CN104659878A - Electric vehicle charger - Google Patents
Electric vehicle charger Download PDFInfo
- Publication number
- CN104659878A CN104659878A CN201510073285.6A CN201510073285A CN104659878A CN 104659878 A CN104659878 A CN 104659878A CN 201510073285 A CN201510073285 A CN 201510073285A CN 104659878 A CN104659878 A CN 104659878A
- Authority
- CN
- China
- Prior art keywords
- upper shell
- lower house
- electric car
- car charger
- pcb board
- 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.)
- Granted
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Classifications
-
- 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
- H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/209—Heat transfer by conduction from internal heat source to heat radiating structure
Abstract
The invention discloses an electric vehicle charger and belongs to the field of electric vehicles. The electric vehicle charger comprises an upper housing, a PCB (printed circuit board) d, a lower housing, heat radiation teeth and a cover plate, wherein the upper housing is an open box body, a closed-loop sealing groove is formed in the bottom surface of the side wall relative to the circumference of the side wall, a sealing strip is arranged in the sealing groove, the PCB is mounted in a cavity of the upper housing, the lower housing and the upper housing are buckled to form a housing of the charger, the heat radiation teeth are fixedly arranged on the outer surface of the top, and the cover plate covers the heat radiation teeth. According to the electric vehicle charger disclosed by the invention, the closed-loop sealing groove is formed in the bottom surface of the side wall of the upper housing and the structure of the sealing strip is arranged in the sealing groove, so that the dust-proof and sealing effects are realized, the protection grade of the electric vehicle charger can meet the protection requirements of IPX7, the reliable use of the electric vehicle charger is ensured and the high protection demands of an electric vehicle are met.
Description
Technical field
The present invention relates to electric automobile field, particularly a kind of electric car charger.
Background technology
At present, what face international community's traditional energy is close to exhaustion, and the application of electric automobile develops rapidly.Employing electric automobile effectively can reduce the dependence to petroleum resources, meets low-carbon (LC) social development requirement.As everyone knows, storage battery is the energy source of electric automobile, and electric car charger is storage battery realizes the indispensable instrument of charging process.
Electric car charger adopts power electronics semiconductor device, is galvanic a kind of static ac dc converter device by voltage and the changeless convert alternating current of frequency.Most of electric car chargers are in the market by shell and the pcb board (English: Printed Circuit Board being fixed on enclosure, Chinese: printed circuit board (PCB)) form, shell is made up of housing and upper cover, is screwed between housing and upper cover.Electric car charger is arranged on automobile front chamber region usually.
Realizing in process of the present invention, inventor finds that prior art at least exists following problem:
Because automobile front chamber district dust is severe with chance water condition, degree of protection must meet IPX7 height requirement of shelter, the reliable use of guarantee charger, if degree of protection is inadequate, electric car charger housing just may cause transformer short-circuit once chance water, the lighter has damaged the normal use of electric car charger, and severe one can the hidden danger such as fire hazard.And be screwed between existing electric car charger housing and upper cover, sealing effectiveness is bad, waterproof and dust-proof grade low, electric automobile high protection requirements can not be met.
Summary of the invention
Bad in order to solve the sealing effectiveness that electric car charger in prior art exists, waterproof and dust-proof grade low, the problem of electric automobile high protection requirements can not be met, embodiments provide a kind of electric car charger.Described technical scheme is as follows:
A kind of electric car charger, described electric car charger comprises upper shell, pcb board, lower house, radiation tooth and cover plate,
Described upper shell is opening box body, and described upper shell inside is cavity, described upper shell comprises top and sidewall, described sidewall encloses and in described top surrounding, described sidewall bottom outwards extends as upper shell connecting portion in its border relatively, relatively described sidewall border, described sidewall bottom surface is provided with the seal groove of closed loop, is provided with band in described seal groove
Described pcb board is arranged in described upper shell cavity, and described pcb board is fixedly connected with described top,
Described lower house is tabular, described lower house and described upper shell fasten and form charger case, the corresponding described pcb board position of described lower house buckling surface is provided with groove, the corresponding described upper shell connecting portion of described lower house has installed described lower house connecting portion, be fixedly connected with by described upper shell connecting portion and described lower house connecting portion between described lower house with described upper shell, sealed by described band between described lower house and described upper shell
Described radiation tooth is fixedly installed on described outer surface of cupular part, and described pcb board is dispelled the heat by described radiation tooth,
Described cover plate covers above described radiation tooth, and described cover plate is fixedly connected with described upper shell.
Alternatively, described band cross section is that middle wide both sides are narrow.
Alternatively, described band adopts closed pore silica gel or porous silica gel to make.
Further, the corresponding main heater members position of described pcb board of described lower house is provided with boss, is provided with heat-conducting pad between described boss and the main heater members of described pcb board.
Further, in the non-buckling surface of described lower house, corresponding described lug boss position is provided with hollow structure.
Alternatively, described hollow structure adopts four tetragonal body hollow structures.
Further, described electric car charger comprises fan, and described fan is arranged in described radiation tooth, by described fan auxiliary heat dissipation.
Further, described upper shell sidewall is provided with circular groove, is fixed the device of described electric car charger by described circular groove.
Alternatively, described lower house connecting portion comprises fixing point connecting hole, and described fixing point connecting hole is arranged on fixing point boss, and described fixing point boss and described lower house junction are provided with fixing point groove.
Alternatively, described upper shell, described lower house and described radiation tooth all adopt die casting aluminium to make, and the outer surface of described upper shell, described lower house and described radiation tooth all does black anodizing process.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is:
The present invention is by arranging the seal groove of closed loop in the sidewall bottom surface of upper shell, and in described seal groove, be provided with the structure of band, play dust-proof and sealing function, make degree of protection of the present invention meet IPX7 requirement of shelter, ensure reliable use of the present invention, meet electric automobile high protection requirements.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the electric car charger overall structure stereogram that the embodiment of the present invention provides;
Fig. 2 is the upward view of upper shell shown in Fig. 1;
Fig. 3 is the lower house stereogram that the embodiment of the present invention provides;
Fig. 4 is the A direction view of Fig. 3;
Fig. 5 is the band stereogram that the embodiment of the present invention provides.
In figure, each symbol represents that implication is as follows:
1 upper shell,
11 tops, 12 sidewalls, 13 upper shell connecting portions, 14 seal grooves, 15 bands, 16 circular grooves, 17 detents,
2 lower houses,
21 grooves, 22 lower house connecting portions, 23 boss, 231 inductance boss, 232 transformer boss, 24 positioning convex, 25 fixing point boss, 26 fixing point grooves, 27 hollow structures, 28 cross connecting walls, 29 fixing point connecting holes,
3PCB plate,
31 electrochemical capacitors, 32IGBT, 33 conducting strips, 34 transformers, 35 inductance,
4 radiation tooths,
5 cover plates,
6 mounting screws,
7 fans,
8 holding screws,
9 heat-conducting pads.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
As shown in Figure 1, also can see Fig. 2, the present embodiment take Fig. 1 as main being illustrated, and the invention provides a kind of electric car charger, described electric car charger comprises upper shell 1, pcb board 3 (see Fig. 2), lower house 2, radiation tooth 4 and cover plate 5
As shown in Figure 1, described upper shell 1 is opening box body, and described upper shell 1 inside is cavity, described upper shell 1 comprises top 11 and sidewall 12, described sidewall 12 encloses and in described top 11 surrounding, bottom described sidewall 12, its border relative is outwards extended as upper shell connecting portion 13, and relatively described sidewall 12 border, described sidewall 12 bottom surface is provided with the seal groove 14 (see Fig. 2) of closed loop, band 15 (see Fig. 2) is provided with in described seal groove 14 (see Fig. 2)
As shown in Figure 2, described pcb board 3 is arranged in described upper shell 1 cavity, and described pcb board 3 is fixedly connected with described top 11 (see Fig. 1),
As shown in Figure 3, described lower house 2 is tabular, described lower house 2 fastens with described upper shell 1 (see Fig. 2) and forms charger case, corresponding described pcb board 3 (see Fig. 2) position of described lower house 2 buckling surface is provided with groove 21, corresponding described upper shell connecting portion 13 (see Fig. 2) position of described lower house 2 is provided with described lower house connecting portion 22, be fixedly connected with by described upper shell connecting portion 13 (see Fig. 2) and described lower house connecting portion 22 between described lower house 2 with described upper shell 1 (see Fig. 2), sealed by described band 15 (see Fig. 2) between described lower house 2 and described upper shell 1 (see Fig. 2),
As shown in Figure 1, described radiation tooth 4 is fixedly installed on described top 11 outer surface, and described pcb board 3 is dispelled the heat by described radiation tooth 4,
As shown in Figure 1, described cover plate 5 covers above described radiation tooth 4, and described cover plate 5 is fixedly connected with described upper shell 1.Prevent foreign matter from falling into the heat dissipation channel of radiation tooth 4 formation by described cover plate 5.
Wherein, so-called top, the end are relative concept, and the present embodiment is Fig. 1 of seeing with reader for benchmark is as the criterion at the top of definition, the end.
Shown in Figure 1, all clamping screws on electric car charger of the present invention adopt the moment of torsion of 6N.m evenly to lock, by described electric automobile charger shell (the lower fan 7 of dismounting, all outside connector good seals) sink to the water tank filling water, according to IPX7 test request, sink under the water described electric automobile charger shell 1 meter of, after keeping 30 minutes, after the described electric automobile charger shell pull-out water surface, unclamp clamping screw, open upper shell 1 and observe described electric automobile charger shell (i.e. upper shell 1 and lower house 2) inner anhydrous mark, illustrate that the hermetically-sealed construction on electric car charger of the present invention meets IPX7 requirement completely.
As shown in Figure 2, the present invention is by arranging the seal groove 14 of closed loop in sidewall 12 bottom surface of upper shell 1, and in described seal groove 14, be provided with the structure of band 15, play dust-proof and sealing function, degree of protection of the present invention is made to meet IPX7 requirement of shelter, ensure reliable use of the present invention, meet electric automobile high protection requirements.
Particularly, as shown in Figure 2, in the present embodiment, pcb board 3 is fixedly connected with upper shell 1 through holding screw 8.
Particularly, as shown in Figure 1, in the present embodiment, radiation tooth 4 is multiple, and the parallel superposition of multiple radiation tooth 4 is arranged, so that ventilation and heat.
Particularly, as shown in Figure 5, in the present embodiment, described band 15 cross section is that middle wide both sides are narrow.By said structure, further enhanced leaktightness effect.
More specifically, as shown in Figure 5, in the present embodiment, described band 15 adopts rubber seal tape to make, and more specifically, in the present embodiment, described band 15 adopts closed pore silica gel or porous silica gel to make.Therefore band 15 has stronger sealing property, high resilience energy, the features such as serviceability temperature wide scope (-50 DEG C-260 DEG C), greatly improve degree of protection.
Particularly, as shown in Figure 2, in the present embodiment, the main heater members position of the corresponding described pcb board 3 of described lower house 2 is provided with boss 23, is provided with heat-conducting pad 9 between described boss 23 and the main heater members of described pcb board 3.More specifically, heat-conducting pad 9 is pasted onto on boss 23.The present embodiment, by arranging boss 23 in lower house 2, boss 23 is established the structure of heat-conducting pad 9, do not make pcb board 3 mainly realize between heater members and lower house 2 being flexible coupling, and the heat that the main heater members of pcb board 3 is produced pass to lower house 2 by heat-conducting pad 9 and carry out quick heat radiating.In addition, the heat that the main heater members of pcb board 3 produces also passes to upper shell 1 through holding screw 8, is outwards dispelled the heat, thus achieves bidirectional cooling, ensure the temperature difference with other thermals source by radiation tooth 4, and heat radiation evenly.
More specifically, as shown in Figure 2, in the present embodiment, the main heater members of pcb board 3 comprises inductance 35, transformer 34 and electrochemical capacitor 31, and they are all fixed on pcb board 3 by pin.Correspondingly, in lower house 2, boss 23 has inductance boss 231 and transformer boss 232.More specifically, heat-conducting pad 9 is heat conductive silica gel pad.By said structure, ensure heat radiation fast effectively.
Particularly, as shown in Figure 4, in the present embodiment, in the non-buckling surface of described lower house 2, corresponding described boss 23 position is provided with hollow structure 27.By said structure, weight reduction.
More specifically, as shown in Figure 4, in the present embodiment, described hollow structure 27 adopts four tetragonal body hollow structures 27.There is cross connecting wall 28 between four tetragonal body hollow structures 27, by cross connecting wall 28 increasing heat radiation area, accelerate heat radiation.
Particularly, as shown in Figure 1, in the present embodiment, described electric car charger comprises fan 7, and described fan 7 is arranged in described radiation tooth 4, by described fan 7 auxiliary heat dissipation.More specifically, fan 7 is arranged in the main heater members heat concentrated area place of corresponding pcb board 3 in radiation tooth 4, forces to carry out pressure heat exchange with ambient air, ensures to dispel the heat evenly, fast, extends the useful life of electric car charger of the present invention.
Particularly, as shown in Figure 1, in the present embodiment, described upper shell 1 sidewall 12 is provided with circular groove 16, is fixed the device of described electric car charger by described circular groove 16.Wear by circular groove 16 device that electric car charger fixed by many screws, be convenient to the Miniaturization Design of electric car charger of the present invention.
More specifically, as shown in Figure 1, in the present embodiment, upper shell 1 sidewall 12 opened round groove 16 may be used for fixing internal device, crucial heating element high-power IGBT 32 (insulated gate bipolar transistor) and upper shell 1 close contact is made by adopting trapezoidal conducting strip 33 and five fastening compressions of M3 mounting screw 6, this mounting means heat radiation is quick, effective, is convenient to the Miniaturization Design of electric car charger of the present invention.Wherein, the compound full-control type voltage driven type power semiconductor that IGBT 32 is made up of BJT (double pole triode) and MOS (insulating gate type field effect tube), has the advantage of the high input impedance of MOSFET and low conduction voltage drop two aspect of GTR concurrently.
Particularly, as shown in Figure 3, in the present embodiment, described lower house connecting portion 22 comprises fixing point connecting hole 29, described fixing point connecting hole 29 is arranged on fixing point boss 25, described fixing point connecting hole 29 is for being connected with exterior object, and described fixing point boss 25 is provided with fixing point groove 26 with described lower house 2 junction.The present embodiment, ensures fastened point intensity by fixing point boss 25 structure, prevents the crackle of lower house 2 press casting procedure from producing by fixing point groove 26 structure, ensures that mould is easily shaping.
Particularly, as shown in Figure 3, in the present embodiment, the position that the corresponding described upper shell 1 (see Fig. 2) seal groove 14 (see Fig. 2) of lower house 2 is inside is provided with positioning convex 24, described positioning convex 24 entirety is U-shaped, correspondingly, described upper shell 1 is provided with detent 17 (see Fig. 2), and described detent 17 (see Fig. 2) and described positioning convex 24 match.By described positioning convex 24 and described detent 17 (see Fig. 2), not only form guiding, be convenient to upper shell 1 (see Fig. 2) and lower house 2 orientation assemble, and serve dustproof effect again, reach the object of secondary protection.
Particularly, as shown in Figure 1, described upper shell 1, described lower house 2 and described radiation tooth 4 all adopt die casting aluminium to make, make the lightweight of electric car charger of the present invention, the outer surface of described upper shell 1, described lower house 2 and described radiation tooth 4 all does black anodizing process, makes electric car charger good heat dissipation effect of the present invention.
Particularly, as shown in Figure 1, described upper shell 1, described lower house 2 and described radiation tooth 4 material selection die casting aluminium, lightweight, be only 1/3rd of equal heat dissipation capacity cast-iron radiator weight, meet electric automobile lightweight demand, and this kind of material molds formability is good, is applicable to producing use in enormous quantities; Aluminum alloy surface does black anodizing, and the heat efficiency is high, good heat conductivity, and under the condition of equal-wattage grade, in pcb board 3, main components surface temperature obviously declines, and extends the life-span of main components in pcb board 3.
Particularly, as shown in Figure 1, in the present embodiment, upper shell 1, lower house 2 adopt eight, both sides and four, the two ends fastening press seal of M5 mounting screw 6, degree of protection is high, meet electric automobile degree of protection IPX7 high request, mounting screw 6 all coated thread locking glue strengthens fastening effect, to meet its locking and vibration requirement.
See Fig. 1, in addition, because the upper part caloric value of electric car charger of the present invention is larger than lower part, therefore upper shell 1, lower house 2 both sides mounting screw 6 (see Fig. 3) are defined as and install from the bottom up, to increase upper shell 1 area of dissipation as far as possible.
Wherein, so-called is upper and lowerly relative concept, the present embodiment is Fig. 1 of seeing with reader for benchmark is as the criterion the upper and lower of definition.
The IPX7 test experiments process of electric car charger of the present invention:
As can be seen here, electric car charger of the present invention, structural design degree of protection is high, lightweight, and heat radiation is even and speed is fast, and long service life, meets modern electric automobile completely to onboard charger user demand.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an electric car charger, is characterized in that, described electric car charger comprises upper shell, pcb board, lower house, radiation tooth and cover plate,
Described upper shell is opening box body, and described upper shell inside is cavity, described upper shell comprises top and sidewall, described sidewall encloses and in described top surrounding, described sidewall bottom outwards extends as upper shell connecting portion in its border relatively, relatively described sidewall border, described sidewall bottom surface is provided with the seal groove of closed loop, is provided with band in described seal groove
Described pcb board is arranged in described upper shell cavity, and described pcb board is fixedly connected with described top,
Described lower house is tabular, described lower house and described upper shell fasten and form charger case, the corresponding described pcb board position of described lower house buckling surface is provided with groove, the corresponding described upper shell connecting portion of described lower house has installed described lower house connecting portion, be fixedly connected with by described upper shell connecting portion and described lower house connecting portion between described lower house with described upper shell, sealed by described band between described lower house and described upper shell
Described radiation tooth is fixedly installed on described outer surface of cupular part, and described pcb board is dispelled the heat by described radiation tooth,
Described cover plate covers above described radiation tooth, and described cover plate is fixedly connected with described upper shell.
2. electric car charger according to claim 1, is characterized in that, it is narrow that described band cross section is middle wide both sides.
3. electric car charger according to claim 1, is characterized in that, described band adopts closed pore silica gel or porous silica gel to make.
4. electric car charger according to claim 1, is characterized in that, the corresponding main heater members position of described pcb board of described lower house is provided with boss, is provided with heat-conducting pad between described boss and the main heater members of described pcb board.
5. electric car charger according to claim 4, is characterized in that, in the non-buckling surface of described lower house, corresponding described lug boss position is provided with hollow structure.
6. electric car charger according to claim 5, is characterized in that, described hollow structure adopts four tetragonal body hollow structures.
7. electric car charger according to claim 1, is characterized in that, described electric car charger comprises fan, and described fan is arranged in described radiation tooth, by described fan auxiliary heat dissipation.
8. electric car charger according to claim 1, is characterized in that, described upper shell sidewall is provided with circular groove, is fixed the device of described electric car charger by described circular groove.
9. the electric car charger according to any one of claim 1-8 claim, it is characterized in that, described lower house connecting portion comprises fixing point connecting hole, and described fixing point connecting hole is arranged on fixing point boss, and described fixing point boss and described lower house junction are provided with fixing point groove.
10. electric car charger according to claim 9, it is characterized in that, described upper shell, described lower house and described radiation tooth all adopt die casting aluminium to make, and the outer surface of described upper shell, described lower house and described radiation tooth all does black anodizing process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510073285.6A CN104659878B (en) | 2015-02-11 | 2015-02-11 | A kind of electric car charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510073285.6A CN104659878B (en) | 2015-02-11 | 2015-02-11 | A kind of electric car charger |
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| Publication Number | Publication Date |
|---|---|
| CN104659878A true CN104659878A (en) | 2015-05-27 |
| CN104659878B CN104659878B (en) | 2017-03-15 |
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| CN201510073285.6A Active CN104659878B (en) | 2015-02-11 | 2015-02-11 | A kind of electric car charger |
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Cited By (4)
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| CN107846817A (en) * | 2017-10-26 | 2018-03-27 | 许继电源有限公司 | The radiator structure and radiator shell of electronic installation |
| CN107995811A (en) * | 2017-12-27 | 2018-05-04 | 苏州睿艾迪汽车科技有限公司 | Fixing device for automobile power back door ECU control mainboards |
| CN109546855A (en) * | 2018-12-28 | 2019-03-29 | 深圳市西林电气技术有限公司 | A kind of DC-DC, onboard charger and the structure of heat dissipation |
| CN116142000A (en) * | 2022-12-31 | 2023-05-23 | 上海大学 | GaN charger for electric automobile |
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| Publication number | Publication date |
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| CN104659878B (en) | 2017-03-15 |
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