Byd Company Limited

Shenzhen Byd Auto R&d Company Limited

Wenjin Xia

Wei Feng

Qinyao Yang

Yaochuan Han

Wenhui Xu

Shibin Ma

Xianyin Li

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

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.

Battery heating circuits and methods using transformers

Circuit and method for heating a battery. The circuit includes the battery including a first damping component and a first current storage component, a switch unit, a switching control component, a first charge storage component, and an energy superposition unit. The switching control component is configured to turn on the switch unit so as to allow a current to flow between the battery and the first charge storage component and to turn off the switch unit so as to stop the current. The energy superposition unit is configured to, after the switch unit is turned on and then turned off, adjust a storage voltage associated with the first charge storage component so that a positive voltage terminal of the first charge storage component is coupled, directly or indirectly, to a negative voltage terminal of the battery.

Battery heating circuits and methods with resonance components in series using voltage inversion

Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit, a switching control module, a damping component R, an energy storage circuit, and an energy superposition unit; the energy storage circuit is configured to connect with the battery to form a loop, 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 the energy flowing between the battery and the energy storage circuit.

Battery heating circuits and methods using voltage inversion based on predetermined conditions

A circuit for heating a battery includes a switch unit, control module, damping component, energy storage circuit, and superposition unit. The energy storage circuit forms a loop with the battery, and includes current and charge storage components. The damping component, switch unit, current storage component, and charge storage component connect in series. The control module switches on the switch unit so current flows between the battery and energy storage circuit and switches off the switch unit to stop current flow. The superposition unit superposes energy in the energy storage circuit with energy in the battery after the switch unit switches on and off. The control module switches the switch unit off after the first positive half cycle of current flow through the switch unit after the switch unit switches on. Voltage applied to the switch unit when the switch unit switches off is lower than the switch unit's voltage rating.

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Shenzhen, China

Wenjin Xia