Charging and discharging detection device for battery pack of new energy automobile

Abstract

The invention discloses a new energy automobile battery pack charging and discharging detection device, and relates to the technical field of battery pack charging and discharging detection, the new energy automobile battery pack charging and discharging detection device comprises a detection machine and two connectors, the two connectors are installed on the detection machine, the detection machine is provided with a flat insertion protection assembly, and the flat insertion protection assembly comprises two sliding rails. The two sliding rails are symmetrically and fixedly connected to the two sides of the detection machine, and a U-shaped connecting rod is connected between the two sliding rails in a sliding mode. The plug I is horizontally inserted into the connector, so that angular deviation in the insertion process can be avoided, the connector and the plug I are subjected to uniform axial force, extra wear caused by non-uniform friction and lateral extrusion generated during inclined insertion is effectively avoided, and the accuracy of parameters such as voltage and current detected by a detector is ensured; the transmission stability of detection data is ensured, and the situation that repeated plugging is needed due to inaccurate alignment caused by manual plugging can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of battery pack charge and discharge detection, and in particular to a new energy vehicle battery pack charge and discharge detection device. Background Art

[0002] The performance of new energy vehicle battery packs is directly related to the power and endurance of the vehicle. The actual capacity and power output of the battery pack can be accurately determined through charge and discharge testing to ensure that it can meet the power requirements of the vehicle during driving and achieve the nominal endurance mileage. The battery pack charging and discharging integrated machine used in the prior art integrates the charging and discharging functions into one device, which is convenient for users to operate. It can simultaneously measure and monitor multiple parameters such as voltage, current, temperature, etc., and can also simulate different charging and discharging conditions, such as constant current charging, constant voltage charging, constant current discharging, dynamic condition discharging, etc. The integration of these functions enables rich battery pack performance data to be obtained in one test, effectively improving the detection efficiency.

[0003] However, in the actual use of the battery pack charging and discharging machine, it is necessary to use positive and negative wires to connect the battery and the battery pack charging and discharging machine. Due to the messy layout of the equipment and connecting wires, there may be visual blind spots. At the same time, the messy lines will limit the operator's hand movement space. When inserting the plug, the operator cannot clearly see the exact position of the interface and can only operate by feel, which can easily lead to tilted insertion.

[0004] At the same time, in actual testing and usage scenarios, the battery pack charging and discharging machine needs to frequently connect and disconnect with different battery packs. This high-frequency plugging and unplugging will cause wear between the pins of the plug and the jacks of the socket.

[0005] If there is an angle deviation during plugging and unplugging, the wear will be aggravated. The angle deviation will cause one side of the interface to bear excessive pressure, which may easily cause the interface pins to deform, break, or the interface shell to crack, making the measured voltage, current and other parameters inaccurate, resulting in interruption or errors in the transmission of detection data, thereby affecting the accuracy of the entire battery charging and discharging detection process.

[0006] Therefore, based on the above-mentioned defects in the prior art, a new energy vehicle battery pack charge and discharge detection device is proposed. Summary of the invention

[0007] The purpose of the present invention is to provide a new energy vehicle battery pack charge and discharge detection device to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a new energy vehicle battery pack charge and discharge detection device, comprising a detection machine and two connectors, the two connectors are installed on the detection machine, and a flat plug protection component is arranged on the detection machine, the flat plug protection component comprises two slide rails, the two slide rails are symmetrically fixedly connected on both sides of the detection machine, a U-shaped connecting rod is slidably connected between the two slide rails, a telescopic tube is fixedly connected on one side of the middle part of the U-shaped connecting rod close to the detection machine, the end of the telescopic tube close to the U-shaped connecting rod is a fixed end, the end of the telescopic tube away from the U-shaped connecting rod is a telescopic end, the telescopic end of the telescopic tube is fixedly connected with a cross plate, a spring is fixedly connected between the cross plate and the U-shaped connecting rod, and two pull plates are symmetrically fixedly connected to one end of the telescopic end of the telescopic tube close to the U-shaped connecting rod, two plugs are symmetrically installed on one side of the cross plate away from the telescopic tube, and a connecting wire is fixedly connected to each of the two plugs on one side close to the cross plate, and a protective shell is fixedly connected to the middle of the top surface of the detection machine.

[0009] Furthermore, the detection machine is symmetrically provided with two wire-taking stabilizing components, the wire-taking stabilizing components comprising a wire reel, the wire reel being fixedly connected to a U-shaped connecting rod, the wire reel being arranged as a cavity structure, the middle portion of the wire reel being rotatably connected to a wire-taking shaft, the top of the wire reel being provided with a wire-releasing hole, one end of the connecting wire passing through the wire-releasing hole being provided with a plug 2, the top of the wire reel being symmetrically provided with a bunching groove on both sides, the inside of each of the two bunching grooves being slidably connected with a rubber slider, the two rubber sliders passing through the side of the bunching groove being fixedly connected with a limit plate, the end of the wire-reel shaft passing through the wire reel being fixedly connected with a gear, A clockwork spring is fixedly connected between the gear and the winding reel, and a rack is slidably connected to one side of the winding reel close to the gear and located at the bottom of the gear. Four sliding rods are symmetrically slidably connected to both sides of the rack, and two of the sliding rods on the same side are fixedly connected to a single tooth block at one end away from the rack, and a spring is sleeved on the surface of each of the four sliding rods; a rotating shaft is fixedly connected to one side of the winding reel close to the gear, and a trigger rod is rotatably connected to the end of the rotating shaft away from the winding reel, and a torsion spring is sleeved on the surface of the rotating shaft, a push rod is fixedly connected to one end of the rack close to the trigger rod, and a limited block is fixedly connected to one end of the cross plate close to the winding reel.

[0010] Furthermore, the spring 1 is arranged in the cavity of the telescopic tube, the two plugs 1 are respectively located on the moving path of the plug 1 on the same side, and the two plugs 1 are plug-fitted with the connector on the same side.

[0011] Furthermore, the top end of the slide rail is set as the sliding starting point of the U-shaped connecting rod, the top end of the slide rail and the protective shell are on the same vertical plane, the bottom end of the slide rail is set as the sliding end point of the U-shaped connecting rod, and the bottom end of the slide rail and the two connectors are on the same horizontal plane.

[0012] Furthermore, the protective shell includes a horizontal bottom plate and two hollow tubes with top openings, the two hollow tubes are respectively located on the moving path of the plug 1 on the same side, and the two hollow tubes are respectively plugged and adapted with the plug 1 on the same side.

[0013] Furthermore, the take-up shaft is hollow, and one end of the connecting wire connected to plug one passes through the take-up shaft, the connecting wire is fixedly connected to the take-up shaft, the part of the connecting wire located inside the winding reel is spirally wound around the outer wall of the take-up shaft, and the end of the connecting wire connected to plug two passes through the wire release hole and out of the winding reel.

[0014] Furthermore, the mainspring is sleeved on the take-up shaft, and the two ends of the four springs are respectively fixedly connected to the rack and the single tooth block on the same side.

[0015] Furthermore, two ends of the torsion spring are fixedly connected to the cable reel and the trigger rod respectively.

[0016] Furthermore, the rack and the gear are meshed with each other, and the single tooth of the single tooth block and the rack are the same in shape and size.

[0017] Furthermore, the ends of the push rod and the trigger rod that are close to each other are arranged as complementary inclined surfaces, and the trigger rod is arranged in an L shape.

[0018] Compared with the prior art, the present invention has the following beneficial effects: By inserting the plug 1 horizontally into the connector, angle deviation can be avoided during the insertion process, making the axial force on the connector and the plug 1 more uniform, effectively avoiding the extra wear caused by uneven friction and lateral extrusion during tilted insertion, ensuring the accuracy of parameters such as voltage and current detected by the detection machine, ensuring the transmission stability of the detection data, and avoiding the situation where manual plugging is prone to misalignment and requires repeated plugging; When the detector is not in use, the two plugs 1 are respectively plugged into the hollow tubes of the protective shell on the same side. The hollow tubes wrap and protect the plugs 1, so that the plugs 1 do not come into direct contact with the external environment, providing physical protection for the plugs 1 and ensuring that the performance of the plugs 1 will not be affected by the external environment, such as dust, water vapor, physical impact, etc. when not in use; The length of a section of the connecting wire extending from the inside of the winding drum is fixed, while the rest of the connecting wire is still stored inside the winding drum, which can effectively prevent the connecting wire from being scattered in the battery detection environment, causing the messy connecting wire to affect the operator. At the same time, it can prevent the plug from being loosened due to the connecting wire's own gravity or external force when the connecting wire is scattered, reducing the possibility of interrupting the detection due to accidental pulling, ensuring the continuity of the battery charging and discharging detection work, thereby ensuring the authenticity and reliability of the battery charging and discharging detection data; By rotating the take-up shaft, the connecting wire is quickly reeled into the reel, which can prevent the performance of the connecting wire from changing due to long-term exposure or improper placement, making the measured voltage, current and other parameters more stable and accurate during battery charge and discharge testing. At the same time, when the connecting wires are placed in a messy manner, they may cross and entangle with each other, which is susceptible to electromagnetic interference. The fully stored connecting wires are arranged relatively neatly in the reel, which can reduce the impact of electromagnetic interference, which helps to ensure the accuracy of signal transmission, thereby obtaining battery status information more accurately; By inserting the limit block and the trigger rod to limit the connection between plug one and the connector, plug one can be effectively prevented from loosening from inside the connector due to vibration, external pulling or its own gravity. This limit can ensure that plug one maintains a firm connection in the connector and ensures a good electrical connection between the detection machine and the battery, thereby ensuring stable transmission of current and voltage during the charge and discharge detection process, which helps to improve the reliability of the detection results and avoid inaccurate battery charge and discharge detection data due to poor contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the overall device of the present invention; Figure 2 This is a schematic diagram of the positions of the slide rail, U-shaped connecting rod, and protective shell of the present invention; Figure 3 It is a transverse cross-sectional schematic diagram of the flat-insertion protection assembly of the present invention; Figure 4 For the present invention Figure 3 The enlarged schematic diagram at A in the middle; Figure 5 It is a vertical cross-sectional schematic diagram of the wire-taking and stabilizing assembly of the present invention; Figure 6 For the present invention Figure 5 The enlarged schematic diagram of point B in the middle; Figure 7 This is a detailed schematic diagram of the wire-taking and stabilizing assembly of the present invention; Figure 8 For the present invention Figure 7 The enlarged schematic diagram at C in the middle; Fig. 9 For the present invention Figure 7 The enlarged schematic diagram at D in the middle; Fig.10 For the present invention Figure 2 Enlarged schematic diagram at point E in the middle.

[0020] In the figure: 11. Detection machine; 12. Connector; 21. Slide rail; 22. U-shaped connecting rod; 23. Telescopic tube; 24. Horizontal plate; 25. Spring 1; 26. Pull plate; 27. Plug 1; 28. Connecting wire; 29. ​​Protective shell; 31. Cable reel; 32. Take-up shaft; 33. Pay-off hole; 34. Plug 2; 35. Take-up slot; 36. Rubber slider; 37. Limit plate; 38. Gear; 39. Clockwork spring; 310. Rack; 311. Slide bar; 312. Single tooth block; 313. Spring 2; 314. Rotating shaft; 315. Trigger rod; 316. Torsion spring; 317. Push rod; 318. Limit block. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Embodiments provided by the present invention: Example 1: Please refer to Figures 1 to 4 As shown, a new energy vehicle battery pack charge and discharge detection device includes a detection machine 11 and two connectors 12, and the two connectors 12 are installed on the detection machine 11.

[0023] Wherein: the two connectors 12 represent the positive and negative poles of the detection machine 11 respectively.

[0024] The detection machine 11 is provided with a flat plug protection component for stabilizing the line connection, and the flat plug protection component includes two slide rails 21, and the two slide rails 21 are symmetrically fixedly connected to the two sides of the detection machine 11, and a U-shaped connecting rod 22 is slidably connected between the two slide rails 21. A telescopic tube 23 is fixedly connected to the side of the middle part of the U-shaped connecting rod 22 close to the detection machine 11, and the end of the telescopic tube 23 close to the U-shaped connecting rod 22 is the fixed end, and the end of the telescopic tube 23 away from the U-shaped connecting rod 22 is the telescopic end. The telescopic end of the telescopic tube 23 is fixedly connected to a cross plate 24, and a spring 25 is fixedly connected between the cross plate 24 and the U-shaped connecting rod 22. The spring 25 is fixedly connected to the cross plate 24 and the U-shaped connecting rod 22. 25 is arranged in the cavity of the telescopic tube 23, and the telescopic end of the telescopic tube 23 is symmetrically fixedly connected to one end of the U-shaped connecting rod 22 with two pull plates 26, and the side of the horizontal plate 24 away from the telescopic tube 23 is symmetrically installed with two plugs 27, and the two connectors 12 are respectively located on the moving path of the plugs 27 on the same side, that is, the plugs 27 can be plugged into the connectors 12 along the track of the slide rail 21, and the two plugs 27 are plugged and adapted with the connectors 12 on the same side, and the two plugs 27 pass through the horizontal plate 24 on one side close to the horizontal plate 24, and are fixedly connected to a connecting line 28, and a protective shell 29 is fixedly connected to the middle of the top surface of the detection machine 11.

[0025] Among them: the top end of the slide rail 21 is set as the sliding starting point of the U-shaped connecting rod 22, the top end of the slide rail 21 and the protective shell 29 are on the same vertical plane, the bottom end of the slide rail 21 is set as the sliding end point of the U-shaped connecting rod 22, and the bottom end of the slide rail 21 and the two connectors 12 are on the same horizontal plane.

[0026] Wherein: the protective shell 29 includes a horizontal bottom plate and two hollow tubes with top openings, the two hollow tubes are respectively located on the moving path of the plug 1 27 on the same side, and the two hollow tubes are respectively plugged and adapted with the plug 1 27 on the same side.

[0027] Among them: the U-shaped connecting rod 22, the cross plate 24 and the two plugs 27 are all on the same horizontal plane.

[0028] Among them: in the initial state, that is, when the detection machine 11 is not in use, the two plugs 27 are respectively inserted into the hollow tubes of the protective shell 29 on the same side, and the U-shaped connecting rod 22 is located at the sliding starting point of the slide rail 21. The U-shaped connecting rod 22 is vertically upward compared to the top surface of the detection machine 11.

[0029] When the flat-insertion protection assembly is used, the user holds the middle part of the U-shaped connecting rod 22 and pulls the two pull plates 26 in the direction away from the detection machine 11. As the two pull plates 26 are pulled, the telescopic tube 23 gradually contracts, so that the telescopic end of the telescopic tube 23 drives the cross plate 24 to move synchronously in the direction away from the detection machine 11. At the same time, the spring 1 25 is elastically compressed. When the cross plate 24 moves, the cross plate 24 drives the two plugs 1 27 to be pulled out from the hollow tube of the corresponding protective shell 29. At this time, the user keeps pulling the two pull plates 26 and pulls the U-shaped connecting rod 22 in the direction of the two connectors 12, so that the U-shaped connecting rod 22 moves along the slide rail 21. The two plugs 27 are then pushed in the same direction until the U-shaped connecting rod 22 slides to the sliding end point at the bottom of the slide rail 21. At this time, the bottom end of the slide rail 21 is in the same horizontal plane with the two connectors 12, and the two plugs 27 are also in the same horizontal plane with the connectors 12 on the same side. Then, the user no longer pulls the two pull plates 26. Under the elastic stretching action of the spring 25, the telescopic end of the telescopic tube 23 extends toward the connector 12, so that the cross plate 24 pushes the two plugs 27 to move toward the connector 12 on the same side, until the two plugs 27 are respectively inserted into the connector 12 on the same side. In summary, at this time, the plug 27 is inserted into the connector 12 horizontally.

[0030] In the above process, by horizontally inserting the plug 27 into the connector 12, it is possible to avoid angular deviation during the insertion process, so that the axial force exerted on the connector 12 and the plug 27 is greater, effectively avoiding the extra wear caused by uneven friction and lateral extrusion during tilted insertion, ensuring the accuracy of parameters such as voltage and current detected by the detection machine 11, ensuring the stability of the transmission of the detection data, and avoiding the situation where manual plugging is prone to misalignment and requires repeated plugging.

[0031] At the same time, when the detection machine 11 is not in use, the two plugs 27 are respectively inserted into the hollow tubes of the protective shell 29 on the same side. The hollow tube wraps and protects the plug 27, so that the plug 27 does not have direct contact with the external environment, and can provide physical protection for the plug 27 to ensure that the performance of the plug 27 will not be affected by the external environment, such as dust, water vapor, physical impact, etc. when it is not in use.

[0032] Embodiment 2: The existing detection machine 11 is not equipped with wire gathering or wiring management components when detecting the charge and discharge of new energy batteries. In the absence of a wire gathering device such as a wire gathering ring, a wire trough, etc., when multiple lines are connected, these lines can only droop naturally or be placed randomly, thus becoming messy and it is easy for the lines to cross and entangle with each other. At the same time, in actual use, the lines are prone to generate a pulling force on the plug 27 under their own gravity or when pulled by external force, which will cause the interruption of signal transmission between the detection machine 11 and the battery or introduce interference, which will make the detection machine 11 unable to accurately obtain the battery status information, thereby affecting the detection of the battery charging and discharging performance.

[0033] See also Figures 5 to 9 As shown, in summary, two wire-taking stabilizing components for arranging two connecting wires 28 and strengthening the connection stability of two plugs 27 with the connector 12 on the same side are symmetrically arranged on the detection machine 11, and the wire-taking stabilizing component comprises a wire reel 31, and the wire reel 31 is fixedly connected to the U-shaped connecting rod 22, and the wire reel 31 is arranged to have a cavity structure, and the middle part of the wire reel 31 is rotatably connected with a wire-taking shaft 32, and a wire-releasing hole 33 is provided on the top of the wire reel 31, and a plug 2 34 is installed on one end of the connecting wire 28 passing through the wire-releasing hole 33, and a bunching groove 35 is symmetrically provided on both sides of the top of the wire reel 31, and a rubber slider 36 is slidably connected to the inside of the two bunching grooves 35, and a limiting plate 37 is fixedly connected to one side of the two rubber sliders 36 passing through the bunching grooves 35, and a gear 38 is fixedly connected to one end of the wire-taking shaft 32 passing through the wire reel 31, and a spring 39 is fixedly connected between the gear 38 and the wire reel 31, and the spring 39 is sleeved on the wire-reel The cam 314 is provided on the rear of the drive shaft 32 and the rear end of the drive shaft 32 is provided with a spring 316. The cam 314 is provided on the rear of the drive shaft 32 and the rear end of the drive shaft 32 is provided with a spring 317. The cam 314 is provided on the rear of the drive shaft 32 and the rear end of the drive shaft 32 is provided with a spring 318.

[0034] Among them: the take-up shaft 32 is hollow, the end of the connecting wire 28 connected to the plug 1 27 passes through the take-up shaft 32, the connecting wire 28 is fixedly connected to the take-up shaft 32, the part of the connecting wire 28 located inside the winding drum 31 is spirally wound on the outer wall of the take-up shaft 32, and the end of the connecting wire 28 connected to the plug 2 34 passes through the winding drum 31 through the wire release hole 33.

[0035] Among them: the connection and adaptation between the plug 2 34 and the new energy battery to be tested is not shown in the attached figure.

[0036] Among them: Reference Figure 8 As shown, the converging groove 35 is set to be a triangle shape with a small end close to the wire-releasing hole 33 and a large end away from the wire-releasing hole 33, and the top lower surface of the limiting plate 37 is in contact with the outer wall of the winding drum 31.

[0037] The rack 310 and the gear 38 are meshed with each other, and the single tooth block 312 has the same shape and size as a single tooth of the rack 310 .

[0038] The ends of the push rod 317 and the trigger rod 315 that are close to each other are arranged as complementary inclined surfaces, and the trigger rod 315 is arranged in an L shape, that is, the end of the trigger rod 315 that is away from the push rod 317 is vertically downward, and this end is hereinafter referred to as the plug-in end.

[0039] The end of the limit block 318 away from the horizontal plate 24 is set as a slot that is plugged into and adapted to the plug-in end of the trigger rod 315 , and the end of the limit block 318 away from the horizontal plate 24 is located on the moving path of the plug-in end of the trigger rod 315 .

[0040] Among them: a part of the connecting wire 28 located outside the winding drum 31 and connected to the plug 27 is provided with a redundant length, and the length is used to prevent the connecting wire 28 of this part from being excessively curled and damaged when the take-up shaft 32 rotates.

[0041] When the wire-receiving and stabilizing assembly is in use, when the plug 1 27 is inserted into the connector 12, the U-shaped connecting rod 22 is horizontally facing the connector 12 compared to the top surface of the detector 11, and the rubber slider 36 is at the end of the wire-receiving hole 33 in the bundle groove 35, that is, the user needs to connect the plug 2 34 to the battery at this time, so as to establish the connection relationship between the battery and the detector 11, as follows: When the user pulls the plug 34 in the direction away from the detection machine 11, that is, in the direction of the battery, the user then pulls the plug 34 to connect the plug 34 to the battery. After completion, the limit plate 37 is pulled in the direction of the wire-releasing hole 33. During the movement of the limit plate 37, the rubber slider 36 is driven to slide synchronously inside the gathering groove 35. During this process, the rubber slider 36 slides following the gathering groove 35 and is gradually squeezed and deformed by the shape of the inner wall of the gathering groove 35. When the limit plate 37 moves to the position of the wire-releasing hole 33, that is, the rubber slider 36 slides inside the gathering groove 35 to the end of the gathering groove 35 close to the wire-releasing hole 33, the user no longer pulls the limit plate 37. At this time, the rubber slider 36 is squeezed and deformed inside the gathering groove 35, and the rubber slider 36 is elastically stretched and its own friction force is used to squeeze the rubber slider 36. The position of the slider 36 inside the convergence groove 35 is fixed, and the position of the limit plate 37 is also fixed at this time. At this time, the limit plate 37 squeezes the outer surface of the connecting wire 28, so that the connecting wire 28 is fixed in position by the limit plate 37, and then the length of a section of the connecting wire 28 extending out of the winding drum 31 is fixed, and the rest of the length is still stored in the winding drum 31, which can effectively prevent the connecting wire 28 from being scattered in the battery detection environment, causing the messy connecting wire 28 to affect the operator, and at the same time avoid the loosening of the plug 27 caused by the connecting wire 28's own gravity or external force when the connecting wire 28 is scattered, thereby reducing the possibility of interrupting the detection due to accidental pulling, ensuring the continuity of the battery charging and discharging detection work, thereby ensuring the authenticity and reliability of the battery charging and discharging detection data.

[0042] When the plug 2 34 is pulled to pull the connecting wire 28 out of the wire pay-off hole 33 and out of the wire reel 31, the connecting wire 28 will also drive the wire take-up shaft 32 to rotate, causing the clockwork spring 39 to elastically deform. When it is no longer necessary to detect the battery charge and discharge, the user pushes the rubber slider 36 away from the wire pay-off hole 33 so that the limit plate 37 no longer limits the connecting wire 28. At this time, under the action of the elastic reset of the clockwork spring 39, the wire take-up shaft 32 rotates in the opposite direction, driving the connecting wire 28 to re-reel and be reeled into the wire reel 31. When the plug 2 34 contacts the position of the wire reel 31 at the wire pay-off hole 33, the wire take-up shaft 32 no longer rotates, and the connecting wire 28 is completely received into the wire reel 31.

[0043] At the same time, during the rotation of the take-up shaft 32, the connecting wire 28 near one end of the plug 27 is driven by the take-up shaft 32 to rotate together, but because the connecting wire 28 is usually covered with rubber, it has a certain curling and deformation ability, and this part has redundant length. At the same time, the plug 27 is fixed to the cross plate 24, and then the connecting wire 28 will curl and deform at this time, but it will not cause damage to the connecting wire 28, and will not affect the connection between the plug 27 and the connector 12.

[0044] In the above process, the connection line 28 is quickly wound into the winding drum 31 by rotating the winding shaft 32, which can prevent the performance of the connection line 28 from changing due to long-term exposure or improper placement, so that when performing battery charge and discharge detection, the measured voltage, current and other parameters are more stable and accurate. At the same time, when the connection lines 28 are placed in a disorderly manner, they may cross and entangle with each other and be easily affected by electromagnetic interference. The fully stored connection lines 28 are arranged relatively neatly in the winding drum 31, which can reduce the influence of electromagnetic interference, which helps to ensure the accuracy of signal transmission, thereby obtaining battery status information more accurately.

[0045] When the plug 2 34 is pulled, that is, the wire take-up shaft 32 rotates, the wire take-up shaft 32 drives the gear 38 to rotate synchronously, and the gear 38 simultaneously engages the rack 310 during the rotation, pushing the rack 310 toward the push rod 317. During this process, the rack 310 drives the single tooth block 312 on the side away from the detection machine 11 to move synchronously toward the push rod 317 through the slide bar 311. When the single tooth block 312 moves to the meshing position with the gear 38, the gear 38 pushes the single tooth block 312 toward the push rod 317. During this process, the single tooth block 312 slides on the surface of the slide bar 311 and compresses the spring 2 313. When the single tooth block 312 is located on the side of the gear 38 close to the push rod 317 and the gear 38 no longer conflicts with the single tooth block 312, the slide bar 311 elastically stretches to push the single tooth block 31 2 is pushed in the direction of gear 38. During this process, since gear 38 is in a state of continuous rotation, the rotating teeth of gear 38 will intermittently abut against single tooth block 312, pushing single tooth block 312 in the direction of push rod 317. Then, single tooth block 312 abuts against gear 38 again under the elastic extension of slide bar 311. In this reciprocating manner, it can be achieved that during the rotation of gear 38, single tooth block 312 is always located on the side of gear 38 close to push rod 317, and rack 310 slidably connected to single tooth block 312 through slide bar 311 is also located on the side of gear 38 close to push rod 317. Compared with when gear 38 is not rotating, rack 310 moves a distance in the direction of push rod 317, and after displacement, it can continue to abut against single tooth block 312 with gear 38, so that the position of single tooth block 312 is relatively fixed.

[0046] When the user no longer pulls the plug 2 34, that is, the plug 2 34 is connected to the battery, and the limit plate 37 fixes the position of the connecting line 28, the take-up shaft 32 no longer rotates. However, since the limit plate 37 fixes the position of the connecting line 28, the state of the take-up shaft 32 abutting against the single tooth block 312 is also fixed, and the position of the rack 310 is fixed at this time. Compared with when the connecting line 28 is not pulled out, the rack 310 moves a distance in the direction of the push rod 317, and the rack 310 drives the push rod 317 synchronously. The push rod 317 moves a certain distance in the direction of the torsion spring 316. During the movement of the push rod 317, the push rod 317 pushes the trigger rod 315, so that the end of the trigger rod 315 close to the push rod 317 rotates upward with the rotating shaft 314 as the axis, and then the end of the trigger rod 315 away from the push rod 317, that is, the plug end, rotates downward. At this time, the torsion spring 316 produces elastic deformation. At this time, since the plug 27 is fully inserted into the connector 12, the end of the limit block 318 set on the cross plate 24 is just located at the plugging position of the trigger rod 315. The trigger rod 315 is positioned as follows. As the plug-in end of the trigger rod 315 rotates downward, the trigger rod 315 is plugged into the limit block 318. Since the take-up shaft 32 no longer rotates at this time, the state of the trigger rod 315 inserted into the limit block 318 is fixed. Since the limit block 318 is fixed to the cross plate 24, the plug-in end of the trigger rod 315 limits the horizontal direction of the cross plate 24 through the limit block 318. At the same time, the plug 27 and the connector 12 are horizontally inserted at this time, that is, the plugging of the limit block 318 and the trigger rod 315 limits the connection between the plug 27 and the connector 12, which can effectively prevent the plug 27 from loosening from the inside of the connector 12 due to vibration, external force or its own gravity. This limit can ensure that the plug 27 maintains a stable connection in the connector 12, ensures a good electrical connection between the detection machine 11 and the battery, thereby ensuring the stable transmission of current and voltage during the charge and discharge detection process, which helps to improve the reliability of the detection result and avoid inaccurate battery charge and discharge detection data caused by poor contact.

[0047] When the battery charge and discharge detection is completed, that is, when the take-up shaft 32 rotates in the opposite direction, the take-up shaft 32 drives the gear 38 to rotate in the opposite direction, and the gear 38 pushes the rack 310 and the single tooth block 312 in the direction away from the limit block 318. The gear 38 continuously contacts the single tooth block 312 close to the side of the detection machine 11. In combination with the above, it can be seen that at this time, the single tooth block 312 close to the side of the detection machine 11 is continuously contacted, so that the position of the rack 310 is relatively fixed. At this time, under the elastic reset action of the torsion spring 316, the trigger rod 315 is reset, and the plug-in end of the trigger rod 315 no longer limits the limit block 318. When the rack 310 returns to the original position, its side structural view is as shown in the figure. Fig.10 As shown in , at this time, the user can reverse the above steps for the flat plug protection assembly so that the two plugs 27 are plugged into the hollow tube of the protective shell 29 for protection.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0049] 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 new energy vehicle battery pack charge and discharge detection device, comprising a detection machine (11) and two connectors (12), wherein the two connectors (12) are mounted on the detection machine (11), characterized in that: The detection machine (11) is provided with a flat insertion protection component, the flat insertion protection component comprising two slide rails (21), the two slide rails (21) are symmetrically fixedly connected to two sides of the detection machine (11), a U-shaped connecting rod (22) is slidably connected between the two slide rails (21), a telescopic tube (23) is fixedly connected to a side of the middle of the U-shaped connecting rod (22) close to the detection machine (11), an end of the telescopic tube (23) close to the U-shaped connecting rod (22) is a fixed end, and an end of the telescopic tube (23) away from the U-shaped connecting rod (22) is a telescopic end, and the telescopic tube (23) The telescopic end is fixedly connected to a transverse plate (24), a spring (25) is fixedly connected between the transverse plate (24) and the U-shaped connecting rod (22), the telescopic end of the telescopic tube (23) close to the U-shaped connecting rod (22) is symmetrically fixedly connected to two pull plates (26), the side of the transverse plate (24) away from the telescopic tube (23) is symmetrically installed with two plugs (27), the two plugs (27) pass through the transverse plate (24) on the side close to the transverse plate (24) and are each fixedly connected to a connecting line (28), and a protective shell (29) is fixedly connected to the middle of the top surface of the detection machine (11).

2. A new energy vehicle battery pack charge and discharge detection device according to claim 1, characterized in that: The detection machine (11) is symmetrically provided with two wire-winding stabilizing components, the wire-winding stabilizing components comprising a wire reel (31), the wire reel (31) being fixedly connected to the U-shaped connecting rod (22), the wire reel (31) being arranged as a cavity structure, the middle part of the wire reel (31) being rotatably connected to a wire-winding shaft (32), the top of the wire reel (31) being provided with a wire-releasing hole (33), one end of the connecting wire (28) passing through the wire-releasing hole (33) being provided with a plug 2 (34), the top of the wire reel (31) being symmetrically provided with a bunching groove (35) on both sides, the inside of each of the two bunching grooves (35) being slidably connected with a rubber slider (36), one side of the two rubber sliders (36) passing through the bunching grooves (35) being fixedly connected with a limit plate (37), one end of the wire-reel shaft (32) passing through the wire reel (31) being fixedly connected with a gear (38), the gear (38) and the wire reel (31) being fixedly connected with a gear. A clockwork spring (39); a rack (310) is slidably connected to one side of the cable reel (31) close to the gear (38) and located at the bottom of the gear (38); four slide bars (311) are symmetrically slidably connected to the two sides of the rack (310); two ends of the slide bars (311) on the same side away from the rack (310) are fixedly connected to a single tooth block (312); a spring (313) is sleeved on the surface of each of the four slide bars (311); a rotating shaft (314) is fixedly connected to one side of the cable reel (31) close to the gear (38); an end of the rotating shaft (314) away from the cable reel (31) is rotatably connected to a trigger rod (315); a torsion spring (316) is sleeved on the surface of the rotating shaft (314); one end of the rack (310) close to the trigger rod (315) is fixedly connected to a push rod (317); and one end of the horizontal plate (24) close to the cable reel (31) is fixedly connected to a limit block (318).

3. A new energy vehicle battery pack charge and discharge detection device according to claim 1, characterized in that: The spring one (25) is arranged in the cavity of the telescopic tube (23), the two plugs one (27) are respectively located on the moving path of the plug one (27) on the same side, and the two plugs one (27) are plugged and adapted to the connector (12) on the same side.

4. A new energy vehicle battery pack charge and discharge detection device according to claim 1, characterized in that: The top end of the slide rail (21) is set as the sliding starting point of the U-shaped connecting rod (22), the top end of the slide rail (21) and the protective shell (29) are on the same vertical plane, the bottom end of the slide rail (21) is set as the sliding end point of the U-shaped connecting rod (22), and the bottom end of the slide rail (21) and the two connectors (12) are on the same horizontal plane.

5. A new energy vehicle battery pack charge and discharge detection device according to claim 1, characterized in that: The protective shell (29) comprises a horizontal bottom plate and two hollow tubes with top openings, the two hollow tubes are respectively located on the moving path of the plug one (27) on the same side, and the two hollow tubes are respectively plugged and adapted to the plug one (27) on the same side.

6. A new energy vehicle battery pack charge and discharge detection device according to claim 2, characterized in that: The wire take-up shaft (32) is hollow, and one end of the connecting wire (28) connected to the first plug (27) passes through the wire take-up shaft (32). The connecting wire (28) is fixedly connected to the wire take-up shaft (32). The portion of the connecting wire (28) located inside the wire reel (31) is wound around the outer wall of the wire take-up shaft (32) in a spiral shape. The end of the connecting wire (28) connected to the second plug (34) passes through the wire release hole (33) and exits the wire reel (31).

7. A new energy vehicle battery pack charge and discharge detection device according to claim 2, characterized in that: The winding spring (39) is sleeved on the take-up shaft (32), and the two ends of the four springs (313) are respectively fixedly connected to the rack (310) and the single tooth block (312) on the same side.

8. A new energy vehicle battery pack charge and discharge detection device according to claim 2, characterized in that: The two ends of the torsion spring (316) are respectively fixedly connected to the cable reel (31) and the trigger rod (315). The new energy vehicle battery pack charge and discharge detection device according to claim 2 is characterized in that: the rack (310) and the gear (38) are meshed with each other, and the single tooth block (312) and the single tooth of the rack (310) have the same shape and size.

9. A new energy vehicle battery pack charge and discharge detection device according to claim 2, characterized in that: One end of the push rod (317) and the trigger rod (315) that is close to each other is arranged as a complementary inclined surface, and the trigger rod (315) is arranged in an L shape.

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