CN215188120U - Electromagnetic wave shielding plate - Google Patents
Electromagnetic wave shielding plate Download PDFInfo
- Publication number
- CN215188120U CN215188120U CN202120838361.9U CN202120838361U CN215188120U CN 215188120 U CN215188120 U CN 215188120U CN 202120838361 U CN202120838361 U CN 202120838361U CN 215188120 U CN215188120 U CN 215188120U
- Authority
- CN
- China
- Prior art keywords
- electromagnetic wave
- wave shielding
- shielding plate
- main body
- protruding
- 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.)
- Active
Links
- 230000000694 effects Effects 0.000 abstract description 13
- 230000004584 weight gain Effects 0.000 abstract 1
- 235000019786 weight gain Nutrition 0.000 abstract 1
- 230000001902 propagating effect Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
Images
Abstract
The utility model provides an electromagnetic wave shielding plate. The electromagnetic wave shielding plate comprises a flat plate-shaped main body; a plurality of first protruding portions protruding from the front surface of the main body portion and linearly extending in parallel with each other at intervals; and a plurality of second protruding portions protruding from the back surface of the main body portion and extending concentrically with a space therebetween. Based on the above structure of the utility model, can ensure to obtain abundant electromagnetic wave shielding effect, can restrain electromagnetic wave shield plate's weight gain again.
Description
Technical Field
The utility model relates to an electromagnetic wave shielding plate capable of shielding electromagnetic waves generated by electric wires.
Background
Generally, high-voltage wiring is disposed under a floor of an electric vehicle or a hybrid vehicle, and low-frequency electromagnetic waves (10Hz to 400kHz) generated by the high-voltage wiring may adversely affect the health of a vehicle occupant. In order to reduce the electromagnetic wave reaching the occupant, for example, a method of reducing the current, a method of increasing the distance between the electromagnetic wave generating source and the occupant, a method of shielding the electromagnetic wave with an electromagnetic wave shielding plate, or the like can be employed.
However, reducing the current may result in reduced performance of the vehicle. In addition, since the installation position of the electromagnetic wave generation source is generally limited to a predetermined range, the distance between the electromagnetic wave generation source and the occupant can be increased only to a limited extent. Therefore, it is difficult to sufficiently reduce electromagnetic waves using only these methods, and an electromagnetic wave shielding plate needs to be used at the same time. That is, as a countermeasure for reducing electromagnetic waves, it is necessary to use an electromagnetic wave shielding plate.
However, the conventional electromagnetic wave shielding plate has a problem that it is difficult to avoid an increase in weight of the electromagnetic wave shielding plate if a sufficient electromagnetic wave shielding effect is to be ensured. Specifically, the shielding effect of the electromagnetic wave shielding plate depends on the material and thickness thereof, and the shielding effect is improved when the thickness is increased. However, as the thickness of the electromagnetic wave shielding plate increases, the electromagnetic wave shielding plate increases in volume and weight, which leads to an increase in power consumption of the vehicle.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, an object of the present invention is to provide an electromagnetic wave shield plate that can ensure that sufficient electromagnetic wave shielding effect can be obtained and weight increase can be suppressed.
As a technical scheme for solving the above technical problem, the utility model provides an electromagnetic wave shield plate, this electromagnetic wave shield plate are used for shielding the electromagnetic wave that the electric wire produced, its characterized in that: comprises a tabular main body part; a plurality of first protruding portions protruding from a front surface of the main body portion and linearly extending in parallel with each other at intervals; and a plurality of second protruding portions protruding from the rear surface of the main body portion and extending concentrically with a space therebetween.
Based on the above-mentioned electromagnetic wave shield plate of the utility model, the electromagnetic wave that comes from the electric wire can be offset by the electromagnetic wave that induced current produced on the first protruding portion, or the electromagnetic wave that induced current produced on the second protruding portion to can reduce the amount of electromagnetic wave, and, because first protruding portion, second protruding portion form respectively in the front of same electromagnetic wave shield plate, reverse side, so can restrain the weight increase of electromagnetic wave shield plate.
In the electromagnetic wave shielding plate of the present invention, it is preferable that the first protruding portion extends in a direction perpendicular to a propagation direction of an electromagnetic wave propagating in parallel to the main body portion among the electromagnetic waves generated by the electric wire.
Drawings
Fig. 1 is a longitudinal sectional view showing a schematic configuration of a battery pack using an electromagnetic wave shielding plate according to an embodiment of the present invention.
Fig. 2 is a schematic perspective view showing the front side of the electromagnetic wave shielding plate.
Fig. 3 is a schematic perspective view showing the back side of the electromagnetic wave shielding plate.
Detailed Description
Hereinafter, an electromagnetic wave shielding plate according to an embodiment of the present invention will be described with reference to the drawings.
Fig. 1 is a longitudinal sectional view showing a schematic configuration of a battery pack 2 using an electromagnetic wave shielding plate 1 of the present embodiment. As shown in fig. 1, the battery pack 2 is configured by disposing a plurality of unit cells 3 inside an electromagnetic wave shielding case 7. Each of the unit cells 3 is provided with a bus bar 4, a voltage detection plate 5, an electric wire 6, and the like.
The battery cell 3 includes a battery case 8 in which an electrolyte is stored, and a pair of battery cell terminals 9 provided at the top of the battery case 8 and protruding upward. The bus bar 4 is made of a conductive material, and the cell terminals 9 of the adjacent cells 3 are electrically connected to each other. The voltage detection plate 5 is made of a conductive material and is stacked on the bus bar 4. The electric wire 6 is used for detecting the voltage of each cell 3, and has one end connected to the voltage detection plate 5 and the other end connected to an external voltage detector (not shown in detail).
The electromagnetic wave shield case 7 includes a lower case 10 for housing the above components, and an upper cover 11 for covering an upper opening of the lower case 10. In the present embodiment, the upper cover 11 is formed of the electromagnetic wave shielding plate 1.
Fig. 2 is a schematic perspective view showing the front side of the electromagnetic wave shielding plate 1, and fig. 3 is a schematic perspective view showing the back side of the electromagnetic wave shielding plate 1. As shown in fig. 2 and 3, the electromagnetic wave shielding plate 1 includes a flat plate-shaped main body 12, a plurality of first protruding portions 14 protruding from a front surface 13 of the main body 12, and a plurality of second protruding portions 16 protruding from a rear surface 15 of the main body 12.
Here, as the material of the electromagnetic wave shielding plate 1, any material known in the art having a characteristic of shielding electromagnetic waves can be used. For example, the electromagnetic wave shield plate 1 may be formed of a material in which metal layers are provided on both surfaces of a carbon fiber-reinforced plastic, or a material in which a metal plating layer is provided on the front surface of a blended fabric of metal fibers and nonmetal fibers.
The plurality of first protruding portions 14 mainly serve to shield electromagnetic waves propagating in a direction substantially parallel to the main body portion 12. As shown in fig. 1 and 2, each of the first protruding portions 14 is formed as a bar-shaped protrusion having a rectangular cross section, and the first protruding portions 14 linearly extend in parallel with each other at predetermined intervals in a plan view.
The plurality of second protruding portions 16 mainly serve to shield electromagnetic waves propagating in a direction substantially perpendicular to the main body portion 12. As shown in fig. 1 and 3, each of the second protrusions 16 is formed as an annular protrusion having a rectangular cross section, and the second protrusions 16 extend concentrically with a predetermined interval from the same point as a center of the circle when viewed from above.
In the present embodiment, the thickness of the body 12 is set to 0.2 mm. The first protruding portions 14 are formed to have a width of 1mm and a height of 1.5mm, and the interval between adjacent first protruding portions 14 is 3 mm. The second projecting portions 16 are formed to have a width of 1mm and a height of 1mm, and the interval between the adjacent second projecting portions 16 is 0.33 mm. In addition, the dimensions of the respective portions of the electromagnetic wave shielding plate 1 may be appropriately designed or changed in accordance with a desired shielding effect, an allowable weight, and the like.
When the electromagnetic wave shielding plate 1 having the above-described structure is used as the upper cover 11, as shown in fig. 1, the front surface 13 faces the inside of the electromagnetic wave shielding case 7, and the rear surface 15 faces the outside of the electromagnetic wave shielding case 7. Thus, the upper cover 11 is configured to have a first protruding portion 14 on a side facing the electric wire 6 as an electromagnetic wave generating source and a second protruding portion 16 on a side facing away from the electric wire 6. As shown in fig. 2, the extending direction of the first protruding portion 14 is substantially perpendicular to the propagation direction of the electromagnetic wave generated by the electric wire 6 and reaching the electromagnetic wave shielding plate 1 (the electromagnetic wave propagating substantially parallel to the main body portion 12).
Next, the operation and effect of the electromagnetic wave shielding plate 1 of the present embodiment will be described. Since the electromagnetic wave shielding case 7 of the battery pack 2 is constituted by the electromagnetic wave shielding plate 1 having the above-described structure, when a part of the electromagnetic wave generated by the electric wires 6 housed in the lower case 10 of the electromagnetic wave shielding case 7 reaches the upper cover 11 of the electromagnetic wave shielding case 7, if the propagation direction of the electromagnetic wave is substantially parallel to the main body 12 of the electromagnetic wave shielding plate 1 constituting the upper cover 11, an induced current is generated in the first protruding portion 14 on the inner side surface of the upper cover 11, and since the extending direction of the first protruding portion 14 is substantially perpendicular to the propagation direction of the electromagnetic wave, the propagation direction of the electromagnetic wave generated by the induced current is substantially parallel to the main body 12 and is opposite to the propagation direction of the electromagnetic wave from the electric wires 6. Therefore, the electromagnetic wave generated by the induced current on the first protruding portion 14 acts to cancel the electromagnetic wave from the electric wire 6. This can reduce the amount of electromagnetic waves that pass through the upper cover 11 and leak upward.
On the other hand, as shown in fig. 3, if the propagation direction of the electromagnetic wave propagating from the electric wire 6 to the upper cover 11 is substantially perpendicular to the main body 12 of the electromagnetic wave shielding plate 1 constituting the upper cover 11, an induced current is generated in the first protruding portion 14 of the upper cover 11. In this case, the electromagnetic wave generated by the induced current and propagating parallel to the main body 12 cannot play a role of canceling the electromagnetic wave from the electric wire 6. However, most of the electromagnetic waves from the electric wires 6 pass through the main body portion 12 and reach the second protruding portion 16 formed on the outer surface of the upper cover 11, and an induced current is generated in the second protruding portion 16, and since the second protruding portion 16 extends concentrically, the propagation direction of the electromagnetic waves generated by the induced current is substantially perpendicular to the main body portion 12 and opposite to the propagation direction of the electromagnetic waves from the electric wires 6. Therefore, the electromagnetic wave generated by the induced current on the second protruding portion 16 can play a role of canceling the electromagnetic wave from the electric wire 6. This can reduce the amount of electromagnetic waves that leak upward through the upper lid 11.
Therefore, regardless of the propagation direction of the electromagnetic wave from the electric wire 6, one of the first protruding portion 14 and the second protruding portion 16 can play a role of reducing the amount of the electromagnetic wave leaking upward, and the electromagnetic wave shielding plate 1 can be ensured to have a sufficient electromagnetic wave shielding effect. In addition, since a sufficient shielding effect can be obtained by the first projecting portion 14 and the second projecting portion 16, the degree of dependency on the shielding effect of the main body portion 12 is reduced. This reduces the thickness of the main body 12, thereby reducing the weight of the electromagnetic wave shielding plate 1 and the electromagnetic wave shielding case 7. Thus, a sufficient electromagnetic wave shielding effect can be ensured, and the weight can be reduced.
Further, with the electromagnetic wave shielding plate 1 in which the first protruding portion 14 is formed on the front surface 13 of the main body portion 12 and the second protruding portion 16 is formed on the rear surface 15 of the main body portion 12, it is possible to cope with electromagnetic waves having different propagation directions with one type of electromagnetic wave shielding plate 1, that is, to obtain a sufficient shielding effect regardless of the propagation direction of the electromagnetic wave from the electric wire 6. Therefore, compared to a configuration in which different types of electromagnetic wave shielding plates 1 (that is, the electromagnetic wave shielding plate 1 in which the first protruding portions 14 are formed only on one surface of the main body portion 12 and the electromagnetic wave shielding plate 1 in which the second protruding portions 16 are formed only on one surface of the main body portion 12) are used depending on the propagation direction of the electromagnetic wave, the cost of the electromagnetic wave shielding case 7 and the operation management cost can be reduced.
Further, according to the configuration of the electromagnetic wave shielding plate 1, since the first protruding portion 14 is formed on the front surface 13 of the main body 12 and the second protruding portion 16 is formed on the rear surface 15 of the main body 12, the area is increased and the heat dissipation capability is increased as compared with the configuration in which the first protruding portion 14 or the second protruding portion 16 is formed only on one surface of the main body 12, and therefore, there is an effect that the heat dissipation performance of the battery pack 2 can be improved.
The technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be implemented within the scope defined by the claims. Hereinafter, a modified example of the embodiment of the present invention will be described.
In the present embodiment, the first protruding portion 14 and the second protruding portion 16 have a rectangular cross section, but the present invention is not limited thereto. The cross-section of the first and second projections 14, 16 may be any shape.
In the present embodiment, the plurality of first protruding portions 14 extend in the same direction over the entire electromagnetic wave shielding plate 1, but the present invention is not limited to this. If the direction in which the wires 6 extend differs from location to location within the battery pack 2, the electromagnetic wave shielding plate 1 may be divided into a plurality of regions, and the direction in which the first protruding portions 14 extend may be set for each region, corresponding to the direction in which the wires 6 extend.
In the present embodiment, the plurality of second protruding portions 16 are configured to extend concentrically, that is, the plurality of second protruding portions 16 are configured as annular protrusions arranged at a predetermined interval from each other with the same point as the center of a circle in a plan view. The plurality of second protruding portions 16 may be configured as a plurality of sets of concentric circles according to the size and shape of the electromagnetic wave shielding plate 1.
In the present embodiment, only the electromagnetic wave shielding plate 1 is applied to the upper cover 11 in the electromagnetic wave shielding case 7 in order to prevent electromagnetic waves from leaking upward through the electromagnetic wave shielding case 7 when the battery pack 2 is disposed under the floor of the vehicle compartment, but the present invention is not limited thereto. The electromagnetic wave shielding plate 1 may be applied to only the lower case 10 of the electromagnetic wave shielding case 7 or to both the upper cover 11 and the lower case 10 depending on the arrangement position of the battery pack 2.
In the present embodiment, the electromagnetic wave shielding plate 1 constitutes the electromagnetic wave shielding case 7 in a state where the front surface 13 faces the inside and the back surface 15 faces the outside, but the present invention is not limited to this. Conversely, the electromagnetic wave shielding plate 1 may be configured such that the front surface 13 faces the outside and the rear surface 15 faces the inside to form the electromagnetic wave shielding case 7. However, in the electromagnetic wave shielding plate 1 constituting the electromagnetic wave shielding case 7 of the battery pack 2, since most of the electromagnetic waves that arrive are those whose propagation directions are substantially parallel to the main body portion 12, the electromagnetic waves can be more cancelled inside the electromagnetic wave shielding case 7 by the first protruding portions 14, and the amount of electromagnetic waves leaking to the outside of the electromagnetic wave shielding case 7 can be more reliably reduced.
In the present embodiment, the electromagnetic wave shield case 7 is configured by the electromagnetic wave shield plate 1, but the present invention is not limited to this. The electromagnetic wave shielding plate 1 may be used as a member other than the housing.
In the present embodiment, the electromagnetic wave shielding case 7 is used for the battery pack 2, but the present invention is not limited thereto. The electromagnetic wave shielding case 7 may also be used for any other electrical equipment that houses the electric wire 6.
Claims (2)
1. An electromagnetic wave shielding plate for shielding electromagnetic waves generated from an electric wire, characterized in that:
is provided with
A tabular main body portion;
a plurality of first protruding portions protruding from a front surface of the main body portion and linearly extending in parallel with each other at intervals; and
and a plurality of second protruding portions protruding from the back surface of the main body portion and extending concentrically with a space therebetween.
2. The electromagnetic wave shielding plate as set forth in claim 1, characterized in that:
the extending direction of the first protruding portion is perpendicular to a propagation direction of an electromagnetic wave that propagates parallel to the main body portion among the electromagnetic waves generated by the electric wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120838361.9U CN215188120U (en) | 2021-04-20 | 2021-04-20 | Electromagnetic wave shielding plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120838361.9U CN215188120U (en) | 2021-04-20 | 2021-04-20 | Electromagnetic wave shielding plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215188120U true CN215188120U (en) | 2021-12-14 |
Family
ID=79362589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120838361.9U Active CN215188120U (en) | 2021-04-20 | 2021-04-20 | Electromagnetic wave shielding plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215188120U (en) |
-
2021
- 2021-04-20 CN CN202120838361.9U patent/CN215188120U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101243910B1 (en) | Secondary battery pack having protection circuit module connecting by wire | |
| US9093698B2 (en) | Fuel cell stack casing | |
| CN104377339B (en) | Rechargeable battery | |
| US11848432B2 (en) | Battery module | |
| KR102416919B1 (en) | Battery module | |
| US11817594B2 (en) | Battery module including protection cover covering flexible printed circuit board | |
| CN115066786A (en) | Battery module | |
| CN215188120U (en) | Electromagnetic wave shielding plate | |
| CN110875457B (en) | Battery wiring module | |
| JP5413407B2 (en) | Electronic equipment | |
| US20220344726A1 (en) | Battery Pack | |
| KR102558559B1 (en) | Substrate module | |
| JP7225795B2 (en) | power storage device | |
| US20220294073A1 (en) | Battery Module | |
| CN219658819U (en) | Battery and electricity utilization device | |
| CN113179622B (en) | Battery mounting structure in vehicle | |
| US20220344764A1 (en) | Battery Pack | |
| CN217062333U (en) | Battery module and battery pack | |
| US20240072342A1 (en) | Battery connector plate with electromagnetic shield | |
| CN217562776U (en) | Battery and electronic device | |
| CN115621636A (en) | Electricity storage device | |
| CN115799736A (en) | Battery pack |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |