Byd Company Limited

Shenzhen Byd Auto R&d Company Limited

Qinyao Yang

Wei Feng

Yaochuan Han

Wenhui Xu

Wenjin Xia

Shibin Ma

Xianyin Li

Liang Chen

Gang Chen

Zhengdong Wu

Chengyu Lan

A driving circuit for an IGBT module is provided. The driving circuit includes: a gate driving resistor connected with the IGBT module; a driving module connected with the gate driving resistor; an integrating circuit connected with the driving module, in which the integrating circuit comprises an equivalent resistor and a first capacitor connected in series with the equivalent resistor, and a time constant of the integrating circuit is adjusted by changing a resistance of the equivalent resistor; a first optical coupler connected with the integrating circuit; and a micro control unit, connected with the first optical coupler. The disclosed driving circuit for an IGBT module can adjust an equivalent resistance of the gate driving resistor, thus driving the IGBT module working at different powers without replacing the gate driving resistor, and improving an operation state of the IGBT module.

Driving circuit for IGBT module

An electric vehicle running control system is provided. The electric vehicle running control system comprises a heating circuit coupled with an in-vehicle battery and configured to heat the in-vehicle battery. The vehicle running control system further comprises a load capacitor and a first current storage element. The first current storage element may be coupled with the load capacitor and the heating circuit respectively configured to reduce interference between the heating circuit and the load capacitor.

Electric vehicle running control system

Certain embodiments of the present invention disclose a battery heating circuit, wherein: the battery comprises a battery Eand a battery E. For example, the heating circuit comprises: a first charging/discharging circuit, which is connected with the battery E, and comprises a damping component R, a current storage component L, a first switch unitand a charge storage component C, all of which are connected in series to each other; and a second charging/discharging circuit, which is connected to the battery E, and comprises a damping component R, a current storage component L, a second switch unitand the charge storage component C, all of which are connected in series with each other.

Battery heating circuits and methods using resonance components in series based on charge balancing

A circuit for heating a battery includes the battery including parasitic damping and current storage components, a switch unit, a switching control component coupled to the switch unit, a charge storage component, and a current limiting circuit. The damping component, current storage component, switch unit, and charge storage component are connected. The switching control component is configured to turn on and off the switch unit so as to control a first current flowing from the battery to the first charge storage component and a second current flowing from the first charge storage component to the battery. The current limiting circuit is configured to limit the second current flowing from the charge storage component to the battery. The circuit for heating the battery is configured to heat the battery by at least discharging and charging the battery.

Battery heating circuits and methods based on battery discharging and charging using resonance components in series and current limiting components

Certain embodiments of the present invention provide a battery heating circuit, wherein: the battery comprises a first battery Eand a second battery E, the heating circuit comprises a first switch unit, a second switch unit, a damping component R, a damping component R, a current storage component L, a current storage component L, a switching control moduleand a charge storage component C; the first battery, the damping component R, the current storage component L, the first switch unitand the charge storage component C are connected in series to form a first charging/discharging circuit; the second battery, the damping component R, the current storage component L, the charge storage component C and the second switch unitare connected in series to form a second charging/discharging circuit.

Circuits and methods for heating batteries in series using resonance components in series

According to certain embodiments, a battery heating circuit is provided, comprising a first switch unit, a second switch unit, a third switch unit, a fourth switch unit, a switching control module, a damping component R, a current storage component L, and a charge storage component C; the damping component Rand the current storage component Lare configured to connect with the battery in series to form a branch; the first switch unitand the second switch unitare connected in series with each other and then connected in parallel with the branch; the third switch unitand the fourth switch unitare connected in series with each other and then connected in parallel with the branch.

Battery heating circuits and methods using resonance components in series and bridging charge storage components

An electric vehicle running control system is provided. The electric vehicle running control system comprises: a heating circuit (); a load capacitor (C); a switchgear () connected with the heating circuit () and the load capacitor (C) respectively; and a switch control module () connected with the switchgear () for controlling the switchgear () to switch off when the heating circuit () is connected with an in-vehicle battery () to form a heating loop for heating the in-vehicle battery ().

Certain embodiments of the present invention provide a battery heating circuit, comprising a plurality of switch units, a switching control module, a damping component R, an energy storage circuit, and a polarity inversion unit, wherein: the energy storage circuit is connected with the battery, and comprises a current storage component Land a plurality of charge storage components C; the plurality of charge storage components Care connected with the plurality of switch unitsin series in one-to-one correspondence to form a plurality of branches; the plurality of branches is connected in parallel with each other and then connected with the current storage component Land damping component Rin series; the switching control moduleis connected with the switch units, and is configured to control ON/OFF of the switch units

Battery heating circuits and methods based on battery discharging and charging using resonance components in series and multiple charge storage components

According to certain embodiments, a battery heating circuit is provided, comprising a switch unit, a switching control module, a damping component R, and an energy storage circuit; the energy storage circuit is configured to be connected with the battery and comprises a current storage component Land a charge storage component C; the damping component R, the switch unit, the current storage component L, and the charge storage component Care connected in series; the switching control moduleis connected with the switch unit, and is configured to control ON/OFF of the switch unit, so as to control energy flowing from the battery to the energy storage circuit only. For example, the heating circuit provided in the present invention can improve the charge/discharge performance of the battery, and improve safety when the battery is heated.

Battery heating circuits and methods based on battery discharging using resonance components in series

Under one aspect, a circuit for heating a battery includes the battery including a parasitic damping component and a parasitic current storage component, a switch unit, a switching control component coupled to the switch unit, and a charge storage component. The charge storage and current storage components are at least parts of an energy storage circuit. The damping component, the current storage component, the switch unit, and the charge storage component are connected to form at least a part of a loop. The switching control component is configured to turn on and off the switch unit so as to control a current flowing from the battery to the charge storage component and flowing from the charge storage component to the battery. The circuit for heating the battery is configured to heat the battery by at least discharging and charging the battery.

Battery heating circuits and methods based on battery discharging and charging using resonance components in series

Under one aspect, a heating circuit for a battery includes a plurality of switch units, a switching control module, a damping component, an energy storage circuit, and a polarity inversion unit. The energy storage circuit is connected with the battery, and includes a current storage component and a plurality of charge storage components that respectively are connected with the plurality of switch units in series to form a plurality of branches that are connected in parallel with each other and in series with the current storage and damping components. The switching control module controls switching on and off of the switch units, so that energy flows back-and-forth between the battery and the energy storage circuit when the switch units switch on. The polarity inversion unit is connected with the energy storage circuit inverts a voltage polarity of the plurality of charge storage components after the switch units switch off.

Under one aspect, a heating circuit for at least a first battery and a second battery includes a first charging/discharging circuit, which is connected to the first battery, and a second charging/discharging circuit, which is connected to the second battery. The first charging/discharging circuit includes a first damping component, a first current storage component, a first switch unit, and a charge storage component, all of which are connected in a first loop with each other. The second charging/discharging circuit includes a second damping component, a second current storage component, a second switch unit, and the charge storage component, all of which are connected in a second loop with each other.

Under one aspect, a battery heating circuit includes damping and current storage components connected with the battery to form a first part of a first loop. First and second switch units are connected with the first part of the first loop. Third and fourth switch units are connected with the first part of the first loop to form a second loop. A charge storage component is connected across the first and second loops. The first and third switch units and charge storage component form branches transferring energy between the battery and charge storage component, and the fourth and second switch units and charge storage component form branches transferring energy between the battery and charge storage component. The switching control module switches on and off the first through fourth switch units to control energy flow between the battery and charge storage component.

Battery heating circuits and methods using resonance components in series and bridge charge storage components

Certain embodiments of the present invention provide a battery heating circuit, wherein: the battery comprises a first battery and a second battery; the heating circuit comprises a first switch unit, a second switch unit, a damping component R, a damping component R, a current storage component L, a current storage component L, a switching control module and an energy storage component V; the first battery, the damping component R, the current storage component L, the energy storage component Vand the first switch unit are connected in series to constitute a first charging/discharging circuit; the second battery, the damping component R, the current storage component L, the energy storage component Vand the second switch unit are connected in series to constitute a second charging/discharging circuit.

Circuits and methods for heating batteries in parallel using resonance components in series

Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit, a switching control module, a one-way semiconductor component D, a damping component R, and a transformer T, wherein: the switching control moduleis electrically connected with the switch unit; the battery, the damping component R, the first winding of the transformer T, and the switch unitare connected in series with each other to constitute a battery discharging circuit; the battery, the damping component R, the second winding of the transformer T, and the one-way semiconductor component Dare connected in series with each other to constitute a battery charging circuit. The transformer in certain embodiments of the present invention serves as an energy storage component, and has a current limiting function.

Growing community of inventors

Shenzhen, China

Qinyao Yang