Power module device and transport refrigeration system

Patent metadata

Field	Value
Publication number	US-11554639-B2
Application number	US-202016775813-A
Country	US
Kind code	B2
Filing date	Jan 29, 2020
Priority date	Jan 31, 2019
Publication date	Jan 17, 2023
Grant date	Jan 17, 2023

Abstract

An electrical power module and transport refrigeration system. The electrical power module is used for an apparatus powered by a battery or/and a fuel, has a working mode and includes: a DC buck module configured to step-down a DC at least provided by the battery to a low-voltage output DC for output, or/and a DC boost module configured to step-up a low-voltage input DC provided by the apparatus powered by the fuel to a high-voltage DC for output; and a control module connected to a transport refrigeration unit, and configured to, in the working mode, control the operation of the DC buck module or/and the DC boost module.

First claim

What is claimed is:

1. An electrical power module device, characterized in that the electrical power module device is used for an apparatus powered by a battery and a fuel, has a working mode and comprises:
a DC port configured to be connected to the battery to access electrical power;
a low-voltage input DC port configured to access a low-voltage DC from the apparatus and having a voltage lower than the DC provided by the battery to provide electrical power to a control module and an external device;
a DC buck module configured to step-down an input DC voltage to a low-voltage output DC for output;
a DC boost module configured to step-up a low-voltage input DC provided by the apparatus powered by the battery and the fuel to a high-voltage DC for output; and
the control module connected to the apparatus and configured to, in the working mode, control the operation of the DC buck module and the DC boost module.

2. The electrical power module device according to claim 1 , further comprising:
an AC port configured to be connected to an external AC power source to access electrical power.

3. The electrical power module device according to claim 2 , wherein the external device comprises a logic control board, a fan motor, and a valve of the apparatus.

4. The electrical power module device according to claim 2 , wherein the electrical power module device further has:
a charging mode in which the control module controls the AC accessed from the external AC power source via the AC port to charge the battery connected via the DC port; and
a standby mode in which the control module controls the low-voltage DC to be accessed via the low-voltage input DC port and then output to the external device.

5. The electrical power module device according to claim 4 , wherein the control module is configured such that:
in the working mode, when one of the AC port and the DC port is used to access electrical power, a path for accessing power from the one port is in an on-state, and a path for accessing electrical power from the other port is in an off-state; and/or
in the working mode, when the DC buck module fails to output the low-voltage output DC, the electrical power module device is switched to the standby mode.

6. The electrical power module device according to claim 2 , further comprising:
an AC/DC conversion module connected to the control module, the AC port and the DC buck module, and configured to, in the working mode, convert the AC accessed from the external AC power source via the AC port to a DC and then provide the DC to the DC buck module; and
a DC/AC conversion module connected to the control module and the DC port, having a connection port for connecting with an external apparatus, and configured to, in the working mode, convert the DC accessed via the DC port to an AC and then provide the AC to the external apparatus via the connection port.

7. The electrical power module device according to claim 6 , wherein the apparatus is a transport refrigeration unit on a transport vehicle, the external AC power source comprises a commercial power grid, and the external apparatus comprises a compressor and a compressor shell heater of the transport refrigeration unit.

8. The electrical power module device according to claim 7 , wherein the control module and the transport refrigeration unit are communicated through a bus communication connection.

9. The electrical power module device according to claim 7 , wherein the transport vehicle comprises a vehicle, an aircraft, and a watercraft, and the vehicle comprises a pure electric vehicle, a hybrid powered vehicle, a fuel powered vehicle, or a rail vehicle.

10. The electrical power module device according to claim 6 , further comprising:
at least one output port; and
at least one Insulated Gate Bipolar Transistor (IGBT) module connected to the DC port, the AC/DC conversion module or the DC boost module, and connected to the output port and configured to control a path on/off state or/and a power magnitude externally delivered to an external component via the output port by the DC provided via the DC port, the AC/DC conversion module or the DC boost module.

11. The electrical power module device according to claim 10 , wherein the external component comprises an electric heater for a transport refrigeration unit on a transport vehicle.

12. The electrical power module device according to claim 2 , further comprising:
an AC/DC conversion module connected to the control module, the AC port and the DC buck module, and configured to, in the working mode, convert the AC accessed from the external AC power source via the AC port to a DC and then provide the DC to the DC buck module; and
a DC/AC conversion module connected to the control module and the AC/DC conversion module, the DC/AC conversion module having a connection port for connecting with an external apparatus, and configured to, in the working mode, convert the DC converted by the AC/DC conversion module to an AC and then provide the AC to the external apparatus via the connection port.

13. The electrical power module device according to claim 1 , wherein the low-voltage output DC is configured to provide electrical power for the control module and the external device.

14. The electrical power module device according to claim 1 , wherein a voltage range of the battery DC and the high-voltage DC from the DC boost module is 200V˜850V, a voltage value of the low-voltage output DC is 12V, 24V or 48V, and a voltage value of the low-voltage input DC is 12V, 24V or 48V.

15. A transport refrigeration system disposed on a transport vehicle, comprising:
a transport refrigeration unit configured to provide a refrigeration environment;
a power module configured to provide power for the transport vehicle by means of a battery and a fuel; and
an electrical power module device which is connected to the power module and is configured to provide electrical power for the transport refrigeration unit, the electrical power module device including:
a DC buck module configured to step-down an input DC voltage to a low-voltage output DC for output;
a DC boost module configured to step-up a low-voltage input DC provided by an apparatus powered by the fuel to a high-voltage DC for output; and
a control module connected to the apparatus and configured to control the operation of the DC buck module and the DC boost module.

16. The transport refrigeration system according to claim 15 , wherein the electrical power module device is disposed in the transport refrigeration unit.

Assignees

• Carrier Corp

Inventors

• Zheng Pu
• Chen Linhui

Classifications

• H02J4/00

  Circuit arrangements for mains or distribution networks not specified as AC or DC; Circuit arrangements for mains or distribution networks combining AC and DC sections or sub-networks (arrangements using intermediate DC-AC-DC conversion H02J1/002; arrangements using high-voltage DC [HVDC] links H02J3/36) · CPC title

• H02J1/10 Primary

  Parallel operation of DC sources · CPC title

• B60R16/03

  for supply of electrical power to vehicle subsystems {or for (circuit arrangements for charging batteries H02J7/00)} · CPC title

• B60L1/003

  to auxiliary motors, e.g. for pumps, compressors · CPC title

• H02J7/02

  for charging batteries from AC mains by converters · CPC title