Equipment for rapidly detecting residual capacity of retired battery

Abstract

The invention relates to the technical field of batteries, in particular to a fast detection device for the residual capacity of a decommissioned battery, which comprises a rack and a battery dragging table arranged on the rack, the rack is of a concave cavity structure, two sides of the battery dragging table are provided with through openings, a battery cell monomer module in the decommissioned battery is placed on the battery dragging table, and the battery cell monomer module is connected with the rack. The electrode tips of the battery cell monomer modules are arranged in the through openings, the two rollers on the inclined lapping piece abut against the upper ends of the battery cell monomer modules respectively, the battery cell monomer modules under the inclined lapping piece are positioned, meanwhile, the charging and discharging connector is automatically and electrically connected with the electrode tips of the battery cell monomer modules, and constant-amplitude discharging is carried out; and the temperature measurement instrument performs synchronous temperature measurement on the upper part of the battery cell monomer module under the discharge working condition, and data comparison with a standard battery capable of being used in an echelon manner is performed, so that whether the residual capacity of the battery cell monomer module meets the echelon utilization requirement or not can be quickly detected, and the low-efficiency test of batch retired batteries caused by overlarge discharge time span is avoided.

Description

Technical Field

[0001] The present invention relates to the field of battery technology, and in particular to a device for quickly detecting the remaining capacity of retired batteries. Background Art

[0002] The batteries of new energy vehicles still have a certain amount of residual capacity when they are retired. Before they are reused, the health status of the retired batteries needs to be accurately assessed to ensure the application scope and safety of their reuse. The existing technology for detecting the remaining capacity of retired batteries is often carried out by moving the retired power batteries to charging and discharging locations respectively.

[0003] For example, the Chinese patent application number CN202021174607.9 discloses a retired power battery detection device, which includes a main frame, a distribution box, an upper frame, a battery tray, a charging adapter, a discharge tester, and a wire storage box. The interior of the main frame is a cavity, and the distribution box is placed in the cavity and fixed in position; the upper frame is welded and fixed on both sides of the main frame, and the battery tray is set on the main frame; the charging adapter and the discharge tester are respectively embedded in the upper frame, and a wire storage box is provided on the left side of the charging adapter and the right side of the discharge tester; it can perform charging and discharge performance tests on retired batteries with a remaining capacity of about 80%. The test results are accurate, and it can detect whether the retired batteries meet the standards for use in energy storage stations. It has an effective auxiliary function for the recycling and utilization of retired new energy batteries, saving time and effort. However, during actual testing, the device must fully charge each battery before testing, and the testing process must discharge all retired batteries to be tested. However, since retired batteries have been used in vehicles for a long time, their DC internal resistance will be significantly higher than that of new batteries, resulting in higher heat generation during operation. Therefore, a low-power consumption method must be used for testing. This method will result in a long discharge time span and cannot guarantee the rapidity of batch testing of retired batteries. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to propose a device for quickly detecting the remaining capacity of retired batteries to solve the technical problem that the discharge time span of the existing technology is too large during actual testing and the rapidity of batch testing of retired batteries cannot be guaranteed.

[0005] To achieve the above objectives, the present invention provides a device for rapidly detecting the remaining capacity of retired batteries, comprising a frame and a battery tray mounted on the frame, wherein the frame is a concave structure, and through openings are provided on both sides of the battery tray. Cell modules of retired batteries are placed on the battery tray, and electrode heads of the cell modules are placed in the through openings. The rapid detection device further comprises:

[0006] A sliding seat, the sliding seat is slidably arranged in the concave cavity of the frame through a guide rail, and a mounting frame is installed on the sliding seat;

[0007] A detection mechanism for detecting the degree of heating and discharge of the battery cell module, the detection mechanism being mounted on the mounting frame via a cylinder;

[0008] A limiting mechanism for fixing the battery cell module, wherein the limiting mechanism is installed on the detection mechanism;

[0009] A driving mechanism for driving the sliding seat to move.

[0010] Furthermore, the detection mechanism includes:

[0011] A lifting plate, the lifting plate is installed on the output end of the cylinder, and a temperature measuring instrument is installed at the lower end of the lifting plate;

[0012] A connecting member, wherein the middle section of the connecting member is inclined and slidably arranged on the lifting plate;

[0013] There are two adjusting blocks, each of which is slidably disposed on both sides of the sliding seat, and each adjusting block is fixedly connected to the lower portion of the connecting member;

[0014] A charging and discharging connector is installed on the adjusting block, and corresponds to the through opening in the horizontal direction.

[0015] Furthermore, the limiting mechanism includes:

[0016] A lifting head, the lifting head is limitedly slidably arranged on the lifting plate, and the lifting head is also placed on both sides of the thermometer;

[0017] a spring, wherein the upper end of the spring abuts against the lower end of the lifting plate, and the lower end of the spring abuts against the lower portion of the lifting head;

[0018] The diagonal piece is detachably mounted on the lower end of the lifting head, and a roller is mounted on the lower end of the diagonal piece.

[0019] Furthermore, the two sides of the lower end of the diagonal member are arranged in a non-aligned state in the horizontal direction;

[0020] The lower end of the diagonal piece is in a lowered state and corresponds to the explosion-proof groove on the top of the battery cell module;

[0021] The raised end of the lower end of the diagonal piece corresponds to the ungrooved top of the battery cell module.

[0022] Furthermore, the axial cross-section of the roller is in the shape of an I-shape, and the roller is made of rubber.

[0023] Furthermore, the driving mechanism includes:

[0024] A driving motor, wherein the driving motor is mounted on the frame;

[0025] A lead screw, one end of which is coaxially mounted on the output end of the drive motor, the other end of which is rotatably mounted on the other side of the groove structure on the frame, and the lead screw is threadedly connected to one side of the sliding seat.

[0026] Furthermore, the thermometer corresponds to the ungrooved top of the battery cell module in the vertical direction.

[0027] Furthermore, the charging and discharging connector is adjustably mounted on the adjustment block by fastening bolts.

[0028] Furthermore, the upper end of the connecting member is a flat plate structure, and a plurality of buffer heads are evenly distributed on the flat plate structure, and the lower ends of the plurality of buffer heads are in contact with the lifting plate.

[0029] Furthermore, the battery drawer can be detachably mounted on the frame, and a feed port is provided on the battery drawer, which is communicated with the through opening.

[0030] The beneficial effects of the present invention are as follows: by adopting a device for quickly detecting the remaining capacity of retired batteries of the present invention, the two rollers on the diagonal piece respectively reach the upper end of the battery cell module, and the battery cell module directly below is positioned. At the same time, the charging and discharging connectors are automatically electrically connected to the electrode heads of the battery cell module to perform equal-amplitude discharge, and the thermometer synchronously measures the temperature of the upper part of the battery cell module under the discharge condition. By comparing the data with the standard battery that can be recycled, it is possible to quickly detect whether the remaining capacity of the battery cell module meets the requirements for cascade utilization, and avoid inefficient testing of batch retired batteries due to excessive discharge time span. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 This is a schematic diagram of the structure of the present invention (the state of placing a batch of battery cell monomer modules);

[0033] Figure 2This is a schematic diagram of the structure of the present invention (without placing the battery cell module);

[0034] Figure 3 It is a schematic diagram of the assembly of the driving mechanism, the frame and the sliding seat in the present invention;

[0035] Figure 4 It is a schematic diagram of the assembly of some structures in the present invention;

[0036] Figure 5 for Figure 4 A magnified view of the structure at point A;

[0037] Figure 6 This is a schematic diagram of a battery cell module placed on a battery tray in the present invention;

[0038] Figure 7 This is a schematic diagram of the assembly of the lifting plate, the temperature measuring instrument and the connecting parts in the present invention;

[0039] Figure 8 It is a schematic diagram of the assembly of another part of the structure in the present invention.

[0040] The following are marked in the figure:

[0041] 1. Frame; 2. Battery tray; 3. Through opening; 4. Cell module; 5. Sliding seat; 6. Mounting frame; 7. Cylinder;

[0042] 8. Detection mechanism; 81. Lifting plate; 82. Thermometer; 83. Connector; 84. Adjustment block; 85. Charging and discharging connector;

[0043] 9. Limiting mechanism; 91. Lifting head; 92. Spring; 93. Diagonal piece; 94. Roller;

[0044] 10. Driving mechanism; 101. Driving motor; 102. Lead screw;

[0045] 11. Fastening bolts; 12. Buffer head; 13. Feeding port. DETAILED DESCRIPTION

[0046] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to specific embodiments.

[0047] It should be noted that, unless otherwise defined, the technical or scientific terms used in the present invention should have the usual meanings understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0048] The embodiment of the present invention provides a device for quickly detecting the remaining capacity of retired batteries, such as Figure 1-8 As shown, the rapid detection device includes a frame 1 and a battery tray 2 provided on the frame 1. The frame 1 is a concave structure. Through openings 3 are provided on both sides of the battery tray 2. A cell module 4 of a retired battery is placed on the battery tray 2. The electrode head of the cell module 4 is placed in the through opening 3. The rapid detection device also includes:

[0049] The sliding seat 5 is slidably arranged in the concave cavity of the frame 1 through a guide rail, and a mounting frame 6 is installed on the sliding seat 5;

[0050] A detection mechanism 8 for detecting the degree of heating and discharge of the battery cell module 4, the detection mechanism 8 being mounted on the mounting frame 6 via a cylinder 7;

[0051] A limiting mechanism 9 for fixing the battery cell module 4, the limiting mechanism 9 being installed on the detection mechanism 8;

[0052] A driving mechanism 10 is used to drive the sliding seat 5 to move.

[0053] In this embodiment, the detection mechanism 8 includes:

[0054] A lifting plate 81 is installed on the output end of the cylinder 7, and a temperature measuring instrument 82 is installed at the lower end of the lifting plate 81;

[0055] Connecting member 83, the middle section of the connecting member 83 is inclined and slidably arranged on the lifting plate 81;

[0056] There are two adjusting blocks 84 , which are slidably disposed on both sides of the sliding seat 5 , and the adjusting blocks 84 are fixedly connected to the lower portion of the connecting member 83 ;

[0057] The charging and discharging connector 85 is installed on the adjustment block 84 and corresponds to the through opening 3 in the horizontal direction.

[0058] In this embodiment, the limiting mechanism 9 includes:

[0059] The lifting head 91 is slidingly disposed on the lifting plate 81 and is also placed on both sides of the temperature measuring instrument 82;

[0060] Spring 92, the upper end of the spring 92 abuts against the lower end of the lifting plate 81, and the lower end of the spring 92 abuts against the lower part of the lifting head 91;

[0061] The diagonal piece 93 is detachably mounted on the lower end of the lifting head 91 , and a roller 94 is mounted on the lower end of the diagonal piece 93 .

[0062] The specific process of rapid detection of the remaining capacity of the cell module 4 in the retired battery is as follows:

[0063] At the beginning, the fully charged battery cell modules 4 are placed one by one in the battery drag platform 2, and then the cylinder 7 on the mounting frame 6 is started, so that its output end drives the lifting plate 81 downward, so that the two rollers 94 on the diagonal piece 93 respectively reach the upper end of the battery cell module 4, and the battery cell module 4 directly below is positioned. In this process, the oblique middle section of the connecting piece 83 also pushes the adjustment blocks 84 on both sides to slide toward each other along the slide direction on the sliding seat 5 until the charging and discharging connectors 85 on the two adjustment blocks 84 are electrically connected to the electrode heads of the battery cell module 4 extending from both sides of the through opening 3. At this time, the lifting head 91 slides into the lifting plate 81, and the spring 92 is compressed.

[0064] The battery cell module 4 is discharged with a constant amplitude through the charging and discharging connectors 85 connected to high-power consumption equipment on both sides. Under the working condition that the thermometer 82 is against the upper part of the battery cell module 4, the heating degree and discharge degree of the battery cell module 4 per unit discharge time are measured and automatically recorded by the computer. The obtained data is compared with the standard battery that can be recycled. If the heating degree per unit discharge time is lower than the standard value, the remaining capacity of the battery cell module 4 to be tested meets the requirements for recycled.

[0065] Then, the cylinder 7 is activated again to reset its output end, driving the roller 94, the temperature measuring instrument 82, and the charging and discharging connector 85 to separate from the battery cell module 4. Then, the driving mechanism 10 drives the sliding seat 5 to slide along the track in the concave cavity of the frame 1 to the top of the next battery cell module 4.

[0066] Under the same discharge environment, the next battery cell module 4 is quickly tested, and the above operation is repeated until all battery cell modules 4 in a batch are tested.

[0067] In this embodiment, if Figure 4 、 Figure 5 As shown, the two sides of the lower end of the diagonal member 93 are arranged in a non-aligned state in the horizontal direction;

[0068] The lower end of the diagonal piece 93 is in a lower state and corresponds to the explosion-proof groove on the top of the battery cell module 4;

[0069] The raised end of the lower end of the diagonal piece 93 corresponds to the ungrooved top of the battery cell module 4. When the diagonal piece 93 moves downward, the top of the battery cell module 4 can be positioned more safely and securely, avoiding damage to the battery cell module 4 during the inspection process.

[0070] In this embodiment, if Figure 5 As shown, the axial cross-section of the roller 94 is in the shape of an I-shape, and the roller is made of rubber. Under the discharge condition, the roller 94 reduces the blocking effect of the heat generated by the battery cell module 4 without damaging the battery cell module 4 body.

[0071] In this embodiment, if Figure 3 As shown, the driving mechanism 10 includes:

[0072] The driving motor 101 is mounted on the frame 1;

[0073] Screw 102, one end of the screw 102 is coaxially installed on the output end of the drive motor 101, and the other end of the screw 102 is rotatably installed on the other side of the groove structure on the frame 1. The screw 102 is threadedly connected to one side of the sliding seat 5. When the drive motor 101 is started, its output end can drive the screw 102 to rotate, and then drive the sliding seat 5 to slide.

[0074] In this embodiment, if Figure 4 、 Figure 5 、 Figure 7 、 Figure 8 As shown, the thermometer 82 corresponds to the unslotted top of the battery cell module 4 in the vertical direction, and the charge and discharge connector 85 is adjustably mounted on the adjustment block 84 by a fastening bolt 11. The upper end of the connector 83 is a flat plate structure, and a plurality of buffer heads 12 are evenly distributed on the flat plate structure. The lower ends of the plurality of buffer heads 12 are abutted against the lifting plate 81. The height of the charge and discharge connector 85 can be adjusted in time according to the model of the battery cell module 4 to be tested, thereby enhancing the applicability of the detection equipment. In addition, by adding the buffer head 12, the rigid impact loss between the connector 83 and the lifting plate 81 is reduced, thereby enhancing the service life of the detection equipment.

[0075] In this embodiment, if Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 As shown, the battery tray 2 can be detachably mounted on the frame 1. The battery tray 2 is provided with a feed port 13, which is communicated with the through opening 3. The battery cell module 4 can be conveniently placed and removed on the battery tray 2, thereby speeding up the inspection of batches of battery cell modules 4.

[0076] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0077] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A device for quickly detecting the remaining capacity of retired batteries, comprising a frame (1) and a battery tray (2) arranged on the frame (1), characterized in that: The frame (1) is a concave structure, and through openings (3) are provided on both sides of the battery tray (2). A battery cell module (4) in a retired battery is placed on the battery tray (2), and an electrode head of the battery cell module (4) is placed in the through opening (3). The rapid detection device further comprises: A sliding seat (5), the sliding seat (5) being slidably disposed in a concave cavity of the frame (1) via a guide rail, and a mounting frame (6) being mounted on the sliding seat (5); A detection mechanism (8) for detecting the degree of heating and discharge of the battery cell module (4), wherein the detection mechanism (8) is mounted on the mounting frame (6) via a cylinder (7); A limiting mechanism (9) for fixing the battery cell monomer module (4), wherein the limiting mechanism (9) is installed on the detection mechanism (8); A driving mechanism (10) for driving the sliding seat (5) to move.

2. A device for rapidly detecting the remaining capacity of retired batteries according to claim 1, characterized in that: The detection mechanism (8) comprises: A lifting plate (81), the lifting plate (81) being mounted on the output end of the cylinder (7), and a temperature measuring instrument (82) being mounted at the lower end of the lifting plate (81); A connecting member (83), wherein the middle section of the connecting member (83) is inclined and slidably disposed on the lifting plate (81); An adjusting block (84), wherein there are two adjusting blocks (84), and the two adjusting blocks (84) are respectively slidably arranged on both sides of the sliding seat (5), and the adjusting block (84) is fixedly connected to the lower part of the connecting member (83); A charging and discharging connector (85), wherein the charging and discharging connector (85) is mounted on the adjusting block (84), and the charging and discharging connector (85) corresponds to the through opening (3) in the horizontal direction.

3. A device for rapidly detecting the remaining capacity of retired batteries according to claim 1 or 2, characterized in that: The limiting mechanism (9) comprises: A lifting head (91), the lifting head (91) is limitedly slidably disposed on the lifting plate (81), and the lifting head (91) is also placed on both sides of the temperature measuring instrument (82); A spring (92), wherein the upper end of the spring (92) abuts against the lower end of the lifting plate (81), and the lower end of the spring (92) abuts against the lower part of the lifting head (91); An oblique mounting piece (93) is detachably mounted on the lower end of the lifting head (91), and a roller (94) is mounted on the lower end of the oblique mounting piece (93).

4. A device for rapidly detecting the remaining capacity of retired batteries according to claim 3, characterized in that: The two sides of the lower end of the diagonal member (93) are arranged in a non-aligned state in the horizontal direction; The lower end of the inclined member (93) is in a lowered state and corresponds to the explosion-proof groove at the top of the battery cell single module (4); The end of the lower end of the inclined member (93) that is in a raised state corresponds to the ungrooved top of the battery cell single module (4).

5. A device for rapidly detecting the remaining capacity of retired batteries according to claim 3, characterized in that: The axial cross-section of the roller (94) is in the shape of an I-shaped character, and the roller (94) is made of rubber.

6. A device for rapidly detecting the remaining capacity of retired batteries according to claim 1, characterized in that: The driving mechanism (10) comprises: A driving motor (101), wherein the driving motor (101) is mounted on the frame (1); A lead screw (102), one end of which is coaxially mounted on the output end of the drive motor (101), and the other end of which is rotatably mounted on the other side of the groove structure on the frame (1), and the lead screw (102) is threadedly connected to one side of the sliding seat (5).

7. A device for rapidly detecting the remaining capacity of retired batteries according to claim 2, characterized in that: The temperature measuring instrument (82) corresponds to the ungrooved top of the battery cell single module (4) in the vertical direction.

8. A device for rapidly detecting the remaining capacity of retired batteries according to claim 2, characterized in that: The charging and discharging connector (85) is adjustably mounted on the adjusting block (84) via a fastening bolt (11).

9. A device for rapidly detecting the remaining capacity of retired batteries according to claim 2, characterized in that: The upper end of the connecting member (83) is a flat plate structure, on which a plurality of buffer heads (12) are evenly distributed, and the lower ends of the plurality of buffer heads (12) are in contact with the lifting plate (81).

10. A device for rapidly detecting the remaining capacity of retired batteries according to claim 1, characterized in that: The battery tray (2) can be detachably mounted on the frame (1), and a material inlet (13) is provided on the battery tray (2), and the material inlet (13) is connected to the through opening (3).

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