A charge-discharge tester for a dilute gel power battery for an electric vehicle

Abstract

The application relates to the technical field of battery testing, and provides a charge-discharge tester for a dilute gel power battery of an electric vehicle, which comprises a test frame, a plug connector module, a driving module, a feeding module, a clamping piece and a charge-discharge integrated module, the test frame is provided with a feeding platform and an explosion-proof bin, plug connectors in the plug connector module are fixedly connected with lifting pieces, the charge-discharge integrated module is electrically connected with the plug connectors, a threaded pipe is arranged on the surface of the explosion-proof bin, a threaded rod is connected between the lifting piece and the threaded pipe, a gear is fixedly connected with the threaded pipe, a special-shaped frame in the driving module is fixedly provided with a rack and a pressing strip on the surface, the gear is in transmission connection with the rack, an L-shaped frame in the feeding module is in sliding connection between the feeding platform and the explosion-proof bin, a first spring is connected between the L-shaped frame and the test frame, the special-shaped frame can be in surface contact with the L-shaped frame, the clamping piece comprises a No.1 wedge-shaped block, the pressing strip is in sliding contact with the surface of the No.1 wedge-shaped block, and the charge-discharge tester has the characteristics of simplified electromechanical structure, ingenious structural cooperation and low maintenance cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery testing, in particular to a charge-discharge tester for a dilute gel power battery for an electric vehicle. BACKGROUND

[0002] According to the search, the publication number CN114594376B discloses a retired power battery charge-discharge testing device, which comprises an explosion-proof box and a testing mechanism for charging and discharging the power battery. The top wall of the explosion-proof box is provided with an opening, and the testing table is rotatably installed in the opening. The testing table is driven by the driving mechanism to rotate, so that the power battery is turned over into the explosion-proof box, and then the testing mechanism is used to charge and discharge the power battery. During the charge-discharge test, another retired power battery is placed on the fixing mechanism on the other side of the testing table to improve the test efficiency. After the test is completed, the testing table is rotated in the opposite direction, so that another retired power battery enters the explosion-proof box for testing. Under the explosion-proof effect of the explosion-proof box, even if the retired power battery explodes during testing, the fragments generated by the explosion will be blocked by the explosion-proof box and the testing table, and will not harm the test personnel and the testing mechanism, so the safety during testing is higher.

[0003] The above-mentioned battery charge-discharge testing device has certain automation capability, but still has the following defects: (1) considering that the dilute gel power battery may release gas during charge-discharge testing, it is impossible to actively protect and judge the fault reason by actively monitoring the gas parameters; (2) manual participation is too much, and the efficiency is low, for example: the position adjustment of the conductive sheet needs to rely on manual sliding guide rail; (3) although the battery tester in the prior art can also achieve the functions of single feeding, clamping positioning and charge-discharge testing by using multiple cylinders, but there are problems of high procurement cost and complex operation and maintenance.

[0004] In summary, there is still an urgent need for a dilute gel power battery charge-discharge tester that can actively monitor gas parameters for active protection and fault reason judgment, and can reduce cost and improve test efficiency. SUMMARY

[0005] The purpose of the present application is to provide a charge-discharge tester for a dilute gel power battery for an electric vehicle, which aims to solve the problems existing in the prior art battery charge-discharge testing device.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a charge-discharge tester for a dilute gel power battery for an electric vehicle, comprising a testing frame and a charge-discharge integrated module, the testing frame is provided with a feeding platform and an explosion-proof bin, further comprising:

[0007] The plug module comprises two plug parts, a lifting part, a threaded pipe, a gear and a threaded rod, both of the plug parts are fixedly connected with the lifting part, the charge and discharge integrated module is electrically connected with the plug part, the threaded pipe is connected to the surface of the explosion-proof bin, one end of the threaded rod is fixedly connected with the lifting part, the other end of the threaded rod is threadedly connected in the threaded pipe, and the gear is fixedly connected with the threaded pipe.

[0008] The driving module comprises a telescopic cylinder, a special-shaped frame, a rack and a pressure applying strip, one end of the telescopic cylinder is fixedly connected with the test frame, the special-shaped frame is fixedly connected with the other end of the telescopic cylinder, the rack and the pressure applying strip are fixedly arranged on the surface of the special-shaped frame, and the gear can be in transmission connection with the rack.

[0009] The feeding module comprises an L-shaped frame and a first spring, the L-shaped frame is slidingly connected between the feeding platform and the explosion-proof bin, and the first spring is connected between the L-shaped frame and the test frame.

[0010] The clamping piece arranged on the surface of the explosion-proof bin comprises a first wedge-shaped block, and the pressure applying strip can slidingly contact the surface of the first wedge-shaped block.

[0011] As a further scheme of the present application, the discharging piece comprises a second wedge-shaped block, a pin rod and a third spring, the second wedge-shaped block is fixedly connected with the pin rod, the explosion-proof bin and the surface of the L-shaped frame are respectively provided with a limiting hole and a longitudinal groove, the second wedge-shaped block penetrates through the limiting hole, the third spring is sleeved on the surface of the pin rod, the inclined surface of the second wedge-shaped block faces away from the inner side of the explosion-proof bin, and the second wedge-shaped block can enter the longitudinal groove.

[0012] As a further scheme of the present application, the clamping piece further comprises a clamping block, a sliding rod and a second spring, the sliding rod is fixedly connected between the first wedge-shaped block and the clamping block, and the sliding rod penetrates through the explosion-proof bin.

[0013] As a further scheme of the present application, the L-shaped frame is respectively provided with a first boss and a second boss at two ends, the special-shaped frame can contact the surface of the first boss, and the first spring is connected between the second boss and the test frame.

[0014] As a further scheme of the present application, the test frame is further provided with a discharging area and a test equipment placing area, the explosion-proof bin is communicated with the discharging area, and the test equipment placing area is fixedly connected with the charge and discharge integrated module, the heat dissipation system and the control display.

[0015] As a further scheme of the present application, the heat dissipation system comprises an air circulation heat dissipation module, an air inlet pipe and an air outlet pipe, the air circulation heat dissipation module 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 bin through the air inlet, the circulation pump body and the air inlet pipe, and the air in the explosion-proof bin 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 and is used for monitoring the organic fluorine compound in the gas.

[0016] As a further scheme of the present application, the plug connector module further comprises an electrical connector and a displacement sensor, the electrical connector and the displacement sensor are fixedly arranged on the surface of the lifting piece, and the plug connector is electrically connected with the electrical connector.

[0017] As a further scheme of the present application, the charging and discharging integrated module comprises a charging device and a load device, and the charging device and the load device can be electrically connected with the electrical connector.

[0018] The present application discards the existing mode of using multiple cylinders to realize separate feeding, clamping positioning, charging and discharging testing and discharging, and through optimization of mechanical structure and motion path and ingenious cooperation between various modules, the above functions can be realized under the premise of using only one set of telescopic cylinders and a single running path, so that the present application has the characteristics of simplified electromechanical structure, ingenious structure cooperation and low maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a perspective view of the present application.

[0020] Figure 2 It is an explosion view of the present application.

[0021] Figure 3 It is a perspective view of the test frame of the embodiment of the present application.

[0022] Figure 4 It is a perspective view of the plug connector module of the embodiment of the present application.

[0023] Figure 5 It is a perspective view of the driving module of the embodiment of the present application.

[0024] Figure 6 It is an assembly view of the feeding module of the embodiment of the present application.

[0025] Figure 7 It is an assembly view of the plug connector module, the driving module, the feeding module and the clamping piece of the embodiment of the present application.

[0026] Figure 8 It is a front view of the present application.

[0027] Figure 9 It is a right view of the present application.

[0028] Figure 10 is a left view of the present application.

[0029] Figure 11 is a top view of the present application.

[0030] Figure 12 is a front sectional view of the present application.

[0031] Figure 13 is a side sectional view of the present application.

[0032] Figure 14 is a partial enlarged view at a in the present application Figure 12

[0033] Reference signs: 1-test rack, 11-feeding platform, 12-explosion-proof bin, 13-horizontal guide rail, 14-discharging area, 15-test equipment placing area, 16-limiting hole, 17-plug-in hole;

[0034] 2-charging and discharging integrated module;

[0035] 3-plug-in module, 31-plug-in piece, 32-lifting piece, 33-threaded pipe, 34-gear, 35-threaded rod, 36-electric joint, 37-displacement sensor;

[0036] 4-driving module, 41-telescopic air cylinder, 42-irregular-shaped frame, 43-pressure applying strip, 44-rack;

[0037] 5-feeding module, 51-L-shaped frame, 52-first boss, 53-second boss, 54-first spring, 55-longitudinal groove;

[0038] 6-clamping piece, 61-first wedge-shaped block, 62-clamping block, 63-sliding rod, 64-second spring;

[0039] 7-heat dissipation system, 71-air circulation heat dissipation module, 72-air inlet pipe, 73-air outlet pipe;

[0040] 8-discharging piece, 81-second wedge-shaped block, 82-pivot, 83-third spring;

[0041] 9-battery to be tested, 91-electrode sheet;

[0042] 10-control display. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in combination with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. ​

[0044] The specific implementation of the present application is described in detail below in combination with specific embodiments.

[0045] Please refer to Figures 1 to 14 In one embodiment of the present application, a charge-discharge tester for a thin gel power battery for an electric vehicle, a charge-discharge tester for a thin gel power battery for an electric vehicle, comprising a test frame 1 and a charge-discharge integrated module 2, the test frame 1 is provided with a feeding platform 11 and an explosion-proof bin 12, the inner side of the feeding platform 11 and the explosion-proof bin 12 is provided with a horizontal guide rail 13, the specific structure and material of the inside of the explosion-proof bin 12 is not limited, further comprising:

[0046] The plug module 3 comprises a plug 31, a lifting piece 32, a threaded tube 33, an electrical connector 36, a displacement sensor 37, a gear 34 and a threaded rod 35, both of the plugs 31 are fixedly connected with the lifting piece 32, the charge-discharge integrated module 2 is electrically connected with the plug 31, the threaded tube 33 is connected to the surface of the explosion-proof bin 12, one end of the threaded rod 35 is fixedly connected with the lifting piece 32, the other end of the threaded rod 35 is threadedly connected in the threaded tube 33, the gear 34 is fixedly connected with the threaded tube 33, the electrical connector 36 and the displacement sensor 37 are both fixedly arranged on the surface of the lifting piece 32, the plug 31 is electrically connected with the electrical connector 36, the displacement of the plug 31 is accurately monitored by the displacement sensor 37, the specific model or structure of the plug 31 is not limited, which can be a banana plug or an Anderson plug, the lifting piece 32 is a lifting plate with wires embedded inside, the wires are connected between the plug 31 and the electrical connector 36, the electrical connector 36 and the charge-discharge integrated module 2 are also connected with each other through wires, the surface of the explosion-proof bin 12 is provided with a limiting hole 16, the plug 31 is always located in the limiting hole 16;

[0047] The driving module 4 comprises a telescopic air cylinder 41, a special-shaped frame 42, a rack 44 and a pressure applying strip 43, one end of the telescopic air cylinder 41 is fixedly connected with the test frame 1, the other end of the telescopic air cylinder 41 is fixedly connected with the special-shaped frame 42, the surface of the special-shaped frame 42 is fixedly provided with the rack 44 and the pressure applying strip 43, the gear 34 can be drivingly connected with the rack 44;

[0048] The feeding module 5 comprises an L-shaped frame 51 and a first spring 54, the L-shaped frame 51 is slidingly connected between the feeding 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, the L-shaped frame 51 is provided with a first boss 52 and a second boss 53 at two 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, the L-shaped frame 51 is slidingly 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 is attached to the explosion-proof bin 12, and the size of the battery to be tested 9 is smaller than the size of the L-shaped frame 51;

[0049] The clamping piece 6 arranged on the surface of the explosion-proof bin 12 comprises a first wedge block 61, a clamping block 62, a sliding rod 63 and a second spring 64, the sliding rod 63 is fixedly connected between the first wedge block 61 and the clamping block 62, the sliding rod 63 penetrates the explosion-proof bin 12, the second spring 64 is sleeved on the surface of the sliding rod 63, the pressing strip 43 can be in sliding contact with the surface of the first 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 a limiting protrusion, when the L-shaped frame 51 is attached to the explosion-proof bin 12, the battery to be tested 9 can be attached to the two groups of limiting protrusions on both sides, and the pre-positioning effect is achieved, and the positioning of the two groups of clamping blocks 62 arranged symmetrically makes the electrode sheet 91 accurately located below the plug-in hole.

[0050] In the embodiment of the application, after the battery to be tested 9 is placed on the surface of the L-shaped frame 51 on the feeding platform 11, the special-shaped frame 42 is controlled to move towards the test equipment placement area 15 by the telescopic pneumatic cylinder 41, and the first spring 54 is driven to attach the first boss 52 to the special-shaped frame 42, so that the battery to be tested 9 is sent into the explosion-proof bin 12.

[0051] The position design and size design of the rack 44 and the pressing strip 43 can achieve the following technical effects: with the continuous movement of the special-shaped frame 42, the clamping block 62 is first driven to position and clamp the battery to be tested 9 by the sliding contact between the pressing strip 43 and the first wedge block 61, then the threaded pipe 33 is directly driven to rotate by the transmission connection between the rack 44 and the gear 34, and then the threaded rod 35, the plug-in piece 31 and the electrode sheet 91 are indirectly controlled to be plugged or contacted by the rotating threaded pipe 33.

[0052] Please refer to Figure 1 , Figure 3 and Figure 10In one embodiment of the present application, the test rack 1 is further provided with a discharging area 14 and a test equipment placing area 15, the explosion-proof bin 12 is communicated with the discharging area 14, the test equipment placing area 15 is fixedly connected with the charge-discharge integrated module 2, the heat dissipation system 7 and the control display 10, the charge-discharge integrated module 2 comprises a charging device and a load device, and the charging device and the load device can be electrically connected with 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 in the groove, which can be used for monitoring the temperature parameter of the surface of each battery to be tested 9. When the surface of the battery to be tested 9 rises to a certain threshold (60℃ of the battery surface temperature is the critical point), the control display automatically controls the charge-discharge integrated module to stop testing, controls the heat dissipation system 7 to start, and until the battery surface is cooled to a certain temperature, the discharging program is started.

[0053] Please refer to Figure 12 and Figure 13 Further, 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 circulating pump body, a detection chamber, a gas sensor, a purification chamber, an air inlet and an air outlet, external air enters the explosion-proof bin 12 through the air inlet, the circulating pump body and the air inlet pipe 72, and the air in the explosion-proof bin 12 is discharged through the air outlet pipe 73, the circulating pump body, the detection chamber, the purification chamber and the air outlet, and the gas sensor is arranged in the detection chamber and is used for monitoring the organic fluorine compound in the gas.

[0054] In the embodiment of the present application, the control display 10 is used for monitoring the voltage parameter, the current parameter, the battery surface temperature and whether C3H6F2, HF, CF4 and the like are generated in the battery charge-discharge test. Considering that the charging device and the load device can cause the battery temperature to rise in the process of charging and discharging the battery through the electrical connector 36, the present application utilizes the heat dissipation system 7 to dissipate heat and cool the battery, and at the same time, utilizes the gas sensor to monitor whether C3H6F2, HF, CF4 and the like exist in the explosion-proof bin 12 to judge whether the electrode paste adhesion performance of the battery is degraded, and further judge whether the active material can be peeled off, so as to have the characteristics of detecting the battery heat dissipation failure and active protection by air circulation heat dissipation.

[0055] Please refer to Figure 1 , Figure 4 and Figure 8In one embodiment of the present application, a discharging piece 8 is further included, the discharging piece 8 includes a second wedge block 81, a pin rod 82 and a third spring 83, the second wedge block 81 is fixedly connected with the pin rod 82, the explosion-proof bin 12 and the surface of the L-shaped frame 51 are respectively provided with a limiting hole 16 and a longitudinal groove 55, the second wedge block 81 penetrates through the limiting hole 16, the third spring 83 is sleeved on the surface of the pin rod 82, the inclined surface of the second wedge block 81 faces away from the inner side of the explosion-proof bin 12, and the second wedge block 81 can enter the longitudinal groove 55.

[0056] In the embodiment of the present application, it should be noted that before testing, the battery to be tested 9 moving along with the L-shaped frame 51 is driven to move upward in a sliding contact manner with the second wedge block 81, when the L-shaped frame 51 is sealingly attached to the explosion-proof bin 12, the elastic deformation of the third spring 83 drives the second wedge block 81 to enter the longitudinal groove 55; after testing, the reverse movement of the special-shaped frame 42 is controlled by the telescopic cylinder 41, which can not only drive the plug-in piece 31 to separate from the electrode sheet 91 and the clamping block 62 to separate from the battery to be tested 9, but also drive the relative sliding between the battery to be tested 9 and the L-shaped frame 51 by the limiting of the second wedge block 81, and then automatically fall into the conveying belt in the discharging area 14, in the whole testing process, only the horizontal movement of the special-shaped frame 42 is controlled by the telescopic cylinder 41, so that the actions of feeding, clamping positioning, accurately connecting the electrode sheet 91 and discharging can be automatically completed, compared with the traditional separate control mode, the present application has the characteristics of simplifying the mechanical and electrical structure, ingenious structure cooperation and low maintenance cost.

[0057] In summary, the present application discards the existing mode of using multiple cylinders to realize separate feeding, clamping positioning, charging and discharging testing and discharging, and realizes the above functions by optimizing the mechanical structure and movement path and the ingenious cooperation between the modules under the premise of using only one telescopic cylinder 41 and a single running path, and has the characteristics of simplifying the mechanical and electrical structure, ingenious structure cooperation and low maintenance cost.

[0058] For those skilled in the art, although several embodiments and examples of the present application are described, these embodiments and examples are presented as examples and are not intended to limit the scope of the application. These new embodiments can be implemented in other various ways, and various omissions, substitutions, changes can be made without departing from the spirit of the application.

[0059] In addition, it should be understood that although the present application is described in terms of embodiments, each embodiment does not contain only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each example can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A charge / discharge tester for a dilute gel power battery for electric vehicles, comprising a test frame (1) and a charge / discharge integrated module (2), wherein the test frame (1) is provided with a loading platform (11) and an explosion-proof chamber (12), characterized in that, Also includes: The connector module (3) includes a connector (31), a lifting component (32), a threaded tube (33), a gear (34), and a threaded rod (35). Both connectors (31) are fixedly connected to the lifting component (32). The charging and discharging integrated module (2) is electrically connected to the connectors (31). The threaded tube (33) is connected to the surface of the explosion-proof chamber (12). One end of the threaded rod (35) is fixedly connected to the lifting component (32), and the other end of the threaded rod (35) is threaded into the threaded tube (33). The gear (34) is fixedly connected to the threaded tube (33). The drive module (4) includes a telescopic cylinder (41), a special-shaped frame (42), a rack (44), and a pressure bar (43). One end of the telescopic cylinder (41) is fixedly connected to the test frame (1), and the other end of the special-shaped frame (42) is fixedly connected to the telescopic cylinder (41). The rack (44) and the pressure bar (43) are fixedly provided on the surface of the special-shaped frame (42). The gear (34) can be connected to the rack (44) for transmission. 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 chamber (12). The first spring (54) is connected between the L-shaped frame (51) and the test frame (1). The irregular frame (42) can contact the surface of the L-shaped frame (51). A clamping member (6) is provided on the surface of the explosion-proof compartment (12). The clamping member (6) includes a first wedge block (61), and the pressure strip (43) is able to slide in contact with the surface of the first wedge block (61).

2. The charge / discharge tester for a dilute gel power battery for electric vehicles according to claim 1, characterized in that, It also includes a feeding component (8), which includes a second wedge block (81), a pin (82) and a third spring (83). The second wedge block (81) is fixedly connected to the pin (82). The explosion-proof chamber (12) and the L-shaped frame (51) are respectively provided with a plug hole (17) and a longitudinal groove (55). The second wedge block (81) passes through the plug hole (17). The third spring (83) is sleeved on the surface of the pin (82). The inclined surface of the second wedge block (81) faces away from the inside of the explosion-proof chamber (12). The second wedge block (81) can enter the longitudinal groove (55).

3. The charge / discharge tester for a dilute gel power battery for electric vehicles according to claim 2, characterized in that, The clamping member (6) also includes 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. The charge / discharge tester for a dilute gel power battery for electric vehicles according to claim 3, characterized in that, The L-shaped frame (51) has a first boss (52) and a second boss (53) at its two ends respectively. The irregular 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).

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

6. The charge / discharge tester for a dilute gel power battery for electric vehicles according to claim 5, characterized in that, 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. Outside 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 installed in the detection chamber and is used to monitor the organic fluoride components in the gas.

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

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

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