Single-stage bidirectional vehicle charging module

Abstract

A single-stage bidirectional on-board charging module. The on-board charging module includes a filter connected to a first conductor and a second conductor. The first conductor and the second conductor are connected to a voltage source. An AC / AC converter includes a first set of switches and a second set of switches connected between the first conductor and the second conductor. The first set of switches and the second set of switches selectively implement bidirectional current interruption and bipolar voltage blocking. An isolation circuit includes a first terminal and a second terminal, the first terminal being connected to a first node between the first set of switches and a second node between the second set of switches, and the second terminal being connected to a third conductor and a fourth conductor. An AC / DC converter is connected to the third conductor and the fourth conductor. The filter is connected to the third conductor and the fourth conductor between the AC / DC converter and the battery.

Description

[0001] introduce

[0002] The information provided in this section is for the purpose of generally presenting the context of this disclosure. Within the scope described in this section, the work of the currently named inventors and aspects of this description that might not otherwise conform to the prior art at the time of filing are neither expressly nor implicitly acknowledged as prior art relative to this disclosure.

[0003] This disclosure relates to battery systems, and more particularly to battery systems for vehicles including a single-stage bidirectional on-board charging module.

[0004] Vehicles such as battery electric vehicles (BEVs), hybrid vehicles, and fuel cell vehicles include rechargeable energy storage systems (RESS). A RESS comprises a battery module or battery pack, which includes multiple individual battery cells. The RESS can charge from the grid and / or supply power to the grid from the battery module or battery pack (V2G). Summary of the Invention

[0005] An on-board charging module for a vehicle includes a filter connected to a first conductor and a second conductor, wherein the first and second conductors are connected to a voltage source. An AC / AC converter includes a first set of switches connected between the first and second conductors and a second set of switches connected between the first and second conductors. The first and second sets of switches selectively implement bidirectional current interruption and bipolar voltage blocking. An isolation circuit includes a first terminal and a second terminal, the first terminal being connected to a first node between the first and second sets of switches and a second node between the second and third conductors, and the second terminal being connected to a third and a fourth conductor. An AC / DC converter is connected to the third and fourth conductors. The filter is connected to the third and fourth conductors between the AC / DC converter and the battery.

[0006] Among other features, the switches in the first and second sets of switches provide bidirectional current interruption and bipolar voltage blocking. The first and second sets of switches are monolithically integrated. The switches in the first and second sets of switches provide unidirectional current interruption and unipolar voltage blocking. A voltage absorption circuit is connected in parallel with the first set of switches.

[0007] Among other features, the power conversion circuit is connected to the third and fourth conductors between the AC / DC converter and the battery. The power conversion circuit is configured to filter dominant harmonic frequencies.

[0008] Among other features, the AC / AC converter includes a first AC / AC converter and a second AC / AC converter. The first AC / AC converter includes a first set of switches and a second set of switches. The second AC / AC converter includes a third set of switches connected in series between a first conductor and a second conductor, and a fourth set of switches connected in series between the first conductor and the second conductor. The isolation circuit includes a first isolation circuit and a second isolation circuit. The first isolation circuit is connected to a first node and a second node. The second isolation circuit includes a third terminal and a fourth terminal. The third terminal is connected to a third node between the third set of switches of the AC / AC converter and a fourth node between the fourth set of switches of the AC / AC converter. The fourth terminal is connected to a fifth conductor and a sixth conductor.

[0009] Among other features, the controller is configured to control the first AC / AC converter using a different clock than the second AC / AC converter. The AC / AC converters include a first AC / DC converter connected to the third and fourth conductors, and a second AC / DC converter connected to the fifth and sixth conductors.

[0010] Among other features, the AC / AC converter is connected to the third conductor, the fourth conductor is connected to the fifth conductor, and the AC / AC converter is connected to the sixth conductor.

[0011] Among other features, the configuration changes the circuit connection to the third, fourth, fifth, and sixth conductors to selectively switch between series and parallel configurations.

[0012] Among other features, the switches in the first and second groups are made of materials selected from the group consisting of: silicon (Si), silicon carbide (SiC), gallium nitride (GaN), diamond, gallium oxide (GaO), and aluminum nitride (AlN). The switches in the first and second groups are selected from the group consisting of: insulated-gate bipolar transistors (IGBTs), metal-oxide-semiconductor field-effect transistors (MOSFETs), gallium nitride (GaN) high electron mobility transistors (HEMTs), and junction field-effect transistors (JFETs). The switches in the first and second groups include monolithic bidirectional switches selected from the group consisting of: silicon (Si)-based lateral gallium nitride (GaN) and sapphire-based gallium nitride with a common drain terminal and dual gates. The switches in the first and second groups include monolithic bidirectional switches having a common source terminal and a single gate terminal. The switches in the first and second groups include bidirectional bipolar junction transistors (B-TRANs).

[0013] Among other features, the isolation circuit includes a transformer, which includes a first winding and a second winding, the first winding having a first end connected to a first node and a second end connected to a second node, and the second winding including a first end connected to a third conductor and a second end connected to a fourth conductor.

[0014] Among other features, the controller is configured to control a first set of switches and a second set of switches of the AC / AC converter to adjust the phase angle of the AC current supplied by the voltage source relative to the phase angle of the AC voltage supplied by the voltage source.

[0015] An on-board charging module for a vehicle includes a filter connected to a first conductor and a second conductor. The first and second conductors are connected to a voltage source. An AC / AC converter includes a first set of switches connected in series between the first and second conductors, and a second set of switches connected in series between the first and second conductors. An isolation circuit includes a first terminal and a second terminal, the first terminal being connected to a first node between the first and second sets of switches and a second node between the second and third sets of switches, and the second terminal being connected to a third and a fourth conductor. An AC / DC converter is connected to the third and fourth conductors. The filter is connected to the third and fourth conductors between the AC / DC converter and a battery. Each switch in the first and second sets of switches provides bidirectional current interruption and bipolar voltage blocking. At least two switches in the first set of switches include connected source terminals, and at least two switches in the second set of switches include connected source terminals.

[0016] An on-board charging module for a vehicle includes a filter connected to a first conductor and a second conductor, wherein the first and second conductors are connected to a voltage source. An AC / AC converter includes a first set of switches connected in series between the first and second conductors, and a second set of switches connected in series between the first and second conductors. An isolation circuit includes a first terminal and a second terminal, the first terminal being connected to a first node between the first and second sets of switches and a second node between the second and third sets of switches, and the second terminal being connected to a third and a fourth conductor. An AC / DC converter is connected to the third and fourth conductors. The filter is connected to the third and fourth conductors between the AC / DC converter and a battery. The first and second sets of switches provide bidirectional current interruption and bipolar voltage blocking. A controller is configured to control the first and second sets of switches of the AC / AC converter to adjust the phase angle of the AC current supplied by the voltage source relative to the phase angle of the AC voltage supplied by the voltage source.

[0017] Further applications of this disclosure will become apparent from the detailed description, claims, and accompanying drawings. The detailed description and specific examples are intended for illustrative purposes only and are not intended to limit the scope of this disclosure.

[0018] This disclosure includes the following examples:

[0019] Example 1. An on-board charging module for a vehicle, comprising:

[0020] A filter is connected to a first conductor and a second conductor, wherein the first conductor and the second conductor are connected to a voltage source;

[0021] An AC / AC converter includes a first set of switches and a second set of switches, the first set of switches being connected between a first conductor and a second conductor, and the second set of switches being connected between the first conductor and the second conductor, wherein the first set of switches and the second set of switches selectively implement bidirectional current interruption and bipolar voltage blocking;

[0022] An isolation circuit includes a first terminal and a second terminal, wherein the first terminal is connected to a first node between the first group of switches and a second node between the second group of switches, and the second terminal is connected to a third conductor and a fourth conductor;

[0023] An AC / DC converter is connected to the third conductor and the fourth conductor; and

[0024] A filter is connected to the third and fourth conductors between the AC / DC converter and the battery.

[0025] Example 2. The on-board charging module according to Example 1, wherein the switches in the first set of switches and the second set of switches provide bidirectional current interruption and bipolar voltage blocking.

[0026] Example 3. The on-board charging module according to Example 1, wherein the first set of switches and the second set of switches are monolithically integrated.

[0027] Example 4. The on-board charging module according to Example 1, wherein the switches in the first set of switches and the second set of switches provide unidirectional current interruption and unipolar voltage blocking.

[0028] Example 5. The on-board charging module according to Example 1 further includes a voltage absorption circuit connected in parallel to the first set of switches.

[0029] Example 6. The on-board charging module according to Example 1 further includes a power conversion circuit connected between the third conductor and the fourth conductor between the AC / DC converter and the battery, wherein the power conversion circuit is configured to filter dominant harmonic frequencies.

[0030] Example 7. The on-board charging module according to Example 1, wherein:

[0031] The AC / AC converter includes a first AC / AC converter and a second AC / AC converter. The first AC / AC converter includes a first set of switches and a second set of switches. The second AC / AC converter includes a third set of switches connected in series between the first conductor and the second conductor, and a fourth set of switches connected in series between the first conductor and the second conductor.

[0032] The isolation circuit includes:

[0033] A first isolation circuit is connected to the first node and the second node; and

[0034] The second isolation circuit includes a third terminal and a fourth terminal, the third terminal being connected to a third node between the third set of switches of the AC / AC converter and a fourth node between the fourth set of switches of the AC / AC converter, and the fourth terminal being connected to a fifth conductor and a sixth conductor.

[0035] Example 8. The on-board charging module according to Example 7 further includes a controller configured to control the first AC / AC converter using a different clock than the second AC / AC converter.

[0036] Example 9. The on-board charging module according to Example 7, wherein the AC / AC converter includes a first AC / DC converter connected to the third conductor and the fourth conductor, and a second AC / DC converter connected to the fifth conductor and the sixth conductor.

[0037] Example 10. The on-board charging module according to Example 7, wherein:

[0038] The AC / AC converter is connected to the third conductor;

[0039] The fourth conductor is connected to the fifth conductor; and

[0040] The AC / AC converter is connected to the sixth conductor.

[0041] Example 11. The on-board charging module according to Example 9 further includes a configuration changing circuit connected to the third conductor, the fourth conductor, the fifth conductor, and the sixth conductor to selectively switch between a series configuration and a parallel configuration.

[0042] Example 12. The on-board charging module according to Example 1, wherein the switches in the first set of switches and the second set of switches are made of a material selected from the group consisting of: silicon (Si), silicon carbide (SiC), gallium nitride (GaN), diamond, gallium oxide (GaO), and aluminum nitride (AlN).

[0043] Example 13. The on-board charging module according to Example 1, wherein the switches in the first group of switches and the second group of switches are selected from the group consisting of: insulated gate bipolar transistor (IGBT), metal oxide semiconductor field-effect transistor (MOSFET), gallium nitride (GaN) high electron mobility transistor (HEMT) and junction field-effect transistor (JFET).

[0044] Example 14. The on-board charging module according to Example 1, wherein the switches in the first group of switches and the second group of switches include monolithic bidirectional switches selected from the group consisting of silicon (Si)-based lateral gallium nitride (GaN) and sapphire-based gallium nitride having a common drain terminal and dual gates.

[0045] Example 15. The on-board charging module according to Example 1, wherein the switches in the first group of switches and the second group of switches include monolithic bidirectional switches having a common source terminal and a single gate terminal.

[0046] Example 16. The on-board charging module according to Example 1, wherein the switches in the first set of switches and the second set of switches include bidirectional bipolar junction transistors (B-TRAN).

[0047] Example 17. The on-board charging module according to Example 1, wherein the isolation circuit includes a transformer, the transformer including a first winding and a second winding, the first winding having a first end connected to the first node and a second end connected to the second node, the second winding including a first end connected to the third conductor and a second end connected to the fourth conductor.

[0048] Example 18. The on-board charging module according to Example 1 further includes a controller configured to control the first set of switches and the second set of switches of the AC / AC converter to adjust the phase angle of the AC current supplied by the voltage source relative to the phase angle of the AC voltage supplied by the voltage source.

[0049] Example 19. An on-board charging module for a vehicle, comprising:

[0050] A filter is connected to a first conductor and a second conductor, wherein the first conductor and the second conductor are connected to a voltage source;

[0051] An alternating current (AC) / AC converter includes a first set of switches connected in series between a first conductor and a second conductor, and a second set of switches connected in series between the first conductor and the second conductor;

[0052] An isolation circuit includes a first terminal and a second terminal, wherein the first terminal is connected to a first node between the first group of switches and a second node between the second group of switches, and the second terminal is connected to a third conductor and a fourth conductor;

[0053] An AC / DC converter is connected to the third conductor and the fourth conductor; and

[0054] The filter is connected to the third and fourth conductors between the AC / DC converter and the battery.

[0055] Each of the first and second sets of switches provides bidirectional current interruption and bipolar voltage blocking, and

[0056] At least two switches in the first group of switches include connected source terminals, and at least two switches in the second group of switches include connected source terminals.

[0057] Example 20. An on-board charging module for a vehicle, comprising:

[0058] A filter is connected to a first conductor and a second conductor, wherein the first conductor and the second conductor are connected to a voltage source;

[0059] An alternating current (AC) / AC converter includes a first set of switches connected in series between a first conductor and a second conductor, and a second set of switches connected in series between the first conductor and the second conductor, wherein the first set of switches and the second set of switches provide bidirectional current interruption and bipolar voltage blocking;

[0060] An isolation circuit includes a first terminal and a second terminal, wherein the first terminal is connected to a first node between the first group of switches and a second node between the second group of switches, and the second terminal is connected to a third conductor and a fourth conductor;

[0061] An AC / DC converter is connected to the third conductor and the fourth conductor; and

[0062] The filter, the third conductor and the fourth conductor connected between the AC / DC converter and the battery, and

[0063] The controller is configured to control the first set of switches and the second set of switches of the AC / AC converter to adjust the phase angle of the AC current supplied by the voltage source relative to the phase angle of the AC voltage supplied by the voltage source. Attached Figure Description

[0064] This disclosure will be more fully understood based on the detailed description and accompanying drawings, in which:

[0065] Figure 1 This is a functional block diagram of an example of an onboard battery charging module;

[0066] Figure 2 This is a functional block diagram of an example of an on-board battery charging module according to the present disclosure;

[0067] Figure 3 This is an electrical schematic diagram of an example of a bidirectional switch in an AC / AC converter according to this disclosure;

[0068] Figures 4A to 4C This is an electrical schematic diagram of an example of a two-way switch according to this disclosure;

[0069] Figures 5A to 5C This is an electrical schematic diagram of another example of a bidirectional switch according to this disclosure;

[0070] Figure 6 This is an electrical schematic diagram of an example of an on-board charging module based on this disclosure;

[0071] Figures 7A to 7D The illustration is based on this disclosure. Figure 6 A graph showing the line current, phase voltage, power, and transformer voltage of the on-board charging module;

[0072] Figure 8 The present disclosure provides an electrical schematic diagram of an example on-board charging module, which includes a parallel AC / AC converter, an independent transformer, and a parallel rectifier.

[0073] Figure 9 The present disclosure provides an electrical schematic diagram of an example on-board charging module, which includes a parallel AC / AC converter, a series-connected transformer output, and a single rectifier.

[0074] Figure 10 The electrical schematic diagram is based on an example of an on-board charging module disclosed herein, which includes a parallel AC / AC converter and a series / parallel configuration changing circuit; and

[0075] Figure 11 This is an electrical schematic diagram of an example circuit for filtering out the dominant harmonic frequency components of an input electrical signal according to the present disclosure.

[0076] In the accompanying drawings, reference numerals may be used repeatedly to identify similar and / or identical elements. Detailed Implementation

[0077] Although this disclosure describes an on-board charging module for a vehicle, the on-board charging module can be used in other mobile or stationary applications.

[0078] Some on-board battery charging modules (OBCMs) require a large number of stages, which reduces efficiency. One of these stages includes a power factor control (PFC) circuit, which includes a large-capacity capacitor with a large size / volume. This disclosure relates to an on-board battery charging module with fewer stages and without a separate PFC circuit or a large-capacity capacitor in the PFC circuit. The on-board battery charging module includes switches that support bidirectional current interruption capability and bipolar voltage blocking capability.

[0079] In some examples, the on-board battery charging module includes a single-stage AC / DC converter configuration. The AC / DC converter includes multiple controllable switches with bidirectional current interruption capability and bipolar voltage blocking capability. In some examples, the multiple controllable switches are monolithically integrated in the same package. In some examples, the multiple controllable switches are capable of interrupting current in one direction using unipolar voltage blocking capability.

[0080] In some examples, multiple controllable switches are connected in parallel with a voltage absorption circuit configured to absorb voltage overshoot. In some examples, the output port of the on-board battery charging module is connected to a power conversion system to filter out the dominant harmonic frequency components of the input electrical signal.

[0081] In some examples, at least one port of the on-board battery charging module drives a transformer winding. In some examples, the on-board battery charging module drives multiple transformer windings connected in series. In some examples, multiple ports are connected in parallel or in series, with each port driving a transformer winding.

[0082] Single-stage power conversion improves overall efficiency and eliminates the need for large-capacity PFC capacitors. The reduced number of components decreases the cost and size of the on-board battery charging module. The on-board battery charging module achieves high power density, improved reliability, and is inherently bidirectional.

[0083] Now for reference Figure 1 The on-board battery charging module (OBCM) 12 for a vehicle 10 including an electric propulsion motor (not shown) includes a filter 14, such as one connected to the mains power supply AC voltage (V). G The passive or active filter is used. A rectification and power factor control (PFC) circuit 18 performs AC-to-DC conversion and PFC. A DC / AC converter 22 receives the output of the rectification and PFC circuit 18. An isolation barrier 26 (such as one or more transformers) is arranged between the DC / AC converter 22 and the AC / DC converter 30. A filter 34 is arranged between the AC / DC converter 30 and a load 38, such as a battery module or battery pack. Because AC / DC rectification is performed more than once, the OBCM 12 has multiple stages.

[0084] Now for reference Figure 2 The on-board battery charging module 112 for a vehicle 110 including an electric propulsion motor (not shown) includes a filter 114, such as one connected to the mains power supply AC voltage (V). G The AC / AC converter 118 converts the frequency of the AC voltage to another frequency. An isolation circuit 122 (such as one or more transformers) is arranged between the AC / AC converter 118 and the AC / DC converter 126 that performs rectification. A filter 130 is arranged between the AC / DC converter 126 and a load 138, such as a battery module or battery pack. Since AC / DC rectification is performed once, the OBCM 12 is a single-stage filter.

[0085] Now for reference Figure 3 The AC / AC converter 118 of the on-board battery charging module includes a bidirectional switch Q. A1 and Q B1 And Q A2 and Q B2 bidirectional switch Q A1 and Q B1 (and bidirectional switch Q) A2 and Q B2 A two-way switch Q is connected in series between conductors 140 and 142. A1 and Q B1 The node between them is connected to the first terminal of impedance Z1. Impedance Z1 is connected to the first terminal of impedance Z2 and the first end of the first winding of transformer 150. Bidirectional switch Q A2 and Q B2 The node between them is connected to the second terminal of impedance Z2 and the second terminal of the first winding of transformer 150. The first terminal of the second winding of transformer 150 is connected to the first terminal of impedance Z3.

[0086] exist Figures 4A to 4C The image shows an example of a bidirectional switch. Switch Q A1 Q A2 Q B1 , and Q B2 Each of these may include one or more switches connected in series or parallel to support bidirectional operation and / or anticipated current loads. Figure 4A In the middle, switch Q A1 Q A2 Q B1 , and Q B2 Including the first switch SW connected in series + Second switch SW - Switch SW + The source is connected to switch SW - The source. Switch SW+ and SW - Includes a body diode, which comprises an anode and a cathode, with the anode connected to the switch SW. + and SW - The source and cathode are connected to the switch SW. + and SW - The drain. In some examples, the first switch SW + Second switch SW - Relative to each other, the source poles are connected together.

[0087] exist Figure 4B middle, Figure 4A The N sets of bidirectional switches (e.g., switch SW) 1+ and SW 1- Switch SW 2+ and SW 2- ... and switch SW N+ and SW N- Parallel connection is used to achieve higher power applications with higher current amplitudes, where N is an integer greater than one. Figure 4C In this circuit, a voltage snubber circuit 153, such as a voltage clamp, can be connected across the switch and is used to absorb voltage overshoot. In some examples, the voltage snubber circuit 153 includes a voltage clamp or a Zener diode.

[0088] exist Figure 5A In a transistor, such as a bipolar junction transistor (B-TRAN), the switch SW includes multiple gate terminals (B1 and B2) for controlling power flow in both directions. Figure 5B In the middle, there are N bidirectional switches (e.g., switch SW1, switch SW2, ..., and SW...). N It includes gate terminal B 1A and B 2A B 1B and B 2B ... and B 1N and B 2N Parallel connection is used to achieve higher power applications with higher current amplitudes. Figure 5C In this circuit, voltage absorption circuit 153 can be used to absorb voltage overshoot as described above.

[0089] In some examples, the bidirectional switch is made of silicon (Si), silicon carbide (SiC), gallium nitride (GaN), diamond, gallium oxide (GaO), aluminum nitride (AlN), or other wide-bandgap or ultra-wide-bandgap semiconductors with suitable voltage and current ratings.

[0090] In some examples, the bidirectional switch is selected from the group consisting of: insulated-gate bipolar transistors (IGBTs), metal-oxide-semiconductor field-effect transistors (MOSFETs), gallium nitride (GaN) high electron mobility transistors (HEMTs), or junction field-effect transistors (JFETs) with lateral, longitudinal, or cascode structures. In some examples, the bidirectional switch includes a monolithic bidirectional switch selected from the group consisting of: silicon (Si)-based lateral GaN or sapphire-based GaN with a common drain terminal and dual gates.

[0091] In some examples, the bidirectional switch includes a monolithic bidirectional switch having a common source terminal and a single gate terminal. In some examples, the bidirectional switch includes a monolithic bidirectional switch (including a bidirectional bipolar junction transistor (B-TRAN)).

[0092] Now for reference Figures 6 to 7D An example of an on-board charging module is shown. The controller 218 is configured to direct power to a bidirectional switch 222 connected between conductors 223 and 225 or between conductors 227 and 229 (e.g., the switch SW of the AC / AC converter 118, respectively). 1A SW 1B SW 2A SW 2B SW 3A SW 3B SW 4A and SW 4B The control terminals of the AC / DC converter 126 (SW5, SW6, SW7 and SW8) supply signals.

[0093] The bidirectional switch SW of the AC / AC converter 118 1A SW 1B and SW 2A SW 2B The first node between them, and the bidirectional switch SW of the AC / AC converter 118. 3A SW 3B and SW 4A SW 4B The second node between the two is connected to the isolation circuit 122. The isolation circuit 122 is connected to the third node between switches SW5 and SW6 of the AC / DC converter 126 and the third node between switches SW7 and SW8 of the AC / DC converter 126. The filter 130 is shown as including a capacitor C1 and a resistor R2. The resistor R3 is shown as being connected between the battery 138 and the conductor 229.

[0094] exist Figures 7A to 7DThe diagram in Figure 7 illustrates the line current, phase voltage, power, and transformer voltage of the on-board charging module. The line current and phase voltage are in phase. In some examples, the frequency of the output power is twice the frequency of the line current and phase voltage.

[0095] Now for reference Figure 8 OBCMs, including bidirectional switches, can have different topologies. Figure 8 The image shows an on-board charging module comprising a standalone AC / AC converter, a standalone transformer, and a parallel rectifier (or AC / DC converter). The output of filter 310 is connected in parallel to the AC / AC converter. The AC / AC converter includes a first AC / AC converter 311 and a second AC / AC converter 313, each converter including multiple sets of bidirectional switches (e.g., Q...). A1 and Q B1 With Q A2 and Q B2 ; and Q A3 and Q B3 With Q A4 and Q B4 The first AC / AC converter 311 (including bidirectional switch group Q) A1 and Q B1 And Q A2 and Q B2 The output of the second AC / DC converter 313 is input to the first isolation circuit 312 and the first AC / DC converter 314. The output of the second AC / DC converter 313 (e.g., a bidirectional switch group Q) is input to the first isolation circuit 312 and the first AC / DC converter 314. A3 and Q B4 And Q A4 and Q B4 The output of the first AC / DC converter 314 is input to the second isolation circuit 326 and the second AC / DC converter 328. The outputs of the first AC / DC converter 314 and the second AC / DC converter 328 are connected in parallel to the input of the filter 318. The output of the filter 318 is input to the battery 322. Controller 218 ( Figure 6 The first and second AC / AC converters and / or the first and second AC / DC converters are controlled using the same or different clocks to provide interleaving.

[0096] Now for reference Figure 9 This diagram illustrates an on-board charging module comprising a transformer output connected in series and a single rectifier (or AC / DC converter). The output of filter 310 is connected in parallel to a first AC / AC converter 311 and a second AC / AC converter 313. The output of the first AC / AC converter 311 is input to a first isolation circuit 312. The output of the second AC / AC converter 313 is input to a second isolation circuit 326.

[0097] The outputs of the first isolation circuit 317 and the second isolation circuit 326 are connected in series to the first AC / DC converter 314. In other words, the first output of the first isolation circuit 312 is input to the first AC / DC converter 314. The second output of the first isolation circuit 312 is connected to the first output of the second isolation circuit 326. The second output of the second isolation circuit 326 is input to the first AC / DC converter 314. The output of the first AC / DC converter 314 is input to a filter 318. The output of the filter 318 is input to the battery 322. Figure 9 The configuration shown is set to use a single high-voltage (HV) rectifier (or AC / DC converter) to output a higher voltage. Controller 218 ( Figure 6 The first and second AC / AC converters and / or the first and second AC / DC converters are controlled using the same or different clocks to provide interleaving.

[0098] Now for reference Figure 10 This illustrates an on-board charging module with a series / parallel reconfigurable output. The output of filter 310 is connected in parallel to the bidirectional switch group Q as shown above. A1 and Q B1 With Q A2 and Q B2 and bidirectional switch group Q A3 and Q B3 With Q A4 and Q B4 Bidirectional switch group Q A1 and Q B1 With Q A2 and Q B2 The output is input to the first isolation circuit 312 and the first AC / DC converter 314. Bidirectional switch group Q A3 and Q B3 With Q A4 and Q B4 The output of the first AC / DC converter 314 is input to the second isolation circuit 326 and the second AC / DC converter 328. The output of the first AC / DC converter 314 and the output of the second AC / DC converter 328 are connected to a series / parallel configuration changing circuit 340, which is configured to switch between parallel and series configurations. For example, the series / parallel configuration changing circuit 340 may include a switch array for selectively switching the configuration from series (e.g., ...). Figure 8 The series / parallel configuration can be changed to parallel (e.g., Figure 7) or vice versa. The output of the series / parallel configuration change circuit 340 is input to filter 318. The output of filter 318 is input to battery 322. Controller 218 ( Figure 6The first and second AC / AC converters and / or the first and second AC / DC converters are controlled using the same or different clocks to provide interleaving.

[0099] Now for reference Figure 11 The power conversion system 410 is arranged between the AC / DC converter 126 and the battery 322. The power conversion system 410 includes switches SW9 and SW17 arranged between conductors 415 and 417. 10 Inductor L r The first terminal is connected to switches SW9 and SW 10 The nodes between them. Inductor L r The second terminal is connected to capacitor C r The first terminal. Capacitor C r The second terminal is connected to conductor 417. The power conversion system 410 filters out the dominant harmonic frequency components of the input electrical signal.

[0100] The foregoing description is merely illustrative in nature and is in no way intended to limit this disclosure, its application, or use. The broad teachings of this disclosure can be implemented in various forms. Therefore, while this disclosure includes specific examples, its true scope should not be so limited, as other modifications will become apparent upon examination of the drawings, specification, and appended claims. It should be understood that one or more steps within a method may be performed in a different order (or simultaneously) without altering the principles of this disclosure. Furthermore, while each embodiment is described above as including specific features, any one or more of those features described with respect to any embodiment of this disclosure may be implemented in any other example and / or combined with features of any other embodiment, even if such combination is not explicitly described. In other words, the described examples are not mutually exclusive, and the arrangement of one or more embodiments relative to each other remains within the scope of this disclosure.

[0101] Spatial and functional relationships between components (e.g., between modules, circuit elements, semiconductor layers, etc.) are described using various terms, including “connection,” “joint,” “coupled,” “proximity,” “adjacent,” “on top of,” “above,” “below,” and “set.” Unless explicitly stated as “direct,” the relationship between the first and second components described in the above disclosure can be a direct relationship, where no other intermediate components exist between the first and second components, but it can also be an indirect relationship, where one or more intermediate components exist (spatially or functionally) between the first and second components. As used herein, the phrase “at least one of A, B, and C” should be interpreted as meaning logically (A or B or C) using the non-exclusive logical “OR,” and should not be interpreted as meaning “at least one of A, at least one of B, and at least one of C.”

[0102] In the accompanying drawings, the direction of the arrows, as indicated by the arrows, typically illustrates the flow of information (e.g., data or instructions) of interest to the illustration. For example, when components A and B exchange various types of information, but the information transmitted from component A to component B is relevant to the illustration, the arrow can point from component A to component B. This unidirectional arrow does not imply that no other information is transmitted from component B to component A. Furthermore, for information sent from component A to component B, component B can send a request for or confirmation of receipt of that information to component A.

[0103] In this application, including the following definitions, the term "module" or "controller" may be replaced by the term "circuit". The term "module" may refer to, be part of, or include the following: application-specific integrated circuit (ASIC); digital, analog, or mixed-signal analog / digital discrete circuit; digital, analog, or mixed-signal analog / digital integrated circuit; combinational logic circuit; field-programmable gate array (FPGA); processor circuitry (shared, dedicated, or grouped) that executes code; memory circuitry (shared, dedicated, or grouped) that stores code executed by the processor circuitry; other suitable hardware components that provide the described functionality; or combinations of some or all of the foregoing, such as in a system-on-a-chip.

[0104] This module may include one or more interface circuits. In some examples, the interface circuits may include wired or wireless interfaces connected to a local area network (LAN), the Internet, a wide area network (WAN), or a combination thereof. The functionality of any given module of this disclosure can be distributed among multiple modules connected via the interface circuits. For example, multiple modules can allow for load balancing. In a further example, a server (also referred to as a remote or cloud) module may perform some functions on behalf of a client module.

[0105] The term "code" as used above can include software, firmware, and / or microcode, and can refer to programs, routines, functions, classes, data structures, and / or objects. The term "shared processor circuit" covers a single processor circuit that executes some or all of the code from multiple modules. The term "group processor circuit" covers a processor circuit that, in conjunction with additional processor circuitry, executes some or all of the code from one or more modules. References to multiple processor circuits cover multiple processor circuits on discrete dies, multiple processor circuits on a single die, multiple cores of a single processor circuit, multiple threads of a single processor circuit, or a combination of the above. The term "shared memory circuit" covers a single memory circuit that stores some or all of the code from multiple modules. The term "group memory circuit" covers a memory circuit that, in conjunction with additional memory, stores some or all of the code from one or more modules.

[0106] The term "memory circuit" is a subset of the term "computer-readable medium." As used herein, the term "computer-readable medium" does not cover transient electrical or electromagnetic signals propagating through a medium (such as on a carrier wave); therefore, the term "computer-readable medium" can be considered tangible and non-transitory. Non-limiting examples of non-transitory, tangible computer-readable media are non-volatile memory circuits (such as flash memory circuits, erasable programmable read-only memory circuits, or mask read-only memory circuits), volatile memory circuits (such as static random access memory circuits or dynamic random access memory circuits), magnetic storage media (such as analog or digital magnetic tape or hard disk drives), and optical storage media (such as CDs, DVDs, or Blu-ray discs).

[0107] The apparatus and methods described in this application can be implemented, partially or entirely, by a special-purpose computer created by configuring a general-purpose computer to execute one or more specific functions embodied in a computer program. The aforementioned function blocks, flowchart components, and other elements serve as a software specification that can be routinely translated into a computer program by a skilled technician or programmer.

[0108] A computer program includes processor-executable instructions stored on at least one non-transitory tangible computer-readable medium. A computer program may also include or depend on stored data. A computer program may encompass a basic input / output system (BIOS) that interacts with the hardware of a special-purpose computer, device drivers that interact with specific devices of the special-purpose computer, one or more operating systems, user applications, background services, background applications, etc.

[0109] Computer programs may include: (i) descriptive text to be parsed, such as HTML (Hypertext Markup Language), XML (Extensible Markup Language), or JSON (JavaScript Object Notation); (ii) assembly code; (iii) object code generated from source code by a compiler; (iv) source code for execution by an interpreter; (v) source code for compilation and execution by a just-in-time (JIT) compiler; and so on. As an example only, source code can be written using syntax from languages ​​including: C, C++, C#, Objective C, Swift, Haskell, Go, SQL, R, Lisp, etc. Fortran, Perl, Pascal, Curl, OCaml, HTML5 (Hypertext Markup Language 5th Edition), Ada, ASP (Active Server Pages), PHP (PHP: Hypertext Preprocessor), Scala, Eiffel, Smalltalk, Erlang, Ruby, Visual Lua, MATLAB, SIMULINK and

Claims

1. An on-board charging module for a vehicle, comprising: A filter is connected to a first conductor and a second conductor, wherein the first conductor and the second conductor are connected to a voltage source; An AC / AC converter includes a first set of switches and a second set of switches, the first set of switches being connected between a first conductor and a second conductor, and the second set of switches being connected between the first conductor and the second conductor, wherein the first set of switches and the second set of switches selectively implement bidirectional current interruption and bipolar voltage blocking; An isolation circuit includes a first terminal and a second terminal, wherein the first terminal is connected to a first node between the first group of switches and a second node between the second group of switches, and the second terminal is connected to a third conductor and a fourth conductor; An AC / DC converter is connected to the third conductor and the fourth conductor; as well as A filter is connected to the third and fourth conductors between the AC / DC converter and the battery.

2. The on-board charging module according to claim 1, wherein the switches in the first set of switches and the second set of switches provide bidirectional current interruption and bipolar voltage blocking.

3. The on-board charging module according to claim 1, wherein the first set of switches and the second set of switches are monolithically integrated.

4. The on-board charging module according to claim 1, wherein the switches in the first set of switches and the second set of switches provide unidirectional current interruption and unipolar voltage blocking.

5. The on-board charging module according to claim 1, further comprising a voltage absorption circuit connected in parallel to the first set of switches.

6. The on-board charging module of claim 1, further comprising a power conversion circuit connected between the third conductor and the fourth conductor between the AC / DC converter and the battery, wherein the power conversion circuit is configured to filter dominant harmonic frequencies.

7. The on-board charging module according to claim 1, wherein: The AC / AC converter includes a first AC / AC converter and a second AC / AC converter. The first AC / AC converter includes a first set of switches and a second set of switches. The second AC / AC converter includes a third set of switches connected in series between the first conductor and the second conductor, and a fourth set of switches connected in series between the first conductor and the second conductor. The isolation circuit includes: A first isolation circuit is connected to the first node and the second node; and The second isolation circuit includes a third terminal and a fourth terminal, the third terminal being connected to a third node between the third set of switches of the AC / AC converter and a fourth node between the fourth set of switches of the AC / AC converter, and the fourth terminal being connected to a fifth conductor and a sixth conductor.

8. The on-board charging module of claim 7, further comprising a controller configured to control the first AC / AC converter using a clock different from that of the second AC / AC converter.

9. The on-board charging module of claim 7, wherein the AC / AC converter includes a first AC / DC converter connected to the third conductor and the fourth conductor, and a second AC / DC converter connected to the fifth conductor and the sixth conductor.

10. The on-board charging module according to claim 7, wherein: The AC / AC converter is connected to the third conductor; The fourth conductor is connected to the fifth conductor; and The AC / AC converter is connected to the sixth conductor.

Images