Battery sensing structure, battery sensing system, battery structure, battery module, battery pack and electric equipment

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery sensing structure, which comprises an intelligent sensing structure used for detecting information of an internal structure of a battery, and the intelligent sensing structure comprises a sensing element and a PCB (printed circuit board); the battery shell is provided with an opening, the intelligent sensing structure is arranged on the battery shell, and the sensing element can enter the battery shell through the opening. The battery sensing structure is simple in structure and small in occupied space, the whole battery sensing structure is not in direct contact with electrolyte, the battery sensing structure is in contact with the electrolyte only through the sensing element, the battery sensing structure can be effectively prevented from being corroded, the service life of the battery sensing structure is prolonged, and the working precision of the battery sensing structure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a battery sensing structure, a battery sensing system, a battery structure, a battery module, a battery pack and electrical equipment. Background Art

[0002] In the battery cell manufacturing process, in order to understand the internal electrical properties, thermal properties, and pressure properties, and in order to more clearly, intuitively, and conveniently understand the gas production rate and gas production volume of the battery cell and the degree of change of the shell with pressure, it is necessary to accurately measure the internal parameters of the battery cell. Usually, different types of sensors are installed inside or outside the battery cell to solve the above problems. The current structure of installing sensors on the outside of the battery cell has disadvantages such as complex structure, unreasonable connection between the sensor and the battery, and large space occupation. In the method of installing sensors inside the battery cell, the sensor as a whole is in direct contact with the electrolyte environment, which will greatly affect the service life and working accuracy of the sensor, resulting in the reliability of the detected data cannot be effectively guaranteed. Therefore, it is extremely important to set up a reasonable battery cell sensing structure. Utility Model Content

[0003] The purpose of the utility model is to provide a battery sensing structure, which makes the connection structure between the sensor and the battery cell simpler and occupies less space, effectively prevents the battery sensing structure from being corroded by the electrolyte, improves the service life and working accuracy of the battery sensing structure, and improves the reliability of the detection data.

[0004] To achieve this purpose, the present invention adopts the following technical solution: The present invention provides a battery sensing structure comprising: an intelligent sensing structure, which is used to detect information about the internal structure of the battery, and the intelligent sensing structure comprises a sensing element and a PCB board; a battery casing, the battery casing being provided with an opening, the intelligent sensing structure being mounted on the battery casing, and the sensing element being able to enter the interior of the battery casing through the opening.

[0005] Furthermore, the single cell sensing structure further includes a sensor cap, and the sensor cap is used to encapsulate the intelligent sensing structure on the battery housing.

[0006] Furthermore, the intelligent sensing structure is capable of detecting and / or transmitting and / or processing and / or storing and / or displaying and / or recording and / or controlling information including but not limited to pressure and / or gas composition and / or temperature and / or strain.

[0007] Optionally, the opening of the battery housing is a liquid injection hole.

[0008] Furthermore, the sensing element of the intelligent sensing structure can be in fully sealed contact with the opening of the battery housing.

[0009] Optionally, the sensor cap is fixed to the battery housing by welding.

[0010] Furthermore, the sensor cap is provided with a port reserved therein, and the port is used for connecting the intelligent sensing structure with the outside.

[0011] Optionally, an insulating protective sleeve is further provided between the intelligent sensing structure and the battery housing, and the insulating protective sleeve has insulating and buffering functions.

[0012] Optionally, the insulating protective cover may wrap the PCB board and leave an opening for the sensing element to pass through.

[0013] According to one aspect of an embodiment of the present application, a battery sensing system is provided, comprising the above structure and a signal receiving device.

[0014] A battery structure according to an embodiment of the present application includes the above-mentioned structure and a signal receiving device.

[0015] A battery module according to an embodiment of the present application includes the above-mentioned battery structure.

[0016] A battery pack according to an embodiment of the present application includes the above-mentioned battery module.

[0017] An electrical device according to an embodiment of the present application, such as a car, a digital product, etc., includes the above-mentioned battery pack.

[0018] The utility model designs the above battery sensing structure to make the connection structure between the sensor and the battery cell simpler and occupy less space. Direct contact with the battery cell is achieved only through the sensing element, which effectively avoids the battery sensing structure from being corroded by the electrolyte, thereby increasing the service life and working accuracy of the battery sensing structure and improving the reliability of the detection data. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following drawings of the embodiments of the present invention are used as part of the present invention for understanding the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principle of the present invention.

[0020] Figure 1a It is a schematic diagram of the battery sensing structure;

[0021] Figure 1b It is a schematic diagram of the battery sensing structure;

[0022] Figure 2 It is a schematic diagram of the intelligent sensing structure;

[0023] Figure 3 This is a signal reception diagram.

[0024] In the picture:

[0025] 1. Intelligent sensing structure; 2. Battery housing; 4. Sensor cap; 11. PCB board; 121. Gas transmission pipeline; 122. Sensor; 13. Insulation protection structure. DETAILED DESCRIPTION

[0026] In the following description, a large number of specific details are given in order to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the embodiments of the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the embodiments of the present invention, some technical features well known in the art are not described. The present invention is further described in detail below in conjunction with the accompanying drawings and examples. It will be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0027] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] like Figure 1a As shown, the single cell sensing structure includes an intelligent sensing structure 1, which is used to detect information about the internal structure of the battery and can transmit and / or process and / or store and / or display and / or record and / or control the information. The intelligent sensing structure 1 also includes a sensing element and a PCB board 11; a battery casing 2, which is used to fix and seal the internal electrochemical system. The battery casing 2 is provided with an opening, and the intelligent sensing structure 1 is mounted on the battery casing 2, and the sensing element 12 of the intelligent sensing structure 1 can enter the interior of the battery through the opening.

[0029] Optionally, a sensor cap 4 is provided, and the sensor cap 4 is used to encapsulate the intelligent sensing structure 1 on the battery housing 2 .

[0030] Optionally, the smart sensing structure 1 is capable of detecting and / or transmitting and / or processing and / or storing and / or displaying and / or recording and / or controlling information including but not limited to pressure and / or gas composition and / or temperature and / or strain.

[0031] Optionally, the opening of the battery housing 2 is a liquid injection hole, or may be other openings that penetrate one side of the battery housing 2 , and the shape of the opening is not limited.

[0032] In this embodiment, if Figure 2 As shown, the intelligent sensing structure 1 is used to detect gas composition, and its sensing element is composed of a gas transmission pipe 121 and a sensor 122. The opening of the battery shell 2 is a liquid injection hole, and the diameter of the gas transmission pipe 121 is consistent with the diameter of the liquid injection hole, which can achieve mortise and tenon connection with the liquid injection hole and preliminary sealing, so that the gas sensor measuring point and the inside of the battery are in the same closed system. The combined intelligent sensing structure 1 is almost fitted with the battery shell 2, and the gas transmission pipe 121 is embedded in the battery through the liquid injection hole. The gas inside the battery is connected to the sensor 122 through the gas transmission pipe 121 to collect real data inside the battery. After the sensor 122 collects the data, the signal transmission is completed through the signal conditioning transmission chip inside the PCB board 11, so as to achieve the function of detecting the internal parameters of the battery and transmitting the detection signal.

[0033] Furthermore, if Figure 2 As shown, an insulating protective cover 13 is further provided between the smart sensing structure 1 and the battery housing 2. The insulating protective cover 13 has a buffering and insulating function, thereby preventing the electronic components in the battery smart sensing structure 1 from being directly connected to the inside of the battery and causing damage by a short circuit, and protecting the electronic components in the battery smart sensing structure 1 from colliding with the outer wall.

[0034] Optionally, the insulating protective cover 13 may wrap the PCB board 11 and leave an opening for the sensing element to pass through.

[0035] Optionally, the insulating protective cover 13 is not limited to being bonded and / or welded and / or mechanically fixed to the battery housing 3 and / or the sensor cap 4 .

[0036] Alternatively, as Figure 3 As shown, the battery sensing structure also includes a signal receiving device, which can be set to wireless receiving or wired receiving mode. When set to wired receiving mode, the sensor cap 4 needs to have a port reserved to connect the intelligent sensing structure 1 to the external signal receiving device through the port.

[0037] Optionally, the sensor cap 4 and the battery housing 2 may be fixed by welding, or may be connected and fixed by bonding and / or mechanical fixing to achieve a completely sealed effect on the internal space of the battery.

[0038] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A battery sensing structure, characterized in that: The battery sensing structure includes: an intelligent sensing structure, which is used to detect information about the internal structure of the battery, and the intelligent sensing structure includes a sensing element and a PCB board; A battery housing, wherein the battery housing is provided with an opening, the intelligent sensing structure is mounted on the battery housing, and the sensing element extends into the interior of the battery housing through the opening; A sensor cap, which is used to encapsulate the intelligent sensing structure on the battery housing. The sensing element of the intelligent sensing structure is in full sealing contact with the opening of the battery housing, and the sensor cap is fixed to the battery housing by welding. An insulating protective sleeve is further provided between the intelligent sensing structure and the battery housing, and the insulating protective sleeve has insulating and buffering functions.

2. The battery sensing structure according to claim 1, characterized in that: The opening of the battery shell is a liquid injection hole.

3. The battery sensing structure according to claim 1, characterized in that: The sensor cap is provided with a port, which is used for connecting the intelligent sensing structure with the outside.

4. A battery sensing system, characterized in that: The battery sensing structure comprises the battery sensing structure according to any one of claims 1 to 3.

5. A battery structure comprising the battery sensing structure according to any one of claims 1 to 3 or the battery sensing system according to claim 4.

6. A battery module comprising the battery structure according to claim 5.

7. A battery pack comprising the battery module according to claim 6.

8. An electrical device comprising the battery pack according to claim 7.

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