CN214793563U - Soft-packaged electrical core bulging force testing tool - Google Patents
Soft-packaged electrical core bulging force testing tool Download PDFInfo
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- CN214793563U CN214793563U CN202023283161.6U CN202023283161U CN214793563U CN 214793563 U CN214793563 U CN 214793563U CN 202023283161 U CN202023283161 U CN 202023283161U CN 214793563 U CN214793563 U CN 214793563U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model relates to a soft-packaged electrical core bulging force test fixture, it includes electric core loading board, goes up roof and clamp plate. The battery cell bearing plate is used for bearing a battery cell to be tested, and a cooling part capable of cooling the battery cell is arranged on the battery cell bearing plate. The upper top plate is arranged above the battery cell bearing plate and is arranged opposite to the battery cell bearing plate, an adjustable connecting assembly is arranged between the upper top plate and the battery cell bearing plate, and the distance between the upper top plate and the battery cell bearing plate can be limited by the adjustable connecting assembly due to adjustment. The pressing plate is positioned between the battery cell bearing plate and the upper top plate and is arranged corresponding to the battery cell to be borne, and a pressure measuring part is arranged between the pressing plate and the upper top plate. Soft-packaged electrical core expansibility test fixture, through setting up the cooling portion, can improve the radiating effect to electric core to can prevent effectively that electric core heat dissipation is bad, and then can make this test fixture when being used for the detection of soft-packaged electrical core expansibility, can have higher detection accuracy.
Description
Technical Field
The utility model relates to a lithium cell technical field, in particular to soft-packaged electrical core bulging force test fixture.
Background
At present, in batteries on the market, lithium ion batteries have the best performance, lithium ore resources in China are rich, and the lithium ion batteries have the potential of recycling, so more and more automobile manufacturers at home and abroad select the lithium ion batteries as power batteries of electric automobiles.
The lithium ion battery mainly comprises a square form, a cylindrical form and a soft package form, wherein the soft package lithium battery is favored by electric automobile manufacturers due to high energy density, good safety performance, light weight and good cycle performance. However, many problems are gradually exposed to the use of the pouch battery in large quantities. The soft package battery core can cause the change of battery thickness and the production of bulging force at the charge-discharge in-process, and the change of thickness and bulging force not only can cause adverse effect to the life-span and the reliability of battery, also can restrict the battery simultaneously and design in groups. Therefore, the expansion force test of the soft package battery cell is very important, and due to the unreasonable structural design, the expansion force of the soft package battery cell cannot be accurately measured by the conventional expansion force clamp through the pressure sensor.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a soft-packaged electrical core expansibility test fixture, it can improve the accuracy to soft-packaged electrical core expansibility test.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
the utility model provides a soft-packaged electrical core bulging force test fixture, includes:
the battery cell loading plate is used for loading a battery cell to be tested, and a cooling part capable of cooling the battery cell is arranged on the battery cell loading plate;
the upper top plate is positioned above the battery cell loading plate and is arranged opposite to the battery cell loading plate, an adjustable connecting assembly is arranged between the upper top plate and the battery cell loading plate, and the distance between the upper top plate and the battery cell loading plate can be limited due to the adjustment of the connecting assembly;
and the pressing plate is positioned between the battery cell bearing plate and the upper top plate, is arranged corresponding to the battery cell to be borne, and is provided with a pressure measuring part between the pressing plate and the upper top plate.
Further, a guide portion is disposed between the pressing plate and the upper top plate, and the guide portion is configured to restrict the pressing plate from moving relative to the upper top plate along the detection direction of the pressure measurement portion.
Furthermore, the guide part comprises a plurality of guide rods, the bottom ends of the guide rods are fixedly connected with the pressing plate, the top ends of the guide rods are slidably arranged through the upper top plate, and blocking pieces capable of being blocked at the top of the upper top plate are arranged at the top ends of the guide rods.
Further, the pressure measuring part is fixed at the bottom of the upper top plate.
Furthermore, coupling assembling is including wearing to establish the electricity core loading board with the multiunit bolt pair that the roof set up.
Furthermore, a limiting part for limiting the minimum distance between the battery cell bearing plate and the upper top plate is arranged between the battery cell bearing plate and the upper top plate.
Further, the cooling portion is a groove formed in the battery cell loading plate, two ends of the groove penetrate through the battery cell loading plate, a base plate covering the groove is arranged on the battery cell loading plate, and the battery cell is located on the base plate.
Further, electric core length direction's one end or both ends are equipped with utmost point ear, the recess is for following electric core length direction interval arrangement's multichannel, and be close to utmost point ear position the groove width of recess is greater than other positions the groove width of recess.
Further, each is adjacent form between the recess in order to support the boss of backing plate, and follow the length direction of electricity core, the boss has close to in the tip boss that electricity core both ends were arranged, is located the central boss at middle part, and is located the tip boss with middle part boss between the central boss, just the width of tip boss is greater than central boss, the width of central boss is greater than the middle part boss.
Furthermore, the battery cell loading plate is provided with accommodating grooves arranged along the length direction of the battery cell, the grooves are intersected and communicated with the accommodating grooves, and the backing plate is located in the accommodating grooves.
Compared with the prior art, the utility model discloses following advantage has:
(1) soft-packaged electrical core expansibility test fixture, through set up the cooling portion in order to cool off electric core on electric core loading board, can improve the radiating effect to electric core to can prevent effectively that electric core from influencing the accuracy that expansibility detected because of the heat dissipation is bad, and then can make this test fixture when being used for the detection of soft-packaged electrical core expansibility, can improve the accuracy of testing result.
(2) Through setting up the guide part to the restraint clamp plate removes for last roof along the detection direction of surveying the splenium, can effectively guarantee that the bulging force that soft-packaged electrical core produced is whole to act on surveying the splenium, thereby is favorable to guaranteeing the accuracy of test result.
(3) The guide part adopts a plurality of guide rods, so that the structure is simple, and the design and implementation are convenient.
(4) Through setting up with the locating part of injecing minimum distance between electric core loading board and the last roof, can prevent to cause the extrusion to soft-packaged electric core.
(5) The cooling part adopts the recess, simple structure, and the design of being convenient for is implemented, and sets up the backing plate and can prevent that soft-packaged electrical core from expanding to the recess in, is favorable to improving the accuracy of bulging force testing result.
(6) The groove width of the groove close to the position of the tab is larger than the groove width of the grooves at other positions, so that the heat dissipation effect of the tab is improved.
(7) Through establishing the width that is located central boss to be greater than the width of middle part boss, can prevent electric core extrusion deformation.
(8) Set up the holding tank on electric core loading board to locate the holding tank with the backing plate in, can improve the stability that sets up of backing plate.
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 view of a soft-package battery cell expansion force testing tool according to an embodiment of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a front view of FIG. 1;
FIG. 4 is an enlarged view of portion A of FIG. 1;
fig. 5 is a schematic structural diagram of a battery cell loading plate according to an embodiment of the present invention;
description of reference numerals:
1. a battery cell loading plate; 101. a groove; 102. a boss; 1021. an end boss; 1022. a central boss; 1023. a middle boss;
2. pressing a plate; 3. a tubular member; 4. an upper top plate; 5. a bolt; 6. a guide bar; 7. a pressure sensor; 8. an electric core; 9. a backing plate.
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", "outer", 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 to be construed as indicating or implying any particular importance.
In addition, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless otherwise specifically limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in combination with the specific situation.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
This embodiment relates to a soft-packaged electrical core bulging force test fixture, and on overall structure, it mainly includes electric core loading board, goes up roof and clamp plate. The battery cell loading plate is used for loading a battery cell to be tested, and a cooling part capable of cooling the battery cell is arranged on the battery cell loading plate. The upper top plate is arranged above the battery cell bearing plate and is arranged opposite to the battery cell bearing plate, an adjustable connecting assembly is arranged between the upper top plate and the battery cell bearing plate, and the distance between the upper top plate and the battery cell bearing plate can be limited by the adjustable connecting assembly due to adjustment. The pressing plate is positioned between the battery cell bearing plate and the upper top plate and is arranged corresponding to the battery cell to be borne, and a pressure measuring part is arranged between the pressing plate and the upper top plate.
The soft-packaged electrical core expansibility test fixture of this embodiment can improve the radiating effect to electric core through the cooling portion that sets up in order to cool off electric core on electric core loading board to can prevent effectively that electric core from influencing the accuracy that expansibility detected because of the heat dissipation is bad, and then can make this test fixture when being used for the detection of soft-packaged electrical core expansibility, can improve the accuracy of testing result.
Based on the above overall structure, an exemplary structure of the soft-package battery cell expansion force test tool of the present embodiment is as shown in fig. 1 to fig. 4, and the test tool of the present embodiment is preferably made of an aluminum alloy 6061, so as to improve the service life thereof and meet the requirement of long-time cycle test of the battery cell 8.
As a possible implementation manner, the structure of the battery cell loading plate 1 shown in fig. 5 in combination with fig. 1 is that the battery cell loading plate 1 of the embodiment is rectangular, so as to facilitate processing and manufacturing. The length of the battery cell loading plate 1 should be smaller than the length of the battery cell 8, so that the tab of the battery cell 8 extends out of one side of the battery cell loading plate 1, and the width of the battery cell loading plate 1 should be greater than the width of the battery cell 8.
The aforementioned cooling portion is specifically a groove 101 configured on the battery cell loading plate 1, and both ends of the groove 101 run through the battery cell loading plate 1, and are six arranged at intervals along the length direction of the battery cell loading plate 1. Of course, it should be noted that the specific number of the grooves 101 can be adjusted according to specific situations. As shown in fig. 4, in order to prevent the battery cell 8 from expanding into the groove 101 and deforming, a backing plate 9 covering the groove 101 is disposed on the battery cell loading plate 1, and the battery cell 8 to be tested is located on the backing plate 9.
In addition, in order to improve the stability of the setting of the backing plate 9, still refer to fig. 4, a holding groove arranged along the length direction of the battery cell 8 (i.e. the arrangement direction of the grooves 101) is arranged on the battery cell loading plate 1, and the holding groove runs through the setting of the battery cell loading plate 1 and intersects with the grooves 101, so that the backing plate 9 is located in the holding groove. To further improve the stability of the arrangement of the support plate 9, it is provided, as shown in fig. 4, that the support plate 9 has lugs which project outwards and can be inserted into at least one of the recesses 101.
When the concrete design is implemented, in order to effectively ensure the stability of the setting of the backing plate 9, the two sides of the backing plate 9 can be limited to be respectively abutted against the two side walls of the accommodating groove, so that the movement of the backing plate 9 in the width direction of the battery cell loading plate 1 is limited. Meanwhile, the two sides of the limiting lug are respectively abutted against the two side walls of the groove 101 to limit the movement of the backing plate 9 along the length direction of the cell loading plate 1.
In the present embodiment, referring to fig. 5, a boss 102 for supporting a gasket is formed between each adjacent grooves 101, and along the length direction of the battery cell 8 (i.e., the left-right direction shown in fig. 5), the boss 102 has end bosses 1021 arranged near both ends of the battery cell 8, a central boss 1022 located in the middle, and a middle boss 1023 located between the end bosses 1021 and the central boss 1022. And the width L1 of the end boss 1021 is greater than the width L2 of the center boss 1022, and the width L2 of the center boss 1022 is greater than the width L3 of the middle boss 1023. So set up, under the certain prerequisite of length of electric core loading board 1, both can prevent that electric core 8 from being extruded and warp, also can guarantee the width of recess 101 simultaneously to can guarantee the cooling effect to electric core 8.
Usually, tabs are disposed at one end or two ends of the battery cell 8 in the length direction, and because the tabs generate more heat, in order to prevent the accuracy of the test result from being affected by poor heat dissipation, the width of the groove 101 close to the position of the tab is greater than the width of the grooves 101 at other positions. In the embodiment, as shown in fig. 5, based on the structure of the conventional battery cell 8, the grooves 101 at the two ends of the battery cell loading plate 1 in the length direction correspond to the positions of the tabs, and for this reason, the widths K of the grooves 101 at the two ends correspond to the widths K of the tabs1Width K of groove 101 greater than the middle2。
Here, the widths of the central grooves 101 may be the same or different, and for convenience of manufacturing, the widths of the central grooves 101 are preferably the same. In addition, it is understood that, in addition to the above arrangement, the arrangement and the number of the grooves 101 on the cell carrier plate 1 may be changed according to specific situations.
Referring to fig. 1 to 3, the upper top plate 4 of the present embodiment is rectangular and is configured to follow the shape of the cell loading plate 1, and based on the structure of the conventional cell 8, the pressing plate 2 is configured to be rectangular to press the cell 8. The pressure measuring unit may be any component capable of detecting the expansion force of the battery cell 8 during the charging and discharging processes, wherein as a possible implementation manner, the pressure measuring unit of the present embodiment is specifically the pressure sensor 7 fixed at the bottom of the upper top plate 4, and the installation structure thereof may refer to the prior art.
In addition, to improve the test accuracy, as shown in fig. 1, a guide portion is provided between the pressure plate 2 and the upper top plate 4, and the guide portion is configured to restrain the pressure plate 2 from moving relative to the upper top plate 4 in the detection direction of the pressure sensor 7 (i.e., the vertical direction of the test tool). So design, can effectively guarantee that the bulging force that soft-packaged electrical core 8 produced all acts on pressure sensor 7, can avoid the bulging force in horizontal ascending loss to be favorable to guaranteeing the accuracy of test result.
Wherein, the guide part can adopt the guide structure that can realize moving along the vertical direction of test fixture to clamp plate 2 wantonly, and for manufacturing, the guide part of this embodiment specifically includes many guide arms 6 that bottom and clamp plate 2 linked firmly, and the top of each guide arm 6 slides and wears to establish roof 4 setting to be equipped with on the top of each guide arm 6 and keep off the piece of putting at roof 4 top. The blocking member of this embodiment specifically adopts the jump ring that blocks on the guide arm 6, and certainly except adopting the jump ring, other structures can also be adopted.
Based on the specific structure of the existing pole piece, as a preferred embodiment, the guide rods 6 of the embodiment are four in rectangular arrangement, so that the expansion force generated by the battery cell 8 can be completely and accurately acted on the pressure sensor 7, thereby effectively avoiding the expansion force loss caused by the deviation of the pressing plate 2 and ensuring the accuracy of the test result. Of course, the guide rods 6 of the present embodiment may be provided in other numbers than four, and may be uniformly distributed along the edge of the platen 2.
As shown in fig. 1 to 3, the connection assembly includes a plurality of bolt pairs penetrating through the battery cell loading plate 1 and the upper top plate 4, and the number of the bolt pairs in this embodiment is four based on the structure of the battery cell loading plate 1 and the structure of the upper top plate 4, and the bolt pairs are respectively disposed at each corner of the battery cell loading plate 1. And the end of the bolt 5 of each bolt pair is abutted against the battery cell loading plate 1, and the two nuts are adjacently arranged so as to prevent the nuts from being loosened reversely due to the fact that the upper top plate 4 bears the expansive force of the battery cell 8.
In addition, as shown in fig. 2 and fig. 3, in order to prevent the cell 8 from being squeezed, a limiting member is disposed between the cell carrier plate 1 and the upper top plate 4 to limit the minimum distance therebetween. The first limiting member of this embodiment is specifically a cylindrical member 3 located between the battery cell loading plate 1 and the upper top plate 4 and sleeved on the bolt 5. It is understood that, in order to improve the use effect, the number of the barrel 3 is the same as the number of the bolts 5, and therefore, the barrel 3 of the present embodiment is specifically four. The cylindrical member 3 may be cylindrical instead of the prismatic shape shown in fig. 1, and the material of the cylindrical member 3 should ensure the compressive strength.
When the soft-package battery cell expansibility testing tool is used, firstly, the nut is disassembled to disassemble the upper top plate 4 and the pressing plate 2, then, the battery cell 8 to be tested is placed on the backing plate 9, the tab of the battery cell 8 extends out of the battery cell bearing plate 1, then, the upper top plate 4 is sleeved on each bolt 5, and the pressing plate 2 is pressed against the battery cell 8; and finally, the charging and discharging element in the prior art is connected with the lug of the battery cell 8 to test by installing and screwing the nut to adjust the pressure sensor 7 to a set value. In addition, this test fixture still can link to each other with current supervisory equipment to the change of real time monitoring electricity core 8 bulging force.
Through the soft-packaged electrical core bulging force test fixture who adopts this embodiment, can improve the accuracy that detects 8 bulging forces of electric core, can make this test fixture have better practicality.
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 a soft-packaged electrical core bulging force test fixture which characterized in that: the method comprises the following steps:
the battery cell loading plate (1) is used for loading a battery cell (8) to be tested, and a cooling part capable of cooling the battery cell (8) is arranged on the battery cell loading plate (1);
the upper top plate (4) is positioned above the battery cell loading plate (1), is arranged opposite to the battery cell loading plate (1), and is provided with an adjustable connecting assembly between the upper top plate (4) and the battery cell loading plate (1), and the connecting assembly can limit the distance between the upper top plate (4) and the battery cell loading plate (1) due to adjustment;
and the pressing plate (2) is positioned between the battery cell bearing plate (1) and the upper top plate (4), is arranged corresponding to the battery cell (8) to be borne, and is provided with a pressure measuring part between the pressing plate (2) and the upper top plate (4).
2. The soft-package battery core expansion force testing tool of claim 1, characterized in that: a guide part is arranged between the pressing plate (2) and the upper top plate (4), and the guide part is configured to restrict the pressing plate (2) to move relative to the upper top plate (4) along the detection direction of the pressure measuring part.
3. The soft-package battery core expansive force testing tool of claim 2, characterized in that: the guide part comprises a plurality of guide rods (6) the bottom ends of which are fixedly connected with the pressing plate (2), the top end of each guide rod (6) penetrates through the upper top plate (4) in a sliding mode, and a blocking part capable of being blocked at the top of the upper top plate (4) is arranged at the top end of each guide rod (6).
4. The soft-package battery core expansion force testing tool of claim 1, characterized in that: the pressure measuring and pressing part is a pressure sensor (7) fixed at the bottom of the upper top plate (4).
5. The soft-package battery core expansion force testing tool of claim 1, characterized in that: the connecting assembly comprises a plurality of groups of bolt pairs which are arranged on the battery cell bearing plate (1) and the upper top plate (4) in a penetrating mode.
6. The soft-package battery core expansion force testing tool of claim 1, characterized in that: and a limiting part for limiting the minimum distance between the battery cell bearing plate (1) and the upper top plate (4) is arranged between the battery cell bearing plate and the upper top plate.
7. The soft-package battery cell expansion force testing tool according to any one of claims 1 to 6, characterized in that: the cooling part is constructed in a groove (101) formed in the battery cell bearing plate (1), two ends of the groove (101) are arranged in the battery cell bearing plate (1) in a penetrating mode, a base plate (9) covered in the groove (101) is arranged on the battery cell bearing plate (1), and the battery cell (8) is located on the base plate (9).
8. The soft-package battery core expansion force testing tool of claim 7, characterized in that: electric core (8) length direction's one end or both ends are equipped with utmost point ear, recess (101) are for following electric core (8) length direction interval arrangement's multichannel, and be close to in utmost point ear position the groove width of recess (101) is greater than other positions the groove width of recess (101).
9. The soft-package battery core expansion force testing tool of claim 8, characterized in that: each is adjacent form between the recess (101) in order to support boss (102) of backing plate (9), and along the length direction of electricity core (8), boss (102) have be close to end boss (1021) that electricity core (8) both ends were arranged, be located central boss (1022) at the middle part, and be located end boss (1021) with middle part boss (1023) between central boss (1022), just the width of end boss (1021) is greater than central boss (1022), the width of central boss (1022) is greater than middle part boss (1023).
10. The soft-package battery core expansion force testing tool of claim 8, characterized in that: the battery cell loading plate is characterized in that containing grooves which are arranged along the length direction of the battery cell (8) are formed in the battery cell loading plate (1), the grooves (101) are intersected and communicated with the containing grooves, and the backing plate (9) is located in the containing grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023283161.6U CN214793563U (en) | 2020-12-30 | 2020-12-30 | Soft-packaged electrical core bulging force testing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023283161.6U CN214793563U (en) | 2020-12-30 | 2020-12-30 | Soft-packaged electrical core bulging force testing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214793563U true CN214793563U (en) | 2021-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023283161.6U Active CN214793563U (en) | 2020-12-30 | 2020-12-30 | Soft-packaged electrical core bulging force testing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214793563U (en) |
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2020
- 2020-12-30 CN CN202023283161.6U patent/CN214793563U/en active Active
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