CN208984689U - A kind of direct-current charging post electric energy metering module shell - Google Patents
A kind of direct-current charging post electric energy metering module shell Download PDFInfo
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- CN208984689U CN208984689U CN201821338892.6U CN201821338892U CN208984689U CN 208984689 U CN208984689 U CN 208984689U CN 201821338892 U CN201821338892 U CN 201821338892U CN 208984689 U CN208984689 U CN 208984689U
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- shell
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- energy metering
- copper diverter
- manganese copper
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Abstract
The utility model discloses a kind of direct-current charging post electric energy metering module shells, the manganese copper diverter of direct-current charging post and ic for energy metering are placed into a shell, pass through making rational planning for for structure, charging pile metering units shell is divided into two sheaf spaces, bottom space is used to fixed placement manganese copper diverter, upper space is used to place circuit printing plate, two sheaf spaces are isolated using thermal insulation board, bottom space (bottom case) external metal heat sink simultaneously, manganese copper diverter is closely connected by insulating heat-conduction material and metal heat sink, the heat of manganese copper diverter is directly exported bottom case.The utility model design ensure that safety of the direct-current charging post as measurement instrument, realize integrated lead sealing, use unique heat dissipation design, solve heat dissipation problem of the copper-manganese piece in high current work.
Description
Technical field
The utility model belongs to charging pile industry more particularly to a kind of shell of direct-current charging post electric energy metering module is set
Meter.
Background technique
The charging work electric current of direct-current charging post is larger, and generally in 100A-300A, rechargeable electrical energy metering is shunted using copper-manganese
Device carries out current signal sampling, and in order to guarantee the precision of metering, the sampled signal of manganese copper diverter output is in maximum current
For 75mV, the charging pile that corresponding maximum output current is 300A, the resistance value of manganese copper diverter is selected as 250 micro-ohms, and copper-manganese shunts
The maximum loss of device itself calculates as follows: P=I*I*R=22.5W.It is calculated as manganese copper diverter above and charging copper bar is reliable
In the case where connection, and the contact resistance of junction is had ignored, the connection of manganese copper diverter and copper bar can in practice
There are contact resistances, and the resistance value of contact resistance is also greater than the resistance value of manganese copper diverter itself, and such manganese copper diverter is just
As in entire charging pile be a powerful heater element.According to current actual measurement, in charging pile external environment temperature 40
DEG C, under the operating condition that 300A persistently charges, the surface temperature of manganese copper diverter can achieve 120 DEG C or more.Direct-current charging post at present
Electric energy metered system include direct current energy meter and external manganese copper diverter, the main reason for manganese copper diverter is external is exactly to be
It can good heat dissipation, avoid it from impacting other electronic components in direct current energy meter.
With the quantity explosive growth of charging pile in recent years, electric car charge user increasingly pays close attention to charging pile electric energy
The accuracy of metering, technical supervision department is also increasingly clear for the reinforcement of charging pile management through quantification, and 2017 by national quality
The charging pile series vertification regulation of supervision and inspection quarantine general bureau publication, specifies that charging pile is integrally used as the calibrating item of measurement instrument
Mesh and calibrating details.For the currently used direct current energy meter of direct-current charging post+external manganese copper diverter metered scheme
Be unable to satisfy its management requirement as measurement instrument, main cause is as follows: manganese copper diverter and direct current energy meter be not at one
Lead sealing can not be carried out in complete shell, is unable to ensure its safety as measurement instrument.
Summary of the invention
The utility model is directed to deficiency existing for the above existing technology, provides a kind of plastic housing with radiator
Body realizes manganese copper diverter and samples integrative installation technology and the lead sealing of metering circuit, and uses unique heat dissipation and set
Meter solves heat dissipation problem of the copper-manganese piece in high current work.
Purpose is appealed to realize, the utility model is made rational planning for by structure, charging pile metering units shell is divided into
Two sheaf spaces, bottom space, which is used to fix, to be prevented setting manganese copper diverter, and upper space is used to place circuit printing plate, and two sheaf spaces are adopted
It is isolated with thermal insulation board, while bottom space (bottom case) external metal heat sink, manganese copper diverter passes through insulating heat-conduction material and gold
Belong to radiator closely to connect, the heat of manganese copper diverter is directly exported bottom case.After drawing completes 3D effect figure in design process
Hot emulation and actual test have been carried out, at 45 DEG C of environment temperature, has continued charging current in 300A, places in the cavity of printed board
Temperature rise is no more than 25 DEG C (absolute temperature is not higher than 60 DEG C), due to printed board and the normal working temperature range of electronic element
It is -40-85 DEG C, the design realizes design object well.
Detailed description of the invention
Fig. 1 is existing direct-current charging post metering system schematic diagram.
Fig. 2 is the utility model plastic casing facing structure figure.
Fig. 3 is the utility model plastic casing side block diagram.
Fig. 4 is the utility model plastic casing backsight structure chart.
Fig. 5 is the utility model plastic casing overhead view structure chart.
In figure: 1. direct current energy meter, 2. manganese copper diverter, 3. case top lid, 4. shell input terminal lid, 5. shell outlet
6. case top lid lead sealing of terminal cover, 7. shell outlet terminal lid lead sealing, 8. shell input terminal lid lead sealing, 9. shell bottom case
10. 11. signal terminal interface 12. of metal heat sink places circuit printing plate space 13. and places manganese copper diverter space 14.
15. insulating heat-conduction material of thermal insulation board, 16. shell ends stroma
Specific embodiment
The structure design and design parameter of the utility model are described in detail with implementation with reference to the accompanying drawing.
Fig. 2-5 is referred to, the design of the utility model includes: electric energy metering module case top lid (3), electric energy metering module
Shell ends stroma (16), electric energy metering module shell bottom case (9), electric energy metering module shell input terminal lid (4), electrical energy measurement
Module housing outlet terminal lid (5).
The design of electric energy metering module case top lid considers the position of two lead sealings, one be producer's factory lead sealing,
One be measurement verification department calibrating after lead sealing.Lead sealing uses Embedded mode.
The terminal base design of electric energy metering module will consider being reliably connected for manganese copper diverter and external copper bar, preserved signal
Terminal.
The bottom case design of electric energy metering module has fully considered that the installation of manganese copper diverter is fixed, external metal heat sink
It designs and fixed, the following are metal heat sink design details: the material selection of metal heat sink, the aluminum material (heat transfer of aluminium
Rate is 2.12W/cm2Thermal conduction effect DEG C) is good, moderate, can be used as the preferred material of the design；Metal heat sink
Moulder moisture, less (22.5W), structural requirement is compact, preferentially selects Section Bar Heat Sinks for heat radiation power in the design；Copper-manganese point
The connection design between device and radiator is flowed, first has to ensure that the close of manganese copper diverter and radiator connects that (contact area to the greatest extent may be used
Can be big), while must assure that manganese copper diverter and cooling fin directly insulate；The selection of heat sink size is passed according to specific heat
Lead calculation formula Q=K* Δ T, while considering the maximum temperature of copper-manganese piece, the maximum temperaturerise of watchcase outer surface, environment temperature etc. because
Usually calculate the size and heat dissipation area of radiator.
There are two the terminal covers of electric energy metering module shell, and one is input terminal lid, and one is outlet terminal lid, inlet wire
Terminal cover is mainly responsible for the protection and lead sealing of inlet wire crimping, and outlet terminal lid is responsible for protection and the signal terminal of wire crimp
It protects, is provided with a lead sealing position in each terminal cover.
Claims (3)
1. a kind of direct-current charging post electric energy metering module shell puts the manganese copper diverter of direct-current charging post with ic for energy metering
It sets into a shell, it is characterised in that: the integrative installation technology and lead sealing of manganese copper diverter and ic for energy metering are used and closed
The shell of charging pile metering module is divided into two sheaf spaces by the structural planning of reason and unique heat dissipation design, shell structure planning,
Bottom space is used to fixed placement manganese copper diverter, and upper space is used to place the printed board of ic for energy metering, two sheaf spaces
It is isolated using thermal insulation board, while the external metal heat sink in shell shell bottom, manganese copper diverter is dissipated by insulating heat-conduction material and metal
Hot device closely connects, and the heat of manganese copper diverter is directly exported bottom case.
2. a kind of direct-current charging post electric energy metering module shell according to claim 1, it is characterised in that: electrical energy measurement mould
There are two the terminal covers of block shell, and one is input terminal lid, is mainly responsible for the protection and lead sealing of inlet wire crimping, one is outlet
Terminal cover is mainly responsible for out the protection of wire crimp and the protection of signal terminal and lead sealing.
3. a kind of direct-current charging post electric energy metering module shell according to claim 1, it is characterised in that: external metal dissipates
Hot equipment matter is aluminum material, and the pyroconductivity of aluminium is 2.12W/cm2DEG C, the metal heat sink is Section Bar Heat Sinks, described
Manganese copper diverter is fixedly connected with metal heat sink.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821338892.6U CN208984689U (en) | 2018-08-20 | 2018-08-20 | A kind of direct-current charging post electric energy metering module shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821338892.6U CN208984689U (en) | 2018-08-20 | 2018-08-20 | A kind of direct-current charging post electric energy metering module shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208984689U true CN208984689U (en) | 2019-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821338892.6U Active CN208984689U (en) | 2018-08-20 | 2018-08-20 | A kind of direct-current charging post electric energy metering module shell |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111679106A (en) * | 2020-04-30 | 2020-09-18 | 中国电力科学研究院有限公司 | Integrated direct current electric energy meter |
| CN111766554A (en) * | 2020-06-12 | 2020-10-13 | 浙江瑞银电子有限公司 | Direct current ammeter with wide metering range |
| CN111856133A (en) * | 2020-06-12 | 2020-10-30 | 中国电力科学研究院有限公司 | Electric energy metering device and metering method suitable for direct current large current |
| CN113406372A (en) * | 2021-04-28 | 2021-09-17 | 国网浙江省电力有限公司营销服务中心 | Integrated direct-current electric energy meter adopting current isolation bin |
-
2018
- 2018-08-20 CN CN201821338892.6U patent/CN208984689U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111679106A (en) * | 2020-04-30 | 2020-09-18 | 中国电力科学研究院有限公司 | Integrated direct current electric energy meter |
| CN111766554A (en) * | 2020-06-12 | 2020-10-13 | 浙江瑞银电子有限公司 | Direct current ammeter with wide metering range |
| CN111856133A (en) * | 2020-06-12 | 2020-10-30 | 中国电力科学研究院有限公司 | Electric energy metering device and metering method suitable for direct current large current |
| CN113406372A (en) * | 2021-04-28 | 2021-09-17 | 国网浙江省电力有限公司营销服务中心 | Integrated direct-current electric energy meter adopting current isolation bin |
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