Temperature and pressure collector, top cover assembly, single battery, battery and power utilization device

Abstract

The utility model provides a temperature and pressure gatherer, top cover subassembly, monomer battery, battery and electric device wherein temperature and pressure gatherer includes package seat, gland, circuit board, elastic membrane, temperature and pressure sensor subassembly, the package seat is equipped with the fixed connection portion, the interior is equipped with the accommodation channel that includes first channel and second channel, the section size of the first channel is larger than that of the second channel, the gland covers the open end of the first channel, a fixedly-connected part is arranged on the gland, the circuit board is far away from the fixedly-connected part and the fixedly-connected part, the circumferential edge of the circuit board is connected to the bottom of the first channel in a sealed mode, and the elastic membrane is used for conducting pressure and temperature. The elastic membrane is arranged at the opening end of the second channel in a sealed mode, the second channel is filled with silicone oil, the temperature and pressure sensor assembly is arranged on the circuit board and located in the silicone oil, and the temperature and pressure sensor assembly comprises a temperature sensor and a pressure sensor. When the temperature and pressure collector is fixed on the top cover of the battery, heat generated by welding can be prevented from being directly conducted to the circuit board.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a temperature and pressure collector, a top cover assembly, a single cell, a battery and an electrical device. Background Art

[0002] Battery temperature and pressure testing is an indispensable part of the battery production and use process. It can help discover safety hazards inside the battery, such as battery overheating, excessive internal pressure of the battery, etc. It can also detect the battery usage status, such as battery saturation, battery charging and discharging conditions, etc.

[0003] The temperature and pressure collector in the existing battery generally includes an aluminum-based circuit board, a temperature sensor, a pressure sensor, and a packaging structure. The temperature sensor and the pressure sensor are both installed on the aluminum-based circuit board. During installation, the aluminum-based circuit board is welded to the top cover of the battery to fix the packaging structure on the top cover of the battery.

[0004] However, during the welding process, the high temperature heat generated during the welding process will be directly transferred to the aluminum-based circuit board, which may cause the temperature sensor and pressure temperature sensor on the aluminum-based circuit board to be heated, resulting in inaccurate measurement results or even direct damage. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a temperature and pressure collector, a top cover assembly, a single cell, a battery and an electrical device. When the temperature and pressure collector is fixed to the top cover of the battery, the heat generated by welding can be prevented from being directly conducted to the circuit board.

[0006] In the first aspect, the utility model provides a temperature and pressure collector, including: a packaging seat, a pressure cover, a circuit board, an elastic diaphragm, and a temperature and pressure sensor assembly. The packaging seat is provided with a fixing portion, and a through accommodating channel is provided inside the packaging seat. The accommodating channel includes a first channel and a second channel. The cross-sectional size of the first channel is larger than the cross-sectional size of the second channel. The pressure cover is covered on the open end of the first channel, and a fixed portion cooperating with the fixing portion is provided on the pressure cover. The circumferential edge of the circuit board is sealed and connected to the bottom of the first channel, and the circuit board is away from the fixing portion and the fixed portion. The elastic diaphragm is used to conduct pressure and temperature. The elastic diaphragm is sealed at the open end of the second channel, and the second channel is filled with silicone oil. The temperature and pressure sensor assembly is arranged on the circuit board and is located in the silicone oil, which includes a temperature sensor and a pressure sensor for measuring temperature and pressure, respectively.

[0007] The utility model has the following beneficial effects: by sealingly connecting the circuit board to the bottom of the first channel, the accommodating channel can be divided into a first channel and a second channel which are independent of each other; the second channel is filled with silicone oil and the temperature and pressure sensor assembly is placed in the silicone oil; the temperature and pressure generated inside the battery are conducted by the silicone oil, and it can be prevented from being directly exposed to the harsh detection environment inside the battery for measurement; at the same time, since the circuit board is far away from the fixing part and the fixed part, when the fixing part and the fixed part are welded by welding, the heat generated by the welding will not be directly conducted to the circuit board, thereby not causing inaccurate measurements of the temperature and pressure sensors and the pressure sensors, or not causing them to be unable to measure temperature and pressure due to direct damage; in addition, the temperature and pressure collector can be firmly installed on the battery top cover by a pressure cover, and compared with the traditional method of directly welding the aluminum-based circuit board to the battery top cover, the structure is more stable.

[0008] In addition, the temperature and pressure collector according to the utility model may also have the following additional technical features:

[0009] Furthermore, a sealing ring is provided between the circuit board and the pressure cover, and the sealing ring is pressed against the circumferential edge of the circuit board under the action of the pressure cover. A groove is provided on the part of the pressure cover away from the sealing ring, and the side of the packaging seat facing the pressure cover is inserted into the groove.

[0010] Furthermore, PIN pins are sealed and penetrated on the circuit board, and the temperature sensor and the pressure sensor are electrically connected to the corresponding PIN pins.

[0011] Furthermore, the temperature and pressure sensor assembly also includes a digital signal processor, which is electrically connected to the temperature and pressure sensor and the pressure sensor. A PIN pin is sealed and pierced on the circuit board, and the digital signal processor is electrically connected to the PIN pin.

[0012] Furthermore, an oil filling port is provided on the circuit board, and a sealing member for sealing the oil filling port is also provided on the circuit board.

[0013] Furthermore, the middle part of the gland is hollowed out.

[0014] On the second aspect, based on the same inventive concept, the utility model also provides a top cover assembly, including a top cover and the aforementioned temperature and pressure collector, a welding part is provided on the top cover, a welded part matching with the welding part is provided on the pressure cover, and the circuit board is away from the welding part and the welded part.

[0015] Since the circuit board is far away from the welding part and the welded part, when the welding part and the welded part are welded, that is, when the pressure cover and the top cover are welded together, the heat generated by the welding will not be directly transmitted to the circuit board, thereby not causing inaccurate measurements of the temperature and pressure sensors and the pressure sensors, or causing direct damage to the temperature and pressure sensors and making it impossible to measure temperature and pressure.

[0016] In a third aspect, based on the same inventive concept, the utility model also provides a single cell battery, including a battery body and the aforementioned top cover assembly, wherein the battery body has an opening, and the top cover assembly is sealed and covered on the opening of the battery body.

[0017] In a fourth aspect, based on the same inventive concept, the utility model also provides a battery, including a battery box and the aforementioned single battery, wherein the single battery is accommodated in the battery box.

[0018] In a fifth aspect, based on the same inventive concept, the utility model also provides an electrical device, including the aforementioned battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the temperature and pressure collector in the utility model from the first perspective;

[0020] Figure 2 It is a structural schematic diagram of the temperature and pressure collector in the utility model from a second viewing angle;

[0021] Figure 3 It is a cutaway stereogram of the temperature and pressure collector in the utility model;

[0022] Figure 4 It is a cross-sectional view of the temperature and pressure collector in the utility model;

[0023] Figure 5 It is a schematic diagram of the structure of a single battery in the utility model;

[0024] Description of main component symbols:

[0025] Package seat 100 Accommodation channel 110 First Channel 111 Second channel 112 Silicone oil 120 Gland 200 Grooves 210 Sealing ring 220 Welded part 230 Circuit Board 300 PIN 310 Gold Thread 320 Oil filling port 330 Blocking parts 340 Elastic diaphragm 400 Metal ring 410 Elastic film 420 Temperature and pressure sensor components 500 Top cover 700 Battery body 800

[0026] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0030] When the temperature and pressure collector is fixedly installed on the top cover of the battery, in order to avoid the heat generated by welding directly affecting the temperature sensor and pressure sensor on the circuit board, resulting in inaccurate measurement or even direct damage and inability to measure temperature and pressure, the present application provides a temperature and pressure collector.

[0031] Specifically, see Figures 1 to 4 , a temperature and pressure collector provided in the present application, including: a packaging seat 100, a pressure cover 200, a circuit board 300, an elastic diaphragm 400, and a temperature and pressure sensor assembly 500. The outer shape of the packaging seat 100 can be cylindrical, square, etc., and the cylindrical shape in the accompanying drawings is only an exemplary illustration. A fixing portion is provided on the top of the packaging seat 100, and a accommodating channel 110 is provided inside the packaging seat 100, which is connected from top to bottom. The accommodating channel 110 includes a first channel 111 at the top and a second channel 112 at the bottom. The cross-sectional size of the first channel 111 is larger than the cross-sectional size of the second channel 112. The edge of the circuit board 300 is sealed and connected to the bottom of the first channel 111, and the elastic diaphragm 400 is welded to the bottom of the second channel 112. The second channel 112 is filled with silicone oil. It can be understood that the cross-sectional shape of the first channel 111 and the second channel 112 can be circular, square, elliptical, etc. The lower surface of the pressure cover 200 is provided with a fixed portion. By fixing the fixing portion on the packaging seat 100 and the fixed portion on the pressure cover 200 together, the pressure cover 200 can be stably covered on the opening at the upper end of the packaging seat 100.

[0032] The circuit board 300 is installed inside the accommodating channel 110. Specifically, the circuit board 300 is sealed and connected to the inner wall of the accommodating channel 110. At this time, the circuit board 300 divides the accommodating channel 110 into an upper first channel 111 and a lower second channel 112, and at this time, the circuit board 300 is away from the fixing portion on the package base 100 and the fixed portion on the gland 200. Optionally, the circuit board 300 can be made of ceramic board, FR4 board, copper board, aluminum board and other types of board.

[0033] The elastic diaphragm 400 is used to conduct pressure and temperature. Specifically, the elastic diaphragm 400 is sealed at the opening of the lower end of the packaging seat 100, and the second channel 112 is filled with silicone oil 120. Optionally, the elastic diaphragm 400 includes a metal ring 410 and an elastic film 420. During assembly, the elastic film 420 is crimped to the hollow part of the inner ring of the metal ring 410, and then the outer ring part of the metal ring 410 is welded to the packaging seat 100. The temperature and pressure sensor assembly 500 is arranged on the lower surface of the circuit board 300. The temperature and pressure sensor assembly 500 includes a temperature sensor and a pressure sensor for measuring temperature and pressure respectively. During specific assembly, the temperature and pressure sensor assembly 500 can be welded to the circuit board 300 by using a surface mounting process. Since the temperature and pressure sensor assembly 500 is immersed in silicone oil, in order to protect the electrical interface of the temperature and pressure sensor assembly 500 from direct contact with the silicone oil 120, the electrical interface of the temperature and pressure sensor assembly 500 can be sealed with a sealant.

[0034] In this embodiment, during measurement, the elastic diaphragm 400 is deformed by the pressure inside the battery, and then the pressure parameter is transmitted to the temperature and pressure sensor assembly 500 through the silicone oil 120, and the temperature and pressure sensor assembly 500 then outputs an electrical signal containing temperature information; similarly, the elastic diaphragm 400 transmits the external temperature parameter to the silicone oil 120, and the silicone oil 120 transmits the temperature parameter to the temperature and pressure sensor assembly 500, and the temperature and pressure sensor assembly 500 then outputs an electrical signal containing pressure information. In addition, compared with the prior art, the present embodiment provides a pressure cover 200 on the packaging seat 100. When the fixing part on the packaging seat 100 and the fixed part on the pressure cover 200 are welded together by welding, the heat generated by the welding is far away from the side of the temperature and pressure sensor assembly 500, and the heat has less influence on the temperature and pressure sensor assembly 500 on the circuit board 300. At the same time, the circuit board 300 can be made of ordinary materials such as FR4 board, and there is no need to use an aluminum-based circuit board with a more difficult manufacturing process as in the prior art. Moreover, when installing the temperature and pressure collector of the present application, it is only necessary to weld the pressure cover 200 to the battery cover, so the structural strength provided is also higher than that of the aluminum-based circuit board.

[0035] In some optional embodiments, such as Figure 3As shown, a groove 210 is provided on the lower surface of the gland 200 as a fixed portion, and the edge of the top of the packaging seat 100 is used as a fixed portion. Before welding, the edge of the top of the packaging seat 100 is inserted into the groove 210, so that the gland 200 can be limited on the packaging seat 100, and then the two are welded together at the groove 210. In addition, in order to achieve a sealed connection between the edge of the circuit board 300 and the bottom of the first channel 111, the silicone oil 120 is prevented from flowing into the first channel 111 from the gap. Further, a sealing ring 220 is provided between the edge of the upper surface of the circuit board 300 and the lower surface of the gland 200, and the sealing ring 220 can be a rubber sealing ring. At this time, after the gland 200 is welded to the packaging seat 100, the sealing ring 220 is tightly pressed against the circumferential edge of the circuit board 300 under the extrusion of the gland 200, so that the circumferential edge of the lower surface of the circuit board 300 can be tightly fitted on the bottom of the first channel 111. In some extreme cases, the silicone oil 120 leaks out from the contact surface between the circuit board 300 and the bottom of the first channel 111. The sealing ring 220 can prevent the silicone oil from leaking out further. In this embodiment, the middle of the gland 200 can be hollowed out to facilitate replacement of the sealing ring 220.

[0036] In order to extract the pressure measurement signal and the temperature measurement signal, in some optional embodiments, such as Figure 1 , 3 As shown, a PIN pin 310 is also sealed and penetrated on the circuit board 300, and the temperature sensor in the temperature and pressure sensor assembly 500 is electrically connected to the corresponding PIN pin 310, and the pressure sensor in the temperature and pressure sensor assembly 500 is electrically connected to the corresponding PIN pin 310. Specifically, the temperature sensor and the pressure sensor can be electrically connected to the corresponding PIN pin 310 by using a gold wire 320. Exemplarily, four PIN pins 310 are fixed through the circuit board 300, wherein the two electrical interfaces of the temperature sensor are electrically connected to the corresponding two PIN pins 310 through the gold wire 320 to transmit the pressure measurement signal; the two electrical interfaces of the pressure sensor are electrically connected to the remaining two PIN pins 310 through the gold wire 320 to transmit the temperature measurement signal. It should be noted that the number of PIN pins 310 in this embodiment is only an exemplary description, and corresponding changes are generated according to the different models of the temperature sensor and pressure sensor used; in addition, the temperature sensor and the pressure sensor can be independent chips or integrated chips. In this embodiment, the PIN pin 310 is preferably sealed and connected to the circuit board 300 by ceramic welding technology.

[0037] In some optional embodiments, the temperature and pressure sensor assembly 500 also includes a digital signal processor, which is electrically connected to the temperature sensor and the pressure sensor, and converts the electrical signals output by the temperature sensor and the pressure sensor into digital signals to facilitate transmission to the digital terminal device for analysis and processing, or converts the digital signals into digital signals for corresponding analysis and processing, and then transmits the signals obtained after analysis to the digital terminal device. In this embodiment, preferably, the digital signal processor, the temperature sensor, and the pressure sensor are integrated on a single chip. In this embodiment, preferably, the PIN pin 310 is sealed and connected to the circuit board 300 by ceramic welding technology.

[0038] In some optional embodiments, such as Figure 1 , 3 As shown in FIG. 4 , the circuit board 300 is provided with an oil filling port 330, and the circuit board 300 is also provided with a plugging member 340 for sealing the oil filling port 330. For example, the plugging member 340 can be sealed with a steel ball, that is, after the second channel 112 is filled with silicone oil 120, the steel ball is welded to the circuit board 300.

[0039] In some optional embodiments, such as Figure 1 , 3 As shown in Figures 4 and 5, the middle part of the gland 200 is hollowed out, and the sealing ring 220 is clamped between the edge of the hollow part of the gland 200 and the circumferential edge of the circuit board 300. This makes it convenient to fill the silicone oil 120 from the hollow part of the gland 200 into the oil filling port 330. After the silicone oil 120 is filled, it is convenient to weld the sealing member 340 to the circuit board 300. In addition, it is also convenient to replace a damaged or failed sealing ring 220.

[0040] In addition, based on the same inventive concept, the utility model also provides a top cover assembly, such as Figure 2 , 5 As shown, the top cover assembly includes a top cover 700 and the aforementioned temperature and pressure collector, a welding portion (not shown in the drawings) is provided on the top cover 700, a welded portion 230 cooperating with the welding portion is provided on the pressure cover 200, and the circuit board 300 is far away from the welding portion and the welded portion 230. In this embodiment, since the circuit board 300 is far away from the welding portion and the welded portion 230, when the pressure cover 200 and the top cover 700 are welded together, the heat generated by the welding will not be directly conducted to the circuit board 300, thereby not causing inaccurate measurements of the temperature and pressure sensors and the pressure sensors, or not causing direct damage to the temperature and pressure sensors and the pressure sensors so that the temperature and pressure measurements cannot be performed.

[0041] In addition, based on the same inventive concept, the utility model also provides a single battery, such as Figure 5As shown, the single battery includes a battery body 800 and the aforementioned top cover assembly. The battery body 800 has an opening, and the top cover assembly is sealed and covered on the opening of the battery body 800.

[0042] In addition, based on the same inventive concept, the utility model also provides a battery, which includes a battery box and the aforementioned single cells, wherein the single cells are accommodated in the battery box.

[0043] In addition, based on the same inventive concept, the utility model also provides an electrical device, including the aforementioned battery.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0045] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A temperature and pressure collector, used in a battery, characterized in that: The temperature and pressure collector comprises: A packaging seat, wherein a fixing portion is provided on the packaging seat, and a through accommodating channel is provided inside the packaging seat, wherein the accommodating channel comprises a first channel and a second channel, and the cross-sectional dimension of the first channel is greater than the cross-sectional dimension of the second channel; A gland, covering the open end of the first channel, the gland being provided with a fixed portion cooperating with the fixing portion; A circuit board, the circumferential edge of which is sealed and connected to the bottom of the first channel, and the circuit board is far away from the fixing portion and the fixed portion; an elastic diaphragm, the elastic diaphragm is used to conduct pressure and temperature, the elastic diaphragm is sealed at the opening end of the second channel, and the second channel is filled with silicone oil; The temperature and pressure sensor assembly is arranged on the circuit board and located in the silicone oil, and comprises a temperature sensor and a pressure sensor for measuring temperature and pressure respectively.

2. The temperature and pressure collector according to claim 1, characterized in that: A sealing ring is provided between the circuit board and the pressure cover. The sealing ring is pressed against the circumferential edge of the circuit board under the action of the pressure cover. A groove is provided on the portion of the pressure cover away from the sealing ring. The packaging seat is inserted into the groove on the side facing the pressure cover and welded together.

3. The temperature and pressure collector according to claim 1 or 2, characterized in that: The circuit board is also provided with PIN pins in a sealed manner, and the temperature sensor and the pressure sensor are electrically connected to the corresponding PIN pins.

4. The temperature and pressure collector according to claim 1 or 2, characterized in that: The temperature and pressure sensor assembly also includes a digital signal processor, which is electrically connected to the temperature and pressure sensor and the pressure sensor. A PIN pin is sealed and pierced through the circuit board, and the digital signal processor is electrically connected to the PIN pin.

5. The temperature and pressure collector according to claim 1 or 2, characterized in that: An oil filling port is provided on the circuit board, and a sealing member for sealing the oil filling port is also provided on the circuit board.

6. The temperature and pressure collector according to claim 5, characterized in that: The middle part of the gland is hollowed out.

7. A top cover assembly, characterized in that: A temperature and pressure collector comprising a top cover as claimed in any one of claims 1 to 6, wherein the top cover is provided with a welding part, the pressure cover is provided with a welded part cooperating with the welding part, and the circuit board is away from the welding part and the welded part.

8. A single cell battery, characterized in that: It comprises a battery body and a top cover assembly as claimed in claim 7, wherein the battery body has an opening, and the top cover assembly is sealed and covered on the opening of the battery body.

9. A battery, characterized in that: It comprises a battery box and a single battery as claimed in claim 8, wherein the single battery is accommodated in the battery box.

10. An electrical device, characterized in that: Comprising the battery as claimed in claim 9.

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