CN211125910U

CN211125910U - Printed circuit board in electric vehicle battery switching system

Info

Publication number: CN211125910U
Application number: CN201922410746.0U
Authority: CN
Inventors: 郭蟾芳; 江帆; 徐庆豪; 井党林
Original assignee: Delphi Electrical Centers Shanghai Co Ltd
Current assignee: Delphi Electrical Centers Shanghai Co Ltd
Priority date: 2019-12-28
Filing date: 2019-12-28
Publication date: 2020-07-28
Anticipated expiration: 2029-12-28

Abstract

The utility model relates to a printed circuit board in an electric vehicle battery switching system, which is used for switching and connecting a main battery (8) or an auxiliary battery (9) of a RTM system (11) of an electric vehicle, and comprises a timer (2), a voltage regulator tube (3), a field effect tube (4) and a voltage detector (5), wherein the main battery (8) is connected with the voltage detector (5), the voltage regulator tube (3) and the RTM system (11) are connected through a first switch diode (D1), the timer (2) is connected to the other end of the voltage regulator tube (3), a voltage detector (5) is connected to one end of the timer (2), a field effect tube (4) is connected to the other end of the timer, the field effect tube (4) is connected with the auxiliary battery (9) through a second switch diode (D2), and the voltage detector (5), the timer (2), the first switch diode (D1) and the field effect tube (4) form a voltage detection loop. Compared with the prior art, the utility model has the advantages of low power dissipation, application scope are wide.

Description

Printed circuit board in electric vehicle battery switching system

Technical Field

The utility model belongs to the technical field of new forms of energy electric automobile battery technique and specifically relates to a printed circuit board in electric motor car battery switched systems is related to.

Background

The original aims of the new energy electric automobile are energy conservation, low carbon, emission reduction and environmental protection, however, in terms of the current form, the battery consumption and the battery pollution caused by the new energy electric automobile can not be avoided, and even exceed the pollution caused by fuel oil automobiles in some aspect. In response to such situations, new energy electric vehicle manufacturers must strictly request their own vehicle power supply. In addition, in order to ensure that the new energy electric automobile is safer and more energy-saving during running, the electric automobile must strictly control the energy consumption of the batteries in the automobile while ensuring the running record of the electric automobile in the whole time period, and the pollution caused by battery replacement is reduced. Therefore, how to reduce energy consumption, even zero consumption, and in extreme cases, ensuring the uninterrupted operation of the driving recorder is a difficult problem to be solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an interior printed circuit board of electric motor car battery switching system in order to overcome the defect that above-mentioned prior art exists.

The purpose of the utility model can be realized through the following technical scheme:

a printed circuit board in an electric vehicle battery switching system is used for switching a main battery or an auxiliary battery of an RTM system connected with an electric vehicle and comprises a timer, a voltage regulator tube, a field effect tube and a voltage detector, wherein the main battery is connected with the voltage detector and is connected with the voltage regulator tube and the RTM system through a first switch diode, the other end of the voltage regulator tube is connected with the timer, one end of the timer is connected with the voltage detector, the other end of the timer is connected with the field effect tube, the field effect tube is connected with the auxiliary battery through a second switch diode, and the voltage detector, the timer, the first switch diode and the field effect tube form a voltage detection loop.

Preferably, the timer is connected with a MOSFET driver, and the MOSFET driver is connected with a field effect transistor.

Preferably, the grid electrode of the field effect transistor is connected with the MOSFET driver, the drain electrode of the field effect transistor is connected with the RTM system, the source electrode of the field effect transistor is connected with the second switching diode, and the second switching diode is connected with the secondary battery through a fuse.

Preferably, the RTM system is connected to a filter.

Preferably, the printed circuit board is further provided with a plurality of input/output ports for connecting the electrical appliances and the power supply or the welding terminals.

Preferably, the timer, the voltage detector and the field effect transistor are soldered on a PCB in a patch manner.

Preferably, the timer adopts a TP L5 x10Q timer.

Preferably, the voltage-stabilizing tube adopts a low-voltage-drop linear voltage stabilizer with the model number TPS7B 82-Q1300 mA.

Preferably, the field effect transistor adopts a VN7050AJTR field effect transistor.

Preferably, the voltage detector adopts a TPS3710-Q1 voltage detector.

Compared with the prior art, the utility model has the advantages of it is following:

the voltage detector, the timer, the first switch diode and the field effect transistor form a voltage detection loop, and the output state of the battery is monitored only through an electronic loop, so that the quiescent current is close to 0, and the aim of reducing the energy consumption of the voltage detector is fulfilled;

after the auxiliary battery works for a period of time, the utility model can cut off the connection with the battery by using the switch diode when the voltage detection loop detects that the voltage is lower than 8v, thereby avoiding the reduction of the service life of the battery after the battery is used for a long time;

the utility model has small size, can be flexibly inserted into various spaces in different vehicle types through the input and output ports, can save energy for the existing vehicle types without redesigning the vehicle body space, and greatly improves the application range;

fourth, the utility model discloses a field effect transistor has replaced the relay commonly used among the prior art, has increased life, has reduced the consumption, and has improved the silence effect.

Drawings

Fig. 1 is a schematic diagram of routing of a printed circuit board in an electric vehicle battery switching system according to an embodiment of the present invention;

fig. 2 is a schematic view of the working principle of the printed circuit board in the battery switching system of the electric vehicle according to the embodiment of the present invention;

the reference numbers in the figures indicate:

1. the circuit comprises an input/output port, 2, a timer, 3, a voltage regulator tube, 4, a field effect tube, 5, a voltage detector, 6, a PCB (printed circuit board), 7, a MOSFET (metal-oxide-semiconductor field effect transistor) driver, 8, a main battery, 9, an auxiliary battery, 10, a fuse, 11, an RTM (resin transfer molding) system, 12, a filter, 13, the fuse, D1, a first switching diode, D2 and a second switching diode.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.

Examples

The utility model relates to a printed circuit board in electric motor car battery switching system for main battery 8 or auxiliary battery 9 to RTM (real time monitoring) system 11 switching power supply, printed circuit board includes input/output port 1, time-recorder 2, stabilivolt 3, field effect transistor 4, voltage detector 5.

Input/output port 1's number is four, and this printed circuit board connects through four input/output port 1 with electrical apparatus and power input/output port 1 can be to joining in marriage the direct hard interference connection of fisheye needle, also can the welded terminal, timer 2 welds on PCB board 6 with the mode of paster, and timer 2 satisfies the different timing demands of customer through the adjustment to the resistance, the utility model discloses a timer 2 adopts TP L5 x10Q timer.

The main battery 8 is connected with the voltage detector 5, and is connected with the voltage regulator tube 3 and the RTM system 11 of the electric automobile through a first switch diode D1, and the RTM system 11 is connected with the filter 12. The voltage detector 5 can detect the voltage change of the battery at any time, and the voltage detector 5 is welded on a PCB in a patch mode and is in the model of TPS 3710-Q1. The main battery 8 is connected to the timer 2 through the voltage detector 5, the timer 2 is connected to the MOSFET driver 7, and the MOSFET driver 7 is connected to the field effect transistor 4. The utility model discloses a stabilivolt 3 adopts low pressure drop linear voltage regulator, and the typical quiescent current of this device when light load is only 2.7 mu A, the standby system in the very suitable automobile application, this device weld on PCB with the paster mode, the model is TPS7B 82-Q1300 mA. The other end of the low dropout linear regulator is connected with a timer 2. The field effect tube 4 is welded on the PCB in a patch mode, and the model is VN7050 AJTR. The grid of the field effect transistor 4 is connected with the MOSFET driver 7, the drain is connected with the RTM system, the source is connected with the second switch diode D2, and the second switch diode D2 is connected with the secondary battery 9 through the fuse 13. The voltage detector 5, the timer 2, the first switching diode D1, and the field effect transistor 4 constitute a voltage detection circuit.

The utility model discloses printed circuit board's theory of operation does:

the utility model discloses printed circuit board is under normal operating conditions, and the main battery supplies power for the RTM system, detects when the main battery voltage is low to below 8v as voltage detection return circuit, switches into the auxiliary battery through the second switch diode and supplies power for the RTM. The time-recorder will calculate the power supply time of the auxiliary battery, according to the utility model relates to a, the power supply time of the auxiliary battery must not exceed 10 minutes.

The utility model discloses only need adopt electronic circuit to monitor battery output state for quiescent current is close to 0, has reached the purpose that reduces self energy consumption. After the auxiliary battery works for a period of time, the utility model discloses can cut off the connection with the battery, avoid the battery to use for a long time and reduce the life-span. The utility model discloses various spaces of cartridge in the motorcycle type of difference that printed circuit board can be nimble through input-output port can be for current motorcycle type is energy-conserving and need not redesign to the automobile body space, and the suitability is wider. The utility model discloses a field effect transistor has replaced the relay commonly used among the prior art, has increased life, silence and reduction power consumption.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A printed circuit board in an electric vehicle battery switching system is used for switching a main battery (8) or an auxiliary battery (9) connected with an RTM system (11) of an electric vehicle, it is characterized by comprising a timer (2), a voltage regulator tube (3), a field effect tube (4) and a voltage detector (5), wherein the main battery (8) is connected with the voltage detector (5), and is connected with a voltage regulator tube (3) and an RTM system (11) through a first switch diode (D1), the other end of the voltage regulator tube (3) is connected with a timer (2), one end of the timer (2) is connected with the voltage detector (5), the other end is connected with the field effect transistor (4), the field effect transistor (4) is connected with the auxiliary battery (9) through a second switch diode (D2), and the voltage detector (5), the timer (2), the first switch diode (D1) and the field effect transistor (4) form a voltage detection loop.

2. The printed circuit board in a battery switching system of an electric vehicle according to claim 1, wherein the timer (2) is connected to a MOSFET driver (7), and the MOSFET driver (7) is connected to the fet (4).

3. The PCB of claim 2, wherein the gate of the FET (4) is connected to the MOSFET driver (7), the drain of the FET (4) is connected to the RTM system (11), the source of the FET (4) is connected to the second switching diode (D2), and the second switching diode (D2) is connected to the secondary battery (9) through the fuse (13).

4. A printed circuit board in a battery switching system of an electric vehicle according to claim 1, wherein the RTM system (11) is connected to a filter (12).

5. The pcb of claim 1, wherein the pcb further has a plurality of input/output ports (1) for connecting electrical devices and power sources or soldering terminals.

6. The printed circuit board in the battery switching system of the electric vehicle as claimed in claim 1, wherein the timer (2), the voltage detector (5) and the field effect transistor (4) are soldered on the PCB in a patch manner.

7. The pcb of claim 2, wherein the timer (2) is a TP L5 x10Q timer.

8. The PCB of claim 1, wherein the stabilivolt (3) is a low dropout linear regulator (TPS 7B 82-Q1300 mA).

9. The PCB of claim 3, wherein the FET (4) is a VN7050AJTR FET.

10. The printed circuit board in the battery switching system of the electric vehicle as claimed in claim 1, wherein the voltage detector (5) is a TPS3710-Q1 voltage detector.