Lithium boron alloy stability test device, manufacturing method and corresponding test method
阅读说明：本技术 一种锂硼合金稳定性试验装置、制作方法以及相应试验方法 (Lithium boron alloy stability test device, manufacturing method and corresponding test method ) 是由 任晨 孙现忠 刘岁鹏 赵胜楠 吴涛 郑珊 于 2020-12-16 设计创作，主要内容包括：本发明涉及锂硼合金稳定性试验装置、制作方法以及相应试验方法,装置包括：底座、下压板、连接柱、上压板、挡板和固定销；连接柱将底座和挡板一起用螺母固定连接；所述底座有一环形内槽,使用时用插入不锈钢管壳与外界进行隔离；下压板有环形支架,与底座部分接触；所述上压板有楔形孔,与固定销配合使用进行锁紧,工作时处于受压状态；所述挡板有中心孔,与下压板和上压板在同一垂直轴向,起固定和定位作用。本发明通过底座、下压板、连接柱、上压板、挡板、固定销组成该装置,该装置强度高,结构简易,体积小,使用方便,效率较高。(The invention relates to a lithium boron alloy stability test device, a manufacturing method and a corresponding test method, wherein the device comprises: the device comprises a base, a lower pressing plate, a connecting column, an upper pressing plate, a baffle and a fixing pin; the base and the baffle are fixedly connected together by the connecting column through nuts; the base is provided with an annular inner groove, and is isolated from the outside by inserting a stainless steel tube shell when in use; the lower press plate is provided with an annular bracket which is contacted with the base part; the upper pressure plate is provided with a wedge-shaped hole, is matched with the fixing pin for locking and is in a pressed state during working; the baffle is provided with a central hole, and the baffle, the lower pressing plate and the upper pressing plate are in the same vertical axial direction and play roles in fixing and positioning. The device is composed of the base, the lower pressing plate, the connecting column, the upper pressing plate, the baffle and the fixing pin, and is high in strength, simple in structure, small in size, convenient to use and high in efficiency.)
1. A lithium boron alloy stability test device is characterized by comprising:
the device comprises a base, a lower pressing plate, a connecting column, an upper pressing plate, a baffle and a fixing pin;
the base and the baffle are fixedly connected together by the connecting column through nuts; the base is provided with an annular inner groove, and is isolated from the outside by inserting a stainless steel tube shell when in use; the lower press plate is provided with an annular bracket which is contacted with the base part; the upper pressure plate is provided with a wedge-shaped hole, is matched with the fixing pin for locking and is in a pressed state during working; the baffle is provided with a central hole, and the baffle, the lower pressing plate and the upper pressing plate are in the same vertical axial direction and play roles in fixing and positioning.
2. The lithium boron alloy stability test device of claim 1, wherein the base has uniformly distributed threaded holes, and the baffles have uniformly distributed through holes, and are connected through the connecting columns.
3. The lithium boron alloy stability testing device of claim 1, wherein the base, the lower pressing plate, the connecting column, the upper pressing plate, the baffle plate and the fixing pin are made of aluminum alloy.
4. A manufacturing method of a lithium boron alloy stability test device is characterized by comprising the following steps: respectively manufacturing a base, a lower pressing plate, a connecting column, an upper pressing plate, a baffle and a fixing pin;
one ends of the three connecting columns are respectively fastened in screw holes in the base, the three studs are located on the same vertical surface of the base, the three through holes of the baffle are aligned to the three studs, the upper portion of the baffle is fastened by using standard nuts, the lower pressing plate is aligned to a central hole of the base and then is in butt joint, the upper pressing plate is aligned to the central hole of the baffle to be installed, and the fixing pins are installed in the upper pressing plate.
5. The method of manufacturing of claim 4, wherein the manufacturing of the base includes: according to general thermal battery diameter, choose for use aluminum alloy plate to process, process three equipartition screw at the base. And (4) processing an inner groove with the width of about 2mm and the depth of about 5mm at a position 2mm away from the outer diameter of the base outside the screw hole distribution circle.
6. The method of claim 4, wherein the forming of the lower platen comprises: and (4) according to the diameter of the single battery, processing a lower pressing plate by using an aluminum alloy rod, and processing the annular support by using the lower pressing plate.
7. The method of claim 4, wherein the forming of the connecting stud comprises: according to the diameter of the screw hole of the base, 3 connecting columns are processed by aluminum alloy pipe rods, the two ends of each connecting column are provided with external threads, one end of each connecting column is provided with a small thread, and the other end of each connecting column is provided with a large thread.
8. The method of manufacturing of claim 4, wherein the manufacturing of the upper platen includes: and (3) processing an upper pressure plate by using an aluminum alloy rod according to the diameter of the single battery, and processing a parallelogram inner hole in a cylinder at the end part of the upper pressure plate.
9. The method of claim 4, wherein the forming of the baffle plate comprises: according to the diameter of the thermal battery, an aluminum alloy plate is selected for processing, and three uniformly distributed through holes are processed on the surface of the baffle plate.
10. A lithium boron alloy stability test method, characterized in that the lithium boron alloy stability test device of any one of claims 1 to 3 is used, and the test method comprises the following steps:
the lithium boron alloy is trimmed to have the same diameter as the lower pressing plate, lithium boron sheets are isolated by an insulating asbestos pad and sequentially placed between the lower pressing plate and the upper pressing plate, prepressing is carried out by 2 MPa-5 Mpa, locking is carried out by a fixing pin, a proper stainless steel tube shell is placed behind the left side of the lithium boron sheet, the lithium boron sheet is placed into a 400-600 ℃ box-type resistance furnace to be burnt for 10-30 min, the box-type resistance furnace is cooled by self-heating after burning, the stability of the lithium boron alloy material is observed, and if a large amount of white substances are exuded, the poor stability of the lithium boron alloy material can be judged.
Technical Field
The invention relates to the technical field of application of lithium boron materials for thermal batteries, in particular to a lithium boron alloy stability test device, a manufacturing method and a corresponding test method.
Background
The lithium-boron alloy material is one of important negative electrode materials of a thermal battery, is a composite material, and has the characteristics of high lithium content, high mass specific energy, easiness in processing and forming, wide application and the like. The lithium boron alloy is mainly composed of metallic Li and Li7B6The framework comprises 55-70% of lithium, and metal Li and Li in the material when discharge occurs7B6The metallic Li in the framework participates in the oxidation-reduction reaction. The stability of the lithium boron material is crucial to the safety of the thermal battery, such as poor stability of the lithium boron material, Li7B6Free metal Li in the framework is firstly dissociated and seeps out of the galvanic pile under the condition of high temperature, so that the electrical property abnormality and the safety problem of the thermal battery are caused.
At present, the stability of lithium boron is not identified and verified by an effective and uniform method, and the state can be determined only by trial sale of a large number of products after the production of the materials is finished, so that the cost of the materials is increased, and the material consumption is huge. Therefore, it is necessary to solve the problem of the stability test apparatus and method for lithium boron materials.
Disclosure of Invention
The invention aims to provide a lithium boron alloy stability test device which is used for solving the technical problems in the prior art.
The invention relates to a lithium boron alloy stability test device, which comprises: the device comprises a base, a lower pressing plate, a connecting column, an upper pressing plate, a baffle and a fixing pin; the base and the baffle are fixedly connected together by the connecting column through nuts; the base is provided with an annular inner groove, and is isolated from the outside by inserting a stainless steel tube shell when in use; the lower press plate is provided with an annular bracket which is contacted with the base part; the upper pressure plate is provided with a wedge-shaped hole, is matched with the fixing pin for locking and is in a pressed state during working; the baffle is provided with a central hole, and the baffle, the lower pressing plate and the upper pressing plate are in the same vertical axial direction and play roles in fixing and positioning.
According to an embodiment of the lithium boron alloy stability test device, the base is provided with threaded holes which are uniformly distributed, the baffle is provided with through holes which are uniformly distributed, and the baffle is connected with the baffle through the connecting column
According to an embodiment of the lithium boron alloy stability testing device, the base, the lower pressing plate, the connecting column, the upper pressing plate, the baffle and the fixing pin are made of aluminum alloy.
A manufacturing method of a lithium boron alloy stability test device comprises the following steps: respectively manufacturing a base, a lower pressing plate, a connecting column, an upper pressing plate, a baffle and a fixing pin; one ends of the three connecting columns are respectively fastened in screw holes in the base, the three studs are located on the same vertical surface of the base, the three through holes of the baffle are aligned to the three studs, the upper portion of the baffle is fastened by using standard nuts, the lower pressing plate is aligned to a central hole of the base and then is in butt joint, the upper pressing plate is aligned to the central hole of the baffle to be installed, and the fixing pins are installed in the upper pressing plate.
According to an embodiment of the manufacturing method of the present invention, the manufacturing of the base includes: according to general thermal battery diameter, choose for use aluminum alloy plate to process, process three equipartition screw at the base. And (4) processing an inner groove with the width of about 2mm and the depth of about 5mm at a position 2mm away from the outer diameter of the base outside the screw hole distribution circle.
According to an embodiment of the manufacturing method of the present invention, the manufacturing of the lower pressing plate includes: and (4) according to the diameter of the single battery, processing a lower pressing plate by using an aluminum alloy rod, and processing the annular support by using the lower pressing plate.
According to an embodiment of the manufacturing method of the present invention, the manufacturing of the connecting stud includes: according to the diameter of the screw hole of the base, 3 connecting columns are processed by aluminum alloy pipe rods, the two ends of each connecting column are provided with external threads, one end of each connecting column is provided with a small thread, and the other end of each connecting column is provided with a large thread.
According to an embodiment of the manufacturing method of the present invention, the manufacturing of the upper platen includes: and (3) processing an upper pressure plate by using an aluminum alloy rod according to the diameter of the single battery, and processing a parallelogram inner hole in a cylinder at the end part of the upper pressure plate.
According to an embodiment of the manufacturing method of the present invention, the manufacturing of the baffle plate includes: according to the diameter of the thermal battery, an aluminum alloy plate is selected for processing, and three uniformly distributed through holes are processed on the surface of the baffle plate.
A lithium boron alloy stability test method, wherein the lithium boron alloy stability test method is realized by using the lithium boron alloy stability test device, and comprises the following steps: the lithium boron alloy is trimmed to have the same diameter as the lower pressing plate, lithium boron sheets are isolated by an insulating asbestos pad and sequentially placed between the lower pressing plate and the upper pressing plate, prepressing is carried out by 2 MPa-5 Mpa, locking is carried out by a fixing pin, a proper stainless steel tube shell is placed behind the left side of the lithium boron sheet, the lithium boron sheet is placed into a 400-600 ℃ box-type resistance furnace to be burnt for 10-30 min, the box-type resistance furnace is cooled by self-heating after burning, the stability of the lithium boron alloy material is observed, and if a large amount of white substances are exuded, the poor stability of the lithium boron alloy material can be judged.
The invention has the advantages and positive effects that:
1. the device is composed of the base, the lower pressing plate, the connecting column, the upper pressing plate, the baffle and the fixing pin, and is high in strength, simple in structure, small in size, convenient to use and high in efficiency.
2. According to the invention, the annular support is arranged on the lower pressing plate, so that the heat transfer between the lower pressing plate and the base can be reduced, and the temperature is more uniform.
3. The upper pressure plate is matched with the fixing pin for locking, so that a stable pressure state can be borne.
4. According to the invention, the stainless steel shell is inserted into the annular inner groove of the base, so that the base can be effectively isolated from the air atmosphere, sufficient environmental conditions are provided for firing the lithium boron material, and the base is convenient and quick.
Drawings
FIG. 1 is a schematic diagram of the apparatus;
FIG. 2 is a schematic top view of the base of FIG. 1;
FIG. 3 is a schematic front view of the lower platen of FIG. 1;
FIG. 4 is a schematic front view of the connecting column of FIG. 1;
FIG. 5 is a schematic front view of the upper platen of FIG. 1;
FIG. 6 is a schematic top view of the baffle of FIG. 1;
FIG. 7 is a front view of the retaining pin of FIG. 1;
reference numerals:
a base 1; a lower press plate 2; a connecting column 3; an upper platen 4; a baffle 5; the pin 6 is fixed.
Detailed Description
In order to make the objects, contents, and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
Referring to figures 1-7: the utility model provides a lithium boron alloy stability rapid test device, includes base 1 and baffle 5, is equipped with spliced pole 3 between base 1 and the baffle 5.
The base 1 is provided with uniformly distributed threaded holes, the baffle 5 is provided with uniformly distributed through holes and is connected through the connecting column 3, and the baffle 5 is fixed through nuts; the base 1 is provided with an annular inner groove; the lower pressing plate 2 is provided with an annular bracket; the upper pressing plate 4 is provided with a wedge-shaped hole and is matched with the fixing pin 6 for use to be pressed and locked; the base 1, the lower pressing plate 2, the connecting column 3, the upper pressing plate 4, the baffle 5 and the fixing pin 6 are all made of aluminum alloy.
The manufacturing process of the invention comprises:
as shown in fig. 2 to 7, the bases 1 are respectively manufactured; a lower press plate 2; 3, connecting a column 3; an upper platen 4; a baffle 5; the pin 6 is fixed.
Manufacturing a base:
according to general thermal battery diameter, choose for use aluminum alloy plate to process, process three equipartition screw at the base. And (4) processing an inner groove with the width of about 2mm and the depth of about 5mm at a position 2mm away from the outer diameter of the base outside the screw hole distribution circle.
Manufacturing a lower pressing plate:
and (4) according to the diameter of the single battery, processing a lower pressing plate by using an aluminum alloy rod, and processing the annular support by using the lower pressing plate.
Manufacturing a connecting column:
according to the diameter of the screw hole of the base, 3 connecting columns are processed by aluminum alloy pipe rods, the two ends of each connecting column are provided with external threads, and the thread of one end of each connecting column is small.
Manufacturing an upper pressing plate:
and (3) processing an upper pressure plate by using an aluminum alloy rod according to the diameter of the single battery, and processing a parallelogram inner hole in a cylinder at the end part of the upper pressure plate.
Manufacturing a baffle:
according to the diameter of the thermal battery, an aluminum alloy plate is selected for processing, and three uniformly distributed through holes are processed on the surface of the baffle plate.
Manufacturing a fixing pin:
and selecting an aluminum alloy plate to process the fixing pin according to the figure.
Manufacturing a test device:
one ends of the three connecting columns are respectively fastened in screw holes in the base, the three studs are located on the same vertical surface of the base, the three through holes of the baffle are aligned to the three studs, the upper portion of the baffle is fastened by using standard nuts, the lower pressing plate is aligned to a central hole of the base and then is in butt joint, the upper pressing plate is aligned to the central hole of the baffle to be installed, and in addition, fixing pins are installed in the upper pressing plate to complete the assembly of the device shown in the figure 1.
By adopting the device, the lithium boron alloy is sheared into the diameter the same as that of the lower pressing plate, the lithium boron sheets are isolated by insulating asbestos (mica) pads and are sequentially placed between the lower pressing plate and the upper pressing plate, the prepressing is carried out by the pressure of 2 MPa-5 Mpa, the fixing pins are used for locking, and the proper stainless steel pipe shell is placed in the left rear part. And (3) putting the lithium boron alloy material into a box type resistance furnace at 400-600 ℃ for burning for 10-30 min, and cooling the material in the box type resistance furnace by self-heating after burning, so that the stability of the lithium boron alloy material can be observed, and if a large amount of white substances are exuded, the poor stability of the lithium boron alloy material can be judged.
The technical scheme adopted for solving the technical problems in the prior art is as follows:
a universal lithium boron alloy stability test device mainly comprises a base, a lower pressing plate, a connecting column, an upper pressing plate, a baffle and a fixing pin. The device fixedly connects the base and the baffle together by the nut through the connecting column, and is characterized by simple structure, small volume and convenient use; the base is provided with an annular inner groove, and the stainless steel pipe shell is inserted into the annular inner groove to be isolated from the outside during use. The lower pressing plate is provided with an annular support which is not in complete contact with the base, so that heat transfer is reduced, and the temperature is more uniform. The upper press plate is provided with a wedge-shaped hole, and the wedge-shaped hole is matched with a fixing pin for locking, so that a certain pressed state is guaranteed. The baffle is provided with a central hole, and the baffle, the lower pressing plate and the upper pressing plate are in the same vertical axial direction and play roles in fixing and positioning.
The invention has the advantages and positive effects that:
1. the device is composed of the base, the lower pressing plate, the connecting column, the upper pressing plate, the baffle and the fixing pin, and is high in strength, simple in structure, small in size, convenient to use and high in efficiency.
2. According to the invention, the annular support is arranged on the lower pressing plate, so that the heat transfer between the lower pressing plate and the base can be reduced, and the temperature is more uniform.
3. The upper pressure plate is matched with the fixing pin for locking, so that a stable pressure state can be borne.
4. According to the invention, the stainless steel shell is inserted into the annular inner groove of the base, so that the base can be effectively isolated from the air atmosphere, sufficient environmental conditions are provided for firing the lithium boron material, and the base is convenient and quick.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.