Device for measuring liquid retention coefficient of soft package battery

Abstract

The utility model provides a soft package battery liquid retention coefficient measuring device, and relates to the technical field of battery detection, the soft package battery liquid retention coefficient measuring device comprises a measuring device base and a measuring support column, a guide sleeve is provided with a clamping assembly, and the clamping assembly is used for clamping an air bag and can move downwards along the air bag; a weighing device is arranged on the measuring device base, and a receiver for receiving the electrolyte is arranged on the weighing device. According to the measuring device for the liquid retention coefficient of the soft package battery, the measuring supporting column is arranged on the measuring device base, the guide sleeve capable of ascending and descending is arranged on the measuring supporting column, the clamping assembly can ascend and descend through the guide sleeve, and when electrolyte in the air bag needs to be discharged, the clamping assembly clamps the air bag and moves downwards, so that the electrolyte in the air bag can be discharged, and the electrolyte in the air bag can be discharged. Therefore, the electrolyte in the air bag can be effectively discharged, namely the amount of the electrolyte which is not kept in the soft package battery is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of battery testing, and in particular to a device for measuring the liquid retention coefficient of a soft-pack battery. Background Technology

[0002] Existing technology calculates the liquid retention coefficient of soft-pack batteries by measuring the total weight of the air bags minus the average weight of the air bags. However, the weight of the air bags is affected by the precision and accuracy of the cutting machine and the weight of the aluminum-plastic film, leading to inaccurate estimation of the liquid retention coefficient.

[0003] Previously, the amount of unabsorbed electrolyte was manually cut open and wiped away to estimate the electrolyte retention in the battery cell. However, this method was prone to inaccurate measurements of unabsorbed electrolyte due to incomplete or inadequate wiping. Another method involved machine-cutting the air bags, directly weighing them after cutting (the weight of the air bag includes both electrolyte and the bag itself). However, this method was affected by machine cutting issues, resulting in a non-constant weight value for the air bag (the weight of the air bag was not calculated separately when processing the electrolyte retention; only a fixed value was deducted), leading to errors in the test. Utility Model Content

[0004] The purpose of this invention is to provide a device for measuring the liquid retention coefficient of soft-pack batteries, so as to alleviate the technical problem of large measurement errors in the current liquid retention coefficient measurement process.

[0005] This utility model provides a device for measuring the liquid retention coefficient of a soft-pack battery, including a base for the measuring device and a measuring support column, wherein the measuring support column is disposed on the base for the measuring device.

[0006] A first support frame is provided on the measuring support column, and two fixing clips are provided on the first support frame. The two fixing clips are respectively used to hold the positive electrode tab and the negative electrode tab of the soft pack battery.

[0007] A guide sleeve is fitted onto the measuring support column, and the guide sleeve is located at the lower end of the first support frame;

[0008] A clamping assembly is provided on the guide sleeve, the clamping assembly being used to clamp the air bag and being able to move downward along the air bag;

[0009] A weighing device is provided on the base of the measuring device, and a receiver for receiving electrolyte is provided on the weighing device.

[0010] In an optional embodiment, the measuring support column is provided with scale lines.

[0011] In an optional embodiment, a first fixing sleeve is provided on the first support frame, the first fixing sleeve is sleeved on the measuring support column, and a first locking member is provided on the first fixing sleeve, the first locking member abutting against the measuring support column.

[0012] In an optional embodiment, the clamping assembly includes a first connecting plate, and clamping fixing plates are respectively provided at both ends of the first connecting plate, and the clamping fixing plates extend along a first direction;

[0013] A clamping area is formed between the two clamping plates, and a clamping member is provided on the side of the clamping plate facing the other clamping plate, and the clamping member has a tendency to move away from the clamping plate.

[0014] In an optional embodiment, the clamping fixing plate is provided with at least telescopic holes, the clamping member is provided with telescopic rods corresponding to the telescopic holes, and the telescopic rods are assembled in the telescopic holes;

[0015] A limiting member is provided at the end of the telescopic rod away from the clamping member.

[0016] In an optional embodiment, the telescopic rod is provided with a telescopic spring, and the telescopic spring is located between the clamping fixing plate and the clamping member.

[0017] In an optional embodiment, at least one of the clamping elements is a magnet, and both clamping elements have a tendency to move within the clamping area.

[0018] In an optional embodiment, both clamping elements are magnets, and the two clamping elements are magnetically attracted to each other.

[0019] In an optional embodiment, a lower support sleeve is provided on the measuring support column, and the lower support sleeve is fitted onto the measuring support column, and a third locking member is provided on the lower support sleeve.

[0020] In an optional embodiment, the fixing clip is made of plastic.

[0021] The measuring device for determining the liquid retention coefficient of a soft-pack battery provided by this utility model has a measuring support column on its base, and a guide sleeve that can be raised and lowered is provided on the measuring support column. The guide sleeve allows the clamping component to be raised and lowered. When it is necessary to drain the electrolyte in the gas bag, the clamping component clamps the gas bag and moves downward, which can effectively drain the electrolyte in the gas bag, which is the amount of liquid not retained in the soft-pack battery. The measuring device for determining the liquid retention coefficient of a soft-pack battery reduces the need for large mechanical cutting devices, and also reduces human operation errors caused by manually wiping unabsorbed electrolyte, thereby improving the accuracy and convenience of measuring the liquid retention amount and liquid retention coefficient of soft-pack batteries. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the structure of the soft-pack battery liquid retention coefficient measuring device provided in this embodiment of the utility model;

[0024] Figure 2 for Figure 1 The diagram shows the structure of the clamping assembly of the soft-pack battery liquid retention coefficient measuring device.

[0025] Icons: 100-Base of measuring device; 200-Measuring support column; 300-First fixing sleeve; 400-Guide sleeve; 500-Lower support sleeve; 600-Receiver; 700-Weighing device; 800-Air bag; 900-Fixing clamp; 110-Clamping assembly; 111-First connecting plate; 112-Clamping fixing plate; 113-Clamping component; 114-Telescopic rod; 115-Limiting component. Detailed Implementation

[0026] The terms “first,” “second,” “third,” etc., are used only for distinguishing descriptions and do not indicate a sequence number, nor should they be interpreted as indicating or implying relative importance.

[0027] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of this application, it should be noted that the terms "inner", "outer", "left", "right", "upper", "lower", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0029] In the description of this application, unless otherwise expressly specified and limited, the terms “set up,” “install,” “connect,” and “link” shall be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; as a direct connection or an indirect connection through an intermediate medium; or as a connection within two components.

[0030] The technical solution of this application will now be clearly and completely described with reference to the accompanying drawings.

[0031] Example

[0032] Reference Figures 1-2 This utility model provides a device for measuring the liquid retention coefficient of a soft-pack battery, including a measuring device base 100 and a measuring support column 200, wherein the measuring support column 200 is disposed on the measuring device base 100.

[0033] A first support frame is provided on the measuring support column 200, and two fixing clips 900 are provided on the first support frame. The two fixing clips 900 are respectively used to hold the positive electrode tab and the negative electrode tab of the soft pack battery.

[0034] A guide sleeve 400 is fitted onto the measuring support column 200, and the guide sleeve 400 is located at the lower end of the first support frame;

[0035] A clamping assembly 110 is provided on the guide sleeve 400. The clamping assembly 110 is used to clamp the air bag 800 and can move downward along the air bag 800.

[0036] A weighing device 700 is provided on the base 100 of the measuring device, and a receiver 600 for receiving electrolyte is provided on the weighing device 700.

[0037] In some embodiments, the measuring device base 100 of the soft-pack battery liquid retention coefficient measuring device is provided with a measuring support column 200. The side-fixed support column is located at one end of the side-fixed device base in a first direction, which is the length direction of the measuring device base 100. A first support frame is provided on the side-fixed support column, and two fixing clips 900 are provided on the first support frame. The fixing clips 900 are used to hold the positive and negative tabs of the soft-pack battery. The fixing clips 900 are generally made of insulating material, which can effectively prevent the soft-pack battery from short-circuiting when the first support frame holds the soft-pack battery.

[0038] During the measurement process, the soft-pack battery is fixed on the first support frame, and a weighing device 700 is set below the air bag 800. Generally, a balance of 0.1% is selected. A receiver 600 is set on the weighing device 700 to receive the electrolyte flowing out of the air bag 800.

[0039] When it is necessary to use the clamping component 110 to squeeze the air bag 800, the clamping component 110 clamps the upper end of the air bag 800 and moves downward by its own weight, thereby squeezing the electrolyte inside the air bag 800; the electrolyte inside the air bag 800 flows out from the lower end of the air bag 800, thus completing the squeezing of the electrolyte, ensuring standard uniformity, and reducing errors caused by human operation.

[0040] In an optional embodiment, the measuring support column 200 is provided with scale lines.

[0041] The scale lines allow for effective adjustment of the gap between the first support frame and the guide sleeve 400, as well as the height of the first support frame and the guide sleeve 400, ensuring uniformity of standards.

[0042] In an optional embodiment, a first fixing sleeve 300 is provided on the first support frame, the first fixing sleeve 300 is sleeved on the measuring support column 200, and a first locking member is provided on the first fixing sleeve 300, the first locking member abutting against the measuring support column 200.

[0043] In some embodiments, a first fixing sleeve 300 is provided on the first support frame, and the height of the first support frame can be adjusted, thereby increasing the applicability of the soft-pack battery liquid retention coefficient measuring device; when it is necessary to fix the position of the first fixing sleeve 300, the first locking member is rotated and abutted against the measuring support column 200, thereby fixing the position of the first support frame on the measuring support column 200.

[0044] When it is necessary to move the position of the first support frame, the first locking element is loosened, and the first fixing sleeve 300 can move up and down along the measuring support column 200.

[0045] Reference Figure 2 In an optional embodiment, the clamping assembly 110 includes a first connecting plate 111, and clamping fixing plates 112 are respectively provided at both ends of the first connecting plate 111, and the clamping fixing plates 112 extend along a first direction.

[0046] A clamping area is formed between the two clamping plates 112, and a clamping member 113 is provided on the side of the clamping plate 112 facing the other clamping plate 112, and the clamping member 113 has a tendency to move away from the clamping plate 112.

[0047] In some embodiments, a clamping fixing plate 112 is provided at each end of the first connecting plate 111 of the clamping assembly 110, and there is a certain gap between the two clamping fixing plates 112, forming a clamping area between the two clamping fixing plates 112; the air bag 800 is located in the clamping area, and clamping members 113 are provided on the clamping fixing plate 112, and the two clamping members 113 cooperate to clamp the air bag 800; when the clamping assembly 110 moves downward, the two clamping members 113 cooperate to make the electrolyte in the air bag 800 flow downward and finally flow out from the air bag 800.

[0048] In an optional embodiment, the clamping fixing plate 112 is provided with at least telescopic holes, the clamping member 113 is provided with telescopic rods 114 corresponding to the telescopic holes, and the telescopic rods 114 are assembled in the telescopic holes;

[0049] A limiting member 115 is provided at the end of the telescopic rod 114 away from the clamping member 113.

[0050] In some embodiments, two telescopic holes are provided on the clamping and fixing plate 112, and a telescopic rod 114 is provided on the clamping member 113. The telescopic rod 114 is assembled in the telescopic holes. In order to prevent the telescopic rod 114 from detaching from the telescopic holes, a limiting member 115 is provided at one end of the telescopic rod 114. The limiting member 115 is detachably connected to the telescopic rod 114, so that the telescopic rod 114 can be inserted into the telescopic holes and then the limiting member 115 can be assembled. The telescopic rod 114 can be a threaded rod, and the limiting member 115 can be a nut.

[0051] In an optional embodiment, a telescopic spring is provided on the telescopic rod 114, and the telescopic spring is located between the clamping fixing plate 112 and the clamping member 113.

[0052] In some embodiments, in order to enable the two clamping members 113 to maintain a tendency to move toward the air bag 800, a telescopic spring is provided on the telescopic rod 114. The telescopic spring is in a compressed state, and the telescopic spring makes the clamping members 113 always tend to move away from the clamping fixing member. In this way, the two clamping members 113 can effectively clamp the air bag 800, and when the clamping assembly 110 descends, it squeezes the electrolyte in the air bag 800 downward.

[0053] In an optional embodiment, at least one of the clamping members 113 is a magnet, and both of the clamping members 113 have a tendency to move within the clamping area.

[0054] In an optional embodiment, both clamping members 113 are magnets, and the two clamping members 113 are magnetically attracted to each other.

[0055] In some embodiments, both clamping members 113 are plate-shaped, wherein at least one clamping member 113 is a magnet, so that the two clamping members 113 can clamp the air bag 800 and move downward along the air bag 800; or both clamping members 113 may be magnets, or have magnets inside and a metal layer wrapped around the magnets; the air bag 800 is clamped by the magnetic attraction of the two clamping members 113; during the downward movement of the clamping assembly 110, the electrolyte inside the air bag 800 is squeezed, causing the electrolyte to flow downward.

[0056] In an optional embodiment, a lower support sleeve 500 is provided on the measuring support column 200, and the lower support sleeve 500 is sleeved on the measuring support column 200, and a third locking member is provided on the lower support sleeve 500.

[0057] To prevent the clamping assembly 110 from colliding directly with the measuring device base 100, a lower support sleeve 500 is provided on the measuring support column 200. The lower support sleeve 500 is used to support the guide sleeve 400 and prevent the guide sleeve 400 from descending excessively, which would cause the clamping assembly 110 to collide with other objects.

[0058] In order to adjust the descent range of the guide sleeve 400, a third locking element is provided on the lower support sleeve 500. The third locking element allows the lower support sleeve 500 to rise and fall within a certain range, so that the lower support sleeve 500 can be adjusted according to the specifications of the soft-pack battery.

[0059] The measuring device base 100 of the soft-pack battery liquid retention coefficient measuring device provided by this utility model has a measuring support column 200. A guide sleeve 400 that can be raised and lowered is provided on the measuring support column 200. The guide sleeve 400 allows the clamping component 110 to be raised and lowered. When it is necessary to discharge the electrolyte in the air bag 800, the clamping component 110 clamps the air bag 800 and moves it downward, which can effectively discharge the electrolyte in the air bag 800, which is the amount of liquid not retained in this soft-pack battery. The soft-pack battery liquid retention coefficient measuring device reduces the need for large mechanical cutting devices, and also reduces the human operation error caused by manual wiping of unabsorbed electrolyte, improving the accuracy and convenience of the liquid retention amount and liquid retention coefficient of soft-pack batteries.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for measuring the liquid retention coefficient of a soft-pack battery, characterized in that, It includes a measuring device base (100) and a measuring support column (200), wherein the measuring support column (200) is disposed on the measuring device base (100); A first support frame is provided on the measuring support column (200), and two fixing clips (900) are provided on the first support frame. The two fixing clips (900) are respectively used to clamp the positive electrode tab and the negative electrode tab of the soft pack battery. A guide sleeve (400) is fitted on the measuring support column (200), and the guide sleeve (400) is located at the lower end of the first support frame; A clamping assembly (110) is provided on the guide sleeve (400), the clamping assembly (110) is used to clamp the air bag (800) and can move downward along the air bag (800); A weighing device (700) is provided on the base (100) of the measuring device, and a receiver (600) for receiving electrolyte is provided on the weighing device (700).

2. The device for determining the liquid retention coefficient of a soft-pack battery according to claim 1, characterized in that, The measuring support column (200) is equipped with scale lines.

3. The device for determining the liquid retention coefficient of a soft-pack battery according to claim 1, characterized in that, The first support frame is provided with a first fixing sleeve (300), which is sleeved on the measuring support column (200), and a first locking member is provided on the first fixing sleeve (300), which abuts against the measuring support column (200).

4. The device for determining the liquid retention coefficient of a soft-pack battery according to claim 1, characterized in that, The clamping assembly (110) includes a first connecting plate (111), and clamping fixing plates (112) are respectively provided at both ends of the first connecting plate (111), and the clamping fixing plates (112) extend along a first direction; A clamping area is formed between the two clamping plates (112), and a clamping member (113) is provided on the side of the clamping plate (112) facing the other clamping plate (112), and the clamping member (113) has a tendency to move away from the clamping plate (112).

5. The device for determining the liquid retention coefficient of a soft-pack battery according to claim 4, characterized in that, The clamping fixing plate (112) is provided with at least one telescopic hole, and the clamping member (113) is provided with a telescopic rod (114) corresponding to the telescopic hole, and the telescopic rod (114) is assembled in the telescopic hole; A limiting member (115) is provided at the end of the telescopic rod (114) away from the clamping member (113).

6. The device for determining the liquid retention coefficient of a soft-pack battery according to claim 5, characterized in that, The telescopic rod (114) is provided with a telescopic spring, and the telescopic spring is located between the clamping fixing plate (112) and the clamping member (113).

7. The device for determining the liquid retention coefficient of a soft-pack battery according to claim 5, characterized in that, At least one of the clamping members (113) is a magnet, and both of the clamping members (113) have a tendency to move in the clamping area.

8. The device for determining the liquid retention coefficient of a soft-pack battery according to claim 7, characterized in that, Both of the clamping members (113) are magnets, and the two clamping members (113) are magnetically attracted to each other.

9. The device for determining the liquid retention coefficient of a soft-pack battery according to claim 1, characterized in that, The measuring support column (200) is provided with a lower support sleeve (500), and the lower support sleeve (500) is sleeved on the measuring support column (200). A third locking member is provided on the lower support sleeve (500).

10. The device for determining the liquid retention coefficient of a soft-pack battery according to claim 1, characterized in that, The fixing clip (900) is made of plastic.

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