Ejector rod supporting structure of internal electrode of nickel-hydrogen battery

Abstract

The invention discloses an ejector rod supporting structure of an internal electrode of a nickel-hydrogen battery, and belongs to the technical field of batteries. The battery pack is arranged in the shell; the center rod penetrates through the battery pack, two ends of the center rod are respectively fixed on shell walls at two ends of the shell, and an elastic reset mechanism is arranged between the center rod and the shell and used for reducing shaking of the battery pack. The shell expands due to increase of internal pressure in the battery charging period, the center rod supports the two ends of the shell, and the battery pack is protected against damage.

Description

Technical Field

[0001] The invention belongs to the technical field of batteries, and in particular relates to a mandrel supporting structure for internal electrodes of a nickel-hydrogen battery. Background Art

[0002] In recent years, with the accelerated construction of new energy systems, electrochemical energy storage technology has exploded, and technical routes are also flourishing. Among them, nickel-hydrogen batteries, as a new type of energy storage battery, have the advantages of long cycle life, no risk of fire or thermal runaway, flexible charging and discharging speed, no need for routine maintenance, good high and low temperature operation, low cost, no toxic substances, and 100% recycling. It can be used in energy storage application scenarios such as renewable energy distribution storage, grid peak and frequency regulation services, and building energy storage integration. It is particularly suitable for long-term energy storage and has broad prospects. It has become a "hot industry" in the field of new energy. Nickel-hydrogen batteries are a key research and development direction in the field of new energy. How to fix the battery pack is a key research topic. Summary of the invention

[0003] In order to solve the above problems, the present invention adopts the following technical solutions:

[0004] A mandrel support structure for internal electrodes of a nickel-hydrogen battery, comprising:

[0005] shell;

[0006] A battery pack, the battery pack being arranged inside the housing;

[0007] A center rod passes through the battery pack, and two ends of the center rod are respectively fixed on the shell walls at two ends of the shell. An elastic reset mechanism is provided between the center rod and the shell to reduce the shaking of the battery pack.

[0008] Furthermore, the shell is cylindrical, and both ends are hemispherical.

[0009] Furthermore, it also includes:

[0010] A positive terminal, the positive terminal being disposed on the housing, the positive terminal being provided with a positive feedthrough, the positive feedthrough being connected to a positive bus bar of the battery pack;

[0011] A negative terminal is disposed on the housing and is arranged diagonally with the positive terminal. A negative electrode feedthrough is disposed on the negative terminal and is connected to a negative electrode bus bar of the battery pack.

[0012] Furthermore, the connector between the positive electrode feedthrough and the positive electrode bus bar of the battery pack, and the connector between the negative electrode feedthrough and the negative electrode bus bar of the battery pack are both flexibly connected.

[0013] Furthermore, the central rod comprises:

[0014] a middle section, the middle section running through the center of the battery pack;

[0015] Two fixing sections, the first ends of the two fixing sections are respectively connected to the two ends of the middle section, and the second ends are respectively connected to the corresponding elastic reset mechanisms.

[0016] Furthermore, the two fixed sections are connected to the middle section via threads.

[0017] Furthermore, the elastic reset mechanism comprises:

[0018] A shell body, wherein the shell body is fixed on the inner side of the outer shell, and the second end of the fixing section passes through the shell body and extends to the inside of the shell body;

[0019] A guide groove, the guide groove is fixed on the inner concave surface of the shell and is arranged along the circumference of the shell;

[0020] Two guide rods, wherein the first ends of the two guide rods are hinged to the second end of the fixed section, the second ends of the guide rods are hinged with guide blocks, and the guide blocks are inserted into the guide grooves;

[0021] Two return springs are provided corresponding to the two guide rods, and the first end of the return spring abuts against the guide block, and the second end abuts against the shell.

[0022] Beneficial effects:

[0023] The outer shell of the present invention expands due to the increase of internal pressure during battery charging, and the central rod supports the two ends of the outer shell to protect the battery pack from being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of a mandrel support structure for an internal electrode of a nickel-hydrogen battery according to the present invention;

[0025] Figure 2 for Figure 1 A partial enlarged view of .

[0026] Among them, 1. outer shell; 2. center rod; 3. elastic reset mechanism; 31. shell; 32. guide rod; 33. return spring; 34. guide groove; 4. positive terminal; 5. positive feedthrough; 6. positive bus bar; 7. negative terminal; 8. negative feedthrough; 9. negative bus bar. DETAILED DESCRIPTION

[0027] Example 1

[0028] refer to Figure 1-Figure 2, a mandrel support structure for an internal electrode of a nickel-hydrogen battery, comprising:

[0029] Shell 1;

[0030] A battery pack, which is arranged inside the housing 1;

[0031] A center rod 2 passes through the battery pack, and both ends are fixed to the shell walls at both ends of the shell 1. An elastic reset mechanism 3 is provided between the center rod 2 and the shell 1 to reduce the shaking of the battery pack.

[0032] In a specific implementation, the outer shell 1 expands due to the increase of internal pressure during battery charging, and the central rod 2 supports both ends of the outer shell 1 to protect the battery pack from being damaged.

[0033] In a specific implementation, the first reactant of the present invention is a metal, metal oxide or hydroxide, such as nickel or silver, and is manufactured in the form of a stack of thin substantially circular plates to form electrodes of that material, with adjacent plates not in contact with each other.

[0034] The second reactant is a gas, such as hydrogen, which is under pressure and fills the void inside the container of the housing 1 .

[0035] In this embodiment, the housing 1 is cylindrical, and both ends are hemispherical.

[0036] When implemented, this shape can effectively contain the gas components of the battery pair under high pressure.

[0037] Preferably, the housing 1 is made of chromium-nickel-inconel alloy.

[0038] In this embodiment, it also includes:

[0039] A positive terminal 4, which is disposed on the housing 1, and a positive feedthrough 5 is disposed on the positive terminal 4, and the positive feedthrough 5 is connected to a positive bus bar 6 of the battery pack;

[0040] The negative terminal 7 is arranged on the housing 1 and is arranged diagonally with the positive terminal 4. The negative terminal 7 is provided with a negative feedthrough, which is connected to the negative bus bar 9 of the battery pack.

[0041] In this embodiment, the joint between the positive electrode feedthrough 5 and the positive electrode bus bar 6 of the battery pack, and the joint between the negative electrode feedthrough and the negative electrode bus bar 9 of the battery pack are both flexibly connected.

[0042] The present invention provides a flexible connection so that expansion of the battery during cycling will not cause unnecessary misalignment within the battery pack.

[0043] In this embodiment, the central rod 2 comprises:

[0044] A middle section, which runs through the center of the battery pack;

[0045] Two fixed sections, the first ends of the two fixed sections are respectively connected to the two ends of the middle section, and the second ends are respectively connected to the corresponding elastic reset mechanisms 3.

[0046] In this embodiment, the two fixed sections are connected to the middle section via threads.

[0047] In this embodiment, the elastic reset mechanism 3 includes:

[0048] The shell 31 is fixed to the inner side of the housing 1, and the second end of the fixing section passes through the shell 31 and extends to the inside of the shell 31;

[0049] A guide groove 34, which is fixed on the inner concave surface of the housing 31 and is arranged along the circumference of the housing 1;

[0050] Two guide rods 32, the first ends of the two guide rods 32 are hinged to the second end of the fixed section, the second ends of the guide rods 32 are hinged with guide blocks, and the guide blocks are inserted into the guide grooves 34;

[0051] Two return springs 33 are provided corresponding to the two guide rods 32 , and a first end of the return spring 33 abuts against the guide block, and a second end abuts against the housing 31 .

[0052] In a specific implementation, end plates are respectively provided on both sides of the electrode plate group, wherein the end plates and the central rod 2 are both made of electrically insulating materials.

[0053] In specific implementation, as the housing 1 expands or contracts, the guide block moves accordingly along the guide slot 34, so that the two guide rods 32 move closer to or farther from each other, thereby supporting the battery pack.

[0054] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A mandrel support structure for internal electrodes of a nickel-hydrogen battery, characterized in that: include: shell; A battery pack, the battery pack being arranged inside the housing; A center rod passes through the battery pack, and two ends of the center rod are respectively fixed on the shell walls at two ends of the shell. An elastic reset mechanism is provided between the center rod and the shell to reduce the shaking of the battery pack.

2. The top rod support structure of the internal electrode of the nickel-hydrogen battery according to claim 1, characterized in that: The shell is cylindrical, and both ends are hemispherical.

3. The top rod support structure of the internal electrode of the nickel-hydrogen battery according to claim 1, characterized in that: Also includes: A positive terminal, the positive terminal being disposed on the housing, the positive terminal being provided with a positive feedthrough, the positive feedthrough being connected to a positive bus bar of the battery pack; A negative terminal is disposed on the housing and is arranged diagonally with the positive terminal. A negative electrode feedthrough is disposed on the negative terminal and is connected to a negative electrode bus bar of the battery pack.

4. The top rod support structure of the internal electrode of the nickel-hydrogen battery according to claim 3, characterized in that: The joint of the positive electrode feedthrough and the positive electrode bus bar of the battery pack, and the joint of the negative electrode feedthrough and the negative electrode bus bar of the battery pack are both flexibly connected.

5. The top rod support structure of the internal electrode of the nickel-hydrogen battery according to claim 1, characterized in that: The central rod comprises: a middle section, the middle section running through the center of the battery pack; Two fixing sections, the first ends of the two fixing sections are respectively connected to the two ends of the middle section, and the second ends are respectively connected to the corresponding elastic reset mechanisms.

6. The top rod support structure of the internal electrode of the nickel-hydrogen battery according to claim 5, characterized in that: The two fixing sections are connected to the middle section via threads.

7. The top rod support structure of the internal electrode of the nickel-hydrogen battery according to claim 5, characterized in that: The elastic reset mechanism comprises: A shell body, wherein the shell body is fixed on the inner side of the outer shell, and the second end of the fixing section passes through the shell body and extends to the inside of the shell body; A guide groove, the guide groove is fixed on the inner concave surface of the shell and is arranged along the circumference of the shell; Two guide rods, wherein the first ends of the two guide rods are hinged to the second end of the fixed section, the second ends of the guide rods are hinged with guide blocks, and the guide blocks are inserted into the guide grooves; Two return springs are provided corresponding to the two guide rods, and the first end of the return spring abuts against the guide block, and the second end abuts against the shell.

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