CN219236786U

CN219236786U - New energy automobile upgrades direct current and fills system soon

Info

Publication number: CN219236786U
Application number: CN202320227962.5U
Authority: CN
Inventors: 罗银春
Original assignee: Shenzhen Chunbairong Industrial Co ltd
Current assignee: Shenzhen Chunbairong Industrial Co ltd
Priority date: 2023-02-16
Filing date: 2023-02-16
Publication date: 2023-06-23
Anticipated expiration: 2033-02-16

Abstract

The utility model relates to the technical field of automobile direct current charging systems, in particular to a new energy automobile upgrading direct current quick charging system which comprises a connecting circuit, a control circuit, a switching circuit and a plug-in circuit, wherein the output end of the connecting circuit is connected with the input end of the control circuit and the input end of the switching circuit, and the output end of the switching circuit is connected with the output end of the control circuit and the input end of the plug-in circuit; according to the new energy automobile upgrading direct current quick charging system, the transient suppression diode TVS is added between the connecting circuit and the control circuit, so that a chip and a switching field effect Q1 in the data line interface circuit can be effectively protected from being damaged by surge pulses.

Description

New energy automobile upgrades direct current and fills system soon

Technical Field

The utility model relates to the technical field of automobile direct current charging systems, in particular to a new energy automobile upgrading direct current quick charging system.

Background

The new energy automobile is an automobile which adopts unconventional automobile fuel as a power source (or adopts conventional automobile fuel and a novel automobile-mounted power device) and integrates the advanced technology in the aspects of power control and driving of the automobile, and the formed technical principle is advanced, and the automobile has a new technology and a new structure.

The existing new energy automobile is provided with an alternating-current charging system in a factory, 220VAC is fed into an automobile end through a 7-hole charging interface by an alternating-current charging pile, and then the automobile battery is charged through rectification and boosting of a vehicle-mounted alternating-current charger circuit.

Because the alternating current charging system can only support 3 kilowatt of power, the automobile charging time is about 8 minutes, the shortage of the resources of the charging pile field is caused by the shortage of parking spaces, and the slow charging brings a plurality of inconveniences to the fast-paced urban life. Such vehicles lack a quicker and safer quick-charging mode, so that new energy electric vehicles fall into a situation of difficult charging.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model aims to provide the new energy automobile upgrading direct current quick charging system, which introduces the direct current of the direct current charging pile into an automobile and rapidly charges a battery through an automobile kinetic energy recovery system, thereby achieving the effects of improving the charging speed, saving time and creating value.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a new energy automobile upgrades direct current fast charge system, includes connecting circuit, control circuit, switch circuit and grafting circuit, control circuit's input and switch circuit's input are connected to connecting circuit's output, control circuit's output and grafting circuit's input are connected to switch circuit's output, connecting circuit includes link J1, control circuit includes control chip U3, switch circuit includes field effect transistor Q1, grafting circuit includes the grafting end J2 that is used for grafting electronic equipment, link J1 includes power supply terminal VCC and ground terminal GND, power supply terminal VCC is connected with first resistance R1, first resistance R1 is connected with control chip U3, control chip U3 connects field effect transistor Q1's grid, field effect transistor Q1's source connection power supply terminal VCC, and field effect transistor Q1's drain electrode connection grafting end J2.

Preferably, the connection circuit further includes a transient suppression diode TVS connected to the power supply terminal VCC and the ground terminal GND.

Preferably, the control circuit further includes a capacitor C2, one end of the capacitor C2 is connected to a ground pin of the main control chip U3, and the other end of the capacitor C2 is grounded.

Preferably, the switching circuit further includes a capacitor C3, a resistor R2, and a capacitor C4, where the capacitor C3 and the resistor R2 are connected in parallel between the source and the drain of the fet Q1, and the capacitor C4 is connected in parallel between the gate and the source of the fet Q1.

Preferably, the resistor R2 is a bias resistor.

Advantageous effects

Compared with the known public technology, the technical scheme provided by the utility model has the following beneficial effects:

according to the new energy automobile upgrading direct current quick charging system, the transient suppression diode TVS is added between the connecting circuit and the control circuit, so that a chip and a switching field effect Q1 in the data line interface circuit can be effectively protected from being damaged by surge pulses.

Drawings

Fig. 1 is a circuit diagram of an upgrade direct current quick charging system of a new energy automobile.

The reference numerals in the figures illustrate:

100. a connection circuit; 200. a control circuit; 300. a switching circuit; 400. and plugging the circuit.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model; it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present utility model are within the protection scope of the present utility model.

In the description of the present utility model, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be the communication between the two elements; the specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Examples:

referring to fig. 1, the present utility model provides a new energy vehicle upgrade dc fast charging system, which includes a connection circuit 100, a control circuit 200, a switch circuit 300 and a plug-in circuit 400, wherein an output end of the connection circuit 100 is connected to an input end of the control circuit 200 and an input end of the switch circuit 300, an output end of the switch circuit 300 is connected to an output end of the control circuit 200 and an input end of the plug-in circuit 400, the connection circuit 100 includes a connection end J1, the control circuit 200 includes a control chip U3, the switch circuit 300 includes a field effect transistor Q1, the plug-in circuit 400 includes a plug-in end J2 for plugging in an electronic device, the connection end J1 includes a power terminal VCC and a ground terminal GND, the power terminal VCC is connected to a first resistor R1, the first resistor R1 is connected to the control chip U3, the control chip U3 is connected to a gate of the field effect transistor Q1, a source of the field effect transistor Q1 is connected to the power terminal, and a drain of the field effect transistor Q1 is connected to the plug-in end J2.

In this embodiment, when the connection terminal J1 receives the voltage, the main control chip U3 senses the voltage and then sends a control signal to the gate of the field effect transistor Q1, where the field effect transistor Q1 is a P-channel enhanced field effect transistor, and the control signal is at a high level, and the field effect transistor Q1 is turned off. When the electronic equipment is plugged into the plugging end J2, the main control chip U3 receives the feedback signal and then sends a control signal to the grid electrode of the field effect tube Q1, and the control signal is in a low level, so that the field effect tube Q1 is conducted, the circuit from the charging equipment to the electronic equipment is conducted, and the electronic equipment is charged.

When a surge phenomenon occurs in the circuit, the power supply terminal VCC is connected with the ground terminal GND through the transient suppression diode TVS, the transient suppression diode TVS can instantly bear the excessive voltage, the high impedance is changed into the low impedance, the voltage is clamped to the normal level, and the components such as the control chip U3 and the like are effectively protected from being damaged by surge pulses.

It should be noted that, in the present embodiment, the transient suppression diode TVS may be replaced by a diode including, but not limited to, a steady state diode.

In the present utility model, the connection circuit 100 further includes a transient suppression diode TVS, the transient suppression diode TVS is connected with the power supply terminal VCC and the ground terminal GND, the control circuit 200 further includes a capacitor C2, one end of the capacitor C2 is connected with the ground pin of the main control chip U3, the other end of the capacitor C2 is grounded, the switch circuit 300 further includes a capacitor C3, a resistor R2 and a capacitor C4, the capacitor C3 and the resistor R2 are connected in parallel between the source and the drain of the field effect transistor Q1, the capacitor C4 is connected in parallel between the gate and the source of the field effect transistor Q1, and the resistor R2 is a bias resistor.

In this embodiment, the resistor R2 provides a bias voltage for circuit conduction, the capacitor C3 prevents the excessive current from playing a role in protecting the fet Q1, and the capacitor C4 is further connected in parallel between the gate and the source of the fet Q1, which plays a role in anti-interference protection of the fet Q1.

In addition, one end of the capacitor C2 is connected with the grounding pin of the main control chip U3, and the other end of the capacitor C2 is grounded to play a role in filtering.

The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present utility model without departing from the technical content of the present utility model still belong to the protection scope of the technical solution of the present utility model.

Claims

1. The utility model provides a new energy automobile upgrades direct current fast charge system, its characterized in that includes connecting circuit (100), control circuit (200), switch circuit (300) and grafting circuit (400), the input of control circuit (200) and the input of switch circuit (300) are connected to the output of connecting circuit (100), the output of switch circuit (300) connects the output of control circuit (200) and the input of grafting circuit (400), connecting circuit (100) include link J1, control circuit (200) include control chip U3, switch circuit (300) include field effect transistor Q1, grafting circuit (400) include the grafting end J2 that is used for grafting electronic equipment, link J1 includes power supply terminal VCC and ground terminal GND, power supply terminal VCC is connected with first resistance R1, first resistance R1 is connected with control chip U3, the grid of field effect transistor Q1 is connected to control chip U3, the source of field effect transistor Q1 connects power supply terminal VCC, and the grafting end of drain electrode J1.

2. The new energy vehicle upgrade dc fast charging system according to claim 1, wherein said connection circuit (100) further comprises a transient suppression diode TVS, said transient suppression diode TVS being connected with a power supply terminal VCC and a ground terminal GND.

3. The system according to claim 1, wherein the control circuit (200) further comprises a capacitor C2, one end of the capacitor C2 is connected to the ground pin of the main control chip U3, and the other end of the capacitor C2 is grounded.

4. The system of claim 1, wherein the switching circuit (300) further comprises a capacitor C3, a resistor R2, and a capacitor C4, the capacitor C3 and the resistor R2 are connected in parallel between the source and the drain of the fet Q1, and the capacitor C4 is connected in parallel between the gate and the source of the fet Q1.

5. The new energy automobile upgrading direct current quick charging system according to claim 4, wherein the resistor R2 is a bias resistor.