Exhaust device and detection device of soft package battery

Abstract

The utility model discloses an exhaust device and a detection device of a soft package battery. An exhaust device of a soft package battery comprises a bearing table, a first fixing piece, a second fixing piece and an exhaust roller. The bearing table is used for bearing the soft package battery. The first fixing piece is arranged on the bearing table and is used for fixing a positive tab of the soft package battery; and the second fixing piece is arranged on the bearing table and is used for fixing a negative tab of the soft package battery. The exhaust roller is arranged on the bearing table in a rolling mode and can roll the surface of the soft package battery. And the exhaust roller rolls the surface of the soft package battery, so that gas in the soft package battery is exhausted. The gas exhausting device can more effectively exhaust gas generated by formation and aging of the soft package battery, reduces gas residues in the soft package battery, further solves the problems that lithium cannot be embedded in bubbles and lithium is excessively embedded around the bubbles, and improves the capacity and the safety performance of the soft package battery.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of battery equipment, especially to a kind of exhaust device and detection device of soft package battery. BACKGROUND

[0002] With the size of soft package battery is bigger and bigger, the existing air extraction device cannot guarantee that each soft package battery can completely extract the gas generated by formation and aging, especially the tiny bubbles on the outermost side of battery. Gas residue can cause the negative electrode of soft package battery to be unable to embed lithium at the bubble, and the surrounding bubble to transition to embed lithium and appear lithium precipitation problems. This problem can cause the capacity of soft package battery to be low, the cycle to be poor, and there is a safety risk, reducing the safety performance of soft package battery. SUMMARY

[0003] The main purpose of the utility model is to provide an exhaust device and detection device for soft package battery, which aims to solve the technical problem of residual gas in soft package battery, which causes the capacity of soft package battery to be low and reduces the safety performance of soft package battery.

[0004] To achieve the above utility model purpose, the utility model discloses a first aspect of a kind of exhaust device for soft package battery.

[0005] An exhaust device for soft package battery, comprising:

[0006] A bearing table for bearing the soft package battery;

[0007] A first fixing part is arranged on the bearing table, and the first fixing part is used to fix the positive electrode ear of the soft package battery;

[0008] A second fixing part is arranged on the bearing table, and the second fixing part is used to fix the negative electrode ear of the soft package battery; and

[0009] An exhaust roller is arranged on the bearing table and can roll the surface of the soft package battery.

[0010] In one embodiment, the exhaust device further comprises a driving assembly arranged on the bearing table, the driving assembly is connected with the exhaust roller, and the driving assembly is used to drive the exhaust roller to roll relative to the bearing table.

[0011] In one embodiment, the driving assembly comprises a first driving part and a second driving part, the first driving part is connected with one end of the exhaust roller, and the second driving part is connected with the other end of the exhaust roller.

[0012] In one of the embodiments, the exhaust device further comprises a pressure sensor, which is arranged between the driving assembly and the exhaust roller, and is used to sense the driving pressure of the driving assembly on the exhaust roller.

[0013] In one of the embodiments, the exhaust device further comprises a display, which is electrically connected with the pressure sensor, and is capable of displaying the driving pressure sensed by the pressure sensor.

[0014] In one of the embodiments, the exhaust device comprises a first buffer layer, which is arranged on the first fixing member, and is used to buffer the acting force between the first fixing member and the positive electrode tab of the soft package battery; and / or

[0015] the exhaust device comprises a second buffer layer, which is arranged on the second fixing member, and is used to buffer the acting force between the second fixing member and the negative electrode tab of the soft package battery.

[0016] In one of the embodiments, the exhaust device further comprises an air bag, which is arranged on the bearing table, and is in communication with the body of the soft package battery, and is used to collect the gas discharged from the body of the soft package battery.

[0017] In one of the embodiments, the first fixing member and the second fixing member are arranged oppositely.

[0018] The second aspect of the utility model provides a kind of detection device of soft package battery, including conveying device, detection mechanism and above-mentioned exhaust device, the conveying device is respectively connected with the detection mechanism and the exhaust device, and the conveying device is used to convey the soft package battery on the exhaust device to the detection mechanism, and the detection mechanism is used to detect the bubble in the soft package battery.

[0019] In one of the embodiments, the detection mechanism is an ultrasonic instrument, which is provided with electrically insulated ultrasonic medium, which is used to soak the soft package battery.

[0020] Beneficial effects:

[0021] The utility model discloses a bearing platform, and the bearing platform is used for bearing soft package battery. The first fixed part sets up on the bearing platform, and the first fixed part fixes the positive pole ear of soft package battery. The second fixed part sets up on the bearing platform, and the second fixed part fixes the negative pole ear of soft package battery, so that the soft package battery is fixed on the bearing platform. The exhaust roller is rolled and sets up on the bearing platform, and can roll the surface of the soft package battery on the bearing platform. The exhaust roller rolls the surface of the soft package battery, thereby discharging the gas in the soft package battery. The exhaust device can discharge the gas produced by the formation and aging of the soft package battery, reduces the gas residue in the soft package battery, and further reduces the problems of the lithium embedding of the bubble place and the lithium embedding of the transition around the bubble, improves the capacity and safety performance of the soft package battery. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the structure schematic diagram of the soft package battery exhaust device of one embodiment of the utility model.

[0023] Figure 2 It is the structure schematic diagram of the soft package battery detection mechanism of one embodiment of the utility model.

[0024] Among them:

[0025] 100, bearing platform, 110, soft package battery, 111, positive pole ear, 112, negative pole ear,

[0026] 200, first fixed part, 210, first buffer layer,

[0027] 300, second fixed part, 310, second buffer layer,

[0028] 400, exhaust roller,

[0029] 510, first drive part, 520, second drive part,

[0030] 600, pressure sensor,

[0031] 700, display,

[0032] 800, air bag,

[0033] 900, detection mechanism, 910, ultrasonic medium.

[0034] The utility model discloses the realization, functional characteristics and advantages will be further explained with reference to the drawings. DETAILED DESCRIPTION

[0035] It should be understood that the specific embodiments described herein are merely intended to explain the utility model, and are not used to limit the utility model.

[0036] In the description of the utility model, it is necessary to understand that the orientation or positional relation indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is the orientation or positional relation based on the orientation or positional relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0037] In the description of the utility model, it should be explained that, unless otherwise specifically defined and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, it can be directly connected, or indirectly connected through intermediate medium, it can be the communication between two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0038] In the utility model, unless otherwise specifically defined and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0039] As Figure 1As shown, in some embodiments, a venting device for a pouch battery includes a support platform 100, a first fixing member 200, a second fixing member 300, and a venting roller 400. The support platform 100 supports the pouch battery 110. The first fixing member 200 is disposed on the support platform 100 and is used to fix the positive electrode tab 111 of the pouch battery 110. The second fixing member 300 is disposed on the support platform 100 and is used to fix the negative electrode tab 112 of the pouch battery 110. The venting roller 400 is rotatably disposed on the support platform 100 and is capable of rolling and pressing the surface of the pouch battery 110. The venting roller 400 rolls and presses the surface of the pouch battery 110, thereby venting the gas inside the pouch battery 110. Compared with the vacuum pumping method in related technologies, this venting device can more effectively vent the gas generated during the formation and aging of the pouch battery, reduce the gas residue inside the pouch battery, thereby reducing the problems of lithium incompatibility at the bubble sites and excessive lithium intercalation around the bubbles, and improving the capacity and safety performance of the pouch battery.

[0040] Specifically, the support table 100 can be a process table. The exhaust roller 400 can be made of rubber.

[0041] Specifically, the first fixing member 200 and the second fixing member 300 can be designed as a clamping structure. The clamping structure consists of two openable clamping arms, and the inner side of the clamping arms can have a pad made of soft material such as rubber or silicone to increase friction and protect the electrode tabs from damage.

[0042] Specifically, the dimensions of the first fixing member 200 can be precisely designed according to the size and shape of the positive electrode tab 111 of the pouch battery 110. The dimensional parameters such as the width, thickness, and length of the positive electrode tab 111 of the pouch battery 110 determine the dimensions of the clamping arm width, claw spacing, or adsorption area of ​​the first fixing member 200.

[0043] Specifically, the dimensions of the second fixing member 300 need to be precisely designed according to the size and shape of the negative electrode tab 112 of the pouch battery 110. The dimensional parameters such as the width, thickness, and length of the negative electrode tab 112 of the pouch battery 110 determine the dimensions of the clamping arm width, claw spacing, or adsorption area of ​​the second fixing member 300.

[0044] In some embodiments, the venting device includes a first buffer layer 210 disposed on the first fixing member 200, the first buffer layer 210 being used to buffer the force between the first fixing member 200 and the positive electrode tab 111 of the pouch battery 110. The venting device also includes a second buffer layer 310 disposed on the second fixing member 300, the second buffer layer 310 being used to buffer the force between the second fixing member 300 and the negative electrode tab 112 of the pouch battery 110.

[0045] It should be noted that during the exhaust process of the soft package battery 110, the first fixing member 200 and the second fixing member 300 respectively apply forces to the positive and negative tabs when the first fixing member 200 and the second fixing member 300 are respectively fixed to the positive and negative tabs. The forces will be concentrated on the contact points of the positive and negative tabs and the first fixing member 200 and the second fixing member 300, causing mechanical damage such as indentation, scratch and even deformation on the surface of the positive and negative tabs. The first buffer layer 210 and the second buffer layer 310 can effectively disperse and absorb the forces, and uniformly distribute the forces on the contact surface of the first buffer layer 210 and the second buffer layer 310 and the tabs, avoiding direct damage to the tabs caused by excessive local stress, thereby protecting the integrity and structural stability of the tabs.

[0046] Specifically, the first buffer layer 210 and the second buffer layer 310 can be foam.

[0047] In some embodiments, the first fixing member 200 and the second fixing member 300 are oppositely arranged. The positive and negative tabs of the soft package battery 110 are respectively located on both sides of the battery body, and the opposite arrangement of the first fixing member 200 and the second fixing member 300 can accurately correspond to the positions of the positive and negative tabs, thereby achieving effective fixation of the tabs.

[0048] In other embodiments, the first fixing member 200 and the second fixing member 300 can also be arranged on the same side. The positive and negative tabs of the soft package battery 110 are respectively located on the same side of the battery body, and the first fixing member 200 and the second fixing member 300 are arranged on the same side of the soft package battery 110, which can accurately correspond to the positions of the positive and negative tabs, thereby achieving effective fixation of the tabs.

[0049] In some embodiments, the exhaust device further comprises a driving assembly. The driving assembly is arranged on the carrying table 100, and the driving assembly is connected with the exhaust roller 400. The driving assembly is used to drive the exhaust roller 400 to roll relative to the carrying table 100.

[0050] Specifically, the driving assembly can be a mechanical arm. The mechanical arm can accurately control the movement trajectory of the exhaust roller 400 through programming. During the exhaust process of the soft package battery 110, the rolling path of the exhaust roller 400 can be accurately planned according to the size, shape and exhaust position of the soft package battery 110, so that the exhaust roller 400 can uniformly and comprehensively cover the surface of the soft package battery 110, and the gas in the soft package battery 110 can be efficiently exhausted.

[0051] In some embodiments, the driving assembly includes a first driving member 510 and a second driving member 520, the first driving member 510 is connected to one end of the exhaust roller 400, and the second driving member 520 is connected to the other end of the exhaust roller 400. The first driving member 510 and the second driving member 520 are respectively connected to the two ends of the exhaust roller 400, and can simultaneously apply driving force to the exhaust roller 400 from both ends. In this way, it can be ensured that the driving force received by the exhaust roller 400 during rolling is more uniform, and the problem of uneven roller pressure caused by one-sided driving can be avoided. For example, during the exhaust process of the soft package battery 110, if the exhaust roller 400 is driven only from one end, it may cause the exhaust roller 400 to be unevenly stressed in the length direction, resulting in inconsistent roller pressure, affecting the exhaust effect of the soft package battery 110, and even possibly damaging the battery surface. The double-end driving method can effectively solve this problem, so that the exhaust roller 400 uniformly applies pressure to the battery surface in the entire length range, ensuring the uniformity and stability of the exhaust.

[0052] In some embodiments, the exhaust device further includes a pressure sensor 600. The pressure sensor 600 is arranged between the driving assembly and the exhaust roller 400, and the pressure sensor 600 is used to sense the driving pressure of the driving assembly on the exhaust roller 400. That is, the pressure sensor 600 can sense the pressure of the exhaust roller 400 on the soft package battery 110.

[0053] Specifically, the pressure sensor 600 can be provided as two. The two pressure sensors 600 are respectively arranged at the two ends of the exhaust roller 400. By arranging the pressure sensor 600 at both ends of the exhaust roller 400, the driving pressure of the driving assembly on both ends of the exhaust roller 400 can be monitored, and the pressure distribution on the exhaust roller 400 can be more accurately understood.

[0054] In some embodiments, the exhaust device further includes a display 700. The display 700 is electrically connected with the pressure sensor 600, and the display 700 can display the driving pressure sensed by the pressure sensor 600. The display 700 can also display the roller pressure speed of the exhaust roller 400 and the temperature of the soft package battery 110 and other parameters.

[0055] In some embodiments, the exhaust device further includes an air bag 800, the air bag 800 is arranged on the bearing table 100, the air bag 800 is in communication with the body of the soft package battery 110, and the air bag 800 is used to collect the gas discharged from the body of the soft package battery 110.

[0056] It should be noted that according to the thickness of the soft package battery 110, the front roller pressing of the soft package battery 110 by the exhaust roller 400 or the increase of the side roller pressing of the soft package battery 110 once helps to extrude the gas in the battery body to the battery air bag 800, reduces the failure probability of the air exhaust sealing edge, reduces the battery negative bubble spot and lithium precipitation phenomenon caused by the bubble residue, improves the product qualification rate, reduces the manufacturing cost of the soft package battery 110, and improves the safety performance of the soft package battery 110.

[0057] As shown in Figure 2 In other embodiments, a detection device of a soft package battery includes a conveying device, a detection mechanism 900 and the above-mentioned exhaust device. The conveying device is connected with the detection mechanism 900 and the exhaust device respectively. The conveying device is used to convey the soft package battery 110 on the exhaust device to the detection mechanism 900. The detection mechanism 900 is used to detect the bubbles in the soft package battery 110. In operation, the soft package battery 110 treated by the exhaust device is conveyed by the conveying device to the detection mechanism 900, and the detection mechanism 900 detects the bubbles in the soft package battery 110. If the soft package battery 110 is detected to be in a qualified state, the next process is performed, and the parameters displayed on the display 700 are recorded. The display parameters include the pressure and speed of the exhaust roller 400. It is explained that the parameters are beneficial to the exhaust of the bubbles in the soft package battery 110. When the same type of soft package battery 110 is treated, the parameters can be referred to, and the efficiency of the bubble exhaust is improved. If the soft package battery 110 is detected to be in an unqualified state, the soft package battery 110 is returned to the exhaust device, the parameters of the exhaust roller 400 are adjusted, and the soft package battery 110 is treated by the exhaust device again until the soft package battery 110 is in a qualified state. The parameters of the exhaust roller 400 in the qualified state are recorded.

[0058] Specifically, the detection mechanism 900 is an ultrasonic instrument, and an electrically insulated ultrasonic medium 910 is arranged in the ultrasonic instrument and used to soak the soft package battery 110. Specifically, the ultrasonic instrument can be an industrial ultrasonic instrument. The electrically insulated ultrasonic medium 910 can be silicone oil.

[0059] In the related art, after the soft package battery is fully charged, whether the battery cell has bubble spots and lithium precipitation and other abnormalities is detected to detect whether the air exhaust sealing edge is qualified. This method is destructive verification, which causes waste of the soft package battery and increases the production cost. In addition, this method requires the soft package battery to be fully charged, and the battery charging needs time, which reduces the production efficiency. The ultrasonic instrument of this embodiment can quickly detect the bubbles in the soft package battery, quickly determine the reliability of the equipment parameters according to the detection result, and detect in a non-destructive manner, thereby improving the production efficiency, reducing the manufacturing cost of the soft package battery, and improving the battery qualification rate.

[0060] The above merely describes preferred embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which are made by using the content of the present application specification and drawings, are also included in the patent protection scope of the present application.

Claims

1. An exhaust device of a pouch battery, characterized by comprising: The application relates to a soft package battery exhaust device. The application relates to a soft package battery exhaust device. The application relates to a soft package battery exhaust device. The application relates to a soft package battery exhaust device. The application relates to a soft package battery exhaust device.

2. The exhaust apparatus according to claim 1, characterized by The application relates to a soft package battery exhaust device.

3. The exhaust apparatus according to claim 2, characterized by The application relates to a soft package battery exhaust device.

4. The exhaust apparatus according to claim 2, characterized by The application relates to a soft package battery exhaust device.

5. The exhaust apparatus according to claim 4, characterized by The application relates to a soft package battery exhaust device.

6. The exhaust apparatus according to claim 1, characterized by The application relates to a soft package battery exhaust device. The application relates to a soft package battery exhaust device.

7. The exhaust apparatus according to claim 1, characterized by The application relates to a soft package battery exhaust device.

8. The exhaust apparatus according to claim 1, characterized by The application relates to a soft package battery exhaust device. The application relates to a soft package battery exhaust device.

10. The detection device of claim 9, wherein, The application relates to a soft package battery exhaust device. The application relates to a soft package battery exhaust device. The application relates to a soft package battery exhaust device. The application relates to a soft package battery exhaust device. The application relates to a soft package battery exhaust device. The application relates to a soft package battery exhaust device. The application relates to a soft package battery exhaust device. The application relates to a soft package battery exhaust device. The application relates to a soft package battery exhaust device. The application relates to a soft package battery exhaust device. The application relates to a soft package battery exhaust device. The application relates to a soft package battery exhaust device. The application relates to a soft package battery exhaust device. The application relates to a soft package battery exhaust device. 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