KR20200035676A - Charging control module and electronic component package including the same - Google Patents

Abstract

The present invention relates to a charging control module comprising: a printed circuit board; a connector disposed on the printed circuit board and electrically connected to a charging facility; a communication control unit electrically connected to the connector; an active element electrically connected to the communication control unit; and a plurality of lines disposed between the connector and the communication control unit, wherein the plurality of lines are electrically connected to ground of the charging facility through the connector.

Description

Charging control module and electronic component package including the same {CHARGING CONTROL MODULE AND ELECTRONIC COMPONENT PACKAGE INCLUDING THE SAME}

The embodiment relates to a charging control module and an electronic component package including the same.

A driving device such as an electric vehicle (EV) or a plug-in hybrid electric vehicle (PHEV) is an electric vehicle supply equipment, installed in a charging station for charging the battery. EVSE).

When charging the electric vehicle, if only the charge plug is connected to the electric vehicle inlet and the portable charger is left unconnected to the power source, the ECU of the vehicle always recognizes that the plug is connected and puts it in the turn-on state, so it does not drive and powers in the stopped state Consuming may occur.

To improve this, a charging control module (EVCC) that connects the power plug of the portable charger to the wall mount and applies power using the PWM signal of the Control Pilot output when the charger is ready is required.

At this time, the electric vehicle has a problem that generates electromagnetic waves due to power, communication, etc., causing malfunction.

The embodiment provides a charging control module for preventing malfunction due to electromagnetic waves and an electronic component package including the same.

In addition, there is provided a charging control module for easily removing noise and an electronic component package including the same.

In addition, the present invention provides a charging control module equipped with a protection circuit capable of protecting an IC even when an overcurrent flows in, and an electronic component package including the same.

The problem to be solved in the embodiment is not limited to this, and it will be said that the object or effect that can be grasped from the solution means or embodiment of the problem described below is also included.

The charging control module according to the embodiment includes a printed circuit board; A connector disposed on the printed circuit board and electrically connected to a charging facility; A communication control unit electrically connected to the connector; An active element electrically connected to the communication control unit; And a plurality of lines disposed between the connector and the communication control unit, the plurality of lines including a line electrically connected to the ground of the charging facility through the connector.

The plurality of lines may include: a first line to which power is supplied from the charging facility;

A second line electrically connected to the ground of the charging facility; A third line through which a control signal for controlling the communication control unit moves; And a fourth line connected to the ground of the printed circuit board.

A filter unit including a resistor element and a capacitor may be disposed on the fourth line.

The second line may be disposed between the first line and the third line.

The printed circuit board,

A first layer connected to the first line; A second layer connected to the third line; A first ground layer connected to the fourth line; And a second ground layer connected to the second line.

The first layer may be disposed on the first ground layer, and the first ground layer may be disposed on the second layer.

An insulating layer disposed between the first layer, the second layer, the first ground layer, and the second ground layer may be further included.

The shield may be further disposed to surround the communication control unit, and the shield may be electrically connected to the first ground layer.

A chassis case electrically connected to the printed circuit board may be further included.

The electronic component package according to the embodiment includes a battery; And a charging control module controlling to supply power to the battery, wherein the charging control module includes: a printed circuit board; A connector disposed on the printed circuit board and electrically connected to a charging facility; A communication control unit electrically connected to the connector; An active element electrically connected to the communication control unit; And a plurality of lines disposed between the connector and the communication control unit, the plurality of lines including a line electrically connected to the ground of the charging facility through the connector.

According to an embodiment, a charging control module for preventing malfunction due to electromagnetic waves and an electronic component package including the same may be implemented.

In addition, a charging control module that easily removes noise and an electronic component package including the same can be manufactured.

In addition, it is possible to improve the malfunction and stoppage of the product due to overcurrent by using a protection circuit.

The various and beneficial advantages and effects of the present invention are not limited to the above, and will be more readily understood in the course of describing specific embodiments of the present invention.

1 is a block diagram showing a charging system of an electric vehicle according to an embodiment of the present invention,
2 is a diagram illustrating a connection method between an electric vehicle and an EVSE,
3 is a block diagram of a charging device for an electric vehicle according to an embodiment of the present invention,
4 is a conceptual diagram of a charging control module according to an embodiment of the present invention,
5 is a view showing a state in which the protection circuit is arranged as a modification of FIG. 4,
6 is a view for explaining the connection configuration of the charging control module according to an embodiment,
Figure 7 is a modification of Figure 6,
8 is a cross-sectional view of a printed circuit board according to an embodiment,
9 is a modification of FIG. 8,
10 is a graph illustrating the effect of the charging control module according to an embodiment,
11 is a view showing an electromagnetic wave state of the charging control module according to an embodiment.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

However, the technical spirit of the present invention is not limited to some embodiments described, but may be implemented in various different forms, and within the scope of the technical spirit of the present invention, one or more of its components between embodiments may be selectively selected. It can be used by bonding and substitution.

In addition, terms (including technical and scientific terms) used in the embodiments of the present invention, unless clearly defined and specifically described, can be generally understood by those skilled in the art to which the present invention pertains. It can be interpreted as a meaning, and terms that are commonly used, such as predefined terms, may be interpreted by considering the contextual meaning of the related technology.

In addition, the terms used in the embodiments of the present invention are for describing the embodiments and are not intended to limit the present invention.

In the present specification, a singular form may also include a plural form unless specifically stated in the phrase, and is combined with A, B, C when described as “at least one (or more than one) of A and B, C”. It can contain one or more of all possible combinations.

In addition, in describing the components of the embodiments of the present invention, terms such as first, second, A, B, (a), and (b) may be used.

These terms are only for distinguishing the component from other components, and the term is not limited to the nature, order, or order of the component.

And, when a component is described as being 'connected', 'coupled' or 'connected' to another component, the component is not only directly connected, coupled or connected to the other component, but also to the component It may also include the case of 'connected', 'coupled' or 'connected' due to another component between the other components.

In addition, when described as being formed or disposed in the “upper (upper) or lower (lower)” of each component, the upper (upper) or lower (lower) is one as well as when the two components are in direct contact with each other. It also includes a case in which another component described above is formed or disposed between two components. In addition, when expressed as “up (up) or down (down)”, it may include the meaning of the downward direction as well as the upward direction based on one component.

1 is a block diagram showing a charging system of an electric vehicle according to an embodiment of the present invention, FIG. 2 is a diagram illustrating a connection method between an electric vehicle and an EVSE, and FIG. 3 is electric according to an embodiment of the present invention It is a block diagram of a car charging device.

Referring to FIG. 1, an electric vehicle (EV, 10) may be charged from an electric vehicle supply equipment (EVSE, 20). To this end, a charging cable connected to the EVSE 20 may be connected to the injection port of the EV 10. Here, the EVSE 20 is a facility that supplies AC or DC current, may be disposed in a charging station, or may be disposed in the home, and may be implemented to be portable.

Referring to FIG. 2, the electric vehicle 10 and the EVSE 20 are connected using a charging cable 50, and the plug of the charging cable 50 may be permanently mounted on the EV 10. At this time, the charging cable 50 may be connected to a household or industrial socket-outlet, or to a charging station.

Referring to FIG. 3, the charging device 11 is included in an electric vehicle, and is connected to an electronic control unit (ECU) 12 in the electric vehicle. The charging device 11 of the electric vehicle includes a CP (control Pilot) port 101, a PD (Proximity Detection) port 102, a PE (Protective Earth) port 103, a charge control module 100, and a power input port (104, 105).

Here, the CP port 101 is a port that receives a control pilot (CP) signal transmitted through a charging cable connected to an electric vehicle supply equipment (EVSE).

PD port 102 is a port that detects the proximity of the connector of the charging cable.

The PE port 103 is a port connected to the ground of the EVSE 20.

The charging device 11 controls the charging of the battery 13. To this end, the charging device 11 uses EVF (Pilot Function) logic for processing a pilot function received through the CP port 101 and a signal received through the PD port 102 (EVSE 20). ) May include PD (Proximity Detection) logic that detects whether or not the connector is injected.

When the charging control module 100 receives a signal received through the CP 101 port and a signal received through the PD port 102, the charging control module 100 controls the switch SW connected to the power input ports 104 and 105. It allows the battery 13 to receive charging power from the EVSE 20. The charging control module 100 may be an electric vehicle communication controller (EVCC).

However, the configuration of the charging control module is not necessarily limited to this, and various configurations capable of controlling charging of the electric vehicle using EVCC may be all included.

4 is a conceptual diagram of a charge control module according to an embodiment of the present invention, FIG. 5 is a view showing a state in which a protection circuit is arranged as a modification of FIG. 4, and FIG. 6 is a charge control module according to an embodiment It is a figure explaining a connection structure, and FIG. 7 is a modification of FIG.

Referring to FIG. 4, the charging control module includes a printed circuit board 150 and a plurality of active elements 120 mounted on the printed circuit board 150 and a plurality of communication control units mounted on the printed circuit board 150 ( 130), a plurality of connectors 140 mounted on the printed circuit board 150 may be included.

The active device 120 may be various active devices such as an integrated circuit (IC). Exemplarily, the active element 120 may be an MCU IC, but is not limited thereto, and may include an active element 120 performing various functions.

In this embodiment, an EVCC for controlling charging of an electric vehicle is described as an example, but the present invention is not limited thereto and may be applied to various types of electronic component packages in which active elements are disposed on a printed circuit board. That is, it can be applied to various electronic components such as a camera module and navigation.

The active element 120 may include a plurality of ports mounted on the printed circuit board 150, and the plurality of ports may include a power port, a data port, and a ground port. The data port may be electrically connected to a plurality of data lines disposed on the printed circuit board 150.

The communication control unit 130 is disposed between the active element 120 and the connector 140, and may be electrically connected to the active element 120 and the connector 140. In addition, the communication control unit 130 may receive a control signal transmitted from the connector 140 and transmit it to a control module (not shown) in the electric vehicle.

In addition, the communication control unit 130 may include a plurality of communication chips. For example, the communication control unit 130 may include a first chip to a third chip (not shown). The first chip may receive a control pilot (CP) signal, which is a control pilot, from the EVSE 20 through the connector 140, and the second chip may transmit a control signal to the third chip. In addition, the third chip may receive a proximity detection signal (PD described above), a rapid charging signal, and a control signal from the third chip from the aforementioned charging control module. Also, the third chip may control on or off of the second chip.

Here, the communication control unit 130 may be a PCL control unit in an electric vehicle. In addition, the first to third chips described above are electrically connected to each other to transmit and receive signals. For example, a SPI (Serial Peripheral Interface) communication method may be used, but is not limited thereto.

The connector 140 is disposed between the EVSE 20 and the electric vehicle, and may be a passage providing an electrical connection between the EVSE 20 and the electric vehicle. That is, the electric vehicle may be charged by receiving power from the EVSE 20 through the connector 140. The connector 140 may be electrically connected to the battery 13 (see FIG. 3) in the electric vehicle and the communication control unit 130.

The connector 140 may be electrically connected to the communication control unit 130 through a plurality of connection lines. The plurality of connection lines may include four connection lines. For example, the first to fourth lines may be included.

Referring to FIG. 5, the first line L1 is a line to which power for charging is supplied, the second line L2 is a PE (Protective Eart) ground line, and the third line L3 is controlled. The signal line is a signal line to be transmitted, and the fourth line L4 is a line for ground.

The printed circuit board 150 may be a resin-based circuit board. For example, the printed circuit board 150 may include a metal core PCB, a flexible PCB, a ceramic PCB, and an FR-4 substrate. The printed circuit board 150 may be formed of a plurality of layers. 8 will be described in detail.

More specifically, the second line L2 is a line connected to the ground of the EVSE 20, and the fourth line L4 is a line connected to the ground on the printed circuit board 150 in the electric vehicle. For example, the fourth line L4 may be connected to the ground of the communication control unit 130 in common. The second line L2 is electrically connected to the fourth line L4, but may be electrically separated from the ground of the active element 120.

In addition, noise may be reduced in a signal applied through the first line L1 and the third line L3 by the second line L2. Thus, the printed circuit board according to the embodiment provides improved effects to EMI and EMS.

Referring to FIG. 6, the direction from the communication control unit 130 toward the connector 140 is described as a first direction D1, and the direction from the connector 140 toward the communication control unit 130 is described as a second direction D2. do.

In addition, the first line L1 to the fourth line L4 may be sequentially arranged. First, the first line L1 to the fourth line L4 may be disposed between the communication control unit 130 and the connector 140 as described above. In addition, the first line L1 to the fourth line L4 may be disposed on the printed circuit board 150. In an embodiment, the second line L2 may be disposed between the first line L1 and the third line L3. With this configuration, the direction of the electromagnetic field with respect to the signal flowing through the first line L1 and the third line L3 can be canceled.

More specifically, the power signal and the control signal through the first line L1 and the third line L3 may move in the second direction D2. At this time, since the second line L2 and the fourth line L4 are ground lines, the power signal moving through the first line L1 is connected to the ground of the EVSE 20 connected to the second line L2. You can. Also, the control signal through the third line L3 may be connected to the ground connected to the fourth line L4.

That is, one signal path may be formed in the first line L1 and the second line L2, and another signal path may be formed in the third line L3 and the fourth line L4. At this time, a plurality of signal paths may be separated according to the second line L2 connected to the ground of the EVSE 20. As a result, since the offset of the electric field and the electric field between the path of the one signal and the path of the other signal exists in some regions, an effect of removing noise due to radiation may occur.

In addition, the power signal and the control signal are signals introduced from the external EVSE 20. At this time, the power signal and the control signal are bypassed to the ground of the EVSE 20, so that external conduction / radiation noise can be reduced. That is, noise of the control signal to the communication control unit 130 is reduced, and deterioration is prevented from radiation noise.

5 and 7, the filter unit F may be additionally disposed on the fourth line L4. The filter unit F may remove noise from the signal. For example, the filter unit F may include a resistor element and a capacitor. As an example, the filter unit F may pass the input at a low frequency and cut off the input at a high frequency. That is, the input of the AC part other than the DC part can be filtered from the power supply. Thereby, it is possible to improve AC noise caused by the loop. At this time, the cutoff frequency according to the device may be controlled by the resistance value of the resistance element and the capacitance of the capacitance. This is shown in Equation 1 below.

Here, ω _c is the cutoff frequency (in radians), f _c is the cutoff frequency (in hertz), R = resistance value, and C = capacitance.

In addition, the filter unit F may change the impedance through the above-described resistance value of the resistance element and the capacitance of the capacitor, and bypass the noise signal as a ground, thereby providing EMC (Electro Magnetic Compatibility) improvement.

Referring to FIG. 4 again, a data circuit disposed between the communication control unit 130 and the active element 120 through the third line L3 may be additionally disposed with a protection circuit (not shown) including an electric element. have. For example, a protection circuit (not shown) may protect the active element 120 when an overcurrent is applied to the third line.

For example, the protection circuit (not shown) may include an inductor and a resistance element connected in series. The resistive element serves to match the impedance of the transmission line, and the inductor can serve to correct for overshoot or undershoot caused by overcurrent.

At this time, the inductor may be relatively disposed adjacent to the communication control unit 130, and the resistance element may be disposed close to the active element 120. Since the inductor has a larger capacity than a resistive element, it can be advantageously disposed at the input terminal to prevent data corruption. In addition, when the inductor is disposed closer to the communication control unit 130, the peak overcurrent may be corrected to transmit and receive a signal having a clean waveform (close to the signal circle).

In addition, when impedance matching is performed, the protection circuit (not shown) may improve noise and signal distortion of the data signal. That is, the protection circuit (not shown) may be designed by reflecting the impedance of the inductive reactance and the capacitive reactance according to the circuit design. In addition, it can be designed in consideration of the frequency of the incoming current and the number of data clocks.

However, the present invention is not limited thereto, and the protection circuit (not shown) is not limited as long as it is configured to match the impedance of the transmission line and correct the distorted signal.

In addition, the charging control module according to an embodiment may further include a chassis case 160. The chassis case 160 may be electrically connected to the ground of the printed circuit board 150. Through this, the overcurrent applied to the device on the printed circuit board 150 is easily discharged through the chassis case 160, so that even when an overvoltage or overcurrent is applied or generated to the device, the device can be easily protected.

8 is a cross-sectional view of a printed circuit board according to an embodiment, and FIG. 9 is a modification of FIG. 8.

First, referring to FIG. 8, the printed circuit board 150 may be formed of a plurality of layers, and the first line L1 to the fourth line L4 may be sequentially connected to the plurality of layers.

The printed circuit board 150 is electrically connected to the first line L1 to provide power, a first layer 153 to provide power, and a first ground layer 154 to be electrically connected to the fourth line L4 to form a ground. , A second layer 158 electrically connected to the third line L3 to provide a control signal, a second ground layer 155 electrically connected to the second line L2 and connected to EVSE ground, the first The insulating layer 152 is disposed between the layer 153, the first ground layer 154, the second layer 158, and the second ground layer 155, and is electrically connected to each line of each layer and the upper insulating layer. The first through-electrode 156 may include a second through-electrode 157 connecting the shield surrounding the communication control unit 130 and the first ground layer 154.

First, the printed circuit board 150 may include a resin-based metal core PCB, a flexible PCB, a ceramic PCB, and an FR-4 substrate as described above.

Since the second layer 158 generates high frequency noise, it may be disposed under the first ground layer 154 to minimize radiation. Accordingly, the first ground layer 154 may serve as a shield shielding noise emitted from the second layer 158.

Since the first layer 153 generates low-frequency noise, it may be disposed on the first ground layer 154. The first ground layer 154 may be disposed between the first layer 153 and the second layer 158.

However, the arrangement of each layer is not necessarily limited thereto and may be variously modified. The first layer 153 may be composed of a plurality of layers according to the design of the circuit pattern. A surface layer on which the IC chip is mounted may be further disposed on the first layer 153.

The first ground layer 154 may be electrically connected to the fourth line as described above. That is, the ground of the active element 120 may be electrically connected to the first ground layer 154. In addition, the first ground layer 154 may be electrically connected to a shield SH disposed to surround the outside of the communication control unit 130. In an embodiment, the shield SH may be connected through the second through electrode 157. By this configuration, the EMI control of the communication control unit 130 may be improved. At this time, the second through electrode 157 may be formed in a current dense region having a high current density. According to this configuration, the area on the circuit board where the current density is increased can be quickly discharged by being grounded with the chassis case. In addition, since the chassis case is connected to the body of the electric vehicle, a large ground area can be secured.

In addition, the second ground layer 155 may be disposed in the first layer 153. In addition, an additional insulating material may be disposed between the first layer 153 and the second ground layer 155. Accordingly, the first layer 153 connected to the first line L1 may be disposed adjacent to the second ground layer 155. Conversely, the first ground layer 154 disposed under the first layer 153 may be disposed adjacent to the lower second layer 158. Accordingly, as described in FIG. 6, a signal path may be formed in the ground of the EVSE (connected to the second ground layer 155) and the first ground layer 154, respectively. As a result, since the offset of the electric and electromagnetic fields between the signal paths exists in some regions, a noise removal effect due to radiation may occur.

The insulating layer 152 may be disposed between the first layer 153, the first ground layer 154, the second layer 158, and the second ground layer 155. Accordingly, electrical insulation between the first layer 153, the first ground layer 154, the second layer 158, and the second ground layer 155 can be provided.

In this case, the active element 120, the communication control unit 130, the shield SH, and other elements € may be disposed on the upper insulating layer 152. And, the insulating layer 152, the first ground layer 154, the second layer 158 and the second electrically connected to the ground layer 155 pattern (first line (L1) to fourth line (L4 described above) )) Can be arranged.

The first through electrode 156 penetrates the insulating layer 152 so that the first layer 153, the second layer 158, the first ground layer 154, and the second ground layer 155 are respectively described above. An electrical connection may be provided between the first line L1 to the fourth line L4. Accordingly, the first through electrode 156 may provide an electrical path in the above-described pattern of the upper insulating layer 152 in each layer.

Also, the first through electrode 156 may be electrically connected to the chassis ground (not shown). The through electrode 156 includes a plurality of first through electrodes 156a connecting the first layer 153 and the chassis ground (not shown), and the first ground layer 154 and the chassis ground (not shown). A plurality of second through electrodes 156b to be connected may be included.

In addition, the first ground layer 154 may further include a chassis ground electrically connected to the chassis case described above. The chassis ground (not shown) is electrically connected to the body of the electric vehicle to secure a stable ground area.

In an embodiment, when the overcurrent is applied, the area where the current is concentrated is connected to the chassis ground (not shown) and the rest is connected to the first ground layer 154 to prevent damage to the active device when the overcurrent is applied.

Referring to FIG. 8, as in FIG. 7, the printed circuit board 150 is electrically connected to the first line L1 and electrically connected to the first layer 153 and the fourth line L4 providing power. The first ground layer 154 forming the ground, the second layer 158 electrically connected to the third line L3 to provide a control signal, and the second line L2 electrically connected to the EVSE ground to be connected The second ground layer 155, the first layer 153, the first ground layer 154, the second layer 158 and the second insulating layer 155 disposed between the insulating layer 152 and each layer and the top It may include a first through-electrode 156 to electrically connect to each line of the insulating layer of the second through-electrode 157 connecting the shield surrounding the communication control unit 130 and the first ground layer 154. have. In addition, the first layer 153, the second ground layer 155, the first ground layer 154, and the second layer 158 may be symmetrically disposed based on the lowest insulating layer.

That is, the first layer 153, the second ground layer 155, the first ground layer 154, and the second layer 158 may be formed of a plurality of layers, as described above, when the plurality of layers It can be made symmetrically with respect to the lowest layer. With this configuration, the offset of the electromagnetic field generated along the signal path can be further increased. Thereby, the effect of removing noise by radiation can be further improved.

10 is a graph illustrating an effect of a charging control module according to an embodiment, and FIG. 11 is a view showing an electromagnetic wave state of the charging control module according to an embodiment.

Referring to FIG. 10, L1a is the signal of the first line in the charging control module according to the embodiment, and L1b is the signal of the first line when there is no line connected to the ground of EVSE. Thus, L1a compared to L1b is radiated It shows the state that the noise caused by is removed. Accordingly, it can be seen that the electromagnetic wave is canceled through the charging control module according to an embodiment to easily remove noise caused by radiation.

Similarly, referring to FIG. 11, in the case of (a), the charging control module is not connected to the ground of EVSE through the connector, and in the case of (b) the charging control module is connected to the ground of EVSE through the connector. In (a), the electromagnetic wave generated in the region E1 adjacent to the charge control module is shown in (b) to have a larger intensity and a wider region than the electromagnetic wave generated in the region E2 adjacent to the charge control module. Accordingly, it can be seen that the electromagnetic wave is canceled through the charging control module according to an embodiment, thereby reducing noise due to radiation.

Claims (10)

Printed circuit boards;
A connector disposed on the printed circuit board and electrically connected to a charging facility;
A communication control unit electrically connected to the connector;
An active element electrically connected to the communication control unit; And
It includes a plurality of lines disposed between the connector and the communication control unit,
The plurality of lines is a charging control module including a line electrically connected to the ground of the charging facility through the connector.
According to claim 1,
The plurality of lines,
A first line to which power is supplied from the charging facility;
A second line electrically connected to the ground of the charging facility;
A third line through which a control signal for controlling the communication control unit moves; And
Charge control module comprising a; fourth line connected to the ground of the printed circuit board.
According to claim 2,
A charging control module in which a filter unit including a resistor element and a capacitor is disposed on the fourth line.
According to claim 2,
The second line is a charging control module disposed between the first line and the third line.
According to claim 2,
The printed circuit board,
A first layer connected to the first line;
A second layer connected to the third line;
A first ground layer connected to the fourth line; And
Charge control module comprising a; second ground layer connected to the second line.
The method of claim 5,
The first layer is disposed on the first ground layer,
The first ground layer is a charging control module disposed on the second layer.
The method of claim 5,
The charging control module further includes an insulating layer disposed between the first layer, the second layer, the first ground layer, and the second ground layer.
The method of claim 5,
Further comprising a shield disposed to surround the communication control unit,
The shield is a charge control module that is electrically connected to the first ground layer.
The method of claim 5,
Charge control module further comprises a chassis case that is electrically connected to the printed circuit board.
battery; And
Includes; a charge control module for controlling to supply power to the battery;
The charging control module,
Printed circuit boards;
A connector disposed on the printed circuit board and electrically connected to a charging facility;
A communication control unit electrically connected to the connector;
An active element electrically connected to the communication control unit; And
It includes a plurality of lines disposed between the connector and the communication control unit,
The plurality of lines is an electronic component package including a line that is electrically connected to the ground of the charging facility through the connector.

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