Sealed metal packaging sensor and battery

Abstract

The invention discloses a sealed metal packaging sensor and a battery. The sealed metal packaging sensor comprises a chip fixing seat, a diaphragm, a circuit board and a sealing nail, the top surface of the chip fixing seat is recessed inwards to form a fixing seat groove, a fixing seat through hole communicated with the fixing seat groove is formed in the middle of the chip fixing seat, the circuit board is assembled in the fixing seat groove, and an induction electrode protruding out of the bottom of the circuit board extends into the fixing seat through hole; the fixed seat through hole is filled with an insulating substrate; the diaphragm is clamped between the chip fixing seat and the sealing nail; the sealing nail comprises a top plate and a connecting rod connected with the bottom surface of the top plate; the outer side wall of the connecting rod is wrapped with an elastic rubber nail. According to the sensor, the liquid injection port of the battery is sealed through the sealing nail, and the circuit board and the diaphragm in the chip fixing seat are used for sensing fine changes in the battery so as to detect the interior of the battery, so that the liquid injection port of the battery can be reliably sealed, the interior of the battery can also be detected, and the application safety of the battery is improved.

Description

Technical Field

[0001] The present invention relates to the field of sensor technology, and in particular to a sealed metal packaged sensor and a battery. Background Art

[0002] The rechargeable battery needs to be filled with a metal salt ion solution so that the electrochemical reaction of the metal salt ion solution can be used for charging and discharging. The battery shell is usually provided with a liquid injection port. After the metal salt ion solution is injected, the liquid injection port needs to be sealed. In the traditional technical method, aluminum nails and plastic nails under the aluminum nails are usually used to seal the liquid injection port. During the charging and discharging process of the battery, its internal temperature and air pressure will change. In particular, when the battery is overheated, it is necessary to monitor the changes in the internal temperature and air pressure of the battery and take corresponding measures to avoid overheating, fire, and explosion of the battery. However, the seal with aluminum nails as the main body cannot effectively detect the temperature and air pressure of the solution inside the battery during the application process, which affects the reliability of the battery equipped with the aluminum nail seal. Therefore, the seal used for sealing the battery liquid injection port in the prior art has the problem of being unable to detect the inside of the battery. Summary of the invention

[0003] The present invention provides a sealed metal package sensor and a battery, aiming to solve the problem in the prior art that the sealing member used for sealing the battery filling port cannot detect the inside of the battery.

[0004] In a first aspect, the present invention discloses a sealed metal package sensor, which includes a chip fixing seat, a diaphragm, a circuit board and a sealing pin; The top surface of the chip fixing seat is inwardly recessed to form a fixing seat groove, a fixing seat through hole communicating with the fixing seat groove is provided in the middle of the chip fixing seat, the circuit board is assembled in the fixing seat groove and the sensing electrode protruding from the bottom of the circuit board extends into the fixing seat through hole; the fixing seat through hole is filled with an insulating substrate; The diaphragm is sandwiched between the chip fixing seat and the sealing pin, and the outer edge size of the diaphragm is the same as the outer size of the chip fixing seat; The sealing nail includes a top plate and a connecting rod connected to the bottom surface of the top plate; the outer wall of the connecting rod is wrapped with an elastic rubber nail; the top plate protrudes toward one end of the diaphragm to form a top plate boss, and the outer size of the top plate boss is the same as the outer edge size of the diaphragm; a rubber nail through hole is provided in the elastic rubber nail, and a connecting rod through hole connected to the rubber nail through hole is provided on the connecting rod, and the connecting rod through hole passes through the top plate.

[0005] In the sealed metal package sensor, a trumpet-shaped fixing seat opening is provided on the side of the chip fixing seat facing the diaphragm, and the smaller opening of the fixing seat opening is connected to the fixing seat through hole.

[0006] The sealed metal packaged sensor, wherein a trumpet-shaped top plate opening is provided on one side of the top plate facing the diaphragm, and the end of the connecting rod through hole is connected to the top plate opening.

[0007] The sealed metal package sensor, wherein a first connecting ring is formed on the bottom surface of the chip fixing seat around the larger opening of the fixing seat opening, and the top plate boss is formed around the outer side of the top plate opening to form a second connecting ring; The first connecting ring and the second connecting ring have the same size.

[0008] The sealed metal packaged sensor, wherein the outer edge of the bottom surface of the chip fixing seat is provided with an inclined side edge.

[0009] The sealed metal packaged sensor, wherein the outer side wall of the connecting rod is inclined from top to bottom, and the diameter of one end of the connecting rod away from the top plate is larger than the diameter of the other end of the connecting rod.

[0010] The sealed metal packaged sensor, wherein the outer side wall of the top plate is inclined toward one side of the connecting rod.

[0011] In the sealed metal packaged sensor, one side of the top plate connected to the connecting rod is recessed inward to form an annular cavity, and the upper end of the elastic rubber nail is filled in the annular cavity.

[0012] The sealed metal packaged sensor, wherein the end of the elastic rubber nail away from the top plate is provided with an inclined side wall, and the diameter of the end of the elastic rubber nail away from the top plate is smaller than the diameter of the other end of the elastic rubber nail.

[0013] In a second aspect, the present invention further discloses a battery, wherein the battery comprises a housing, an explosion-proof valve, an electrode column, and the sealed metal package sensor as described in the first aspect above; An opening is provided above the shell, a plastic layer is provided at the opening of the shell, a battery top cover is provided above the plastic layer, the battery top cover is covered and arranged on the upper layer of the plastic layer, so that the plastic layer supports and fixes the battery top cover, and the battery top cover and the shell are sealed by welding; The sealed metal package sensor passes through the top cover liquid injection port provided on the battery top cover, and the end of the sealed metal package sensor is embedded in the through hole of the plastic layer for sealing; Two electrode posts respectively penetrate the battery top cover and the plastic layer and extend into the interior of the shell; The battery top cover is provided with a mounting groove on the side of the sealed metal package sensor, and the explosion-proof valve is fixedly assembled in the mounting groove.

[0014] The present invention discloses a sealed metal package sensor and battery, which includes a chip fixing seat, a diaphragm, a circuit board and a sealing pin; the top surface of the chip fixing seat is recessed inward to form a fixing seat groove, the middle part of the chip fixing seat is provided with a fixing seat through hole connected to the fixing seat groove, the circuit board is assembled in the fixing seat groove and the sensing electrode protruding from the bottom of the circuit board extends into the fixing seat through hole; the fixing seat through hole is filled with an insulating substrate; the diaphragm is clamped between the chip fixing seat and the sealing pin; the sealing pin includes a top plate and a connecting rod connected to the bottom surface of the top plate; the outer wall of the connecting rod is wrapped with an elastic rubber pin. The above sensor seals the liquid injection port of the battery through the sealing pin, senses the subtle changes inside the battery through the circuit board and the diaphragm in the chip fixing seat, and detects the inside of the battery, which can not only reliably seal the liquid injection port of the battery, but also detect the inside of the battery, thereby improving the safety of battery application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0016] Figure 1 An exploded structural diagram of a sealed metal package sensor provided in an embodiment of the present invention; Figure 2 A cross-sectional structural diagram of a sealed metal package sensor provided in an embodiment of the present invention; Figure 3 An external structural diagram of a battery provided by an embodiment of the present invention; Figure 4 A cross-sectional structural diagram of a battery provided by an embodiment of the present invention; Figure numbers: 10, sealed metal package sensor; 1, chip fixing seat; 2, diaphragm; 3, circuit board; 4, sealing nail; 11, fixing seat through hole; 5, insulating substrate; 41, top plate; 42, connecting rod; 43, elastic rubber nail; 411, top plate boss; 12, fixing seat opening; 412, top plate opening; 13, inclined side; 413, annular cavity; 6, battery; 61, shell; 62, explosion-proof valve; 63, plastic layer; 64, battery top cover; 641, top cover liquid filling port; 65, electrode column; 431, rubber nail through hole; 421, connecting rod through hole. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0019] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0020] It should be further understood that the terms "and, or" used in the present description and the appended claims refer to and include any and all possible combinations of one or more of the associated listed items.

[0021] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

[0022] The present invention discloses a sealed metal package sensor, such as Figure 1 and Figure 2As shown, the sealed metal package sensor 10 includes a chip fixing seat 1, a diaphragm 2, a circuit board 3 and a sealing nail 4; the top surface of the chip fixing seat 1 is recessed inward to form a fixing seat groove, and the middle part of the chip fixing seat 1 is provided with a fixing seat through hole 11 connected to the fixing seat groove, the circuit board 3 is assembled in the fixing seat groove, and the protruding sensing electrode at the bottom of the circuit board 3 extends into the fixing seat through hole 11; the fixing seat through hole 11 is filled with an insulating substrate 5; the diaphragm 2 is sandwiched between the chip fixing seat 1 and the sealing nail 4, and the outer edge size of the diaphragm 2 is The size is the same as the outer size of the chip fixing seat 1; the sealing nail 4 includes a top plate 41 and a connecting rod 42 connected to the bottom surface of the top plate 41; the outer wall of the connecting rod 42 is wrapped with an elastic glue nail 43; the top plate 41 protrudes toward one end of the diaphragm 2 to form a top plate boss 411, and the outer size of the top plate boss 411 is the same as the outer edge size of the diaphragm 2; a glue nail through hole 431 is provided in the elastic glue nail 43, and a connecting rod through hole 421 connected to the glue nail through hole 431 is provided on the connecting rod 42, and the connecting rod through hole 421 passes through the top plate 41.

[0023] Specifically, a sealed metal package sensor 10 can be provided, which is composed of a chip fixing seat 1, a circuit board 3, a diaphragm 2 and a sealing pin 4, and the diaphragm 2 is clamped between the sealing pin 4 and the chip fixing seat 1. Among them, the materials of the diaphragm 2, the chip fixing seat 1 and the top plate 41 in the sealing pin 4 are all aluminum or aluminum alloy, and laser melting welding can be used between the diaphragm 2 and the chip fixing seat 1 and between the diaphragm 2 and the top plate 41, and the welding temperature is 700-1000°C. The use of aluminum or aluminum alloy to manufacture the diaphragm 2, the chip fixing seat 1 and the top plate 41 can greatly reduce the welding temperature, avoid excessive temperature from being transmitted to one side of the circuit board 3 and thus damaging the sensor device on the circuit board 3, that is, it can improve the yield rate of the above-mentioned sensor production. Among them, the circuit board 3 can be a ceramic plate prepared by ceramic material.

[0024] Among them, the top plate 41 and the connecting rod 42 are connected to form an integral structure, and the top plate 41 and the connecting rod 42 can be prepared by an integral molding process. The elastic rubber nail 43 can be formed by wrapping a flexible rubber layer and arranged on the outside of the connecting rod 42. The insulating substrate 5 is filled in the gap between the fixing seat through hole 11 and the sensing electrode, so that the components in the fixing seat through hole 11 are more compact, and the insulation and the stability of fixing the sensing electrode are improved. The pressure changes inside the battery 6 are sensed through the rubber nail through hole 431 and the connecting rod through hole 421, and the slight vibrations are transmitted to the diaphragm 2. The diaphragm 2 generates slight vibrations and causes slight changes in the volume of the fixing seat through hole 11 and transmits the slight vibrations to the sensing electrode. The slight vibrations are sensed by the sensing electrode to achieve accurate detection of the inside of the battery 6.

[0025] Specifically, the outer dimensions of the top plate boss 411, the outer edge dimensions of the diaphragm 2, and the outer dimensions of the chip holder 1 can be set to be the same, thereby improving the stability of fixing the diaphragm 2. In the specific embodiment of the present application, the outer wall of the top plate boss 411, the outer wall of the diaphragm 2, and the outer wall of the chip holder 1 are all circular, so the outer diameter of the top plate boss 411, the outer diameter of the diaphragm 2, and the outer diameter of the chip holder 1 can be set to be equal.

[0026] In a more specific embodiment, the chip holder 1 is provided with a trumpet-shaped holder opening 12 on the side facing the diaphragm 2, and the smaller opening of the holder opening 12 is communicated with the holder through hole 11. The top plate 41 is provided with a trumpet-shaped top plate opening 412 on the side facing the diaphragm 2, and the end of the connecting rod through hole 421 is communicated with the top plate opening 412.

[0027] Since the chip fixing seat 1 is provided with a trumpet-shaped fixing seat opening 12, the side wall of the fixing seat opening 12 is an inclined side wall. This inclined side wall can improve the stability of the fixed connection between the chip fixing seat 1 and the diaphragm 2 without affecting the detection performance of the circuit board 3, and increase the overall structural strength of the sealed metal package sensor 10. At the same time, a trumpet-shaped top plate opening 412 can be provided on the side of the top plate 41 facing the diaphragm 2, and the outer opening of the top plate opening 412 is arranged opposite to the fixing seat opening 12, and the inner opening of the top plate opening 412 is connected to the end of the connecting rod through hole 421; due to the trumpet-shaped top plate opening 412, the space on both sides of the diaphragm 2 is wider, so that both sides of the diaphragm 2 can sense and efficiently conduct the vibration of the cavity.

[0028] More specifically, a first connecting ring is formed on the bottom surface of the chip fixing seat 1 around the larger opening of the fixing seat opening 12, and the top plate boss 411 forms a second connecting ring around the outer side of the top plate opening 412; the first connecting ring and the second connecting ring have the same size. Specifically, an inclined side edge 13 is provided at the outer edge of the bottom surface of the chip fixing seat 1.

[0029] Furthermore, in order to improve the stability of the diaphragm 2, a first connecting ring can be set on the bottom surface of the chip fixing seat 1, and a second connecting ring can be set on the top plate boss 411. The first connecting ring and the second connecting block can be set to the same size, wherein the width of the first connecting ring and the second connecting ring can be set to 0.8-43mm. Further, in order to improve the reliability of welding and fixing the chip fixing seat 1 and the diaphragm 2, an inclined side edge 13 can be set at the outer edge of the bottom surface of the chip fixing seat 1. The inclined side edge 13 can greatly reduce the deformation of the diaphragm 2 during the welding process, thereby improving the application effect of sensing detection through the diaphragm 2.

[0030] In a more specific embodiment, the outer side wall of the connecting rod 42 is inclined from top to bottom, and the diameter of the end of the connecting rod 42 away from the top plate 41 is larger than the diameter of the other end of the connecting rod 42. Specifically, the outer side wall of the top plate 41 is inclined toward one side of the connecting rod 42.

[0031] In order to increase the sealing effect of the sealing nail 4, the diameter of the end of the connecting rod 42 away from the top plate 41 can be set to be larger, so that the end of the connecting rod 42 away from the top plate 41 has a greater structural strength and can prevent the elastic nail 43 from loosening, thereby improving the application effect of sealing the plastic layer 63 inside the battery 6. Furthermore, the outer wall of the top plate 41 can be set to be inclined toward one side of the connecting rod 42, so that the top plate 41 can be more smoothly embedded in the top cover injection port 641 on the battery 6, thereby improving the convenience and reliability of assembling the sealed metal package sensor 10 on the battery 6.

[0032] In a more specific embodiment, one side surface of the top plate 41 connected to the connecting rod 42 is inwardly recessed to form an annular cavity 413, and the upper end of the elastic rubber nail 43 is filled in the annular cavity 413. The end of the elastic rubber nail 43 away from the top plate 41 is provided with an inclined side wall, and the diameter of the end of the elastic rubber nail 43 away from the top plate 41 is smaller than the diameter of the other end of the elastic rubber nail 43.

[0033] In order to further improve the sealing effect of the elastic rubber nail 43, an annular cavity 413 can be set on the side where the top plate 41 and the connecting rod 42 are connected, that is, an annular cavity 413 is set on the bottom surface of the top plate 41, and the elastic rubber nail 43 can be filled into the annular cavity 413 and wrap the area where the top plate 41 and the connecting rod 42 are connected. Since the annular cavity 413 is added and the elastic rubber nail 43 is able to contact the top surface of the top cover liquid injection port 641, the reliability of the elastic rubber nail 43 sealing the top cover liquid injection port 641 is further improved.

[0034] Since the elastic nail 43 needs to be embedded in the through hole of the plastic layer 63 for sealing, in order to improve the convenience of assembling the elastic nail 43, the diameter of one end of the elastic nail 43 away from the top plate 41 can be set to be smaller than the diameter of the other end. The specific setting structure is as follows Figure 2 As shown in the sealing nail 4 in FIG. The main body of the elastic nail 43 can be set as a cylinder, and only the end of the elastic nail 43 away from the top plate 41 is provided with an inclined side wall.

[0035] The present invention also discloses a battery 6, such as Figure 3 Diaphragm 2 and Figure 4As shown in the circuit board 3, the battery 6 includes a shell 61, an explosion-proof valve 62, an electrode column 65 and the sealed metal package sensor 10 as described in the above embodiment; an opening is provided on the top of the shell 61, a plastic layer 63 is provided at the opening of the shell 61, and a battery top cover 64 is provided on the plastic layer 63, and the battery top cover 64 is covered and arranged on the upper layer of the plastic layer 63, so that the plastic layer 63 supports and fixes the battery top cover 64, and the battery top cover 64 and the shell 61 are sealed by welding; the sealed metal package sensor 10 passes through the top cover liquid injection port 641 provided on the battery top cover 64 and the end of the sealed metal package sensor 10 is embedded in the through hole of the plastic layer 63 for sealing; two electrode columns 65 respectively pass through the battery top cover 64 and the plastic layer 63 and extend into the shell 61; the battery top cover 64 is provided with a mounting groove on the side of the sealed metal package sensor 10, and the explosion-proof valve 62 is fixedly assembled in the mounting groove.

[0036] The present invention discloses a sealed metal package sensor 10 and a battery 6, which comprises a chip fixing seat 1, a diaphragm 2, a circuit board 3 and a sealing nail 4; the top surface of the chip fixing seat 1 is inwardly recessed to form a fixing seat groove, the middle part of the chip fixing seat 1 is provided with a fixing seat through hole 11 connected to the fixing seat groove, the circuit board 3 is assembled in the fixing seat groove and the sensing electrode protruding from the bottom of the circuit board 3 extends into the fixing seat through hole 11; the fixing seat through hole 11 is filled with an insulating substrate 5; the diaphragm 2 is sandwiched between the chip fixing seat 1 and the sealing nail 4; the sealing nail 4 comprises a top plate 41 and a connecting rod 42 connected to the bottom surface of the top plate 41; the outer wall of the connecting rod 42 is wrapped with an elastic rubber nail 43. The above sensor seals the liquid injection port of the battery 6 through the sealing nail 4, senses the subtle changes inside the battery 6 through the circuit board 3 and the diaphragm 2 in the chip fixing seat 1, and detects the inside of the battery 6, which can not only reliably seal the liquid injection port of the battery 6, but also detect the inside of the battery 6, thereby improving the safety of the battery 6 application.

[0037] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A sealed metal package sensor, characterized in that: It includes a chip fixing seat, a diaphragm, a circuit board and a sealing pin; The top surface of the chip fixing seat is inwardly recessed to form a fixing seat groove, a fixing seat through hole communicating with the fixing seat groove is provided in the middle of the chip fixing seat, the circuit board is assembled in the fixing seat groove and the sensing electrode protruding from the bottom of the circuit board extends into the fixing seat through hole; the fixing seat through hole is filled with an insulating substrate; The diaphragm is sandwiched between the chip fixing seat and the sealing pin, and the outer edge size of the diaphragm is the same as the outer size of the chip fixing seat; The sealing nail includes a top plate and a connecting rod connected to the bottom surface of the top plate; the outer wall of the connecting rod is wrapped with an elastic rubber nail; the top plate protrudes toward one end of the diaphragm to form a top plate boss, and the outer size of the top plate boss is the same as the outer edge size of the diaphragm; a rubber nail through hole is provided in the elastic rubber nail, and a connecting rod through hole connected to the rubber nail through hole is provided on the connecting rod, and the connecting rod through hole passes through the top plate.

2. The sealed metal package sensor according to claim 1, characterized in that: A trumpet-shaped fixing seat opening is provided on one side of the chip fixing seat facing the diaphragm, and a smaller opening of the fixing seat opening is communicated with the fixing seat through hole.

3. The sealed metal package sensor according to claim 2, characterized in that: A trumpet-shaped top plate opening is provided on one side of the top plate facing the diaphragm, and the end of the connecting rod through hole is communicated with the top plate opening.

4. The sealed metal package sensor according to claim 3, characterized in that: A first connection ring is formed on the bottom surface of the chip fixing seat around the larger opening of the fixing seat opening, and the top plate boss is formed around the outer side of the top plate opening to form a second connection ring; The first connecting ring and the second connecting ring have the same size.

5. The sealed metal package sensor according to claim 4, characterized in that: The outer edge of the bottom surface of the chip fixing seat is provided with an inclined side edge.

6. The sealed metal package sensor according to any one of claims 1 to 5, characterized in that: The outer side wall of the connecting rod is inclined from top to bottom, and the diameter of one end of the connecting rod away from the top plate is larger than the diameter of the other end of the connecting rod.

7. The sealed metal package sensor according to claim 6, characterized in that: The outer side wall of the top plate is inclined toward one side of the connecting rod.

8. The sealed metal package sensor according to claim 6, characterized in that: One side surface of the top plate connected to the connecting rod is inwardly recessed to form an annular cavity, and the upper end of the elastic rubber nail is filled in the annular cavity.

9. The sealed metal package sensor according to claim 8, characterized in that: An end of the elastic glue nail away from the top plate is provided with an inclined side wall, and a diameter of the end of the elastic glue nail away from the top plate is smaller than a diameter of the other end of the elastic glue nail.

10. A battery, characterized in that: The battery comprises a shell, an explosion-proof valve, an electrode column and a sealed metal package sensor as claimed in any one of claims 1 to 9; An opening is provided above the shell, a plastic layer is provided at the opening of the shell, a battery top cover is provided above the plastic layer, the battery top cover is covered and arranged on the upper layer of the plastic layer, so that the plastic layer supports and fixes the battery top cover, and the battery top cover and the shell are sealed by welding; The sealed metal package sensor passes through the top cover liquid injection port provided on the battery top cover, and the end of the sealed metal package sensor is embedded in the through hole of the plastic layer for sealing; Two electrode posts respectively penetrate the battery top cover and the plastic layer and extend into the interior of the shell; The battery top cover is provided with a mounting groove on the side of the sealed metal package sensor, and the explosion-proof valve is fixedly assembled in the mounting groove.

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