Energy processing device and vehicle

Abstract

The invention relates to an energy processing device and a vehicle. The device comprises a battery, a first boost inductor, a multi-phase first bridge arm, a multi-phase motor winding, an energy storage element and a controller. The first end of each phase motor winding is connected with the midpoint of the corresponding first bridge arm, and the second ends of the phase motor windings are connected together; the first end of each phase of first bridge arm is connected with the first end of the energy storage element, and the second end of each phase of first bridge arm is connected with the second end of the energy storage element and the negative electrode of the battery; the first end of the first boost inductor is connected with the positive electrode of the battery, the second end of the first boost inductor is connected with the midpoint of the first target bridge arm, and the first target bridge arm is any one of the first bridge arms; the controller is connected with the first bridge arm of each phase, and the controller is configured to control the first bridge arm. Therefore, based on control over the first bridge arm, motor driving and boosting are achieved at the same time, and the integration degree of the high-voltage system of the electric vehicle is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle technology, and in particular, to an energy processing device and a vehicle. Background Art

[0002] With the advancement of electrification, higher requirements are placed on the high-voltage system of electric vehicles, especially in the motor and electronic control. In order to match the higher speed, a higher voltage platform is often required to correspond to it.

[0003] In order to increase the voltage level, the cells can be directly stacked in series, which will increase the size of the vehicle and the cost. Alternatively, a boost circuit can be added between the battery and the load to raise the voltage level of the low-voltage battery pack. A typical boost circuit requires at least one phase of boost inductor and boost bridge arm. The addition of a boost circuit will also increase the size of the vehicle and the cost. Summary of the invention

[0004] The purpose of the present disclosure is to provide an energy processing device and a vehicle to improve the integration level of the high-voltage system of an electric vehicle and realize boosting and motor driving at the same time.

[0005] In order to achieve the above-mentioned object, the first aspect of the present disclosure provides an energy processing device, including a battery, a first boost inductor, a multi-phase first bridge arm, a multi-phase motor winding, an energy storage element and a controller;

[0006] The first end of each phase motor winding is connected to the midpoint of the corresponding first bridge arm, and the second end of each phase motor winding is connected in common; the first end of each phase first bridge arm is connected to the first end of the energy storage element, and the second end of each phase first bridge arm is connected to the second end of the energy storage element and the negative electrode of the battery;

[0007] The first end of the first boost inductor is connected to the positive electrode of the battery, and the second end of the first boost inductor is connected to the midpoint of the first target bridge arm, wherein the first target bridge arm is any one of the first bridge arms;

[0008] The controller is connected to the first bridge arm of each phase, and the controller is configured to: control the first bridge arm to achieve voltage boost and motor driving through the first target bridge arm.

[0009] Optionally, the controller is configured to:

[0010] Acquire the voltage across the energy storage element and the duration from the last on / off state switching of the upper bridge arm and the lower bridge arm of the first bridge arm;

[0011] According to the voltage or the duration, the switching of the on-off state of the upper bridge arm and the lower bridge arm of the first bridge arm is controlled.

[0012] Optionally, the controller is configured to:

[0013] In response to determining that the voltage or the duration satisfies a first preset condition, controlling the lower bridge arm of the first target bridge arm to be turned on and the upper bridge arm to be turned off, so that the battery charges the first boost inductor and the energy storage element releases energy to the motor winding;

[0014] In response to determining that the voltage or the duration satisfies a second preset condition, the lower bridge arm of the first target bridge arm is controlled to be turned off, so that the battery and the first boost inductor charge the energy storage element and release energy to the motor winding.

[0015] Optionally, the controller is configured to determine whether the first preset condition is satisfied by:

[0016] If the voltage increases to the first target voltage, or the duration during which the lower bridge arm of the first target bridge arm is turned off reaches the maximum allowed duration, it is determined that the first preset condition is met.

[0017] Optionally, the controller is configured to determine whether the second preset condition is satisfied by:

[0018] If the voltage decreases to a second target voltage, or the duration during which the lower bridge arm of the first target bridge arm is turned on reaches the maximum allowed duration, it is determined that the second preset condition is met.

[0019] Optionally, the device further includes at least one second boost inductor and at least one second bridge arm.

[0020] The first end of the second boost inductor of each phase is connected to the positive electrode of the battery, and the second end of the second boost inductor of each phase is connected to the midpoint of the corresponding second bridge arm, wherein the number of the second boost inductors is the same as the number of the second bridge arms;

[0021] The first end of the second bridge arm is connected to the first end of the energy storage element, and the second end of the second bridge arm is connected to the second end of the energy storage element and the negative electrode of the battery;

[0022] The controller is connected to the second bridge arm of each phase, and the controller is configured to: control the second bridge arm to achieve voltage boost through the second bridge arm.

[0023] Optionally, the controller is configured to:

[0024] Acquire the voltage across the energy storage element and the duration from the last on / off state switching of the upper bridge arm and the lower bridge arm of the first bridge arm, and the upper bridge arm and the lower bridge arm of the second bridge arm;

[0025] According to the voltage or the duration, the switching of the on-off state of the upper bridge arm and the lower bridge arm of the first bridge arm and the second bridge arm is controlled.

[0026] Optionally, the controller is configured to:

[0027] In response to determining that the voltage or the duration satisfies a third preset condition, controlling the lower bridge arm of the first target bridge arm and the second bridge arm to be turned on and the upper bridge arm to be turned off, so that the battery charges the first boost inductor and the second boost inductor, and the energy storage element releases energy to the motor winding;

[0028] In response to determining that the voltage or the duration satisfies a fourth preset condition, the first target bridge arm and the lower bridge arm of the second bridge arm are controlled to be turned off, so that the battery, the first boost inductor and the second boost inductor charge the energy storage element and release energy to the motor winding.

[0029] Optionally, the controller is configured to determine whether the third preset condition is satisfied by:

[0030] When the voltage increases to the first target voltage, or the duration during which the first target bridge arm and the lower bridge arm of the second bridge arm are turned off reaches the maximum allowed duration, it is determined that the third preset condition is met.

[0031] Optionally, the controller is configured to determine whether the fourth preset condition is satisfied by:

[0032] When the voltage decreases to the second target voltage, or the duration during which the first target bridge arm and the lower bridge arm of the second bridge arm are turned on reaches the maximum allowed duration, it is determined that the fourth preset condition is met.

[0033] Optionally, the controller is configured to:

[0034] In response to determining that the duration satisfies a fifth preset condition, controlling the lower bridge arm of the second bridge arm to be turned on and the upper bridge arm to be turned off, and the lower bridge arm of the first target bridge arm to be turned off, so that the battery charges the second boost inductor, and the first boost inductor and the battery charge the energy storage element and release energy to the motor winding;

[0035] In response to determining that the duration satisfies a sixth preset condition, the lower bridge arm of the second bridge arm is controlled to be turned off, the lower bridge arm of the first target bridge arm is turned on, and the upper bridge arm is turned off, so that the battery charges the first boost inductor, and the second boost inductor and the battery charge the energy storage element and release energy to the motor winding.

[0036] Optionally, the controller is configured to determine whether the fifth preset condition is satisfied by:

[0037] When the lower bridge arm of the second bridge arm is turned off and the duration of the conduction of the lower bridge arm of the first target bridge arm reaches the maximum allowed duration, it is determined that the fifth preset condition is met.

[0038] Optionally, the controller is configured to determine whether the sixth preset condition is satisfied by:

[0039] If the duration during which the lower bridge arm of the second bridge arm is turned on and the lower bridge arm of the first target bridge arm is turned off reaches the maximum allowed duration, it is determined that the sixth preset condition is met.

[0040] Optionally, the motor winding is a motor winding of a drive motor of a vehicle.

[0041] Optionally, the energy storage element includes a capacitor.

[0042] A second aspect of the present disclosure provides a vehicle, comprising: the energy processing device provided in the first aspect of the present disclosure.

[0043] In the above technical solution, the energy processing device includes a battery, a first boost inductor, a multi-phase first bridge arm, a multi-phase motor winding, an energy storage element and a controller; the first end of each phase motor winding is connected to the midpoint of the corresponding first bridge arm, and the second end of each phase motor winding is connected in common; the first end of each phase first bridge arm is connected to the first end of the energy storage element, and the second end of each phase first bridge arm is connected to the second end of the energy storage element and the negative electrode of the battery; the first end of the first boost inductor is connected to the positive electrode of the battery, and the second end of the first boost inductor is connected to the midpoint of the first target bridge arm, wherein the first target bridge arm is any one of the first bridge arms; the controller is connected to each phase first bridge arm, and the controller is configured to: control the first bridge arm. In this way, the first target bridge arm corresponding to the motor winding can be reused, and based on the control of the controller on the first bridge arm, the first target bridge arm can not only realize motor drive, but also realize boost, thereby improving the integration of the high-voltage system of the electric vehicle, reducing the electrical components in the high-voltage system of the electric vehicle and the wiring harness connecting the electrical components, and reducing the volume and mass of the vehicle high-voltage system.

[0044] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0046] Figure 1 is a block diagram of an energy processing device according to an exemplary embodiment.

[0047] Figure 2 is a circuit topology diagram of an energy processing device according to an exemplary embodiment.

[0048] Figure 3 It is a working principle diagram of an energy processing device when a first preset condition is met according to an exemplary embodiment.

[0049] Figure 4 It is a working principle diagram of an energy processing device when a second preset condition is met according to an exemplary embodiment.

[0050] Figure 5 is a block diagram of an energy processing device according to an exemplary embodiment.

[0051] Figure 6 is a circuit topology diagram of an energy processing device according to an exemplary embodiment.

[0052] Figure 7 It is a working principle diagram of an energy processing device when a third preset condition is met according to an exemplary embodiment.

[0053] Figure 8 It is a working principle diagram of an energy processing device when a fourth preset condition is met according to an exemplary embodiment.

[0054] Fig. 9 It is a working principle diagram of an energy processing device when a fifth preset condition is met according to an exemplary embodiment.

[0055] Fig.10 It is a working principle diagram of an energy processing device when a sixth preset condition is met according to an exemplary embodiment. DETAILED DESCRIPTION

[0056] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0057] The present disclosure provides an energy processing device, such as Figure 1 As shown, the energy processing device may include: a battery 1, a first boost inductor 2, a multi-phase first bridge arm 3, a multi-phase motor winding 4, an energy storage element 5 and a controller 6. The number of the first bridge arm 3 and the motor winding 4 is the same.

[0058] The first end of each phase motor winding 4 is connected to the midpoint of the corresponding first bridge arm 3, and the second end of each phase motor winding 4 is connected in common; the first end of each phase first bridge arm 3 is connected to the first end of the energy storage element 5, and the second end of each phase first bridge arm 3 is connected to the second end of the energy storage element 5 and the negative electrode of the battery 1;

[0059] A first end of the first boost inductor 2 is connected to the positive electrode of the battery 1, and a second end of the first boost inductor 2 is connected to the midpoint of the first target bridge arm, wherein the first target bridge arm is any one of the first bridge arms 3;

[0060] The controller 6 is connected to the first bridge arm 3 of each phase, and the controller 6 is configured to: control the first bridge arm 3 to achieve voltage boost and motor driving through the first target bridge arm.

[0061] For example, the battery 1 can be a power battery in a vehicle, and the power battery can include a plurality of batteries connected in series, which is not limited here. Among them, the motor winding 4 can be a motor winding of a driving motor of the vehicle, and the energy storage element 5 can include a capacitor. The bridge arm in the present disclosure is a circuit structure in which two power devices are connected in the form of a totem pole, with the midpoint as the output, and the upper bridge arm of each bridge arm includes a power device, and the lower bridge arm includes another power device. The power device involved in the present disclosure can be any one of a thyristor, a MOS tube (MOSFET, insulated gate field effect tube), and an IGBT (insulated gate bipolar transistor). In order to prevent the power device from being damaged by reverse voltage, each power device can be connected in reverse parallel with a parasitic diode and used as an upper bridge arm or a lower bridge arm in the bridge arm. The parasitic diode is referred to as an anti-parallel diode below.

[0062] The controller 6 can control the on / off state of the upper and lower bridge arms of the first bridge arm 3 to achieve voltage boosting. For example, the upper bridge arm of the first target bridge arm can be controlled to be turned off and the lower bridge arm can be turned on, so that the battery 1 charges the first boost inductor 2, thereby achieving voltage boosting. The controller 6 can control the on / off state of the upper and lower bridge arms of the first bridge arm 3 to achieve motor driving. For example, the upper bridge arm of at least one phase of the first bridge arm 3 can be controlled to be turned on to achieve motor driving.

[0063] By designing a new circuit topology between the battery 1, the first boost inductor 2, the multi-phase first bridge arm 3, the multi-phase motor winding 4, and the energy storage element 5, the bridge arm corresponding to any phase of the motor winding 4 (i.e., the first target bridge arm) is reused, so that under the control of the controller 6, the first target bridge arm can not only realize the motor drive where the motor winding 4 is located, but also realize the boost. Compared with adding a boost circuit including at least one phase boost inductor and a boost bridge arm between the battery 1 and the load (such as the drive motor) of the electric vehicle high-voltage system, or directly stacking the battery cells in series, the integration degree of the electric vehicle high-voltage system is effectively improved, while reducing the electrical components in the electric vehicle high-voltage system, ensuring the normal operation of the load in the electric vehicle high-voltage system. The number of electrical components (power devices) is reduced, and the number of wiring harnesses and connectors used to connect the electrical components will also be reduced accordingly, which reduces the probability of failure of the electric vehicle high-voltage system to a certain extent; on the other hand, it can effectively reduce the volume and mass of the electric vehicle high-voltage system, and improve the transportation capacity and space utilization of the electric vehicle to a certain extent.

[0064] Figure 2 FIG. 1 is a circuit topology diagram of an energy processing device according to an exemplary embodiment. Figure 2 As shown (controller 6 in Figure 2 (not shown), the energy processing device comprises a three-phase first bridge arm 3 and a three-phase motor winding 4. Each phase of the first bridge arm 3 corresponds to a phase of the motor winding 4. Figure 2 As shown, the motor winding 4 may include an A-phase winding, a B-phase winding and a C-phase winding, and each phase of the motor winding 4 has a respective first end and a second end (at Figure 2 In the plane direction shown, the first end is the left end and the second end is the right end). Among them, the first end of the A-phase winding is used to connect the midpoint of the A-phase bridge arm, the first end of the B-phase winding is used to connect the midpoint of the B-phase bridge arm, and the first end of the C-phase winding is used to connect the midpoint of the C-phase bridge arm. In addition, the second end of the A-phase winding, the second end of the B-phase winding, and the second end of the C-phase winding are connected in common. Each phase first bridge arm 3 has its own first end and second end (in Figure 2 In the plane direction shown, the first end is the upper end and the second end is the lower end). The A-phase bridge arm is the first target bridge arm, and the midpoint of the A-phase bridge arm is also connected to the positive electrode of the battery 1 through the first boost inductor 2.

[0065] The energy processing device provided by the present disclosure can provide a variety of control strategies for selection, that is, it provides the possibility of enabling the first target bridge arm to participate in charging the first boost inductor 2, and also provides the possibility of enabling the first target bridge arm to participate in providing energy for the motor drive. According to the voltage across the actual energy storage element 5 and the on-off state of the upper and lower bridge arms of the first bridge arm 3, the controller 6 can perform corresponding strategy configuration, so that the flexibility and practicality of the energy processing device are further enhanced.

[0066] correspond Figure 2 In an optional embodiment, the controller 6 may be configured as follows:

[0067] Obtaining the voltage across the energy storage element 5 and the duration between the last on-off state switching of the upper bridge arm and the lower bridge arm of the first bridge arm 3;

[0068] The switching of the on-off state of the upper bridge arm and the lower bridge arm of the first bridge arm 3 is controlled according to the voltage or the duration.

[0069] Among them, the on-off frequency of the upper and lower bridge arms in the bridge arm can be preset, and then the maximum allowable on-off time of the upper and lower bridge arms in the bridge arm can be determined based on the on-off frequency. Timing can be started when the upper bridge arm and the lower bridge arm of the first bridge arm 3 realize state switching (from on to off, or from off to on) to determine the time from the last on-off state switching. The on-off frequency of the power devices in each phase bridge arm can be consistent, that is, the maximum allowable time of each power device can be consistent.

[0070] For example, when the voltage across the energy storage element 5 is greater than the first target voltage, it can be determined that the energy storage element 5 has completed charging and can be used to power the load in the high-voltage system of the electric vehicle. At this time, the controller 6 can control the state switching of the upper and lower bridge arms in the first bridge arm 3, so that the energy storage element 5 releases energy to the motor winding 4 or other loads (such as a compressor, a PTC heating module) connected to the energy storage element 5 in the high-voltage system of the electric vehicle.

[0071] For another example, if the time from the last on-off state switching of the upper or lower bridge arm of the first bridge arm 3 reaches the maximum allowed time, in order to ensure the safe operation of the first bridge arm 3 and avoid its excessive wear and tear, the controller 6 can control the switching of the on-off state of the upper and lower bridge arms in the first bridge arm 3.

[0072] Optionally, the controller 6 may be configured as:

[0073] In response to determining that the voltage or the duration satisfies the first preset condition, controlling the lower bridge arm of the first target bridge arm to be turned on and the upper bridge arm to be turned off, so that the battery 1 charges the first boost inductor 2 and the energy storage element 5 releases energy to the motor winding 4;

[0074] In response to determining that the voltage or duration satisfies the second preset condition, the lower bridge arm of the first target bridge arm is controlled to be turned off, so that the battery 1 and the first boost inductor 2 charge the energy storage element 5 and release energy to the motor winding 4 .

[0075] exist Figure 3In the process (when it is determined that the voltage or duration meets the first preset condition), the lower arm of the first target bridge arm (A-phase bridge arm) is turned on and the upper arm is turned off, and the current flows out from the positive electrode of the battery 1, and flows into the negative electrode of the battery 1 through the first boost inductor 2 and the lower arm of the A-phase bridge arm in turn. In this way, the battery 1 can charge (store energy) the first boost inductor 2. In addition, by controlling the on-duty cycle of the power device of the lower arm of the A-phase bridge arm, the size of the charging current can be controlled, and then the size of the charging power can be controlled. At the same time, the number of on-states and the on-duty cycle of each power device in the B-phase bridge arm and the C-phase bridge arm can be controlled, so that the energy storage element 5 releases energy to the motor winding 4, and the size of the discharge current of the energy storage element 5 is controlled.

[0076] The controller 6 may be configured to determine whether the first preset condition is satisfied in the following manner: if the voltage increases to the first target voltage, or the duration of the shutdown of the lower bridge arm of the first target bridge arm reaches the maximum allowed duration, it is determined that the first preset condition is satisfied.

[0077] For example, the first target voltage can be a preset threshold value, or it can be a value determined in real time by PI adjustment based on the voltage before and after the boost (battery voltage and the boosted voltage obtained by the boost inductor). In the previous state where the first preset condition is met (i.e., the state where the second preset condition is met), the battery 1 and the first boost inductor 2 charge the energy storage element 5, and the energy stored in the battery 1 and the first boost inductor 2 is continuously transferred to the energy storage element 5. The voltage across the energy storage element 5 increases over time, while the energy stored in the first boost inductor 2 decreases.

[0078] If the voltage increases to the first target voltage, it can be determined that the energy storage element 5 has completed charging and can be used to power the load in the high-voltage system of the electric vehicle. At this time, it can be determined that the first preset condition is met, and the lower bridge arm of the first target bridge arm is controlled to be turned on and the upper bridge arm is turned off, so that the battery 1 charges the first boost inductor 2 and the energy storage element 5 releases energy to the motor winding 4. In addition, the energy storage element 5 can also release energy to other loads connected to the energy storage element 5 in the high-voltage system of the electric vehicle.

[0079] In the state where the second preset condition is met, the on-off state of the upper bridge arm of the first target bridge arm and the power devices in the first bridge arm 3 of other phases are not always uniquely fixed, but the lower bridge arm of the first target bridge arm is always turned off, and the maximum allowable durations corresponding to each power device are consistent. Once the lower bridge arm of the first target bridge arm is turned on, the controller 6 no longer corresponds to the second preset condition. Therefore, it can be determined whether the first preset condition is met based on the size relationship between the duration of the lower bridge arm of the first target bridge arm being turned off and the maximum allowable duration. If the duration of the lower bridge arm of the first target bridge arm being turned off reaches the maximum allowable duration, it can be determined that the on-off state of the lower bridge arm of the first target bridge arm needs to be changed to avoid excessive loss and ensure its subsequent safe operation.

[0080] exist Figure 4 In the process (when it is determined that the voltage or duration meets the second preset condition), the lower arm of the first target bridge arm (A-phase bridge arm) is turned off, and the upper arm can be turned off or turned on. If the upper arm of the A-phase bridge arm is turned off, the current cannot be transmitted through the main body of the power device. At this time, the anti-parallel diode of the power device can be used to achieve the conduction of the circuit. However, under the same conditions, the loss of the anti-parallel diode is much greater than that of the power device. Therefore, the power device can be turned on, that is, the upper arm of the A-phase bridge arm is turned on, so that the current flows through the main body of the power device to reduce the loss of the electronic components. When the lower arm of the A-phase bridge arm is turned off, the current flows out from the positive electrode of the battery 1, passes through the first boost inductor 2 and the upper arm of the A-phase bridge arm in turn, and flows into the first end of the energy storage element 5 ( Figure 4 The upper side end in the plane direction shown in FIG. 1 ) and then from the second end of the energy storage element 5 ( Figure 4 The lower side end in the plane direction shown in the figure) flows out into the negative electrode of the battery 1, and through this process, the battery 1 and the first boost inductor 2 charge the energy storage element 5. At the same time, the number of conduction and the conduction duty cycle of each power device in the B-phase bridge arm and the C-phase bridge arm can be controlled, so that the battery 1 and the first boost inductor 2 provide energy for the motor winding 4.

[0081] The controller 6 may be configured to determine whether the second preset condition is satisfied in the following manner: if the voltage decreases to the second target voltage, or the duration of conduction of the lower bridge arm of the first target bridge arm reaches the maximum allowed duration, it is determined that the second preset condition is satisfied.

[0082] For example, the second target voltage can be a preset threshold value, or it can be a value determined in real time by PI adjustment based on the voltage before and after the boost (battery voltage and the boosted voltage obtained by the boost inductor). In the previous state where the second preset condition is met (i.e., the first preset condition is met), the battery 1 charges the first boost inductor 2, the energy storage element 5 releases energy to the motor winding 4, the energy in the first boost inductor 2 continues to rise, and the voltage across the energy storage element 5 continues to decrease over time.

[0083] If the voltage is reduced to the second target voltage, it can be determined that the voltage across the energy storage element 5 is low, and it is difficult to continue to release energy to the motor winding 4. The energy storage element 5 needs to be charged, and the battery 1 and the first boost inductor 2 can release energy to the load (including at least the motor winding 4) in the electric vehicle high-voltage system. At this time, it can be determined that the second preset condition is met, and the lower bridge arm of the first target bridge arm is controlled to be turned off, so that the battery 1 and the first boost inductor 2 charge the energy storage element 5 and release energy to the motor winding 4. In addition, the battery 1 and the first boost inductor 2 can also release energy to other loads in the electric vehicle high-voltage system.

[0084] In the state where the first preset condition is met, the on-off state of the power devices in the first bridge arm 3 of other phases other than the first target bridge arm is not always uniquely fixed, but the lower bridge arm of the first target bridge arm is always on and the upper bridge arm is always off, and the maximum allowable durations corresponding to each power device are consistent. Once the lower bridge arm is turned off, the controller 6 no longer corresponds to the first preset condition. Therefore, it can be determined whether the second preset condition is met based on the magnitude relationship between the on-time of the lower bridge arm of the first target bridge arm and the maximum allowable duration. If the on-time of the lower bridge arm of the first target bridge arm reaches the maximum allowable duration, it can be determined that the on-off state of the lower bridge arm of the first target bridge arm needs to be changed to avoid excessive loss and ensure its subsequent safe operation.

[0085] By satisfying the first preset condition and satisfying the second preset condition in an alternating cycle, the voltage can be boosted, and at the same time, the motor can also complete the inverter drive. The action timing of the power device in realizing the inverter drive and the voltage boost has an overlapping part, so the two functions can be coupled together.

[0086] Figure 5 FIG. 1 is a block diagram of an energy processing device according to an exemplary embodiment. Figure 5 As shown, in Figure 1 On the basis of this, the energy processing device provided by the present disclosure further includes at least one-phase second boost inductor 7 and at least one-phase second bridge arm 8, wherein the number of the second boost inductor 7 and the number of the second bridge arms 8 are the same.

[0087] The first end of the second boost inductor 7 of each phase is connected to the positive electrode of the battery 1, and the second end of the second boost inductor 7 of each phase is connected to the midpoint of the corresponding second bridge arm 8;

[0088] The first end of the second bridge arm 8 is connected to the first end of the energy storage element 5, and the second end of the second bridge arm 8 is connected to the second end of the energy storage element 5 and the negative electrode of the battery 1;

[0089] The controller 6 is connected to the second bridge arm 8 of each phase, and the controller 6 is further configured to control the second bridge arm 8 to achieve voltage boost through the second bridge arm 8 .

[0090] It should be noted that although Figure 5 The energy processing device further includes a second bridge arm 8 of one phase and a second boost inductor 7 of one phase as an example, but those skilled in the art should understand that Figure 5 The number of second bridge arms 8 and the number of second boost inductors 7 are only examples. Figure 6 FIG. 1 is a circuit topology diagram of an energy processing device according to an exemplary embodiment. Figure 6 As shown, in Figure 2 On the basis of the first phase, a second bridge arm 8 and a second boost inductor 7 are added. Figure 6In the plane direction shown, the first end of the second boost inductor 7 is the left end, the second end of the second boost inductor 7 is the right end, the first end of the second bridge arm 8 is the upper end, and the second end of the second bridge arm 8 is the lower end. The second end of the second boost inductor 7 is connected to the midpoint of the second bridge arm 8.

[0091] In this way, by adding at least one second boost inductor 7 and at least one second bridge arm 8, the voltage level of the battery 1 can be further increased, while reducing the workload of the first boost inductor 2. In addition, the controller 6 can control the first bridge arm 3 and the second bridge arm 8 based on two different control modes of staggered boost and non-staggered boost, so that the energy processing device provided by the present disclosure can achieve boosting and motor driving at the same time, so that the flexibility and practicality of the energy processing device are further enhanced.

[0092] The controller 6 may be configured as follows:

[0093] Obtain the voltage across the energy storage element 5 and the duration from the last on / off state switching of the upper bridge arm and the lower bridge arm of the first bridge arm 3 and the upper bridge arm and the lower bridge arm of the second bridge arm 8;

[0094] According to the voltage or the duration, the switching of the on and off states of the upper bridge arm and the lower bridge arm of the first bridge arm 3 and the second bridge arm 8 is controlled.

[0095] The specific method of obtaining the voltage and duration has been described in detail in the previous embodiment, and will not be elaborated here. The following will describe the strategy configuration of the controller 6 in detail based on two different control methods: non-interleaved boost and interleaved boost.

[0096] Based on the configuration strategy of non-interleaved boost, the waveform of the voltage across the energy storage element 5 can be a periodic triangular wave. For the configuration strategy of non-interleaved boost, the controller 6 can be configured as:

[0097] In response to determining that the voltage or the duration satisfies the third preset condition, the lower bridge arm of the first target bridge arm and the second bridge arm 8 are controlled to be turned on and the upper bridge arm is turned off, so that the battery 1 charges the first boost inductor 2 and the second boost inductor 7, and the energy storage element 5 releases energy to the motor winding 4;

[0098] In response to determining that the voltage or duration satisfies the fourth preset condition, the first target bridge arm and the lower bridge arm of the second bridge arm 8 are controlled to be turned off, so that the battery 1, the first boost inductor 2 and the second boost inductor 7 charge the energy storage element 5 and release energy to the motor winding 4.

[0099] exist Figure 7In the case where the voltage or duration satisfies the third preset condition, the lower bridge arm of the second bridge arm 8 and the first target bridge arm (phase A bridge arm) is turned on and the upper bridge arm is turned off, and the current flows out from the positive electrode of the battery 1, passes through the first boost inductor 2 and the lower bridge arm of the phase A bridge arm, flows into the negative electrode of the battery 1, and passes through the second boost inductor 7 and the lower bridge arm of the second bridge arm 8. In this way, the battery 1 can charge (store energy) the first boost inductor 2 and the second boost inductor 7. In addition, by controlling the on-duty ratio of the power devices of the phase A bridge arm and the lower bridge arm of the second bridge arm 8, the size of the charging current can be controlled, and then the size of the charging power can be controlled. At the same time, the number of power devices in the B-phase bridge arm and the C-phase bridge arm that are turned on and the duty cycle can be controlled to enable the energy storage element 5 to release energy to the motor winding 4, and to control the magnitude of the discharge current of the energy storage element 5. For example, the upper bridge arm of the C-phase bridge arm and the lower bridge arm of the B-phase bridge arm can be turned on, and the lower bridge arm of the C-phase bridge arm and the upper bridge arm of the B-phase bridge arm can be turned off, thereby realizing the conduction of the energy storage element 5 to release the energy circuit to the motor winding 4.

[0100] The controller 6 may be configured to determine that the third preset condition is satisfied in the following manner: when the voltage increases to the first target voltage, or when the duration of the shutdown of the first target bridge arm and the lower bridge arm of the second bridge arm 8 reaches the maximum allowed duration, it is determined that the third preset condition is satisfied.

[0101] For example, in the previous state where the third preset condition is satisfied (i.e., the state where the fourth preset condition is satisfied), the battery 1, the first boost inductor 2 and the second boost inductor 7 charge the energy storage element 5, and the energy stored in the battery 1, the first boost inductor 2 and the second boost inductor 7 is continuously transferred to the energy storage element 5, and the voltage across the energy storage element 5 increases continuously with the passage of time, while the energy stored in the first boost inductor 2 and the second boost inductor 7 decreases.

[0102] If the voltage increases to the first target voltage, it can be determined that the energy storage element 5 has completed charging and can be used to power the load in the high-voltage system of the electric vehicle. At this time, it can be determined that the third preset condition is met, and the lower bridge arm of the first target bridge arm and the second bridge arm 8 are controlled to be turned on and the upper bridge arm is turned off. At this time, the energy storage element 5 starts to discharge, and the first boost inductor 2 and the second boost inductor 7 start to charge.

[0103] In the state where the fourth preset condition is met, the on / off states of the power devices in the upper bridge arm of the first target bridge arm, the upper bridge arm of the second bridge arm 8, and the first bridge arm 3 of other phases are not always uniquely fixed, but the lower bridge arm of the first target bridge arm and the second bridge arm 8 are always off, and the maximum allowable durations corresponding to the various power devices are consistent. Once the lower bridge arm of the first target bridge arm or the second bridge arm 8 is turned on, the controller 6 no longer corresponds to the fourth preset condition. Therefore, it is possible to determine whether the third preset condition is met based on the relationship between the duration of the off-time of the lower bridge arm of the first target bridge arm and the second bridge arm 8 and the maximum allowable duration, so as to avoid excessive loss of the power devices in the lower bridge arm of the first target bridge arm and the second bridge arm 8, and ensure their subsequent safe operation.

[0104] exist Figure 8 In the case where the voltage or duration satisfies the fourth preset condition, the first target bridge arm (A phase bridge arm) and the lower bridge arm of the second bridge arm 8 are turned off, and the upper bridge arm can be turned off or turned on. Preferably, the upper bridge arms of the two are controlled to be turned on, and the specific reasons are described in detail in the above embodiments, which will not be elaborated here.

[0105] When the A-phase bridge arm and the lower bridge arm of the second bridge arm 8 are turned off, the current flows out from the positive electrode of the battery 1, passes through the first boost inductor 2 and the upper bridge arm of the A-phase bridge arm in sequence, and flows into the first end of the energy storage element 5 ( Figure 8 The upper side end in the plane direction shown in FIG. 1 ), or flows into the first end of the energy storage element 5 through the second boost inductor 7 and the upper bridge arm of the second bridge arm 8 in sequence, and then flows from the second end ( Figure 8 The lower side end in the plane direction shown in the figure) flows out and enters the negative electrode of the battery 1. Through this process, the battery 1, the first boost inductor 2 and the second boost inductor 7 are used to charge the energy storage element 5. At the same time, the number of conduction and the conduction duty cycle of each power device in the B-phase bridge arm and the C-phase bridge arm can be controlled, so that the battery 1, the first boost inductor 2 and the second boost inductor 7 provide energy for the motor winding 4. For example, the lower bridge arm of the B-phase bridge arm can be controlled to be turned on, and the current flowing out of the positive electrode of the battery 1 can pass through the first boost inductor 2, the A-phase winding, the B-phase winding, and the lower bridge arm of the B-phase bridge arm back to the negative electrode of the battery 1.

[0106] The controller 6 may be configured to determine that the fourth preset condition is satisfied in the following manner: when the voltage decreases to the second target voltage, or when the duration of conduction of the first target bridge arm and the lower bridge arm of the second bridge arm 8 reaches the maximum allowed duration, it is determined that the fourth preset condition is satisfied.

[0107] For example, in the previous state where the fourth preset condition is met (i.e., the state where the third preset condition is met), the battery 1 charges the first boost inductor 2 and the second boost inductor 7, and the energy storage element 5 releases energy to the motor winding 4. The energy in the first boost inductor 2 and the second boost inductor 7 continues to increase, and the voltage across the energy storage element 5 continues to decrease with the passage of time.

[0108] If the voltage decreases to the second target voltage, it can be determined that the voltage across the energy storage element 5 is low, and it is difficult to continue to release energy to the motor winding 4, and the energy storage element 5 needs to be charged. At this time, it can be determined that the fourth preset condition is met, and the first target bridge arm and the lower bridge arm of the second bridge arm 8 are controlled to be turned off, so that the energy storage element 5 starts to charge, and the battery 1, the first boost inductor 2 and the second boost inductor 7 provide energy to the motor winding 4.

[0109] When the third preset condition is met, the on / off state of the power devices in the first bridge arm 3 of other phases other than the first target bridge arm is not always uniquely fixed, but the second bridge arm 8 and the lower bridge arm of the first target bridge arm are always on, and the upper bridge arm is always off, and the maximum allowable durations corresponding to the various power devices are consistent. Once the second bridge arm 8 or the lower bridge arm of the first target bridge arm is turned off, the controller 6 no longer corresponds to the third preset condition. Therefore, it can be determined whether the fourth preset condition is met based on the magnitude relationship between the on-time and the maximum allowable duration of the lower bridge arm of the second bridge arm 8 and the first target bridge arm, so as to avoid excessive loss of the power devices in the first target bridge arm and the second bridge arm 8, and ensure their subsequent safe operation.

[0110] By satisfying the third preset condition and the fourth preset condition in an alternating cycle, the voltage can be boosted, and at the same time, the motor can also complete the inverter drive. The action timing of the power device in realizing the inverter drive and the voltage boost has an overlapping part, so the two functions can be coupled together.

[0111] For the configuration strategy of staggered boost, the phases of the electromotive force of different boost inductors are staggered during staggered boost, and the staggered angle can be determined according to the number of boost inductors (including the first boost inductor 2 and the second boost inductor 7). Figure 6 For example, the phase difference between the electromotive force of the first boost inductor 2 and the electromotive force of the second boost inductor 7 is 180°. If there is a one-phase first boost inductor 2 and a two-phase second boost inductor 7, the phase difference between the electromotive force of the first boost inductor 2 and the electromotive force of the one-phase second boost inductor 7 is 120°, and the phase difference between the electromotive force of the second boost inductor 7 and the electromotive force of the other-phase second boost inductor 7 is also 120°. Based on the configuration strategy of staggered boosting, the voltage across the energy storage element 5 hardly changes after it is fully charged.

[0112] by Figure 6 Taking the circuit topology diagram of as an example, for the configuration strategy of staggered boost, the controller 6 can be configured as follows:

[0113] In response to determining that the duration satisfies the fifth preset condition, the lower bridge arm of the second bridge arm 8 is controlled to be turned on and the upper bridge arm is turned off, and the lower bridge arm of the first target bridge arm is turned off, so that the battery 1 charges the second boost inductor 7, and the first boost inductor 2 and the battery 1 charge the energy storage element 5 and release energy to the motor winding 4;

[0114] In response to determining that the duration satisfies the sixth preset condition, the lower bridge arm of the second bridge arm 8 is controlled to be turned off, the lower bridge arm of the first target bridge arm is turned on, and the upper bridge arm is turned off, so that the battery 1 charges the first boost inductor 2, and the second boost inductor 7 and the battery 1 charge the energy storage element 5 and release energy to the motor winding 4.

[0115] exist Fig. 9 In the case where the duration is determined to satisfy the fifth preset condition, the lower bridge arm of the second bridge arm 8 is turned on and the upper bridge arm is turned off, and the lower bridge arm of the first target bridge arm (A phase bridge arm) is turned off, and the upper bridge arm can be turned on or off. Preferably, the upper bridge arm of the first target bridge arm is turned on, and the specific reason is described in detail in the above embodiment, which will not be elaborated here.

[0116] like Fig. 9 As shown, the current flows out from the positive electrode of the battery 1, passes through the second boost inductor 7 and the lower bridge arm of the second bridge arm 8, and flows into the negative electrode of the battery 1 to charge the second boost inductor 7; the current flows out from the positive electrode of the battery 1, passes through the first boost inductor 2 and the upper bridge arm of the first target bridge arm, and flows into the first end ( Fig. 9 The upper side end in the plane direction shown in FIG. 1 ) and then from the second end of the energy storage element 5 ( Fig. 9 The first boost inductor 2 and the battery 1 can charge the energy storage element 5. At the same time, the number of conduction and the conduction duty cycle of each power device in the B-phase bridge arm and the C-phase bridge arm can be controlled to make the first boost inductor 2 and the battery 1 release energy to the motor winding 4, and control the magnitude of the discharge current of the energy storage element 5. For example, the upper bridge arm of the C-phase bridge arm and the lower bridge arm of the B-phase bridge arm can be turned on, and the lower bridge arm of the C-phase bridge arm and the upper bridge arm of the B-phase bridge arm can be turned off, so as to realize the conduction of the energy release loop of the first boost inductor 2 and the battery 1 to the motor winding 4.

[0117] The controller 6 may be configured to determine whether the fifth preset condition is met in the following manner: when the lower bridge arm of the second bridge arm 8 is turned off and the conduction time of the lower bridge arm of the first target bridge arm reaches the maximum allowed time, it is determined that the fifth preset condition is met.

[0118] For example, when the sixth preset condition is met, the on-off state of the power devices in the upper bridge arm of the second bridge arm 8 and the first bridge arm 3 of other phases is not always uniquely fixed, but the lower bridge arm of the first target bridge arm is always on, and the lower bridge arm of the second bridge arm 8 is always off, and the maximum allowable durations corresponding to the various power devices are consistent. Once the lower bridge arm of the first target bridge arm is off, or the lower bridge arm of the second bridge arm 8 is on, the controller 6 no longer corresponds to the sixth preset condition. Therefore, according to the relationship between the duration of the lower bridge arm of the second bridge arm 8 being off, the duration of the lower bridge arm of the first target bridge arm being on, and the maximum allowable duration, it can be determined whether the on-off state of the power device of the bridge arm needs to be changed (i.e., whether the fifth preset condition is met) to avoid excessive loss and ensure its subsequent safe operation.

[0119] exist Fig.10 In the case where the duration is determined to satisfy the sixth preset condition, the lower bridge arm of the first target bridge arm (A phase bridge arm) is turned on and the upper bridge arm is turned off, and the lower bridge arm of the second bridge arm 8 is turned off, and the upper bridge arm can be turned on or off. Preferably, the upper bridge arm of the second bridge arm 8 is turned on, and the specific reason is described in detail in the above embodiment, which will not be elaborated here.

[0120] like Fig.10 As shown, the current flows out from the positive electrode of the battery 1, passes through the first boost inductor 2 and the lower bridge arm of the first target bridge arm, and flows into the negative electrode of the battery 1 to charge the first boost inductor 2; the current flows out from the positive electrode of the battery 1, passes through the second boost inductor 7 and the upper bridge arm of the second bridge arm 8, and flows into the first end of the energy storage element 5 ( Fig.10 The upper side end in the plane direction shown in FIG. 1 ) and then from the second end of the energy storage element 5 ( Fig.10 The second boost inductor 7 and the battery 1 are connected to the lower side end in the plane direction shown in the figure, and return to the negative electrode of the battery 1, so that the second boost inductor 7 and the battery 1 charge the energy storage element 5. At the same time, the number of conduction and the conduction duty cycle of each power device in the B-phase bridge arm and the C-phase bridge arm can be controlled, so that the second boost inductor 7 and the battery 1 release energy to the motor winding 4, and the size of the discharge current of the energy storage element 5 is controlled.

[0121] The controller 6 may be configured to determine whether the sixth preset condition is satisfied in the following manner: when the duration of the lower bridge arm of the second bridge arm 8 being turned on and the lower bridge arm of the first target bridge arm being turned off reaches the maximum allowed duration, it is determined that the sixth preset condition is satisfied.

[0122] For example, when the fifth preset condition is met, the on-off state of the power devices in the upper bridge arm of the first target bridge arm and the first bridge arm 3 of other phases is not always unique and fixed, but the lower bridge arm of the first target bridge arm is always off, and the lower bridge arm of the second bridge arm 8 is always on, and the maximum allowable durations corresponding to the various power devices are consistent. Once the lower bridge arm of the first target bridge arm is on, or the lower bridge arm of the second bridge arm 8 is off, the controller 6 no longer corresponds to the fifth preset condition. Therefore, according to the relationship between the duration of the on-time of the lower bridge arm of the second bridge arm 8 and the off-time of the lower bridge arm of the first target bridge arm and the maximum allowable duration, it can be determined whether the on-off state of the power device of the bridge arm needs to be changed (i.e., whether the sixth preset condition is met) to avoid excessive loss and ensure its subsequent safe operation.

[0123] When the controller 6 adopts the configuration strategy of staggered boost, under ideal conditions, the energy storage element 5 will never discharge after being fully charged, that is, the voltage across the energy storage element 5 remains unchanged after charging is completed. Even if the voltage across the energy storage element 5 decreases, the voltage will rise due to the alternating cycle of satisfying the third preset condition and satisfying the fourth preset condition. If the capacitance of the energy storage element 5 has reached its maximum value, it is no longer necessary to store energy, and the battery 1 and the boost inductor provide energy for the motor winding 4. By satisfying the alternating cycle of satisfying the fifth preset condition and satisfying the sixth preset condition, boosting can be completed, and at the same time, the motor can also complete inverter drive. The action timing of the power device when implementing inverter drive and boosting has overlapping parts, so these two functions can be coupled together.

[0124] The present disclosure also provides a vehicle, comprising the above energy processing device provided by the present disclosure.

[0125] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0126] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0127] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. An energy processing device, characterized in that: It comprises a battery (1), a first boost inductor (2), a multi-phase first bridge arm (3), a multi-phase battery winding (4), an energy storage element (5) and a controller (6); The first end of each phase battery winding (4) is connected to the midpoint of the corresponding first bridge arm (3), and the second end of each phase battery winding (4) is connected in common; the first end of each phase first bridge arm (3) is connected to the first end of the energy storage element (5), and the second end of each phase first bridge arm (3) is connected to the second end of the energy storage element (5) and the negative electrode of the battery (1); The first end of the first boost inductor (2) is connected to the positive electrode of the battery (1), and the second end of the first boost inductor (2) is connected to the midpoint of a first target bridge arm, wherein the first target bridge arm is any one of the first bridge arms (3); The controller (6) is connected to the first bridge arm (3) of each phase, and the controller (6) is configured to: control the first bridge arm (3) to achieve voltage boost and motor driving through the first target bridge arm.

2. The device according to claim 1, characterized in that The controller (6) is configured to: Acquire the voltage across the energy storage element (5) and the duration from the last on / off state switching of the upper bridge arm and the lower bridge arm of the first bridge arm (3); According to the voltage or the duration, the switching of the on and off states of the upper bridge arm and the lower bridge arm of the first bridge arm (3) is controlled.

3. The device according to claim 2, characterized in that The controller (6) is configured to: In response to determining that the voltage or the duration satisfies a first preset condition, controlling the lower bridge arm of the first target bridge arm to be turned on and the upper bridge arm to be turned off, so that the battery (1) charges the first boost inductor (2) and the energy storage element (5) releases energy to the battery winding (4); In response to determining that the voltage or the duration satisfies a second preset condition, the lower bridge arm of the first target bridge arm is controlled to be turned off, so that the battery (1) and the first boost inductor (2) charge the energy storage element (5) and release energy to the battery winding (4).

4. The device according to claim 3, characterized in that The controller (6) is configured to determine whether the first preset condition is satisfied by: If the voltage increases to a first target voltage, or the duration during which the lower bridge arm of the first target bridge arm is turned off reaches a maximum allowed duration, it is determined that the first preset condition is met.

5. The device according to claim 3, characterized in that The controller (6) is configured to determine whether the second preset condition is satisfied by: If the voltage decreases to a second target voltage, or the duration during which the lower bridge arm of the first target bridge arm is turned on reaches a maximum allowed duration, it is determined that the second preset condition is met.

6. The device according to claim 1, characterized in that The device also includes at least one phase second boost inductor (7) and at least one phase second bridge arm (8). The first end of the second boost inductor (7) of each phase is connected to the positive electrode of the battery (1), and the second end of the second boost inductor (7) of each phase is connected to the midpoint of the corresponding second bridge arm (8), wherein the number of the second boost inductor (7) and the number of the second bridge arms (8) are the same; The first end of the second bridge arm (8) is connected to the first end of the energy storage element (5), and the second end of the second bridge arm (8) is connected to the second end of the energy storage element (5) and the negative electrode of the battery (1); The controller (6) is connected to the second bridge arm (8) of each phase, and the controller (6) is configured to: control the second bridge arm (8) to achieve voltage boost through the second bridge arm (8).

7. The device according to claim 6, characterized in that The controller (6) is configured to: Obtaining the voltage across the energy storage element (5) and the duration from the last on / off state switching of the upper bridge arm and the lower bridge arm of the first bridge arm (3) and the upper bridge arm and the lower bridge arm of the second bridge arm (8); According to the voltage or the duration, the switching of the on and off states of the upper bridge arm and the lower bridge arm of the first bridge arm (3) and the second bridge arm (8) is controlled.

8. The device according to claim 7, characterized in that The controller (6) is configured to: In response to determining that the voltage or the duration satisfies a third preset condition, controlling the lower bridge arm of the first target bridge arm and the second bridge arm (8) to be turned on and the upper bridge arm to be turned off, so that the battery (1) charges the first boost inductor (2) and the second boost inductor (7), and the energy storage element (5) releases energy to the battery winding (4); In response to determining that the voltage or the duration satisfies a fourth preset condition, the first target bridge arm and the lower bridge arm of the second bridge arm (8) are controlled to be turned off, so that the battery (1), the first boost inductor (2) and the second boost inductor (7) charge the energy storage element (5) and release energy to the battery winding (4).

9. The device according to claim 8, characterized in that The controller (6) is configured to determine whether the third preset condition is satisfied by: When the voltage increases to the first target voltage, or the duration of the shutdown of the first target bridge arm and the lower bridge arm of the second bridge arm (8) reaches the maximum allowed duration, it is determined that the third preset condition is met.

10. The device according to claim 8, characterized in that The controller (6) is configured to determine whether the fourth preset condition is satisfied by: When the voltage decreases to the second target voltage, or the duration of conduction of the first target bridge arm and the lower bridge arm of the second bridge arm (8) reaches the maximum allowed duration, it is determined that the fourth preset condition is met.

11. The device according to claim 7, characterized in that The controller (6) is configured to: In response to determining that the duration satisfies a fifth preset condition, controlling the lower bridge arm of the second bridge arm (8) to be turned on and the upper bridge arm to be turned off, and the lower bridge arm of the first target bridge arm to be turned off, so that the battery (1) charges the second boost inductor (7), and the first boost inductor (2) and the battery (1) charge the energy storage element (5) and release energy to the battery winding (4); In response to determining that the duration satisfies a sixth preset condition, the lower bridge arm of the second bridge arm (8) is controlled to be turned off, the lower bridge arm of the first target bridge arm is turned on, and the upper bridge arm is turned off, so that the battery (1) charges the first boost inductor (2), and the second boost inductor (7) and the battery (1) charge the energy storage element (5) and release energy to the battery winding (4).

12. The device according to claim 11, characterized in that The controller (6) is configured to determine whether the fifth preset condition is satisfied by: When the lower bridge arm of the second bridge arm (8) is turned off and the duration of the lower bridge arm of the first target bridge arm being turned on reaches the maximum allowed duration, it is determined that the fifth preset condition is met.

13. The device according to claim 11, characterized in that The controller (6) is configured to determine whether the sixth preset condition is satisfied by: If the duration during which the lower bridge arm of the second bridge arm (8) is turned on and the lower bridge arm of the first target bridge arm is turned off reaches the maximum allowed duration, it is determined that the sixth preset condition is met.

14. The device according to claim 1, characterized in that The battery winding (4) is a battery winding (4) of a driving motor of a vehicle.

15. The device according to claim 1, characterized in that The energy storage element (5) comprises a capacitor.

16. A vehicle, characterized in that: include: An energy processing device according to any one of claims 1 to 15.

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