CN217730232U - A prevent local high temperature device for new forms of energy fill electric pile - Google Patents

A prevent local high temperature device for new forms of energy fill electric pile Download PDF

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Publication number
CN217730232U
CN217730232U CN202220233422.3U CN202220233422U CN217730232U CN 217730232 U CN217730232 U CN 217730232U CN 202220233422 U CN202220233422 U CN 202220233422U CN 217730232 U CN217730232 U CN 217730232U
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China
Prior art keywords
circuit board
metal plate
electric pile
shell
local high
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Active
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CN202220233422.3U
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Chinese (zh)
Inventor
付好名
沈强
张家亮
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Zhejiang Greatway Electrical Tool Co ltd
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Zhejiang Greatway Electrical Tool Co ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations

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Abstract

The utility model provides a prevent local high temperature device for new forms of energy fill electric pile is applied to portable electric pile that fills, it includes sealed casing to fill electric pile, the device includes: the circuit board is arranged in the shell and fixedly connected with the shell; and a metal plate provided in a gap between an inner wall surface of the case and the circuit board; so that the heat generated by the circuit board is conducted to the outside of the shell through the metal plate and the shell in sequence; this application has reduced and has filled the thermal resistance of electric pile inner circuit board to this route of electric pile casing, does benefit to the extension device life-span, prevents that local overheat from appearing, has improved portable reliability of filling electric pile.

Description

A prevent local high temperature device for new forms of energy fill electric pile
Technical Field
The utility model relates to a new forms of energy fill electric pile technical field, specifically speaking relates to a prevent local high temperature device for new forms of energy fill electric pile.
Background
Electric automobile's portable electric pile that fills, the box that also charges has the circuit board inside, fills the electric pile use, can produce the heat after the hot node circular telegram on the circuit board. The thermal node can be, for example, a component, a pad, a shell of the component, a circuit board routing portion or other portions of the circuit board, and after the device is electrified and works for a long time, the thermal node, for example, the component, may be accompanied by a certain temperature rise, which may cause a heating phenomenon to be more obvious.
Under the general condition, the circuit board is close to the internal face of filling the electric pile casing fixed. The circuit board is little with the internal face clearance of filling the electric pile casing, and the air in the clearance can not natural convection, so the heat of the hot node on the circuit board is mainly outwards lost through the mode to casing radiation and to air conduction. The heat conductivity coefficient of air is very small, the heat resistance of a path from a heat node to the inner wall surface is large, the heat conductivity coefficient of a casing made of nonmetal materials is also very small, the heat resistance of a path from the heat node to the inner wall surface of the casing through internal air and then to the outer wall surface of the casing is very large, and the local overheating phenomenon of the heat node is very obvious. Simultaneously, local high temperature region also can appear in the casing corresponding position of filling electric pile, influences the product and uses experience.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a prevent local high temperature device for new forms of energy fill electric pile has reduced and has filled the thermal resistance of electric pile inner circuit board to this route of electric pile casing, does benefit to the extension device life-span, prevents that local overheat from appearing, improves the reliability of filling electric pile.
According to an aspect of the utility model, a prevent local high temperature device for new forms of energy fill electric pile is provided, fill electric pile including sealed casing, the device includes:
the circuit board is arranged in the shell and fixedly connected with the shell; and
a metal plate provided in a gap between an inner wall surface of the housing and the circuit board; so that the heat generated by the circuit board is conducted to the outside of the shell through the metal plate and the shell in sequence.
Optionally, the device further comprises an insulating member disposed between the circuit board and the metal plate to insulate the circuit board from the metal plate.
Optionally, the circuit board has a thermal node, and the thermal node is disposed on a side surface of the circuit board facing the metal plate, and the thermal node includes a component or a pad.
Optionally, the device further includes an isolation pillar, a first end of the isolation pillar is fixedly connected to the circuit board, and a second end of the isolation pillar presses and fixes the metal plate to the housing, so that the metal plate and the circuit board are insulated from each other.
Alternatively, only one metal plate is provided in a gap between the inner wall surface of the housing and the circuit board.
Optionally, the metal plate is attached to the housing.
Optionally, a plurality of the metal plates arranged in parallel are arranged in a gap between the inner wall surface of the housing and the circuit board.
Optionally, the metal plate is fixedly connected to the circuit board and the housing through screws, respectively, and a gap is formed between the metal plate and the circuit board.
Optionally, the circuit board is fixedly connected with the housing based on a screw, a snap or an adhesive.
Compared with the prior art, the utility model beneficial effect lie in:
the utility model provides a prevent local high temperature device for new forms of energy fill electric pile is through setting up the metal sheet at the circuit board and filling between the electric pile casing, because the diffusion thermal resistance of metal sheet is less than the diffusion thermal resistance of air, so reduced fill electric pile inner circuit board to fill the thermal resistance of this route of electric pile casing, improve the radiating effect, do benefit to the extension device life-span, prevent local overheat, improve the reliability of filling electric pile.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic structural view of a local high temperature prevention device for a new energy charging pile according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a heat dissipation path of a local high temperature prevention device for a new energy charging pile in the prior art;
fig. 3 is the utility model relates to an embodiment discloses a heat dissipation path schematic diagram that is used for new forms of energy to fill electric pile prevent local high temperature device.
Reference numerals
Shell-101, circuit board-102, metal plate-103, pin-104, isolation column-105, insulating part-106 and screw-107.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the embodiments of the disclosure can be practiced without one or more of the specific details, or with other methods, materials, devices, etc. In other instances, well-known technical solutions have not been shown or described in detail to avoid obscuring aspects of the present disclosure. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.
The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements/components/parts/etc.; the terms "comprising," "having," and "providing" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.
As shown in fig. 1, an embodiment of the utility model discloses a prevent local high temperature device for new forms of energy fill electric pile is applied to the portable electric pile that fills of new forms of energy. The device sets up in above-mentioned electric pile that fills. The charging post includes a sealed housing 101, and the housing 101 may be made of a non-metal material such as a plastic material.
The device comprises a circuit board 102 and a metal plate 103. The circuit board 102 is disposed inside the housing 101 and is fixedly connected to the housing 101. The metal plate 103 is provided in a gap between the inner wall surface of the case 101 and the circuit board 102; so that the heat generated by the circuit board 102 is conducted to the outside of the housing 101 through the metal plate 103 and the housing 101 in sequence. In a specific implementation, the metal plate 103 may be an aluminum plate, and the material of the metal plate is not limited in this application.
The circuit board is provided with a thermal node, the thermal node is arranged on the surface of one side of the circuit board facing the metal plate, and the thermal node can be a component, a bonding pad, a shell of the component, a wiring part of the circuit board or other parts of the circuit board. When the heat that hot node produced can not in time spread outside the casing, also when hot node is overheated, for example the temperature of hot node surpasses 110 degrees, can lead to filling the problem that electric pile casing relevant position appears the high temperature region. The following embodiments of the present application are illustrated with the above thermal nodes as pins 104 on the circuit board 102.
Specifically, the circuit board 102 is provided with pins 104, and the pins 104 are located on a side of the circuit board 102 facing the metal plate 103. It should be noted that fig. 1 only shows one pin 104 on the circuit board 102, and the number of the pins 104 is only for illustration and does not represent the actual number of the pins 104.
In this embodiment, the circuit board 102 is fixedly connected to the housing 101 based on a screw 107, a snap, an adhesive, or a potting. However, the connection manner of the circuit board 102 and the housing 101 is not limited to this, and those skilled in the art can set the connection manner according to actual needs.
Alternatively, the metal plate 103 may be attached to the housing 101. Thus, the reduction effect of the diffusion thermal resistance is improved, and the heat dissipation is facilitated.
Alternatively, in some embodiments, a plurality of the metal plates 103 arranged in parallel are disposed in a gap between the inner wall surface of the housing 101 and the circuit board 102. Compared with the prior art, the heat is conducted only by air, the diffusion thermal resistance is reduced, and the heat dissipation effect is improved.
Alternatively, in some embodiments, only one metal plate 103 is provided in the gap between the inner wall surface of the housing 101 and the circuit board 102. Compared with the arrangement of a plurality of metal plates 103 in the gap, the reduction effect of the diffusion heat resistance is better, namely the heat dissipation effect is better.
Optionally, in some embodiments, the apparatus further includes an insulating member 106, and the insulating member 106 is disposed between the circuit board 102 and the metal plate 103, so as to insulate the circuit board 102 from the metal plate 103, prevent conduction between the metal plate 103 and the circuit board 102, and facilitate improvement of reliability of the charging pile. The insulating member 106 and the metal plate 103 may be stacked. In this embodiment, the metal plate 103 is located between the insulating member 106 and the housing 101. The number of the metal plates 103 in this embodiment may be one or more. The present application is not limited thereto. For the corresponding effects, reference may be made to the description of the above embodiments, which are not repeated herein.
In a specific implementation, the insulating member 106 may be insulating paper, and the implementation manner of the insulating member is not limited in this application.
Optionally, in some embodiments, the apparatus further includes an isolation pillar 105, a first end of the isolation pillar 105 is fixedly connected to the circuit board 102, and a second end of the isolation pillar presses the metal plate 103 to the housing 101, so as to position the circuit board 102 and the metal plate 103 and insulate the metal plate 103 from the circuit board 102. In some embodiments, after the insulating member 106 and the metal plate 103 are stacked, the second end of the isolation post 105 presses and fixes the insulating member 106 and the metal plate 103 to the housing 101.
It should be noted that, the above embodiment implements insulation between the metal plate 103 and the circuit board 102 through the isolation column 105, which is only one implementation form of the present application. In other embodiments, a gap may be formed between the metal plate 103 and the circuit board 102 by locking the metal plate 103 and the circuit board 102 to the housing.
Optionally, in some embodiments, the metal plate 103 is fixedly connected to the circuit board 102 and the housing 101 by screws, so that a gap is formed between the metal plate 103 and the circuit board 102, and the metal plate 103 and the circuit board 102 are insulated from each other. Similarly, the present application is not limited to the implementation manner of the insulation between the metal plate 103 and the circuit board 102.
Referring to fig. 2 and fig. 3, the heat dissipation principles of the prior art and the technical solution of the present application are described below:
referring to fig. 2, in the prior art, the pin 104 passes current during the use of the charging pile, and heat is accumulated and the temperature is increased after long-term operation. The gap between the circuit board 102 and the housing 101 is relatively small. The side of the circuit board 102 where the pins 104 are located cannot form a natural air convection environment. Heat from the component pins 104 is dissipated outward primarily by radiation to the housing 101 and conduction to the air.
Specifically, heat generated by the pins 104 is conducted through the air R 1 And radiation R 2 Is directly conducted to the inner surface T of the casing 101 1 Diffusion thermal resistance R of case 101 3 And conductive thermal resistance R 4 Very large, for example, the thermal conductivity of the plastic shell is 0.3W/(m.k), and then the heat passes through the outer surface T of the shell 101 2 Natural convection R of 5 And radiation R 6 To the outside air T 3 And (5) transferring. Because the thermal conductivity of air is very small, the thermal resistance of the path from the pin 104 to the inner wall surface of the housing 101 is large, so that the temperature on the pin 104 is relatively high for the pin 104, and the corresponding area of the housing 101 where the pin 104 is arranged is the local high temperature of the charging box.
Referring to fig. 3, in the present application, heat generated by the pins 104 is conducted through air R 7 And radiation R 8 Is first conducted to the first side T of the metal plate 103 4 Diffusion thermal resistance R of metal plate 103 9 And conductive thermal resistance R 10 Much smaller than air, and then the heat is conducted to the second side T of the metal plate 103 5 When the metal plate 103 and the housing 101 are in close contact, heat continues to be conducted through the conductor R 11 And radiation R 12 To the inner surface T of the casing 101 1 From the inner surface T of the housing 101 1 By conduction of R 13 Is conducted to the outer surface T of the shell 101 2 And then the heat passes through the outer surface T of the casing 101 2 Natural convection R of 14 And radiation R 15 To the outside air T 3 And (5) transferring. Although the heat transfer path becomes complicated, the diffusion thermal resistance of the metal plate 103 is much smaller than that of air, so that the diffusion thermal resistance of the path from the pins 104 to the charging post housing 101 is reduced, and the temperature of the pins 104 is relatively low for the pins 104. The heat dissipation effect is improved.
To sum up, the utility model provides a prevent local high temperature device for new forms of energy fill electric pile has following advantage at least:
the utility model discloses a prevent local high temperature device for new forms of energy fill electric pile is through setting up the metal sheet between the circuit board and fill electric pile casing, because the diffusion thermal resistance of metal sheet is less than the diffusion thermal resistance of air, so reduced and filled the electric pile interior circuit board to fill the thermal resistance of this route of electric pile casing, improve the radiating effect, do benefit to the extension device life-span, prevent local overheat, improve the reliability of filling electric pile, improved user's use and experienced.
In the description of the present invention, it is to be understood that the terms "bottom", "longitudinal", "lateral", "up", "down", "front", "back", "vertical", "horizontal", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of description, but do not indicate or imply that the structures or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more and "several" means one or more unless otherwise specified.
In the description herein, references to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims (8)

1. A prevent local high temperature device for new forms of energy fill electric pile, its characterized in that fills electric pile including sealed casing, the device includes:
the circuit board is arranged in the shell and fixedly connected with the shell; and
a metal plate provided in a gap between an inner wall surface of the housing and the circuit board; so that the heat generated by the circuit board is conducted to the outside of the shell through the metal plate and the shell in sequence; the metal plate is attached to the housing.
2. The local high temperature prevention device for the new energy charging pile according to claim 1, further comprising an insulating member, wherein the insulating member is disposed between the circuit board and the metal plate to insulate the circuit board from the metal plate.
3. The local high-temperature prevention device for the new energy charging pile according to claim 1, wherein the circuit board is provided with a thermal node, the thermal node is arranged on one side surface of the circuit board facing the metal plate, and the thermal node comprises a component or a bonding pad.
4. The local high temperature prevention device for the new energy charging pile according to claim 1, wherein the device further comprises an isolation column, a first end of the isolation column is fixedly connected to the circuit board, and a second end of the isolation column presses and fixes the metal plate to the shell, so that the metal plate and the circuit board are insulated.
5. The local high temperature prevention device for the new energy charging pile according to claim 1, wherein only one metal plate is provided in a gap between the inner wall surface of the housing and the circuit board.
6. The local high-temperature prevention device for the new energy charging pile according to claim 1, wherein a plurality of metal plates are arranged in parallel in a gap between the inner wall surface of the housing and the circuit board.
7. The local high-temperature prevention device for the new energy charging pile according to claim 1, wherein the metal plate is fixedly connected with the circuit board and the shell through screws, and a gap is formed between the metal plate and the circuit board.
8. The local high-temperature prevention device for the new energy charging pile according to claim 1, wherein the circuit board is fixedly connected with the shell in a screw, buckle or adhesive mode.
CN202220233422.3U 2022-01-27 2022-01-27 A prevent local high temperature device for new forms of energy fill electric pile Active CN217730232U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202220233422.3U CN217730232U (en) 2022-01-27 2022-01-27 A prevent local high temperature device for new forms of energy fill electric pile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202220233422.3U CN217730232U (en) 2022-01-27 2022-01-27 A prevent local high temperature device for new forms of energy fill electric pile

Publications (1)

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CN217730232U true CN217730232U (en) 2022-11-04

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CN (1) CN217730232U (en)

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