CN211554265U - Mobile power supply aging test system and digital programmable power supply thereof - Google Patents
Mobile power supply aging test system and digital programmable power supply thereof Download PDFInfo
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- CN211554265U CN211554265U CN201922069942.6U CN201922069942U CN211554265U CN 211554265 U CN211554265 U CN 211554265U CN 201922069942 U CN201922069942 U CN 201922069942U CN 211554265 U CN211554265 U CN 211554265U
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Abstract
A mobile power supply aging test system and a digital programmable power supply thereof are provided, wherein the digital programmable power supply comprises: a power supply input interface; the charging output interface is connected with the mobile power supply to be tested and used as an output port of charging voltage; the DC/DC converter outputs the power supply voltage input by the power supply input interface to the charging output interface after voltage transformation conversion; the MCU controller is used for controlling the DC/DC converter to output corresponding voltage according to the requirement of the quick charging protocol; the protocol signal module is connected with a source end protocol interface and a load end protocol interface, and the source end protocol interface and the load end protocol interface are respectively connected with the mobile power supply to be tested so as to realize data communication between the MCU controller and the mobile power supply to be tested; and the communication interface is used for realizing communication and data exchange between the MCU controller and the upper computer. The utility model relates to a fill soon and put the sending and the receiving terminal of agreement signal soon, still can communicate with the load end, according to load end demand adjustment output voltage, can realize the quick charge function of different agreements.
Description
Technical Field
The utility model relates to a power aging testing technical field, concretely relates to portable power source aging testing system and digital power able to programme thereof.
Background
With the continuous development of digital products, especially the rapid development of handheld intelligent terminals such as smart phones and tablet computers, the high-resolution and large-size display screens and multi-core operation control units applied to the digital products increase the power consumption of the digital products, and the handheld portable characteristics make the volume requirements of the products smaller and smaller, so that the service time (cruising ability) of the built-in batteries of the digital products cannot meet the use requirements of consumers. Therefore, a portable charger capable of being carried around, a so-called portable power source, is produced.
A Mobile Power supply (MPP), also called "Power Pack". A portable charger integrating power supply and charging functions can charge or supply power to digital equipment such as a mobile phone and the like at any time and any place. Generally, the lithium battery cell is used as an electricity storage unit, so that the use is convenient and fast.
Along with the popularization of the rapid charging technology in the application of the handheld intelligent terminal, the market demand of the mobile power supply (referred to as a rapid charging mobile power supply for short) with the rapid charging and rapid discharging functions is increased, and the corresponding production test aging demand is increased. The quick charging mobile power supply can be used as a source end and a load end. When the mobile power supply is connected with the quick charger for charging and energy storage, the mobile power supply belongs to a load end. When the mobile phone, the tablet personal computer and the mobile power supply are charged, the mobile phone, the tablet personal computer and the mobile power supply are loads relative to the charger; when the mobile power supply charges other loads (such as a mobile phone, a tablet computer or another mobile power supply), the mobile power supply belongs to a source end and has the function equal to that of a charger. As a test solution for the fast charging mobile power supply, a fast charger with a corresponding communication protocol is usually provided, and a voltage and current acquisition card is provided to complete a fast charging function test of the mobile power supply; the test of the rapid discharge function is completed by a decoy board with a corresponding communication protocol and a direct current electronic load together. The former is used for the charging test of the mobile power supply, and the latter is used for the discharging test. At present, few instruments specially designed for the quick charging and quick discharging function test of the mobile power supply exist, and the instruments are usually formed by simply combining the devices if any. The cost of mass production and aging test is high, and the system is relatively complex.
The existing fast-charging mobile power supply aging test scheme has the defects that the scheme mainly reflects the following aspects:
1) a charger with a corresponding quick charging protocol needs to be hung externally, and each channel is provided with one charger, so that the number of the chargers is large;
2) the protocol supported by the charger is single, and the charger cannot be compatible with the mobile power supplies with different quick charging protocols, and the charger with the corresponding protocol needs to be replaced in batches when the mobile power supplies with different protocols are tested, so that the workload is overlarge;
3) the protocol signal of the source end (charger end) and the protocol signal of the load end (mobile phone and mobile power supply) come from different devices, so that upgrading and maintenance are not convenient.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the above-mentioned problem that prior art exists, provide a portable power source aging testing system and digital programmable power supply thereof to solve the current problem that fills portable power source aging testing technique not enough soon.
In order to achieve the above object, the utility model provides a portable power source aging testing system's digital power able to programme, include:
the power supply input interface is used for being connected with an external power supply to serve as an input port of power supply voltage;
the charging output interface is used for being connected with the mobile power supply to be tested to serve as an output port of charging voltage;
the DC/DC converter is connected between the power supply input interface and the charging output interface, and is used for outputting the power supply voltage input by the power supply input interface to the charging output interface after voltage transformation conversion;
the MCU controller is connected with the DC/DC converter to control the DC/DC converter to output corresponding voltage according to the requirement of a fast charging protocol;
the protocol signal module is connected with a source end protocol interface and a load end protocol interface, and the source end protocol interface and the load end protocol interface are respectively used for being connected with the mobile power supply to be tested so as to realize data communication between the MCU controller and the mobile power supply to be tested; and
and the communication interface is connected with the MCU controller and is used for being connected with an upper computer so as to realize communication and data exchange between the MCU controller and the upper computer.
As a further preferred technical scheme of the utility model, the MCU controller is connected with PWM drive module, the MCU controller passes through PWM drive module is connected to DC converter.
As a further preferred technical scheme of the utility model, be connected with output switch on the circuit of DC/DC converter, the DC/DC converter passes through output switch is connected to the output interface that charges, output switch's break-make state is controlled by the MCU controller.
As a further preferred technical scheme of the utility model, be connected with the signal transfer switch on the agreement signal module, the agreement signal module passes through the signal transfer switch is connected to source end protocol interface with load end protocol interface, through switching the signal transfer switch makes with selectivity the source end protocol interface or load end protocol interface with agreement signal module intercommunication.
As a further preferred technical scheme of the utility model, be connected with address switch on the MCU controller, address switch is used for setting up the communication address that MCU controller and host computer that correspond carry out communication connection.
As a further preferred technical scheme of the utility model, communication interface is the RS-485 interface, the RS-485 interface passes through the RS485 bus and connects the host computer.
The utility model also provides a portable power source aging testing system, including above-mentioned arbitrary item portable power source aging testing system's digital power able to programme.
The utility model discloses a portable power source aging testing system and digital programmable power source thereof through adopting above-mentioned technical scheme, can reach following beneficial effect:
1) the utility model discloses MCU controller in the digital programmable power supply of portable power source aging testing system can be regarded as the sending and receiving terminal of fast charge and fast discharge agreement signal simultaneously, can also communicate with the load end, adjusts output voltage according to the demand of load end, can realize the quick charge function of different agreements;
2) the utility model discloses MCU controller in the digital programmable power supply of portable power source aging testing system can also communicate with the source end, requests the source end to output corresponding voltage as required, and then cooperates the electronic load module to carry out the discharge test to the source end;
3) the utility model discloses a source end agreement signal and load end agreement signal are controlled by portable power source able to programme of digital of aging testing system, are convenient for upgrade and maintain.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a system block diagram of an example of a digital programmable power supply of the mobile power supply aging test system of the present invention;
fig. 2 is a system block diagram of a mobile power supply aging test system.
The purpose of the present invention is to provide a novel and improved method and apparatus for operating a computer.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description. In the preferred embodiments, the terms "upper", "lower", "left", "right", "middle" and "a" are used for the sake of clarity only, and are not intended to limit the scope of the invention, its relative relationship between the terms and their derivatives, and the scope of the invention should be understood as being limited by the claims.
As shown in fig. 1, the utility model provides a digital programmable power supply of portable power source aging testing system, it includes:
the power supply input interface is used for being connected with an external power supply to serve as an input port of power supply voltage;
the charging output interface is used for being connected with the mobile power supply to be tested to serve as an output port of charging voltage and is used for being connected to a VBUS pin of a charging interface of the mobile power supply to be tested in a charging mode, the charging interface of the mobile power supply comprises a power transmission pin and a communication protocol signal pin, and the VBUS pin is the power transmission pin.
The DC/DC converter is connected between the power supply input interface and the charging output interface, and is used for outputting the power supply voltage input by the power supply input interface to the charging output interface after voltage transformation conversion;
the MCU controller is connected with the DC/DC converter to control the DC/DC converter to output corresponding voltage according to the requirement of a fast charging protocol;
a protocol signal module connected with the MCU controller, the protocol signal module is connected with a source end protocol interface and a load end protocol interface, the source end protocol interface and the load end protocol interface are respectively used for connecting with a mobile power supply to be tested, the protocol signal is the key for realizing quick charging and quick discharging, the MCU controller directly generates or analyzes the signal, when the charging mode is set, the protocol signal module is used as a source end and communicates with the mobile power supply to be tested through a source end protocol interface, when the mobile power supply is in the discharging mode, the protocol signal module is used as a load end and is communicated with the mobile power supply to be tested through a load end protocol interface, thereby realizing the data communication between the MCU controller and the mobile power supply to be tested, through software programming, the protocol signal module can be compatible with a quick charging protocol commonly seen in the prior art, such as: QC2.0, QC3.0, QC4.0, PD2.0, PD3.0 and huashi SCP, FCP, etc.; and
and the communication interface is connected with the MCU controller and is used for being connected with an upper computer so as to realize communication and data exchange between the MCU controller and the upper computer.
When the charging interface and the discharging interface of the mobile power supply to be tested are not designed in common, the charging interface is connected with the source-end protocol interface, the discharging interface is connected with the load-end protocol interface, and the signal switch is selectively switched to the source-end protocol interface or the load-end protocol interface according to the charging, discharging and power-on modes; when the charging interface and the discharging interface of the mobile power supply to be tested are designed in a shared mode, the signal change-over switch is always switched to the load end protocol interface, the load end protocol interface is connected with the charging and discharging common interface of the mobile power supply to be tested, and the MCU controller can set the source end protocol or the load end protocol according to the charging and discharging state of the upper computer instruction.
The MCU controller is connected with a PWM driving module, the MCU controller is connected to the DC/DC converter through the PWM driving module, and the PWM driving module is responsible for amplifying a PWM signal sent by the MCU controller so as to ensure reliable driving of a switch MOS tube in the DC/DC converter.
The circuit of the DC/DC converter is connected with an output switch, the DC/DC converter is connected to the charging output interface through the output switch, the on-off state of the output switch is controlled by the MCU controller, namely the MCU controller controls the on-off state of the charging output interface by controlling the output switch, for example, when the charging of the mobile power supply is completed in a charging mode or the charging mode is changed into a discharging mode, the charging output interface needs to be turned off.
The protocol signal module is connected with a signal transfer switch, the protocol signal module is connected to the source end protocol interface and the load end protocol interface through the signal transfer switch, the signal transfer switch is a single-pole double-throw analog switch, the source end protocol interface or the load end protocol interface is selectively communicated with the protocol signal module by switching the signal transfer switch, and the communication circuit of the protocol signal module is switched by adopting the signal transfer switch, so that the I/O port resource of the MCU controller can be saved.
In specific implementation, the MCU controller is connected with an address switch, the address switch is used for setting a communication address for the corresponding MCU controller to be in communication connection with the upper computer, and when the aging test system is connected with a plurality of digital programmable power supplies to simultaneously detect a plurality of mobile power supplies to be tested, each digital programmable power supply must have a unique address, otherwise, a communication error will occur.
Preferably, when the communication interface is networked by adopting an RS485 bus, the communication interface is an RS-485 interface, the RS-485 interface is connected with the upper computer through the RS485 bus, and as a standard interface used for serial communication of the upper computer is usually an RS-232 standard, a photoelectric isolation converter for mutual conversion between RS232 and RS485 is required to be used between the RS485 bus and the upper computer in the aging test system. Of course, the communication interface may also use a CAN bus for networking, which is not described in detail herein.
When the mobile power supply supplies power to other portable terminals, the mobile power supply needs to be charged firstly and stores electric energy, so that the mobile power supply has two functions of charging and discharging. During production test, both the charging function and the discharging function are tested.
The utility model also provides a portable power source aging testing system, including above-mentioned arbitrary item portable power source aging testing system's digital power able to programme.
In order to make those skilled in the art further understand the technical solution of the present invention, the mobile power source aging test system including the digital programmable power source of the present invention is illustrated below by way of example.
Fig. 2 shows a system block diagram of the mobile power supply aging test system, and the principles of the present invention are further described below with reference to the system block diagram.
In the mobile power supply aging test system, the digital programmable power supply mainly realizes the charging test of the mobile power supply, and the discharging test is completed by a load module, which belongs to the prior art and is not described herein. Whether the charging test or the discharging test is carried out, the communication between the system and the mobile power supply is realized by the digital programmable power supply.
In the mobile power supply aging test system, an input interface of a tested mobile power supply is connected with a charging interface, and an output interface is connected with a discharging interface, namely the mobile power supply in the embodiment is designed to be not shared by the charging interface and the discharging interface; the charging interface is connected with a charging output interface for providing charging voltage in the digital programmable power supply and a source end protocol interface for sending protocol signals, and the discharging interface is connected with a load module for discharging test and a load end protocol interface for sending protocol signals in the digital programmable power supply; the upper computer is in communication connection with a communication interface of the digital programmable power supply, the upper computer adopts a standard RS232 interface, the communication interface is an RS485 interface, a photoelectric isolation converter 1 for mutually converting RS232 and RS485 is required to be used between an RS485 bus for connecting the RS485 interface and the upper computer in the aging test system, and a communication line between load modules of the upper computer is connected with a photoelectric isolation converter 2.
The power supply input interface of the digital programmable power supply is connected with an external 24V direct-current power supply, the power supply voltage of the digital programmable power supply is used as the working voltage of the digital programmable power supply, and meanwhile, the mobile power supply is charged through the charging output interface after being subjected to voltage transformation processing by the DC/DC converter in a charging mode.
In the charging mode, the load module stops working, and the digital programmable power supply independently completes the charging function test of the mobile power supply. When the discharge function of the mobile power supply is tested, the system is switched to a discharge mode, the output of the charging output interface of the digital programmable power supply is cut off by the output switch, the communication is synchronously switched to a load end protocol, namely, the signal switch is switched to the load end protocol interface, and the mobile power supply is communicated with the system according to the parameters set by the upper computer to request for outputting corresponding voltage. Meanwhile, the load module is communicated with an upper computer through the photoelectric isolation converter 2, carries out pulling load according to parameters issued by the upper computer, and uploads voltage and current parameters output by the mobile power supply to the upper computer. In the discharging mode, the digital programmable power supply and the load module work cooperatively, namely the digital programmable power supply is responsible for processing the fast charging protocol signal, and the digital programmable power supply is responsible for discharging.
In the mobile power supply aging test system, the digital programmable power supply mainly has three functions:
firstly, voltage conversion is realized, and the voltage of a 24V direct-current power supply is converted into a voltage value required by charging of a mobile power supply to be tested; secondly, the digital programmable power supply is communicated with a tested mobile power supply to realize the sending and analysis of a quick charging and quick discharging protocol signal, and the digital programmable power supply is used for controlling the output voltage of the digital programmable power supply and the discharging output voltage of the mobile power supply; the last function is to communicate with the monitoring computer, receive the instruction sent by the monitoring computer, and upload the output voltage and current data to the monitoring computer.
The MCU controller in the digital programmable power supply is used as a transmitting and receiving end of a fast charging and fast discharging protocol signal at the same time, and not only can communicate with a load end, but also can adjust output voltage according to the requirement of the load end, thereby realizing the fast charging function of different protocols; the device can also communicate with the source end to request the source end to output corresponding voltage according to requirements, and then the device is matched with the electronic load module to perform discharge test on the source end.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention. For example, the digital programmable power module and the load module of the present invention may be single-channel or multi-channel. The bus architecture CAN be an RS485 bus or a CAN bus.
Although specific embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are merely examples and that many changes and modifications may be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims.
Claims (7)
1. A digital programmable power supply of a mobile power supply aging test system is characterized by comprising:
the power supply input interface is used for being connected with an external power supply to serve as an input port of power supply voltage;
the charging output interface is used for being connected with the mobile power supply to be tested to serve as an output port of charging voltage;
the DC/DC converter is connected between the power supply input interface and the charging output interface, and is used for outputting the power supply voltage input by the power supply input interface to the charging output interface after voltage transformation conversion;
the MCU controller is connected with the DC/DC converter to control the DC/DC converter to output corresponding voltage according to the requirement of a fast charging protocol;
the protocol signal module is connected with a source end protocol interface and a load end protocol interface, and the source end protocol interface and the load end protocol interface are respectively used for being connected with the mobile power supply to be tested so as to realize data communication between the MCU controller and the mobile power supply to be tested; and
and the communication interface is connected with the MCU controller and is used for being connected with an upper computer so as to realize communication and data exchange between the MCU controller and the upper computer.
2. The digital programmable power supply of the mobile power supply aging test system according to claim 1, wherein the MCU controller is connected with a PWM driving module, and the MCU controller is connected to the DC/DC converter through the PWM driving module.
3. The digital programmable power supply of the mobile power supply aging test system according to claim 1, wherein an output switch is connected to a line of the DC/DC converter, the DC/DC converter is connected to the charging output interface through the output switch, and an on-off state of the output switch is controlled by the MCU controller.
4. The digital programmable power supply of the mobile power supply aging test system according to claim 1, wherein a signal switch is connected to the protocol signal module, the protocol signal module is connected to the source end protocol interface and the load end protocol interface through the signal switch, and the source end protocol interface or the load end protocol interface is selectively communicated with the protocol signal module by switching the signal switch.
5. The digital programmable power supply of the mobile power supply aging testing system according to claim 1, wherein an address switch is connected to the MCU controller, and the address switch is used to set a communication address for the corresponding MCU controller to be in communication connection with an upper computer.
6. The digital programmable power supply of the mobile power supply aging test system according to any one of claims 1 to 5, wherein the communication interface is an RS-485 interface, and the RS-485 interface is connected with an upper computer through an RS485 bus.
7. A mobile power supply burn-in test system comprising the digital programmable power supply of the mobile power supply burn-in test system of any one of claims 1-6.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110988730A (en) * | 2019-11-26 | 2020-04-10 | 深圳市科赛电子有限公司 | Mobile power supply aging test system and digital programmable power supply thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110988730A (en) * | 2019-11-26 | 2020-04-10 | 深圳市科赛电子有限公司 | Mobile power supply aging test system and digital programmable power supply thereof |
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