A discharge detection device for lithium battery

Abstract

The utility model relates to the technical field of discharge detection of lithium batteries, and discloses a discharge detection device for lithium batteries, including a discharge detector and a detection cabinet. The discharge detector is used to detect the discharge process of lithium batteries. The detection cabinet is fixedly installed above the discharge detector. The detection cabinet is used to place the lithium batteries to be detected. An electrode head placement device is provided at the bottom of the detection cabinet. The electrode head placement device includes two electrode head slots. The electrode head slot on the left is fixedly installed at the bottom of the detection cabinet, and the electrode head slot on the right is slidably connected at the bottom of the detection cabinet. By arranging a sliding device at the bottom of the detection cabinet and slidingly connecting the electrode head slot on the right side at the bottom of the detection cabinet, the distance between the electrode heads of lithium batteries of different sizes can be adjusted, and it can be suitable for lithium batteries of different sizes for discharge detection, thereby improving the practicality of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of discharge detection of lithium batteries, in particular to a discharge detection device for lithium batteries. Background Art

[0002] Lithium battery is a kind of battery that uses lithium metal or lithium alloy as positive / negative electrode material and non-aqueous electrolyte solution. Due to the very active chemical properties of lithium metal, the processing, storage and use of lithium metal have very high environmental requirements. With the development of science and technology, lithium batteries have become mainstream. Charge and discharge detection is a necessary part after lithium battery production. The main functions of battery charge and discharge tester are: constant current discharge function of battery pack, online monitoring function and fast capacity analysis function, activation function, etc.

[0003] At present, after the existing lithium batteries are produced, the staff needs to send them to the discharge detection cabinet for testing to see whether the produced lithium batteries meet the requirements. Although the existing discharge detection cabinets have various detection functions, due to the inconsistent size specifications of lithium batteries, the lithium battery electrode heads need to be manually clamped during the detection process, and they are prone to falling off, affecting the detection efficiency. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies of the prior art, the utility model provides a discharge detection device for a lithium battery.

[0006] (II) Technical solution

[0007] To solve the above problems, the utility model provides the following technical solutions: a discharge detection device for lithium batteries, comprising a discharge detector and a detection cabinet, the discharge detector being used to detect the discharge process of the lithium battery, the detection cabinet being fixedly installed above the discharge detector, the detection cabinet being used to place the lithium battery to be detected, an electrode head placement device being arranged at the bottom of the detection cabinet, the electrode head placement device comprising two electrode head slots, the electrode head slot on the left being fixedly installed at the bottom of the detection cabinet, the electrode head slot on the right being slidably connected at the bottom of the detection cabinet, a slide groove being provided at the bottom of the detection cabinet, a threaded rod being rotatably connected inside the slide groove, a slider being rotatably connected on the threaded rod, the slider being slidably connected inside the slide groove, and the electrode head slot on the right being fixedly installed on the slider.

[0008] Preferably, a lithium battery is placed inside the detection cabinet, and two electrode heads are provided on the lithium battery. The two electrode heads can be placed inside the electrode head slots.

[0009] Preferably, a temperature sensor is provided inside the detection cabinet, a fire extinguisher is placed on the left side of the discharge detector and the detection cabinet, the fire extinguisher is fixed to one side of the discharge detector and the detection cabinet by two clamping rings, the air outlet end of the fire extinguisher is connected to a jet pipe, the end of the jet pipe extends into the interior of the nozzle, the nozzle is located inside the detection cabinet, and a control valve is provided on the jet pipe.

[0010] Preferably, a spring three is installed at the bottom of the electrode head slot, a contact piece is fixedly installed on the spring three, and the contact piece is electrically connected to the discharge detector.

[0011] Preferably, two gaskets are provided at the bottom of the detection cabinet, and the two gaskets are located at the rear side of the electrode head slot. A sliding rod is provided below the gasket, and the sliding rod is slidably connected to the bottom of the detection cabinet, and a spring 2 is sleeved on the surface of the sliding rod.

[0012] Preferably, a cover plate is installed on the detection cabinet by bolts, fans are arranged on both sides of the cover plate, two telescopic rods are slidably installed below the cover plate, a pressure plate is connected below the two telescopic rods, and a spring is sleeved on the telescopic rods.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a discharge detection device for lithium batteries, which has the following beneficial effects:

[0015] 1. The discharge detection device for lithium batteries is provided with a sliding device at the bottom of the detection cabinet, and is slidably connected to the bottom of the detection cabinet through the electrode head slot on the right side. The distance between the electrode heads of lithium batteries of different sizes can be adjusted, and the discharge detection can be applied to lithium batteries of different sizes, thereby improving the practicability of the device.

[0016] 2. The discharge detection device for lithium batteries, when the lithium battery inside the detection cabinet burns during the discharge process, the temperature sensor detects and sends an alarm signal to the control end, the control end sends an opening signal to the control valve, and the internal gas of the fire extinguisher is sprayed out from the nozzle through the jet pipe, covering the surface of the lithium battery to prevent the lithium battery from burning. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a discharge detection device for a lithium battery of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the regulating device of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure inside the cabinet of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the stabilizing device of the utility model.

[0021] In the figure: 1 discharge detector, 2 electrode head slot, 21 slide, 22 threaded rod, 23 slider, 24 spring three, 25 contact piece, 3 electrode head, 4 lithium battery, 5 temperature sensor, 6 pressure plate, 7 detection cabinet, 8 telescopic rod, 9 spring one, 10 cover plate, 11 fan, 12 nozzle, 13 control valve, 14 jet pipe, 15 clamping ring, 16 fire extinguisher, 17 gasket, 171 sliding rod, 172 spring two. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 4 The utility model provides a new technical solution: a discharge detection device for lithium batteries, including a discharge detector 1 and a detection cabinet 7, the discharge detector 1 is used to detect the discharge process of the lithium battery, the detection cabinet 7 is fixedly installed above the discharge detector 1, the detection cabinet 7 is used to place the lithium battery to be detected, and an electrode head placement device is arranged at the bottom of the detection cabinet 7, the electrode head placement device includes two electrode head slots 2, the electrode head slot 2 on the left side is fixedly installed at the bottom of the detection cabinet 7, and the electrode head slot 2 on the right side is slidably connected to the bottom of the detection cabinet 7, and a slide groove 21 is opened at the bottom of the detection cabinet 7, and a threaded rod 22 is rotatably connected inside the slide groove 21, and the threaded rod 22 Driven by a motor to rotate (the motor is not shown in the figure), the threaded rod 22 is rotatably connected to a slider 23, and the slider 23 is slidably connected inside the slide groove 21, and the electrode head slot 2 on the right is fixedly installed on the slider 23; a lithium battery 4 is placed inside the detection cabinet 7, and two electrode heads 3 are arranged on the lithium battery 4, and the two electrode heads 3 can be placed into the electrode head slot 2. By arranging a sliding device at the bottom of the detection cabinet 7 and slidingly connecting the electrode head slot 2 on the right side at the bottom of the detection cabinet 7, the distance between the electrode heads 3 can be adjusted according to different sizes of lithium batteries, and it can be suitable for discharge detection of lithium batteries of different sizes, thereby improving the practicability of the device.

[0024] In this embodiment, a temperature sensor 5 is provided inside the detection cabinet 7, and a fire extinguisher 16 is placed on the left side of the discharge detector 1 and the detection cabinet 7. The fire extinguisher 16 is a carbon dioxide fire extinguisher. The fire extinguisher 16 is fixed to one side of the discharge detector 1 and the detection cabinet 7 by two clamping rings 15 to avoid shaking during use. The air outlet end of the fire extinguisher 16 is connected to a jet pipe 14, and the end of the jet pipe 14 penetrates into the inside of the nozzle 12. The nozzle 12 is located inside the detection cabinet 7, and a control valve 13 is provided on the jet pipe 14. When in use, when the lithium battery inside the detection cabinet 7 burns during the discharge process, the temperature sensor 5 detects and sends an alarm signal to the control end, and the control end sends an opening signal to the control valve 13. The internal gas of the fire extinguisher 16 is ejected from the nozzle 12 through the jet pipe 14, covering the surface of the lithium battery to avoid the lithium battery from burning.

[0025] In this embodiment, a spring three 24 is installed at the bottom of the electrode head slot 2, and a contact piece 25 is fixedly installed on the spring three 24. The contact piece 25 is electrically connected to the discharge detector 1. During detection, the contact piece 25 contacts the lower electrode head 3 of the lithium battery 4; when detecting the lithium battery 4, first adjust the distance between the two electrode head slots 2 according to the distance between the two electrode heads 3, and then align the electrode head 3 with the slot of the electrode head slot 2 and place it into the electrode head slot 2, so that the electrode head 3 contacts the contact piece 25 inside the electrode head slot 2.

[0026] In this embodiment, two gaskets 17 are provided at the bottom of the detection cabinet 7, and the two gaskets 17 are located at the rear side of the electrode head slot 2. A sliding rod 171 is provided below the gasket 17, and the sliding rod 171 is slidably connected at the bottom of the detection cabinet 7. A spring 172 is sleeved on the surface of the sliding rod 171, which can be adjusted according to the length of the electrode head slot 2, so that the lithium battery 4 can be in a stable state.

[0027] In the embodiment of this city, a cover plate 10 is installed on the detection cabinet 7 by bolts, and fans 11 are arranged on both sides of the cover plate 10. The inside of the detection cabinet 7 can be heat-dissipated by the fans 11. Two telescopic rods 8 are slidably installed under the cover plate 10, and a pressure plate 6 is connected under the two telescopic rods 8. A spring 9 is sleeved on the telescopic rod 8. By setting the pressure plate 6, the telescopic rod 8 sliding inside the cover plate 10 and the spring 9 sleeved on the surface of the telescopic rod 8 can press the lithium battery 4 inside the detection cabinet 7 to avoid virtual connection during the detection process, which causes unstable detection data.

[0028] Working principle: When the discharge detection device for lithium batteries performs discharge detection on lithium batteries, firstly, the distance between the two electrode head slots 2 is adjusted according to the distance between the two electrode heads 3, and then the electrode head 3 is aligned with the slot of the electrode head slot 2 and placed into the electrode head slot 2, so that the electrode head 3 contacts the contact piece 25 inside the electrode head slot 2, and then the cover plate 10 is installed on the top of the detection cabinet 7, so that the bottom of the pressure plate 6 contacts the lithium battery 4, and the lithium battery 4 is pressed and clamped to ensure the stability of the detection, and the lithium battery 4 is discharged through the discharge detector 1; when the lithium battery inside the detection cabinet 7 burns during the discharge process, the temperature sensor 5 detects and sends an alarm signal to the control end, and the control end first turns off the two fans 11 on the top of the detection cabinet 7, and then sends an opening signal to the control valve 13, and the internal gas of the fire extinguisher 16 is sprayed out from the nozzle 12 through the jet pipe 14, covering the surface of the lithium battery to prevent the lithium battery from burning.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A discharge detection device for a lithium battery, characterized in that: The invention comprises a discharge detector (1) and a detection cabinet (7), wherein the discharge detector (1) is used to detect the discharge process of a lithium battery, the detection cabinet (7) is fixedly installed above the discharge detector (1), and the detection cabinet (7) is used to place the lithium battery to be detected, and an electrode head placement device is arranged at the bottom of the detection cabinet (7), wherein the electrode head placement device comprises two electrode head slots (2), wherein the electrode head slot (2) on the left side is fixedly installed at the bottom of the detection cabinet (7), and the electrode head slot (2) on the right side is slidably connected to the bottom of the detection cabinet (7), and a slide groove (21) is provided at the bottom of the detection cabinet (7), wherein a threaded rod (22) is rotatably connected inside the slide groove (21), and a slider (23) is rotatably connected to the threaded rod (22), and the slider (23) is slidably connected inside the slide groove (21), and the electrode head slot (2) on the right side is fixedly installed on the slider (23).

2. A discharge detection device for a lithium battery according to claim 1, characterized in that: A lithium battery (4) is placed inside the detection cabinet (7), and two electrode heads (3) are arranged on the lithium battery (4). The two electrode heads (3) can be placed inside the electrode head slot (2).

3. A discharge detection device for a lithium battery according to claim 1, characterized in that: A temperature sensor (5) is arranged inside the detection cabinet (7); a fire extinguisher (16) is placed on the left side of the discharge detector (1) and the detection cabinet (7); the fire extinguisher (16) is fixed to one side of the discharge detector (1) and the detection cabinet (7) through two clamping rings (15); an air outlet of the fire extinguisher (16) is connected to an injection pipe (14); the end of the injection pipe (14) extends deep into the interior of a nozzle (12); the nozzle (12) is located inside the detection cabinet (7); and a control valve (13) is arranged on the injection pipe (14).

4. A discharge detection device for a lithium battery according to claim 1, characterized in that: A spring three (24) is installed at the bottom of the electrode head slot (2), a contact piece (25) is fixedly installed on the spring three (24), and the contact piece (25) is electrically connected to the discharge detector (1).

5. A discharge detection device for a lithium battery according to claim 1, characterized in that: Two gaskets (17) are arranged at the bottom of the detection cabinet (7), and the two gaskets (17) are located at the rear side of the electrode head slot (2). A sliding rod (171) is arranged below the gasket (17), and the sliding rod (171) is slidably connected to the bottom of the detection cabinet (7), and a spring 2 (172) is sleeved on the surface of the sliding rod (171).

6. A discharge detection device for a lithium battery according to claim 1, characterized in that: A cover plate (10) is installed on the detection cabinet (7) by means of bolts, fans (11) are arranged on both sides of the cover plate (10), two telescopic rods (8) are slidably installed below the cover plate (10), a pressure plate (6) is connected below the two telescopic rods (8), and a spring (9) is sleeved on the telescopic rod (8).

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