A portable detection device for detecting the capacity of a battery

Abstract

The utility model discloses a kind of portable detection devices for detecting battery capacity, including shell device, detection value setting control device, voltage comparator module and detection circuit;Detection value setting control device, voltage comparator module, are respectively arranged in shell device;Detection value setting control device, voltage comparator module, are respectively connected with detection circuit;Among them, detection value setting control device includes control module, display screen and button;Display screen, button, are respectively connected with control module;Button can set detection threshold in display screen by control module;Voltage comparator module is used to compare the voltage of battery to be detected;Detection circuit includes first connecting end for being connected with the positive pole of battery to be detected and second connecting end for being connected with the negative pole of battery to be detected.The portable detection device of the utility model, its can efficiently realize capacity detection to battery.

Description

Technical Field

[0001] This utility model belongs to the field of testing device technology, specifically relating to a portable testing device for testing the capacity of a storage battery. Background Technology

[0002] The static testing track at the Xiajiao overhaul depot is only the length of three cars. During static testing of the train, only one unit car can be tested because there is no battery redundancy from another unit car. When activating the battery for the first time during static testing, the battery often fails to activate.

[0003] Currently, each train unit has a battery bank consisting of fifty-three individual battery cells connected in series. When one or more individual cells malfunction, an open circuit is created, preventing the battery bank from effectively outputting voltage and thus rendering the train's batteries inactive. When this battery inactivation failure occurs, the troubleshooting method involves three maintenance personnel using multimeters to measure and troubleshoot with all fifty-three cells under load. This method is time-consuming, wastes significant manpower, and hinders static commissioning.

[0004] Currently, there is a lack of a portable testing device for detecting battery capacity, which can efficiently achieve the detection of battery capacity.

[0005] Therefore, a new technology is needed to address the lack of a portable testing device for detecting battery capacity in existing technologies. Utility Model Content

[0006] To address the aforementioned problems in the prior art, this utility model provides a portable testing device for detecting the capacity of storage batteries, which can efficiently detect the capacity of storage batteries.

[0007] The present invention adopts the following technical solution:

[0008] A portable testing device for detecting the capacity of a storage battery includes a housing, a detection value setting and control device, a voltage comparator module, and a detection circuit.

[0009] The detection value setting control device and the voltage comparator module are both respectively installed in the housing device;

[0010] The detection value setting control device and the voltage comparator module are both connected to the detection circuit.

[0011] The detection value setting control device includes a control module, a display screen, and a button; the display screen and the button are each connected to the control module; the button can set the detection threshold displayed on the display screen through the control module.

[0012] The voltage comparator module is used to compare the voltage of the battery under test;

[0013] The detection circuit includes a first connection terminal for connecting to the positive terminal of the battery under test and a second connection terminal for connecting to the negative terminal of the battery under test.

[0014] Furthermore, the detection value setting control device also includes a voltmeter, which is connected to the detection circuit.

[0015] Furthermore, it also includes an audible and visual alarm device, which includes an indicator light; the indicator light is connected to the detection circuit.

[0016] Furthermore, the audible and visual alarm device also includes a warning light, which is connected to the detection circuit.

[0017] Furthermore, the audible and visual alarm device also includes a sounder, which is connected to the detection circuit.

[0018] Furthermore, it also includes a cooling fan; the cooling fan is disposed in the housing device and is connected to the detection circuit.

[0019] Furthermore, it also includes a power supply and a first control switch;

[0020] The first control switch is disposed in the detection circuit, and the first control switch is connected in series with the power supply.

[0021] The cooling fan, the detection value setting control device, and the voltage comparator module are connected in parallel in the detection circuit.

[0022] The cooling fan, the detection value setting control device, and the voltage comparator module are connected to the power supply through the detection circuit and the first control switch.

[0023] Furthermore, it also includes a second control switch; the voltage comparator module is provided in two; the first voltage comparator module and the second voltage comparator module are connected in parallel in the detection circuit, and the second control switch is provided between the two.

[0024] Furthermore, the housing device includes a first housing and a second housing; the second housing is disposed on the first housing, and an internal cavity is formed between the second housing and the first housing for housing electronic components.

[0025] Furthermore, the housing device is also provided with a handle.

[0026] Furthermore, the voltage display accuracy of the display screen is 0.01V or 0.1V.

[0027] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0028] A portable testing device for detecting battery capacity allows for the setting of detection thresholds (such as upper and lower voltage limits) via a "detection value setting control device" to assess battery capacity performance. For example, if the upper voltage limit is set to the nominal voltage (floating voltage without load) of the battery being tested, and the lower voltage limit is set to 0.7V, a voltage comparator module sets voltage values ​​less than 0.7V as alarm values. When the measured battery voltage is less than 0.7V, an open circuit is detected. If pressing the start button for 3 seconds causes the measured battery voltage to drop by approximately 15% to 30% and then stabilize at a certain value, releasing the start button will cause the measured battery voltage to rise back to the nominal voltage, indicating that the battery is in good condition. If pressing the start button causes the measured battery voltage to drop rapidly by more than 30% within 3 seconds without stopping, a problem exists with the battery. Attached Figure Description

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

[0030] Figure 1 This is a circuit diagram of a portable testing device (the battery is a simplified illustration and its size is not proportional to the actual dimensions) (the cooling fan, control module, voltmeter, voltage comparator module, load circuit, first control switch, second control switch, first connection terminal, and second connection terminal are simplified illustrations).

[0031] Figure 2 This is a front view of the housing assembly;

[0032] Figure 3 This is a left view of the housing assembly;

[0033] Figure 4 This is a top view of the housing assembly (with a simplified illustration of the cooling fan).

[0034] Figure label:

[0035] 1-Housing assembly; 11-First housing; 111-Handle; 12-Second housing; 121-Flip-top cover;

[0036] 2-Detection value setting control device; 21-Control module; 22-Start button; 23-Voltmeter;

[0037] 3-Voltage comparator module;

[0038] 4-Detection circuit; 41-First connection terminal; 42-Second connection terminal;

[0039] 5-Load circuit;

[0040] 6-Audible and visual alarm device; 61-Indicator light; 62-Warning light;

[0041] 7-Cooling fan;

[0042] 81 - First control switch; 82 - Second control switch;

[0043] 9-Storage battery. Detailed Implementation

[0044] The following will provide a clear and complete description of the concept, specific structure, and technical effects of this utility model in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of this utility model. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0045] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. Furthermore, the descriptions of "upper," "lower," "left," and "right" used in this utility model are only relative to the relative positional relationships of the various components of this utility model in the accompanying drawings.

[0046] Reference Figures 1 to 4 A portable testing device for detecting the capacity of a storage battery includes a housing 1, a detection value setting and control device 2, a voltage comparator module 3, and a detection circuit 4.

[0047] The detection value setting control device 2 and the voltage comparator module 3 are both respectively installed in the housing device 1;

[0048] The detection value setting control device 2 and the voltage comparator module 3 are both connected to the detection circuit 4.

[0049] The detection value setting control device 2 includes a control module 21, a display screen, and a button (i.e., a setting button); the display screen and the button are respectively connected to the control module 21; the button can set the detection threshold (such as the upper limit voltage value and lower limit voltage value for "comparison") on the display screen through the control module 21.

[0050] The voltage comparator module 3 is used to compare the voltage of the battery 9 to be tested; preferably, the voltage comparator module 3 is also connected to the control module 21.

[0051] The detection circuit 4 includes a first connection terminal 41 for connecting to the positive terminal of the battery 9 to be tested and a second connection terminal 42 for connecting to the negative terminal of the battery 9 to be tested.

[0052] Reference Figures 1 to 4 In one embodiment, the detection value setting control device 2 further includes a voltmeter 23, which is connected to the detection circuit 4. Preferably, the voltmeter 23 is also electrically connected to the control module 21, and the voltage value of the voltmeter 23 can be displayed on the display screen.

[0053] Reference Figures 1 to 4 In one embodiment, the detection value setting control device 2 further includes a load circuit 5 (hereinafter referred to as "load"); the load circuit 5 is connected to the detection circuit 4. Preferably, the load circuit 5 is also electrically connected to the control module 21; the detection value setting control device 2 further includes a start button 22; the start button 22 is connected to the control module 21; the start button 22 can control the load circuit 5 to operate and connect to the detection circuit 4 through the control module 21, so as to serve as the load of the battery 9 being tested.

[0054] Reference Figures 1 to 4 In one embodiment, the portable detection device further includes an audible and visual alarm device 6, which includes an indicator light 61; the indicator light 61 is connected to the detection circuit 4. Preferably, the indicator light 61 is also electrically connected to the control module 21; when the measured voltage value of the battery 9 is lower than a set detection threshold (e.g., lower than the lower limit voltage value of 0.7V), the indicator light 61 can illuminate to alert the testing personnel, indicating "battery 9 malfunction".

[0055] Reference Figures 1 to 4 In one embodiment, the audible and visual alarm device 6 further includes a warning light 62, which is connected to the detection circuit 4. Preferably, the warning light 62 is also electrically connected to the control module 21.

[0056] In one embodiment, the audible and visual alarm device 6 further includes a speaker (not shown in the figures), which is connected to the detection circuit 4 (the indicator light 61 and the speaker can constitute an audible and visual alarm) (or the warning light 62 and the speaker can constitute an audible and visual alarm). Preferably, the speaker is also electrically connected to the control module 21; the speaker is used for audible prompts.

[0057] In one embodiment, the control module 21 is a controller with a control program. The control program includes: a program for setting detection thresholds; a program for controlling one or more of an indicator light, warning light, and sound device; a program for controlling the operation of the load circuit; a program for processing voltage comparator module information; and a program for processing voltmeter information.

[0058] Reference Figures 1 to 4 In one embodiment, the portable detection device further includes a cooling fan 7; the cooling fan 7 is disposed in the housing device 1 and is connected to the detection circuit 4. Preferably, the cooling fan 7 is also electrically connected to the control module 21.

[0059] Reference Figures 1 to 4 In one embodiment, the portable detection device further includes a power supply (not shown in the figures) and a first control switch 81;

[0060] The first control switch 81 (openable and closable) is disposed in the detection circuit 4, and the first control switch 81 is connected in series with the power supply; wherein, the first control switch 81 is used to realize the circuit connection or the circuit disconnection.

[0061] The cooling fan 7, the detection value setting control device 2 (such as the control module 21), and the voltage comparator module 3 are connected in parallel in the detection circuit 4;

[0062] The cooling fan 7, the detection value setting control device 2 (such as the control module 21), and the voltage comparator module 3 are connected to the power supply through the detection circuit 4 and the first control switch 81.

[0063] In one embodiment, the power supply is a lithium battery, which is detachably mounted on the housing device 1.

[0064] Reference Figures 1 to 4 In one embodiment, the portable detection device further includes a second control switch 82; two voltage comparator modules 3 are provided; the first voltage comparator module and the second voltage comparator module are connected in parallel in the detection circuit 4, and the second control switch 82 is provided between them (in a closable manner); wherein, the second control switch 82 is used to realize circuit connection or circuit disconnection. Preferably, the load circuit 5 is connected in parallel with the second voltage comparator module, and together they are connected to the first voltage comparator module through the second control switch 82.

[0065] Reference Figures 1 to 4 In one embodiment, the housing device 1 includes a first housing 11 and a second housing 12; the second housing 12 is disposed on the first housing 11, and an internal cavity is formed between the second housing 12 and the first housing 11 for housing electronic components (such as control module 21 and cooling fan 7).

[0066] Preferably, the second housing 12 is connected to the first housing 11 by fasteners (such as screws).

[0067] Reference Figures 1 to 4 In one embodiment, the housing device 1 is further provided with a handle 111. Preferably, the first housing 11 is provided with the handle 111.

[0068] In one embodiment, the display screen, once configured, is positioned on the second housing 12; the buttons are located beside the display screen (not shown in the accompanying drawings). See reference... Figure 2 Preferably, the second housing 12 is also provided with a flip cover 121. When the flip cover 121 is closed, it covers the display screen and the button (i.e. the setting button), which helps to block dust. When the display screen and the button are used, the flip cover 121 is flipped open to expose the display screen and the button.

[0069] In one embodiment, the voltage display accuracy of the display screen is 0.01V or 0.1V. Preferably, the display screen can also display a current value in mA; a power value in W, wherein the power display accuracy is 0.01W; an energy consumption value in Wh; a capacity value in AH, wherein the capacity display accuracy is 0.01AH; an impedance value in Ω, wherein the impedance display accuracy is 0.1Ω; an internal resistance value in mΩ; and the operating time of the portable testing device.

[0070] Preferably, the display screen can also display the power level of the power supply (such as a lithium battery).

[0071] Reference Figures 1 to 4 In one embodiment, when the first control switch 81 is closed, the circuit is connected, the cooling fan 7 can work, and the display screen displays normally; otherwise, it indicates that the lithium battery (i.e., the power supply) in the device is low on power, and the lithium battery needs to be charged or replaced with a new lithium battery.

[0072] After ensuring that the display screen is displaying normally, in the normal display interface state, press and hold the button (i.e. the setting button) until the display screen displays the "Settings" state;

[0073] In "Settings" mode, the display shows numbers that flash in a cycle from low to high digits. A short press of the button (setting button) while a digit is flashing allows you to set a number from 1 to 9 for that digit. You can set the digit for the hundreds, tens, ones, and one decimal place. For example, after selecting "0" for the ones place and "2" for the tens place, a long press of the button (setting button) will set the upper limit voltage value to "20.0V". Similarly, you can set the lower limit voltage value; the set lower limit voltage value is "0.7V".

[0074] When testing the battery 9, connect the first connection terminal 41 of the testing circuit 4 (such as an alligator clip with a red insulating sleeve) to the positive terminal of the battery 9 being tested, and connect the second connection terminal 42 of the testing circuit 4 (such as an alligator clip with a black insulating sleeve) to the negative terminal of the battery 9 being tested.

[0075] Then, the second control switch 82 is closed, and the voltage value of the battery 9 is displayed on the screen.

[0076] Then, press the start button 22. The measured battery 9 is connected to the load (i.e., the load circuit 5). Within 3 seconds (the display shows the measured voltage), the voltage stabilizes at a certain value. The voltage drop range is 15% to 30%. Release the start button 22. If the voltage (the display shows the measured voltage) can return to the original voltage value, it indicates that the battery is in good condition.

[0077] If the start button 22 is pressed, the measured battery 9 is connected to the load (i.e., the load circuit 5). If the voltage (displayed on the screen) cannot stabilize within 3 seconds and drops by more than 40%, it indicates that the battery 9 has insufficient capacity. If the voltage drops below 0.7V, the indicator light 61 will light up and the alarm will sound, indicating that the battery 9 is damaged and needs to be replaced.

[0078] Finally, after the capacity performance test of the battery 9 is completed, disconnect the circuit connection of the second control switch 82 before the first connection terminal 41 and the second connection terminal 42 can be removed from the battery 9.

[0079] In one embodiment, safety precautions during the testing process include the following:

[0080] (1) Before using the portable testing device of this utility model to test the capacity performance of the storage battery 9, it is necessary to check the integrity of the electrical casing of the portable testing device. For example, if both the "first connection end 41 and the second connection end 42" are alligator clips with insulating sleeves, it is necessary to ensure that the insulating sleeves of the two alligator clips are undamaged.

[0081] (2) Before testing, the first control switch 81 must be turned on to ensure that the cooling fan 7 and the display screen are working properly.

[0082] (3) Connect the alligator clips according to the positive and negative terminals of the battery 9. After the two alligator clips are clamped on the positive and negative terminals of the battery 9 respectively, the second control switch 82 can be closed.

[0083] (4) After the test is completed, disconnect the circuit connection of the second control switch 82 before removing the two alligator clips on the battery 9.

[0084] In one embodiment, the battery cells of the B2B4 vehicle are tested:

[0085] (1) Test the "faulty" battery cell:

[0086] The portable testing device is set with an upper limit voltage of 2.1V (corresponding to the nominal voltage (floating voltage) of the battery) and a lower limit voltage of 0.7V.

[0087] During testing, press the start button 22 of the portable testing device. The battery 9 being tested is connected to the load (i.e., the load circuit 5). If the voltage drops to 0V within 2 seconds (as displayed on the screen), the indicator light 61 lights up, and the sounder emits an alarm sound, it indicates that the tested battery cell is "faulty" and needs to be replaced.

[0088] (2) Testing of “good” battery cells:

[0089] The portable testing device is set with an upper limit voltage of 2.1V (corresponding to the nominal voltage (floating voltage) of the battery) and a lower limit voltage of 0.7V.

[0090] During testing, press the start button 22 of the portable testing device. The battery 9 being tested is connected to the load (i.e., the load circuit 5). Within 3 seconds (the measured voltage is displayed on the screen), the voltage stabilizes at 1.75V and drops by 16.7%. After that, release the start button 22. If the voltage (the measured voltage is displayed on the screen) returns to 2.1V, it indicates that the tested battery cell is in good condition and does not need to be replaced.

[0091] In one embodiment, the battery pack of the B1 vehicle is tested:

[0092] The nominal voltage of a single battery cell in the B1 model vehicle is 1.3V. If seven battery cells are tested as a group, the nominal voltage of the battery pack is 9.1V.

[0093] Therefore, the upper limit voltage of the portable testing device is set to 9.1V (corresponding to the nominal voltage (floating voltage) of the battery pack) and the lower limit voltage is set to 0.7V;

[0094] During testing, the portable testing device displays a measured voltage of 9.23V (>9.1V, which is the floating voltage). Pressing the start button 22 connects the tested battery pack to the load (i.e., load circuit 5). After 3 seconds, the voltage (displayed on the screen) stabilizes at 7.19V, a drop of 22.1%. After releasing the start button 22, the voltage (displayed on the screen) can rise back to 9.23V, indicating that the battery pack is in good condition (i.e., the battery pack capacity performance is good) and there is no need to troubleshoot individual battery cells.

[0095] This invention relates to a portable testing device for detecting the capacity of storage batteries, which can efficiently detect the capacity of storage batteries.

[0096] Other aspects of the portable testing device for detecting battery capacity described in this utility model are found in the prior art and will not be repeated here.

[0097] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A portable testing device for detecting the capacity of a storage battery, characterized in that, It includes a housing assembly, a detection value setting and control device, a voltage comparator module, and a detection circuit; The detection value setting control device and the voltage comparator module are both respectively installed in the housing device; The detection value setting control device and the voltage comparator module are both connected to the detection circuit. The detection value setting control device includes a control module, a display screen, and a button; the display screen and the button are each connected to the control module; the button can set the detection threshold displayed on the display screen through the control module. The voltage comparator module is used to compare the voltage of the battery under test; The detection circuit includes a first connection terminal for connecting to the positive terminal of the battery under test and a second connection terminal for connecting to the negative terminal of the battery under test.

2. The portable testing device for detecting battery capacity according to claim 1, characterized in that, The detection value setting control device also includes a voltmeter, which is connected to the detection circuit.

3. A portable testing device for detecting battery capacity according to claim 1, characterized in that, It also includes an audible and visual alarm device, which includes an indicator light; the indicator light is connected to the detection circuit.

4. A portable testing device for detecting battery capacity according to claim 3, characterized in that, The audible and visual alarm device also includes a warning light, which is connected to the detection circuit.

5. A portable testing device for detecting battery capacity according to claim 1, characterized in that, It also includes a cooling fan; the cooling fan is disposed in the housing device and is connected to the detection circuit.

6. A portable testing device for detecting battery capacity according to claim 5, characterized in that, It also includes a power supply and a first control switch; The first control switch is disposed in the detection circuit, and the first control switch is connected in series with the power supply. The cooling fan, the detection value setting control device, and the voltage comparator module are connected in parallel in the detection circuit. The cooling fan, the detection value setting control device, and the voltage comparator module are connected to the power supply through the detection circuit and the first control switch.

7. A portable testing device for detecting battery capacity according to claim 6, characterized in that, It also includes a second control switch; the voltage comparator module is provided in two; the first voltage comparator module and the second voltage comparator module are connected in parallel in the detection circuit, and the second control switch is provided between them.

8. A portable testing device for detecting the capacity of a storage battery according to any one of claims 1 to 7, characterized in that, The housing device includes a first housing and a second housing; the second housing is disposed on the first housing, and an internal cavity is formed between the second housing and the first housing for housing electronic components.

9. A portable testing device for detecting the capacity of a storage battery according to any one of claims 1 to 7, characterized in that, The housing device is also provided with a handle.

10. A portable testing device for detecting the capacity of a storage battery according to any one of claims 1 to 7, characterized in that, The voltage display accuracy of the display screen is 0.01V or 0.1V.

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