CN217425463U - Auxiliary tool for battery test - Google Patents

Abstract

The utility model provides an auxiliary tool for battery test, which comprises a bottom plate, a pressing component, a connecting component and a pressure measuring component; the bottom plate is used for supporting the battery; the lower pressing assembly comprises an upper pressing plate, a lower pressing plate and an elastic piece connected between the upper pressing plate and the lower pressing plate, and the lower pressing plate is used for pressing the battery; the connecting assembly is connected between the upper pressure plate and the bottom plate; the pressure measuring component comprises a measuring body and a pressure measuring part, wherein the measuring body is arranged on the lower pressure plate and penetrates through the upper pressure plate, the pressure measuring part is arranged on the measuring body, and the pressure measuring part is used for measuring the pressure corresponding to the sliding distance of the measuring body relative to the upper pressure plate. Auxiliary fixtures is used in battery test, can realize being connected between top board and the floor through coupling assembling, and then can make the battery by the centre gripping between bottom plate and holding down plate to through locating the measurement body on the holding down plate and locating the survey splenium on the measurement body, do benefit to the pressurize power of measuring the battery, simultaneously, be convenient for test soft package electricity core, and do benefit to and reduce test cost.

Description

Auxiliary tool for battery test

Technical Field

The utility model relates to a battery test equipment technical field, in particular to battery test is with auxiliary fixtures.

Background

According to different battery chemical systems and different holding pressures in the testing process, the soft package battery can be divided into a traditional liquid soft package battery, a semi-solid soft package battery and an all-solid soft package battery. The content of the electrolyte in the three types of soft package batteries is gradually reduced until no electrolyte exists. At present, in order to ensure the safety of the soft package battery, the soft package battery is generally required to be tested.

Based on laminate polymer battery's structural feature, for the performance of guaranteeing laminate polymer battery, need certain external pressure to guarantee the contact of each component among the laminate polymer battery usually in the test procedure, judge the inflation size through increasing pressure gauge probe and test battery in the anchor clamps in close contact with.

Three types of batteries of traditional liquid laminate polymer battery, semi-solid laminate polymer battery and all solid state laminate polymer battery increase in proper order the pressure size in the test process, and especially all solid state battery has adopted the organic liquid electrolyte of incombustibility to replace by incombustible solid electrolyte, has promoted battery system's security by a wide margin, realizes energy density synchronous promotion.

When the solid electrolyte is adopted to prepare the all-solid-state electric core system, solid-solid contact is carried out among the electrolytes, between the electrolytes and the conductive agent, between the electrolytes and the active substance, between the conductive agent and the active substance and between the electrode and the electrolyte membrane, and internal resistance is generated in the prepared all-solid-state soft package battery due to poor interface contact. Therefore, when testing the all-solid-state soft package battery, an external pressure device is required to pressurize and hold the pressure for a long time so as to reduce the internal resistance of the battery.

Traditional battery test is with frock when exerting pressure at every turn, must use the pressure gauge to embody and add guarantor's pressure size, influence pressurization efficiency, and the pressure gauge can be generally removed after the pressurize, the change of unable observation pressurize in-process battery bulging force and shrink degree, perhaps can only need remain pressure gage probe between the clamp plate of each battery and frock in the testing process, the bulging force or the shrink degree in observing the battery testing process, this needs to increase more pressure gauges undoubtedly, thereby the test cost to laminate polymer battery has been increased.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a battery test is with auxiliary fixtures to test the battery, and do benefit to the pressurize power that detects the battery.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

an auxiliary tool for a battery test comprises a bottom plate, a pressing component, a connecting component and a pressure measuring component;

the bottom plate is used for supporting the battery;

the lower pressing assembly comprises an upper pressing plate and a lower pressing plate which are arranged in parallel up and down, and an elastic piece connected between the upper pressing plate and the lower pressing plate, and the lower pressing plate is used for pressing the battery;

the connecting assembly is connected between the upper pressure plate and the bottom plate and is used for adjusting the distance between the upper pressure plate and the bottom plate;

the pressure measuring assembly comprises a measuring body and a pressure measuring part, wherein the measuring body is arranged on the lower pressure plate and penetrates through the upper pressure plate, the pressure measuring part is arranged on the measuring body, and the pressure measuring part is used for measuring the pressure corresponding to the sliding distance of the measuring body relative to the upper pressure plate.

Further, the pressure measuring part includes a plurality of scales arranged at intervals in a height direction of the measuring body.

Further, the connecting assembly comprises a plurality of bolt pairs arranged between the bottom plate and the upper pressure plate in a penetrating mode.

Furthermore, the bottom of the bottom plate is provided with an embedded groove for embedding a bolt head in the bolt pair;

the embedded groove is used for limiting the rotation of the bolt head relative to the bottom plate.

Furthermore, the lower pressing plate is arranged on the plurality of bolt pairs in a sliding mode.

Further, the elastic piece adopts a spring; the bottom of the upper pressure plate and the top of the lower pressure plate are respectively provided with a convex part, and two ends of the spring are respectively sleeved and connected outside the corresponding convex parts.

Further, the springs comprise a first spring arranged corresponding to the middle of the battery and a plurality of second springs arranged at intervals in the circumferential direction around the first spring;

the diameter of the first spring is greater than the diameter of the second spring.

Further, corresponding to the two sides of the battery, the bottom of the lower pressing plate and the top of the bottom plate are both provided with buffer layers.

Further, the batteries are arranged in a vertically stacked manner; and a partition plate is arranged between every two adjacent batteries, and buffer layers are arranged at the top and the bottom of the partition plate.

Further, the partition plate is guided to slide on the bottom plate.

Compared with the prior art, the utility model discloses following advantage has:

auxiliary fixtures is used in battery test, can realize being connected between top board and the floor through coupling assembling, and then can make the battery by the centre gripping between bottom plate and holding down plate to through locating the measurement body on the holding down plate and locating the survey splenium on the measurement body, do benefit to the pressurize power of measuring the battery, simultaneously, be convenient for test soft-packaged electrical core, and do benefit to and reduce test cost.

In addition, the scale is simple in structure and convenient to arrange and implement on the measuring body. The bolt pair is simple in structure and good in connecting effect. The embedded groove is simple in structure, the bolt head can be prevented from rotating relative to the bottom plate, and the using effect of the bolt pair is further improved. The spring is simple in structure, mature in product and good in elastic connection effect. The first spring is larger than the second spring in diameter, so that the stability of the battery in the test is improved.

In addition, the buffer layer between the lower pressing plate and the bottom plate is beneficial to improving the safety of the battery in the test. A plurality of batteries are tested through the separation of the partition plates, and the test efficiency of the auxiliary tool for the battery test is improved. The guide sliding of the partition plate on the bottom plate is beneficial to improving the stability of the battery in the test.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic structural diagram of an auxiliary tool for battery testing according to an embodiment of the present invention at a first viewing angle;

fig. 2 is a schematic structural diagram of an auxiliary tool for battery testing according to an embodiment of the present invention at a second viewing angle;

fig. 3 is a schematic structural diagram of an auxiliary tool for battery testing according to an embodiment of the present invention at a third viewing angle;

fig. 4 is a schematic structural diagram of a bottom plate according to an embodiment of the present invention;

fig. 5 is a schematic structural view of an upper platen according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a lower pressing plate according to an embodiment of the present invention;

description of reference numerals:

1. a base plate; 101. embedding a groove;

2. an upper pressure plate; 201. a first upper projection; 202. a second upper projection; 203. a through hole;

3. a lower pressing plate; 301. a measuring body; 3011. calibration; 302. a second lower projection; 303. a first lower projection;

4. a bolt pair; 401. a rod body; 402. a nut; 403. a bolt head;

5. a battery;

6. a buffer layer;

7. an elastic member; 701. a first spring; 702. a second spring;

8. a separator.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that, if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "back", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms first, second, etc. in this specification are not necessarily all referring to the same item, but are instead intended to cover the same item.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The embodiment relates to an auxiliary fixtures is used in battery test, wholly constitutes, and this auxiliary fixtures is used in battery test includes bottom plate 1, pushes down subassembly, coupling assembling and pressure measurement subassembly. The bottom plate 1 is used for supporting a battery 5; the lower pressing assembly comprises an upper pressing plate 2 and a lower pressing plate 3 which are arranged in an up-down parallel mode, and an elastic piece 7 connected between the upper pressing plate 2 and the lower pressing plate 3, wherein the lower pressing plate 3 is used for pressing the batteries 5.

The connecting assembly is connected between the upper pressure plate 2 and the bottom plate 1 and is used for adjusting the distance between the upper pressure plate 2 and the bottom plate 1. The pressure measuring assembly comprises a measuring body 301 which is arranged on the lower pressure plate 3 and penetrates through the upper pressure plate 2, and a pressure measuring part arranged on the measuring body 301, wherein the pressure measuring part is used for measuring pressure corresponding to the sliding distance of the measuring body 301 relative to the upper pressure plate 2.

Based on the above general description, an exemplary structure of the auxiliary tool for battery test described in this embodiment is shown in fig. 1 to 3. The battery 5 in this embodiment is specifically a pouch battery 5, and the bottom plate 1 is used as a main body for bearing the battery 5, and the cross section of the main body is rectangular, so that the structure is simple, and the arrangement and implementation are convenient. Preferably, the upper press plate 2 and the lower press plate 3 are located directly above the base plate 1, and both are also rectangular in cross section. Of course, the cross-section of the bottom plate 1, the upper press plate 2 and the lower press plate 3 may also take a geometrical shape other than rectangular, according to the specific use requirements.

The thicknesses of the upper press plate 2, the lower press plate 3 and the bottom plate 1 in the embodiment are preferably greater than or equal to 6mm, and when the pressure maintaining force is small, the upper press plate 2, the lower press plate 3 and the bottom plate 1 can be made of wood plates or resin materials for reducing the weight of the tool and achieving the purpose of reducing the cost. When the pressure maintaining force is large, the upper press plate 2, the lower press plate 3 and the bottom plate 1 can be made of stainless steel or other alloy materials to ensure the strength of the tool.

The elastic piece 7 in the embodiment adopts a spring, the product is mature, and the elastic connection between the upper pressing plate 2 and the lower pressing plate 3 is favorably realized. For the connection effect who improves the spring, be equipped with the bulge respectively in the bottom of top board 2 and the top of holding down plate 3 in this embodiment, the both ends of spring are established respectively to overlap and are connected outside the bulge that corresponds. Here, the simple structure of bulge not only does benefit to the installation that realizes the spring, still does benefit to the stability that improves the spring in use. Simultaneously, the setting of bulge still does benefit to and prevents that the spring from taking place the risk of bouncing because of the atress inequality or test temperature variation.

In detail, referring to fig. 1, 5 and 6, the spring in the present embodiment includes a first spring 701 disposed corresponding to the middle of the battery 5, and a plurality of second springs 702 disposed at intervals in the circumferential direction around the first spring 701. Here, for convenience of description, in the present embodiment, the protrusion for connecting the top of the first spring 701 is referred to as a first upper protrusion 201, and the protrusion for connecting the bottom of the first spring 701 is referred to as a first lower protrusion 303. Accordingly, the protrusion for connecting the top of the second spring 702 is referred to as a second upper protrusion 202, and the protrusion for connecting the bottom of the second spring 702 is referred to as a second lower protrusion 302.

In this embodiment, the diameters of the first upper protruding portion 201 and the first lower protruding portion 303 are smaller than the inner diameter of the first spring 701 and larger than 90% of the inner diameter of the first spring 701. The diameters of second upper projection 202 and second lower projection 302 are smaller than the inner diameter of second spring 702 and greater than 90% of the inner diameter of second spring 702. The sum of the lengths of first upper protrusion 201 and first lower protrusion 303 is less than or equal to the maximum compression critical length value of first spring 701 and is greater than 70% of the maximum compression critical length value of first spring 701, and the sum of the lengths of second upper protrusion 202 and second lower protrusion 302 is less than or equal to the maximum compression critical length value of second spring 702 and is greater than 70% of the maximum compression critical length value of second spring 702.

Wherein, two second upper protrusions 202 are respectively disposed at both sides of the first upper protrusion 201, so that the four second springs 702 surround the first spring 701, which is advantageous for concentrating the pressure at the middle, thereby improving the stability of the spring in use. Preferably, the diameter of the first spring 701 is larger than the diameter of the second spring 702. For example, the diameter of the first spring 701 is larger than twice the diameter of the second spring 702, and accordingly, the diameters of the first upper protrusion 201 and the first lower protrusion 303 are each larger than twice the diameter of the second upper protrusion 202 and the second lower protrusion 302. In this way, it is further facilitated that the pressure is more concentrated in the middle.

It can be understood that, in this embodiment, the number and the specification of the springs can be adaptively increased or decreased according to the requirement, as long as the requirement of use is satisfied.

Referring to fig. 1, 2 and 6, the measuring body 301 is generally cylindrical, and is located in the middle of the lower press plate 3 in the width direction and between the two second lower protrusions. A through hole 203 is provided in the upper platen 2 corresponding to the measuring body 301, and the measuring body 301 is provided through the upper platen 2 via the through hole 203. The pressure measuring section in the present embodiment includes a plurality of scales 3011 arranged at intervals in the height direction of the measuring body 301.

In order to obtain the corresponding pressure through the sliding distance of the measuring body 301 relative to the upper platen 2, in this embodiment, a pressure gauge is used to calibrate the pressure value corresponding to each scale 3011 in advance, and a reference table of the scale 3011 corresponding to the pressure value and the corresponding pressure is made.

In specific implementation, after the connecting assembly fixes the distance between the upper pressing plate 2 and the bottom plate 1, when the lower pressing plate 3 is not stressed, the pressure corresponding to the scale 3011 of the initial value on the measuring body 301 is 0, a part of the scale 3011 is gradually increased from the bottom to the top by the initial scale 3011, and a part of the scale 3011 is gradually increased from the top to the bottom by the initial scale 3011. When the pressure maintaining force of the battery 5 changes, the value of the scale 3011 on the measuring body 301 corresponding to the upper surface of the upper pressure plate 2 increases or decreases due to the sliding of the lower pressure plate 3 relative to the upper pressure plate 2, and at this time, the pressure maintaining force of the battery 5 is obtained according to the pressure corresponding to the value of the scale 3011 on the reference table, so that the pressure maintaining force does not need to be determined by using a pressure gauge every time.

Due to the arrangement of the measuring body 301 and the scale 3011, the testing cost of the pressure keeping of the battery 5 is low, and the use is convenient. In addition, because the pressure value calibration column is positioned on the lower pressing plate 3 which is in direct contact with the battery 5, the expansion and contraction of the battery 5 can cause the change of the reading of the pressure value calibration column scale 3011 in the test process, and the change of the internal force of the battery 5 and the size of the expansion and contraction rate can be judged or recorded in time, so that the performance of the battery 5 can be deduced conveniently.

The connecting members in this embodiment are plural ones connected between the upper platen 2 and the bottom plate 1, and preferably, as shown in fig. 1, the connecting members are four ones connected at four corners between the upper platen 2 and the bottom plate 1, respectively. In specific implementation, the connecting assembly in this embodiment includes a plurality of bolt pairs 4 penetrating between the bottom plate 1 and the upper pressure plate 2. The rod body 401 of the bolt pair 4 sequentially penetrates through the bottom plate 1 and the upper pressure plate 2 from bottom to top, the bolt head 403 of the bolt pair 4 is limited on the bottom plate 1, and the nut 402 of the bolt pair 4 is positioned above the upper pressure plate 2. Here, the bolt pair 4 is mature, facilitating the connection and the adjustment of the distance between the upper press plate 2 and the base plate 1.

As shown in fig. 3 and 4, in order to improve the effect of the bolt pair 4 in use, the bottom of the bottom plate 1 is provided with an embedding groove 101 for embedding a bolt head 403 in the bolt pair 4; the groove 101 is for restricting the rotation of the bolt head 403 with respect to the bottom plate 1. For example, if the cross section of the bolt head 403 is hexagonal, the cross section of the embedding groove 101 is also hexagonal, and the cross-sectional area of the bolt head 403 is slightly larger than the cross-sectional area of the embedding groove 101, so that the rod body 401 is prevented from rotating when the nut 402 is screwed.

In addition, the lower pressing plate 3 in this embodiment is slidably disposed on the rod 401 of the plurality of bolt pairs 4, so that the sliding lower pressing plate 3 can be guided by the rod 401, thereby improving the stability of the lower pressing plate 3 when the battery 5 is pressed down.

In order to improve the testing effect of the battery 5 under a large pressure, in this embodiment, the buffer layers 6 are disposed on the bottom of the lower pressing plate 3 and the top of the bottom plate 1 corresponding to the two sides of the battery 5. The buffer layer 6 is preferably made of nylon material. The buffer layer 6 made of nylon material does not damage the internal structure of the battery 5 due to the extension deformation. Meanwhile, even if the buffer layer 6 made of the nylon material deforms, the deformation also occurs along with the shape change of the battery 5, and the deformation of the buffer layer 6 is irreversible, so that the battery 5 is prevented from being damaged under a high-pressure condition, the performance and the standardized test of the soft package battery 5, particularly the all-solid-state soft package battery 5, are facilitated, and the test safety is improved. Of course, when the holding pressure is small, the lower pressing plate 3 and the base plate 1 may be engaged to press the battery 5 without providing the buffer layer 6.

In addition, in order to improve the testing efficiency of the auxiliary tool for battery testing, the plurality of batteries 5 in the embodiment are stacked up and down. In order to improve the stability in the test, a partition plate 8 is arranged between two adjacent batteries 5, and the partition plate 8 is guided to slide on the bottom plate 1. In a specific structure, as shown in fig. 1 and fig. 2, the partition plate 8 is also slidably sleeved on the rod body 401 of each bolt pair 4, so that the stability of the partition plate 8 in use and the accuracy of the test are improved. Of course, the partition 8 can be guided to slide on the bottom plate 1 by a plurality of guiding posts arranged on the bottom plate 1, but the cost of the whole tool is increased. It is understood that when the holding pressure is higher, the buffer layers 6 can be arranged on the top and the bottom of the partition plate 8, and the buffer layers 6 can also be made of nylon materials.

During specific implementation, the distance and the strength generated by the thickness of the partition plate 8 in the embodiment can also effectively avoid the influence between the batteries 5, thereby improving the space utilization rate and the testing accuracy when testing the batteries 5 in the high-low temperature box.

This embodiment auxiliary fixtures is used in battery test can realize being connected between top board 2 and the floor through coupling assembling, and then can make battery 5 by the centre gripping between bottom plate 1 and holding down plate 3 to through locating the measuring body 301 on holding down plate 3 and locating the pressure measuring portion on the measuring body 301, do benefit to measuring battery 5's guarantor's pressure, bulging force or contractility, simultaneously, be convenient for test laminate polymer core, and do benefit to and reduce test cost. Meanwhile, the auxiliary tool for the battery test in the embodiment is convenient to mount and dismount, so that the convenience in operation is improved.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides an auxiliary fixtures is used in battery test which characterized in that:

the device comprises a bottom plate (1), a pressing component, a connecting component and a pressure measuring component;

the bottom plate (1) is used for supporting a battery (5);

the pressing assembly comprises an upper pressing plate (2) and a lower pressing plate (3) which is connected below the upper pressing plate (2) in a sliding mode through an elastic piece (7), and the lower pressing plate (3) is used for pressing the battery (5) downwards;

the connecting assembly is connected between the upper pressure plate (2) and the bottom plate (1), and is used for adjusting the distance between the upper pressure plate (2) and the bottom plate (1);

the pressure measuring assembly comprises a measuring body (301) arranged on the lower pressing plate (3) and penetrating through the upper pressing plate (2), and a pressure measuring part arranged on the measuring body (301), wherein the pressure measuring part is used for measuring the pressure corresponding to the sliding distance of the measuring body (301) relative to the upper pressing plate (2).

2. The auxiliary tool for battery test of claim 1, wherein:

the pressure measurement portion includes a plurality of scales (3011) arranged at intervals in a height direction of the measurement body (301).

3. The auxiliary tool for battery test of claim 1, wherein:

the connecting assembly comprises a plurality of bolt pairs (4) which are arranged between the bottom plate (1) and the upper pressure plate (2) in a penetrating mode.

4. The auxiliary tool for battery test of claim 3, wherein:

the bottom of the bottom plate (1) is provided with an embedded groove (101) for embedding a bolt head (403) in the bolt pair (4);

the insert groove (101) is used for limiting the rotation of the bolt head (403) relative to the bottom plate (1).

5. The auxiliary tool for battery test of claim 3, wherein:

the lower pressing plate (3) is arranged on the plurality of bolt pairs (4) in a sliding mode.

6. The auxiliary tool for battery test of claim 1, wherein:

the elastic part (7) adopts a spring;

the bottom of the upper pressing plate (2) and the top of the lower pressing plate (3) are respectively provided with a convex part, and two ends of the spring are respectively sleeved and connected outside the corresponding convex parts.

7. The auxiliary tool for battery test of claim 6, wherein:

the springs comprise a first spring (701) arranged corresponding to the middle of the battery (5), and a plurality of second springs (702) arranged at intervals along the circumferential direction of the first spring (701);

the diameter of the first spring (701) is larger than the diameter of the second spring (702).

8. The auxiliary tool for battery test of claim 1, wherein:

corresponding to the two sides of the battery (5), the bottom of the lower pressing plate (3) and the top of the bottom plate (1) are both provided with buffer layers (6).

9. The auxiliary tool for battery test according to any one of claims 1 to 8, wherein:

the batteries (5) are stacked up and down;

a partition plate (8) is arranged between every two adjacent batteries (5), and the partition plate (8) slides on the bottom plate (1) in a guiding manner.

10. The auxiliary tool for battery test of claim 9, wherein:

the top and the bottom of the partition plate (8) are both provided with buffer layers (6).

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