Full-automatic battery liquid adding device for storage battery of motor train unit

Abstract

The full-automatic battery liquid adding device comprises a battery liquid box, an electromagnetic valve I, a liquid adding motor, an electromagnetic valve II, a hydraulic detector, an electromagnetic valve III, a liquid filling prompt box, a floating switch, an electromagnetic valve V, a pumpback motor and a waste liquid box, the liquid adding motor is connected with the battery liquid box and the battery pack through the electromagnetic valve I. The hydraulic detector is installed at an inlet of a battery pack pipeline and detects internal pressure. The electromagnetic valve II is arranged between the liquid adding motor and the battery pack and is controlled by the hydraulic detector; the electromagnetic valve III is connected with the liquid adding motor and the waste liquid box and provided with an exhaust hole I; the bottom of the flooded prompt box is connected with a pumpback motor, and the top of the flooded prompt box is connected with an exhaust hole II through an electromagnetic valve V; the floating switch is triggered when full of liquid, and the control panel closes the electromagnetic valve I; the technical problem that in the prior art, the liquid adding automation level of the storage battery of the motor train unit is low is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of rail transit batteries, and in particular relates to a fully automatic battery liquid filling device for a motor vehicle battery. Background Art

[0002] In the modern rail transit industry, batteries are one of the key components of train operation, and their performance directly affects the stable operation and safety of the train. At present, there are two main methods for filling batteries with battery fluid: gravity filling and machine filling.

[0003] Gravity filling is a traditional manual filling method, where operators use a measuring cup and a funnel to manually inject battery liquid into the battery. This method is simple to operate, but inefficient, and is prone to liquid overflow and waste during the filling process. In addition, the accuracy and consistency of manual operations are difficult to guarantee, which may result in uneven filling of the battery pack, affecting battery performance and life.

[0004] The machine injection method uses a water pump to extract the battery liquid and then inject it into the battery; this method improves the efficiency of liquid injection to a certain extent and reduces the errors caused by manual operation. However, the existing machine injection equipment generally has the following disadvantages:

[0005] Unable to adjust the filling pressure according to different battery packs: During the filling process, existing equipment cannot adjust the maximum filling pressure in the battery cavity according to different models or specifications of battery packs, which may cause some batteries to be damaged due to excessive pressure, affecting their sealing and service life.

[0006] Unable to meet the demand for simultaneous refilling of multiple battery groups: Trains are usually equipped with multiple battery groups, which need to be refilled simultaneously; however, existing equipment can hardly meet this demand, resulting in a long refilling process and reduced maintenance efficiency.

[0007] The residual liquid in the pipeline is not pumped back cleanly: After the equipment is filled with liquid, it is required to pump back the remaining battery liquid in the pipeline to prevent liquid leakage and contamination; however, the existing machine filling equipment generally has the problem of unclean pumping back, and the residual liquid in the pipeline cannot be completely removed, which affects the cleaning and maintenance of the equipment and increases the complexity and risk of operation.

[0008] Therefore, the current battery fluid filling technology needs to be improved in terms of efficiency, flexibility and safety. Utility Model Content

[0009] Aiming at the deficiencies existing in the related technologies, the low level of automation in the prior art of battery refilling for electric train sets is solved. The utility model provides a fully automatic battery refilling device for battery refilling for electric train sets.

[0010] According to one aspect of the present application, a fully automatic battery filling device for a motor vehicle battery is provided, comprising: a battery liquid tank, a solenoid valve I, a filling motor, a solenoid valve II, a hydraulic detector, a solenoid valve III, a full liquid prompt box, a floating switch, a solenoid valve V, a pumping motor and a waste liquid tank; wherein one end of the filling motor is connected to the battery liquid tank through the solenoid valve I, and the other end is connected to the battery pack; the hydraulic detector is installed at the inlet of the battery pack pipeline and is configured to detect the internal pressure of the battery pack; one end of the pipeline where the solenoid valve II is located is connected between the filling motor and the solenoid valve I, and the other end is connected between the filling motor and the battery pack, and the solenoid valve II is controlled by the hydraulic detector to open and close; One end of the pipeline where the solenoid valve III is located is connected between the liquid adding motor and the battery pack, and the other end is connected to the waste liquid tank through the withdrawal motor. The solenoid valve III has an exhaust hole I; the full liquid prompt box is connected to the battery pack through the battery pack inflow liquid pipeline, the full liquid prompt box is connected to the withdrawal motor through a pipeline arranged at the bottom, and a pipeline with an exhaust hole II is arranged on the top of the full liquid prompt box, and the exhaust hole II is connected to the full liquid prompt box through the solenoid valve V; a floating switch is arranged on the liquid level of the full liquid prompt box, and the floating switch is triggered when the full liquid prompt box reaches the set capacity, the floating switch is actuated, and the control board sends a signal; the solenoid valve I is closed under the control of the signal sent by the control board to close the passage between the battery liquid tank and the battery pack.

[0011] In a possible implementation, solenoid valve I is closed by a signal from a control panel; solenoid valve III is opened by a signal from a control panel, and the pumping motor is started to pump the residual battery fluid in the pipeline into the waste liquid tank.

[0012] In a possible implementation, solenoid valve I is closed by a signal from a control panel; solenoid valve III is associated with the action of solenoid valve I, solenoid valve III opens when solenoid valve I is closed, starts the pumping motor, and pumps the residual battery fluid in the pipeline into the waste liquid tank.

[0013] In a possible implementation manner, the solenoid valve V and the solenoid valve I are opened and closed simultaneously.

[0014] In one possible embodiment, the hydraulic detector is configured as follows: when it is detected that the internal pressure of the battery pack has reached a maximum value, the hydraulic detector controls solenoid valve II to open and the filling motor to enter a self-circulation mode; when it is detected that the internal pressure of the battery pack has dropped to a set value, the solenoid valve II is controlled to close and the filling process continues.

[0015] In a possible implementation, it also includes: a shell and a cart, the shell is placed on the cart, and the battery liquid tank, solenoid valve I, a liquid adding motor, solenoid valve II, a hydraulic detector, solenoid valve III, a full liquid prompt box, a float switch, solenoid valve V, and a withdrawal motor are arranged in the shell on the cart; the waste liquid tank is arranged outside the shell.

[0016] In one possible implementation, two groups are provided on each cart: a battery liquid tank, a solenoid valve I, a liquid adding motor, a solenoid valve II, a hydraulic detector, a solenoid valve III, a full liquid prompt box, a floating switch, a solenoid valve V, a pumping motor and a waste liquid tank.

[0017] Based on the above technical scheme, the fully automatic battery filling device for EMU batteries of the utility model transports battery liquid from the battery liquid tank to the inside of the battery pack through the filling motor; the hydraulic detector detects the internal pressure of the battery pack in real time, and controls the opening and closing of the solenoid valve II according to the pressure to ensure that the pressure during the filling process is appropriate; when the battery liquid reaches the set capacity, the float switch triggers a signal, and the control panel closes the solenoid valve I and stops filling; after the filling is completed, the pumping motor starts, and the residual battery liquid in the pipeline is pumped back to the waste liquid tank through the solenoid valve III to ensure that there is no residual liquid in the pipeline, improve the filling efficiency, and automatically adjust the pressure in the battery cavity during filling to avoid damage to the battery pack due to excessive pressure, thereby ensuring the sealing and safety of the battery pack; the residual liquid in the pipeline is automatically pumped back, which improves the cleanliness and service life of the device and improves the automation and intelligence of EMU battery filling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 This is a schematic diagram of the pipeline connection of a fully automatic battery filling device for EMU batteries according to one embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the piping structure in the full liquid prompt box;

[0021] Figure 3 This is a schematic diagram of the appearance of the fully automatic battery filling device for EMU batteries;

[0022] Figure 4 It is the operation interface of the fully automatic battery filling device for EMU batteries.

[0023] In the figure:

[0024] 1. Battery fluid tank; 2. Solenoid valve I; 3. Liquid filling motor; 4. Solenoid valve II; 5. Hydraulic detector; 6. Solenoid valve III; 7. Full liquid reminder box; 8. Float switch; 9. Solenoid valve V; 10. Pumping motor; 11. Waste liquid tank; 12. Battery pack; 13. Exhaust hole I; 14. Exhaust hole II; 15. Control panel; 16. Casing; 17. Cart. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Thus, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In order to solve the problem of low automation level of battery filling in existing EMUs.

[0030] In one aspect of the present application, a fully automatic battery filling device for a train battery is provided. Figure 1, including: a battery liquid tank 1, a solenoid valve Ⅰ2, a liquid adding motor 3, a solenoid valve Ⅱ4, a hydraulic detector 5, a solenoid valve Ⅲ6, a full liquid prompt box 7, a floating switch 8, a solenoid valve Ⅴ9, a withdrawal motor 10 and a waste liquid tank 11; one end of the liquid adding motor 3 is connected to the battery liquid tank 1 through the solenoid valve Ⅰ2, and the other end is connected to the battery pack 12; the hydraulic detector 5 is installed at the entrance of the pipeline of the battery pack 12 and is configured to detect the internal pressure of the battery pack 12; one end of the pipeline where the solenoid valve Ⅱ4 is located is connected between the liquid adding motor 3 and the solenoid valve Ⅰ2, and the other end is connected between the liquid adding motor 3 and the battery pack 12, and the solenoid valve Ⅱ4 is controlled to open and close by the hydraulic detector 5; one end of the pipeline where the solenoid valve Ⅲ6 is located is connected to the liquid adding motor 3 and The battery pack 12 has one end and the other end is connected to the waste liquid tank 11 through the suction motor 10, and the solenoid valve III6 has an exhaust hole I13; the full liquid prompt box 7 is connected to the battery pack 12 through the battery pack 12 inflow liquid pipeline, the full liquid prompt box 7 is connected to the suction motor 10 through a pipeline arranged at the bottom, and a pipeline with an exhaust hole II14 is arranged on the top of the full liquid prompt box 7, and the exhaust hole II14 is connected to the full liquid prompt box 7 through the solenoid valve V9; a floating switch 8 is arranged on the liquid level of the full liquid prompt box 7, and the floating switch 8 is triggered when the full liquid prompt box 7 reaches the set capacity, the floating switch 8 is actuated, the control board 15 sends a signal, and the solenoid valve I2 is closed under the control of the signal sent by the control board 15 to close the passage between the battery liquid tank 1 and the battery pack 12.

[0031] In the above scheme, by setting up a liquid adding motor, multiple solenoid valves and a hydraulic detector, automatic detection and control of the battery liquid level is achieved. The working process is as follows:

[0032] Liquid adding stage: press the start switch, the solenoid valve Ⅰ2 opens, the liquid adding motor 3 starts, and the battery liquid in the battery liquid tank 1 begins to be injected into the battery pack 12 through the liquid adding motor 3; the hydraulic detector 5 monitors the pressure in the battery pack 12 in real time. When the pressure reaches the preset upper limit value, the hydraulic detector 5 controls the solenoid valve Ⅱ4 to open, and the liquid adding motor 3 enters the self-circulation mode. The battery liquid circulates internally and temporarily stops being injected into the battery pack 12; when the pressure in the battery pack 12 drops to the set value, the solenoid valve Ⅱ4 closes, and the liquid adding motor 3 continues to add liquid to the battery pack 12.

[0033] Stop when full of liquid: When the liquid in the full liquid prompt box 7 exceeds 1 liter, the float switch 8 is triggered, and the control board 15 receives the signal and issues a command to stop adding liquid; at this time, the solenoid valve I2 is closed, and the battery liquid stops flowing from the battery liquid tank 1 to the battery pack 12; at the same time, the solenoid valve III6 is opened, and the suction motor 10 is started to draw the remaining battery liquid in the pipeline back to the waste liquid tank 11.

[0034] As a possible implementation, the above solution further includes an alarm or prompting device. After the liquid addition is completed, the system prompts the completion of the liquid addition operation through sound and light to ensure that the operator is informed in time.

[0035] The device realizes battery filling and withdrawal, accurate control of the filling amount, and accurate detection and control of the voltage in the battery cavity through automated control, reducing manual operation errors and labor intensity and improving maintenance efficiency. At the same time, the setting of the waste liquid recovery system effectively avoids environmental pollution and pipeline pollution, and improves the cleanliness and service life of the device.

[0036] In a possible implementation, the solenoid valve I2 is closed by a signal from the control board 15 ; the solenoid valve III6 is opened by a signal from the control board 15 , and the pumping motor 10 is started to pump the residual battery liquid in the pipeline to the waste liquid tank 11 .

[0037] In the above scheme, after the battery is filled with liquid, the control board 15 sends a signal to close the solenoid valve I2, stopping the battery liquid from flowing from the battery liquid tank 1 to the battery pack 12; at the same time, the control board 15 sends a signal to open the solenoid valve III6, start the withdrawal motor 10, and recover the residual battery liquid in the pipeline to the waste liquid tank 11; at this time, the exhaust hole I13 of the solenoid valve III6, the battery pack 12 and the withdrawal motor 10 form a one-way channel to ensure that the liquid can be smoothly withdrawn.

[0038] The above arrangement avoids the influence of liquid residue on the system and the environment, and improves the cleanliness of the device.

[0039] In a possible implementation, solenoid valve I2 is closed by a signal from a control panel 15 ; solenoid valve III6 is associated with the action of solenoid valve I2 , and solenoid valve III6 opens when solenoid valve I2 is closed, starting the pumping motor 10 to pump the residual battery liquid in the pipeline into the waste liquid tank 11 .

[0040] In the above scheme, when the control board 15 sends a signal to close the solenoid valve I2, the solenoid valve III6 automatically opens, starts the suction motor 10, and sucks the residual battery liquid in the pipeline into the waste liquid tank 11; through electrical control, the exhaust hole I13 of the solenoid valve III6, the battery pack 12 and the suction motor 10 form a one-way channel to ensure the smooth suction of the liquid and avoid liquid retention in the pipeline.

[0041] The fully automatic battery filling device for EMU batteries of the above-mentioned implementation mode further sets a control process to ensure that the liquid recovery step can be automatically performed after each filling operation, thereby improving the automation level and reliability of the system.

[0042] In a possible implementation, the solenoid valve V9 and the solenoid valve I2 are opened and closed simultaneously.

[0043] In the above scheme, solenoid valve V9 operates synchronously with solenoid valve I2 to ensure the air pressure balance of the system during the process of adding liquid or withdrawing liquid, and avoid abnormal flow of liquid due to air pressure difference; when solenoid valve I2 is closed, solenoid valve V9 is also closed at the same time to ensure the sealing of the system; when solenoid valve I2 is opened, solenoid valve V9 is also opened at the same time to maintain the air pressure balance in the system.

[0044] Through synchronous control, the balance of liquid and air pressure in the system is ensured, further improving the stability of the device and the safety of operation.

[0045] In one possible embodiment, the hydraulic detector 5 is configured as follows: when it is detected that the internal pressure of the battery pack 12 reaches a maximum value, the hydraulic detector 5 controls the solenoid valve II4 to open and the filling motor 3 enters a self-circulation mode; when it is detected that the internal pressure of the battery pack 12 drops to a set value, the solenoid valve II4 is controlled to close and the filling process continues.

[0046] In the above scheme, the hydraulic detector 5 monitors the pressure changes in the battery pack 12 in real time; when the pressure reaches the maximum value, the hydraulic detector 5 controls the solenoid valve II4 to open, and the liquid adding motor 3 enters the self-circulation mode, stops adding liquid to the battery pack 12, and allows the liquid to circulate inside the liquid adding motor to avoid excessive liquid addition; when the pressure in the battery pack 12 drops to the set value, the hydraulic detector 5 controls the solenoid valve II4 to close, and the liquid adding motor 3 resumes normal liquid adding operation and continues to add liquid to the battery pack 12.

[0047] Through precise pressure monitoring and control, overfilling and underfilling are prevented, the accuracy and consistency of battery fluid volume are ensured, and the battery life is extended.

[0048] In a possible implementation, it also includes: a shell 16 and a cart 17, the shell 16 is placed on the cart 17, the battery liquid tank 1, the solenoid valve I2, the liquid adding motor 3, the solenoid valve II4, the hydraulic detector 5, the solenoid valve III6, the full liquid prompt box 7, the floating switch 8, the solenoid valve V9, and the suction motor 10 are arranged in the shell 16 on the cart 17; the waste liquid tank 11 is arranged outside the shell 16.

[0049] See also Figure 3 In the above scheme, all the main components are installed in the shell on the cart for easy movement and operation, and the waste liquid tank is arranged outside for easy collection and treatment of waste liquid; during operation, the entire liquid adding device is moved to the position of the battery pack that needs to be added by pushing the cart 17 to perform the liquid adding operation; when the liquid in the full liquid prompt box 7 exceeds the set capacity, the floating switch 8 is triggered, and the control board 15 sends a signal to stop the liquid addition and start the suction motor 10 to recover the residual liquid in the pipeline.

[0050] By integrating the entire device on a movable cart, the flexibility and convenience of the equipment are improved, making it easier to add liquid in different occasions. At the same time, the setting of the external waste liquid tank facilitates the collection and treatment of waste liquid, improving environmental protection performance.

[0051] In one possible implementation, two groups are provided on each cart 17: a battery liquid tank 1, a solenoid valve I2, a liquid adding motor 3, a solenoid valve II4, a hydraulic detector 5, a solenoid valve III6, a full liquid prompt box 7, a floating switch 8, a solenoid valve V9, a suction motor 10 and a waste liquid tank 11.

[0052] In the above scheme, two complete liquid adding devices are arranged on one cart, and liquid adding operation can be performed for two groups of batteries at the same time, thereby improving work efficiency. During operation, the two liquid adding devices are connected to the two battery groups respectively by pushing the cart 17, and the liquid adding operation is performed synchronously; when the liquid in the full liquid prompt box 7 exceeds the set capacity, the floating switch 8 is triggered, and the control panel 15 sends a signal to stop the liquid adding and start the suction motor 10 to recover the residual liquid in the pipeline.

[0053] By arranging multiple groups of liquid adding devices on one cart, the synchronous liquid adding operation of multiple battery groups is realized, the work efficiency is improved, and the time and labor intensity of a single operation are reduced.

[0054] The fully automatic battery liquid filling device for EMU batteries of the utility model has the following beneficial effects:

[0055] Improve the efficiency of adding liquid: The fully automatic battery filling device can realize fast and accurate battery liquid filling through the coordinated work of the solenoid valve and the filling motor, which greatly improves the filling efficiency and reduces the time and labor of manual operation.

[0056] Protect the sealing of the battery pack: The internal pressure of the battery pack is detected by the hydraulic detector, and the opening and closing of the solenoid valve II are controlled. The pressure in the battery cavity during liquid filling can be automatically adjusted according to the needs of different battery packs to avoid damage to the battery pack due to excessive pressure and ensure the sealing and safety of the battery pack.

[0057] Meeting the needs of adding liquid to multiple battery groups at the same time: Multiple battery groups can be added with liquid at the same time to meet the needs of adding liquid to multiple battery groups on the train, thereby improving the utilization efficiency of the equipment and the operating reliability of the train.

[0058] Thoroughly pump back the residual liquid in the pipeline: Through the cooperation of the pumping motor and the solenoid valve III, the residual battery liquid in the pipeline can be completely pumped back after the liquid addition is completed, preventing the residual liquid from corroding or polluting the equipment, thereby improving the cleanliness and service life of the device.

[0059] Realize automated operation: Through the coordinated work of the control panel and the float switch, it can automatically stop adding liquid and send a signal when the battery liquid reaches the set capacity, realizing fully automatic control of the liquid adding process, reducing human intervention, and reducing operational risks and error rates.

[0060] The fully automatic battery filling device for a motor vehicle battery according to an embodiment of the utility model is described in detail as follows:

[0061] The function of this EMU battery full-automatic battery filling device is to realize the automation of the EMU battery filling process, that is, the operator only needs to press the "start" button to manage the filling process. After the filling is completed, the task will be automatically stopped and the operator will be prompted by sound. In terms of performance, the DSP chip has outstanding anti-interference ability, and the structure adopts a two-in-one design, which greatly improves the space utilization rate. It has an overpressure monitoring and processing mechanism that is not controlled by the CPU, saving CPU resources. The innovation points are as follows:

[0062] 1. Description of the working process: ① Filling stage: Press the switch, solenoid valve Ⅰ and the filling motor work, and start filling the battery liquid; ② Full liquid stop: When the liquid in the full liquid prompt box exceeds 1L, the float switch is activated, the control panel sends a signal to stop adding liquid, and closes the solenoid valve Ⅰ; at the same time, the solenoid valve Ⅲ is opened, and the withdrawal motor is started to withdraw the residual liquid in the pipeline; ③ Completion prompt: After the filling is completed, sound and light prompts are used.

[0063] Different upper limits of the filling pressure can be set according to the requirements of different battery packs. A hydraulic detector is installed at the inlet of the battery pack pipeline. When the internal pressure of the battery pack reaches the maximum value, the hydraulic detector controls the solenoid valve II to open, and the filling motor enters the self-circulation mode, and then the hydraulic pressure in the battery pack cavity decreases, and then the solenoid valve II is closed, and the filling process continues.

[0064] 2. When pulling back

[0065] By means of electrical control, the electromagnetic valves I and V are closed, the liquid adding motor is stopped, and the electromagnetic valve III is opened, so that the exhaust hole of the electromagnetic valve III, the battery pack and the withdrawal motor form a one-way only channel, and the water pipe layout in the full liquid prompt box is specially processed as follows in terms of structure to ensure that the liquid flowing into the battery pack is sucked into the withdrawal motor as soon as possible. The structure is as follows Figure 2 As shown, start the pumping motor and begin pumping liquid.

[0066] 3. Structural design

[0067] The fully automatic battery filling device for EMU batteries optimizes the internal structure according to user needs, increases the motor power, and meets the design goal of filling two groups of batteries at the same time.

[0068] 4. The device is designed with a simple operation interface. The operation interface of this product only contains an on / off button and necessary prompt devices (indicator light, alarm, time, power display), see Figure 4 .

[0069] In the above embodiment, DSP is used as a processor for the first time to quickly process key tasks, greatly improving the anti-interference ability of the equipment in a complex railway electromagnetic environment.

[0070] Add external hydraulic testing equipment to increase the internal circulation pipeline. At the same time, add hydraulic testing equipment to directly control the switch of the internal circulation pipeline to ensure that the pressure in the pipe does not exceed the standard.

[0071] The structure adopts a simple appearance design to facilitate user operation; the internal structure is optimized, integrating two independent pumping and filling devices, optimizing the layout of the water pipes in the full liquid prompt box, and improving the pumping efficiency and the sealing of the box.

[0072] In summary, the fully automatic battery filling device for EMU batteries of this embodiment:

[0073] 1. Using DSP as the central processor, compared with other processors, it has the characteristics of fast computing speed, high stability and strong anti-interference ability in the railway electromagnetic environment.

[0074] 2. The device is designed to work fully automatically, that is, the operator just presses "start" and the system stops automatically after the battery filling is completed, saving labor costs.

[0075] 3. Innovatively add an external pressure detector and a water circuit self-circulation design to achieve self-regulation of pressure without occupying CPU resources, ensuring that the pressure inside the pipe does not exceed the standard.

[0076] 4. The innovative water pipe structure layout of the full liquid warning box allows the battery pack return liquid to form a seal with the withdrawal port immediately, so that the liquid can be withdrawn as soon as possible to ensure the cleanliness of the pipeline.

[0077] The above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation method of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for which protection is requested in the utility model.

Claims

1. A fully automatic battery filling device for EMU batteries, characterized in that: include: Battery liquid tank (1), solenoid valve I (2), liquid adding motor (3), solenoid valve II (4), hydraulic pressure detector (5), solenoid valve III (6), full liquid prompt box (7), floating switch (8), solenoid valve V (9), withdrawal motor (10) and waste liquid tank (11); One end of the liquid adding motor (3) is connected to the battery liquid tank (1) through the solenoid valve I (2), and the other end is connected to the battery pack (12); The hydraulic pressure detector (5) is installed at the inlet of the pipeline of the battery pack (12) and is configured to detect the internal pressure of the battery pack (12); One end of the pipeline where the solenoid valve II (4) is located is connected between the liquid adding motor (3) and the solenoid valve I (2), and the other end is connected between the liquid adding motor (3) and the battery pack (12). The solenoid valve II (4) is controlled by the hydraulic detector (5) to open and close. One end of the pipeline where the electromagnetic valve III (6) is located is connected between the liquid adding motor (3) and the battery pack (12), and the other end is connected to the waste liquid tank (11) through the withdrawal motor (10). The electromagnetic valve III (6) has an exhaust hole I (13); The full liquid prompt box (7) is connected to the battery pack (12) through a liquid inflow pipeline of the battery pack (12), the full liquid prompt box (7) is connected to the pumping motor (10) through a pipeline arranged at the bottom, a pipeline with an exhaust hole II (14) is arranged at the top of the full liquid prompt box (7), and the exhaust hole II (14) is connected to the full liquid prompt box (7) through an electromagnetic valve V (9); A floating switch (8) is provided at the liquid level of the full liquid prompt box (7), and when the full liquid prompt box (7) reaches a set capacity, the floating switch (8) is triggered, the floating switch (8) is actuated, and the control panel (15) sends a signal; The solenoid valve I (2) is closed in response to a signal from the control panel (15) to close the passage between the battery liquid tank (1) and the battery pack (12).

2. The fully automatic battery filling device for EMU batteries according to claim 1 is characterized in that: Solenoid valve I (2) is closed by a signal from the control board (15); The electromagnetic valve III (6) is opened by a signal from the control panel (15), and the pumping motor (10) is started to pump the residual battery liquid in the pipeline to the waste liquid tank (11).

3. The fully automatic battery filling device for EMU batteries according to claim 1 is characterized in that: Solenoid valve I (2) is closed by a signal from the control board (15); The electromagnetic valve III (6) is associated with the electromagnetic valve I (2) in operation. When the electromagnetic valve I (2) is closed, the electromagnetic valve III (6) opens, starts the suction motor (10), and sucks the residual battery liquid in the pipeline into the waste liquid tank (11).

4. The fully automatic battery filling device for EMU batteries according to claim 3 is characterized in that: Solenoid valve V (9) opens and closes simultaneously with solenoid valve I (2).

5. The fully automatic battery filling device for EMU batteries according to claim 4 is characterized in that: The hydraulic detector (5) is configured as follows: when it is detected that the internal pressure of the battery pack (12) reaches a maximum value, the hydraulic detector (5) controls the solenoid valve II (4) to open, and the liquid adding motor (3) enters a self-circulation mode; when it is detected that the internal pressure of the battery pack (12) drops to a set value, the solenoid valve II (4) is controlled to close, and the liquid adding process continues.

6. The fully automatic battery liquid filling device for EMU batteries according to claim 5 is characterized in that: Also includes: A housing (16) and a trolley (17), wherein the housing (16) is placed on the trolley (17), a battery liquid tank (1), a solenoid valve I (2), a liquid adding motor (3), a solenoid valve II (4), a hydraulic detector (5), a solenoid valve III (6), a full liquid prompt box (7), a floating switch (8), a solenoid valve V (9), and a withdrawal motor (10) are arranged inside the housing (16) on the trolley (17); and a waste liquid tank (11) is arranged outside the housing (16).

7. The fully automatic battery liquid filling device for EMU batteries according to claim 6 is characterized in that: Each cart (17) is provided with two groups: a battery liquid tank (1), a solenoid valve I (2), a liquid adding motor (3), a solenoid valve II (4), a hydraulic pressure detector (5), a solenoid valve III (6), a full liquid prompt box (7), a floating switch (8), a solenoid valve V (9), a re-drawing motor (10) and a waste liquid tank (11).

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