Testing device for soft package battery

Abstract

The utility model discloses a testing device for a soft package battery. The testing device comprises a pressure mechanism, a heating mechanism and a testing mechanism, the heating mechanism comprises an upper heating plate and a lower heating plate, and the upper heating plate and the lower heating plate are arranged in parallel; the pressure mechanism comprises an output air cylinder, the upper heating plate is installed on an output shaft of the output air cylinder, and the testing mechanism is installed on one side edge of the upper heating plate. For the battery to be tested, the pressure mechanism and the heating mechanism apply pressure and high temperature, so that the battery to be tested is in a hot-pressing environment, the testing mechanism tests the resistance value of the battery to be tested in the hot-pressing environment, and the short circuit condition of the polar plate of the battery to be tested and the insulation degree are judged according to the magnitude of the leakage current.

Description

Technical Field

[0001] The present application relates to the technical field of battery testing, and in particular to a testing device for soft-pack batteries. Background Art

[0002] Lithium-ion batteries are widely used in mobile phones, tablets, digital devices, and power tools due to their high energy density, excellent safety, and low pollution. During the lithium-ion battery manufacturing process, impurities in raw materials and inadequate process control can lead to the presence of impurity particles in the battery, causing internal micro-short circuits. Heat sealing can also pose a risk of causing battery short circuits, necessitating micro-short circuit testing under a hot press environment.

[0003] There are only single-function polymer battery hot pressing machines and polymer battery short-circuit testers on the market. Generally, the polymer battery hot pressing and short-circuit test operations can only be performed in two separate processes. Separate testing leads to a longer overall test time, resulting in a too long test time. Utility Model Content

[0004] The technical problem to be solved by this application is that there are only single-function polymer battery hot pressing machines and polymer battery short-circuit testers on the market. Generally, the polymer battery hot pressing and short-circuit test operations can only be performed in two separate processes. Separate testing results in a longer overall test time, resulting in too long test time.

[0005] In order to solve the above technical problems or at least partially solve the above technical problems, the present application provides a testing device for soft-pack batteries.

[0006] The utility model discloses a testing device for soft-pack batteries, which includes a pressure mechanism, a heating mechanism, and a testing mechanism;

[0007] The heating mechanism comprises an upper heating plate and a lower heating plate, wherein the upper heating plate and the lower heating plate are arranged in parallel;

[0008] The pressure mechanism includes an output cylinder, the upper heating plate is installed on the output shaft of the output cylinder, and the testing mechanism is installed on a side edge of the upper heating plate.

[0009] Preferably, the pressure mechanism includes a pressure detection component, and the pressure detection component is connected to the output cylinder.

[0010] Preferably, it includes a box and a control module;

[0011] The box body includes a mounting portion and a control portion, the mounting portion is mounted below the control portion, and the control module is mounted inside the control portion;

[0012] The control module is respectively connected to the pressure mechanism, the heating mechanism and the testing mechanism;

[0013] The pressure mechanism, the heating mechanism and the testing mechanism are installed on the installation portion.

[0014] Preferably, the mounting portion includes a support rod, a first support plate, a second support plate and a third support plate;

[0015] Two ends of the support rod are respectively connected to the first support plate and the second support plate, the support rod passes through the second support plate, and the first support plate, the second support plate and the third support plate are arranged in parallel.

[0016] Preferably, the upper heating plate is fixedly connected to the second supporting plate, and the upper heating plate and the output cylinder are respectively connected to two opposite surfaces of the second supporting plate.

[0017] Preferably, the heating mechanism comprises a heat insulation plate, the heat insulation plate is mounted on the third support plate, and the lower heating plate is connected to the heat insulation plate.

[0018] Preferably, the testing mechanism includes an insulating spacer, two copper conductive blocks, an elastic member and a mounting bar;

[0019] The mounting bar is installed on one side of the second support plate, the two ends of the elastic member are respectively connected to the mounting bar and the copper conductive block, the insulating pad is connected to the third support plate, and the insulating pad is installed on one side of the lower heating plate.

[0020] Preferably, the two copper conductive blocks are arranged at intervals.

[0021] Preferably, the insulating spacer and the copper conductive block correspond in position.

[0022] Preferably, the box includes a safety light curtain, and the safety light curtain is arranged on the installation portion.

[0023] The above technical solution provided by this application has the following advantages compared with the existing technology:

[0024] The present application provides a testing device for soft-pack batteries. For the battery to be tested, a pressure mechanism and a heating mechanism apply pressure and high temperature to the battery to be tested, so that the battery to be tested is placed in a hot pressure environment. The testing mechanism tests the resistance value of the battery to be tested in the hot pressure environment, and judges the short circuit condition and insulation degree of the battery to be tested by the magnitude of the leakage current.

[0025] The pressure and temperature values ​​can be set as needed, and the operator can know the current insulation resistance value in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention, and together with the description, serve to explain the principles of the present invention.

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] Figure 1 A schematic structural diagram of a testing device for soft-pack batteries provided in this application;

[0029] Figure 2 Schematic diagram of the structure of a soft pack battery;

[0030] Figure 3 This is a schematic diagram of the connection structure of a box, pressure mechanism, heating mechanism and testing mechanism provided in this application.

[0031] Description of reference numerals:

[0032] 1. Testing device for soft-pack batteries; 2. Soft-pack batteries; 21. Battery cells; 22. Electrode pieces;

[0033] 11. Pressure mechanism; 111. Output cylinder; 112. Pressure detection element;

[0034] 12. Heating mechanism; 121. Heat insulation plate; 122. Upper heating plate; 123. Lower heating plate;

[0035] 13. Testing mechanism; 131. Insulating spacer; 132. Copper conductive block; 133. Elastic member; 134. Mounting bar;

[0036] 14. Box; 141. Mounting portion; 1411. Support rod; 1412. First support plate; 1413. Second support plate; 1414. Third support plate; 142. Control portion;

[0037] 15. Control module. DETAILED DESCRIPTION

[0038] To make the objectives, technical solutions, and advantages of this application more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0039] See Figure 1-3 The utility model discloses a testing device 1 for a soft-pack battery. The testing device can apply a hot pressure environment to a soft-pack battery 2 to perform a micro-short circuit test. The soft-pack battery 2 includes a battery cell 21 and a pole piece 22. The pole piece 22 is connected to the battery cell 21 and is arranged on one side of the battery cell 21.

[0040] The testing device includes a pressure mechanism 11, a heating mechanism 12, a testing mechanism 13, a box 14 and a control module 15. The box 14 includes a mounting portion 141 and a control portion 142. The mounting portion 141 is installed below the control portion 142. The control module 15 is installed in the control portion 142. The control module 15 is respectively connected to the pressure mechanism 11, the heating mechanism 12 and the testing mechanism 13. The pressure mechanism 11, the heating mechanism 12 and the testing mechanism 13 are installed on the mounting portion 141.

[0041] Specifically, for the battery to be tested, the pressure mechanism 11 and the heating mechanism 12 apply pressure and high temperature to place the battery to be tested in a hot pressure environment. The testing mechanism 13 tests the resistance value of the battery to be tested in the hot pressure environment, and judges the short circuit condition and insulation degree of the battery to be tested by the size of the leakage current.

[0042] The control module 15 also includes a control panel, a pressure gauge, and a resistance tester. These gauges provide information about the current pressure and resistance values. The control panel also allows for control and temperature readings, adjusting the applied pressure and enhancing operational convenience. Furthermore, the pressure and temperature values ​​can be set as needed, allowing the operator to obtain the current insulation resistance value in real time.

[0043] The mounting portion 141 includes a support rod 1411, a first support plate 1412, a second support plate 1413 and a third support plate 1414. The two ends of the support rod 1411 are respectively connected to the first support plate 1412 and the second support plate 1413. The support rod 1411 passes through the second support plate 1413. The first support plate 1412, the second support plate 1413 and the third support plate 1414 are arranged in parallel.

[0044] The pressure mechanism 11 includes an output cylinder 111 and a pressure detection component 112. The output cylinder 111 is installed on the first support plate 1412. The output shaft of the output cylinder 111 is connected to the second support plate 1413. The pressure detection component 112 is installed at the connection position between the output shaft of the output cylinder 111 and the second support plate 1413. The output cylinder 111 can drive the second support plate 1413 to move up and down along the support rod 1411, and the output cylinder 111 can apply force to the second support plate 1413.

[0045] Optionally, the pressure detection member 112 uses a pressure sensor to detect the magnitude of the force currently applied by the output cylinder 111 to the second support plate 1413, so as to obtain the real-time magnitude of the force, and the operator can change the magnitude of the applied force.

[0046] The heating mechanism 12 includes a heat insulation plate 121, an upper heating plate 122 and a lower heating plate 123. The upper heating plate 122 and the lower heating plate 123 are arranged in parallel. The upper heating plate 122 and the lower heating plate 123 can be relatively close to each other, thereby clamping the battery cell 21 of the soft-pack battery 2. The upper heating plate 122 is fixedly connected to the second support plate 1413. The upper heating plate 122 and the output cylinder 111 are respectively connected to two opposite surfaces of the second support plate 1413. The heat insulation plate 121 is installed on the third support plate 1414. The lower heating plate 123 is connected to the heat insulation plate 121. The pole piece 22 of the soft-pack battery 2 leaks out from one side of the upper heating plate 122 and the lower heating plate 123. The testing mechanism 13 is installed on one side of the upper heating plate 122, and the pole piece 22 corresponds to the position of the testing mechanism 13.

[0047] It can be understood that the upper heating plate 122 is installed on a surface of the second support plate 1413 close to the third support plate 1414. A heat insulation structure is provided between the upper heating plate 122 and the second support plate 1413 to isolate the upper heating plate 122 from heating the second support plate 1413. The heat insulation plate 121 and the lower heating plate 123 are sequentially installed on the third support plate 1414. The heat insulation plate 121 can isolate the lower heating plate 123 from heating the third support plate 1414. The upper heating plate 122 and the lower heating plate 123 are relatively arranged and driven by the output cylinder 111. The second support plate 1413 moves to move the upper heating plate 122 closer to or away from the lower heating plate 123. The battery cell 21 of the soft-pack battery 2 is clamped and heated by the upper heating plate 122 and the lower heating plate 123, thereby creating a hot pressing environment for the soft-pack battery 2. The soft-pack battery 2 is placed close to the sides of the upper heating plate 122 and the lower heating plate 123, and the electrode 22 of the soft-pack battery 2 is exposed from the side of the upper heating plate 122, that is, the electrode 22 is placed corresponding to the test mechanism 13, and the electrode 22 is in contact with the test mechanism 13, thereby testing the resistance value of the soft-pack battery 2.

[0048] The testing mechanism 13 includes an insulating pad 131, two copper conductive blocks 132, an elastic member 133 and a mounting bar 134. The mounting bar 134 is installed on one side of the second support plate 1413. The two ends of the elastic member 133 are respectively connected to the mounting bar 134 and the copper conductive block 132. The insulating pad 131 is connected to the third support plate 1414. The insulating pad 131 is installed on one side of the lower heating plate 123. The two copper conductive blocks 132 are arranged at intervals, and the insulating pad 131 and the copper conductive block 132 correspond in position.

[0049] Specifically, the insulating spacer 131 is installed on the side of the lower heating plate 123, the mounting bar 134 is installed on the side of the second support plate 1413, and the copper conductive block 132 and the elastic member 133 are installed on the mounting bar 134. The copper conductive block 132 and the elastic member 133 are facing the side of the lower heating plate 123. When the upper heating plate 122 and the lower heating plate 123 are relatively close and clamp the battery cell 21 of the soft-pack battery 2, the copper conductive block 132 and the insulating spacer 131 are relatively close and clamp the electrode 22 of the soft-pack battery 2. Since the copper conductive block 132 is connected to the elastic member 133, when the copper conductive block 132 is clamped by the insulating spacer 131, the elastic member 133 is compressed and the copper conductive block 132 moves toward the mounting bar 134, which can avoid excessive pressure on the electrode 22 and prevent damage to the electrode 22. The elastic member 133 will exert a reaction force on the copper conductive block 132 to ensure that the electrode 22 can be energized with the copper conductive block 132.

[0050] Two copper conductive blocks 132 are spaced apart and electrically connected to the control module 15. The control module 15 tests the copper conductive blocks 132. One copper conductive block 132 is used to connect to the positive electrode 22, and the other copper conductive block 132 is used to connect to the negative electrode 22. Grooves are provided on the insulating spacer 131, corresponding to the spacing between the two copper conductive blocks 132.

[0051] Optionally, the housing 14 includes a safety light curtain, which is disposed on the mounting portion 141. The safety light curtain is disposed at a height equal to the distance between the second support plate 1413 and the third support plate 1414. Since the second support plate 1413 and the third support plate 1414 are relatively close to each other and the second support plate 1413 is subjected to the force of the output cylinder 111, the provision of the safety light curtain can improve safety during manual operation and prevent a person's hands from being between the second support plate 1413 and the third support plate 1414 when the second support plate 1413 is lowered.

[0052] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0054] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0055] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0056] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0057] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0058] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, as long as these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

[0059] The above description is a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A testing device for soft pack batteries, characterized in that: Including pressure mechanism, heating mechanism, and testing mechanism; The heating mechanism comprises an upper heating plate and a lower heating plate, wherein the upper heating plate and the lower heating plate are arranged in parallel; The pressure mechanism includes an output cylinder, the upper heating plate is installed on the output shaft of the output cylinder, and the testing mechanism is installed on a side edge of the upper heating plate.

2. The testing device for soft pack batteries according to claim 1, characterized in that: The pressure mechanism includes a pressure detection component, and the pressure detection component is connected to the output cylinder.

3. The testing device for soft pack batteries according to claim 1, characterized in that: Including cabinet and control module; The box body includes a mounting portion and a control portion, the mounting portion is mounted below the control portion, and the control module is mounted inside the control portion; The control module is respectively connected to the pressure mechanism, the heating mechanism and the testing mechanism; The pressure mechanism, the heating mechanism and the testing mechanism are installed on the installation portion.

4. The testing device for soft pack batteries according to claim 1, characterized in that: The mounting portion includes a support rod, a first support plate, a second support plate and a third support plate; Two ends of the support rod are respectively connected to the first support plate and the second support plate, the support rod passes through the second support plate, and the first support plate, the second support plate and the third support plate are arranged in parallel.

5. The testing device for soft pack batteries according to claim 4, characterized in that: The upper heating plate is fixedly connected to the second supporting plate, and the upper heating plate and the output cylinder are respectively connected to two opposite surfaces of the second supporting plate.

6. The testing device for soft pack batteries according to claim 4, characterized in that: The heating mechanism includes a heat insulation plate, which is mounted on the third support plate, and the lower heating plate is connected to the heat insulation plate.

7. The testing device for soft pack batteries according to claim 4, characterized in that: The testing mechanism includes an insulating spacer, two copper conductive blocks, an elastic member and a mounting bar; The mounting bar is installed on one side of the second support plate, the two ends of the elastic member are respectively connected to the mounting bar and the copper conductive block, the insulating pad is connected to the third support plate, and the insulating pad is installed on one side of the lower heating plate.

8. The testing device for soft pack batteries according to claim 7, characterized in that: The two copper conductive blocks are arranged at intervals.

9. The testing device for soft pack batteries according to claim 7, characterized in that: The insulating spacer blocks correspond to the copper conductive blocks in position.

10. The testing device for soft pack batteries according to claim 3, characterized in that: The box body includes a safety light curtain, and the safety light curtain is arranged on the installation portion.

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