Charging and discharging tester of dilute gel power battery for electric vehicle

Abstract

The invention relates to the technical field of battery testing, and provides a charging and discharging tester of a dilute gel power battery for an electric vehicle, the charging and discharging tester comprises a testing frame, a plug connector module, a driving module, a feeding module, a clamping piece and a charging and discharging integration module, the testing frame is provided with a feeding platform and an anti-explosion bin, and a plug connector in the plug connector module is fixedly connected with a lifting piece; the charging and discharging integrated module is electrically connected with the plug connector, the threaded pipe is connected with the surface of the anti-explosion bin, the threaded rod is connected between the lifting piece and the threaded pipe, the gear is fixedly connected with the threaded pipe, a rack and a pressing strip are fixedly arranged on the surface of a special-shaped frame in the driving module, and the gear is in transmission connection with the rack. An L-shaped frame in the feeding module is slidably connected between a feeding platform and an anti-explosion bin, a first spring is connected between the L-shaped frame and a testing frame, a special-shaped frame can make contact with the surface of the L-shaped frame, a clamping piece comprises a first wedge-shaped block, a pressing strip makes contact with the surface of the first wedge-shaped block in a sliding mode, and the device has the advantages that the electromechanical structure is simplified, structural matching is ingenious, and the maintenance cost is low.

Description

Technical Field

[0001] The invention relates to the technical field of battery testing, in particular to a charge and discharge tester for a dilute gel power battery for electric vehicles. Background Art

[0002] After searching, the announcement number CN114594376B discloses a retired power battery charge and discharge test device, including an explosion-proof box and a test mechanism for performing charge and discharge tests on the power battery. The top wall of the explosion-proof box is provided with an opening, and a test bench is rotatably installed in the opening; the present invention drives the test bench to rotate by a driving mechanism, so that the power battery is flipped into the explosion-proof box, and then the power battery is charged and discharged by the test mechanism. During the charge and discharge test, another retired power battery is placed on the fixing mechanism on the other side of the test bench to improve the test efficiency. After the test is completed, the test bench is rotated in the opposite direction to allow another retired power battery to enter the explosion-proof box for testing. Under the explosion-proof effect of the explosion-proof box, even if the retired power battery explodes during the test, the fragments generated by the explosion will be blocked by the explosion-proof box and the test bench, and will not cause harm to the tester and the test mechanism, and the safety during the test is relatively high.

[0003] Although the battery charge and discharge test device disclosed above has certain automation capabilities, it still has the following defects: (1) Considering that the dilute gel power battery may release gas during the charge and discharge test, it is impossible to actively protect and determine the cause of the fault by actively monitoring the gas parameters; (2) There is a lot of manual participation and low efficiency. For example, the position adjustment of the conductive sheet requires manual sliding guide rails; (3) Although the battery tester in the prior art can also achieve the functions of separate loading, clamping positioning, and charge and discharge testing by using multiple cylinders, there are problems of high procurement costs and complex operation and maintenance.

[0004] In summary, there is still an urgent need for a charge and discharge tester for dilute gel power batteries that can actively monitor gas parameters for active protection and determine the cause of faults, while reducing costs and improving test efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a charge and discharge tester for a dilute gel power battery for an electric vehicle, aiming to solve the problems existing in existing battery charge and discharge test devices.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a charge and discharge tester for a dilute gel power battery for electric vehicles, comprising a test stand and a charge and discharge integrated module, wherein the test stand is provided with a loading platform and an explosion-proof chamber, and further comprising: A plug connector module, comprising a plug connector, a lifting member, a threaded tube, a gear, and a threaded rod. Both of the plug connectors are fixedly connected to the lifting member. The charging and discharging integrated module is electrically connected to the plug connector. The threaded tube is connected to the surface of the explosion-proof bin. One end of the threaded rod is fixedly connected to the lifting member. The other end of the threaded rod is threadedly connected to the threaded tube. The gear is fixedly connected to the threaded tube. A driving module, comprising a telescopic cylinder, a special-shaped frame, a rack and a pressure strip, wherein one end of the telescopic cylinder is fixedly connected to the test frame, and the special-shaped frame is fixedly connected to the other end of the telescopic cylinder. A rack and a pressure strip are fixedly provided on the surface of the special-shaped frame, and the gear can be transmission-connected to the rack; A loading module, comprising an L-shaped frame and a first spring, wherein the L-shaped frame is slidably connected between the loading platform and the explosion-proof bin, the first spring is connected between the L-shaped frame and the test frame, and the special-shaped frame is capable of contacting the surface of the L-shaped frame; A clamping piece is arranged on the surface of the explosion-proof warehouse, and the clamping piece includes a No. 1 wedge block. The pressure strip can be in sliding contact with the surface of the No. 1 wedge block.

[0007] As a further solution of the present invention, it also includes a blanking piece, which includes a No. 2 wedge block, a pin rod and a third spring. The No. 2 wedge block is fixedly connected to the pin rod. The surfaces of the explosion-proof warehouse and the L-shaped frame are respectively provided with limiting holes and longitudinal grooves. The No. 2 wedge block passes through the limiting hole. The third spring is sleeved on the surface of the pin rod. The inclined surface of the No. 2 wedge block faces away from the inner side of the explosion-proof warehouse, and the No. 2 wedge block can enter the longitudinal groove.

[0008] As a further solution of the present invention, the clamping member also includes a clamping block, a sliding rod and a second spring. A sliding rod is fixedly connected between the No. 1 wedge block and the clamping block. The sliding rod passes through the explosion-proof warehouse, and the second spring is sleeved on the surface of the sliding rod.

[0009] As a further solution of the present invention, a No. 1 boss and a No. 2 boss are respectively provided at both ends of the L-shaped frame, the special-shaped frame can contact the surface of the No. 1 boss, and the first spring is connected between the No. 2 boss and the test frame.

[0010] As a further solution of the present invention, the test stand is also provided with a material unloading area and a test equipment placement area, the explosion-proof warehouse is connected to the material unloading area, and the test equipment placement area is fixedly connected to a charging and discharging integrated module, a heat dissipation system and a control display.

[0011] As a further solution of the present invention, the heat dissipation system includes an air circulation heat dissipation module, an air inlet pipe and an air outlet pipe. The air circulation heat dissipation module includes a circulation pump body, a detection chamber, a gas sensor, a purification chamber, an air inlet and an air outlet. The outside air enters the explosion-proof warehouse through the air inlet, the circulation pump body and the air inlet pipe. The air in the explosion-proof warehouse is discharged through the air outlet pipe, the circulation pump body, the detection chamber, the purification chamber and the air outlet. The gas sensor is arranged in the detection chamber for monitoring the organic fluoride component in the gas.

[0012] As a further solution of the present invention, the plug connector module further includes an electrical connector and a displacement sensor, both of which are fixedly arranged on the surface of the lifting member, and the plug connector is electrically connected to the electrical connector.

[0013] As a further solution of the present invention, the charging and discharging integrated module includes a charging device and a load device, and both the charging device and the load device can be electrically connected to the electrical connector.

[0014] Beneficial effects of the present invention: This application abandons the existing method of using multiple cylinders to achieve separate loading, clamping positioning, charging and discharging testing, and unloading. By optimizing the mechanical structure and motion path and the clever coordination between various modules, the above functions can be achieved using only one set of telescopic cylinders and a single operating path. It has the characteristics of simplified electromechanical structure, clever structural coordination and low maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a perspective view of the present invention.

[0016] Figure 2 It is an exploded view of the present invention.

[0017] Figure 3 This is a three-dimensional diagram of a test stand according to an embodiment of the present invention.

[0018] Figure 4 This is a three-dimensional diagram of a plug connector module according to an embodiment of the present invention.

[0019] Figure 5 3D is a perspective view of a driving module according to an embodiment of the present invention.

[0020] Figure 6 This is an assembly diagram of the loading module according to an embodiment of the present invention.

[0021] Figure 7 This is an assembly diagram of the plug connector module, drive module, loading module and clamping member according to an embodiment of the present invention.

[0022] Figure 8 It is the front view of the present invention.

[0023] Figure 9 It is a right side view of the present invention.

[0024] Figure 10 It is a left view of the present invention.

[0025] Figure 11 It is a top view of the present invention.

[0026] Figure 12 It is a front cross-sectional view of the present invention.

[0027] Figure 13 It is a side sectional view of the present invention.

[0028] Figure 14 For the present invention Figure 12 A partial enlarged view of point a in the middle.

[0029] Reference numerals: 1-test stand, 11-loading platform, 12-explosion-proof bin, 13-horizontal guide rail, 14-unloading area, 15-test equipment placement area, 16-limiting hole, 17-plug hole; 2-Charge and discharge integrated module; 3- connector module, 31- connector, 32- lifting member, 33- threaded tube, 34- gear, 35- threaded rod, 36- electrical connector, 37- displacement sensor; 4-driving module, 41-telescopic cylinder, 42-special-shaped frame, 43-pressure bar, 44-rack; 5-feeding module, 51-L-shaped frame, 52-No. 1 boss, 53-No. 2 boss, 54-first spring, 55-longitudinal groove; 6-clamping piece, 61-wedge block No. 1, 62-clamping block, 63-sliding rod, 64-second spring; 7- cooling system, 71- air circulation cooling module, 72- air inlet pipe, 73- air outlet pipe; 8- blanking piece, 81- wedge block No. 2, 82- pin rod, 83- third spring; 9-battery to be tested, 91-electrode sheet; 10-Control the display. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0032] See also Figures 1 to 14In one embodiment of the present invention, a charge and discharge tester for a dilute gel power battery for an electric vehicle includes a test stand 1 and a charge and discharge integrated module 2. The test stand 1 is provided with a loading platform 11 and an explosion-proof bin 12. Horizontal guide rails 13 are provided inside the loading platform 11 and the explosion-proof bin 12. The specific structure and material of the interior of the explosion-proof bin 12 are not limited. The test stand 1 also includes: The plug connector module 3 includes a plug connector 31, a lifting member 32, a threaded tube 33, an electrical connector 36, a displacement sensor 37, a gear 34 and a threaded rod 35. The two plug connectors 31 are fixedly connected to the lifting member 32, the charging and discharging integrated module 2 is electrically connected to the plug connector 31, the threaded tube 33 is connected to the surface of the explosion-proof warehouse 12, one end of the threaded rod 35 is fixedly connected to the lifting member 32, and the other end of the threaded rod 35 is threadedly connected to the threaded tube 33, the gear 34 is fixedly connected to the threaded tube 33, the electrical connector 36 and the displacement sensor The sensors 37 are all fixedly arranged on the surface of the lifting member 32. The plug connector 31 is electrically connected to the electrical connector 36. The displacement sensor 37 is used to accurately monitor the displacement of the plug connector 31. The specific model or structure of the plug connector 31 is not limited. It can be a banana plug or an Anderson plug. The lifting member 32 is a lifting plate with a wire embedded inside. The wire is connected between the plug connector 31 and the electrical connector 36. The electrical connector 36 and the charging and discharging integrated module 2 are also connected to each other through a wire. A limit hole 16 is provided on the surface of the explosion-proof warehouse 12. The plug connector 31 is always located in the limit hole 16; The driving module 4 includes a telescopic cylinder 41, a special-shaped frame 42, a rack 44 and a pressure strip 43. One end of the telescopic cylinder 41 is fixedly connected to the test frame 1, and the special-shaped frame 42 is fixedly connected to the other end of the telescopic cylinder 41. The rack 44 and the pressure strip 43 are fixedly provided on the surface of the special-shaped frame 42. The gear 34 can be driven and connected to the rack 44. The loading module 5 includes an L-shaped frame 51 and a first spring 54. The L-shaped frame 51 is slidably connected between the loading platform 11 and the explosion-proof bin 12. The first spring 54 is connected between the L-shaped frame 51 and the test frame 1. A first boss 52 and a second boss 53 are respectively provided at both ends of the L-shaped frame 51. The special-shaped frame 42 can contact the surface of the first boss 52. The first spring 54 is connected between the second boss 53 and the test frame 1. The L-shaped frame 51 is slidably connected in the horizontal guide rail 13. The elastic deformation of the first spring 54 is used to ensure that the L-shaped frame 51 fits the explosion-proof bin 12. The size of the battery 9 to be tested is smaller than that of the L-shaped frame 51. A clamping member 6 is provided on the surface of the explosion-proof bin 12, and the clamping member 6 includes a No. 1 wedge block 61, a clamping block 62, a slide bar 63 and a second spring 64. A slide bar 63 is fixedly connected between the No. 1 wedge block 61 and the clamping block 62, and the slide bar 63 passes through the explosion-proof bin 12. The second spring 64 is sleeved on the surface of the slide bar 63. The pressure strip 43 can slide in contact with the surface of the No. 1 wedge block 61. The inner wall of the explosion-proof bin 12 and the surface of the L-shaped frame 51 are both provided with limiting protrusions. When the L-shaped frame 51 is fitted with the explosion-proof bin 12, it can ensure that both sides of the battery 9 to be tested are fitted between the two groups of limiting protrusions, which has a pre-positioning function, and cooperates with the positioning of the two groups of clamping blocks 62 arranged symmetrically, so that the electrode sheet 91 can be accurately located below the plug-in hole.

[0033] In the embodiment of the present invention, after the battery 9 to be tested is placed on the surface of the L-shaped frame 51 on the loading platform 11, the telescopic cylinder 41 is used to control the special-shaped frame 42 to move toward the test equipment placement area 15. The elastically contracted first spring 54 drives the first boss 52 to fit with the special-shaped frame 42 to deliver the battery 9 to be tested into the explosion-proof chamber 12; The position design and size design of the rack 44 and the pressure bar 43 can achieve the following technical effects: as the special-shaped frame 42 continues to move, the clamping block 62 is first driven to position and clamp the battery 9 to be tested by the sliding contact between the pressure bar 43 and the wedge block 61, and then the transmission connection between the rack 44 and the gear 34 is used to directly drive the threaded tube 33 to rotate, and then the rotating threaded tube 33 is indirectly used to control the threaded rod 35, the connector 31 and the electrode sheet 91 to be plugged in or contacted.

[0034] See also Figure 1 、 Figure 3 and Figure 10 In one embodiment of the present invention, the test stand 1 is further provided with a material unloading area 14 and a test equipment placement area 15. The explosion-proof warehouse 12 is connected to the material unloading area 14. The test equipment placement area 15 is fixedly connected to the charge and discharge integrated module 2, the heat dissipation system 7 and the control display 10. The charge and discharge integrated module 2 includes a charging device and a load device. Both the charging device and the load device can be electrically connected to the electrical connector 36. It should be noted that the clamping surface of the clamping block 62 is provided with a groove, and a temperature sensor is integrated inside the groove, which can be used to monitor the temperature parameters of the surface of each battery 9 to be tested. When the surface temperature of the battery 9 to be tested rises to a certain threshold (the battery surface temperature of 60°C is the critical point), the control display automatically and simultaneously controls the charge and discharge integrated module to stop testing and controls the heat dissipation system 7 to start until the battery surface cools down to a certain temperature and then the unloading program is started.

[0035] See also Figure 12 and Figure 13Furthermore, the heat dissipation system 7 includes an air circulation heat dissipation module 71, an air inlet pipe 72 and an air outlet pipe 73. The air circulation heat dissipation module 71 includes a circulation pump body, a detection chamber, a gas sensor, a purification chamber, an air inlet and an air outlet. The outside air enters the explosion-proof warehouse 12 through the air inlet, the circulation pump body and the air inlet pipe 72. The air in the explosion-proof warehouse 12 is discharged through the air outlet pipe 73, the circulation pump body, the detection chamber, the purification chamber and the air outlet. The gas sensor is arranged in the detection chamber to monitor the organic fluoride components in the gas.

[0036] In an embodiment of the present invention, the control display 10 is used to monitor the voltage parameters, current parameters, battery surface temperature and whether gases such as C3H6F2, HF, and CF4 are generated during the battery charge and discharge test. Considering that the battery temperature will increase during the charge and discharge test of the battery by the charging device and the load device through the electrical connector 36, the present application uses the heat dissipation system 7 to dissipate heat and cool the battery. At the same time, the gas sensor is used to monitor whether there are gas components such as C3H6F2, HF, and CF4 inside the explosion-proof chamber 12 to determine whether the electrode slurry bonding performance of the battery is degraded, and then determine whether it can cause the active material to fall off. It has the characteristics of using air circulation heat dissipation to detect battery heat dissipation failures and active protection.

[0037] See also Figure 1 、 Figure 4 and Figure 8 In one embodiment of the present invention, a blanking piece 8 is further included, which includes a No. 2 wedge block 81, a pin rod 82 and a third spring 83. The No. 2 wedge block 81 is fixedly connected to the pin rod 82. The surfaces of the explosion-proof warehouse 12 and the L-shaped frame 51 are respectively provided with a limiting hole 16 and a longitudinal groove 55. The No. 2 wedge block 81 passes through the limiting hole 16. The third spring 83 is sleeved on the surface of the pin rod 82. The inclined surface of the No. 2 wedge block 81 faces away from the inner side of the explosion-proof warehouse 12, and the No. 2 wedge block 81 can enter the longitudinal groove 55.

[0038] In the embodiment of the present invention, it should be noted that before the test, the battery 9 to be tested, which moves with the L-shaped frame 51, is driven to move upward by sliding contact with the second wedge block 81. When the L-shaped frame 51 is sealed and fitted with the explosion-proof chamber 12, the elastic deformation of the third spring 83 drives the second wedge block 81 to enter the longitudinal groove 55; after the test, the telescopic cylinder 41 is used to control the reverse movement of the special-shaped frame 42, which can not only drive the plug-in component 31 to disengage from the electrode sheet 91 and the clamping block 62 to disengage from the battery 9 to be tested, but also utilize the limit of the second wedge block 81 to drive the battery 9 to be tested to slide relative to the L-shaped frame 51, and then automatically fall into the conveyor belt in the unloading area 14. During the entire test process, only the telescopic cylinder 41 is used to control the horizontal movement of the special-shaped frame 42 to automatically complete the loading, clamping positioning, precise connection of the electrode sheet 91 and unloading. Compared with the traditional single control method, it has the characteristics of simplified electromechanical structure, clever structural coordination and low maintenance cost.

[0039] In summary, the present application abandons the existing method of using multiple cylinders to achieve separate loading, clamping positioning, charging and discharging testing, and unloading. By optimizing the mechanical structure and motion path and the clever coordination between the various modules, the above functions can be achieved by using only one set of telescopic cylinders 41 and a single operating path. It has the characteristics of simplified electromechanical structure, clever structural coordination and low maintenance cost.

[0040] For those skilled in the art, although several embodiments and examples of the present invention have been described, these embodiments and examples are provided as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and changes can be made without departing from the scope of the invention.

[0041] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A charge and discharge tester for a dilute gel power battery for electric vehicles, comprising a test stand (1) and a charge and discharge integrated module (2), wherein the test stand (1) is provided with a loading platform (11) and an explosion-proof chamber (12), and is characterized in that: Also includes: A plug connector module (3), the plug connector module (3) comprising a plug connector (31), a lifting member (32), a threaded tube (33), a gear (34) and a threaded rod (35), the two plug connectors (31) are fixedly connected to the lifting member (32), the charging and discharging integrated module (2) is electrically connected to the plug connector (31), the threaded tube (33) is connected to the surface of the explosion-proof warehouse (12), one end of the threaded rod (35) is fixedly connected to the lifting member (32), the other end of the threaded rod (35) is threadedly connected in the threaded tube (33), and the gear (34) is fixedly connected to the threaded tube (33); A driving module (4), the driving module (4) comprising a telescopic cylinder (41), a special-shaped frame (42), a rack (44) and a pressure strip (43), one end of the telescopic cylinder (41) being fixedly connected to the test frame (1), the special-shaped frame (42) being fixedly connected to the other end of the telescopic cylinder (41), the rack (44) and the pressure strip (43) being fixedly provided on the surface of the special-shaped frame (42), and the gear (34) being capable of being transmission-connected to the rack (44); A loading module (5), the loading module (5) comprising an L-shaped frame (51) and a first spring (54), the L-shaped frame (51) being slidably connected between the loading platform (11) and the explosion-proof bin (12), the first spring (54) being connected between the L-shaped frame (51) and the test frame (1), and the special-shaped frame (42) being capable of contacting the surface of the L-shaped frame (51); A clamping member (6) is arranged on the surface of the explosion-proof chamber (12), wherein the clamping member (6) comprises a wedge-shaped block (61) No. 1, and the pressure strip (43) is capable of slidingly contacting the surface of the wedge-shaped block (61) No.

1.

2. The charge and discharge tester for a dilute gel power battery for electric vehicles according to claim 1, characterized in that: The utility model also includes a blanking piece (8), wherein the blanking piece (8) includes a second wedge block (81), a pin rod (82) and a third spring (83), wherein the second wedge block (81) is fixedly connected to the pin rod (82), and the surfaces of the explosion-proof warehouse (12) and the L-shaped frame (51) are respectively provided with a plug hole (17) and a longitudinal groove (55), wherein the second wedge block (81) passes through the plug hole (17), and the third spring (83) is sleeved on the surface of the pin rod (82), and the inclined surface of the second wedge block (81) faces away from the inner side of the explosion-proof warehouse (12), and the second wedge block (81) can enter the longitudinal groove (55).

3. A charge and discharge tester for a dilute gel power battery for electric vehicles according to claim 2, characterized in that: The clamping member (6) further comprises a clamping block (62), a slide rod (63) and a second spring (64); the slide rod (63) is fixedly connected between the first wedge block (61) and the clamping block (62); the slide rod (63) passes through the explosion-proof chamber (12); and the second spring (64) is sleeved on the surface of the slide rod (63).

4. A charge and discharge tester for a dilute gel power battery for electric vehicles according to claim 3, characterized in that: The L-shaped frame (51) is provided with a first boss (52) and a second boss (53) at both ends, respectively. The special-shaped frame (42) can be in surface contact with the first boss (52). The first spring (54) is connected between the second boss (53) and the test frame (1).

5. The charge and discharge tester for a dilute gel power battery for electric vehicles according to claim 1, characterized in that: The test stand (1) is further provided with a material unloading area (14) and a test equipment placement area (15); the explosion-proof warehouse (12) is connected to the material unloading area (14); and the test equipment placement area (15) is fixedly connected to a charge and discharge integrated module (2), a heat dissipation system (7), and a control display (10).

6. A charge and discharge tester for a dilute gel power battery for electric vehicles according to claim 5, characterized in that: The heat dissipation system (7) comprises an air circulation heat dissipation module (71), an air inlet pipe (72) and an air outlet pipe (73); the air circulation heat dissipation module (71) comprises a circulation pump body, a detection chamber, a gas sensor, a purification chamber, an air inlet and an air outlet; external air enters the explosion-proof chamber (12) through the air inlet, the circulation pump body and the air inlet pipe (72); the air in the explosion-proof chamber (12) is discharged through the air outlet pipe (73), the circulation pump body, the detection chamber, the purification chamber and the air outlet; the gas sensor is arranged in the detection chamber and is used to monitor the organic fluoride components in the gas.

7. A charge and discharge tester for a dilute gel power battery for electric vehicles according to claim 1, characterized in that: The plug connector module (3) further comprises an electrical connector (36) and a displacement sensor (37), wherein the electrical connector (36) and the displacement sensor (37) are both fixedly arranged on the surface of the lifting member (32), and the plug connector (31) is electrically connected to the electrical connector (36).

8. A charge and discharge tester for a dilute gel power battery for electric vehicles according to claim 7, characterized in that: The charging and discharging integrated module (2) comprises a charging device and a load device, and both the charging device and the load device can be electrically connected to an electrical connector (36).

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