A battery capacity detector

Abstract

The utility model discloses a kind of battery capacity detection instrument, it is related to battery detection technical field, including handle, machine case, the handle is provided with touch screen display for interaction, resistance detection circuit is provided in the handle, the handle is fixedly connected with machine case outer wall, the machine case outer wall is also fixedly installed with connecting box, test assembly is provided in the handle, multiple electrode connectors are provided in the connecting box to be connected with battery electrode;The device is discharged by energy-consuming component to battery, and cooperates battery internal resistance measuring instrument auxiliary detection, to accurately detect battery capacity, not only can improve detection efficiency, but also can reduce working intensity when detecting.

Description

Technical Field

[0001] This utility model relates to the field of battery testing technology, specifically a battery capacity tester. Background Technology

[0002] The "Railway Communication Maintenance Rules" clearly define the maintenance cycle and capacity test requirements for battery packs. It stipulates that 12V batteries should undergo a capacity test once a year starting from the third year after they are put into operation, and 2V batteries should undergo a capacity test once a year starting from the sixth year after they are put into operation.

[0003] When commercially available internal resistance meters and battery testers test batteries, they measure the current battery status, including voltage and resistance. However, if the battery is fully charged, the test results obtained using these instruments cannot directly determine the battery's current capacity. In this case, a discharge test is required. This test involves discharging the battery for a fixed period of time to accurately determine its capacity. Furthermore, during the discharge test, the changes in the battery's internal resistance during use can also be detected, providing further evidence of the battery's capacity.

[0004] Currently, the industry commonly uses constant current discharge or internal resistance testing methods for battery capacity assessment. Traditional discharge testing requires fully discharging the battery to its cutoff voltage, a time-consuming process that necessitates frequent manual data recording and calculation of remaining capacity. This is not only cumbersome and labor-intensive but also susceptible to errors introduced by environmental temperature fluctuations or insufficient load stability. While relying solely on internal resistance measurement can quickly reflect battery aging, it cannot comprehensively characterize the actual usable capacity, especially under complex operating conditions where it fails to meet high-precision testing requirements. Furthermore, existing testing equipment is mostly designed for specific voltage levels, lacking flexible adjustment capabilities. When dealing with batteries of different specifications and voltage platforms, it is necessary to replace the equipment or recalibrate parameters, resulting in limited applicability and low resource utilization. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model proposes the following technical solution: A battery capacity tester includes a handle and a chassis. The handle is equipped with an interactive touch screen display and a resistance detection circuit is installed inside the handle. The handle is fixedly connected to the outer wall of the chassis, and a connection box is also fixedly installed on the outer wall of the chassis. The handle contains a test component, and the connection box contains multiple electrode connectors for connecting to the battery electrodes.

[0006] Furthermore, the testing component includes a tungsten wire and a slider. Connecting electrodes are fixedly installed at both ends of the tungsten wire. The connecting electrodes are fixedly connected to the inner wall of the chassis. A support rod is fixedly installed on the connecting electrode. The support rod is fixedly connected to the handle. The support rod supports the two connecting electrodes. One tungsten wire and two connecting electrodes constitute a set of energy-consuming components. Two sets of energy-consuming components are provided inside the chassis. When the energy-consuming components are working, the scale will carry away the heat in the energy-consuming components through airflow.

[0007] Furthermore, the slider is slidably connected to the inner wall of the chassis, and an adjusting screw is rotatably installed on the chassis. The adjusting screw is connected to the slider by a thread. The slider is made of rubber material, and a scale pointer is provided on one side of the slider. The scale pointer on the slider cooperates with the scale on the top grid to display the current position of the slider. In actual use, it can display the current resistance or power of the energy-consuming component.

[0008] Furthermore, a fixing frame is fixedly installed on the side of the slider near the energy-consuming component. Two fixing frames are provided on the slider. The fixing frames are slidably connected to the support rod. Two claws are rotatably installed inside the fixing frames. The claws are symmetrically arranged on the fixing frames to clamp the tungsten wire. A clamping torsion spring is provided between the claws and the fixing frames. The claws are in contact with the outer wall of the tungsten wire. The inner wall of the claws is in close contact with the outer wall of the tungsten wire through the clamping torsion spring. The claws are used to conduct current to the tungsten wire.

[0009] Furthermore, a vertical wire is fixedly installed on the claw, one end of which is disposed inside the slider. A horizontal wire is fixedly installed inside the slider and is fixedly connected to the vertical wire. The vertical wire, the horizontal wire, and the claw are used to conduct current.

[0010] Furthermore, the electrode connector includes a large turntable, a connecting wire, and an electrode plug. The large turntable is rotatably mounted inside the connecting box. A torsion spring is provided between the large turntable and the connecting box. One end of the connecting wire is located inside the large turntable and is coiled around it. The torsion spring on the large turntable is used to tighten the connecting wire on the turntable. One of the two electrode connectors inside the connecting box is a positive contactor, and the other is a negative contactor. A left indirect wire is connected to the large turntable of the positive contactor. The other end of the left indirect wire is fixedly connected to a connecting electrode in the energy-consuming component to transmit current. A right indirect wire is connected to the large turntable of the negative contactor. A flexible indirect wire is rotatably mounted on one end of the slider. A middle wire reel is provided on the flexible indirect wire. One end of the middle wire reel is connected to the horizontal wire, and the other end is connected to the right indirect wire.

[0011] Furthermore, one end of the connecting line is fixedly connected to the electrode plug, which is located outside the connecting box. A copper disk is fixedly installed inside the electrode plug for contacting the battery electrode. The copper disk is fixedly connected to one end of the connecting line. Two clamps are slidably installed inside the electrode plug, and the clamps are symmetrically arranged inside the electrode plug.

[0012] Furthermore, a tension spring is provided between the gripper and the electrode plug. The gripper cooperates with the motor that holds the battery through the tension spring to facilitate the testing. The side of the gripper away from the copper plate is provided with an inclined surface to facilitate being squeezed by the motor and thus moved. The gripper is arc-shaped.

[0013] Furthermore, an outer cover is fixedly installed at one end of the electrode plug. The outer cover is made of flexible rubber material and is used to cover the battery electrode.

[0014] Compared with the prior art, the advantages of this utility model are: (1) This device performs a discharge experiment on the battery through the energy-consuming component and assists in the detection with the battery internal resistance measuring instrument, thereby accurately detecting the battery capacity. This not only improves the efficiency of the detection but also reduces the workload during the detection. (2) By adjusting the position of the claw on the energy-consuming component, the power of the energy-consuming component can be changed, allowing the device to detect batteries of different voltages and expanding the applicability of the device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a cross-sectional structural diagram of the chassis and top grid of this utility model.

[0017] Figure 3 This is a schematic diagram of the tungsten wire structure of this utility model.

[0018] Figure 4 This is a cross-sectional structural diagram of the support rod, slider, and fixing frame of this utility model.

[0019] Figure 5 This is a schematic diagram of the fixing frame structure of this utility model.

[0020] Figure 6 This is a schematic diagram of the left-side wiring structure of this utility model.

[0021] Figure 7 This is a cross-sectional structural diagram of the connecting box, electrode plug, outer cover, and flexible pressure strip of this utility model.

[0022] Figure 8 for Figure 7 Enlarged view of a portion of point A in the middle.

[0023] Figure 9 This is a schematic diagram of the electrode plug structure of this utility model.

[0024] Figure 10 This is a circuit diagram of the present invention.

[0025] Reference numerals: 101-Handle; 102-Touchscreen display; 103-Chassis; 104-Top grid; 105-Connection box; 106-Scale; 20-Test assembly; 201-Connecting electrode; 202-Tungsten wire; 203-Support rod; 204-Slider; 205-Horizontal connection wire; 206-Vertical connection wire; 207-Fixing bracket; 208-Claw; 209-Adjusting screw; 210-Rotation knob; 30-Electrode connector; 301-Large turntable; 302-Connecting wire; 303-Electrode plug; 304-Copper disc; 305-Tension spring; 306-Clamp; 307-Outer cover; 308-Flexible pressure strip; 309-Left indirect connection wire; 310-Right indirect connection wire; 311-Fine indirect connection wire; 312-Middle wire reel. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0027] Example 1: This embodiment discloses a battery capacity tester, such as... Figure 1 and Figure 2 As shown, the device includes a handle 101 and a chassis 103. The handle 101 is equipped with a touchscreen display 102 for interaction. A resistance detection circuit is installed inside the handle 101. This resistance detection circuit uses a commonly used battery resistance detection circuit in the prior art, and its purpose is to detect the internal resistance value of the battery. The handle 101 is fixedly connected to the outer wall of the chassis 103. A connecting box 105 is also fixedly installed on the outer wall of the chassis 103. The outer wall of the chassis 103 is provided with a device for interaction with… The buckle connected by the fabric tape is used to fix the device to one side of the battery being tested. The bottom of the chassis 103 is provided with an air intake grille, and the top of the chassis 103 is fixedly installed with a top grid 104. A scale 106 is provided on one side of the top grid 104. The scale 106 is provided inside the chassis 103. The scale 106 is located at the bottom air intake grille position of the chassis 103. The chassis 103 is used to drive the airflow into the chassis 103 and then out through the top grid 104.

[0028] The handle 101 is equipped with a test component 20, and the connection box 105 is equipped with multiple electrode connectors 30.

[0029] Example 2: This example further expands upon Example 1 by modifying the test component 20, such as... Figures 2 to 6 As shown, the test assembly 20 includes a tungsten wire 202 and a slider 204. Connecting electrodes 201 are fixedly installed at both ends of the tungsten wire 202. The connecting electrodes 201 are fixedly connected to the inner wall of the chassis 103. A support rod 203 is fixedly installed on the connecting electrode 201. The support rod 203 is fixedly connected to the handle 101. The two-electrode connector 30 is a support between the two connecting electrodes 201. The tungsten wire 202 and the two connecting electrodes 201 constitute a set of energy-consuming components. Two sets of energy-consuming components are provided inside the chassis 103. When the energy-consuming components are working, the scale 106 will carry away the heat in the energy-consuming components through airflow. The slider 204 is slidably connected to the inner wall of the housing 103. An adjusting screw 209 is rotatably mounted on the housing 103. The adjusting screw 209 is threadedly connected to the slider 204. A rotary knob 210 is provided at the end of the adjusting screw 209 outside the housing 103. The rotary knob 210 is used to facilitate the user to drive the adjusting screw 209 to rotate. The slider 204 is made of rubber. A scale pointer is provided on one side of the slider 204. The scale pointer on the slider 204 cooperates with the scale ruler 106 on the top grid 104 to display the current position of the slider 204. In actual use, it can display the current resistance or power of the energy-consuming component.

[0030] Example 3: This example further expands upon Example 2 by modifying slider 204, such as... Figures 3 to 6 As shown, a fixing frame 207 is fixedly installed on the side of the slider 204 near the energy-consuming component. Two fixing frames 207 are provided on the slider 204. The fixing frame 207 is slidably connected to the support rod 203. Two claws 208 are rotatably installed inside the fixing frame 207. The claws 208 are symmetrically arranged on the fixing frame 207 to clamp the tungsten wire 202. A clamping torsion spring is provided between the claws 208 and the fixing frame 207. The inner wall of the claw 208 is in close contact with the outer wall of the tungsten wire 202 through a clamping torsion spring. The claw 208 is used to conduct current to the tungsten wire 202. A vertical wire 206 is fixedly installed on the claw 208. One end of the vertical wire 206 is set in the slider 204. A horizontal wire 205 is fixedly installed in the slider 204. The horizontal wire 205 is fixedly connected to the vertical wire 206. The vertical wire 206, the horizontal wire 205, and the claw 208 are used to conduct current.

[0031] Example 4: This example extends the electrode connector 30 based on Example 1, such as... Figure 1 , Figure 3 and Figures 6 to 9As shown, the electrode connector 30 includes a large turntable 301, a connecting wire 302, and an electrode plug 303. The large turntable 301 is rotatably mounted inside the connecting box 105. A torsion spring is provided between the large turntable 301 and the connecting box 105. One end of the connecting wire 302 is located inside the large turntable 301 and is coiled around the large turntable 301. A single torsion spring on the large turntable 301 is used to tighten the connecting wire 302 onto the large turntable 301. One of the two electrode connectors 30 inside the connecting box 105 is a positive contactor, and the other is a negative contactor. The large turntable 301 of the positive contactor is connected to a left-hand connecting wire. 309, the other end of the left indirect line 309 is fixedly connected to a connecting electrode 201 in the energy-consuming component to transmit current. The large turntable 301 of the negative contactor is connected to the right indirect line 310. One end of the slider 204 is rotatably mounted with a thin indirect line 311. A restoring torsion spring is provided between the thin indirect line 311 and the test component 20 to return the thin indirect line 311 to its initial state. A middle wire reel 312 is provided on the thin indirect line 311. One end of the middle wire reel 312 is connected to the horizontal connection 205. The other end of the middle wire reel 312 is connected to the right indirect line 310. The middle wire reel 312 is coiled around the thin indirect line 311.

[0032] Example 5: This example expands upon Example 1 by modifying electrode plug 303, such as... Figures 6 to 9 As shown, one end of the connecting line 302 is fixedly connected to the electrode plug 303, which is located outside the connecting box 105. A flexible pressure strip 308, made of rubber, is fixedly installed on the connecting box 105. The flexible pressure strip 308 is deformed by the electrode plug 303, thus clamping the electrode plug 303 onto the connecting box 105. A copper disk 304 is fixedly installed inside the electrode plug 303, which is used to contact the battery electrode. The copper disk 304 is fixedly connected to one end of the connecting line 302. Two clamps 306 are slidably installed inside the electrode plug 303. The clamps 306 are used to contact the battery electrode. The electrode plugs 303 are symmetrically arranged inside. A tension spring 305 is provided between the clamp 306 and the electrode plug 303. The clamp 306, through the tension spring 305, cooperates with the motor that clamps the battery to facilitate testing. The side of the clamp 306 away from the copper disk 304 is provided with an inclined surface to facilitate being squeezed and moved by the motor. The clamp 306 is arc-shaped and can be made of plastic material. An outer cover 307 is fixedly installed on one end of the electrode plug 303. The outer cover 307 is made of flexible rubber material and is used to cover the battery electrodes to ensure that the battery electrodes do not come into contact with other objects when the battery is being tested. In the specific use of the electrode connector 30, the user holds the electrode plug 303 in the electrode connector 30 and disengages the electrode plug 303 from the flexible pressure strip 308 on the connection box 105. Then, the electrode plug 303 will be connected to the positive or negative terminal of the battery. During connection, the user can pull the connecting wire 302 to extend the connecting wire 302, thereby adapting to the testing of batteries of different sizes. Generally, the positive and negative terminals of the battery are cylindrical, so when connecting the electrode plug 303 to the electrode, press the electrode plug 303 to make the clamp 306 squeeze open by the electrode. When pressing, it is necessary to ensure that the copper disk 304 is in contact with the surface above the motor, so as to maximize the contact area. The clamp 306 will use the tension spring 305 to hold the electrode plug 303 on the electrode to ensure that it will not loosen during use.

[0033] like Figure 10 As shown in the diagram, the power supply in this device circuit is provided by a storage battery. The switch is controlled by the touch screen display 102. The resistance detector represents the resistance detector circuit. The result obtained by the ammeter in the circuit diagram is displayed on the touch screen display 102.

[0034] Working principle: When using this device, first turn on the touch screen display 102. The touch screen display 102 will show the current status of the device. Before connecting the battery with the electrode connector 30, you need to ensure that the resistance in the power consumption component is at its minimum, or determine the resistance value to use in advance according to the battery voltage. At the same time, you also need to prepare the battery in advance. Before testing, you need to ensure that the battery is fully charged. Then, you can install the electrode connector 30 of this device on the positive and negative terminals of the battery respectively. It is worth noting that the positive and negative terminals should be installed as correspondingly as possible.

[0035] During testing, the internal resistance of the battery in a fully charged state needs to be tested first. At this time, the switch needs to be pressed to switch to the resistance tester circuit. After the resistance tester tests, the test result will be reflected on the touch screen display 102. The internal resistance value of the battery in a fully charged state can be recorded. Then, press the switch to switch to the discharge test to test the specific ampere-hour of the battery.

[0036] Before testing, it is necessary to confirm the location of the chuck 208 within the power-consuming component. For example, when testing a 12V battery, the current needs to be around 10A. This can be achieved by rotating the adjusting screw 209 to adjust the position of the chuck 208 within the chassis 103. This adjustment can also be made adaptively using an ammeter after testing has begun. The adjustment involves adjusting the distance between the chuck 208 and the connecting electrode 201, thus changing the resistance in the circuit (which is also the power of the power-consuming component). When the power-consuming component is operating, its scale 106 will also receive power from the battery. The power supply operates to prevent the energy-consuming components from generating high temperatures during continuous operation. The airflow driven by the scale 106 enters from the bottom of the chassis 103 and exits from the top grid 104. During the continuous discharge experiment, the discharge time is generally fixed. The purpose of the discharge is to consume the battery's charge, which is generally 2%-3% of the battery's rated total charge. After the discharge experiment is completed, the switch is pressed again to allow the resistance detector to detect the battery's internal resistance value after the discharge experiment. By combining the discharge experiment with the battery's internal resistance value after use, the accurate battery capacity can be obtained.

[0037] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.

Claims

1. A battery capacity tester, comprising a handle (101) and a chassis (103), characterized in that: The handle (101) is provided with a touch screen display (102) for interaction, and the handle (101) is provided with a resistance detection circuit. The handle (101) is fixedly connected to the outer wall of the chassis (103), and a connecting box (105) is also fixedly installed on the outer wall of the chassis (103). The handle (101) is provided with a test component (20), and the connection box (105) is provided with a plurality of electrode connectors (30) for connecting to the battery electrodes; The test component (20) includes a tungsten wire (202) and a slider (204). Connecting electrodes (201) are fixedly installed at both ends of the tungsten wire (202). The connecting electrodes (201) are fixedly connected to the inner wall of the chassis (103). A support rod (203) is fixedly installed on the connecting electrode (201). The support rod (203) is fixedly connected to the handle (101). The support rod (203) serves as a support between the two connecting electrodes (201). One tungsten wire (202) and two connecting electrodes (201) form a set of energy-consuming components. Two sets of energy-consuming components are provided inside the chassis (103). The slider (204) is slidably connected to the inner wall of the chassis (103). An adjusting screw (209) is rotatably installed on the chassis (103). The adjusting screw (209) is connected to the slider (204) by a thread. The slider (204) is made of rubber. A scale pointer is provided on one side of the slider (204). The scale pointer on the slider (204) cooperates with the scale ruler (106) on the top grid (104) to display the current position of the slider (204). In actual use, it can display the current resistance or power of the energy-consuming component.

2. The battery capacity tester according to claim 1, characterized in that: A mounting bracket (207) is fixedly installed on the side of the slider (204) near the energy-consuming component. Two mounting brackets (207) are provided on the slider (204). The mounting brackets (207) are slidably connected to the support rod (203). Two claws (208) are rotatably installed inside the mounting brackets (207). The claws (208) are symmetrically arranged on the mounting brackets (207) to clamp the tungsten wire (202). A clamping torsion spring is provided between the claws (208) and the mounting brackets (207). The claws (208) are in contact with the outer wall of the tungsten wire (202). The inner wall of the claws (208) is in close contact with the outer wall of the tungsten wire (202) through the clamping torsion spring. The claws (208) are used to conduct current to the tungsten wire (202).

3. The battery capacity tester according to claim 2, characterized in that: A vertical wire (206) is fixedly installed on the claw (208). One end of the vertical wire (206) is located inside the slider (204). A horizontal wire (205) is fixedly installed inside the slider (204). The horizontal wire (205) is fixedly connected to the vertical wire (206). The vertical wire (206), the horizontal wire (205), and the claw (208) are used to conduct current.

4. The battery capacity tester according to claim 1, characterized in that: The electrode connector (30) includes a large turntable (301), a connecting wire (302), and an electrode plug (303). The large turntable (301) is rotatably mounted inside the connecting box (105). A torsion spring is provided between the large turntable (301) and the connecting box (105). One end of the connecting wire (302) is located inside the large turntable (301) and is coiled around the large turntable (301). The torsion spring on the large turntable (301) is used to tighten the connecting wire (302) on the large turntable (301). One of the two electrode connectors (30) inside the connecting box (105) is a positive contactor, and the other is a negative contactor. The polar connector (30) is a negative contactor. The large turntable (301) of the positive contactor is connected to a left indirect line (309). The other end of the left indirect line (309) is fixedly connected to a connecting electrode (201) in the energy dissipation component to transmit current. The large turntable (301) of the negative contactor is connected to a right indirect line (310). A flexible indirect line (311) is rotatably mounted on one end of the slider (204). A middle wire disc (312) is provided on the flexible indirect line (311). One end of the middle wire disc (312) is connected to the horizontal wire (205), and the other end of the middle wire disc (312) is connected to the right indirect line (310).

5. The battery capacity tester according to claim 4, characterized in that: One end of the connecting line (302) is fixedly connected to the electrode plug (303). The electrode plug (303) is located outside the connecting box (105). A copper disk (304) is fixedly installed inside the electrode plug (303). The copper disk (304) is used to contact the battery electrode. The copper disk (304) is fixedly connected to one end of the connecting line (302). Two clamps (306) are slidably installed inside the electrode plug (303). The clamps (306) are symmetrically arranged inside the electrode plug (303).

6. The battery capacity tester according to claim 5, characterized in that: A tension spring (305) is provided between the gripper (306) and the electrode plug (303). The gripper (306) cooperates with the motor that clamps the battery through the tension spring (305) to facilitate the test. The side of the gripper (306) away from the copper disk (304) is provided with an inclined surface to facilitate being squeezed by the motor and thus moving. The gripper (306) is arc-shaped.

7. The battery capacity tester according to claim 5, characterized in that: One end of the electrode plug (303) is fixedly fitted with an outer cover (307), which is made of flexible rubber material and is used to cover the battery electrode.

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