CN205544441U - Portable Emergency Starter - Google Patents

Abstract

The utility model provides a portable emergency starting power supply, which includes a charging control module, an electric energy storage module and an electric energy output module; wherein, the charging control module is used to charge the electric energy storage module, and the electric energy storage module is used to output electric The module provides power to special vehicles; the charging control module includes a main circuit module and a control module. Voltage and the charging current and voltage of the main circuit module are detected, and the charging current and voltage of the main circuit module are adjusted through PWM according to the detection results; the power energy storage module includes at least two sets of supercapacitors connected in parallel, and each set of supercapacitors consists of at least 10 composed of supercapacitors in series. The utility model can safely, effectively, environmentally friendly and flexibly meet the power supply and starting requirements of special vehicles under extreme conditions.

Description

Portable Emergency Starter

technical field

The utility model relates to the technical field of power supplies, in particular to a portable emergency starting power supply.

Background technique

The starting power supply for special vehicles refers to a device on special vehicles that can convert external DC electric energy into chemical energy and store it, and convert the stored chemical energy into electrical energy output, commonly known as special vehicle batteries. The battery for special vehicles is an auxiliary power supply for special vehicles. It is mainly used to supply power to the engine of special vehicles when the special vehicle starts; when the generator is not working, it can supply power to the electrical device alone; when the output power of the generator cannot meet the power consumption When the device needs it, it will supply power to the electrical device together with the generator.

At present, in special vehicles, especially in special vehicles for training, the fixed starting power supply is used most. However, the fixed starting power supply cannot be used without high-power mains power (220V or 380V), and it is bulky and unable to meet the complex and changeable field use requirements. It is necessary to use a special vehicle battery.

Batteries for special vehicles can be divided into acidic batteries and alkaline batteries according to the nature of the electrolyte. Most practical special vehicles use lead-acid batteries as the starting power supply. The capacity of this kind of battery is generally 100-200 ampere hours, and the working voltage is 12 volts (24 volts for some), and it is usually connected into a battery pack for use. The voltage of the battery pack is generally 24 volts, and some are converted to 48 volts when the engine is started. With the increase of the engine power of some special vehicles and the gradual increase of electrical devices, the capacity of the storage battery is required to increase accordingly, which makes the acid storage battery and alkaline storage battery unable to meet the demand for auxiliary power of special vehicles; and the traditional Lead-acid batteries have defects such as narrow environmental adaptability, short service life, high maintenance costs, and large environmental pollution, and cannot adapt to harsh field environments.

In order to improve the structure and process of the battery, a higher performance lithium iron phosphate battery has been developed. Lithium iron phosphate batteries have greatly improved cycle life and environmental temperature adaptability, but their research and development costs are high, and there are great risks in structural stability.

Utility model content

In view of the above problems, the purpose of this utility model is to provide a portable emergency starting power supply to solve the problems existing in the existing special vehicle protection power supply.

The portable emergency starting power supply provided by the utility model includes a charging control module, an electric energy storage module and an electric energy output module; wherein, the charging control module is connected with the electric energy storage module for charging the electric energy storage module, and the charging control module includes a main A circuit module and a control module; wherein, the main circuit module is used to convert alternating current into direct current and output it to the electric energy storage module; the control module is used to detect the capacitor voltage of the electric energy storage module, and the charging current and voltage of the main circuit module , and adjust the current and voltage of the direct current output by the main circuit module through PWM according to the detection results; the electric energy storage module is connected with the electric energy output module, and is used to supply power to special vehicles through the electric energy output module; wherein, the electric energy storage module includes parallel connection of at least Two sets of supercapacitors, and each set of supercapacitors is composed of at least 10 supercapacitors connected in series.

In addition, the preferred structure is: the main circuit module further includes: an electromagnetic interference suppression module, used to access the grid voltage, and reduce electromagnetic interference between the grid and the charging control module; a buffer module, connected to the electromagnetic interference module, used to use The voltage of the connected grid rises slowly; the power frequency rectification and filtering module is connected to the buffer module for converting the connected power grid voltage into a fixed DC voltage and outputting it; the DC/DC module is connected to the power frequency rectification and filtering module for The fixed direct current output by the power frequency rectification and filtering module is converted into variable direct current through PWM.

In addition, the preferred structure is: the DC/DC module further includes: a DC/AC module, which is connected to the power frequency rectification and filtering module, and is used to invert the fixed direct current into high-frequency alternating current through PWM, and then convert the high-frequency alternating current through a high-frequency transformer. Perform step-down processing; the high-frequency rectification and filtering module is connected with the DC/AC module, and is used to convert the high-frequency alternating current that has undergone step-down processing into direct current.

In addition, the preferred structure is: the control module further includes: a detection module, connected to the main circuit module and the electric energy storage module respectively, for detecting the main circuit module and the electric energy storage module and outputting detection values; the central control module , connected with the detection module, used to issue control instructions according to the detection value output by the detection module, and control the main circuit module and the electric energy output module.

In addition, the preferred structure is: the detection module further includes: a charging current and voltage detection module, connected to the main circuit module, used to detect the current and voltage of the direct current output by the main circuit module, and output the detected value to the central control module; The voltage detection module is connected with the power energy storage module, and is used to detect the voltage of the power energy storage module, and outputs the detected value to the central control module; the input voltage detection module is used to detect the connected grid voltage, and Output the detection value to the central control module.

In addition, the preferred structure is: the control module further includes: a PWM isolation drive module, which is connected to the DC/DC module, used for isolation and amplification according to the control command issued by the central control module, and drives the switching tube in the DC/DC module to reverse change; the start output control module is connected with the power output module, and is used to start the power output module to output power according to the control command issued by the central control module.

In addition, the preferred structure is: the electric energy output module further includes: an operation display module connected to the central control module for providing a man-machine operation interface and performing status display according to the control instructions issued by the central control module.

In addition, the preferred structure is: each group of supercapacitors is composed of 18 supercapacitors connected in series, and each group of supercapacitors is isolated by an insulating plate.

Through the above, according to the portable emergency starting power supply of the embodiment of the present invention, the supercapacitor is used as the electric energy storage module, thereby replacing the traditional battery as the electric energy storage system of the special vehicle starting power supply, and at the same time the electric energy storage module and the charging control module Combined, it can be more safe, effective, environmentally friendly and flexible to meet the power supply and start-up requirements of special vehicles in extreme environments.

Description of drawings

By referring to the following description combined with the accompanying drawings and the content of the claims, and with a more comprehensive understanding of the utility model, other objectives and results of the utility model will be more clear and easy to understand. In the attached picture:

Fig. 1 is a schematic diagram of the first logical structure of a portable emergency starting power supply according to an embodiment of the present invention;

Fig. 2 is a schematic diagram of the second logical structure of the portable emergency starting power supply according to the embodiment of the present invention.

The same reference numerals indicate similar or corresponding features or functions throughout the drawings.

detailed description

Specific embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings.

Aiming at the problems of short service life, high maintenance cost, heavy environmental pollution, poor adaptability, and inability to meet the power supply requirements of special vehicles in the aforementioned existing batteries, the utility model replaces traditional batteries by using supercapacitors as power energy storage modules At the same time, the electric energy storage module is combined with the charging control module, so that it is safer, more effective, environmentally friendly and flexible to meet the power supply and start-up requirements of special vehicles in extreme environments.

In order to illustrate the portable emergency starter provided by the utility model, Fig. 1 shows the first logic structure of the portable emergency starter according to the embodiment of the utility model; Fig. 2 shows the portable emergency starter according to the utility model embodiment The second logical structure of .

As shown in FIG. 1 , the portable emergency starter power supply 1000 provided by the present invention includes a charging control module 1100 , a power storage module 1200 and a power output module 1300 . Wherein, the charging control module 1100 is connected with the electric energy storage module 1200 for charging the electric energy storage module 1200 , and the charging control module includes a main circuit module 1110 and a control module 1120 .

Wherein, the main circuit module 1110 is used to convert alternating current into direct current and output it to the electric energy storage module 1200, the control module 1120 is used to detect the capacitor voltage of the electric energy storage module 1200, and the charging current and voltage of the main circuit module 1110, And according to the detection result, the current and voltage of the direct current output by the main circuit module 1110 are adjusted through PWM (PulseWidth Modulation, pulse width modulation).

The electric energy storage module 1200 is connected with the electric energy output module 1300, and is used to supply power to special vehicles through the electric energy output module 1300; wherein, the electric energy storage module 1200 includes at least two groups of supercapacitors connected in parallel, and each group of supercapacitors consists of at least 10 supercapacitors capacitors in series. Specifically, in an example of the present invention, each group of supercapacitors is composed of 18 supercapacitors in series, and each group of supercapacitors is isolated by an insulating plate to prevent termination.

Further, as shown in Figure 2, in the portable emergency starting power supply 1000 provided by the present invention, the main circuit module 1110 further includes an electromagnetic interference suppression module 1111, a buffer module 1112, a power frequency rectification and filtering module 1113, and a DC/DC module 1114 .

Among them, the electromagnetic interference suppression module 1111 is used to access the grid voltage, and reduce the electromagnetic interference between the grid and the charging control module 1100; the buffer module 1112 is connected to the electromagnetic interference module 1111, and is used to slowly increase the connected grid voltage; The frequency rectification and filtering module 1113 is connected with the buffer module, which is used to convert the connected grid voltage into a fixed DC voltage and output it; the DC/DC module 1114 is connected with the power frequency rectification and filtering module 1113, and is used to convert the power frequency rectification and filtering module through PWM The output fixed direct current is converted into variable direct current.

Specifically, when the DC/DC module 1114 inverts the fixed direct current into variable direct current, the DC/DC module 1114 further includes a DC/AC module 41 and a high frequency rectification and filtering module 42 . Among them, the DC/AC module 41 is connected with the power frequency rectification and filtering module, which is used to invert the fixed direct current into high-frequency alternating current through PWM, and then step down the high-frequency alternating current through the high-frequency transformer; the high-frequency rectification and filtering module 42 is connected with The DC/AC module 41 is connected to convert the high-frequency alternating current that has undergone step-down processing into direct current.

In an example of the present invention, the power frequency rectification and filtering module 1113 converts the connected power grid voltage of 220V AC into about 300V DC, and then in the DC/AC module 41, uses PWM to invert the 300V DC into high frequency (100kHz) AC, then isolated and stepped down by a high-frequency transformer to 30V high-frequency current, and finally the high-frequency rectification and filtering module 42 converts the high-frequency AC through isolation and step-down into DC. So far, the inversion of fixed direct current into variable direct current has been completed, and in the process of inversion, a reliable, advanced and efficient inverter topology and high-performance field effect tubes can be used to stabilize the entire charging control module. Reliable and efficient operation.

In addition, the control module 1120 further includes a detection module 1121 and a central control module 1122 . Wherein, the detection module 1121 is respectively connected with the main circuit module 1110 and the electric energy storage module 1200, and is used for detecting the main circuit module 1110 and the electric energy storage module 1200 and outputting detection values;

The central control module 1122 is connected to the detection module 1121 , and is used to issue a control instruction according to the detection value output by the detection module 1121 , and control the main circuit module 1110 and the power output module 1300 . Specifically, the detection module 1121 further includes a charging current and voltage detection module 11 , a capacitor voltage detection module 12 and an input voltage detection module 13 .

Wherein, the charging current and voltage detection module 11 is connected with the main circuit module 1110, and is used to detect the current and voltage of the direct current output by the main circuit module 110, and output the detected value to the central control module 1122, so that the central control module can Control the output current and voltage of the main circuit module 110; the capacitor voltage detection module 12 is connected to the electric energy storage module 1200, and is used to detect the voltage of the electric energy storage module 1200, and output the detection value to the central control module 1122, so that the central control module can control the charging or discharging process of the electric energy storage module according to the detection value; the input voltage detection module 13 is used to detect the connected grid voltage at any time, and output the detection value to the central control module, so that When the voltage input is abnormal, protect the power supply in time. Normally, when the connected grid voltage exceeds 220V±20%, the input voltage detection module 13 will send an alarm signal to the central control module, and the central control module will send a corresponding control command to ensure that the power supply is shut down for protection.

In addition, the control module 1120 further includes a PWM isolation drive module 1123 and a start output control module 1124 . Among them, the PWM isolation driving module 1123 is connected with the DC/DC module, and is used to isolate and amplify according to the control command issued by the central control module 1122, and drive the switching tube in the DC/DC module to perform inversion; the start output control module 1124 is connected with the electric energy The output modules are connected to start the power output module 1300 to output power according to the control instruction issued by the central control module 1122 .

In addition, the power output module 1300 also includes an operation display module 1310 connected to the central control module 1122 for providing a man-machine operation interface and performing status display according to control instructions issued by the central control module 1122 . For example, when the electric energy storage module 1200 is fully charged, the central control module 1122 will issue a control command to control the charging status light in the operation display module 1310 to light up; 1122 will issue a control command to control the charging status light to go out. Here only the charging state is taken as an example for illustration. Of course, the operation display module 1310 can also add other states at any time, such as the state during charging, etc., which will not be repeated here.

The portable emergency starting power provided by the utility model has been described above, and the working process of the portable emergency starting power provided by the utility model will be described below by way of example.

The process of the portable emergency start-up power supply provided by the utility model is: when the voltage of the electric energy storage module is lower than 30V, the charging control module maintains a constant current of 100A to quickly charge the electric energy storage module, and the output voltage of the charging control module is the electric energy storage module The voltage of the module at this time; when the voltage of the power storage module is close to 30V, the charging control module charges with a constant voltage of 30V, and the charging current gradually decreases. The control module will automatically stop charging and control the "charging status light" of the operation display module to light up; when the special vehicle needs to be started, after connecting the "start power supply" cable, set the "start output" switch knob of the operation display module to At the "on" position, the start output can be turned on; after starting the vehicle for many times, when the discharged voltage of the electric energy storage module is lower than 18V, the "charging status light" goes out to ensure that the power supply needs to be recharged before it can be used .

From the above, it can be known that the portable emergency start-up power supply provided by the utility model adopts a supercapacitor as an electric energy storage module, which has the advantages of high power density, long service life, easy maintenance, wide working temperature range, safe discharge, simple installation, compact structure, and environmental adaptability. The characteristics of strong durability and no pollution can replace the commonly used lead-acid batteries at present, can prevent secondary pollution, and can be used for a long time without maintenance.

Specifically, supercapacitors mainly have the following characteristics:

(1) High power density: up to 10kW/kg, much higher than the current power density level of batteries;

(2) Long cycle life: deep charge and discharge cycles can reach 500,000 to 1 million times;

(3) Wide operating temperature range: At present, the operating temperature range of supercapacitors can reach -40℃～+70℃;

(4) Maintenance-free: supercapacitors have high charging and discharging efficiency, have a certain tolerance for overcharging and overdischarging, can be repeatedly charged and discharged stably, and theoretically do not require maintenance;

(5) Green and environmental protection: Supercapacitors do not use heavy metals and other harmful chemicals in the production process, and have a long lifespan. They are a new type of green and environmentally friendly power supply.

Therefore, the utility model adopts the supercapacitor as the power energy storage module in the guaranteed power supply, which can withstand high-current charging and discharging, and can obtain a huge short-term power output with only a small amount of electricity, generally within tens of seconds to a few minutes. The supplementary electricity can be completed within a short period of time (traditional batteries generally need more than 6 to 8 hours), so as to realize the rapid supplementary electricity of the starting device; and due to the characteristics of the super capacitor, a smaller super capacitor can be used to achieve the purpose of starting, so that it can be realized Ensure the light weight and portability of the power supply. In addition, it should be noted that the portable emergency starting power provided by the utility model can not only be used as a guaranteed power supply for special vehicles, but also can be used as a guaranteed power supply for other equipment that needs emergency starting.

The portable emergency starting power supply according to the present invention has been described above by way of example with reference to the accompanying drawings. However, those skilled in the art should understand that various improvements can be made to the portable emergency starting power supply proposed by the utility model above without departing from the content of the utility model. Therefore, the protection scope of the present utility model should be determined by the contents of the appended claims.

Claims (8)

1. A portable emergency starting power supply, characterized in that it comprises a charging control module, an electric energy storage module and an electric energy output module; wherein, The charging control module is connected to the electric energy storage module for charging the electric energy storage module, and the charging control module includes a main circuit module and a control module; wherein, The main circuit module is used to convert alternating current into direct current and output it to the electric energy storage module; The control module is used to detect the capacitor voltage of the electric energy storage module and the charging current and voltage of the main circuit module, and adjust the current and voltage of the direct current output by the main circuit module through PWM according to the detection results; The electric energy storage module is connected to the electric energy output module, and is used to supply power to special vehicles through the electric energy output module; wherein, The electric energy storage module includes at least two groups of supercapacitors connected in parallel, and each group of supercapacitors is composed of at least 10 supercapacitors connected in series. 2. The portable emergency starting power supply according to claim 1, wherein the main circuit module further comprises: The electromagnetic interference suppression module is used to access the grid voltage and reduce the electromagnetic interference between the grid and the charging control module; A buffer module, connected to the electromagnetic interference module, used to slowly increase the voltage of the connected power grid; A power frequency rectification and filtering module, connected to the buffer module, for converting the connected grid voltage into a fixed DC voltage and outputting it; The DC/DC module is connected to the power frequency rectification and filtering module, and is used to invert the fixed direct current output by the power frequency rectification and filtering module into variable direct current through PWM. 3. The portable emergency starting power supply according to claim 2, wherein the DC/DC module further comprises: The DC/AC module is connected to the power frequency rectification and filtering module, and is used to invert the fixed direct current into high-frequency alternating current through PWM, and then step down the high-frequency alternating current through a high-frequency transformer; The high-frequency rectification and filtering module is connected with the DC/AC module, and is used for converting the high-frequency alternating current that has undergone step-down processing into direct current. 4. The portable emergency starting power supply according to claim 2, wherein the control module further comprises: A detection module is connected to the main circuit module and the electric energy storage module respectively, and is used to detect the main circuit module and the electric energy storage module and output detection values; The central control module is connected with the detection module, and is used to issue a control instruction according to the detection value output by the detection module, and control the main circuit module and the electric energy output module. 5. The portable emergency starting power supply according to claim 4, wherein the detection module further comprises: A charging current and voltage detection module, connected to the main circuit module, for detecting the current and voltage of the direct current output by the main circuit module, and outputting the detection value to the central control module; A capacitor voltage detection module, connected to the electric energy storage module, used to detect the voltage of the electric energy storage module, and output the detection value to the central control module; The input voltage detection module is used to detect the connected grid voltage and output the detected value to the central control module. 6. The portable emergency starting power supply according to claim 5, wherein the control module further comprises: A PWM isolation drive module, connected to the DC/DC module, used to isolate and amplify according to the control command issued by the central control module, and drive the switching tube in the DC/DC module to perform inversion; The start output control module is connected with the electric energy output module, and is used to start the electric energy output module to output electric energy according to the control instruction issued by the central control module. 7. The portable emergency starting power supply according to claim 5, wherein the power output module further comprises: The operation display module is connected with the central control module, and is used for providing a man-machine operation interface and performing status display according to the control instructions issued by the central control module. 8. The portable emergency starting power supply according to claim 1, wherein each group of supercapacitors is composed of 18 supercapacitors connected in series, and each group of supercapacitors is isolated by an insulating plate.