CN111204258B - An integrated power supply and its control method - Google Patents

Abstract

The invention discloses an integrated power supply which comprises a high-voltage battery cell module assembly and a voltage management assembly, wherein the output end of the high-voltage battery cell module assembly is electrically connected with the input end of the voltage management assembly, the high-voltage battery cell module assembly comprises a high-voltage module unit and a battery cell module unit, the input end of the battery cell module unit is electrically connected with the first output end of the high-voltage module unit, the voltage of the second output end of the high-voltage module unit is higher than a first preset voltage, the voltage output by the battery cell module unit is lower than a second preset voltage, the voltage management assembly is provided with a plurality of output ends, and the voltage management assembly is used for adjusting the voltage which is supplied to a load on the output ends. The integrated power supply provided by the invention has the advantages that the integrated design of the vehicle is improved, the development of parts is optimized, the arrangement of the whole vehicle and the BOM management are optimized, the integrated power supply module can more intelligently manage the power supply of the whole vehicle, and meanwhile, the cost is reduced.

Description

An integrated power supply and its control method

technical field

The invention relates to the technical field of automotive power supplies, in particular to an integrated power supply and a control method thereof.

Background technique

It varies slightly depending on the type of electric vehicle. In a pure electric vehicle equipped with only a battery, the role of the battery is the only power source for the vehicle drive system. In a hybrid vehicle equipped with a traditional engine (or fuel cell) and a battery, the battery can not only play the role of the main power source of the vehicle drive system, but also act as an auxiliary power source. It can be seen that at low speed and starting, the battery plays the role of the main power source of the vehicle drive system; during full-load acceleration, it acts as an auxiliary power source; during normal driving, deceleration, and braking, it acts as a storage energy source Role.

With the application of intelligent driving systems and on-board electrical functions, the current vehicle has only one 12V battery compared to traditional fuel vehicles, and a high-voltage battery, USB5V power supply, 220V power socket, etc. are added, and more power sources may be added to vehicles in the future. .

The solution that has been implemented so far is to install a separate low-voltage 12V battery on the vehicle, and detect the power of the low-voltage battery through sensors. When the power is insufficient, the high-voltage battery automatically supplements the low-voltage battery, and other power sources are output from their own separate modules. The number of these components is large and the system is complex, which brings inconvenience to the design of the whole vehicle. Therefore, there is a need to provide an integrated power supply that integrates a power supply module.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an integrated power supply, improve vehicle integrated design, optimize component development, optimize vehicle layout and BOM management, and the integrated power module can manage vehicle power more intelligently while reducing costs.

For achieving the above object, the present invention provides the following scheme:

An integrated power supply, the structure comprising: a high-voltage cell module assembly and a voltage management assembly, the output end of the high-voltage cell module assembly is electrically connected with the input end of the voltage management assembly, the high-voltage cell The module assembly includes a high voltage module unit and a cell module unit, the input end of the cell module unit is electrically connected with the first output end of the high voltage module unit, and the voltage of the second output end of the high voltage module unit is higher than the first output end of the high voltage module unit A preset voltage, the voltage output by the cell module unit is lower than the second preset voltage, the voltage management component is provided with a plurality of output terminals, and the voltage management component is used to adjust the voltage on the output terminals to supply power to the load.

Optionally, the voltage management unit includes a first voltage management unit and a second voltage management unit, the output end of the cell module unit is electrically connected to the input end of the first voltage management unit, and the second voltage The input end of the management unit is electrically connected to the second output end of the high voltage module unit, and the first voltage management unit is provided with a plurality of output ends.

Optionally, the first voltage management unit has three output terminals, the output voltages of the output terminals of the first power management unit are 24V, 12V and 5V respectively, and the output voltage of the output terminal of the second voltage management unit is 220V.

Optionally, the first preset voltage ranges from 42V to 60V, and the second preset voltage is 220V.

Optionally, the integrated power supply further includes a switch assembly, the switch assembly includes a first switch, a second switch and a third switch, the input end of the cell module unit and the first output of the high voltage module unit The terminal is electrically connected through the first switch, the second output terminal of the high-voltage module unit and the second voltage management unit are electrically connected through the second switch and the third switch, the second switch is electrically connected The third switch is electrically connected to the positive pole of the output end of the high-voltage module unit, and the third switch is electrically connected to the negative pole of the high-voltage module unit.

Optionally, the integrated power supply further includes a control unit, the output ends of the control unit are respectively electrically connected to the first switch, the second switch and the third switch, and the control unit is used to control On-off of switch components.

Optionally, the first switch, the second switch and the third switch are relays.

Optionally, the first voltage management unit and the second voltage management unit are respectively provided with a first fault monitoring device and a second fault monitoring device, and the output terminal of the first fault monitoring device and the second fault monitoring device are respectively provided. The output ends of the monitoring device are all electrically connected to the input end of the control unit.

A control method for an integrated power supply, which is used to control the above-mentioned integrated power supply, specifically includes the following steps:

S100. The control unit receives the operation signal;

S200. The control unit determines the type of the operation signal, and controls the opening and closing of each switch according to the received operation signal.

Wherein, the step S200 further includes:

S201. The control unit determines the type of the operation signal, wherein the type of the operation signal is one of a sleep signal, a lower high voltage signal, an upper high voltage signal, a high voltage charging signal or a fault signal;

S202. When the control unit receives the sleep signal or the low-voltage signal, the control unit controls the first switch, the second switch and the third switch to be disconnected, and the cell module unit outputs low-voltage power through the first voltage management unit;

S203. When the control unit receives the upper high-voltage signal or the high-voltage charging signal, the control unit controls the first switch, the second switch and the third switch to close, the high-voltage module unit and the cell module unit simultaneously output high-voltage power and low-voltage power, and the high-voltage The module unit supplies power to the cell module unit;

S204. When the control unit receives the fault signal sent by the first fault monitoring device or the second fault monitoring device, the control unit controls the first switch, the second switch and the third switch to disconnect, stops outputting high voltage, and only the cell module unit The low-voltage power is output through the first voltage management unit.

According to the specific embodiments provided by the present invention, the present invention has the following technical effects:

1) An integrated power supply provided by the present invention uses an integrated design method to integrate a battery management unit, a high-voltage power supply, a 12V power supply, a 5V power supply, and a 220V power supply, and provides power to the vehicle according to different load output interfaces;

2) The low-voltage cell module unit is connected in series with the high-voltage cell module group to supplement power, eliminating the DCDC module;

3) Optimize parts development, optimize vehicle layout and BOM management, and the integrated power module can manage vehicle power more intelligently and reduce vehicle costs.

Description of drawings

In order to illustrate the technical solutions of the present invention more clearly, the following briefly introduces the accompanying drawings that are required in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

FIG. 1 is a circuit schematic diagram of an integrated power supply provided by the present invention.

FIG. 2 is a flowchart of an integrated power control method provided by the present invention.

Among them, the reference signs in the figure correspond to:

1-High voltage module unit, 2-Cell module unit, 3-Control unit, 4-First switch, 5-Second switch, 6-Third switch, 7-First power management unit, 8-Second voltage management Unit, 9-first fault monitoring device, 10-second fault monitoring device, 11-220V output terminal, 12-24V output terminal, 13-12V output terminal, 14-5V output terminal, 15- drive motor controller, 16 - Generator Controller, 17 - Air Conditioning Compressor, 18 - PTC Heater, 19 - AC Input, 20 - Compressor, 21 - Compressor Charge Input.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

The purpose of the present invention is to provide an integrated power supply, improve vehicle integrated design, optimize component development, optimize vehicle layout and BOM management, and the integrated power module can manage vehicle power more intelligently while reducing costs.

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

In this embodiment, referring to FIG. 1 , an integrated power supply includes a high-voltage cell module assembly and a voltage management assembly. The output end of the high-voltage cell module assembly is electrically connected to the input end of the voltage management assembly. The module assembly includes a high-voltage module unit 1 and a cell module unit 2. The input terminal of the cell module unit 2 is electrically connected to the first output terminal of the high-voltage module unit 1, and the voltage of the second output terminal of the high-voltage module unit 1 is higher than that of the first preset. Set the voltage, the voltage output by the cell module unit 2 is lower than the second preset voltage, the voltage management component is provided with a plurality of output terminals, and the voltage management component is used to adjust the voltage of the output terminals to supply power to the load.

Further, the voltage management unit includes a first voltage management unit 7 and a second voltage management unit 8, the output terminal of the cell module unit 2 is electrically connected to the input terminal of the first voltage management unit 7, and the input terminal of the second voltage management unit 8 is electrically connected. The terminal is electrically connected to the second output terminal of the high voltage module unit 1, and the first voltage management unit 7 is provided with a plurality of output terminals.

Further, the first voltage management unit 7 has three output terminals, the output voltages of the output terminals of the first power management unit 7 are 24V, 12V and 5V respectively, and the output voltage of the output terminal of the second voltage management unit 8 is 220V. Using the integrated design method, the battery management unit, high-voltage power supply, 12V power supply, 5V power supply, and 220V power supply are integrated, and power is provided to the vehicle according to different load output interfaces.

Further, the range of the first preset voltage is 42V˜60V, and the second preset voltage is 220V. The current high-voltage battery cell module group is divided into a high-voltage module unit 1 and a cell module unit 2, and the cell module unit 2 is used as a low-voltage module to output low-voltage electricity to the vehicle through the first management unit; the high-voltage module unit is used to output high voltage The second voltage management module outputs 220V voltage, and the high-voltage module unit supplies the drive motor controller 15, generator controller 16, air-conditioning compressor 17, and PTC heater 18 required by the original high-voltage battery cell module group. , AC charging input 19, compressor 20 and compressor charging input 21 supply power.

Further, it also includes a switch assembly, the switch assembly includes a first switch 4 , a second switch 5 and a third switch 6 , the input end of the cell module unit 2 and the first output end of the high voltage module unit 1 are electrically connected through the first switch 4 . connection, the second output terminal of the high voltage module unit 1 and the second voltage management unit 8 are electrically connected through the second switch 5 and the third switch 6, the second switch 5 is electrically connected to the positive pole of the output terminal of the high voltage module unit 1, the third The switch 6 is electrically connected to the negative pole of the high voltage module unit 1 . It also includes a control unit. The output end of the control unit 3 is electrically connected to the first switch 4, the second switch 5 and the third switch 6 respectively. The control unit 3 is used to control the on-off of the switch components to realize the control of the integrated power supply.

Further, the first switch 4, the second switch 5 and the third switch 6 are relays.

Further, the first voltage management unit 7 and the second voltage management unit 8 are respectively provided with a first fault monitoring device 9 and a second fault monitoring device 10 , the output terminal of the first fault monitoring device 9 and the output terminal of the second fault monitoring device 10 The output terminals are all electrically connected to the input terminal of the control unit 3 . The fault monitoring device is used to monitor the temperature, insulation, current value and voltage value of the voltage management unit. When the high-voltage insulation fails, the fault monitoring device detects the fault and sends a fault signal to the control unit. The control unit passes the control switch. disconnect.

A control method of an integrated power supply, which is used for controlling the above-mentioned integrated power supply, is characterized in that, it specifically includes the following steps:

S100. The control unit receives the operation signal;

S200. The control unit determines the type of the operation signal, and controls the opening and closing of each switch according to the received operation signal.

Wherein, the step S200 further includes:

S201. The control unit determines the type of the operation signal, wherein the type of the operation signal is one of a sleep signal, a lower high voltage signal, an upper high voltage signal, a high voltage charging signal or a fault signal;

S202. When the control unit receives the sleep signal or the low-voltage signal, the control unit controls the first switch, the second switch and the third switch to be disconnected, and the cell module unit outputs low-voltage power through the first voltage management unit;

S203. When the control unit receives the upper high-voltage signal or the high-voltage charging signal, the control unit controls the first switch, the second switch and the third switch to close, the high-voltage module unit and the cell module unit simultaneously output high-voltage power and low-voltage power, and the high-voltage The module unit supplies power to the cell module unit;

S204. When the control unit receives the fault signal sent by the first fault monitoring device or the second fault monitoring device, the control unit controls the first switch, the second switch and the third switch to disconnect, stops outputting high voltage, and only the cell module unit The low-voltage power is output through the first voltage management unit.

An integrated power supply provided by the present invention uses an integrated design method to integrate a battery management unit, a high-voltage power supply, a 12V power supply, a 5V power supply, and a 220V power supply, and provides power to the entire vehicle according to different load output interfaces; The core module unit is connected in series with the high-voltage cell module group to supplement power, eliminating the DCDC module; optimizing the development of components, optimizing the layout of the vehicle and BOM management, the integrated power module can manage the vehicle power more intelligently, and can reduce the vehicle cost.

In this paper, specific examples are used to illustrate the principles and implementations of the present invention. The descriptions of the above embodiments are only used to help understand the methods and core ideas of the present invention; meanwhile, for those skilled in the art, according to the present invention There will be changes in the specific implementation and application scope. In conclusion, the contents of this specification should not be construed as limiting the present invention.

Claims (8)

1. An integrated power supply is characterized by comprising a high-voltage battery cell module assembly, a voltage management unit and a switch assembly, wherein the output end of the high-voltage battery cell module assembly is electrically connected with the input end of the voltage management unit;

the high-voltage battery cell module assembly comprises a high-voltage module unit (1) and a battery cell module unit (2), wherein the input end of the battery cell module unit (2) is electrically connected with the first output end of the high-voltage module unit (1), the voltage of the second output end of the high-voltage module unit (1) is higher than a first preset voltage, the voltage output by the battery cell module unit (2) is lower than a second preset voltage, and the battery cell module unit (2) is a low-voltage module;

the voltage management unit is provided with a plurality of output ends and is used for adjusting the voltage supplied to the load by the output ends;

the voltage management unit comprises a first voltage management unit (7) and a second voltage management unit (8), the output end of the battery cell module unit (2) is electrically connected with the input end of the first voltage management unit (7), the input end of the second voltage management unit (8) is electrically connected with the second output end of the high-voltage module unit (1), and the first voltage management unit (7) is provided with a plurality of output ends;

the switch assembly comprises a first switch (4), a second switch (5) and a third switch (6), the input end of the battery core module unit (2) is connected with the first output end of the high-voltage module unit (1) through the first switch (4) in an electric connection mode, the second output end of the high-voltage module unit (1) is connected with the second voltage management unit (8) through the second switch (5) and the third switch (6) in an electric connection mode, the second switch (5) is connected with the positive electrode of the output end of the high-voltage module unit (1) in an electric connection mode, and the third switch (6) is connected with the negative electrode of the high-voltage module unit (1) in an electric connection mode.

2. An integrated power supply as claimed in claim 1, wherein the first voltage management unit (7) has three outputs, the output voltages of the first voltage management unit (7) are 24V, 12V and 5V, respectively, and the output voltage of the second voltage management unit (8) is 220V.

3. The integrated power supply of claim 1, wherein the first predetermined voltage is in a range of 42V-60V, and the second predetermined voltage is 220V.

4. An integrated power supply according to claim 1, further comprising a control unit, wherein the output end of the control unit (3) is electrically connected to the first switch (4), the second switch (5) and the third switch (6), respectively, and the control unit (3) is used for controlling the on/off of the switch assembly.

5. An integrated power supply as claimed in claim 4, wherein the first switch (4), the second switch (5) and the third switch (6) are relays.

6. An integrated power supply according to claim 5, wherein the first voltage management unit (7) and the second voltage management unit (8) are provided with a first fault monitoring device (9) and a second fault monitoring device (10), respectively, and wherein an output of the first fault monitoring device (9) and an output of the second fault monitoring device (10) are electrically connected to an input of the control unit (3).

7. A method for controlling an integrated power supply according to any one of claims 1 to 6, comprising the steps of:

s100, receiving an operation signal by a control unit;

s200, the control unit judges the type of the operation signal and controls the on and off of each switch according to the received operation signal.

8. The control method according to claim 7, wherein the step S200 further includes:

s201, the control unit judges the type of an operation signal, wherein the type of the operation signal is one of a sleep signal, a lower high-voltage signal, an upper high-voltage signal, a high-voltage charging signal or a fault signal;

s202, when the control unit receives a sleep signal or a lower high-voltage signal, the control unit controls the first switch, the second switch and the third switch to be disconnected, and the battery cell module unit outputs a low-voltage power supply through the first voltage management unit;

s203, when the control unit receives a high-voltage signal or a high-voltage charging signal, the control unit controls the first switch, the second switch and the third switch to be closed, the high-voltage module unit and the battery cell module unit simultaneously output a high-voltage power supply and a low-voltage power supply to the outside, and the high-voltage module unit supplies power to the battery cell module unit;

and S204, when the control unit receives a fault signal sent by the first fault monitoring device or the second fault monitoring device, the control unit controls the first switch, the second switch and the third switch to be switched off, the high voltage output is stopped, and only the battery cell module unit outputs the low-voltage power supply through the first voltage management unit.

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