An electronic driver board with a backup power supply circuit in electric vehicles
The electronic driver board with a backup power supply circuit addresses the need for reliable power during voltage drops by using a custom transformer and control unit to maintain inverter operation, ensuring safe motor shutdown without optical isolators.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- TURKIYENIN OTOMOBILI GIRISIM GRUBU SANAYI & TICARET ANONIM SIRKETI
- Filing Date
- 2025-12-15
- Publication Date
- 2026-06-18
AI Technical Summary
Existing electric vehicle systems lack a reliable backup power supply circuit to ensure the inverter motherboard operates safely during voltage drops or cable breaks, and there is a need for a system that can generate power within a wide voltage range from the high-voltage battery.
An electronic driver board with a backup power supply circuit, comprising a custom design transformer and analog control unit, which switches to safe mode during interruptions and provides power across a wide input voltage range, eliminating the need for optical isolators.
Ensures the inverter motherboard continues to function safely by generating necessary power, even during voltage fluctuations, without requiring optical isolators, thus ensuring safe motor shutdown.
Smart Images
Figure TR2025051677_18062026_PF_FP_ABST
Abstract
Description
[0001] DESCRIPTION
[0002] AN ELECTRONIC DRIVER BOARD WITH A BACKUP POWER SUPPLY CIRCUIT IN ELECTRIC VEHICLES
[0003] Technical Field
[0004] The present invention relates to an electronic driver board with a backup power supply, which enables the inverter motherboard to keep running in order to safely stop the electric motor in electric vehicles.
[0005] Background of the Invention
[0006] In electric vehicles, energy stored as DC (direct current) must be converted into AC (alternating current) in order to drive the electric motor. This conversion is achieved by DC-AC converters (inverters). The inverter must be supplied with a power supply that produces a voltage between 9- 16V in order for the components on its motherboard to operate at full performance. In electric vehicles, batteries are used as a low voltage power supply. In the event that the voltage value of the battery drops or the cable between the battery and the inverter breaks, the inverter requires a backup power supply circuit in order to safely stop the electric motor. At the same time, in the event of a vehicle being towed, energy is stored in the DC Link capacitor, and the voltage of the capacitor rises. In order for this voltage value not to exceed 60, a backup power supply circuit is used. The backup power supply circuit enables the inverter motherboard to keep running by generating 8V from the high-voltage battery of the car. The voltage value of the high-voltage battery has a very wide range (50-535V). It is very important that the backup power supply circuit can operate within this range.
[0007] For this reason, considering the studies and deficiencies in the current technique, it is understood that there is a need for an electronic driver board with a backup power supply, which enables the inverter motherboard to keep running by generating current from the high-voltage battery of the electric motor in the vehicle.
[0008] The Japanese patent document no. JPH09168208A, an application included in the state of the art, discloses a system configured with the aim of preventing current leakage in vehicles. The invention discloses a system configured to prevent current leakage between a vehicle mounted apparatus and a vehicle body frame. The solution comprises an internal conductor switch operated by converting the output voltage into power from a resonant circuit; an output voltage is generated by means of converting the input voltage into a pulse train of half-waves of the resonant voltage. The charging device consists of a power converter, an insulating transformer and a rectifying / smoothing circuit. The power converter acts as a single-phase inverter that converts the output voltage from a resonant circuit into a pulse train of half-waves with a predetermined number of pulses. The insulating transformer insulates the input and output sides while reducing the output voltage in order to charge the auxiliary battery. The rectifying / smoothing circuit comprises a rectifier and a DC output smoothing filter. A resonant voltage from a single resonant circuit generates a predetermined resonant voltage pulse train by powering the converters.
[0009] Summary of the Invention
[0010] An object of the present invention is to realize an electronic driver board with a backup power supply, which enables the inverter motherboard to keep running in order to safely stop the electric motor in electric vehicles.
[0011] Detailed Description of the Invention
[0012] “An Electronic Driver Board with a Backup Power Supply Circuit in Electric Vehicles” realized to fulfil the objective of the present invention is shown in the figure attached, in which: Figure 1 is a view of the inventive electronic driver board.
[0013] The components illustrated in the figure are individually numbered, where the numbers refer to the following:
[0014] 1. Electronic driver board
[0015] 2. Transformer
[0016] 3. Analog control unit
[0017] 4. Backup power supply circuit
[0018] An electronic driver board (1) with a backup power supply, which enables the inverter motherboard to keep running in order to safely stop the electric motor in electric vehicles comprises at least one transformer (2) which changes the voltage level of electrical energy, enables the transfer of electrical energy by electromagnetic induction, provides protection in a wide input supply range and has at least three windings; at least one analog control unit (3) which has control IC and filter elements; and at least one backup power supply circuit (4) which has at least one transformer (2) and at least one analog control unit (3) and enables the board to switch to safe mode by meeting its power needs by being activated when there is an interruption on the 12V supply line leading to the electronic driver board (1).
[0019] The inventive electronic driver board (1) is located inside the inverter unit in the vehicle. The backup power supply circuit (4) included in the said electronic driver board (1) is configured to enable the board to switch to safe mode by meeting its power needs by being activated when there is an interruption on the 12V supply line leading to the electronic driver board (1). The backup power supply circuit (4) consists of a custom design transformer (2) and the analog control unit (3). The analog control unit (3) included in the backup power supply circuit (4) has control IC and filter elements. The backup power supply circuit (4) is configured to provide protection in a wide input supply range by means of the custom design transformer (2) thereof. The custom design transformer (2) eliminates the need for the optical isolator for feedback by means of the auxiliary winding thereof.
[0020] Industrial Application of the Invention By means of the electronic driver board ( 1 ) and the backup power supply circuit (4) located thereon, the need for opto-coupler (optical isolator) used in the circuits is eliminated and the same output power is provided at both low and high input voltages. Within these basic concepts; it is possible to develop various embodiments of the inventive “An Electronic Driver Board (1) with a Backup Power Supply Circuit in Electric Vehicles”; the invention cannot be limited to examples disclosed herein and it is essentially according to claims.
Claims
CLAIMS1. An electronic driver board (1) with a backup power supply, which enables the inverter motherboard to keep running in order to safely stop the electric motor in electric vehicles; characterized by at least one transformer (2) which changes the voltage level of electrical energy, enables the transfer of electrical energy by electromagnetic induction, provides protection in a wide input supply range and has at least three windings; at least one analog control unit (3) which has control IC and filter elements; and at least one backup power supply circuit (4) which has at least one transformer (2) and at least one analog control unit (3) and enables the board to switch to safe mode by meeting its power needs by being activated when there is an interruption on the 12V supply line leading to the electronic driver board (1).
2. An electronic driver board (1) according to Claim 1, which is located inside the inverter unit in the vehicle.
3. An electronic driver board (1) according to Claim 1 or 2; characterized by the backup power supply circuit (4) which is configured to enable the board to switch to safe mode by meeting its power needs by being activated when there is an interruption on the 12V supply line leading to the electronic driver board (1).
4. An electronic driver board (1) according to any one of the preceding claims; characterized by the backup power supply circuit (4) which consists of a custom design transformer (2) and the analog control unit (3).
5. An electronic driver board (1) according to any one of the preceding claims; characterized by the backup power supply circuit (4) which is configured toprovide protection in a wide input supply range by means of the custom design transformer (2) thereof.
6. An electronic driver board (1) according to any one of the preceding claims; characterized by the analog control unit (3) which has control IC and fdter elements.
7. An electronic driver board (1) according to any one of the preceding claims; characterized by the custom design transformer (2) which eliminates the need for the optical isolator for feedback by means of the auxiliary winding thereof.