Current collecting element for high-voltage thermal battery
By using current collectors made of stainless steel and nickel, the reliability and conductivity issues of current collectors under high temperature and high pressure conditions were solved, enabling reliable connection and high power output of high-voltage thermal batteries.
Patent Information
- Application Number
- CN202422888054.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-11-26
AI Technical Summary
Existing current collectors for thermal batteries are prone to breakage, oxidation, peeling, and detachment under high temperature and high pressure environments. Furthermore, stainless steel materials have poor conductivity and are not suitable for high-power output.
The current collector and leads, made of stainless steel and nickel, are connected by energy storage welding or ultrasonic welding to form a current collector element for high-voltage thermal batteries.
It improves connection reliability, reduces resistance, and enhances durability and high-power output capability under high temperature and high pressure environments.
Smart Images
Figure CN223501887U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a current collector for a high-voltage thermal battery, belonging to the field of high-voltage thermal battery reliability design. Background Technology
[0002] Thermal batteries, as chemical power sources with long storage time, wide operating temperature range, and strong resistance to mechanical environments, have been widely used in modern weapon systems. With the development of intelligent and agile weaponry, thermal batteries are gradually evolving towards technologies such as modularization, high power, high voltage, and long lifespan. High-voltage thermal batteries operate in harsh environments where the internal temperature remains between 400℃ and 500℃ and the voltage remains around 100 volts for extended periods. They also need to withstand various severe mechanical environments from weapon systems, including overload impacts, vibrations, and centrifugal accelerations. Therefore, higher requirements are placed on the transmission performance, temperature resistance, and mechanical resistance of the components within high-voltage thermal batteries.
[0003] As a crucial component of the electrical performance output of a thermal battery, the reliability and robustness of its connection are essential for the reliable operation of the battery. Currently known current collectors used in thermal batteries are made of materials such as nickel, copper, and stainless steel. Nickel and copper are the most widely used, but both are prone to breakage, oxidation, peeling, and detachment when transmitting current for extended periods in high-temperature environments, compromising the output reliability of the thermal battery during operation. While stainless steel current collectors can achieve reliable connections, their poor conductivity makes them unsuitable for high-power output thermal batteries. Utility Model Content
[0004] This utility model addresses the technical problems existing in the prior art by providing a current collector structure that is simple to operate, has high connection reliability, and is suitable for high-current output of high-voltage thermal batteries.
[0005] This utility model is achieved through the following technical solution:
[0006] A current collector element for a high-voltage thermal battery includes a current collector plate, stainless steel leads, and nickel leads, which are connected and fixed by energy storage welding or ultrasonic welding. The current collector plate is made of stainless steel or nickel.
[0007] The current collector is made of stainless steel or nickel material and has a thickness of 0.05mm to 0.12mm.
[0008] The stainless steel lead wire is cut from stainless steel material and has a thickness of 0.10mm to 0.12mm.
[0009] The nickel leads are cut from nickel material and have a thickness of 0.10 mm to 0.12 mm.
[0010] The advantages and positive effects of the current collector structure for high-voltage thermal batteries described in this utility model are as follows:
[0011] 1. The current collector used in this current collector element has a simple processing technology and is highly operable, using current collector plates, stainless steel leads, and nickel leads.
[0012] 2. The material used for the current collector of this current collector element is thin, which directly and effectively reduces the resistance of the thermal battery output circuit;
[0013] 3. The stainless steel leads of this current collector have strong temperature resistance, which effectively improves the connection reliability of the thermal battery in high temperature and high pressure working environment and mechanical environment.
[0014] 4. The nickel leads of this current collector have good conductivity, which makes up for the poor conductivity of stainless steel leads and improves the high power output capability of the thermal battery. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the current collector structure for the high-voltage thermal battery of this utility model;
[0016] Figure 2 yes Figure 1 Top view. Detailed Implementation
[0017] like Figure 1 As shown, this utility model discloses a current collector for a high-voltage thermal battery, which consists of a current collector plate 1, a stainless steel lead wire 2, and a nickel lead wire 3.
[0018] The current collector 1 is made of stainless steel or nickel material and has a thickness of 0.05mm to 0.12mm.
[0019] The stainless steel lead wire 2 is cut from stainless steel material with a thickness of 0.10mm to 0.12mm.
[0020] Nickel lead 3 is cut from nickel material and has a thickness of 0.10mm to 0.12mm.
[0021] The current collector 1, stainless steel lead 2, and nickel lead 3 are connected and fixed by means of energy storage welding or ultrasonic welding.
[0022] Example:
[0023] Reference Figure 1 The current collector uses a φ74mm diameter nickel stamped current collector (0.1mm thick nickel material), an 8mm×220mm nickel lead wire (0.1mm thick), and an 8mm×220mm stainless steel lead wire (0.1mm thick). Figure 1The requirements were to use energy storage welding to connect and fix the three components, and to prepare two such current collectors. These were to be used as the positive and negative output terminals of a high-voltage thermal battery stack of 80V to 98V. The electrical performance tests were conducted according to the technical requirements shown in Table 1, including high and low temperature tests, launch shock tests, and flight vibration tests. The data such as working time, maximum voltage, and activation time were recorded. All data met the requirements of the specifications and the weapon system. After dissection, the connection points of the two current collectors were examined and found to be intact and reliably connected.
[0024] Table 1. Test results of the electrical performance of the thermal battery
[0025]
Claims
1. A current collector element for a high-voltage thermal battery, comprising current collector plates, stainless steel leads, and nickel leads, characterized in that: The three components are connected and fixed by energy storage welding or ultrasonic welding, and the current collector is made of stainless steel or nickel.
2. The current collector for a high-voltage thermal battery according to claim 1, characterized in that: The current collector is made of stainless steel or nickel material and has a thickness of 0.05mm to 0.12mm.
3. The current collector for a high-voltage thermal battery according to claim 1, characterized in that: The stainless steel lead wire is cut from stainless steel material and has a thickness of 0.10mm to 0.12mm.
4. A current collector for a high-voltage thermal battery according to claim 1, characterized in that: The nickel leads are cut from nickel material and have a thickness of 0.10 mm to 0.12 mm.