New energy lithium battery automatic test device

Abstract

The invention relates to the technical field of lithium batteries, in particular to a new energy lithium battery automatic testing device which comprises a testing machine, the front surface of the testing machine is provided with a containing cavity used for fixing and testing a lithium battery, the bottom of the containing cavity is provided with a fixing assembly used for fixing the lithium battery, and the top end of the containing cavity is provided with a testing mechanism. According to the new energy lithium battery automatic test device provided by the invention, the clamping plate and the test platform are in a mutually horizontal state in an initial state, so that the blocking of the clamping plate to the internal space of the accommodating cavity is reduced, and a user can directly place the battery on the test platform conveniently; when the electric push rod is controlled to extend to push and drive the clamping plate to approach the battery, the gear ring arranged on the clamping plate walks on the toothed plate, the clamping plate is automatically driven to rotate to be perpendicular to the test platform, and the battery is automatically clamped and fixed.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium batteries, in particular to an automatic testing device for new energy lithium batteries. Background Art

[0002] In our lives, new energy vehicles have become a common means of transportation, greatly reducing air pollution in our environment. New energy lithium batteries are a common battery in modern society, generally used as driving energy for cars. Usually, several lithium batteries are neatly arranged and fixed in a pre-prepared shell, and then the fixed lithium batteries are connected in series and packaged. It has the advantages of stable discharge voltage and long storage time. New energy lithium batteries need to go through layers of testing and testing. During the test, all processes must be tested to know whether the battery is safe to install in the car. Battery safety is very important in new energy vehicles, so it must be strictly controlled. The battery must be resistant to high temperature, extrusion, explosion and short circuit.

[0003] At present, when testing new energy lithium batteries, including battery extrusion and puncture tests, it simulates the situation where the battery is deformed or punctured under the action of external force. At present, when the battery is subjected to extrusion and puncture tests, because the battery may burn or even explode during the extrusion and puncture tests, a chamber is generally set up to accommodate the battery, and a protective door is used for protection. In the existing lithium battery safety test, the assembled lithium battery is basically placed on the test platform, and then manually positioned and fixed with a clamp. The space in a single chamber is small, which makes manual fixation more troublesome, reducing the test efficiency of new energy lithium batteries. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a new energy lithium battery automatic testing device.

[0005] The present invention adopts the following technical scheme: an automatic testing device for new energy lithium batteries, comprising a testing machine, wherein a receiving cavity for fixing and testing lithium batteries is provided on the front surface of the testing machine, a fixing assembly for fixing lithium batteries is provided at the bottom of the receiving cavity, and a testing mechanism is provided at the top of the receiving cavity;

[0006] The fixing assembly comprises a disc-shaped test platform, the bottom end of which is fixedly mounted on the inner bottom plate of the accommodating cavity by four mounting blocks, the four mounting blocks are distributed in a circular shape with equal spacing, a rectangular through hole is provided on the upper surface of the test platform at the gap between two adjacent mounting blocks, two strip-shaped slide grooves are symmetrically provided on the upper surface of the test platform at both sides of the rectangular through hole, a first slider is slidably connected in the two strip-shaped slide grooves, a base is welded on the upper part of the two first sliders, a clamping plate is rotatably connected between the two bases by an axis, a gear ring is provided at one end of the clamping plate, a concave gear plate is welded between the two bases on the test platform, the concave gear plate is meshed with the gear ring gear, a fixing block is installed on the fixing assembly, an electric push rod is installed on the fixing block, and the electric push rod is fixedly connected to the base;

[0007] A supporting component is arranged in the rectangular through hole, and the supporting component is used for auxiliary support of the clamping plate. A circular hole is formed between the strip slide groove and the rectangular through hole, and a locking component is arranged in the circular hole.

[0008] As a further description of the above technical solution: the support assembly includes two limit plates, the two limit plates are welded and fixed on the two side walls of the rectangular through hole along the length direction, a support plate is rotatably connected between the two limit plates through a rotating shaft, and arc-shaped slide grooves are provided on opposite sides of the two limit plates, a second slider is welded on the outer wall of the support plate, the second slider is slidably connected to the arc-shaped slide groove, and a first spring is welded between the second slider and the inner wall of the arc-shaped slide groove.

[0009] As a further description of the above technical solution: the locking assembly is used to limit and lock the support plate, and the locking assembly includes a positioning pin, a protrusion and a second spring. The positioning pin is inserted into the circular hole, one end of which extends into the strip slide and is welded with a protrusion, and a second spring is welded between the protrusion and the inner wall of the strip slide, and a positioning hole for cooperating with the positioning pin is opened on the support plate.

[0010] As a further description of the above technical solution: a protective door is slidably connected to the opening of the front surface of the accommodating cavity, an explosion-proof glass is embedded on the protective door, and an electric telescopic rod for driving the protective door to move is installed on the side wall of the testing machine.

[0011] As a further description of the above technical solution: the testing mechanism includes a first hydraulic telescopic rod embedded in the top center of the accommodating cavity, a fixed shaft is welded to the bottom end of the first hydraulic telescopic rod, and an extrusion plate is welded to the bottom end of the fixed shaft.

[0012] As a further description of the above technical solution: a fixing ring is welded on the fixed shaft above the extrusion plate, a movable ring is sleeved on the fixed shaft between the extrusion plate and the fixed ring, a puncture steel needle is welded on the bottom end of the movable ring, a second hydraulic telescopic rod is bolted to the lower surface of the fixed ring, and the bottom end of the second hydraulic telescopic rod is fixedly connected to the movable ring, and a circular hole is opened on the extrusion plate for use with the puncture steel needle.

[0013] As a further description of the above technical solution: the width of the clamping plate is greater than the width of the rectangular through hole.

[0014] In the above technical scheme, the present invention provides a new energy lithium battery automatic testing device, in which the clamping plate is in a mutually horizontal state with the test platform in the initial state, reducing the shielding of the clamping plate on the internal space of the accommodating cavity, so that the user can directly place the battery on the test platform. When the battery is fixed, the electric push rod is controlled to extend and push the clamping plate to approach the battery, and the clamping plate automatically rotates to a state in which it is vertical to the test platform through the gear ring set on the clamping plate, so as to realize automatic clamping and fixing of the battery;

[0015] Furthermore, when the clamping plate rotates to a vertical state, under the elastic force of the first spring, the second slider is pushed to slide in the arc-shaped slide groove, thereby driving the support plate to rotate, so that one side wall of the support plate abuts against the clamping plate, and the first slider abuts and pushes the positioning pin to move, so that the positioning pin is inserted into the positioning hole opened on the support plate to position the support plate, thereby improving the strength of the support plate, improving the supporting effect of the support plate on the clamping plate, and improving the explosion-proof clamping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments:

[0017] Figure 1 A schematic diagram of the structure of an automatic testing device for new energy lithium batteries provided by an embodiment of the present invention;

[0018] Figure 2 A front view of a new energy lithium battery automatic testing device provided by an embodiment of the present invention;

[0019] Figure 3 A schematic diagram of the structure of a fixing assembly provided in an embodiment of the present invention;

[0020] Figure 4 A schematic diagram of the connection structure between the clamping plate and the base provided in an embodiment of the present invention;

[0021] Figure 5 A cross-sectional view of a fixing assembly provided in an embodiment of the present invention Figure 1 ;

[0022] Figure 6 A cross-sectional view of a fixing assembly provided in an embodiment of the present invention Figure 2 ;

[0023] Figure 7 The embodiment of the present invention provides Figure 6 A magnified view of area B in FIG.

[0024] Figure 8 A schematic diagram of the structure of a locking assembly provided in an embodiment of the present invention;

[0025] Fig. 9 A schematic diagram of the structure of a support plate provided in an embodiment of the present invention;

[0026] Fig.10 The embodiment of the present invention provides Figure 1 Magnified view of area A in .

[0027] In the figure: 1. testing machine; 2. accommodating chamber; 3. fixing assembly; 31. testing platform; 32. mounting block; 33. rectangular through hole; 34. strip slide; 341. positioning pin; 342. protrusion; 343. second spring; 35. first slider; 36. base; 37. clamping plate; 38. concave tooth plate; 39. gear ring; 310. electric push rod; 311. fixing block; 312. limit plate; 313. support plate; 314. positioning hole; 315. rotating shaft; 316. arc slide; 317. second slider; 318. first spring; 4. testing mechanism; 41. first hydraulic telescopic rod; 42. fixed shaft; 43. extrusion plate; 44. fixing ring; 45. movable ring; 46. second hydraulic telescopic rod; 47. puncture needle; 5. protective door; 51. electric telescopic rod. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below with reference to specific diagrams. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0029] See also Figure 1-Figure 10 The embodiment of the present invention provides a technical solution: an automatic testing device for new energy lithium batteries, comprising a testing machine 1, a front surface of the testing machine 1 is provided with a receiving chamber 2 for fixing and testing lithium batteries, a bottom of the receiving chamber 2 is provided with a fixing assembly 3 for fixing lithium batteries, and a top of the receiving chamber 2 is provided with a testing mechanism 4;

[0030] The fixing assembly 3 includes a disc-shaped test platform 31, the bottom end of which is fixedly mounted on the inner bottom plate of the accommodating chamber 2 through four mounting blocks 32, the four mounting blocks 32 are distributed in a circular manner with equal spacing, a rectangular through hole 33 is provided on the upper surface of the test platform 31 at the gap between two adjacent mounting blocks 32, two strip-shaped slide grooves 34 are symmetrically provided on the upper surface of the test platform 31 on both sides of the rectangular through hole 33, a first slider 35 is slidably connected in the two strip-shaped slide grooves 34, a base 36 is welded on the upper part of the two first sliders 35, a clamping plate 37 is rotatably connected between the two bases 36 through an axis, a gear ring 39 is provided at one end of the clamping plate 37, a concave tooth plate 38 is welded between the two bases 36 on the test platform 31, and the concave tooth plate 38 is meshed with the gear ring 39, a fixing block 311 is installed on the fixing assembly 3, an electric push rod 310 is installed on the fixing block 311, and the electric push rod 310 is fixedly connected to the base 36;

[0031] A supporting component is arranged in the rectangular through hole 33 , and the supporting component is used to provide auxiliary support to the clamping plate 37 . A circular hole is provided between the strip slide 34 and the rectangular through hole 33 , and a locking component is arranged in the circular hole. The width of the clamping plate 37 is greater than that of the rectangular through hole 33 .

[0032] Specifically, when this new energy lithium battery automatic testing device is in use, in the initial state, the clamp 37 is in a horizontal state, reducing the shielding of the clamp 37 on the inside of the accommodating chamber 2, making it convenient for the user to place the battery directly on the test platform 31. The user places the lithium battery to be tested on the test platform 31, between the four clamping plates 37. When fixing the battery, the electric push rod 310 is controlled to extend and push the clamp 37 closer to the battery. The gear ring 39 set on the clamp 37 walks on the concave gear plate 38, automatically driving the clamp 37 to rotate to a state that is vertical to the test platform 31, thereby realizing automatic clamping and fixing of the battery.

[0033] In another embodiment provided by the present invention, the support assembly includes two limit plates 312, and the two limit plates 312 are welded and fixed on the two side walls of the rectangular through hole 33 along the length direction. The two limit plates 312 are rotatably connected with a support plate 313 through a rotating shaft 315. The two limit plates 312 have arc-shaped slide grooves 316 on opposite sides. A second slider 317 is welded on the outer wall of the support plate 313, and the second slider 317 is slidably connected to the arc-shaped slide groove 316, and a first spring 318 is welded between the second slider 317 and the inner wall of the arc-shaped slide groove 316.

[0034] Specifically, based on the above embodiment, when the clamp 37 slowly rotates to a state where it is perpendicular to the test platform 31, the clamp no longer squeezes the support plate 313. Under the elastic force of the first spring 318, the second slider 317 is pushed to slide in the arc-shaped slide groove 316, so that the support plate 313 rotates around the rotation axis 315, and the support plate 313 abuts against the side wall of the clamp 37.

[0035] In another embodiment provided by the present invention, the locking assembly is used to limit and lock the support plate 313, and the locking assembly includes a positioning pin 341, a protrusion 342 and a second spring 343. The positioning pin 341 is inserted into the circular hole, one end of which extends into the strip slide groove 34 and is welded with a protrusion 342, and a second spring 343 is welded between the protrusion 342 and the inner wall of the strip slide groove 34, and a positioning hole 314 used in conjunction with the positioning pin 341 is opened on the support plate 313.

[0036] Specifically, on the basis of the above-mentioned embodiment, when the support plate 313 abuts against the side wall of the clamping plate 37, when the control electric push rod 310 is extended to drive the first slider 35 to move in the strip slide groove 34, the positioning pin 341 is squeezed by the first slider 35, the second spring 343 contracts, and the positioning pin 341 moves and is inserted into the positioning hole 314, thereby limiting and fixing the support plate 313, thereby ensuring the supporting strength of the support plate 313, improving the supporting effect of the support plate 313 on the clamping plate 37, and improving the explosion-proof clamping effect of the clamping plate 37.

[0037] In another embodiment provided by the present invention, a protective door 5 is slidably connected to the opening of the front surface of the accommodating chamber 2, and an explosion-proof glass is embedded on the protective door 5. An electric telescopic rod 51 for driving the protective door 5 to move is installed on the side wall of the testing machine 1.

[0038] Specifically, based on the above embodiment, when the lithium battery to be tested is placed on the test platform 31 for testing, the electric telescopic rod 51 is controlled to retract, the protective door 5 is pulled to move, and the protective door 5 is driven to cover the opening on the front surface of the accommodating chamber 2, thereby improving the safety of the lithium battery test.

[0039] In another embodiment provided by the present invention, the testing mechanism 4 includes a first hydraulic telescopic rod 41 embedded in the top center of the accommodating chamber 2, a fixed shaft 42 is welded to the bottom end of the first hydraulic telescopic rod 41, an extrusion plate 43 is welded to the bottom end of the fixed shaft 42, a fixed ring 44 is welded to the fixed shaft 42 above the extrusion plate 43, a movable ring 45 is sleeved on the fixed shaft 42 between the extrusion plate 43 and the fixed ring 44, a puncture steel needle 47 is welded to the bottom end of the movable ring 45, a second hydraulic telescopic rod 46 is bolted to the lower surface of the fixed ring 44, and the bottom end of the second hydraulic telescopic rod 46 is fixedly connected to the movable ring 45, and a circular hole for matching with the puncture steel needle 47 is opened on the extrusion plate 43.

[0040] Specifically, on the basis of the above embodiment, after the lithium battery to be tested is placed on the test platform 31 and fixed, the opening on the front surface of the accommodating chamber 2 is blocked by the protective door 5. At this time, the lithium battery can be subjected to an extrusion puncture test. When the extrusion test is performed, the first hydraulic telescopic rod 41 is controlled to move downward to drive the extrusion plate 43 to perform an extrusion test on the lithium battery. When the puncture test is performed, the second hydraulic telescopic rod 46 is controlled to extend to drive the movable ring 45 downward so that the puncture steel needle 47 arranged at the bottom end of the movable ring 45 penetrates the extrusion plate 43 and extends to the outside.

[0041] The basic principles, main features and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and the description in the specification are only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A new energy lithium battery automatic testing device, comprising a testing machine (1), wherein the front surface of the testing machine (1) is provided with a receiving cavity (2) for fixing and testing the lithium battery, and characterized in that: A fixing assembly (3) for fixing the lithium battery is arranged at the bottom of the accommodating cavity (2), and a testing mechanism (4) is arranged at the top of the accommodating cavity (2); The fixing assembly (3) comprises a disc-shaped test platform (31), the bottom end of the test platform (31) is fixed on the inner bottom plate of the accommodating cavity (2) through four mounting blocks (32), the four mounting blocks (32) are distributed in a circular shape with equal spacing, a rectangular through hole (33) is provided on the upper surface of the test platform (31) at the gap between two adjacent mounting blocks (32), two strip-shaped slide grooves (34) are symmetrically provided on the upper surface of the test platform (31) at both sides of the rectangular through hole (33), and a first slider (35) is slidably connected in the two strip-shaped slide grooves (34), A base (36) is welded to the upper part of the two first sliding blocks (35), a clamping plate (37) is rotatably connected between the two bases (36) via an axis, a gear ring (39) is arranged at one end of the clamping plate (37), a concave toothed plate (38) is welded between the two bases (36) on the test platform (31), the concave toothed plate (38) is gear-engaged with the gear ring (39), a fixing block (311) is installed on the fixing assembly (3), an electric push rod (310) is installed on the fixing block (311), and the electric push rod (310) is fixedly connected to the base (36); A support component is arranged in the rectangular through hole (33), and the support component is used to provide auxiliary support for the clamping plate (37). A circular hole is provided between the strip-shaped slide groove (34) and the rectangular through hole (33), and a locking component is arranged in the circular hole.

2. The automatic testing device for new energy lithium batteries according to claim 1 is characterized in that: The support assembly comprises two limit plates (312), the two limit plates (312) are welded and fixed on the two side walls of the rectangular through hole (33) along the length direction, the two limit plates (312) are rotatably connected with the support plate (313) via a rotating shaft (315), the two limit plates (312) are provided with an arc-shaped slide groove (316) on opposite sides, a second slider (317) is welded on the outer wall of the support plate (313), the second slider (317) is slidably connected to the arc-shaped slide groove (316), and a first spring (318) is welded between the second slider (317) and the inner wall of the arc-shaped slide groove (316).

3. The automatic testing device for new energy lithium batteries according to claim 2 is characterized in that: The locking assembly is used to limit and lock the support plate (313), and the locking assembly includes a positioning pin (341), a protrusion (342) and a second spring (343). The positioning pin (341) is inserted into a circular hole, one end of which extends into the strip slide groove (34) and is welded with a protrusion (342). The second spring (343) is welded between the protrusion (342) and the inner wall of the strip slide groove (34). The support plate (313) is provided with a positioning hole (314) used in conjunction with the positioning pin (341).

4. The automatic testing device for new energy lithium batteries according to claim 1 is characterized in that: A protective door (5) is slidably connected to the front opening of the accommodating chamber (2), and explosion-proof glass is embedded in the protective door (5). An electric telescopic rod (51) for driving the protective door (5) to move is installed on the side wall of the testing machine (1).

5. The automatic testing device for new energy lithium batteries according to claim 1 is characterized in that: The testing mechanism (4) comprises a first hydraulic telescopic rod (41) embedded in the top center of the accommodating cavity (2), a fixed shaft (42) is welded to the bottom end of the first hydraulic telescopic rod (41), and an extrusion plate (43) is welded to the bottom end of the fixed shaft (42).

6. The automatic testing device for new energy lithium batteries according to claim 5, characterized in that: A fixing ring (44) is welded on the fixed shaft (42) above the extrusion plate (43); a movable ring (45) is sleeved on the fixed shaft (42) between the extrusion plate (43) and the fixing ring (44); a puncture needle (47) is welded to the bottom end of the movable ring (45); a second hydraulic telescopic rod (46) is bolted to the lower surface of the fixing ring (44), and the bottom end of the second hydraulic telescopic rod (46) is fixedly connected to the movable ring (45); a circular hole for cooperating with the puncture needle (47) is opened on the extrusion plate (43).

7. The automatic testing device for new energy lithium batteries according to claim 1, characterized in that: The width of the clamping plate (37) is greater than the width of the rectangular through hole (33).

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