Lithium battery expansion pressure detection device

Abstract

The utility model relates to the technical field of machinery, in particular to a lithium battery expansion pressure detection device which comprises a hinge mechanism, a protection mechanism and a testing mechanism used for testing expansion pressure, the protection mechanism comprises a buffer rubber pad supported on the ground, and an outer frame support used for surrounding is arranged in the middle of the top end of the buffer rubber pad. The surface of the outer frame support is wrapped by a side plate, a machining open groove is formed in the surface of the top of the outer frame support, and a machining cabin used for detecting lithium battery expansion is formed in the groove position surface of the machining open groove. After the groove position state of the machining open groove and the specified machining open groove are closed, the plate face of the bearing plate is closed, and when expansion pressure detection occurs, the observation opening is blocked in time, so that personnel outside a test are safer.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery, in particular to a lithium battery expansion pressure detection device. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as positive / negative electrode materials and non-aqueous electrolyte solutions. In 1912, lithium metal batteries were first proposed and studied by Gilbert N. Lewis. In the 1970s, MS Whittingham proposed and began to study lithium-ion batteries. Due to the very active chemical properties of lithium metal, the processing, storage, and use of lithium metal have very high environmental requirements. With the development of science and technology, lithium batteries have become mainstream.

[0003] Among them, the "A lithium battery extrusion force and expansion pressure detection device" disclosed in the application number "CN201920882950.X" is also an increasingly mature technology, in which "the present application discloses a lithium battery extrusion force and expansion pressure detection device, the detection device includes a support seat, an extrusion plate, a drive assembly, a pressure detection component and a position detection component, at least two extrusion plates are arranged at intervals, and at least one extrusion plate can move relative to the support seat; the drive assembly is connected to at least one extrusion plate and can drive the extrusion plate to move relative to the support seat and the other extrusion plate to squeeze the lithium battery placed between the two extrusion plates; the pressure detection component is used to detect the pressure on the lithium battery; the position detection component is used to detect the relative position of the two extrusion plates moving relative to each other; wherein the extrusion plate is detachably connected to the drive assembly and / or the support seat. The present application can quickly detect the extrusion force and expansion pressure of the lithium battery, can detect and record the initial packaging pressure of the lithium battery and the expansion pressure during the charge and discharge cycle, provide a basis for the selection of fixings, and is conducive to improving the performance and quality of the lithium battery and improving the safety of the use of the lithium battery. ", However, the following defects still exist during the transportation and use of the optical fiber preform:

[0004] At present, during the pressure test of lithium battery expansion pressure, it is generally considered whether the expansion pressure test is safe. Moreover, during the test, it is inevitable to check whether the expansion pressure test process is appropriate. In addition, in the further process of lithium battery expansion pressure test, the pressure test during general circumstances has certain risks, and it is inconvenient to test the expansion pressure of lithium battery at any time. Utility Model Content

[0005] The purpose of the utility model is to provide a lithium battery expansion pressure detection device to solve the problems raised in the above background technology.

[0006] The technical solution of the utility model is: a lithium battery expansion pressure detection device, comprising a hinge mechanism, a protection mechanism and a testing mechanism for testing the expansion pressure;

[0007] The protective mechanism includes a buffer rubber pad supported by the ground, an outer frame bracket for surrounding is provided at the middle of the top end of the buffer rubber pad, the surface of the outer frame bracket is surrounded by side panels, a processing groove is opened on the top surface of the outer frame bracket, a processing cabin for detecting the expansion of the lithium battery is opened on the surface of the slot of the processing groove, and a testing mechanism is installed in the middle of the cabin of the processing cabin.

[0008] As a preferred solution of the utility model: the testing mechanism includes a battery pushing track pushed into the processing cabin, the surface of the battery pushing track is provided with a concave track slider, the surface of the concave track slider is placed with a placement tray for pushing, and a lithium battery limit block is installed above the plate surface of the placement tray through a tightening screw thread.

[0009] As a preferred solution of the utility model: a lithium battery plate is placed on the surface of the pallet, an expansion pressure detection box is provided on the inner surface of the pallet, a lifting and lowering cylinder assembly groove is opened on the side of the box body of the expansion pressure detection box, and a driving cylinder is installed in the groove direction of the lifting and lowering cylinder assembly groove.

[0010] As a preferred solution of the utility model: a connecting rod extends from the bottom of the cylinder body of the driving cylinder, a side plate for downward pressure detection is provided at the bottom of the rod body of the connecting rod, an access base is installed on the side wall surface of the side plate, a connecting block is installed on the surface of the access base, and a convex plate is installed on the surface of the connecting block.

[0011] As a preferred solution of the utility model: the side wall of the convex plate is provided with an L-shaped support sheet, the bottom of the L-shaped support sheet is installed with a square support plate, and a plurality of the square support plates are matched in pairs and vertically opposite to the position where the bottom support plate is placed.

[0012] As a preferred solution of the utility model: a pressure value indicator light is installed at the top corner position of the outer frame bracket, the lamp detection end of the pressure value indicator light corresponds to the surface position of the square support plate, and the front surface of the processing cabin is also covered with a hinge mechanism, and the hinge mechanism includes an articulated roller shaft arranged on the side wall of the processing groove, and a trapezoidal cover is installed on the side of the articulated roller shaft.

[0013] As a preferred solution of the utility model: the side wall of the trapezoidal cover is provided with a square groove, the groove surface of the square groove is fitted with a transparent support plate, the cover connecting end of the trapezoidal cover is inclinedly provided with an outer frame, the back of the outer frame is provided with a fitting pad, and one end of the fitting pad is supported by a bearing plate arranged on the front surface of the outer frame bracket.

[0014] As a preferred solution of the utility model: a control terminal is installed on the top side of the outer frame bracket.

[0015] 1) Through the hinged state of the side plate hinged fitting pad plate surface, the upper processing slot is blocked or closed. After the slot state of the processing slot is closed with the designated processing slot, the plate surface of the load-bearing plate is closed. When the expansion pressure test occurs, the observation port is blocked in time to make the personnel outside the test safer. The pressure value indicator light is used to detect the specific expansion and contraction pressure of the two independent drive cylinders and the strength of the extrusion and expansion force on the battery;

[0016] 2) The L-shaped support sheet and the square support plate at the front end are matched to realize the clamping match of the corresponding lithium battery plate below. The load-bearing plate and the corresponding processed slots are flipped and closed, and the slots are processed. The pressure value prompt light and the control terminal are combined in the lithium battery expansion pressure link as the space processed slots are closed and matched. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a side structural schematic diagram of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the hinged roller shaft of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the lithium battery limit block of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the testing mechanism of the utility model;

[0023] Figure 6 It is a schematic diagram of the square support plate structure of the utility model.

[0024] In the figure: 1, articulated mechanism; 11, articulated roller; 12, trapezoidal cover; 13, square slot; 14, transparent support plate; 15, outer frame; 16, fitting pad; 17, bearing plate;

[0025] 2. Protective mechanism; 21. Buffer rubber pad; 22. External frame bracket; 23. First side plate; 24. Processing slot; 25. Processing cabin; 26. Pressure value indicator light; 27. Control terminal;

[0026] 3. Testing mechanism; 31. Battery push track; 32. Concave track slider; 33. Placement tray; 34. Lithium battery limit block; 35. Lithium battery board; 36. Expansion pressure detection box; 37. Lifting and lowering cylinder assembly groove; 38. Driving cylinder; 39. Connecting pole; 391. Second side plate; 392. Access base; 393. Connecting block; 394. Convex plate; 395. L-shaped support sheet; 396. Square tray. DETAILED DESCRIPTION

[0027] The utility model is described in detail below, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The utility model provides a lithium battery expansion pressure detection device through improvement. The technical solution of the utility model is:

[0029] like Figure 1 - Figure 6 As shown, a lithium battery expansion pressure detection device comprises a hinge mechanism 1, a protection mechanism 2 and a testing mechanism 3 for testing the expansion pressure;

[0030] The protection mechanism 2 includes a buffer rubber pad 21 supported by the ground, an outer frame bracket 22 for surrounding is provided at the middle of the top end of the buffer rubber pad 21, the surface of the outer frame bracket 22 is surrounded by a first side plate 23, a processing groove 24 is provided on the top surface of the outer frame bracket 22, a processing chamber 25 for detecting the expansion of the lithium battery is provided on the groove surface of the processing groove 24, and a testing mechanism 3 is installed in the middle of the chamber of the processing chamber 25.

[0031] In this embodiment: the testing mechanism 3 includes a battery pushing rail 31 pushed into the processing chamber 25, the surface of the battery pushing rail 31 is provided with a concave rail slider 32, the surface of the concave rail slider 32 is placed with a placement tray 33 for pushing, and a lithium battery limit block 34 is installed above the plate surface of the placement tray 33 through a tightening screw thread.

[0032] The battery position change is achieved by using the battery pushing track 31 and the specific concave track slider 32 to push each other.

[0033] In this embodiment: a lithium battery plate 35 is placed on the surface of the support plate 33, an expansion pressure detection box 36 is provided on the inner surface of the support plate 33, a lifting and lowering cylinder assembly groove 37 is opened on the side of the box body of the expansion pressure detection box 36, and a driving cylinder 38 is installed in the groove direction of the lifting and lowering cylinder assembly groove 37.

[0034] By adopting the placement of the support plate 33 and the expansion pressure detection box 36, in terms of the protection detection scheme, the box body of the expansion pressure detection box 36 is used as a closed space to implement the extrusion expansion test of the lithium battery.

[0035] In this embodiment: a connecting rod 39 extends from the bottom of the cylinder body of the driving pressure cylinder 38, and a second side plate 391 for downward pressure detection is provided at the bottom of the rod body of the connecting rod 39, and an access base 392 is installed on the side wall surface of the second side plate 391, and a connecting block 393 is installed on the surface of the access base 392, and a convex plate 394 is installed on the surface of the connecting block 393.

[0036] The driving cylinder 38 and the rod structure connecting the vertical rod 39 move downward so that the extended position directly generates the power of extrusion force.

[0037] In this embodiment: the side wall of the protruding plate 394 is provided with an L-shaped supporting piece 395, and a square supporting plate 396 is installed at the bottom of the L-shaped supporting piece 395. A plurality of square supporting plates 396 are matched in pairs and are vertically opposite to the position where the supporting plate 33 is placed at the bottom.

[0038] By matching the L-shaped support sheet 395 with the specific square support plate 396, the power of the extrusion cylinder will be transmitted to the position of the square support plate 396, and the area of ​​the square support plate 396 will contact the lithium battery plate 35 to complete the conversion of pressure power.

[0039] In this embodiment: a pressure value indication light 26 is installed at the top corner position of the outer frame bracket 22, and the lamp detection end of the pressure value indication light 26 corresponds to the surface position of the square support plate 396. The front surface of the processing cabin 25 is also covered with an articulated mechanism 1, and the articulated mechanism 1 includes an articulated roller shaft 11 arranged on the side wall of the processing groove 24, and a trapezoidal cover 12 is installed on the side of the articulated roller shaft 11.

[0040] By cooperating with the articulated roller shaft 11 and the trapezoidal cover 12, the adaptation in the storage position of the corresponding processing cabin 25 is further achieved.

[0041] In this embodiment: a square slot 13 is provided on the side wall of the trapezoidal cover 12, a transparent support plate 14 is fitted on the slot surface of the square slot 13, an outer frame 15 is obliquely provided on the cover connecting end of the trapezoidal cover 12, a fitting pad 16 is provided on the back of the outer frame 15, and one end of the fitting pad 16 is supported by a bearing plate 17 arranged on the front surface of the outer frame bracket 22.

[0042] The outer frame 15 and the fitting pad 16 are matched to achieve the adaptive support of the fitting pad 16.

[0043] In this embodiment, a control terminal 27 is installed on the top side of the outer frame bracket 22 .

[0044] As the coordinated control of various components.

[0045] When using it, step 1: put in the lithium battery to be tested;

[0046] In the initial state, the axial transmission of the articulated roller shaft 11 is first articulated, and the cover connection state of the trapezoidal cover 12 is used to coordinate the trapezoidal cover 12 to the designated processing slot 24 area, and the axial rotation and flipping of the articulated roller shaft 11 are used to close the slot position of the square slot 13. Then, the cylinder body of the driving pressure cylinder 38 is extended and retracted to correspond to the position of the connecting rod 39 to achieve up and down lifting. At this time, the user adjusts the plate surface of the second side plate 391 to move downward based on the cylinder body of the driving pressure cylinder 38 After the cylinder body is extended and retracted, after moving downward, the second side plate 391 is connected to the base 392. The area is fixed. After the fit is achieved, the convex plate 394 area is lifted based on the seat connected to the base 392, and the corresponding L-shaped support sheet 395 area is used to fit the square support plate 396 below. The area based on the L-shaped support sheet 395 will synchronously drive the square support plate 396 below to move downward. When moving downward, the surface placement of the lithium battery board 35 will be controlled. Based on the forward and backward sliding displacement of the battery push track 31, the square support plate 396 will be supported according to the board load state.

[0047] Step 2: As a lithium battery expansion pressure test;

[0048] At this time, after the surface of the square support plate 396 corresponding to the pressure link is squeezed, the interval area after the downward movement of the battery pushing track 31 is pressed against the lithium battery plate 35 for pressure detection. The square support plate 396 is in the lifting state. At this moment, the lithium battery plate 35 will further achieve the corresponding square support plate 396 after the power of the pressure cylinder is lifted. At this time, the user uses the surface of the lithium battery plate 35 for pressure testing. During the pressure test, the concave track slider 32 below is pushed and moved back and forth to reach the specific battery surface. After pressurization, the battery status is observed;

[0049] Step 3: Stress test:

[0050] At this time, the personnel observed that in order to prevent the battery from exploding after reaching a certain pressure, the personnel quickly closed the trapezoidal cover 12. After the trapezoidal cover 12 was closed, the outer frame 15 was turned over and pressed against the surface of the carrier plate 17. After pressing against the outer frame 15, the personnel directly viewed through the square slot 13 to see whether the placed lithium battery board 35 met the standard.

[0051] The personnel operating the control terminal 27 determines the force under which the lithium battery is compressed in combination with the light change of the pressure value indicator light 26. In addition, the battery pushing track 31 in the scheme regulates the forward and backward displacement of the track on the surface.

Claims

1. A lithium battery expansion pressure detection device, comprising a hinge mechanism (1), a protection mechanism (2) and a testing mechanism (3) for testing the expansion pressure; Features: The protection mechanism (2) comprises a buffer rubber pad (21) supported by the ground, an outer frame bracket (22) for surrounding is provided at the middle of the top end of the buffer rubber pad (21), the surface of the outer frame bracket (22) is surrounded by a first side plate (23), a processing groove (24) is provided on the top surface of the outer frame bracket (22), a processing chamber (25) for detecting the expansion of the lithium battery is provided on the groove surface of the processing groove (24), and a testing mechanism (3) is installed in the middle of the chamber of the processing chamber (25).

2. A lithium battery expansion pressure detection device according to claim 1, characterized in that: The testing mechanism (3) comprises a battery pushing track (31) pushed into the processing chamber (25), the surface of the battery pushing track (31) is provided with a concave track slider (32), the surface of the concave track slider (32) is provided with a placement support plate (33) for pushing, and a lithium battery limit block (34) is installed above the plate surface of the placement support plate (33) through a tightening screw thread.

3. A lithium battery expansion pressure detection device according to claim 2, characterized in that: A lithium battery plate (35) is placed on the surface of the placement support plate (33), and an expansion pressure detection box (36) is provided on the plate surface of the placement support plate (33) located inside. A lifting cylinder assembly groove (37) is provided on the side of the box body of the expansion pressure detection box (36), and a driving cylinder (38) is installed in the groove direction of the lifting cylinder assembly groove (37).

4. A lithium battery expansion pressure detection device according to claim 3, characterized in that: A connecting rod (39) extends from the bottom of the cylinder body of the driving pressure cylinder (38), and a second side plate (391) for downward pressure detection is provided at the bottom of the rod body of the connecting rod (39), and an access base (392) is installed on the side wall surface of the second side plate (391), and a connecting block (393) is installed on the surface of the access base (392), and a convex plate (394) is installed on the surface of the connecting block (393).

5. A lithium battery expansion pressure detection device according to claim 4, characterized in that: The side wall of the convex plate (394) is provided with an L-shaped support plate (395), and the bottom of the L-shaped support plate (395) is installed with a square support plate (396). A plurality of square support plates (396) are matched with each other and are vertically opposite to the position where the support plate (33) is placed at the bottom.

6. A lithium battery expansion pressure detection device according to claim 1, characterized in that: A pressure value indication light (26) is installed at the top corner of the outer frame bracket (22), and the lamp detection end of the pressure value indication light (26) corresponds to the surface position of the square support plate (396). The front surface of the processing cabin (25) is also covered with an articulated mechanism (1), and the articulated mechanism (1) includes an articulated roller shaft (11) arranged on the side wall of the processing groove (24), and a trapezoidal cover (12) is installed on the side of the articulated roller shaft (11).

7. A lithium battery expansion pressure detection device according to claim 6, characterized in that: The side wall of the trapezoidal cover (12) is provided with a square slot (13), the slot surface of the square slot (13) is fitted with a transparent support plate (14), the cover connection end of the trapezoidal cover (12) is obliquely provided with an outer frame (15), the back of the outer frame (15) is provided with a fitting pad (16), and one end of the fitting pad (16) is supported by a bearing plate (17) arranged on the front surface of the outer frame bracket (22).

8. A lithium battery expansion pressure detection device according to claim 1, characterized in that: A control terminal (27) is installed on the top side of the outer frame bracket (22).

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