Residual electric discharge jig for on-vehicle battery

Abstract

The application provides a residual electricity discharging jig for a vehicle-mounted battery, comprising a discharging assembly, the discharging assembly comprising a mounting shell, a plurality of bearing shells arranged side by side being fixed at the bottom of the mounting shell, two symmetrically arranged electric connection rods being installed on the bearing shells, the two electric connection rods being electrically connected with a load unit, and an electric connection end being fixed at the bottom of the electric connection rod; further comprising a cleaning assembly, the cleaning assembly being installed on the bearing shell through a bearing part and being arranged at one side of the electric connection rod, the cleaning assembly comprising a compression part and a flow guide part, the compression part generating airflow when the bearing shell moves downward and guiding the airflow to the battery electrode column through the flow guide part. In the process of moving downward of the discharging assembly, the cleaning assembly pre-cleans the surface of the electrode column before the electric connection end contacts the electrode column, effectively removes dust, an oxidation layer and impurities, reduces the contact resistance, and improves the discharging stability and safety.

Description

Technical Field

[0001] This invention relates to the field of battery recycling, specifically to a residual discharge fixture for vehicle batteries. Background Technology

[0002] With the increasing number of vehicles on the road, the number of scrapped vehicles and retired batteries is rising year by year. When recycling vehicle batteries, it is usually necessary to first discharge the residual charge inside the battery to reduce the safety risks associated with the battery being in a charged state and to provide safe conditions for subsequent dismantling, sorting, and resource recovery. Currently, the treatment of residual charge in vehicle batteries often involves using discharge equipment to connect the battery terminals to an external load, creating a discharge circuit. This allows the remaining electrical energy inside the battery to be released through the load, thereby achieving safe discharge of the battery.

[0003] However, in actual recycling processes, due to long-term use or complex storage environments, the surface of the battery's electrode posts often accumulates dust, oxide layers, and other impurities. These contaminants form an insulating layer between the electrode posts and the contact points of the discharge equipment, leading to increased contact resistance. This can cause localized heating, unstable contact, and even sparking or arcing during discharge, affecting not only the stability of the discharge process but also posing certain safety hazards. Furthermore, poor contact can cause voltage detection errors, affecting the accurate assessment of the battery's remaining charge and state, thus negatively impacting subsequent tiered utilization or recycling.

[0004] Furthermore, in existing technologies, addressing electrode column surface contamination typically relies on manual cleaning or a separate cleaning process before discharge. This not only increases operational steps and labor costs but also makes it difficult to effectively integrate with the discharge process, resulting in a low overall level of automation. Therefore, how to improve the cleanliness of the electrode column contact surface without adding extra complex structures, while ensuring the stability and safety of the discharge process, has become a pressing technical problem to be solved in this field.

[0005] Therefore, a residual discharge fixture for vehicle batteries is provided to address the above-mentioned problems. Summary of the Invention

[0006] In order to solve the problems of increased contact resistance, reduced stability and safety of discharge process caused by impurities adhering to the electrode post surface in the prior art, and the low degree of automation of the cleaning process due to reliance on manual labor, the present invention provides a residual discharge fixture for vehicle batteries.

[0007] The present invention solves the above-mentioned technical problems through the following technical solutions: This invention provides a residual current discharge fixture for vehicle batteries, including a discharge assembly. The discharge assembly includes a mounting shell, and a plurality of side-by-side support shells are fixed to the bottom of the mounting shell. Two symmetrically arranged electrical connecting rods are mounted on the support shells. The two electrical connecting rods are electrically connected to a load unit, and electrical connecting ends are fixed to the bottom of the electrical connecting rods. The cleaning component is mounted on the carrier housing via a carrier part and is located on one side of the power receiving pole. The cleaning component includes a compression part and a guide part. The airflow generated by the compression part as the carrier housing descends is guided to the battery electrode post by the guide part.

[0008] During the downward movement of the discharge assembly, the cleaning assembly pre-cleans the electrode post surface before the connection action, effectively removing dust, oxide layers, and attached impurities. This provides good contact conditions for subsequent connection, reduces contact resistance, and improves the stability and safety of the discharge process. Simultaneously, the cleaning assembly does not require a separate drive mechanism; instead, it is driven by the downward movement of the discharge assembly. This synchronizes the cleaning and discharge actions, simplifying the overall structure, reducing equipment costs, and improving system reliability and automation.

[0009] In this technical solution, the bearing part includes an annular bearing plate, and two vertically arranged sleeve rings are fixed on both sides of the bearing plate. The two sleeve rings are slidably sleeved on two guide vertical rods, and the two guide vertical rods are fixed on the bottom side wall of the bearing shell. A first spring is sleeved on the surface of the guide rod, and the two ends of the first spring are fixed to the sleeve ring and the guide rod, respectively. At least two connecting vertical rods that overlap the battery are fixed to the bottom of the support plate.

[0010] In this technical solution, the compression section includes a vertically arranged push-pull shell, which is a cylindrical structure. The push-pull shell is fixed to the bearing section by a rod. A piston plate is slidably connected in the inner cavity of the push-pull shell, and the top of the piston plate is connected to the drive unit for transmission. Furthermore, the bottom of the push-pull shell is connected to the flow guide.

[0011] In this technical solution, the flow guide includes an air guide pipe, one end of which is fixed to the bottom side wall of the push-pull shell, and a flow guide shell is fixed to the bottom end of the air guide pipe. The air outlet at the bottom of the flow guide shell is bent toward the side of the electric pole.

[0012] Specifically, the push-pull shell is fixed to the bearing plate by a rod, and a sliding seal structure is formed between the piston plate and the inner cavity side wall of the push-pull shell.

[0013] In this technical solution, the drive unit includes two meshing first gears and second gears. The first gears and second gears are mounted on the support unit through a connecting frame, and the first gears and second gears can rotate on the connecting frame. The first gear meshes with the driven rack arranged vertically, and the driven rack is fixedly connected to the transmission vertical rod through an "L"-shaped rod. The transmission vertical rod is fixedly connected to the top side wall of the piston plate. The second gear meshes with a drive rack that is also arranged vertically, and the drive rack is fixed to the bearing housing or the extension end of the bearing housing by a connecting rod.

[0014] The specific connection method between the first gear and the second gear and the support plate is not shown in the figure. It is sufficient to ensure that the first gear and the second gear mesh with each other and are mounted on the support plate.

[0015] This technical solution also includes a grinding component, which is disposed on the bearing shell or an extension of the bearing shell; The polishing assembly includes a polishing part and a transmission part. The transmission part and the polishing part move down synchronously with the carrier shell until the polishing end face on the polishing part touches the surface of the battery electrode post. The reaction force of the electrode post surface on the transmission part pushes the polishing part to move away from the electrode post, thereby polishing the oxide layer on the surface of the electrode post.

[0016] In this technical solution, the transmission part includes a transmission frame. The bottom of the transmission frame is provided with a transmission inclined surface that is inclined in the direction away from the electric pole. The top of the transmission frame is fixedly connected to the bearing shell or the extension end of the bearing shell through a synchronous vertical rod. The synchronous vertical rod passes through the cavity of the bearing plate. The moving end of the grinding part overlaps with the transmission ramp or leaves a gap between it and the transmission ramp. The moving end of the transmission part moves on the downward transmission ramp, thereby causing the grinding part to move away from the electrode post of the connecting rod and the battery.

[0017] In this technical solution, the grinding part includes a mounting plate, on the top side wall of the mounting plate are mounted a self-rotating traveling wheel, and on both sides of the mounting plate are fixed telescopic and spring-loaded support rods. A slider is fixed to the top of the support rod. The two sliders are slidably connected to two horizontally distributed load-bearing guide rails, which are fixed to the synchronous vertical rod. A grinding plate is fixed to the bottom of the mounting plate via a transmission rod.

[0018] This technical solution also includes a guide assembly for guiding the installation shell to move smoothly downwards. The guide assembly includes a base plate, with load-bearing vertical rods fixed at the four corners of the base plate and a top plate fixed at the top of the load-bearing vertical rods. Guide sleeves are slidably sleeved on the four load-bearing vertical rods, and the guide sleeves on the surfaces of the two load-bearing vertical rods on the same side are fixed on a connecting frame on one side.

[0019] A placement box is fixed on the base plate. Inside the placement box are batteries arranged side by side, with the electrode posts on the batteries located directly below the corresponding electrode rods.

[0020] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0021] The positive and progressive effects of this invention are as follows: As the discharge assembly moves downwards and gradually approaches the battery electrode post, a pre-cleaning component contacts the electrode post surface before the discharge assembly, pre-cleaning the surface of dust, oxide layer, and attached impurities, thereby effectively improving the cleanliness of the subsequent electrical connection interface. Simultaneously, the cleaning component's operation does not require a separate drive source; instead, it is driven in conjunction with the downward movement of the discharge assembly, creating a coordinated relationship between the cleaning and discharge connection actions in both time and space.

[0022] The aforementioned structural design significantly reduces the contact resistance between the electrode post and the discharge contact, minimizing localized heating, sparking, or arcing caused by poor contact, thus improving the stability and safety of the discharge process. Furthermore, because the cleaning process is coupled with the movement of the discharge assembly, the need for an additional drive mechanism is eliminated, simplifying the overall structure, reducing equipment costs, and enhancing system reliability and automation. In addition, this pre-cleaning process reduces voltage detection errors caused by contaminants, improving discharge control accuracy and providing a more accurate data basis for subsequent battery status assessment and grading. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the connection structure between the guiding component and the discharge component of the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of the structure viewed from below; Figure 3 This is a schematic diagram of the structure of the discharge assembly of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the structure viewed from below; Figure 5 For the present invention Figure 3 A top-view structural diagram; Figure 6 For the present invention Figure 5 Schematic diagram of the cross-sectional structure at point AA; Figure 7 This is a schematic diagram of the structure of the bearing shell and the connecting rod of the present invention; Figure 8 This is a schematic diagram of the cleaning component of the present invention; Figure 9 For the present invention Figure 8 A schematic diagram of the structure viewed from below; Figure 10This is a schematic diagram of the grinding component of the present invention; Figure 11 For the present invention Figure 10 A schematic diagram of the structure viewed from below; Figure 12 For the present invention Figure 8 A top-view structural diagram; Figure 13 For the present invention Figure 12 A three-dimensional structural diagram of the cross-section at point BB.

[0024] Explanation of reference numerals in the attached figures 101. Guiding component; 1011. Base plate; 1012. Top plate; 1013. Supporting vertical rod; 1014. Guide sleeve; 1015. Placement box; 102. Discharge assembly; 103. Battery; 1. Mounting housing; 11. Connecting housing; 12. Handle; 2. Cooling fan; 3. Supporting shell; 4. Load unit; 5. Connecting pole; 51. Connecting terminal; 6. Bearing component; 61. Bearing plate; 62. Connecting ring; 63. Guide vertical rod; 64. Overlapping vertical rod; 7. Cleaning assembly; 71. Push-pull housing; 72. Piston plate; 73. Transmission vertical rod; 74. Driven rack; 75. First gear; 76. Second gear; 77. Drive rack; 78. Connecting rod; 79. Air guide pipe; 791. Flow guide housing; 8. Grinding assembly; 81. Load-bearing guide rail; 82. Synchronous vertical rod; 83. Slider; 831. Telescopic rod; 84. Traveling wheel; 85. Mounting horizontal plate; 851. Transmission rod; 852. Grinding plate; 86. Transmission frame; 861. Transmission inclined plane; 9. Fixture. Detailed Implementation

[0025] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments.

[0026] like Figure 3 , Figure 4 and Figure 7 As shown, a residual discharge fixture for vehicle batteries includes a discharge assembly 102. The discharge assembly 102 includes a mounting shell 1. Connecting shells 11 are fixed on both sides of the mounting shell 1. Multiple bearing shells 3 are arranged side by side on the bottom of the mounting shell 1. Two symmetrically arranged connecting rods 5 are installed on the bearing shells 3. The two connecting rods 5 are electrically connected to the load unit 4, and a connecting end 51 is fixed at the bottom of the connecting rod 5. The cleaning component 7 is mounted on the carrier shell 3 via the carrier part 6 and is located on one side of the power receiving rod 5. The cleaning component 7 includes a compression part and a guide part. The airflow generated by the compression part as the carrier shell 3 descends is guided to the electrode post of the battery 103 through the guide part.

[0027] Example 1 In this embodiment, as Figure 8 As shown, the bearing part 6 includes an annular bearing plate 61. Both sides of the bearing plate 61 are fixed with vertically arranged sleeve rings 62. The two sleeve rings 62 are slidably sleeved on two guide vertical rods 63, and the two guide vertical rods 63 are fixed on the bottom side wall of the bearing shell 3. A first spring is sleeved on the surface of the guide rod 63, and the two ends of the first spring are fixed on the sleeve ring 62 and the guide rod 63 respectively; At least two overlapping vertical rods 64 are fixed to the bottom of the support plate 61 and are attached to the battery 103.

[0028] When the first spring is in its normal state (without deformation), the bottom of the overlapping vertical rod 64 protrudes from the electrical terminal 51.

[0029] Example 2 like Figure 8 and Figure 9 As shown, the compression section includes a vertically arranged push-pull shell 71, which is a cylindrical structure. The push-pull shell 71 is fixed to the bearing section 6 by a rod. A piston plate 72 is slidably connected in the inner cavity of the push-pull shell 71, and the top of the piston plate 72 is connected to the drive unit for transmission. Furthermore, the bottom of the push-pull shell 71 is connected to the flow guide.

[0030] The flow guide includes an air guide pipe 79. One end of the air guide pipe 79 is fixed to the bottom side wall of the push-pull shell 71 and communicates with the inner cavity formed by the inner wall of the push-pull shell 71 and the piston plate 72. The bottom end of the air guide pipe 79 is fixed with a flow guide shell 791. The bottom air outlet of the flow guide shell 791 is bent toward the side of the electric rod 5.

[0031] Specifically, the push-pull shell 71 is fixed to the bearing plate 61 by a rod, and a sliding seal structure is formed between the piston plate 72 and the inner cavity side wall of the push-pull shell 71.

[0032] Specifically, one-way valves are provided on the surface of the piston plate 72 and the air guide pipe 79. The piston plate 72 has through holes, and the corresponding one-way valves are embedded inside the through holes. The one-way valves on the piston plate 72 allow air to enter the inner cavity of the push-pull shell 71 only through the one-way valves; the one-way valves on the air guide pipe 79 allow air to flow from the push-pull shell 71 to the guide shell 791 only.

[0033] The one-way valve on the piston plate 72 is used as the air inlet of the push-pull housing 71.

[0034] As the support shell 3 moves downward with the mounting shell 1 until the connecting rod overlaps the surface of the battery 103, the support plate 61 stops moving downward. The connecting rod 5, the support shell 3, and the mounting shell 1 continue to move downward, and the drive unit starts to operate, thereby pushing the piston plate 72 downward. The piston plate 72 forces the air inside the push-pull shell 71 into the air guide pipe 79, and blows it from the bottom opening of the guide shell 791 to the surface of the electrode post of the battery 103, thus completing the cleaning of the upper surface of the electrode post.

[0035] Specifically, the drive unit includes two meshing first gears 75 and second gears 76. The first gears 75 and second gears 76 are mounted on the support part 6 via a connecting frame. The first gears 75 and second gears 76 can rotate on the connecting frame. The first gear 75 meshes with the driven rack 74 arranged vertically, and the driven rack 74 is fixedly connected to the transmission vertical rod 73 through an "L"-shaped rod. The transmission vertical rod 73 is fixedly connected to the top side wall of the piston plate 72. The second gear 76 meshes with the drive rack 77, which is also arranged vertically. The drive rack 77 is fixed to the bearing shell 3 or the extension end of the bearing shell 3 by the connecting rod 78.

[0036] The specific connection method between the first gear 75 and the second gear 76 and the support plate 61 is not shown in the figure. It is sufficient to ensure that the first gear 75 and the second gear 76 mesh with each other and are installed on the support plate 61.

[0037] Preferably, the diameter of the first gear 75 is smaller than the diameter of the second gear 76.

[0038] Specifically, the push-pull shell 71 is fixed to the bearing plate 61 by a rod.

[0039] During the discharge operation, the mounting shell 1 and connecting shell 11 are first placed on top of the batteries 103 arranged side by side, so that the two connecting rods 5 on the same supporting shell 3 are respectively positioned directly above the electrode posts of each battery 103. Then, the operator controls the mounting shell 1 to move it down smoothly using the handles 12 on the two connecting shells 11 until the connecting end 51 at the bottom of each connecting rod 5 fully overlaps with the electrode post of the corresponding battery 103, forming a reliable electrical contact. Then, the circuit switch is turned on to make the discharge circuit conductive, thereby realizing the discharge process of the battery 103.

[0040] During the downward movement of the mounting shell 1 and the supporting shell 3, a hierarchical movement relationship exists within the structure: the overlapping rod preferentially contacts the top surface of the battery 103. Once the overlapping rod overlaps the surface of the battery 103, it stops moving downwards, and the supporting plate 61 connected to it stops moving synchronously, thus keeping the first gear 75, the second gear 76, and the push-pull shell 71 mounted on the supporting plate 61 relatively stationary. At this time, the supporting shell 3, the power connection rod 5, and the guide vertical rod 63 continue to move downwards, with the guide vertical rod 63 sliding relative to each other within the sleeve ring 62, causing the first spring to undergo compression deformation. This hierarchical movement design ensures the stability of the power connection process and provides displacement difference conditions for the subsequent driving of the cleaning component 7.

[0041] As the supporting shell 3 continues to move downwards, the drive rack 77, which is fixedly connected to the supporting shell 3 or the supporting extension end, moves downwards synchronously. The drive rack 77 pushes the second gear 76, which meshes with it, to rotate. The second gear 76 then drives the driven rack 74 downwards through the first gear 75, thereby driving the piston plate 72 to move downwards. During the downward movement of the piston plate 72, the gas inside the push-pull shell 71 is compressed and forced into the air guide pipe 79. The gas is then transported through the air guide pipe 79 to the flow guide shell 791 and ejected, forming a directional airflow that acts on the surface of the electrode post of the battery 103, thereby cleaning the dust and attached impurities on the surface of the electrode post. Through the above-mentioned linkage design of mechanical transmission and airflow output, the cleaning action can be achieved without an additional power source, resulting in a compact structure and high energy utilization efficiency.

[0042] Furthermore, the cleaning component 7 only starts working after the connecting rod and the surface of the battery 103 have completed the connection. That is, the airflow shell 791 only generates airflow output when it is close to the electrode post. This avoids the cleaning component 7 generating ineffective airflow before it is close to the electrode post, which not only prevents the device from running idle, but also avoids dust being stirred up due to premature airflow, thereby improving the overall cleaning efficiency and the stability of the working environment.

[0043] Furthermore, the arrangement of the overlapping rods on the support plate 61 is designed based on the top surface structure of the battery 103, so that each overlapping rod preferentially overlaps in a relatively flat area near the electrode post, and the multiple overlapping rods are distributed in a ring array as much as possible. This layout can improve the stability and stress uniformity of the overlapping process.

[0044] Preferably, the air guide tube 79 is composed of two tubes that slide together and are slidably connected, and the sliding connection is a sliding seal. A second spring is sleeved on the surface of the air guide tube 79, and the two ends of the second spring are respectively fixed to the surfaces of the two tubes. When the first spring and the second spring do not deform, the bottom of the flow guide shell 791 protrudes from the bottom of the electrical terminal 51.

[0045] This allows the airflow generated by the guide shell 791 to reach the surface of the electrode post. After the guide shell 791 first overlaps with the surface of the battery 103, the air duct 79 shortens until the electrical terminal 51 overlaps with the electrode post, at which point the second spring deforms.

[0046] Example 3 like Figure 10 and Figure 11 As shown, it also includes a polishing component 8, which is disposed on the support shell 3 or an extension of the support shell 3; The polishing assembly 8 includes a polishing part and a transmission part. The transmission part and the polishing part move down synchronously with the bearing shell 3 until the polishing end face on the polishing part overlaps the electrode post surface of the battery 103. The reaction force of the electrode post surface on the transmission part pushes the polishing part to move away from the electrode post, thereby polishing the oxide layer on the electrode post surface. The polished end face is located below the power connection end 51.

[0047] Specifically, the transmission unit includes a transmission frame 86. The bottom of the transmission frame 86 is provided with a transmission inclined surface 861 that is inclined in the direction away from the electric pole 5. The top of the transmission frame 86 is fixedly connected to the bearing shell 3 or the extension end of the bearing shell 3 through a synchronous vertical rod 82. The synchronous vertical rod 82 passes through the cavity of the bearing plate 61. The moving end of the grinding part overlaps with the transmission inclined surface 861 or leaves a gap between it and the transmission inclined surface 861. The moving end of the transmission part moves on the downward transmission inclined surface 861, thereby causing the grinding part to move away from the electrode post of the connecting rod 5 and the battery 103.

[0048] Furthermore, the grinding section includes a mounting plate 85, on the top side wall of the mounting plate 85, a self-rotating traveling wheel 84 is mounted, the traveling wheel 84 is the moving end of the grinding section, and retractable and spring-loaded support rods are fixed on both sides of the mounting plate 85. A slider 83 is fixed to the top of the support rod. The two sliders 83 are slidably connected to two horizontally distributed bearing guide rails 81, which are fixed to the synchronous vertical rod 82. A grinding plate 852 is fixed to the bottom of the mounting plate 85 via a transmission rod 851. The bottom of the grinding plate 852 has a rough grinding end face, and one end of the grinding plate 852 extends over the surface of the electrode post.

[0049] like Figure 10 As shown, the grinding plate 852 is preferably long and narrow. The longer the grinding plate 852 is, the larger its effective grinding area and the longer the grinding time.

[0050] Specifically, the length of the grinding plate 852 is positively correlated with the length of the vertical projection of the transmission inclined surface 861. That is, the longer the vertical projection of the transmission inclined surface 861, the longer the length of the grinding plate 852 can be.

[0051] The grinding assembly 8 moves down synchronously with the bearing shell 3 and the connecting rod 5, and the grinding plate 852 also moves down synchronously. During the downward movement of the device, the overlapping rod first overlaps with the top surface of the battery 103, and then gradually transitions to the grinding plate 852 overlapping with the surface of the electrode post during the subsequent downward movement, thus forming a stable initial support and positioning foundation.

[0052] As the grinding plate 852 moves further downward and contacts the electrode post surface, the grinding section stops moving downward, while the supporting shell 3 continues its downward movement, driving the transmission section mounted on it to move downward synchronously. During the downward movement, the transmission frame 86 on the transmission section has its bottom transmission ramp 861 in contact with the rotating wheel, pushing the rotating wheel to rotate on the transmission ramp 861 and move along the ramp direction. During this process, the support rod retracts, and the slider 83 connected to the support rod slides along the supporting guide rail 81 away from the electrode rod 5, thereby driving the grinding plate 852 to move outward.

[0053] During the outward movement, the grinding plate 852 generates relative friction with the surface of the electrode post, grinding the surface of the electrode post and gradually removing the oxide layer and attached impurities until the grinding plate 852 is completely detached from the electrode post. Subsequently, after the grinding plate 852 has been detached from the electrode post for a period of time, the electrical terminal 51 continues to move downward and overlaps the top surface of the electrode post, thereby achieving good electrical contact conditions.

[0054] By setting the aforementioned polishing component 8 before power connection, the top surface of the electrode post can be pre-treated, effectively removing the oxide layer, significantly reducing contact resistance, and improving the stability and safety of subsequent power connection and discharge processes. Simultaneously, since the connecting rod has already connected to the surface of the battery 103 and triggered the operation of the cleaning component 7, oxide powder and impurities generated during polishing can be promptly removed by the cleaning component 7, preventing residual impurities from affecting the electrical connection quality, thereby further improving the overall processing effect.

[0055] Furthermore, the grinding assembly 8 relies on the relative motion generated during the downward movement of the bearing shell 3, and is driven by the mechanical cooperation between the transmission unit, the transmission frame 86 and the transmission inclined surface 861. The grinding action can be completed without the need for an additional independent power source, which not only simplifies the device structure and reduces energy consumption and cost, but also improves the reliability and coordination of the system operation.

[0056] Preferably, when the electrical terminal 51 is attached to the surface of the electrode post, the traveling wheel 84 remains on the transmission ramp 861.

[0057] Furthermore, the reaction force of the first spring causes the electrical terminal 51 to be stably pressed against the top surface of the electrode post.

[0058] The support rod includes a telescopic rod 831 arranged vertically. A third spring is sleeved on the surface of the telescopic rod 831. The two ends of the third spring are respectively fixed to the two ends of the telescopic rod 831. The top of the telescopic rod 831 is fixed to the slider 83, and the bottom is fixed to the mounting plate 85.

[0059] The extended end of the bearing shell 3 is a fixing frame 9, which is fitted around the outside of the power receiving pole 5 and fixed to the bottom of the bearing shell 3 by a rod.

[0060] When there is a gap between the traveling wheel 84 and the transmission inclined surface 861, after the grinding plate 852 contacts the top surface of the electrode post, the support rod retracts, and the traveling wheel 84 does not immediately contact the transmission inclined surface 861. At this time, the grinding plate 852 is pressed against the top surface of the electrode post by the reaction force of the third spring until the traveling wheel 84 overlaps the transmission inclined surface 861. During this process, the reaction force of the third spring makes the grinding plate 852 press tightly against the surface of the electrode post, which increases the grinding force and provides a good foundation for subsequent grinding.

[0061] Example 4 like Figure 1 and Figure 2 As shown, it also includes a guide assembly 101 that guides the mounting shell 1 to move down smoothly. The guide assembly 101 includes a base plate 1011, with a bearing vertical rod 1013 fixed at each of the four corners of the base plate 1011, and a top plate 1012 fixed at the top of the bearing vertical rod 1013. Guide sleeves 1014 are slidably sleeved on each of the four bearing vertical rods 1013, and the guide sleeves 1014 on the surfaces of two bearing vertical rods 1013 on the same side are fixed on a connecting frame on one side.

[0062] A placement box 1015 is fixed on the base plate 1011. Inside the placement box 1015, batteries 103 are arranged side by side, and the electrode posts on the batteries 103 are located directly below the corresponding connecting rods 5.

[0063] By pushing the connecting shell 11 and the bearing shell 3 downward through the handle 12 on the connecting frame, the connecting shell 11 and the bearing shell 3 can be moved downward smoothly through the sliding connection between the guide sleeve 1014 and the bearing vertical rod 1013.

[0064] Preferably, a threaded sleeve is provided on each of the two connecting shells 11, and the threaded sleeve is sleeved on the surface of the threaded rod, and the threaded sleeve and the threaded rod mesh with each other. The two ends of the threaded rod are respectively installed on the top plate 1012 and the bottom plate 1011, and can rotate. Both threaded rods are connected to the output end of the motor for transmission. The motor drives the threaded rod to rotate, thereby pushing the threaded sleeve at one end of its surface, realizing the mechanized and smooth downward movement of the connecting shell 11 and the bearing shell 3.

[0065] The motor is mounted on the top plate 1012 or the bottom plate 1011.

[0066] Example 5 The load unit 4 consists of multiple resistors, each electrically connected to two connecting rods 5 on the carrier shell 3, thus forming a corresponding discharge circuit between the two connecting rods 5. With this structure, when the electrodes of the battery 103 are connected to the connecting rods 5, current is released through the load unit 4 composed of resistors, thereby discharging the residual charge of the battery 103. Preferably, the multiple resistors can be connected in parallel, series, or a series-parallel combination as needed to adjust the overall equivalent resistance value, thereby achieving matched control of the discharge current and discharge power to meet the discharge requirements of batteries 103 of different specifications.

[0067] In addition, other structures and their operating methods used to achieve the discharge of battery 103 are all conventional technical means in this field, such as electrical connection structures, control units and protection measures, etc., and will not be described in detail here.

[0068] A cooling fan 2 is also provided on the mounting shell 1.

[0069] This invention is not limited to the embodiments described above. Any changes in shape or structure shall fall within the protection scope of this invention. The protection scope of this invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of this invention, but all such changes and modifications shall fall within the protection scope of this invention.

Claims

1. A residual discharge fixture for vehicle batteries, comprising a discharge assembly (102), the discharge assembly (102) comprising a mounting shell (1), a plurality of side-by-side support shells (3) fixed to the bottom of the mounting shell (1), two symmetrically arranged connecting rods (5) mounted on the support shells (3), the two connecting rods (5) being electrically connected to a load unit (4), and a connecting end (51) fixed to the bottom of the connecting rods (5), characterized in that: Cleaning component (7), the cleaning component (7) is mounted on the carrier shell (3) through the carrier part (6), and the cleaning component (7) is located on one side of the electric rod (5). The cleaning component (7) includes a compression part and a guide part. The airflow generated by the compression part as the carrier shell (3) descends is guided to the battery (103) electrode post through the guide part. It also includes a polishing assembly (8), which is disposed on the support shell (3) or an extension of the support shell (3); The polishing assembly (8) includes a polishing part and a transmission part. The transmission part and the polishing part move down synchronously with the bearing shell (3) until the polishing end face on the polishing part overlaps the electrode post surface of the battery (103). Then, the reaction force of the electrode post surface on the transmission part pushes the polishing part to move away from the electrode post.

2. The residual discharge fixture for vehicle batteries as described in claim 1, characterized in that: The bearing part (6) includes an annular bearing plate (61), and two vertically arranged sleeve rings (62) are fixed on both sides of the bearing plate (61). The two sleeve rings (62) are respectively slidably sleeved on two guide vertical rods (63), and the two guide vertical rods (63) are fixed on the bottom side wall of the bearing shell (3). A first spring is sleeved on the surface of the guide rod (63), and the two ends of the first spring are respectively fixed on the sleeve ring (62) and the guide rod (63); At least two overlapping vertical rods (64) are fixed to the bottom of the support plate (61) and overlap the battery (103).

3. The residual discharge fixture for vehicle batteries as described in claim 1, characterized in that: The compression section includes a vertically arranged push-pull shell (71), which is fixed to the bearing section (6) by a rod. A piston plate (72) is slidably connected in the inner cavity of the push-pull shell (71), and the top of the piston plate (72) is connected to the drive unit. The bottom of the push-pull shell (71) is connected to the flow guide.

4. The residual discharge fixture for vehicle batteries as described in claim 3, characterized in that: The flow guide includes an air guide pipe (79), one end of which is fixed to the bottom side wall of the push-pull shell (71), and a flow guide shell (791) is fixed to the bottom end of the air guide pipe (79). The bottom airflow outlet of the flow guide shell (791) is bent toward the side of the electric rod (5).

5. The residual discharge fixture for vehicle batteries as described in claim 3, characterized in that: The push-pull shell (71) is fixed to the bearing plate (61) by a rod, and a sliding seal structure is formed between the piston plate (72) and the inner cavity side wall of the push-pull shell (71).

6. The residual discharge fixture for vehicle batteries as described in claim 3, characterized in that: The drive unit includes two meshing first gears (75) and second gears (76), which are mounted on the support part (6) via a connecting frame. The first gear (75) meshes with the driven rack (74) arranged vertically, and the driven rack (74) is fixedly connected to the transmission vertical rod (73), which is fixedly connected to the top side wall of the piston plate (72); The second gear (76) meshes with a drive rack (77) that is also arranged vertically, and the drive rack (77) is fixed to the bearing shell (3) or the extension end of the bearing shell (3) by a connecting rod (78).

7. The residual discharge fixture for vehicle batteries as described in claim 1, characterized in that: The transmission unit includes a transmission frame (86), the bottom of which is provided with a transmission inclined surface (861) that is inclined toward the side away from the electric pole (5), and the top of the transmission frame (86) is fixedly connected to the bearing shell (3) or the extension end of the bearing shell (3) through a synchronous vertical rod (82). The moving end of the grinding part is attached to the transmission inclined surface (861) or there is a gap between it and the transmission inclined surface (861), and the moving end of the transmission part moves on the downward transmission inclined surface (861).

8. The residual discharge fixture for vehicle batteries as described in claim 7, characterized in that: The grinding section includes a mounting plate (85), on the top side wall of the mounting plate (85) are mounted a self-rotating walking wheel (84), and on both sides of the mounting plate (85) are fixed retractable and spring-loaded support rods. The top of the support rod is fixed with a slider (83), and the two sliders (83) are respectively slidably connected to two horizontally distributed bearing guide rails (81), which are fixed on the synchronous vertical rod (82). The bottom of the mounting plate (85) is fixed with a grinding plate (852) via a transmission rod (851).

9. The residual discharge fixture for vehicle batteries as described in claim 1, characterized in that: It also includes a guide assembly (101) for guiding the installation shell (1) to move down smoothly. The guide assembly (101) includes a base plate (1011). Each of the four corners of the base plate (1011) is fixed with a bearing vertical rod (1013), and the top of the bearing vertical rod (1013) is fixed with a top plate (1012). Each of the four bearing vertical rods (1013) is slidably sleeved with a guide sleeve (1014). The guide sleeves (1014) on the surfaces of the two bearing vertical rods (1013) on the same side are fixed on a connecting frame on one side.

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