Pulse maintenance instrument for power battery of new energy automobile

Abstract

The utility model discloses a new energy automobile power battery pulse maintenance instrument. The new energy automobile power battery pulse maintenance instrument comprises a shell, a power supply connecting line, a charging line, a direct current charging gun, a main control board, a high-voltage power supply module, a low-voltage power supply module, a data acquisition module, a high-voltage relay and a high-voltage relay control module, according to the utility model, a direct current charging mode is adopted, the charging speed is high, a new energy automobile equipped with a direct current charging port is supported to charge and complement energy, the charging is automatically stopped after the new energy automobile is fully charged, no personnel is needed for guarding, the use is flexible, the geographical limitation is avoided, and the operation is simple; and the charging current can be set according to the actual situation, key data such as the current battery electric quantity, the charging current, the charging duration, the total voltage, the charged electric quantity and the battery temperature of the vehicle are effectively displayed in the charging process, and the charging state is monitored in real time.

Description

TECHNICAL FIELD

[0001] The utility model relates to, specifically related to a new energy automobile power battery pulse maintenance appearance. BACKGROUND

[0002] New energy vehicles are the main direction of global automobile industry transformation and upgrading and green development, and are the strategic choice of high-quality development of the automobile industry, and developing new energy vehicles is the only way to become a powerful country from a big country.

[0003] Unlike traditional fuel vehicles equipped with engines, the power battery equipped in new energy vehicles is actually a chemical product, and its optimal charging and discharging temperature is actually below 35 DEG C. The drastic change in temperature has irreversible damage to the chemical elements of the battery, which is particularly evident when fast charging. There are two paths for current fast energy replenishment, one is super-fast charging, and the other is battery replacement. At present, there are only a few models that support battery replacement, and the sales price is also higher than that of ordinary charging models. Using super-fast charging will accelerate the decay of electrolyte and battery, increase the damage to the battery, and make the battery decay more serious in terms of cycle life.

[0004] Solving the aging and decay of new energy vehicle power batteries and realizing "vehicle and battery life" have become important problems that must be solved in the vigorous development of the new energy vehicle industry. SUMMARY

[0005] In order to solve the problems in the background art, the utility model provides a new energy automobile power battery pulse maintenance appearance, which is simple to operate, and the charging current can be adjusted according to the actual situation. The pulse current in the charging process plays a maintenance role on the new energy automobile power battery, thereby delaying the decay rate of the new energy automobile power battery.

[0006] The utility model discloses a new energy automobile power battery pulse maintenance appearance includes: casing, power connection line, charging wire, direct current charging gun, main control board, high voltage power module, low voltage power module, data acquisition module, high voltage relay and high voltage relay control module, wherein, the inside of casing has the cavity, is provided with main control board, high voltage power module, low voltage power module, data acquisition module, high voltage relay and high voltage relay control module in the inside of casing, direct current charging gun is connected to high voltage power module, data acquisition module and high voltage relay control module respectively through charging wire in casing outside, sets up high voltage relay on the charging wire of connecting high voltage power module to direct current charging gun, one end of power connection line connects high voltage power module and low voltage power module, and the other end of power connection line is provided with the plug, is used for connecting the external alternating current, low voltage power module is connected to main control board, data acquisition module and high voltage relay control module respectively through low voltage power line, main control board is connected to high voltage relay control module, high voltage power module and data acquisition module respectively through signal line, data acquisition module is connected to high voltage relay control module through signal line, and high voltage relay is connected to high voltage relay control module through low voltage power line.

[0007] Further, the utility model also includes screen, pilot lamp, emergency switch, heat dissipation window and wire harness storage box, wherein, screen sets up at the surface of casing, low voltage power module is connected to screen through low voltage power line, and main control board and data acquisition module are connected to screen respectively through signal line, pilot lamp sets up at the surface of casing, and pilot lamp is connected to screen through signal line, and screen provides operating power supply to pilot lamp through low voltage power line, in addition, pilot lamp is provided with green lamp, yellow lamp and red lamp respectively, and three working conditions of equipment operation, equipment failure and equipment stop working are represented respectively, emergency switch sets up at the surface of casing, and emergency switch is connected to main control board through signal line, heat dissipation hole sets up at the side of casing, and provides heat dissipation for power module, wire harness storage box is arranged at the lower part of casing, and power connection line and charging wire are placed in wire harness storage box when not working, screen adopts capacitive touch liquid crystal screen.

[0008] Direct current charging gun includes nine holes, is high voltage direct current power supply positive pole DC+, high voltage direct current power supply negative pole DC-, low voltage auxiliary power supply positive pole A+, low voltage auxiliary power supply negative pole A-, first charging connection confirmation end CC1, second charging connection confirmation end CC2, charging communication high end S+, charging communication low end S- and ground terminal PE, low voltage auxiliary power supply positive pole A+ and low voltage auxiliary power supply negative pole A- are collectively called low voltage auxiliary power supply end, and charging communication high S+ and charging communication low S- are collectively called charging communication end, correspondingly, the direct current charging port of electric automobile also includes nine holes.

[0009] The low-voltage auxiliary power supply terminal of the DC charging gun is connected to the low-voltage auxiliary power supply terminal of the high-voltage relay control module via a low-voltage power supply line. The first charging connection confirmation terminal of the DC charging gun is connected to the first charging connection confirmation terminal of the high-voltage relay control module via a signal line. The first charging connection confirmation terminal of the high-voltage relay control module is also connected to the first charging connection confirmation terminal of the main control board via a signal line. The charging communication terminal of the DC charging gun is connected to the charging communication terminal of the data acquisition module via a signal line. The positive terminal of the high-voltage DC power supply of the DC charging gun is connected in series with the high-voltage relay and then connected to the positive terminal of the high-voltage DC power supply of the high-voltage power supply module via a high-voltage power supply line. The negative terminal of the high-voltage DC power supply of the DC charging gun is connected to the high-voltage power supply module via a high-voltage power supply line. The line is connected to the negative terminal of the high-voltage DC power supply of the high-voltage power supply module; the ground terminal of the DC charging gun is connected to the ground terminal of the high-voltage power supply module; the second charging connection confirmation terminal of the DC charging gun is connected to the ground terminal through a resistor; the low-voltage power supply module is connected to the working power terminals of the main control board, the data acquisition module, and the high-voltage relay control module through low-voltage power lines; the signal terminals of the main control board are connected to the signal terminals of the screen, the high-voltage power supply module, and the data acquisition module through signal lines; the signal terminals of the data acquisition module are also connected to the signal terminals of the screen and the high-voltage relay control module through signal lines; the low-voltage power supply terminal of the high-voltage relay is connected to the low-voltage power supply terminal of the high-voltage relay control module through a low-voltage power line.

[0010] When charging an electric vehicle, the DC charging gun connected to the charging cable is inserted into the DC charging port of the electric vehicle, and the plug at one end of the power connection cable is inserted into an external AC power source. The AC power supply voltage is 220V or 380V, thus transmitting the external AC power to the high-voltage power module and the low-voltage power module through the power connection cable. The low-voltage power module converts the 220V or 380V AC power into 12V low-voltage DC power, providing 12V operating power to the main control board, screen, data acquisition module, and high-voltage relay control module respectively. The high-voltage power module converts the external 220V or 380V AC power into high-voltage DC power and outputs it to the DC charging gun. The high-voltage relay is controlled by the high-voltage relay control module. The system controls the opening and closing of the high-voltage DC power supply module, thereby enabling the output and disconnection of high-voltage DC power. The data acquisition module obtains battery information and charging status of the electric vehicle through signal lines. The main control board controls the output current and voltage of the high-voltage power supply module based on the battery information and charging status sent by the data acquisition module. The screen updates in real time based on the battery information and charging status sent by the data acquisition module. The high-voltage relay control module controls the opening and closing of the high-voltage relay based on the battery information and charging status sent by the data acquisition module. In case of an emergency during charging, pressing the emergency switch can quickly stop charging, and the output and disconnection of high-voltage DC power are controlled through the signal lines connecting the main control board and the high-voltage power supply module.

[0011] The output current of the high-voltage power module to the direct current charging gun is 1A-60A. The high-voltage power module adopts a 20kW power module, and the output voltage is 200V-750V. The output voltage of the low-voltage power module is 10V-14V.

[0012] The utility model has the advantages of:

[0013] The utility model adopts the direct current charging mode, and the charging speed is fast. The new energy automobile equipped with the direct current charging port can be charged, and the charging is automatically stopped after the full charging. The utility model does not need personnel on duty, is flexible to use, is not limited by region, is simple to operate, and the charging current can be set according to the actual situation. The key data (such as the current battery capacity of the vehicle, the charging current, the charging time length, the total voltage, the charged capacity and the battery temperature) are effectively displayed in the charging process, and the charging state is monitored in real time. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic view of an embodiment of the utility model pulse maintenance instrument for new energy automobile power battery outside.

[0015] Figure 2 It is a schematic view of the connection relationship when the utility model pulse maintenance instrument for new energy automobile power battery charges.

[0016] Figure 3 It is a connection block diagram of an embodiment of the utility model pulse maintenance instrument for new energy automobile power battery inside. DETAILED DESCRIPTION

[0017] The utility model will be further described in combination with the specific embodiments and the drawings.

[0018] As Figure 1As shown, the new energy vehicle power battery pulse maintenance instrument of the embodiment comprises: a shell, an indicator light 1, a screen 2, a power connection line 3, a wire harness storage box 4, an emergency switch 5, a heat dissipation window 6, a direct current charging gun 7, a charging line 8, a main control board, a high-voltage power supply module, a low-voltage power supply module, a data acquisition module, a high-voltage relay and a high-voltage relay control module; wherein the shell has a cavity inside, and the main control board, the high-voltage power supply module, the low-voltage power supply module, the data acquisition module, the high-voltage relay and the high-voltage relay control module are arranged inside the shell; the screen 2, the emergency switch 5, the heat dissipation window 6 and the indicator light 1 are arranged on the surface of the shell, and the indicator light 1 is located above the screen 2, and the indicator light 1 is connected to the screen 2 through a signal line; the wire harness storage box 4 is arranged at the lower part of the shell, and the power connection line 3 and the charging line 8 are placed in the wire harness storage box 4 when the equipment is not working; the direct current charging gun 7 outside the shell is connected to the high-voltage power supply module, the data acquisition module and the high-voltage relay control module inside the shell through the charging line 8 respectively, and the high-voltage relay is arranged on the charging line 8 connecting the high-voltage power supply module to the direct current charging gun 7; one end of the power connection line 3 is connected to the high-voltage power supply module and the low-voltage power supply module, and the other end of the power connection line 3 is provided with a plug for connecting external alternating current; the low-voltage power supply module is connected to the screen 2, the main control board, the data acquisition module and the high-voltage relay control module through a low-voltage power supply line respectively; the main control board is connected to the screen 2, the high-voltage relay control module, the high-voltage power supply module and the data acquisition module through a signal line respectively; the data acquisition module is connected to the screen 2 and the high-voltage relay control module through a signal line; the high-voltage relay is connected to the high-voltage relay control module through a low-voltage power supply line; and the emergency switch 5 is connected to the main control board through a signal line.

[0019] The connection relationship when charging the electric vehicle is as shown in Figure 2 The direct current charging gun 7 connected by the charging line 8 is inserted into the direct current charging port of the electric vehicle, and the plug at one end of the power connection line 3 is inserted into the external alternating current power supply.

[0020] The direct current charging gun 7 comprises nine holes, which are high-voltage direct current power supply positive DC+, high-voltage direct current power supply negative DC-, low-voltage auxiliary power supply positive A+, low-voltage auxiliary power supply negative A-, first charging connection confirmation end CC1, second charging connection confirmation end CC2, charging communication high end S+, charging communication low end S- and ground line end PE; the low-voltage auxiliary power supply positive A+ and the low-voltage auxiliary power supply negative A- are collectively referred to as the low-voltage auxiliary power supply end, and the charging communication high S+ and the charging communication low S- are collectively referred to as the charging communication end; correspondingly, the direct current charging port of the electric vehicle also comprises nine holes.

[0021] As shown in Figure 3As shown, the low-voltage auxiliary power end of the direct current charging gun 7 is connected to the low-voltage auxiliary power end of the high-voltage relay control module through a low-voltage power line, the first charging connection confirmation end of the direct current charging gun 7 is connected to the first charging connection confirmation end of the high-voltage relay control module through a signal line, and the first charging connection confirmation end of the high-voltage relay control module is also connected to the first charging connection confirmation end of the main control board through a signal line; the charging communication end of the direct current charging gun 7 is connected to the charging communication end of the data acquisition module through a signal line; the positive pole of the high-voltage direct current power source of the direct current charging gun 7 is connected to the positive pole of the high-voltage direct current power source of the high-voltage power module through a high-voltage power line in series with the high-voltage relay; the negative pole of the high-voltage direct current power source of the direct current charging gun 7 is connected to the negative pole of the high-voltage direct current power source of the high-voltage power module through a high-voltage power line; the ground wire end of the direct current charging gun 7 is connected to the ground wire end of the high-voltage power module; the second charging connection confirmation end of the direct current charging gun 7 is connected to the ground wire end through a resistor; the low-voltage power module is connected to the working power end 12+ and 12- of the screen 2, the main control board, the data acquisition module and the high-voltage relay control module through low-voltage power lines respectively; the signal end of the main control board is connected to the signal ends A and B of the screen 2, the high-voltage power module and the data acquisition module through signal lines respectively; the signal end of the data acquisition module is also connected to the signal ends A and B of the screen 2 and the high-voltage relay control module through signal lines; the low-voltage power end of the high-voltage relay is connected to the low-voltage power end of the high-voltage relay control module through a low-voltage power line; the emergency switch 5 is connected to the signal end of the main control board through a signal line.

[0022] When charging the electric vehicle, the DC charging gun 7 connected by the charging wire 8 is inserted into the DC charging port of the electric vehicle, the plug at one end of the power connection wire 3 is inserted into the external AC power supply with a voltage of 220V or 380V, so as to transmit the external AC power supply to the high-voltage power supply module and the low-voltage power supply module through the power connection wire 3; the low-voltage power supply module converts the 220V or 380V AC power into 12V low-voltage DC power to provide 12V working power for the main control panel, the screen 2, the data acquisition module and the high-voltage relay control module; the high-voltage power supply module converts the external 220V or 380V AC power into high-voltage DC power output to the DC charging gun 7, and the high-voltage relay is controlled to be closed and opened through the high-voltage relay control module, so as to realize the output and disconnection of the high-voltage DC power; the main control panel and the screen 2 communicate with each other, the user sets the voltage, current and charging time and the like on the screen 2, and after starting the charging through the screen 2, the main control panel controls the high-voltage power supply module to output the current, voltage and charging time according to the data sent by the screen 2 through the signal line connected with the high-voltage power supply module; the data acquisition module obtains the battery information (including the power, voltage, current and battery temperature and the like) and the charging state of the electric vehicle through the signal line, and if special conditions such as overvoltage, overcurrent or abnormal voltage of the vehicle occur during the charging process, the data acquisition module sends a stop charging signal to the high-voltage relay control module, the high-voltage relay control module controls the high-voltage relay to be disconnected, so as to realize the stop charging work; the high-voltage relay control module provides 12V low-voltage power for the DC charging gun 7; during the charging process, the first charging connection confirmation end CC1 of the high-voltage relay control module is connected with the first charging connection confirmation end CC1 of the DC charging gun 7, and a signal is sent to the main control panel, the main control panel controls the high-voltage power supply module to output the current and voltage, the main control panel also interacts with the high-voltage relay control module in real time, so as to ensure that the charging gun is firmly connected with the DC charging port of the vehicle; the main control panel controls the high-voltage power supply module to output the current and voltage through the battery information and the charging state sent by the data acquisition module, the screen 2 displays and updates the display in real time through the signals sent by the data acquisition module and the main control panel, such as the current battery power, charging current, charging time, total voltage, charged power and battery temperature and the like, and the high-voltage relay control module controls the high-voltage relay to be closed and opened through the battery information and the charging state sent by the data acquisition module; the emergency switch 5 is connected with the main control panel through the signal line, and controls the output and disconnection of the high-voltage DC power through the signal line connected with the high-voltage power supply module through the main control panel; the indicator light 1 indicates the three working states of the equipment operation, equipment failure and equipment stop working through the green light, yellow light and red light respectively;The main control board has overvoltage protection, overtemperature protection and short circuit protection, etc. When detecting abnormal charging of the power battery, a stop charging signal is sent to the main control board, the main control board sends the stop charging signal to the high-voltage power module and the high-voltage relay control module through the signal line, so that the high-voltage power module stops working, the high-voltage relay control module controls the high-voltage relay to be disconnected, and the automatic stop charging is completed. When the data acquisition module detects that the battery power of the electric vehicle reaches 100%, a stop charging signal is sent to the main control board, the main control board sends the stop charging signal to the high-voltage power module and the high-voltage relay control module through the signal line, so that the high-voltage power module stops working, the high-voltage relay control module controls the high-voltage relay to be disconnected, and the automatic stop charging is completed.

[0023] The current range output by the high-voltage power module to the DC charging gun 7 is 1A-60A. The high-voltage power module adopts a 20kW power module, and the output voltage range is 200V-750V. The output voltage of the low-voltage power module is 10V-14V.

[0024] The screen adopts a capacitive touch liquid crystal screen 2.

[0025] The operation method of the new energy vehicle power battery pulse maintenance instrument of the embodiment comprises the following steps:

[0026] 1) The plug at one end of the power supply connection line 3 is inserted into an external 220V or 380V AC power supply, and the DC charging gun 7 is inserted into the DC charging port of the electric vehicle;

[0027] 2) The user sets the charging current on the screen 2. The current setting range is 1A-60A. If no setting is made, the main control board automatically adjusts the charging power according to the vehicle battery information and the charging state provided by the data acquisition module;

[0028] 3) Click the screen to start the charging option;

[0029] 4) After the charging is completed, the main control board stops the high-voltage power module through the signal line, and at the same time, the high-voltage relay control module disconnects the high-voltage relay to stop charging; or the user actively clicks the screen to stop the charging option during the charging process, the main control board receives the stop charging signal sent by the screen through the signal line, and then sends the stop charging signal to the high-voltage power module through the signal line connected with the high-voltage power module, the high-voltage power module stops working, and at the same time, the high-voltage relay control module disconnects the high-voltage relay to stop charging;

[0030] 5) Remove the plug of the DC charging gun 7 and the power supply connection line 3.

[0031] Finally, it should be noted that the purpose of the disclosed embodiments is to help further understand the present application, but those skilled in the art can understand that various replacements and modifications are possible without departing from the spirit and scope of the present application and the appended claims. Therefore, the present application should not be limited to the disclosed content, and the scope of protection of the present application is defined by the scope of the claims.

Claims

1. A new energy vehicle power battery pulse maintenance instrument, characterized in that, The new energy automobile power battery pulse maintenance instrument comprises a shell, a power supply connecting line, a charging line, a direct current charging gun, a main control board, a high-voltage power supply module, a low-voltage power supply module, a data acquisition module, a high-voltage relay and a high-voltage relay control module; wherein the shell has a cavity inside, and the main control board, the high-voltage power supply module, the low-voltage power supply module, the data acquisition module, the high-voltage relay and the high-voltage relay control module are arranged inside the shell; the direct current charging gun outside the shell is connected to the high-voltage power supply module, the data acquisition module and the high-voltage relay control module inside the shell through the charging line, and the high-voltage relay is arranged on the charging line connecting the high-voltage power supply module to the direct current charging gun; one end of the power supply connecting line is connected to the high-voltage power supply module and the low-voltage power supply module, and the other end of the power supply connecting line is provided with a plug for connecting external alternating current; the low-voltage power supply module is connected to the main control board, the data acquisition module and the high-voltage relay control module through a low-voltage power supply line; the main control board is connected to the high-voltage relay control module, the high-voltage power supply module and the data acquisition module through a signal line; the data acquisition module is connected to the high-voltage relay control module through a signal line; and the high-voltage relay is connected to the high-voltage relay control module through a low-voltage power supply line.

2. The new energy vehicle power battery pulse maintenance instrument according to claim 1, characterized in that, A screen is further arranged on the surface of the shell, the low-voltage power supply module is connected to the screen through a low-voltage power supply line, and the main control board and the data acquisition module are respectively connected to the screen through signal lines.

3. The new energy vehicle power battery pulse maintenance instrument according to claim 1, characterized in that, An indicator lamp is further arranged on the surface of the shell, and the indicator lamp is connected to the screen through a signal line.

4. The new energy vehicle power battery pulse maintenance instrument according to claim 1, characterized in that, An emergency switch is further arranged on the surface of the shell, and the emergency switch is connected to the main control board through a signal line.

5. The new energy vehicle power battery pulse maintenance instrument according to claim 1, characterized in that, A heat dissipation hole is further arranged on the side surface of the shell.

6. The new energy vehicle power battery pulse maintenance instrument according to claim 1, characterized in that, A wire harness storage box is further arranged on the lower part of the shell, and the power supply connecting line and the charging line are placed in the wire harness storage box when not working.

7. The new energy vehicle power battery pulse maintenance instrument according to claim 1, characterized in that, The direct current charging gun comprises nine holes, namely a high-voltage direct current power supply positive pole, a high-voltage direct current power supply negative pole, a low-voltage auxiliary power supply positive pole, a low-voltage auxiliary power supply negative pole, a first charging connection confirmation end, a second charging connection confirmation end, a charging communication high end, a charging communication low end and a ground end; the low-voltage auxiliary power supply positive pole and the low-voltage auxiliary power supply negative pole are collectively referred to as a low-voltage auxiliary power supply end, and the charging communication high end and the charging communication low end are collectively referred to as a charging communication end; correspondingly, the direct current charging port of the electric vehicle also comprises nine holes.

8. The new energy vehicle power battery pulse maintenance instrument according to claim 7, characterized in that, The low-voltage auxiliary power end of the direct current charging gun is connected to the low-voltage auxiliary power end of the high-voltage relay control module through a low-voltage power line, the first charging connection confirmation end of the direct current charging gun is connected to the first charging connection confirmation end of the high-voltage relay control module through a signal line, the first charging connection confirmation end of the high-voltage relay control module is also connected to the first charging connection confirmation end of the main control panel through a signal line; the charging communication end of the direct current charging gun is connected to the charging communication end of the data acquisition module through a signal line; the high-voltage direct current power positive pole of the direct current charging gun is connected to the high-voltage direct current power positive pole of the high-voltage power module through a high-voltage power line in series with the high-voltage relay; the high-voltage direct current power negative pole of the direct current charging gun is connected to the high-voltage direct current power negative pole of the high-voltage power module through a high-voltage power line; the ground wire end of the direct current charging gun is connected to the ground wire end of the high-voltage power module; the second charging connection confirmation end of the direct current charging gun is connected to the ground wire end through a resistor; the low-voltage power module is connected to the working power end of the main control panel, the data acquisition module and the high-voltage relay control module through low-voltage power lines respectively; the signal end of the main control panel is connected to the signal end of the high-voltage power module and the data acquisition module through signal lines respectively; the signal end of the data acquisition module is also connected to the signal end of the high-voltage relay control module through a signal line; the low-voltage power end of the high-voltage relay is connected to the low-voltage power end of the high-voltage relay control module through a low-voltage power line.

9. The new energy vehicle power battery pulse maintenance instrument according to claim 1, characterized in that, The output current of the high-voltage power module to the direct current charging gun is 1A-60A, and the output voltage is 200V-750V.

10. The new energy vehicle power battery pulse maintenance instrument according to claim 1, characterized in that, The output voltage of the low-voltage power module is 10V-14V.

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