CN216217673U - Anti-static structure for thermal battery - Google Patents
Anti-static structure for thermal battery Download PDFInfo
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- CN216217673U CN216217673U CN202122556893.6U CN202122556893U CN216217673U CN 216217673 U CN216217673 U CN 216217673U CN 202122556893 U CN202122556893 U CN 202122556893U CN 216217673 U CN216217673 U CN 216217673U
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Abstract
The utility model relates to an anti-static structure for a thermal battery, which realizes effective static discharge by adopting an insulating material and a fixed initiating explosive device type current-limiting resistor to ensure that the distance between a static discharge channel and a cover body is shortest. The anti-static structure is simple and convenient to operate, and is a universal insulating material and a process operation method in the field of thermal batteries; the anti-static structure effectively isolates the static discharge between the bridge wire of the electric ignition head of the activation loop and the cover body through the protection and physical interval design of the insulating material. Through design resistance and lid static discharge channel, guarantee the uniqueness of 25kV static discharge point, and this static discharge point visual inspection has improved the thermal battery security through static discharge.
Description
Technical Field
The utility model belongs to the field of thermal battery safety design, and particularly relates to an anti-static structure for a thermal battery.
Background
Thermal batteries are currently widely used in modern weapon equipment systems, which have no energy output in the storage state, and only start to operate and output electric energy after the weapon system inputs a specified activation signal. The thermal battery often needs to satisfy the requirement of static sensitivity 25kV, in order to guarantee the security in thermal battery transportation, the assembly process, stops to lead to the potential safety hazard of false activation because of static, need prevent static security design usually in the thermal battery design process.
Firstly, a high-insulation material is adopted in the product to improve the insulation between the medicament and the outer shell so as to ensure that the thermal battery cannot be punctured, namely, a 'blocking' mode under the electrostatic discharge voltage required by indexes; secondly, a material with low insulativity is adopted or an electrostatic discharge channel is arranged between the pin line of the input end of the product and the shell, so that the product is preferentially discharged from the input end under the high-voltage condition during electrostatic discharge, namely, a discharge mode is adopted.
The two design methods seem to meet the design requirement of static electricity prevention, but the defect of static electricity prevention only by adopting one method exists, the using amount of insulating materials can be increased only by adopting a 'blocking' mode, static electricity is not eliminated, only the discharge position of the static electricity is transferred to a weak static electricity gathering point, and hidden danger still exists; only by adopting the leakage mode, if the leakage channel is not smooth or the insulating protective layer is damaged, the position of electrostatic leakage is not a preset leakage point. Therefore, the innovative design adopts a combined scheme of 'blocking' and 'discharging' to discharge static electricity at a preset position and meet the requirement of static electricity sensitivity.
Disclosure of Invention
The technical problem solved by the utility model is as follows: in order to solve the problem that current battery is because of static discharge mistake activation thermal battery under static sensitivity or strong electromagnetic environment, this novel antistatic structure for thermal battery that provides.
The technical scheme of the utility model is as follows: an anti-static structure for a thermal battery comprises a cover body, an insulating layer, an initiating explosive device type current-limiting resistor, sealing rubber and a glass fiber sleeve;
the cover body is provided with a plurality of mounting holes for placing binding posts and fixing holes for fixing the initiating explosive device type current-limiting resistor;
the insulating material is used for insulation between the cover body and an electric ignition head of the battery;
the glass fiber sleeves are respectively positioned on the fixing holes and each mounting hole; the welding position of the cable and the binding post is encapsulated by sealing rubber in the glass fiber sleeve;
the initiating explosive device type current-limiting resistor is used as an electrostatic gathering carrier and is positioned between two binding posts on the cover body, and the distance between the initiating explosive device type current-limiting resistor and the cover body is compared with the distance between other components and the cover body, so that the shortest distance is ensured, and the initiating explosive device type current-limiting resistor becomes an electrostatic discharge part.
The further technical scheme of the utility model is as follows: the cover body is disc-shaped, and the distance from the fixed hole on the disc surface to the circle center is smaller than the distance from other mounting holes to the circle center.
The further technical scheme of the utility model is as follows: the insulating layer is formed by sequentially laying an asbestos pad, epoxy phenolic aldehyde and an asbestos pad to form a structure with the same outer diameter as that of the cover body; the asbestos pad is made of asbestos paper by a punch press, wherein a plurality of through holes are uniformly distributed on the asbestos pad far away from the cover body in the circumferential direction, and a central hole is formed in the center of the asbestos pad; the center and the circumference of the epoxy phenolic aldehyde are also provided with a central hole and a through hole, and the positions of the holes correspond to the positions of the holes on the asbestos pad far away from the cover body one by one; a central hole is not formed in the center of the asbestos pad close to the cover body, a plurality of through holes are uniformly distributed in the circumferential direction, and the positions of the through holes correspond to the positions of the through holes in the phenolic aldehyde one by one.
The further technical scheme of the utility model is as follows: the central hole is used for placing an electric ignition head, and the through hole is used for placing a wiring terminal.
The further technical scheme of the utility model is as follows: the sealing rubber is 704 silicon rubber.
The further technical scheme of the utility model is as follows: and the binding post and the inner wall of the mounting hole of the cover body are sealed by sintering through a glass sealing insulator, the part of the binding post exposed out of the cover body is positioned in the glass fiber sleeve, and the part of the binding post exposed out of the cover body and the inner wall of the glass fiber sleeve are sealed in an insulating way through 704 silicon rubber.
The further technical scheme of the utility model is as follows: the initiating explosive device type current-limiting resistor is thick at two ends and thin in the middle, one end of the initiating explosive device type current-limiting resistor is connected with the wiring terminal in the fixed hole, and the other end of the initiating explosive device type current-limiting resistor is connected with the wiring terminal in one of the through holes.
The further technical scheme of the utility model is as follows: the initiating explosive device type current-limiting resistor is fixedly connected with the wiring terminal in a tin soldering welding mode.
The further technical scheme of the utility model is as follows: the distance between the initiating explosive device type current-limiting resistor and the upper end face of the cover body is not more than 1 mm.
The further technical scheme of the utility model is as follows: the distance between the initiating explosive device type current-limiting resistor and the cover body surface, the distance between the electric ignition head and the cover body, the distance between the binding post and the cover body, and the distance between the electric ignition head lead and the stand column ensures that the distance between the initiating explosive device type current-limiting resistor and the cover body surface is shortest.
Effects of the utility model
The utility model has the technical effects that: adopt the anti-static structure of this novel design, the thermal battery that the assembly was accomplished carries out the static sensitivity test, with the 500pF 50pF condenser to 25kV +/-0.5 kV that charges, lead to 5000 omega 500 omega's series resistance, to discharging between activation return circuit and the thermal battery metal casing lid after the short circuit, repeat this experiment 10 times, can obviously see the static point of bleeding between resistance and the lid, the phenomenon of static mistake activation all does not appear in the thermal battery, it is good to prove that this structure prevents static effect, high reliability.
Further, this is novel the advantage and the positive effect that hot battery antistatic structure has are:
1. the anti-static structure is simple and convenient to operate, and is a universal insulating material and a process operation method in the field of thermal batteries;
2. the anti-static structure effectively isolates the static discharge between the bridge wire of the electric ignition head of the activation loop and the cover body through the protection and physical interval design of the insulating material.
3. Through design resistance and lid static discharge channel, guarantee the uniqueness of 25kV static discharge point, and this static discharge point visual inspection has improved the thermal battery security through static discharge.
Drawings
FIG. 1 is a schematic view of an antistatic structure on the upper end surface of the cover body of the thermal battery;
FIG. 2 is a schematic view of the antistatic structure of the lower end surface of the cover body of the thermal battery;
FIG. 3 is a schematic view of the cover in the anti-static structure;
fig. 4 is a schematic view of the asbestos pad in the antistatic structure.
Description of reference numerals: 1-cover body, 2-asbestos pad, 3-initiating explosive device type current-limiting resistor, 4-704 silicon rubber, 5-glass fiber sleeve for fixing 704 silicon rubber encapsulation position, 6-antistatic structure for fixing electronic component fixing device (glass fiber sleeve is sleeved and 704 silicon rubber is encapsulated) 7-epoxy phenolic; firstly, the distance between the resistor and the cover body surface is 1 mm; indicating that the distance between the electric ignition head and the cover body is 2 mm; thirdly, the distance between the wiring terminal and the cover body is 2-5 mm; fourthly, the distance between the lead of the electric ignition head and the upright post is 7.5mm
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
For a further understanding of the contents, features and effects of the present invention, reference will now be made to the following examples, which are given by way of illustration and not of limitation, and the scope of the present invention shall not be limited thereby, but rather by the accompanying drawings, in which:
referring to fig. 1 to 4, the technical solution adopted by the present invention to solve the technical problems existing in the prior art is as follows:
the utility model provides a thermal battery anti-static structure design, which is specifically designed as follows: 1. the electric ignition head of the thermal battery is physically isolated from the cover body by adopting an insulating material, and the shortest distance between the electric ignition head and the cover body is 2 mm; 2. the upper end surface of the thermal battery cover body is packaged by 704 silicon rubber and a glass fiber sleeve for physical isolation; 3. the thermal battery design activates the loop static leakage channel, the distance between the used initiating explosive device current-limiting resistor design and the end face of the cover body is not more than 1mm, and physical isolation is not carried out.
The insulating material is asbestos paper for the thermal battery, the specification is 905/4, and the asbestos pad is punched by a punch press.
The glass fiber sleeve is a fiber sleeve for a thermal battery.
Two binding posts are specially designed on the cover body and used as a fixing device for rigidly fixing the current-limiting resistor of the initiating explosive device of the activation loop.
The static leakage channel of the activation loop is formed by welding the initiating explosive device current-limiting resistor on the binding post, wherein the distance between the resistor and the end face of the cover body is not more than 1mm, and the static leakage channel is ensured to be formed by the static 'tip' discharge principle.
Example (b):
referring to fig. 3, a cover body is processed, and two independent binding posts different from a conventional cover body are arranged on the cover body and used for rigidly fixing the initiating explosive device current-limiting resistor; referring to fig. 4, the thermal battery is punched into the shown asbestos pad by using asbestos material, the asbestos pad is assembled according to the distribution positions of the binding posts of the cover body in fig. 3, then the electric ignition head used by the thermal battery is assembled on the asbestos pad, the electric ignition head and the cover body are physically isolated by using insulating material asbestos paper, and the designed physical isolation distance is 2mm, as shown in fig. 2; referring to fig. 1, an electronic component is fixed between two fixing devices (terminals) by soldering and welding outside a cover body, and finally, glass fiber sleeves are sleeved on all the terminals and silicon rubber is encapsulated 704, wherein the distance between a resistor and the cover body is about 1 mm.
Claims (10)
1. An anti-static structure for a thermal battery is characterized by comprising a cover body (1), an insulating layer, an initiating explosive device type current-limiting resistor (3), sealing rubber and a glass fiber sleeve (5);
the cover body (1) is provided with a plurality of mounting holes for placing binding posts, and is also provided with fixing holes for fixing the initiating explosive device type current-limiting resistor (3);
the insulating layer is used for insulating the cover body (1) and an electric ignition head of the battery;
the glass fiber sleeves (5) are respectively positioned on the fixing holes and each mounting hole; the welding position of the cable and the binding post is encapsulated by sealing rubber in the glass fiber sleeve (5);
the initiating explosive device type current-limiting resistor (3) is used as an electrostatic gathering carrier and is positioned between two binding posts on the cover body (1), and the distance between the initiating explosive device type current-limiting resistor (3) and the cover body (1) is compared with the distance between other components and the cover body (1), so that the shortest distance is ensured, and the initiating explosive device type current-limiting resistor becomes an electrostatic discharge part.
2. The antistatic structure for the thermal battery as claimed in claim 1, wherein the cover body (1) is disk-shaped, and the distance from the center of the disk to the fixing hole (6) is smaller than the distance from the center of the other mounting holes.
3. The antistatic structure for the thermal battery according to claim 1, wherein the insulating layer is formed by sequentially laying an asbestos pad (2), an epoxy phenol formaldehyde (7) and the asbestos pad (2) to form a structure with the same outer diameter as that of the cover body (1); the asbestos pad (2) is made of asbestos paper by a punch press, wherein a plurality of through holes are uniformly distributed on the asbestos pad far away from the cover body (1) in the circumferential direction, and a central hole is formed in the center of the asbestos pad; the center and the circumference of the epoxy phenolic aldehyde (7) are also provided with a center hole and a through hole, and the positions of the holes correspond to the positions of the holes on the asbestos pad far away from the cover body (1) one by one; a central hole is not formed in the center of the asbestos pad close to the cover body (1), a plurality of through holes are uniformly distributed in the circumferential direction, and the positions of the through holes correspond to the positions of the through holes in the phenolic aldehyde (7) one by one.
4. The antistatic structure for a thermal battery as claimed in claim 3, wherein the central hole is used for placing an electric ignition head, and the through hole is used for placing a binding post.
5. The antistatic structure for a thermal battery as claimed in claim 4, wherein the sealing rubber is 704 silicone rubber.
6. The antistatic structure for the thermal battery as claimed in claim 1, wherein the terminal post is sealed with the inner wall of the mounting hole of the cover body (1) by sintering through a glass sealing insulator, the part of the terminal post exposed out of the cover body is positioned in the glass fiber sleeve (5), and is sealed with the inner wall of the glass fiber sleeve (5) by insulating through 704 silicone rubber.
7. The antistatic structure for the thermal battery as claimed in claim 6, wherein the pyrotechnic current limiting resistor (3) has a shape with thick ends and thin middle, one end of which is connected with the terminal in the fixing hole (6) and the other end of which is connected with the terminal in one of the through holes.
8. The antistatic structure for the thermal battery as claimed in claim 6, wherein the initiating explosive device type current limiting resistor (3) is fixedly connected with the terminal by soldering.
9. The antistatic structure for a thermal battery as claimed in claim 1, wherein the distance between the pyrotechnic current limiting resistor (3) and the upper end surface of the cover body (1) is not more than 1 mm.
10. The antistatic structure as claimed in claim 1, wherein the distance between the primer type current limiting resistor and the cover surface, the distance between the electric igniter and the cover, the distance between the terminal post and the cover, and the distance between the lead of the electric igniter and the pillar ensure the shortest distance between the primer type current limiting resistor and the cover surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122556893.6U CN216217673U (en) | 2021-10-24 | 2021-10-24 | Anti-static structure for thermal battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122556893.6U CN216217673U (en) | 2021-10-24 | 2021-10-24 | Anti-static structure for thermal battery |
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| Publication Number | Publication Date |
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| CN216217673U true CN216217673U (en) | 2022-04-05 |
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| CN202122556893.6U Active CN216217673U (en) | 2021-10-24 | 2021-10-24 | Anti-static structure for thermal battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114865178A (en) * | 2022-05-25 | 2022-08-05 | 西安北方庆华机电有限公司 | Electro-active thermal battery combined cover body structure |
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2021
- 2021-10-24 CN CN202122556893.6U patent/CN216217673U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114865178A (en) * | 2022-05-25 | 2022-08-05 | 西安北方庆华机电有限公司 | Electro-active thermal battery combined cover body structure |
| CN114865178B (en) * | 2022-05-25 | 2024-04-05 | 西安北方庆华机电有限公司 | Combined cover structure of electric-activated thermal battery |
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