CN208480172U - A kind of charging unit - Google Patents
A kind of charging unit Download PDFInfo
- Publication number
- CN208480172U CN208480172U CN201820859041.XU CN201820859041U CN208480172U CN 208480172 U CN208480172 U CN 208480172U CN 201820859041 U CN201820859041 U CN 201820859041U CN 208480172 U CN208480172 U CN 208480172U
- Authority
- CN
- China
- Prior art keywords
- heat sink
- heat
- charging unit
- circuit board
- shell
- 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.)
- Expired - Fee Related
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a kind of charging unit, including fully closed shell, circuit board assemblies and heat sink, circuit board assemblies include circuit board and the crucial heat-generating electronic elements for being fixedly welded on back of circuit board；The inner wall of shell have opening and can fixed placement heat sink cavity, the outer casing inner wall of cavity position also has grate opening, sealing element is additionally provided between cavity and heat sink；Crucial heat-generating electronic elements are contacted with heat sink transfers heat to heat sink, and heat sink transfers heat to the external world by grate opening.Different from the fan cooling of existing charger, the utility model charging unit is all-sealed waterproof dust-proof, it is radiated by the way that heat sink is arranged in the top surface of charger, heat sink is covered using the shell with grate opening simultaneously, it prevents heat sink from directly being ironed with finger touch by people, while will not influence the radiating efficiency of heat sink again；Calorific value when charging normal flexibly changes the area of radiating surface, to reduce cost.
Description
Technical field
The utility model relates to electric vehicle charging or other electric appliances charging fields, and in particular to a kind of charging unit.
Background technique
In recent years, domestic electric vehicle fire takes place frequently and growth trend year by year, causes a tremendous loss of lives, accident exposes electricity
Motor-car production standard, product quality, circulation sale, maintenance repacking, parking charging, safety management etc., there are outstanding problems.
Some of fire be electric vehicle during the charging process caused by, cause be some electric vehicle car owners charging when selection outdoor into
Row charging, the charger of electric vehicle are placed directly on ground or vehicle body, when experience rainy weather or have other liquid to enter
When charger, charger will may cause spontaneous combustion because of short circuit, and the electric vehicle that finally ignites leads to fire.
Charger intake the main reason for be as caused by the structure of charger, it is most of electronic on the market at present
The calorific value in charging of vehicle charger is larger, only can not be by the temperature limiting of charger in rated condition by plastic shell heat dissipation
Under, fan cooling is then taken, and fan is installed and has to that ventilation hole is arranged on the shell, it could be by charger internal electronics member
The heat that part generates is distributed by the exchange of inside and outside air-flow, and the presence of exactly ventilation hole makes charger that can not accomplish to seal
The requirement of waterproof.
Existing some chargers are in order to achieve the effect that seal waterproof and good heat radiating, using all aluminium alloy shell type
Scheme, then by filling insulating heat-conductive casting glue in the gap between shell and circuit board assemblies.Although this scheme can
To reach expected technical effect, but simultaneously also along with other side effects: first, depositing due to aluminum shell and casting glue
Leading to the cost of charger substantially increasing compared to ordinary construction itself；Second, application conditions receive limitation, all-plastic
The low cost of shell is without heat dissipation, the high cost good heat dissipation of the full aluminum shell of casting glue, between the two again without other schemes, with future
The reduction of technological progress electronic component calorific value or the calorific value of charger itself are little, which kind of scheme no matter is used not to be
It is most suitable, it is in other words also short of a kind of scheme to fall between at present.
Summary of the invention
For the shortcoming for avoiding background technique, the utility model provides a kind of charging unit, has totally enclosed type shell,
Water proof and dust proof, while balance can also be obtained between cost and heat dissipation effect.
The utility model proposes a kind of charging unit, including fully closed shell, circuit board assemblies and heat sink,
Circuit board assemblies include circuit board and crucial heat-generating electronic elements, and crucial heat-generating electronic elements are fixedly welded on the back of circuit board
Face；The inner wall of shell have opening and can fixed placement heat sink cavity, the outer casing inner wall of cavity position also have with
The grate opening of external world's connection, being additionally provided between cavity and heat sink prevents from being in communication with the outside inside charging unit by grate opening
Sealing element；Crucial heat-generating electronic elements body surfaces and the thermally conductive face contact of heat sink are simultaneously transferred heat to scattered by thermal conductive surface
The radiating surface of hot plate, heat sink transfers heat to the external world by grate opening.
Further, the insulating part that can prevent the two from contacting is additionally provided between heat sink and circuit board.
Preferably, insulating part is PC insulating trip or nylon insulating trip or highland barley paper or PET insulating trip.
Further, the thermal conductive surface of heat sink has groove, and groove avoids connecing for crucial heat-generating electronic elements and thermal conductive surface
Touch the fringe region of region and thermal conductive surface.
Further, fillable sky is equipped between crucial heat-generating electronic elements body surfaces and the contact surface for the plate surface that radiates
The heat conductive insulating medium of gap.
Preferably, heat conductive insulating medium is heat-conducting silicone grease or heat-conducting silica gel sheet.
Further, the radiating surface of heat sink has the strip groove being spaced apart or meshed grooves.
Further, the grille strip of every strip groove face grate opening.
Further, circuit board assemblies include micro controller module and the sleet connecting with micro controller module sensing
Device, sleet sensor are set to the top surface of shell, for detecting whether there is sleet situation, if so, micro controller module control
Charging unit processed takes safeguard measure.
Further, circuit board assemblies include micro controller module and the gravity sensitive that connect with micro controller module
Whether upward device, gravity sensor are used to detect the top surface of shell when charging, if it is not, then micro controller module controls charging unit
Take safeguard measure.
The utility model beneficial effect is that the fan cooling different from existing charger, the utility model charging unit are
It is all-sealed waterproof dust-proof, by the setting heat sink heat dissipation in charger top surface, while using the shell for having grate opening
Heat sink is covered, prevents heat sink from directly being ironed with finger touch by people, while will not influence the radiating efficiency of heat sink again；Just
Often calorific value when charging flexibly changes the area of radiating surface, to reduce cost；Single unit system is waterproof dust-proof, avoids the external world
Water or impurity enter inside charging unit cause circuit board short circuit cause fire.
Detailed description of the invention
Fig. 1 is the structural blast schematic diagram of embodiment charging unit.
Fig. 2-Fig. 3 is the structural schematic diagram of the heat sink of embodiment charging unit.
Fig. 4-Fig. 5 is the structural schematic diagram of the upper cover of embodiment charging unit.
Fig. 6 is the heat sink of embodiment charging unit and the cooperation schematic diagram of upper cover.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Embodiment, referring to attached drawing 1-6, a kind of charging unit, including fully closed shell, circuit board assemblies 4 and dissipate
Hot plate 5；Shell includes upper cover 1 and pedestal 2, and sealing ring 3 is additionally provided between upper cover 1 and pedestal 2, by close when the two is coupled
Seal 3 reaches the fully closed effect of monolithic case；Circuit board assemblies 4 include circuit board 43 and electronic component, electronic component root
It is divided into 42 liang of classes of crucial heat-generating electronic elements 41 and secondary heat-generating electronic elements, secondary fever according to its degree of heat at work
Electronic component 42 is fixedly welded on the front of circuit board 43, and crucial heat-generating electronic elements 41 are fixedly welded on the back of circuit board 43
Face；The inner wall of upper cover 1 have one opening and can fixed placement heat sink 5 cavity 12, the partial sidewall of the cavity 12 is by upper
The inner wall of lid 1 is constituted, and the inner wall of the upper cover 1 of 12 position of cavity also has the grate opening 11 that can be in communication with the outside；Heat sink 5
Including thermal conductive surface 51, radiating surface 53, when heat sink 5 is mounted in cavity 12, radiating surface 53 is towards 1 inner wall of upper cover namely grid
Hole 11 can cover the radiating surface 53 of heat sink 5；Be additionally provided between 1 cavity 12 of upper cover and heat sink 5 prevent inside charging unit with
The sealing element 6 of external world's connection, 6 preferred rubber circle of sealing element can prevent environmental liquids or impurity from entering charging by grate opening 11
Inside device；Heat sink 5 is fixed by screw with upper cover 1, while screw tightening, is located between heat sink 5 and upper cover 1
Rubber ring blocks gap while being pressed by the two；The thermal conductive surface 51 of crucial 41 body surfaces of heat-generating electronic elements and heat sink 5
It contacts and passes through thermal conductive surface 51 and transfer heat to heat sink 5, the radiating surface 53 of heat sink 5 passes through grate opening 11 for heat transfer
To the external world；Fever total amount when the size of 5 radiating surface 53 of heat sink can be charged normal according to charging unit is adjusted, if filling
Then the area of radiating surface 53 can increase in right amount greatly for the calorific value of electric installation, to achieve the purpose that balance cost and heat dissipation performance.
The radiating mode of the present embodiment charging unit is different from the fan cooling of existing charger, totally-enclosed anti-in order to reach
The effect of ability of swimming shell, by the heat dissipation of setting heat sink 5 in charger top surface, the upper cover 1 with grate opening 11 can cover scattered
Hot plate 5 can prevent heat sink 5 from being touched by people with finger and iron, and will not influence the radiating efficiency of heat sink 5；It is closed when charging
Key heat-generating electronic elements 41 can generate a large amount of heat, and for these heat transfers into heat sink 5, heat sink 5 is transmitted to air again
In, after the air of heat sink 5 nearby is heated, hot-air rises, and the air around charging unit, which is supplemented in, to be come, and forms circulation.
Compared to the full aluminum shell of casting glue and all-plastic shell of salable waterproof, the present embodiment charging unit heat dissipation effect is between two
Between person, cost also falls between, since radiating efficiency is mainly determined by the size of 5 radiating surface 53 of heat sink, therefore
The present embodiment charging unit can flexibly change the area of radiating surface 53 according to calorific value when charging normal of device, to reduce
Cost.
The preferred copper of 5 material of heat sink or aluminium alloy in the present embodiment, since copper or aluminium alloy are conductive material, in order to anti-
Only the thermal conductive surface 51 of possible heat sink 5 contacts the generation for leading to short circuit phenomenon, heat sink 5 and electricity with the scolding tin on circuit board 43
The insulating part 7 that can prevent the two from contacting is additionally provided between road plate 43, insulating part 7 is PC insulating trip or nylon insulating trip or highland barley paper
Or PET insulating trip.Further, the thermal conductive surface 51 of heat sink 5 has a groove, the groove avoid crucial heat-generating electronic elements 41 with
The contact area of thermal conductive surface 51 and the fringe region of thermal conductive surface 51, the presence of groove can reduce the thermal conductive surface 51 of heat sink 5 with
The contact area of circuit board 43, while the materials of heat sink 5 and the materials of insulating part 7 can also be reduced.
In view of crucial heat-generating electronic elements 41 and the respective hardness of heat sink 5 and the flatness of contact surface, even if
It is contacted with each other between the two after the installation is completed there are in the case where extruding force, also will appear many gaps, in these gaps
Air is the non-conductor of heat, can hinder conduction of the heat of crucial heat-generating electronic elements 41 to heat sink 5, therefore the present embodiment
In, fillable gap is additionally provided between the contact surface of 5 thermal conductive surface 51 of crucial 41 body surfaces of heat-generating electronic elements and heat sink
Heat conductive insulating medium, the preferred heat-conducting silicone grease of heat conductive insulating medium or heat-conducting silica gel sheet.
In addition to the heat transfer efficiency between crucial heat-generating electronic elements 41 and heat sink 5 is critically important, the radiating efficiency of heat sink 5
Also critically important, therefore in order to improve the radiating efficiency of heat sink 5, the radiating surface 53 of heat sink 5 has the strip groove being spaced apart
54 or meshed grooves, the presence of strip groove 54 or meshed grooves can increase the contact area of heat sink 5 Yu air；The present embodiment
It is preferred that strip groove 54.
For charging unit after having used long, the impurity such as dust, foreign matter in air can be covered on the radiating surface 53 of heat sink 5
On, these impurity will affect the radiating efficiency of heat sink 5, every strip groove in order to clean these impurity, on heat sink 5
The grille strip of 54 face upper cover, 1 grate opening 11 passes through grid using tools such as soft brushes when thus can be more than the impurities accumulation
Hole 11 cleans these impurity.
Although the present embodiment charging unit can effectively reach waterproof effect, it is not intended that user can be in the rain
It charges, still there are other factors to may cause waterproof and go wrong, for example the older aging sealing effect of charging unit reduces, or
Shell is impaired to there is crack, therefore in order to further decrease security risk, circuit board assemblies include micro controller module and with it is micro-
The sleet sensor 8 of controller module connection, sleet sensor 8 are set to the top surface of outer casing upper cover 1, for detecting whether occurring
Sleet situation, if so, micro controller module control charging unit takes safeguard measure.
Radiating principle based on heat sink will lead to air stream when charging unit is downward namely when heat sink is placed downward
Move unsmooth, lead to the heat dissipation effect for seriously affecting device, in order to avoid user unintentionally mistake place cause to radiate it is bad, finally
Accident may be caused, circuit board assemblies include that micro controller module and the gravity connecting with micro controller module pass in this implementation
Whether upward sensor, gravity sensor are used to detect the top surface of shell when charging, if it is not, then micro controller module control charging dress
It sets and takes safeguard measure.
Although the utility model is described by reference to preferred embodiment, ordinary skill people
Member is it is to be appreciated that the description that can be not limited to the above embodiments can be made in form and details within the scope of the claims
Various change.
Claims (10)
1. a kind of charging unit, it is characterised in that: including fully closed shell, circuit board assemblies and heat sink, the electricity
Road board group part includes circuit board and crucial heat-generating electronic elements, and the key heat-generating electronic elements are fixedly welded on the circuit board
The back side；The inner wall of the shell have opening and can heat sink described in fixed placement cavity, the cavity position
Outer casing inner wall also has the grate opening being in communication with the outside, and being additionally provided between the cavity and the heat sink prevents in charging unit
The sealing element that portion is in communication with the outside by grate opening；The key heat-generating electronic elements body surfaces are thermally conductive with the heat sink
Face contact simultaneously transfers heat to the heat sink by thermal conductive surface, and the radiating surface of the heat sink is passed heat by grate opening
Pass the external world.
2. a kind of charging unit according to claim 1, it is characterised in that: between the heat sink and the circuit board also
Equipped with the insulating part that can prevent the two from contacting.
3. a kind of charging unit according to claim 2, it is characterised in that: the insulating part is that PC insulating trip or nylon are exhausted
Embolium or highland barley paper or PET insulating trip.
4. a kind of charging unit according to claim 1, it is characterised in that: the thermal conductive surface of the heat sink has groove,
The groove avoids the contact area of crucial heat-generating electronic elements and thermal conductive surface and the fringe region of thermal conductive surface.
5. a kind of charging unit according to claim 1, it is characterised in that: the key heat-generating electronic elements body surfaces
The heat conductive insulating medium in fillable gap is equipped between the contact surface of the heat dissipation plate surface.
6. a kind of charging unit according to claim 5, it is characterised in that: the heat conductive insulating medium be heat-conducting silicone grease or
Heat-conducting silica gel sheet.
7. a kind of charging unit according to claim 1, it is characterised in that: the radiating surface of the heat sink has interval point
The strip groove or meshed grooves of cloth.
8. a kind of charging unit according to claim 7, it is characterised in that: grid described in every strip groove face
The grille strip in hole.
9. a kind of charging unit according to claim 1, it is characterised in that: the circuit board assemblies include microcontroller mould
Block and the sleet sensor connecting with micro controller module, the sleet sensor is set to the top surface of shell, for detecting
Whether sleet situation is occurred, if so, micro controller module control charging unit takes safeguard measure.
10. a kind of charging unit according to claim 1, it is characterised in that: the circuit board assemblies include microcontroller
Module and the gravity sensor being connect with micro controller module, the top surface of shell when the gravity sensor is used to detect charging
Whether upward, if it is not, then the micro controller module control charging unit takes safeguard measure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820859041.XU CN208480172U (en) | 2018-06-05 | 2018-06-05 | A kind of charging unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820859041.XU CN208480172U (en) | 2018-06-05 | 2018-06-05 | A kind of charging unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208480172U true CN208480172U (en) | 2019-02-05 |
Family
ID=65216169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820859041.XU Expired - Fee Related CN208480172U (en) | 2018-06-05 | 2018-06-05 | A kind of charging unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208480172U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108513514A (en) * | 2018-06-05 | 2018-09-07 | 浙江天地人科技有限公司 | A kind of charging unit |
| WO2023151721A3 (en) * | 2023-04-19 | 2024-02-22 | 苏州科易赢信息技术有限公司 | Heat-dissipating waterproof charger for electric vehicle |
-
2018
- 2018-06-05 CN CN201820859041.XU patent/CN208480172U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108513514A (en) * | 2018-06-05 | 2018-09-07 | 浙江天地人科技有限公司 | A kind of charging unit |
| WO2023151721A3 (en) * | 2023-04-19 | 2024-02-22 | 苏州科易赢信息技术有限公司 | Heat-dissipating waterproof charger for electric vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190205 Termination date: 20210605 |