle high temperature high voltage resistant sealed transformer of the present invention.
Embodiment
The present invention is for solving the Open architecture of conventional electric car transformer, the poor problem of the adaptation of environment to external world, a kind of used for electric vehicle high temperature high voltage resistant sealed transformer and production equipment and production method are provided, for making object of the present invention, technical scheme and effect clearer, clear and definite, referring to accompanying drawing, developing simultaneously, the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Refer to Fig. 2, Fig. 3 and Fig. 4, the used for electric vehicle high temperature high voltage resistant sealed transformer that the embodiment of the present invention provides comprises housing 10 and magnetic core (not shown), on described magnetic core, be wound with the first winding N1, the second winding N2 and tertiary winding N3, wherein, described magnetic core is a magnet ring, the first winding N1, the second winding N2 and tertiary winding N3 are used copper cash or three layer insulation wire on magnet ring, to carry out coiling, and its turn ratio is: 1:1.2:1.2, thus can reach corresponding performance.In order to reach the correlated performance of the high temperature high voltage resistant of transformer, the insulating barrier of described insulated wire adopts polyurethane, and it is comprised of Polyisocyanate & Polyol, and has good directly solderability at 360 ℃-400 ℃.
In the present embodiment, described housing 10 has for placing the space 101 of described magnetic core, the magnetic core that is wound with the first winding N1, the second winding N2 and tertiary winding N3 is positioned at the centre in described space 101, gap between described magnetic core and housing 10 adopts glue to fill sealing, after glue curing, housing 10 is difficult for skew with magnetic core, and electric property all can meet the requirement after client's installation.
In order to make transformer appearance looks elegant; the color of described glue is identical with the color of housing 10; and carry out joint filling by glue; use in transformer overall structure closely sealed; there is no the vibrations of element internal, thereby reduced the common noise of transformer, the withstand voltage properties of transformer is better simultaneously; in use, the balance of transformer and shockproof noise control have all been played to protective effect.
Please continue to refer to Fig. 2 to Fig. 4, on the bottom surface of described housing 10, be provided with several for the pin 104 with pcb board grafting; The lead-in wire of the Same Name of Ends of described the first winding N1 is wound in the root of the first pin, the lead-in wire of the different name end of the first winding N1 is wound in the root of the 4th pin, the lead-in wire of the Same Name of Ends of described the second winding N2 is wound in the root of the 8th pin, the lead-in wire of the different name end of the second winding N2 is wound in the root of the 7th pin, the lead-in wire of the Same Name of Ends of described tertiary winding N3 is wound in the root of the tenth pin, the lead-in wire of the different name end of tertiary winding N3 is wound in the root of the 9th pin, after glue curing, just transformer and pcb board can be pegged graft.
During concrete enforcement, the bottom surface of described housing 10 is also provided with several for making the strip bulge 102 of transformer installation level, and when transformer is arranged on pcb board, described projection contacts with pcb board, keeps transformer that level is installed.Wherein, described housing 10 adopts wine-colored PBT/PET(plastic cement alloy material) material, the length and width of housing 10 are 22.5mm, be highly 16.5mm (the height 2.5mm that comprises strip bulge), the length of PIN pin (being pin 104) is 3.5mm, and array pitch is 20.32mm, and the 8th distance between pin and the 9th pin be 10.16mm, having met under the condition of transformer related electric feature request, make the size of transformer accomplish minimum, the area that takies pcb board is little.
Please continue to refer to Fig. 2 and Fig. 3, installation for the ease of transformer, in used for electric vehicle high temperature high voltage resistant sealed transformer provided by the invention, in the front of described housing 10, be provided with for differentiating the lug boss 103 of the installation direction of transformer, as shown in Figure 2, described housing 10 is combined by cylinder and cuboid, described lug boss 103 is set on cylinder, when being convenient to differentiate the installation direction of transformer, staff is when installing this transformer, also can directly pinch this lug boss 103 and carry out scheme, operating efficiency is high.And housing 10 to adopt upper stratas be cylinder, the form that lower floor is cuboid, and make cylinder be positioned at the central authorities of cuboid, is convenient to determine the installation site of magnetic core, makes magnetic core be placed in the center of transformer.
Reliability in order to ensure product, the present invention adopts cover on the lead-in wire of Same Name of Ends of described the second winding N2 and the lead-in wire of different name end that insulating sleeve (not marking in figure) is set, after coiling finishes, in the outlet of the 7th pin and the 8th pin, wear a white Teflon sleeve pipe, to strengthen transformer insulated performance; Then manage line, the initial line of each winding and take-up (being the lead-in wire at each winding two ends) are wound around to 2 circles at the root of pin 104, make again lead-in wire wicking two seconds together with pin 104, encapsulate again, herein, insulating sleeve can be according to the structural design of transformer, can be when there is the situation that copper cash intersects or safe distance is excessively near, use insulating sleeve, to guarantee product reliability energy.
Used for electric vehicle high temperature high voltage resistant sealed transformer based on above-mentioned, the invention provides a kind of production equipment for the production of above-mentioned used for electric vehicle high temperature high voltage resistant sealed transformer, and it comprises: Winder, invade tin device, positioner and sealing adhesive device.
Required transformer parameter coiling the first winding, the second winding and tertiary winding on magnetic core when wherein, described Winder is used for converting according to charging electric vehicle clamper DC/DC; Described magnetic core is magnet ring, after coiling with the housing of transformer on cylinder match.According to the parameter request of electric automobile transformer, the turn ratio of described the first winding, the second winding and the tertiary winding is: 1:1.2:1.2.
Its electric parameter is as follows:
Each winding resistance is the i.e. resistance value of the first winding of RCu1() the i.e. resistance value of the second winding of≤300m Ω RCu2()=RCu3(is the resistance value of the tertiary winding)≤300m Ω;
Leakage inductance LS1=1 μ H (second, third short circuit in winding), frequency f=100 kHz;
Turn-to-turn capacitance Ck1-2/3=35pF;
∫UIdt≥250 μVs, Uis,eff = 600 V
∫ UIdt(voltagesecond product) be one of important parameter of transformer, determined pulse transformer volume and loss etc., its unit is v*s (volt * second), equals the product of magnetic core saturation flux density, the number of turn and magnetic core sectional area, due to second, this unit is larger, general long-pending by volt microsecond.Volt microsecond is long-pending is the maximum voltage pulse duration that can bear before magnetic core reaches capacity, surpasses this value, and magnetic core of transformer will be saturated, once saturated, transformer primary side electric current can be very large, and secondary output can become very little and approach zero.Pulse ∫ udt in the pulse period is not that volt microsecond is long-pending, should be the ∫ udt of the positive triggering pulse period in one-period, and this value and frequency relation are not very large.
In finished product transformer, the use of copper coin or insulated wire and storage environment temperature :-40 ° of C...+85 ° of C.The described tin device of invading is for making the lead-in wire of the first winding, the second winding and the tertiary winding and the respective pins of transformer invade tin, prevents from disconnecting and being electrically connected between lead-in wire and pin.Wherein, the lead-in wire of the Same Name of Ends of described the first winding is wound in the root of the first pin, the lead-in wire of the different name end of the first winding is wound in the root of the 4th pin, the lead-in wire of the Same Name of Ends of described the second winding is wound in the root of the 8th pin, the lead-in wire of the different name end of the second winding is wound in the root of the 7th pin, and the lead-in wire of the Same Name of Ends of the described tertiary winding is wound in the root of the tenth pin, the lead-in wire of the different name end of the tertiary winding is wound in the root of the 9th pin.
Described positioner is used for fixing several housings, described housing is inverted on described positioner, and make the magnetic core that is wound with the first winding, the second winding and the tertiary winding be positioned at the centre of housing, even if be wound with among the cylinder that the magnetic core of coil is positioned at housing.
Described sealing adhesive device is for adopting glue to fill the clearance seal transformer between housing and magnetic core, and described sealing adhesive device can adopt automatic dispensing machine, according to pre-set programs, carries out a glue, and when glue, the concentration of gel quantity and glue can be controlled.Wherein, glue adopts the silica gel identical with the color of transformer shell, places and within 12 hours, make it dry voluntarily later in room temperature environment, and the hardness after glue curing is 75REF.
The present invention is also corresponding provides a kind of production method for the production of above-mentioned used for electric vehicle high temperature high voltage resistant sealed transformer, and as shown in Figure 5, it comprises:
S100, required transformer parameter coiling the first winding, the second winding and tertiary winding on magnetic core while converting according to charging electric vehicle clamper DC/DC.
S200, the pin of transformer is fixed on the bottom surface of housing, and the magnetic core that is wound with the first winding, the second winding and the tertiary winding is positioned over to the centre of housing.
S300, employing are invaded tin device the respective pins of the lead-in wire of the first winding, the second winding and the tertiary winding and transformer are invaded to tin processing.Wherein, the lead-in wire of the Same Name of Ends of described the first winding is wound in the root of the first pin, the lead-in wire of the different name end of the first winding is wound in the root of the 4th pin, the lead-in wire of the Same Name of Ends of described the second winding is wound in the root of the 8th pin, the lead-in wire of the different name end of the second winding is wound in the root of the 7th pin, and the lead-in wire of the Same Name of Ends of the described tertiary winding is wound in the root of the tenth pin, the lead-in wire of the different name end of the tertiary winding is wound in the root of the 9th pin.
S400, employing sealing adhesive device are filled the clearance seal transformer between housing and magnetic core.The transformer that the present invention produces is integrated sealed construction, meets the vibration resistance of electric vehicle transformer, the environmental requirement such as heat-resisting, high pressure resistant.
In step S100, adopt coil winding machine to wind the line on magnet ring, the turn ratio of three windings of transformer is: 1:1.2:1.2.
After step S200, described production method also comprises: insulating sleeve is enclosed within on the lead-in wire of Same Name of Ends and the lead-in wire of different name end of described the second winding, to strengthen transformer insulated performance; Manage afterwards line, the initial line of winding and take-up are wound around to 2 circles at the pin root of transformer; Afterwards, the lead-in wire of winding and the pin of transformer are put on tool and carry out wicking, make lead-in wire and corresponding pin wicking conducting slivering, keep good electrical connection.The present invention is when dipping lacquer, and the dipping lacquer time is 2S, and tin liquor temperature is 380 ℃.
In step S400, the transformer shell that is placed with magnetic core is put on positioning unit, adopt automatic adhesive sealing machine to carry out sealing, be put in afterwards and in room temperature environment, carry out dry glue.Then the electrical characteristic of testing transformer then.It comprises voltage-withstand test and inductance value test.
Wherein, when carrying out voltage-withstand test, test event comprises:
The withstand voltage Up of armature winding to other winding, eff=5.0kV, 2s;
The withstand voltage UTA of magnetic core to other winding, eff >=0.6kV;
UE=15.5V；
td=20μs；
fp=1kHz。
Above-mentioned value is by arranging on tester, the withstand voltage of final test transformer.
In test inductance value, proportion f=100 kHz, magnitude of voltage UAC, the voltage tester of eff=100 mV, need test out its inductance value L1 >=400 μ H; Or proportion f=30 kHz, magnitude of voltage UAC, the voltage tester of eff=100 mV, need test out its inductance value L1 >=800 μ H.
In sum, the present invention's employing is positioned over magnetic core in the middle of housing, and adopt glue to fill the gap between housing and magnetic core, make to be difficult for skew after housing and magnetic core assembling, and magnetic core is placed in the middle, the transformer of producing is integrated sealed construction, meets the vibration resistance of electric vehicle transformer, the environmental requirement such as heat-resisting, high pressure resistant.Meanwhile, the present invention fills the gap between housing and magnetic core by glue, makes in transformer overall structure closely sealedly, there is no the vibrations of element internal, thereby has reduced the common noise of transformer, has promoted the performance of transformer.In addition, in transformer production process, at production line, easily operate, the mode of production that is different from traditional transformer, and also lifting to some extent of production efficiency, and volume of transformer is little, the area that takies pcb board is few, can not cause client on machine plate, to take other components and parts space.
Be understandable that, for those of ordinary skills, can be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, and all these changes or replacement all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. a used for electric vehicle high temperature high voltage resistant sealed transformer, it is characterized in that, comprise: housing and magnetic core, on described magnetic core, be wound with the first winding, the second winding and the tertiary winding, described housing has for placing the space of described magnetic core, the magnetic core that is wound with the first winding, the second winding and the tertiary winding is positioned at the centre in described space, and the gap between described housing and magnetic core adopts glue to fill sealing; On the bottom surface of described housing, be provided with several for the pin with pcb board grafting; The lead-in wire of the Same Name of Ends of described the first winding is wound in the root of the first pin, the lead-in wire of the different name end of the first winding is wound in the root of the 4th pin, the lead-in wire of the Same Name of Ends of described the second winding is wound in the root of the 8th pin, the lead-in wire of the different name end of the second winding is wound in the root of the 7th pin, and the lead-in wire of the Same Name of Ends of the described tertiary winding is wound in the root of the tenth pin, the lead-in wire of the different name end of the tertiary winding is wound in the root of the 9th pin.
2. used for electric vehicle high temperature high voltage resistant sealed transformer according to claim 1, is characterized in that, the front of described housing is provided with for differentiating the lug boss of the installation direction of transformer.
3. used for electric vehicle high temperature high voltage resistant sealed transformer according to claim 1, is characterized in that, the bottom surface of described housing is also provided with several for making the strip bulge of transformer installation level.
4. used for electric vehicle high temperature high voltage resistant sealed transformer according to claim 1, is characterized in that, on the lead-in wire of the lead-in wire of the Same Name of Ends of described the second winding and different name end, is arranged with insulating sleeve.
5. used for electric vehicle high temperature high voltage resistant sealed transformer according to claim 1, is characterized in that, the turn ratio of described the first winding, the second winding and the tertiary winding is: 1:1.2:1.2.
6. for the production of a production equipment for used for electric vehicle high temperature high voltage resistant sealed transformer as claimed in claim 1, it is characterized in that, comprising:
Winder, required transformer parameter coiling the first winding, the second winding and tertiary winding on magnetic core when converting according to charging electric vehicle clamper DC/DC;
Invade tin device, for making the lead-in wire of the first winding, the second winding and the tertiary winding and the respective pins of transformer invade tin; Wherein, the lead-in wire of the Same Name of Ends of described the first winding is wound in the root of the first pin, the lead-in wire of the different name end of the first winding is wound in the root of the 4th pin, the lead-in wire of the Same Name of Ends of described the second winding is wound in the root of the 8th pin, the lead-in wire of the different name end of the second winding is wound in the root of the 7th pin, and the lead-in wire of the Same Name of Ends of the described tertiary winding is wound in the root of the tenth pin, the lead-in wire of the different name end of the tertiary winding is wound in the root of the 9th pin;
Positioner, for fixing several housings, described housing is inverted on described positioner, and the magnetic core that makes to be wound with the first winding, the second winding and the tertiary winding is positioned at the centre of housing;
Sealing adhesive device, for adopting glue to fill the clearance seal transformer between housing and magnetic core.
7. production equipment according to claim 6, is characterized in that, the turn ratio of described the first winding, the second winding and the tertiary winding is: 1:1.2:1.2.
8. for the production of a production method for used for electric vehicle high temperature high voltage resistant sealed transformer as claimed in claim 1, it is characterized in that, comprising:
A, required transformer parameter coiling the first winding, the second winding and tertiary winding on magnetic core while converting according to charging electric vehicle clamper DC/DC;
B, the pin of transformer is fixed on the bottom surface of housing, and the magnetic core that is wound with the first winding, the second winding and the tertiary winding is positioned over to the centre of housing;
C, employing are invaded tin device the respective pins of the lead-in wire of the first winding, the second winding and the tertiary winding and transformer are invaded to tin processing; Wherein, the lead-in wire of the Same Name of Ends of described the first winding is wound in the root of the first pin, the lead-in wire of the different name end of the first winding is wound in the root of the 4th pin, the lead-in wire of the Same Name of Ends of described the second winding is wound in the root of the 8th pin, the lead-in wire of the different name end of the second winding is wound in the root of the 7th pin, and the lead-in wire of the Same Name of Ends of the described tertiary winding is wound in the root of the tenth pin, the lead-in wire of the different name end of the tertiary winding is wound in the root of the 9th pin;
D, employing sealing adhesive device are filled the clearance seal transformer between housing and magnetic core.
9. production method according to claim 8, is characterized in that, between step B and step C, also comprises:
B1, insulating sleeve is enclosed within on the lead-in wire of Same Name of Ends and the lead-in wire of different name end of described the second winding.
10. production method according to claim 8, is characterized in that, after step D, described production method also comprises:
The electrical characteristic of E, test transformer.
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| CN201410328231.5A CN104103405A (en) | 2014-07-10 | 2014-07-10 | High-temperature-resistant and high-pressure-resistant sealed transformer for electric car, production equipment and production method |
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| CN201410328231.5A CN104103405A (en) | 2014-07-10 | 2014-07-10 | High-temperature-resistant and high-pressure-resistant sealed transformer for electric car, production equipment and production method |
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| CN108181753A (en) * | 2018-02-02 | 2018-06-19 | 惠州市华星光电技术有限公司 | LCD modules and liquid crystal display |
| CN108227304A (en) * | 2018-01-18 | 2018-06-29 | 广东欧珀移动通信有限公司 | Display screen component and electronic equipment |
| CN110942905A (en) * | 2019-11-14 | 2020-03-31 | 深圳顺络电子股份有限公司 | Inductor and preparation method thereof |
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| CN108227304A (en) * | 2018-01-18 | 2018-06-29 | 广东欧珀移动通信有限公司 | Display screen component and electronic equipment |
| CN108181753A (en) * | 2018-02-02 | 2018-06-19 | 惠州市华星光电技术有限公司 | LCD modules and liquid crystal display |
| CN110942905A (en) * | 2019-11-14 | 2020-03-31 | 深圳顺络电子股份有限公司 | Inductor and preparation method thereof |
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Application publication date: 20141015 |