Portable liquid adding device for storage battery of rail transit electric passenger car

Abstract

The utility model provides a rail transit electric passenger car storage battery portable liquid adding device which comprises a liquid outlet detection mechanism, a liquid storage tank and a liquid conveying pipe, the liquid conveying pipe is a hose, the inlet end of the liquid conveying pipe is connected with an outlet of the liquid storage tank through a pump, and the liquid outlet detection mechanism comprises a supporting circular plate, a filling pipe and a liquid level meter. The filling pipe penetrates through the supporting circular plate and is fixed to the supporting circular plate, an upper end opening of the filling pipe is connected to the outlet end of the liquid conveying pipe, the liquid level meter is located below the supporting circular plate and is fixedly connected with the filling pipe, a first wire arranged on the liquid level meter upwards penetrates through the supporting circular plate and then is connected with the controller, and the pump is connected with the controller through a second wire. According to the utility model, the liquid level meter detects the liquid level information in the storage battery, and the controller controls the pump to open and close according to the information, so that the functions of automatic liquid supplementing, real-time liquid level monitoring, automatic stopping and the like on the single storage battery are realized, the operation efficiency can be greatly improved, the maintenance process is optimized, the manpower and time cost is reduced, and the liquid adding accuracy is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery maintenance, in particular to a portable liquid-filling device for a battery of a rail transit electric passenger car. Background Art

[0002] The battery system is the power source for vehicle starting and emergency DC power supply, and is a key system to ensure the safe operation of the train. In order to ensure that the battery pack is in good working condition, the safety inspection of the battery cells is particularly important. The balanced maintenance team needs to check the appearance and liquid level of the battery cells during each maintenance process to ensure the safety and reliability of the equipment. Introduction to traditional battery liquid level addition and operation problems

[0003] (1) Traditional battery liquid level addition method:

[0004] Use an ESR tube (liquid level measuring tube) to measure the electrolyte liquid levels of multiple battery cells in the entire train one by one and replenish the liquid. After replenishing the liquid, measure the liquid level again. Repeat the addition and measurement until the liquid level reaches the standard height.

[0005] (2) There are problems with the traditional battery liquid level addition method:

[0006] a. When replenishing the electrolyte, except for the outermost cells which are easy to check, the remaining cells need auxiliary measurement and inspection.

[0007] b. The operating range for personnel is small, and it is difficult to refill the battery cells that are far away on the inside of the battery cart.

[0008] c. Since the liquid level cannot be seen clearly, a liquid level detector is required to repeatedly check and adjust the liquid level.

[0009] d. There are problems such as missing filling, over-filling and overflow.

[0010] In addition, the traditional battery liquid level addition operation requires two people to operate together, which consumes maintenance resources and wastes manpower costs. Utility Model Content

[0011] In view of this, the utility model aims to provide a portable liquid filling device for rail transit electric passenger car batteries, so as to conveniently and quickly fill the electric passenger car batteries with liquid stably and accurately.

[0012] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0013] A portable liquid filling device for rail transit electric passenger car batteries includes a liquid discharge detection mechanism, a liquid storage tank and an infusion tube. The infusion tube is a hose, and its inlet end is connected to the outlet of the liquid storage tank through a pump. The liquid discharge detection mechanism includes a supporting circular plate, a filling tube and a liquid level gauge. The filling tube passes through the supporting circular plate and is fixed to the supporting circular plate. The upper port of the filling tube is connected to the outlet end of the infusion tube. The liquid level gauge is located below the supporting circular plate and is connected and fixed to the filling tube. A first wire set on the liquid level gauge passes upward through the supporting circular plate and is connected to a controller. The pump is connected to the controller through a second wire.

[0014] Furthermore, the liquid level gauge is an electrode type liquid level gauge, including an upper probe, a middle probe and a lower probe, the upper probe, the middle probe and the lower probe are respectively connected and fixed to the filling pipe, and the upper probe, the middle probe, the lower probe and the filling pipe are respectively provided with an insulating layer on the outside.

[0015] Furthermore, the upper probe, the middle probe and the lower probe are respectively bound by waterproof insulating tape and the filling pipe.

[0016] Furthermore, the first guide wire and the infusion tube are both inserted into the threaded sheath tube.

[0017] Furthermore, a convex ring concentric with the supporting circular plate is provided on the bottom surface of the supporting circular plate near the filling pipe, and the convex ring is provided with an external thread and a matching threaded connection sleeve, and the liquid level meter and the filling pipe are located in the sleeve.

[0018] Compared with the prior art, the portable liquid filling device for rail transit electric passenger car battery described in the utility model has the following advantages:

[0019] (1) In the utility model, the liquid discharge detection mechanism is connected to the liquid storage tank through an infusion tube, and the infusion tube is a hose. The controller obtains the liquid level information in the battery and controls the pump to open and close according to the information, thereby realizing functions such as automatic liquid replenishment of the battery cell, real-time monitoring of the liquid level, and automatic stop. It can greatly improve the operating efficiency, optimize the maintenance process, reduce manpower and time costs, and improve the accuracy of liquid addition.

[0020] (2) In the utility model, a supporting circular plate is provided in the liquid discharge detection mechanism, and a filling pipe is fixed to the supporting circular plate. When liquid is added to the battery, the supporting circular plate is supported on the filling port of the battery, which is convenient for liquid addition operation. At the same time, the filling pipe, the upper probe, the middle probe and the lower probe for sensing the water level are ensured to be vertical, respectively, thereby improving the accuracy of liquid level detection and the accuracy of liquid addition. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of a portable liquid filling device for rail transit electric passenger car batteries according to an embodiment of the utility model;

[0023] Figure 2 This is a front view of the liquid outlet detection mechanism in this embodiment;

[0024] Figure 3 This is a left view of the liquid discharge detection mechanism in this embodiment;

[0025] Figure 4 This is a schematic diagram of the internal structure of the liquid discharge detection mechanism in this embodiment;

[0026] Figure 5 This is a schematic diagram of the supporting circular plate structure in this embodiment;

[0027] Description of reference numerals:

[0028] 1-liquid storage tank; 2-pump; 3-controller; 4-infusion tube; 5-liquid discharge detection mechanism; 51-support circular plate; 52-lower probe; 53-middle probe; 54-upper probe; 55-waterproof insulating tape; 56-sheath; 57-filling pipe; 58-insulating layer; 59-first wire; 511-convex ring; 512-threading hole, 613-through hole; 6-threaded sheath tube; 7-battery. DETAILED DESCRIPTION

[0029] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0030] Figure 1 As shown, the portable liquid filling device for rail transit electric passenger car battery includes a liquid discharge detection mechanism 5, a liquid storage tank 1, a pump 2 and a liquid infusion tube 4, wherein the liquid storage tank 1 and the pump 2 are preferably arranged on a trolley (not shown in the figure) to facilitate the movement of the liquid pumping tank 1. Preferably, the trolley is also provided with a mobile power supply, which provides electrical energy to the electrical components in the device. The inlet of the pump 2 is connected to the outlet of the liquid storage tank 1, and the liquid infusion tube 4 is a hose, whose inlet end is connected to the outlet of the pump 2, and the liquid discharge detection mechanism 5 is arranged at the outlet end of the liquid infusion tube 4.

[0031] The structure of the liquid discharge detection mechanism 5 is as follows: Figure 2 , Figure 3 , Figure 4As shown, it includes a support circular plate 51, a filling pipe 57 and a liquid level gauge. The diameter of the support circular plate 51 is not less than the aperture of the battery inlet, so as to ensure that the support circular plate 51 can cover and support the inlet. The filling pipe 57 penetrates the support circular plate 51 and is fixed to the support circular plate 51. The upper port of the filling pipe 57 is connected to the outlet end of the infusion tube 4. The liquid level gauge is located below the support circular plate 51. The liquid level gauge is an electrode type liquid level gauge, including an upper probe 54, a middle probe 53 and a lower probe 52. The specific height positions of the upper probe 54, the middle probe 53 and the lower probe 52 (the distance from the bottom end of the probe to the support circular plate) are determined according to the required height of the battery liquid level, wherein the middle probe 53 is used to detect the required height of the minimum liquid level of the battery, and the upper probe 54 is used to detect the required height of the maximum liquid level of the battery. The upper probe 54, the middle probe 53 and the lower probe 52 are arranged around the filling pipe 57. The upper probe 54, the middle probe 53 and the lower probe 52 are provided with an insulating layer 58 above their respective detection ends (the bottom ends of the probes). The filling pipe 57 is preferably a metal pipe, and its outer surface is also provided with an insulating layer 58. For example, the insulating layer 58 is a rubber sleeve or a waterproof insulating tape layer. The upper probe 54, the middle probe 53 and the lower probe 52 are respectively wrapped and bound with the filling pipe 57 by waterproof insulating tape 55 to fix the liquid level meter and prevent the upper probe 54, the middle probe 53 and the lower probe 52 from being connected through the filling pipe 57. In the utility model, the lower port of the filling pipe 57 is located below the lower probe 52. The structure of the supporting circular plate 51 is as follows: Figure 4 As shown, a through hole 513 for connecting with the filling pipe 57 is provided at the center thereof, and three threading holes 512 are provided around the through hole 513 of the supporting circular plate 51. The positions of the three threading holes 512 correspond to the arrangement positions of the upper probe 54, the middle probe 53 and the lower probe 52 around the filling pipe 57, and the threading holes 512 are connected with the through hole 513. The filling pipe 57 passes through the through hole 513 and is welded and fixed to the supporting circular plate 51. The first wires 59 of the upper probe 54, the middle probe 53 and the lower probe 52 are respectively passed through the corresponding threading holes 512 and are connected to the controller 3. The pump 2 is connected to the controller 3 through the second wire (not shown in the figure). The trolley carrying the liquid storage tank 1 is provided with a control box, and the controller 3 is arranged in the control box.

[0032] In the present utility model, the infusion tube 4 adopts a hose structure, which is convenient for moving the liquid discharge detection mechanism according to the position of the battery, and in the liquid discharge detection mechanism 5, the filling tube 57 is fixed on the supporting circular plate 51, and the liquid level meter is fixed on the filling tube 57, which reduces the volume of the liquid discharge detection mechanism 5, makes the overall structure of the liquid discharge detection mechanism 5 more compact, and is convenient for manual control, thereby improving the convenience of the liquid filling operation. When adding liquid to the battery 7, the operator only needs to insert the filling tube 57 and the liquid level meter into the battery, and the supporting circular plate 51 is supported on the battery filling port, so that the filling tube 57 and the upper, middle and lower three probes are all in a vertical state to ensure the accuracy of liquid level detection. Then turn on the mobile power supply and start the liquid filling operation. When the liquid filling starts, the middle probe 53 first detects the liquid level in the battery. If the liquid level in the battery 7 reaches or exceeds the position of the middle probe 53, it means that the liquid level in the battery 7 meets the standard, and the pump 2 is not turned on, that is, no liquid filling is required; if the liquid level in the battery 7 is lower than the position of the middle probe 53 at the beginning, it means that the liquid level in the battery 7 does not meet the standard, and the pump 2 is turned on, and the electrolyte is pumped into the battery 7 from the liquid storage tank 1 until the liquid level in the battery 7 reaches the position of the upper probe 54, and the liquid filling of one battery cell is completed. In this way, the liquid filling operation of multiple battery cells in the train is realized.

[0033] In the utility model, an indicator light and a buzzer can also be provided, and both the indicator light and the buzzer are electrically connected to the controller. When the middle probe 53 detects that the liquid level in the battery has reached the minimum height at the beginning of liquid addition, the indicator light flashes and the buzzer sounds an alarm, indicating that no liquid addition is required; if the liquid level in the battery is lower than the position of the middle probe 53, the liquid addition operation is started. During the liquid addition process, when the upper probe 54 detects that the electrolyte in the battery has reached the highest required position, the indicator light flashes and the buzzer sounds an alarm, indicating that the liquid addition is completed.

[0034] In the present invention, all first wires 59 and the infusion tube 4 are inserted into the threaded sheath tube 6 to facilitate manual control and protect the first wires 59 to ensure that the liquid level detection signal is accurately transmitted to the controller.

[0035] In the present invention, a convex ring 511 is provided on the bottom surface of the support circular plate 51 near the filling pipe 57, which is concentric with the support circular plate 51. The convex ring 511 is provided with an external thread and a matching threaded connection sleeve 56. The upper probe 54, the middle probe 53, the lower probe 52 and the filling pipe 57 are all located in the sleeve 56. The sleeve protects the upper probe 54, the middle probe 53, and the lower probe 52 to prevent the upper probe 54, the middle probe 53, and the lower probe 52 from colliding. When adding liquid, the sleeve 56 is removed and the liquid adding operation can be performed.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Portable liquid filling device for rail transit electric passenger car battery, characterized by: The invention comprises a liquid discharge detection mechanism (5), a liquid storage tank (1) and a liquid infusion tube (4); the liquid infusion tube (4) is a hose, the inlet end of which is connected to the outlet of the liquid storage tank (1) through a pump (2); the liquid discharge detection mechanism (5) comprises a supporting circular plate (51), a filling tube (57) and a liquid level gauge; the filling tube (57) passes through the supporting circular plate (51) and is fixed to the supporting circular plate (51); the upper end of the filling tube (57) is connected to the outlet end of the liquid infusion tube (4); the liquid level gauge is located below the supporting circular plate (51) and is connected and fixed to the filling tube (57); a first wire (59) of the liquid level gauge passes upward through the supporting circular plate (51) and is connected to a controller (3); and the pump (2) is connected to the controller (3) through a second wire.

2. The portable liquid filling device for rail transit electric passenger car battery according to claim 1 is characterized in that: The liquid level gauge is an electrode type liquid level gauge, comprising an upper probe (54), a middle probe (53) and a lower probe (52); the upper probe (54), the middle probe (53) and the lower probe (52) are respectively connected and fixed to a filling pipe (57); and the outer parts of the upper probe (54), the middle probe (53), the lower probe (52) and the filling pipe (57) are respectively provided with an insulating layer (58).

3. The portable liquid filling device for rail transit electric passenger car battery according to claim 2 is characterized in that: The upper probe (54), the middle probe (53), and the lower probe (52) are respectively bound together by means of a waterproof insulating tape (55) and a filling pipe (57).

4. The portable liquid filling device for rail transit electric passenger car battery according to claim 1 is characterized in that: The first guide wire (59) and the infusion tube (4) are both inserted into the threaded sheath tube (6).

5. The portable liquid filling device for rail transit electric passenger car battery according to claim 1 is characterized in that: The bottom surface of the supporting circular plate (51) is provided with a convex ring (511) concentric with the supporting circular plate (51) at a position close to the filling pipe (57); the convex ring (511) is provided with an external thread and a matching threaded connection sleeve (56); the liquid level meter and the filling pipe are located inside the sleeve (56).

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