CN221102184U

CN221102184U - Battery module with temperature detection and pressure detection functions and energy storage equipment

Info

Publication number: CN221102184U
Application number: CN202322817141.XU
Authority: CN
Inventors: 李斌; 叶宏; 陈召凡
Original assignee: Tai Shen Technology Shenzhen Co ltd
Current assignee: Tai Shen Technology Shenzhen Co ltd
Filing date: 2023-10-19
Publication date: 2024-06-07
Anticipated expiration: 2033-10-19

Abstract

The application provides a battery module with temperature detection and pressure detection and energy storage equipment, wherein the battery module comprises at least two batteries, at least one thin film type temperature sensing part, at least one thin film type pressure sensing part and a processing device; the battery has a front face and a side face adjacent to the front face; the film type temperature sensing part is arranged on the side surface of the battery; the film type pressure sensing part is provided with an expansion force sensing part and a signal transmission part, the expansion force sensing part is clamped between the front surfaces of the two batteries, and the signal transmission part is arranged on the side surface of one of the batteries; the processing device is used for acquiring temperature data of the film type temperature sensing part and pressure data of the film type pressure sensing part. The application also provides energy storage equipment comprising the battery module. According to the application, the expansion force of the battery is detected by arranging the film type pressure sensing part, and the temperature condition of the battery is detected by arranging the film type temperature sensing part, so that the accuracy of monitoring the safety performance of the battery is improved.

Description

Battery module with temperature detection and pressure detection functions and energy storage equipment

Technical Field

The application belongs to the technical field of batteries, and particularly relates to a battery module with temperature detection and pressure detection.

Background

With the development of new energy, rechargeable batteries are attracting more attention, however, the batteries are connected with three spontaneous combustion explosion accidents, so that the safety and stability problems of the batteries are pushed to public opinion vents, the safety problems become pain points in the industry, and the safety problems are attracting more attention.

At present, the running state of the power battery is generally monitored and managed comprehensively through dimensions such as temperature, current detection and the like. The common temperature detection adopts NTC thermistor to gather the temperature in the battery module, and because NTC thermistor stereoplasm structure reason, select 3 ~ 4 collection points to monitor the temperature of whole battery module in order to avoid NTC thermistor's setting to cause the influence to battery module space, therefore the NTC thermistor that sets up often detects the ambient temperature that the battery was located, but the surface temperature of battery, and such detection mode is difficult to obtain the true temperature change condition of battery, simultaneously, only comes to judge the security performance of battery module through detecting the temperature data in the battery module not enough accurately yet.

Disclosure of utility model

The embodiment of the application aims to provide a battery module with temperature detection and pressure detection and energy storage equipment, so as to solve the technical problems that in the prior art, the actual temperature change condition of a battery is difficult to obtain, and the safety performance of the battery module is not accurate enough to judge by detecting temperature data in the battery module.

In order to achieve the above purpose, the application adopts the following technical scheme: the battery module with temperature detection and pressure detection comprises at least two batteries, at least one film type temperature sensing part, at least one film type pressure sensing part and a processing device; the battery is provided with a front face and a plurality of side faces adjacent to the front face, and the front faces of the two batteries are oppositely arranged; at least one of the batteries is provided with the film type temperature sensing part, and the film type temperature sensing part is arranged on the side surface of the battery; the film type pressure sensing part is provided with an expansion force sensing part and a signal transmission part, the expansion force sensing part is clamped between the front surfaces of the two batteries, and the signal transmission part is arranged on the side surface of one of the batteries; the processing device is used for acquiring temperature data of the film type temperature sensing part and pressure data of the film type pressure sensing part.

Optionally, the thin film type temperature sensing part comprises a first flexible substrate and a temperature sensing part; the temperature sensing part is arranged on the first flexible substrate;

the thin film type pressure sensing part comprises a second flexible substrate and a sensing material layer; an electrode layer is arranged on the second flexible substrate; the sensing material layer is arranged on the second flexible substrate and covers the electrode layer.

Optionally, one or more temperature sensing points are disposed on the thin film type temperature sensing part.

Optionally, the expansion force sensing part is provided with at least two pressure sensing points.

Optionally, a pole is disposed on a side surface of the battery, and at least one thin film type temperature sensing portion is disposed on a side of the battery where the pole is disposed.

Optionally, the thickness of the thin film type temperature sensing part is less than 1mm; the thickness of the film type pressure sensing part is smaller than 1mm.

Optionally, the thin film type temperature sensing part and the thin film type pressure sensing part are integrally provided; the thin film type pressure sensing part comprises an electrode layer and a sensing material layer, wherein the electrode layer is arranged on the flexible substrate, and the sensing material layer covers the electrode layer and is fixed on the flexible substrate;

one or more temperature sensing points are arranged on the thin film type temperature sensing part, and the temperature sensing points are arranged on the flexible substrate.

Optionally, the processing device is electrically connected with the thin film type temperature sensing part to obtain the electric signal change of the thin film type temperature sensing part; the processing device is electrically connected with the film type pressure sensing part to acquire the electric signal change of the film type pressure sensing part.

Optionally, the battery module further comprises a collector, and the processing device is in communication connection with the collector; the collector is electrically connected with the film type temperature sensing part, collects the electric signal change of the film type temperature sensing part and transmits relevant data to the processing device; the collector is electrically connected with the film type pressure sensing part, and is used for collecting the electric signal change of the film type pressure sensing part and transmitting relevant data to the processing device.

The application also provides energy storage equipment comprising the battery module.

The battery module with temperature detection and pressure detection and the energy storage device provided by the application have the beneficial effects that:

(1) Compared with the prior art, the front sides of the two batteries are oppositely arranged, and the film type pressure sensing part is arranged between the front sides of the two batteries and can be extruded when the batteries expand, so that the film type pressure sensing part can acquire the expansion force information of the batteries, and further richer data can be provided for monitoring of the battery module.

(2) Compared with the prior art, the application has the advantages that the thin film type pressure sensing part is arranged between the front surfaces of the two batteries, and the integration difficulty between the expansion force detection device and the battery module is greatly reduced due to the light and thin characteristics of the thin film type pressure sensing part.

(3) Compared with the prior art, the thin film type temperature sensing part is arranged on the side surface of the battery, so that the thin film type temperature sensing part can directly acquire the surface temperature of the battery, and more accurate and effective temperature data can be provided; the thin film type temperature sensing part is light and thin, so that the integration difficulty between the temperature detection device and the battery module can be greatly reduced, the surface temperature can be well integrated on the surface of the battery while the surface temperature is obtained, the adverse effect of expansion extrusion between the batteries on the thin film type temperature sensing part can be avoided by arranging the thin film type temperature sensing part on the side surface of the battery, and the durability and the accuracy of the detection result of the thin film type temperature sensing part are further improved.

(4) Compared with the prior art, the application provides richer and deeper data for monitoring the battery module by acquiring the pressure data and the temperature data through the processing device.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of an explosion structure of a battery module with temperature detection and pressure detection according to an embodiment of the present application;

fig. 2 is a schematic diagram of a three-dimensional structure of a battery module with temperature detection and pressure detection according to an embodiment of the present application;

Fig. 3 is a schematic diagram showing a three-dimensional structure of a battery module with temperature detection and pressure detection according to an embodiment of the present application;

Fig. 4 is a schematic diagram of an assembly structure of a single battery in a battery module with temperature detection and pressure detection according to an embodiment of the present application;

fig. 5 is a schematic diagram showing an assembly structure of a single battery in a battery module with temperature detection and pressure detection according to an embodiment of the present application;

Fig. 6 is a schematic diagram showing an integrated structure of a thin film type temperature sensing part and a thin film type pressure sensing part in a battery module with temperature detection and pressure detection according to an embodiment of the present application;

Fig. 7 is a schematic diagram showing an integrated structure of a thin film type temperature sensing part and a thin film type pressure sensing part in a battery module with temperature detection and pressure detection according to an embodiment of the present application.

Wherein, each reference sign in the figure:

100-cell; 101-front side; 102-side; 103-pole;

200-a thin film type temperature sensing part; 201-a temperature sensing point;

300-a thin film pressure sensing portion; 301-an expansion force sensing part; 302-a signal transmission section; 303-pressure sensing point.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be 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 be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Referring to fig. 1 to 4, a battery module with temperature detection and pressure detection according to an embodiment of the application will be described. The battery module with temperature detection and pressure detection comprises at least two batteries 100, at least one film type temperature sensing part 200, at least one film type pressure sensing part 300 and a processing device (not shown); the battery 100 has a front surface 101 and a plurality of side surfaces 102 adjacent to the front surface 101, and the front surfaces 101 of the two batteries 100 are arranged opposite to each other; at least one battery 100 is provided with a thin film type temperature sensing part 200, and the thin film type temperature sensing part 200 is arranged on the side surface 102 of the battery 100; the film-type pressure sensing part 300 has an expansion force sensing part 301 and a signal transmission part 302, the expansion force sensing part 301 is arranged between the front faces 101 of the two batteries 100 in a clamping way, and the signal transmission part 302 is arranged on the side face 102 of one of the batteries 100; the processing device is used for acquiring temperature data of the film type temperature sensing part 200 and pressure data of the film type pressure sensing part 300.

Compared with the prior art, in the battery module with temperature detection and pressure detection provided by the embodiment of the application, the front sides 101 of the two batteries 100 are oppositely arranged, and the film type pressure sensing part 300 is pressed when the batteries 100 expand by arranging the film type pressure sensing part 300 between the front sides 101 of the two batteries 100, so that the film type pressure sensing part 300 can acquire the expansion force information of the batteries 100, and further richer data can be provided for monitoring the battery module.

Meanwhile, in the present embodiment, by providing the thin film type pressure sensing part 300 between the front sides 101 of the two batteries 100, the difficulty of integration between the expansion force detecting device and the battery module is greatly reduced due to the thin and lightweight characteristics of the thin film type pressure sensing part 300.

Further, in the present embodiment, the thin film type temperature sensing portion 200 is disposed on the side 102 of the battery 100, so that the thin film type temperature sensing portion 200 can directly obtain the surface temperature of the battery 100, and more accurate and effective temperature data can be provided; the thin film type temperature sensing portion 200 is light and thin, so that the integration difficulty between the temperature detection device and the battery module can be greatly reduced, the surface temperature can be well integrated on the surface of the battery 100 while the surface temperature is obtained, the thin film type temperature sensing portion 200 is arranged on the side surface 102 of the battery 100, adverse effects of expansion extrusion between the batteries 100 on the thin film type temperature sensing portion 200 can be avoided, and the durability and the accuracy of the detection result of the thin film type temperature sensing portion 200 are further improved. The processing device is used for acquiring the pressure data and the temperature data, so that richer and deeper data are provided for monitoring the battery module.

The type of the thin film type temperature sensing part 200 is not particularly limited in this embodiment, as long as the characteristics of being able to detect temperature and being thin and flexible are satisfied.

In one embodiment of the present application, the thin film type temperature sensing part 200 includes a first flexible substrate and a temperature sensing part; the temperature sensing part is arranged on the first flexible substrate.

In this embodiment, the temperature sensing part is configured to receive a change in temperature and generate a change in electrical signal, and the electrical signal is calculated to obtain a corresponding temperature.

The type of the film-type pressure sensing part 300 is not particularly limited in this embodiment, as long as the characteristics of being able to detect pressure and being thin and flexible are satisfied.

In one embodiment of the present application, the thin film pressure sensing portion 300 includes a second flexible substrate and a sensing material layer; an electrode layer is arranged on the second flexible substrate; the sensing material layer is arranged on the second flexible substrate and covers the electrode layer.

In this embodiment, the sensing material layer is pressed to change the contact area with the electrode layer, so that the change of the electrical signal occurs, and the corresponding pressure is obtained by calculating the electrical signal.

In this embodiment, the thin film temperature sensing portion 200 and the thin film pressure sensing portion 300 can adapt to the battery structure and the mounting structure between the batteries 100 in the battery module due to the thin and flexible characteristics thereof, so that the overall structure of the battery module is not affected, and the overall design of the battery module is facilitated. Meanwhile, the effectiveness of data acquisition can be ensured by designing the relevant positions of the thin film type temperature sensing part 200 and the thin film type pressure sensing part 300 on the battery module.

As one embodiment, the thin film type temperature sensing part 200 is fixed to the surface of the battery 100 by means of adhesion;

as one embodiment, the film-type pressure sensing part 300 is fixed between the batteries 100 by means of adhesion; or, the film type pressure sensing part 300 is clamped and fixed between the batteries 100 through the two batteries 100; or when a clamping plate (not shown) is further provided between the two batteries 100, the film-type pressure sensing part 300 may be fixed to the clamping plate.

In one embodiment of the present application, referring to fig. 2 and 3, one or more temperature sensing points 201 are disposed on the thin film temperature sensing portion 200.

As an embodiment, the battery module may be provided with a plurality of film-type temperature sensing parts 200, and one film-type temperature sensing part 200 may be provided on the same battery 100, or a plurality of film-type temperature sensing parts 200 may be provided.

As a specific embodiment, at least two temperature sensing points 201 are disposed on the same battery 100, the temperature of the same battery 100 is monitored through the two temperature sensing points 201, the detection data between the two temperature sensing points 201 can be compared to select more optimal detection data, and meanwhile, when any one temperature sensing point 201 fails, the temperature change of the battery 100 can be obtained through the other temperature sensing point 201, so that the detection reliability is further improved. The two temperature sensing points 201 may be disposed on the same thin film type temperature sensing portion 200 or may be disposed on different thin film type temperature sensing portions 200.

In one embodiment of the present application, referring to fig. 7, the expansion force sensing part is provided with at least two pressure sensing points 303. I.e. at least two pressure sensing points 303 are provided on or integrated in the same flexible substrate.

It can be understood that the expansion force information of the corresponding position of the battery 100 can be obtained through the pressure sensing points 303, and the expansion force information of a plurality of positions on the surface of the same battery 100 can be obtained through arranging a plurality of pressure sensing points 303, so that a large amount of expansion force data on the surface of the battery 100 can be provided, the expansion condition of the battery 100 can be reflected more accurately, and the accuracy of the detection result is further improved. Meanwhile, when any one pressure sensing point 303 fails, the expansion force change of the battery 100 can be obtained through the other pressure sensing point 303, so that the detection reliability is further improved.

In one embodiment of the present application, referring to fig. 4 and 5 together, one side 102 of the battery 100 is provided with a post 103, and at least one thin film type temperature sensing portion 200 is disposed on the side of the battery 100 provided with the post 103.

It can be understood that the post 103 of the battery 100 extends into the battery 100, and the heat generated during the operation of the battery can reflect the real heat generated inside the battery 100 relative to other external surfaces of the battery 100, and in this embodiment, the film type temperature sensing portion 200 is disposed on the surface of the battery provided with the post 103, so that the temperature change condition of the battery 100 can be reflected more truly and accurately by the film type temperature sensing portion 200, more accurate temperature data can be provided for monitoring the battery module, and meanwhile, the film type temperature sensing portion 200 is light and thin, so that the film type temperature sensing portion 200 can be well integrated on the side of the battery 100 provided with the post 103, thereby reducing the installation difficulty and further improving the reliability of detection.

As another embodiment, the battery 100 is provided with a post 103, the post 103 is disposed on one of the side surfaces 102 adjacent to the front surface 101 of the battery 100, and at least one thin film type temperature sensing part 200 is disposed on the side surface 102 of the battery 100 where the post 103 is not disposed.

As an embodiment, the thickness of the thin film type temperature sensing part 200 is limited, and the thickness of the thin film type temperature sensing part 200 is less than 1mm. As one preferable, the thickness of the thin film type temperature sensing part 200 is not more than 0.4mm. Specifically, the thickness of the film-type temperature sensor 200 is any one of 0.4mm, 0.3mm, 0.2mm, and 0.1 mm.

It can be appreciated that, by limiting the thickness of the thin film type temperature sensing portion 200, the thin film type temperature sensing portion 200 can be better integrated on the surface of the battery 100, so that the space occupied by the thin film type temperature sensing portion 200 on the battery module can be reduced, and thus, the thin film type temperature sensing portion 200 can be selectively arranged on each battery 100 of the battery module, and the influence of the arrangement of the thin film type temperature sensing portion 200 on the battery module can be further reduced while the detection capability is improved.

As an implementation, the thickness of the thin film pressure sensing part 300 is limited, and the thickness of the thin film pressure sensing part 300 is less than 1mm. As one preferable, the thickness of the thin film type pressure sensing part 300 is not more than 0.4mm. Specifically, the thickness of the film-type pressure sensing portion 300 is any one of 0.4mm, 0.3mm, 0.2mm, and 0.1 mm.

It can be understood that, since in order to obtain the actual situation of the expansion force of the battery, in this embodiment, the film pressure sensing portion 300 is disposed between two batteries 100, if the film pressure sensing portion 300 disposed between the batteries 100 is too thick, the overall design and installation of the battery module will be affected, and the number of the installed batteries may be affected under the same volume, therefore, in this embodiment, by limiting the thickness of the film pressure sensing portion 300, the influence of the film pressure sensing portion 300 on the overall assembly of the battery module can be reduced, and the adverse effect of the setting of the sensing portion on the battery module can be avoided while the expansion force detection is satisfied.

In one embodiment of the present application, referring to fig. 5 and 6, the thin film type temperature sensing portion 200 and the thin film type pressure sensing portion 300 are integrally provided. The film-type pressure sensing part 300 includes an electrode layer disposed on the flexible substrate and a sensing material layer covering the electrode layer and fixed on the flexible substrate; one or more temperature sensing points 201 are arranged on the film type temperature sensing part 200, and the temperature sensing points 201 are arranged on the flexible substrate. That is, the same flexible substrate is provided with the temperature sensing point 201 and the pressure sensing point 303. The arrangement mode enables the overall integration level of the battery module to be higher.

Specifically, the portion provided with the pressure sensing point 303 is sandwiched between the front faces 101 of the two batteries 100, and the portion provided with the temperature sensing point 201 extends from between the two batteries 100 and is bent to be provided on the side face 102 adjacent to the front face 101 of the battery 100.

It can be appreciated that the thin film type temperature point and the thin film type pressure sensing point 303 are arranged on the same flexible substrate, so that the installation is convenient, different single detection devices are not required to be adopted when the temperature and the expansion force of the battery 100 are detected, and the integration difficulty between the detection devices and the battery module is greatly reduced.

In one embodiment of the present application, the processing device is electrically connected to the thin film type temperature sensing portion 200 to obtain the electrical signal change of the thin film type temperature sensing portion 200; the processing device is electrically connected to the film pressure sensing portion 300 to obtain the electrical signal change of the film pressure sensing portion 300.

In another embodiment of the present application, the battery module further includes a collector (not shown), and the processing device is communicatively connected to the collector; the collector is electrically connected with the film type temperature sensing part 200, and is used for collecting the electric signal change of the film type temperature sensing part 200 and transmitting relevant data to the processing device; the collector is electrically connected with the film type pressure sensing part 300, and the collector collects the electric signal change of the film type pressure sensing part 300 and transmits relevant data to the processing device.

The embodiment of the application also provides energy storage equipment, which comprises the battery module.

The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.

Claims

1. The utility model provides a take temperature detection and pressure detection's battery module, its characterized in that includes:

The battery comprises at least two batteries, wherein the batteries are provided with a front face and a plurality of side faces adjacent to the front face, and the front faces of the two batteries are oppositely arranged;

At least one thin film type temperature sensing part, at least one battery is provided with the thin film type temperature sensing part, and the thin film type temperature sensing part is arranged on the side surface of the battery;

The device comprises at least one film type pressure sensing part, a pressure sensor and a signal transmission part, wherein the film type pressure sensing part is provided with an expansion force sensing part and a signal transmission part, the expansion force sensing part is clamped between the front surfaces of two batteries, and the signal transmission part is arranged on the side surface of one battery; and

And the processing device is used for acquiring the temperature data of the film type temperature sensing part and the pressure data of the film type pressure sensing part.

2. The battery module with temperature and pressure detection according to claim 1, wherein the thin film type temperature sensing part comprises a first flexible substrate and a temperature sensing part; the temperature sensing part is arranged on the first flexible substrate;

3. The battery module with temperature and pressure detection according to claim 1, wherein one or more temperature sensing points are provided on the thin film type temperature sensing part.

4. The battery module with temperature and pressure detection according to claim 1, wherein the expansion force sensing part is provided with at least two pressure sensing points.

5. The battery module with temperature and pressure detection according to claim 1, wherein a side of the battery is provided with a post, and at least one of the thin film type temperature sensing parts is provided at a side of the battery provided with the post.

6. The battery module with temperature and pressure detection according to claim 1, wherein the thickness of the thin film type temperature sensing part is less than 1mm; the thickness of the film type pressure sensing part is smaller than 1mm.

7. The battery module with temperature and pressure detection according to claim 1, wherein the thin film type temperature sensing part and the thin film type pressure sensing part are provided as one body;

The thin film type pressure sensing part comprises an electrode layer and a sensing material layer, wherein the electrode layer is arranged on the flexible substrate, and the sensing material layer covers the electrode layer and is fixed on the flexible substrate;

8. The battery module with temperature and pressure detection according to any one of claims 1 to 7, wherein the processing device is electrically connected to the thin film type temperature sensing part to obtain the electrical signal change of the thin film type temperature sensing part;

the processing device is electrically connected with the film type pressure sensing part to acquire the electric signal change of the film type pressure sensing part.

9. The battery module with temperature and pressure detection according to any one of claims 1 to 7, wherein the battery module further comprises a collector, and the processing device is in communication connection with the collector; the collector is electrically connected with the film type temperature sensing part, collects the electric signal change of the film type temperature sensing part and transmits relevant data to the processing device;

The collector is electrically connected with the film type pressure sensing part, and is used for collecting the electric signal change of the film type pressure sensing part and transmitting relevant data to the processing device.

10. An energy storage device comprising a battery module according to any one of claims 1-9.