CN211295302U

CN211295302U - Cylindrical nickel-hydrogen battery with good low-temperature performance

Info

Publication number: CN211295302U
Application number: CN201922369349.3U
Authority: CN
Inventors: 刘运生; 于红帅
Original assignee: Huizhou Modern Battery Ltd
Current assignee: GP BATTERIES (DONGGUAN) CO.,LTD.
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-08-18
Anticipated expiration: 2029-12-24

Abstract

The cylindrical nickel-hydrogen battery with good low-temperature performance is provided with a conductive external member, a sealing cover external member and a heat-insulating external member; the arrangement of the heat insulation external member can prevent the excessive heat in the battery from being dissipated out of the battery, thereby ensuring the performance of the battery in a low-temperature state and avoiding the excessive performance reduction of the battery due to the over-low temperature; the arrangement of the sliding block and the elastic piece, and the arrangement of the positioning groove and the sliding groove are additionally arranged, so that the detachable connection between the sealing cover suite and the positive cover is realized, a user can replace the sealing cover suite with eccentric wear, and the phenomenon of poor contact between the cover body and an electric appliance due to the eccentric wear of the cover body is avoided; the setting of protruding grain of friction has avoided the lid direct with the outside electrically conductive shell fragment direct contact on the electrical apparatus to the life of lid has been prolonged, further prevents that lid and electrical apparatus from taking place the eccentric wear, has improved the durability of closing cap external member, and then has improved the life of battery.

Description

Cylindrical nickel-hydrogen battery with good low-temperature performance

Technical Field

The utility model relates to a nickel-metal hydride battery technical field especially relates to a cylinder type nickel-metal hydride battery that low temperature performance is good.

Background

A nickel-metal hydride battery is a storage battery with good performance. The positive electrode of the cell of the nickel-hydrogen battery is nickel, and the negative electrode of the cell is a high-energy charging cell of hydrogen. The nickel-metal hydride battery has the advantages of no memory effect, no pollution to the environment, environmental protection, moderate unit price, higher capacity than cadmium electricity, lower capacity than lithium electricity, heavier weight than lithium electricity and lighter weight than cadmium electricity compared with nickel-cadmium and lithium battery cores with the same size. The nickel-metal hydride batteries can be classified into cylindrical nickel-metal hydride batteries and square nickel-metal hydride batteries according to different shapes. At present, most of battery tanks of electronic products are designed for cylindrical batteries, so that the application range of the cylindrical batteries is wider.

However, the current cylindrical nickel-hydrogen battery still has the following technical problems that firstly, the performance of the nickel-hydrogen battery is greatly influenced by the ambient temperature due to the difference of the temperature of the use environment, specifically, the temperature is reduced, the internal resistance of the battery is increased, the electrochemical reaction speed in the battery is slowed down, the polarization internal resistance is rapidly increased, the discharge capacity and the discharge platform of the battery are reduced, and the output of the power and the energy of the battery is influenced;

secondly, the end part of the cylindrical nickel-metal hydride battery is used for transmitting the electric energy in the battery to an external electrical appliance, so that the end part of the cylindrical nickel-metal hydride battery is directly propped against a conductive elastic sheet of the external electrical appliance, in the practical application process, the end part of the cylindrical nickel-metal hydride battery and the conductive elastic sheet of the external electrical appliance are mutually abraded, certain abrasion can be generated on the end part of the battery along with the increase of the use times, if eccentric abrasion is generated on the end part of the battery, the contact area between the end part of the battery and the conductive elastic sheet is reduced, and finally the condition of poor contact between the nickel-metal hydride battery and the external electrical appliance is easily caused;

thirdly, the surface of the end of the battery is generally smooth, the end of the battery is generally made of conductive metal materials for realizing the conductive function, the surface of the conductive elastic sheet on the electrical appliance is smooth, and the conductive elastic sheet is also made of metal materials, so that the end of the battery and the conductive elastic sheet are easy to relatively displace due to undersize friction force, in a partially vibrating environment with large vibration, the end of the battery and the conductive elastic sheet are rubbed for more times under the influence of vibration, the abrasion between the conductive sheet and the end of the battery is continuously increased, and the service life of the battery is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the weak point among the prior art, providing a cylinder type nickel-hydrogen battery that low temperature performance is good, it not only has good low temperature performance, can also change the end cover of battery, prevents that the battery from taking place the condition of contact failure because of the eccentric wear of end cover and with outside electrical apparatus, and can prolong battery life.

The purpose of the utility model is realized through the following technical scheme:

a cylindrical nickel-metal hydride battery having excellent low-temperature characteristics, comprising:

the conductive kit comprises a cylindrical shell, a negative cover, a positive cover, an electric core and a conductive piece, wherein the negative cover and the positive cover are respectively arranged on the cylindrical shell, a positioning groove and a sliding groove are formed in the positive cover, the sliding groove is communicated with the positioning groove, the cylindrical shell, the negative cover and the positive cover jointly enclose an accommodating cavity, the electric core is arranged in the accommodating cavity, the electric core is connected with the negative cover, the conductive piece is arranged on the positive cover, and the conductive piece is connected with the electric core;

the sealing cover comprises a cover body, a push rod, a positioning column, a sliding block, an elastic part and a plurality of friction convex grains, wherein the cover body is provided with a through hole, the push rod is arranged in the through hole in a sliding manner, the positioning column is arranged on the cover body, the positioning column is provided with a sliding channel, the sliding block is arranged in the sliding channel in a sliding manner, the elastic part is arranged in the sliding channel, the elastic part is connected with the sliding block, and each friction convex grain is arranged on the cover body; and

the heat insulation sleeve comprises a heat insulation layer and a buffer layer, the heat insulation layer is arranged on the cylindrical shell, and the buffer layer is arranged on the heat insulation layer;

the cover body is used for moving towards the direction close to the positive electrode cover, so that the positioning column is inserted into the positioning groove, and the sliding block is inserted into the sliding groove.

In one embodiment, the thermal kit further includes an insulating layer disposed on the buffer layer.

In one embodiment, the battery cell includes a positive plate, an isolation film and a negative plate, the positive plate, the isolation film and the negative plate are respectively disposed in the accommodating cavity, one side of the isolation film is in close contact with the positive plate, the other side of the isolation film is in close contact with the negative plate, the negative plate is connected with the negative cover, one end of the conducting piece is connected with the positive plate, and the other end of the conducting piece is connected with the positive cover.

In one embodiment, the heat-insulating kit further comprises a heat-insulating ring, and the heat-insulating ring is arranged on the positive electrode cover.

In one embodiment, the slider is provided with a chamfer slope.

In one embodiment, each friction bump is distributed in axial symmetry with the central axis of the cover body.

In one embodiment, the resilient member is a spring.

In one embodiment, the closure assembly further comprises a guard ring wall disposed on the cap body.

In one embodiment, the protective ring wall, the cover body and each friction protrusion are integrally formed.

In one embodiment, the sealing cover kit further includes a limiting post disposed in the sliding channel, and the elastic member is sleeved on the limiting post.

Compared with the prior art, the utility model discloses advantage and beneficial effect below having at least:

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a cylindrical nickel-metal hydride battery with good low-temperature performance according to an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of the cylindrical nickel-metal hydride battery with good low-temperature performance shown in FIG. 1 at A;

FIG. 3 is an enlarged schematic view of the cylindrical nickel-metal hydride battery with good low-temperature performance shown in FIG. 1 at the position B;

fig. 4 is a schematic diagram of an internal structure of a cylindrical nickel-metal hydride battery with good low-temperature performance according to an embodiment of the present invention.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, a cylindrical nickel-metal hydride battery 10 with good low-temperature performance includes a conductive kit 100, a cover kit 200 and a heat-insulating kit 300, wherein the cover kit 200 is detachably mounted on the conductive kit 100, and the heat-insulating kit 300 is disposed on the cover kit 200.

Thus, it should be noted that the cylindrical nickel-metal hydride battery 10 with good low-temperature performance is used for supplying power to external electrical appliances; the conductive sleeve 100 is used for transmitting current to an external electrical appliance; the cover assembly 200 is used to directly contact with the conductive spring of the electrical appliance.

Referring to fig. 1 and fig. 2, the conductive kit 100 includes a cylindrical casing 110, a negative cover 120, a positive cover 130, a battery cell 150, and a conductive element 160, wherein the negative cover 120 and the positive cover 130 are respectively disposed on the cylindrical casing 110, the positive cover 130 is provided with a positioning slot 131 and a sliding slot 132, the sliding slot 132 is communicated with the positioning slot 131, the cylindrical casing 110, the negative cover 120 and the positive cover 130 together enclose an accommodating cavity 170, the battery cell 150 is disposed in the accommodating cavity 170, the battery cell 150 is connected to the negative cover 120, the conductive element 160 is disposed on the positive cover 130, and the conductive element 160 is connected to the battery cell 150.

In this way, it should be noted that the cylindrical case 110, the negative electrode cover 120 and the positive electrode cover 130 together play a role of protecting components located in the accommodating cavity 170; the cells 150 are used for generating electrical energy; the negative cover 120 and the positive cover 130 are used for transmitting the electric energy generated by the battery cell 150 to an external electrical appliance; the conduction piece 160 is used for conducting the battery cell 150 and the positive electrode cover 130; the positioning slot 131 functions to position and mount the cap assembly 200.

Referring to fig. 3, the sealing cover kit 200 includes a cover 210, a positioning post 220, a sliding block 230, an elastic member 240, a top rod 260 and a plurality of friction convex particles 250, the cover 210 is provided with a through hole 211, the top rod 260 is slidably disposed in the through hole 211, the positioning post 220 is disposed on the cover 210, the positioning post 220 is provided with a sliding channel 221, the sliding block 230 is slidably disposed in the sliding channel 221, the elastic member 240 is connected to the sliding block 230, and each friction convex particle 250 is disposed on the cover 210; the cover 210 is configured to move toward the positive electrode cover 130, so that the positioning posts 220 are inserted into the positioning slots 131, and the sliding blocks 230 are inserted into the sliding slots 132. Specifically, the elastic member 240 is a spring.

Therefore, it should be noted that the cover body 210 is used for transmitting the current generated on the positive electrode cover 130 to the conductive elastic sheet on the external electrical appliance, and meanwhile, the positive electrode cover 130 is prevented from directly contacting with the external electrical appliance, so that a certain protection effect is achieved; the positioning column 220 plays a positioning role; the sliding block 230 plays a role of blocking, and is used for preventing the positioning column 220 from being released from the positioning groove 131; the elastic member 240 serves to provide an elastic force to the slider 230; the friction convex particles 250 are used for increasing the friction force between the cover body 210 and the conductive elastic sheet on the external electrical appliance; the sliding channel 221 serves to guide the slider 230 to slide so that the slider 230 can slide in a predetermined direction.

Referring to fig. 4, in practical application, the specific steps of mounting the cap assembly 200 on the conductive assembly 100 include:

while aligning the positioning post 220 with the positioning slot 131, the cover 210 and the positive electrode cover 130 are close to each other, so that the slot wall of the positioning slot 131 overcomes the elastic force of the elastic member 240, and the sliding block 230 moves along the sliding channel 221 toward the direction close to the elastic member 240, so that the positioning post 220 can be completely inserted into the positioning slot 131;

with the continuous insertion of the positioning post 220, when the sliding channel 221 is aligned with the sliding slot 132, the elastic member 240 will support the sliding block 230 to move in a direction away from the positioning post 220, so that the sliding block 230 is inserted into the sliding slot 132, and the positioning post 220 cannot be removed from the positioning slot 131;

finally, the cover 210 is in close contact with the positive electrode cover 130, so that the positive electrode cover 130 is conducted with the cover 210, and the cover 210 can be prevented from being separated from the positive electrode cover 130.

In addition, when the cover sealing kit 200 needs to be detached, the push rod 260 is pushed to move toward the positioning column 220, so that the push rod 260 is inserted into the sliding groove 132, the push rod 260 pushes the slider 230 against the acting force of the elastic member 240 to move toward the positioning column 220, so that the slider 230 is inserted into the sliding channel 221, the positioning column 220 can be disengaged from the positioning groove 131, and finally the cover 210 can be detached from the positive cover 130.

Referring to fig. 1 again, the thermal insulation kit 300 includes an insulation layer 310 and a buffer layer 320, the insulation layer 310 is disposed on the cylindrical shell 110, and the buffer layer 320 is disposed on the insulation layer 310;

thus, it should be noted that the insulating layer 310 plays a role in maintaining the temperature inside the accommodating cavity 170, so as to prevent the temperature inside the battery from being too low and causing negative effects on the performance of the battery, and ensure the performance of the battery in a low-temperature working environment; the buffer layer 320 plays a role of buffering, and is used for preventing an impact force from directly acting on the heat insulating layer 310, and preventing the heat insulating layer 310 from being damaged due to an excessive impact force, thereby preventing the battery from being incapable of maintaining the temperature inside the battery due to the damage of the heat insulating layer.

Referring again to fig. 1, the thermal insulation kit 300 further includes an insulating layer 330, and the insulating layer 330 is disposed on the buffer layer 320.

Thus, it should be noted that the insulating layer 330 functions as an insulating protection.

Referring to fig. 1 again, the battery cell 150 includes a positive plate 151, an isolation film 152, and a negative plate 153, the positive plate 151, the isolation film 152, and the negative plate 153 are respectively disposed in the accommodating cavity 170, one side of the isolation film 152 is in close contact with the positive plate 151, the other side of the isolation film 152 is in close contact with the negative plate 153, the negative plate 153 is connected with the negative cover, one end of the conductive element 160 is connected with the positive plate 151, and the other end of the conductive element 160 is connected with the positive cover 130.

As described above, the positive electrode tab 151 and the negative electrode tab 153 are used together to generate electric current; the separator 152 serves to prevent the positive electrode tab 151 and the negative electrode tab 153 from contacting each other, and serves to prevent the internal short circuit of the battery.

Referring to fig. 1 again, the heat-insulating kit 200 further includes a heat-insulating ring 400, and the heat-insulating ring 400 is disposed on the positive electrode cover 130.

In this way, it should be noted that the heat-insulating ring 400 is used to prevent the temperature inside the battery from flowing away from the positive electrode cover 130, and further ensure the performance of the battery in a low-temperature environment.

Referring to fig. 4 again, the slider 230 is provided with a chamfer 231.

In this way, it should be noted that the chamfer 231 is provided to enable the positioning post 220 to be smoothly inserted into the positioning slot 131.

Referring to fig. 1 again, the friction protrusions 250 are disposed axially symmetrically with respect to the central axis of the cover 210.

In this way, it should be noted that, by disposing the friction protrusions 250 in an axisymmetric manner with respect to the central axis of the cover 210, the friction forces at the positions of the contact surfaces between the cover 210 and the conductive elastic sheet of the external electrical appliance can be equalized, and the cover 210 and the conductive elastic sheet can be prevented from slipping due to too small local friction force.

Referring to fig. 1 again, the cover assembly 200 further includes a protective ring wall 270, and the protective ring wall 270 is disposed on the cover 210.

Thus, it should be noted that the guard ring wall 270 serves to protect the positive electrode cover 130.

Referring to fig. 1 again, the protective ring wall 270, the cover 210 and the friction protrusions 250 are integrally formed.

As described above, the guard ring wall 270, the cover 210 and the friction protrusions 250 are integrally formed, so that the mechanical strength of the conductive sleeve 100 can be improved, and the durability of the conductive sleeve 100 can be improved.

Referring to fig. 4 again, the cap assembly 200 further includes a limiting post 280, the limiting post 280 is disposed in the sliding channel 221, and the elastic member 230 is sleeved on the limiting post 280.

Thus, it should be noted that the position-limiting columns 280 play a role of positioning the elastic members 230.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A cylinder type nickel-hydrogen battery with good low-temperature performance is characterized by comprising:

2. The cylindrical nickel-metal hydride battery with good low-temperature performance as claimed in claim 1, wherein the thermal insulation kit further comprises an insulation layer, and the insulation layer is disposed on the buffer layer.

3. The cylindrical nickel-hydrogen battery with good low-temperature performance according to claim 1, wherein the battery core comprises a positive plate, an isolation film and a negative plate, the positive plate, the isolation film and the negative plate are respectively disposed in the accommodating cavity, one side of the isolation film is in close contact with the positive plate, the other side of the isolation film is in close contact with the negative plate, the negative plate is connected with the negative cover, one end of the conductive member is connected with the positive plate, and the other end of the conductive member is connected with the positive cover.

4. The cylindrical nickel-metal hydride battery with good low-temperature performance as claimed in claim 1, wherein the thermal insulation kit further comprises a thermal insulation ring, and the thermal insulation ring is disposed on the positive electrode cover.

5. The cylindrical nickel-metal hydride battery with good low-temperature performance as claimed in claim 1, wherein the sliding block is provided with a chamfer.

6. The cylindrical nickel-metal hydride battery with good low-temperature performance as claimed in claim 1, wherein the friction protrusions are axially symmetrically distributed around the central axis of the lid.

7. The cylindrical nickel-metal hydride battery with good low-temperature performance as claimed in claim 1, wherein the elastic member is a spring.

8. The cylindrical nickel-metal hydride battery with good low-temperature performance as claimed in claim 1, wherein the cover assembly further comprises a protective ring wall, and the protective ring wall is disposed on the cover body.

9. The cylindrical nickel-metal hydride battery with good low-temperature performance as claimed in claim 8, wherein the protective ring wall, the cover and the friction protrusions are integrally formed.

10. The cylindrical nickel-metal hydride battery with good low-temperature performance as claimed in claim 1, wherein the cover assembly further comprises a limiting post, the limiting post is disposed in the sliding channel, and the elastic member is disposed on the limiting post.