A charging and discharging test signal acquisition device with anti-interference

Abstract

The utility model proposes a kind of with anti-interference's charge-discharge test signal acquisition device, it is related to battery charge-discharge test field, including device shell, the lateral wall welding of device shell is fixed with fixed frame, the upper surface of fixed frame is fixed with adjusting electric jar by screw, the telescopic end of adjusting electric jar is equipped with the protection mechanism for protection, the upper surface of device shell is equipped with the fixed mechanism for being used to fix battery.The utility model is equipped with protection mechanism, when the explosion of battery cell test occurs, the pressure expansion in the inside of protective shell, the pressure of expansion will be rapidly through connecting pipe and enter to storage box, and then push piston horizontal motion, piston movement can push fire extinguishing agent to install pipe, fire extinguishing agent is discharged to spray head through the gap between current-limiting plate and install pipe, spray head sprays fire extinguishing agent to the inside of protective shell, and then auxiliary fire extinguishing is carried out to battery cell, and then reduce the situation of fire, and good protection effect can be played.

Description

Technical Field

[0001] This utility model relates to the field of battery charge and discharge testing, specifically a charge and discharge test signal acquisition device with anti-interference capabilities. Background Technology

[0002] The charge / discharge test signal acquisition device is a precision instrument specifically designed for real-time monitoring and recording of key parameters during battery charging and discharging. Its core function is to acquire dynamic signals such as battery voltage, current, temperature, and internal resistance through high-precision sensors and anti-interference technology, providing reliable data support for battery performance evaluation, safety analysis, and R&D optimization. It tracks voltage changes in individual battery cells or modules in real time with an accuracy of ±0.01%FS (full scale) and supports millisecond-level sampling rates. It accurately captures charging and discharging current waveforms, supports bidirectional current detection (charging / discharging), and covers a range from milliamperes to kiloamperes.

[0003] Patent CN220357113U discloses a battery pack charge-discharge testing mechanism, which includes a conveyor belt, a test harness, and an adjustment assembly. The adjustment assembly includes a mounting plate, an adjustment seat, and a drive group. The conveyor belt is used to transport the battery pack to be tested, the test harness is used to perform charge-discharge tests on the battery pack, and the mounting plate is used to connect the adjustment seat to the drive group. It allows for fine-tuning of the test harness after adjustment by the drive group via the adjustment seat, making the position adjustment of the test harness more accurate and solving the problem that existing battery pack charge-discharge testing mechanisms cannot be applied to testing battery packs of different sizes.

[0004] Existing test acquisition devices can fine-tune the test harness after the drive group has been adjusted through the adjustment seat, so that the position adjustment of the test harness is more accurate. However, the battery is exposed to the outside during the test. If the battery explodes during the charge and discharge test, it will cause injury to the surrounding staff and damage the equipment. Utility Model Content

[0005] The purpose of this utility model is to provide a charge-discharge test signal acquisition device with anti-interference capabilities, so as to solve the problems mentioned in the background art and overcome its technical defects.

[0006] To solve the above technical problems, the technical solution adopted by this utility model is: a charging and discharging test signal acquisition device with anti-interference, including a device shell, a fixing frame welded to the side wall of the device shell, an adjusting electric cylinder fixed to the upper surface of the fixing frame by screws, a protective mechanism for protection at the telescopic end of the adjusting electric cylinder, and a fixing mechanism for fixing the battery on the upper surface of the device shell. The protective mechanism includes a protective shell, which is fixed to the telescopic end of the adjusting electric cylinder. A shielding inner shell is integrally fixed to the inner surface of the protective shell. A connecting pipe is connected to the upper surface of the protective shell, and the end of the connecting pipe is connected to a storage box fixed to the protective shell.

[0007] As a further improvement of this utility model: a piston is slidably connected inside the storage box, and an installation pipe is connected to the left side of the storage box through a pipeline.

[0008] As a further improvement of this utility model: a fixing plate is fixed inside the mounting tube, and two movable rods pass through the inside of the fixing plate.

[0009] As a further improvement of this utility model: the outer surfaces of the two movable rods are each fitted with a spring that abuts against the upper surface of the fixed plate, and the lower surfaces of the two movable rods are each fixed with a flow-limiting plate.

[0010] As a further improvement of this utility model, the lower surface of the mounting pipe is connected to a nozzle fixed to the inner wall of the protective shell via a pipe.

[0011] As a further embodiment of this utility model: the fixing mechanism includes a placement seat, which is fixed to the upper surface of the device housing. The upper surface of the placement seat is provided with three sets of limiting members, and a limiting groove is formed at the upper end of the placement seat.

[0012] As a further improvement of this utility model: a fixed probe is fixed on one side of the interior of each of the three sets of limiting members, and a movable probe is installed on the other side of the interior of the three sets of limiting members.

[0013] As a further improvement of this utility model: a connecting rod that penetrates the outer wall of the limiting member is fixed on one side of the movable probe, and a tension spring is sleeved on the outer surface of the connecting rod.

[0014] Compared with the prior art, the beneficial effects of this utility model include: The protective mechanism ensures that when a cell explosion occurs during testing, the pressure inside the protective casing expands. This expanded pressure quickly passes through the connecting pipe into the storage tank, which in turn pushes the piston to move horizontally. As the piston moves, it pushes the extinguishing agent into the installation pipe. The extinguishing agent then passes through the gap between the flow restrictor and the installation pipe and is discharged into the nozzle. The nozzle sprays the extinguishing agent into the protective casing, thus assisting in extinguishing the fire in the cell and reducing the likelihood of a fire. This also provides good protection.

[0015] By manually pulling the connecting rod horizontally through the fixed mechanism, the connecting rod moves the movable probe at its end away from the fixed probe, allowing the battery cell to be properly placed into the limiting component. Releasing the connecting rod will cause it to reset under the tension of the spring, which in turn pushes the movable probe closer to the fixed probe, clamping and limiting the battery cell. Attached Figure Description

[0016] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein: Figure 1 The schematic diagram shows a three-dimensional structural diagram according to one embodiment of the present invention; Figure 2 The schematic diagram shows a cross-sectional view of the protective shell structure according to one embodiment of the present invention; Figure 3 The schematic diagram shows a cross-sectional view of the mounting tube according to one embodiment of the present invention. Figure 4 The schematic diagram shows a three-dimensional structure of the placement base according to one embodiment of the present invention; Figure 5 The schematic diagram shows a cross-sectional view of the placement seat according to one embodiment of the present invention; The following are the labeling elements in the diagram: 1. Device outer shell; 2. Fixing frame; 3. Adjusting electric cylinder; 4. Protective shell; 41. Shielding inner shell; 42. Connecting pipe; 43. Storage box; 44. Piston; 45. Mounting pipe; 46. Fixing plate; 47. Movable rod; 48. Spring; 49. Flow limiting plate; 5. Nozzle; 6. Placement seat; 61. Limiting component; 62. Fixed probe; 63. Movable probe; 64. Connecting rod; 65. Tension spring; 66. Limiting groove. Detailed Implementation

[0017] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0018] An embodiment of the present invention is shown in conjunction with the accompanying drawings.

[0019] Please see Figures 1 to 4An anti-interference charge and discharge test signal acquisition device includes a device housing 1, a fixing frame 2 welded and fixed to the side wall of the device housing 1, an adjusting electric cylinder 3 fixed to the upper surface of the fixing frame 2 by screws, a protective mechanism for protection at the telescopic end of the adjusting electric cylinder 3, and a fixing mechanism for fixing the battery on the upper surface of the device housing 1. The protective mechanism includes a protective shell 4, which is fixed to the telescopic end of the adjusting electric cylinder 3. A shielding inner shell 41 is integrally fixed to the inner surface of the protective shell 4. A connecting pipe 42 is connected to the upper surface of the protective shell 4. The end of the connecting pipe 42 is connected to a storage box 43 fixed to the protective shell 4. A piston 44 is slidably connected inside the storage box 43. An installation pipe 45 is connected to the left side of the storage box 43 through a pipe. A fixing plate 46 is fixed inside the installation pipe 45. Two movable rods 47 pass through the inside of the fixing plate 46. A spring 48 is fitted on the outer surface of each of the two movable rods 47 and abuts against the upper surface of the fixing plate 46. A flow limiting plate 49 is fixed to the lower surface of each of the two movable rods 47. A nozzle 5 fixed to the inner wall of the protective shell 4 is connected to the lower surface of the installation pipe 45 through a pipe.

[0020] By adopting the above technical solution, the device is placed in a suitable position using the handle on the outer casing 1. Before testing, the adjusting electric cylinder 3 on the fixing frame 2 drives the protective shell 4 to move vertically, so that the lower end of the protective shell 4 is inserted into the limiting groove 66, thereby protecting the battery cell. The shielding inner shell 41 set on the inner wall of the protective shell 4 can play a shielding role, thereby reducing the influence of external signals on the acquisition effect and improving practicality. When a cell explosion occurs during testing, the pressure inside the protective casing 4 expands. This expansion pressure quickly flows through the connecting pipe 42 into the storage tank 43, which in turn pushes the piston 44 to move horizontally. The storage tank 43 contains extinguishing agent, which is pushed out of the mounting pipe 45 by the piston 44. This extinguishing agent then pushes the flow-limiting plate 49 through the through hole on the fixing plate 46, causing the flow-limiting plate 49 to separate from the lower surface of the fixing plate 46. At this time, the extinguishing agent is discharged through the gap between the flow-limiting plate 49 and the mounting pipe 45 to the nozzle 5. The nozzle 5 sprays the extinguishing agent into the protective casing 4, thereby assisting in extinguishing the fire in the cell and reducing the possibility of a fire, providing good protection. After the pressure inside the protective casing 4 decreases, the spring 48 pushes the movable rod 47 to reset, which in turn causes the flow-limiting plate 49 to reset, preventing gas from entering the mounting pipe 45 from the protective casing 4, facilitating future use.

[0021] Specifically, such as Figure 1 , Figure 4 and Figure 5As shown, the fixing mechanism includes a placement seat 6, which is fixed to the upper surface of the device housing 1. The upper surface of the placement seat 6 is provided with three sets of limiting members 61. A limiting groove 66 is opened at the upper end of the placement seat 6. A fixed probe 62 is fixed on one side of the interior of each of the three sets of limiting members 61. A movable probe 63 is installed on the other side of the interior of the three sets of limiting members 61. A connecting rod 64 that penetrates the outer wall of the limiting member 61 is fixed on one side of the movable probe 63. A tension spring 65 is sleeved on the outer surface of the connecting rod 64.

[0022] By adopting the above technical solution, the battery cell to be tested for charge / discharge can be placed into the limiting member 61 set on the placement seat 6. Before placing the battery cell, manually pull the connecting rod 64 horizontally so that the connecting rod 64 moves the movable probe 63 at its end away from the fixed probe 62. At this time, the battery cell can be normally placed into the limiting member 61. Then, release the connecting rod 64. Under the action of the tension spring 65, the connecting rod 64 will be reset, thereby pushing the movable probe 63 closer to the fixed probe 62 to clamp and limit the battery cell. The movable probe 63 and the fixed probe 62 are connected to the acquisition device through wires. During the test, the movable probe 63 and the fixed probe 62 convert the physical quantities of the battery such as voltage, current, and temperature into electrical signals. Through amplification, filtering, isolation and other circuits to eliminate noise and adapt to subsequent processing requirements, the analog signals are converted into digital signals for processing by the microcontroller MCU. The processed data is uploaded to the host computer or storage device through the communication interface.

[0023] Working principle: Place the battery cell to be tested into the limiting component 61. First, manually pull the connecting rod 64 horizontally, causing the movable probe 63 at the end of the connecting rod 64 to move away from the fixed probe 62. At this time, the battery cell can be normally placed into the limiting component 61. Release the connecting rod 64. Under the tension of the tension spring 65, the connecting rod 64 will be reset, pushing the movable probe 63 closer to the fixed probe 62, clamping and limiting the battery cell. The movable probe 63 and the fixed probe 62 are connected to the acquisition device through wires. Before testing, the adjusting cylinder 3 on the fixing frame 2 drives the protective shell 4 to move vertically, so that the lower end of the protective shell 4 is inserted into the limiting groove 66, thereby protecting the battery cell. The shielding inner shell 41 set on the inner wall of the protective shell 4 can play a shielding role, thereby reducing the influence of external signals on the acquisition effect and improving practicality. When a cell explosion occurs during testing, the pressure inside the protective casing 4 expands. This expanded pressure quickly flows through the connecting pipe 42 into the storage tank 43, which in turn pushes the piston 44 to move horizontally. The storage tank 43 contains extinguishing agent, which is pushed out by the piston 44 into the mounting pipe 45. This extinguishing agent then pushes the flow-limiting plate 49 through the through-hole on the fixing plate 46, causing the flow-limiting plate 49 to separate from the lower surface of the fixing plate 46. At this time, the extinguishing agent is discharged through the gap between the flow-limiting plate 49 and the mounting pipe 45 into the nozzle 5. The nozzle 5 sprays the extinguishing agent into the protective casing 4, thereby assisting in extinguishing the fire in the cell and reducing the possibility of a fire, thus providing good protection. After the pressure inside the protective casing 4 decreases, the spring 48 pushes the movable rod 47 to reset, which in turn causes the flow-limiting plate 49 to reset.

[0024] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A charge / discharge test signal acquisition device with anti-interference capabilities, characterized in that, The device includes a housing (1), a fixing frame (2) is welded and fixed to the side wall of the housing (1), an adjusting electric cylinder (3) is fixed to the upper surface of the fixing frame (2) by screws, the telescopic end of the adjusting electric cylinder (3) is provided with a protective mechanism for protection, and the upper surface of the housing (1) is provided with a fixing mechanism for fixing the battery. The protective mechanism includes a protective shell (4), which is fixed to the telescopic end of the adjusting electric cylinder (3). A shielding inner shell (41) is integrally fixed on the inner surface of the protective shell (4). A connecting pipe (42) is connected to the upper surface of the protective shell (4), and a storage box (43) fixed on the protective shell (4) is connected to the end of the connecting pipe (42).

2. The charge / discharge test signal acquisition device with anti-interference capability according to claim 1, characterized in that, The storage box (43) is slidably connected to a piston (44), and the left side of the storage box (43) is connected to an installation pipe (45) via a pipe.

3. The charge / discharge test signal acquisition device with anti-interference capability according to claim 2, characterized in that, The mounting tube (45) has a fixing plate (46) inside, and two movable rods (47) pass through the inside of the fixing plate (46).

4. The charge / discharge test signal acquisition device with anti-interference capability according to claim 3, characterized in that, The outer surfaces of the two movable rods (47) are fitted with springs (48) that abut against the upper surface of the fixed plate (46), and the lower surfaces of the two movable rods (47) are fixed with flow limiting plates (49).

5. The charge / discharge test signal acquisition device with anti-interference capability according to claim 4, characterized in that, The lower surface of the mounting pipe (45) is connected to a nozzle (5) fixed to the inner wall of the protective shell (4) via a pipe.

6. The charge / discharge test signal acquisition device with anti-interference capability according to claim 5, characterized in that, The fixing mechanism includes a placement seat (6), which is fixed to the upper surface of the device housing (1). The upper surface of the placement seat (6) is provided with three sets of limiting members (61), and the upper end of the placement seat (6) is provided with a limiting groove (66).

7. The charge / discharge test signal acquisition device with anti-interference capability according to claim 6, characterized in that, A fixed probe (62) is fixed on one side inside each of the three sets of limiting members (61), and a movable probe (63) is installed on the other side inside the three sets of limiting members (61).

8. The charge / discharge test signal acquisition device with anti-interference capability according to claim 7, characterized in that, A connecting rod (64) that penetrates the outer wall of the limiting member (61) is fixed on one side of the movable probe (63), and a tension spring (65) is sleeved on the outer surface of the connecting rod (64).

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