Battery shell with intelligent sensor and secondary battery

Abstract

The utility model discloses a battery shell with an intelligent sensor and a secondary battery, the battery shell comprises a shell, any side surface or bottom surface of the shell is provided with a mounting hole, and one side of the mounting hole facing the inside or the outside of the battery is provided with a mounting step surface; the intelligent sensor comprises a circuit board and double sensors mounted on the circuit board, the double sensors are used for detecting the temperature and pressure in the battery, and the circuit board is fixedly connected to the mounting step surface. According to the battery shell with the intelligent sensor and the secondary battery provided by the embodiment of the invention, the mounting step surface is arranged on the mounting hole of the shell, so that the intelligent sensor can be fixed on the shell, and the accuracy and the real-time performance of receiving a signal from the bottom of the battery are improved.

Description

Technical Field

[0001] This application belongs to the technical field of secondary batteries, and particularly relates to a battery case with an intelligent sensor and a secondary battery. Background Art

[0002] Chinese Patent Invention Publication No. CN114050360A discloses a secondary battery top cover with dual sensors and its assembly method. By welding the dual sensors on the outside of the battery top cover, effective monitoring of the internal state of the battery is achieved. However, this design method has several limitations. Specifically, since the dual sensors are directly welded to the battery cover plate, their positions are relatively far from the bottom of the battery, which directly leads to a significant extension of the signal path when the dual sensors receive signals from the bottom of the battery. The delay in signal propagation not only increases the response time of data acquisition but also may affect the accuracy and real-time nature of the data due to signal attenuation, thereby having an adverse impact on the precise monitoring and management of the battery state. Summary of the Utility Model

[0003] In view of this, this application provides a battery case with an intelligent sensor and a secondary battery, and solves the above technical problems by setting the welding position on the case.

[0004] To achieve the above application objectives, the technical solutions adopted in this application are as follows:

[0005] An embodiment of this application provides a battery case with an intelligent sensor, including:

[0006] A case, an installation hole is provided on any side surface or bottom surface of the case, and an installation step surface is provided on the side of the installation hole facing the inside or outside of the battery;

[0007] An intelligent sensor, the intelligent sensor includes a circuit board and a dual sensor installed on the circuit board, the dual sensor is used to detect the temperature and pressure inside the battery, and the circuit board is fixedly connected to the installation step surface.

[0008] In some embodiments, the intelligent sensor further includes:

[0009] A packaging structure, the interior of the packaging structure has a cavity for installing the dual sensor, one end of the cavity is the circuit board, the other end of the cavity is a diaphragm, and the cavity is filled with a pressure transmission medium. For example, the pressure transmission medium is silicone oil.

[0010] In some embodiments, the intelligent sensor further includes:

[0011] A digital signal processing chip, the digital signal processing chip is connected to the dual sensor and is located inside the cavity;

[0012] A connecting piece, one end of the connecting piece is connected to a digital signal processing chip, and the other end passes through a circuit board.

[0013] In some embodiments, a connector or a wireless communication module is connected to the other end of the connecting piece.

[0014] In some embodiments, the mounting hole is provided at the center position of any side surface or the center position of the bottom surface of the housing.

[0015] In some embodiments, the circuit board and the mounting step surface are sealed by laser welding, gluing, ultrasonic welding, or electric current welding.

[0016] The embodiment of the present application also provides a secondary battery, including a top cover assembly and a battery housing with a smart sensor provided in any of the above embodiments.

[0017] In some embodiments, the secondary battery is a lithium-ion battery.

[0018] Compared with the prior art, the beneficial effects of the embodiment of the present application are:

[0019] The battery housing with a smart sensor and the secondary battery provided by the embodiment of the present application, by providing a mounting step surface on the mounting hole of the housing, enable the smart sensor to be fixed on the housing, thereby improving the accuracy and real-time performance of receiving signals from the bottom of the battery. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 Shows a schematic structural diagram of a secondary battery with a smart sensor provided by an embodiment of the present application;

[0022] Figure 2 Shows a bottom view schematic diagram of a secondary battery with a smart sensor provided by an embodiment of the present application;

[0023] Figure 3 Shows a schematic diagram of the smart sensor provided by an embodiment of the present application;

[0024] Figure 4 Shows another schematic diagram of the smart sensor provided by an embodiment of the present application;

[0025] Figure 5 Shows a cross-sectional view of a secondary battery with a smart sensor provided by an embodiment of the present application;

[0026] Figure 6 shows Figure 5 an enlarged schematic view of the welding position of the intelligent sensor in

[0027] Figure 7 shows Figure 5 an enlarged schematic view of the rendered welding position of the intelligent sensor in

[0028] Illustration:

[0029] 11. Top cover assembly; 12. Housing; 121. Bottom surface; 1211. Mounting hole; 1212. Mounting step surface; 13. Intelligent sensor; 131. Circuit board; 132. Encapsulation structure; 133. Dual sensor; 134. Connecting piece. Detailed implementation manners

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0031] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0033] The embodiment of the present application provides a battery housing with an intelligent sensor and a secondary battery. The secondary battery includes a battery housing with an intelligent sensor and a top cover assembly. The battery housing includes a housing and an intelligent sensor. An installation hole is provided on any side surface or the bottom surface of the housing, and an installation step surface is provided on one side of the installation hole facing the inside or outside of the battery. The intelligent sensor includes a circuit board and a dual sensor mounted on the circuit board. The dual sensor is used to detect the temperature and pressure inside the battery, and the circuit board is used to be fixedly connected to the installation step surface.

[0034] Optionally, the installation hole is provided at the central position of any side surface of the housing or the central position of the bottom surface. Optionally, the housing has four side surfaces and one bottom surface.

[0035] In the above battery case with an intelligent sensor and the secondary battery, by providing an installation step surface on the installation hole of the case, the intelligent sensor can be fixed to the case, thereby improving the accuracy and real-time performance of receiving signals from the bottom of the battery.

[0036] To illustrate the technical solution described in this application, specific embodiments will be described below.

[0037] Please refer to Figures 1 to 7 As shown, in some embodiments, the secondary battery includes a battery case with an intelligent sensor and a top cover assembly 11. The battery case includes a case 12 and an intelligent sensor 13. An installation hole 1211 is formed on the bottom surface 121 of the case 12, and an installation step surface 1212 is provided on one side of the installation hole 1211 facing the inside of the battery. The intelligent sensor 13 includes a circuit board 131 and a dual sensor 133 mounted on the circuit board 131. The dual sensor 133 is used to detect the temperature and pressure inside the battery, and the circuit board 131 is used to be fixedly connected to the installation step surface 1212. This setting can make the dual sensor 133 located inside the bottom surface 121 of the case 12. Optionally, the circuit board 131 and the installation step surface 1212 are sealed by laser welding, gluing, ultrasonic welding, or electric current welding.

[0038] In some embodiments, a packaging structure 132 is provided around the dual sensor 133. Specifically, the intelligent sensor further includes: a packaging structure 132, which has a cavity for installing the dual sensor 133 inside. One end of the cavity is the circuit board 131, the other end of the cavity is a diaphragm, and the cavity is filled with silicone oil.

[0039] In some embodiments, the intelligent sensor further includes: a digital signal processing chip, which is connected to the dual sensor 133 and is located inside the cavity; a connecting member 134, one end of the connecting member 134 is connected to the digital signal processing chip, and the other end passes through the circuit board 131.

[0040] Optionally, the other end of the connecting member 134 is connected to a connector or a wireless communication module. For example, the connector is a USB connector; for example, the wireless communication module is a Bluetooth module. Optionally, the connecting member 134 includes an antenna.

[0041] For example, the digital signal processing chip is used to convert the analog signal detected by the dual sensor 133 into a digital signal, and the wireless communication module or the connector is used to transmit the digital signal externally, so as to realize the external transmission of the temperature and pressure data inside the battery.

[0042] In some embodiments, the installation hole 1211 is provided at the central position of the bottom surface 121 of the case 12.

[0043] In some embodiments, the housing 12 is a housing resistant to electrolytes such as an aluminum housing or a stainless steel housing.

[0044] The above-described embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application and should all be included within the protection scope of the present application.

Claims

1. A battery housing with a smart sensor, characterized in that, Comprising: A housing, an installation hole is provided on any side surface or the bottom surface of the housing, and an installation step surface is provided on one side of the installation hole facing the inside or outside of the battery. An intelligent sensor, the intelligent sensor includes a circuit board and a dual sensor mounted on the circuit board, the dual sensor is used to detect the temperature and pressure inside the battery, and the circuit board is fixedly connected to the installation step surface.

2. The battery housing with an intelligent sensor according to claim 1, characterized in that, The intelligent sensor further includes: A packaging structure, the interior of the packaging structure has a cavity for installing the dual sensor, one end of the cavity is the circuit board, the other end of the cavity is a diaphragm, and the cavity is filled with a pressure transmission medium.

3. The battery housing with an intelligent sensor according to claim 2, characterized in that, The intelligent sensor further includes: A digital signal processing chip, the digital signal processing chip is connected to the dual sensor and is located inside the cavity. A connecting member, one end of the connecting member is connected to the digital signal processing chip, and the other end passes through the circuit board.

4. The battery housing with an intelligent sensor according to claim 3, characterized in that, The other end of the connecting member is connected to a connector or a wireless communication module.

5. The battery housing with an intelligent sensor according to claim 1, characterized in that, The installation hole is provided at the central position of any side surface or the bottom surface of the housing.

6. The battery housing with an intelligent sensor according to claim 1, characterized in that, The circuit board and the installation step surface are sealed by laser welding, gluing, ultrasonic welding, or electric current welding.

7. A secondary battery, characterized in that, Including a top cover assembly and a battery housing with an intelligent sensor according to any one of claims 1 to 6.

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