A battery cell with a heating foil.

Abstract

This invention relates to a battery cell (1) in which a heating foil with an integrated strain gauge is fitted in order to optimize battery life by controlling cell pressure and temperature.

Description

1 TARIFF A battery cell with a heating foil. Technical Area This invention optimizes battery life through cell pressure and temperature control. a heating foil with an integrated strain gauge is placed in order to measure It is related to the battery cell. Previous Tech 10 In cells, which are the basic units of electrochemical batteries, the cells go through standby and charge-discharge phases. or expands and contracts as a result of chemical reactions. This expansion and contraction... Shrinkage can lead to delamination of internal battery cells and components, and even damage the battery itself. This can cause deformation of the packaging. This situation affects the effective thermal management of the battery. 15 This further shortens its lifespan and, in worst-case scenarios, leads to thermal runaway. It opens. Optimum battery life is supported by 'breathing' battery during discharge and charge cycles. It is obtained by applying physical pressure of moderate force in some way. 20 Pressure ensures that electrical and thermal connections remain in contact throughout this period. It ensures that lithium-ion batteries operate safely and efficiently and at maximum capacity. to reach its service life within the temperature range specified by the cell manufacturer. Heating and cooling must be controlled in the thermal management of battery packs. It is as important as heating to achieve optimum charge / discharge performance. 25 It is possible. Therefore, the exposure that batteries are subjected to throughout their lifespan... Both pressure and temperature values ​​need to be kept within the optimum range. Batteries increase in volume during charging and discharging. These volumetric changes... Foam is inserted between the battery cells to check for incoming signals. This foam material is 30 The calculation is performed by optimizing for volumetric changes and potential compression that may occur. 2 However, the temperature of the batteries is affected by the cooling-heating plate on top of the cells. The liquid is rotated to try and control the flow. However, in such applications, the cells High temperature differences occur between them, which affects both charging and discharging. This leads to a limitation in the capacity of the cells. Therefore, battery life is optimized through cell pressure and temperature controls. a heating foil with an integrated strain gauge is placed in order to measure It appears that a battery cell is needed. According to Chinese patent document number CN107068959, which is included in the known state of the art, 10 from the system for early detection of thermal runaway events in the power battery It is mentioned. The invention that is the subject of the patent document in question is an electrical device. a system to detect thermal runaway events early in the bus's power battery It relates to the system and the method of controlling this system. Early detection system; detection a cell group to be assembled, a resistance strain gauge group, a power supply, a 15 Battery system data acquisition module, a vehicle general instrument and an inter-vehicle It consists of an internet (IoV) platform. The group of cells to be detected is multiple. It includes the battery cell. The resistance strain gauge assembly measures the outer casing of the cells to be detected. It contains multiple resistance strain gauges fixed to its surface. Each resistor The internal resistance of the strain gauge corresponds to the amount of deformation of the relevant cell shell. It varies. The battery system data acquisition module includes a resistance acquisition module and The resistance value of each strain gauge is determined by this module via a wired connection. The resistance value is collected. The collected resistance value is transmitted to the vehicle via the vehicle's general CAN communication network. The data is transmitted to the instrument. The instrument then measures the resistance value of each strain gauge. It displays relevant information and provides alarm and guidance warnings accordingly. This 25 Thermal runaway incidents in electric buses can be effectively investigated using the system. It can be detected and prevented beforehand. Brief Description of the Invention 3 The aim of this invention is to extend battery life through cell pressure and temperature control. Heating foil with integrated strain gauge for optimization purposes. It is about implementing a battery cell that is placed inside. Detailed Description of the Invention 5 The purpose of this invention was achieved through a "Heating Foil Equipped with..." The "Battery Cell" is shown in the attached diagram; these diagrams are as follows: Figure 1 shows a view of the battery cell, which is the subject of the invention. 10 The parts shown in the figures are individually numbered, and these numbers... The corresponding answers are given below. 1. Battery cell 15 2. Body 3. Strain gauge 4. Foam 5. Heating foil To optimize battery life through pressure and temperature controls. a battery cell in which a heating foil with integrated strain gauge is placed (1); - at least one body (2), - positioned on the cell body (2) and the body (2) tension and / or at least one 25 configured to measure the amount of deformation. strain gauge (3), - placed around the body (2) to optimize battery life during movement between cell bodies (2) the body (2) from impact to protect and isolate hot spots, preventing the cell from overheating. 30 designed to block and transfer the generated heat to the cooling plate at least one foam (4) and 4 - located on the body (2) and thanks to its electrical conductivity to heat up when current passes through it and heat the cell body (2) It contains at least one heating foil (5) that is structured. The strain gauge (3) located in the battery cell (1) is attached to the heating foil (5) 5 It is a sensor that is integrated and consists of a conductive wire or metal foil pattern. When the surface of the body (2) of the strain gauge (3) is stretched (elongation or compression (when) to show the changing electrical resistance by stretching the same amount It is being structured. The invention is between the foam (4) cells in the battery cell (1) It is positioned and configured to optimize cell pressure. The subject foam (4), in terms of size, occurs during the battery charge-discharge process. and volumetric changes and compressions obtained by means of strain gauge (3) It is adjusted to optimize. 15 The heating foil (5) located in the battery cell (1) of the invention heats the housing (2) to ensure the battery functions properly in cold weather It is structured. The heating foil (5) in question is lithium metal during charging. To prevent accumulation, the cell body (2) must remain at a certain temperature 20 It is configured to provide heating. Industrial application of the invention The subject of the invention is a 25 integrated strain gauge (3) integrated into a battery cell (1). The volume and temperature of the cells with heating foil (5) and the service life of the batteries Both temperature and pressure control to maintain optimum levels throughout. This is provided. In addition, compression is based on previously defined large datasets. By optimizing pressure and temperature, the battery life is extended. This pressure And during temperature optimization, the temperature difference between the cells was 30 to a minimum and for cell temperatures to remain more homogeneous It is predicted that this will not only extend the lifespan of cells, but also over time, it will also improve charging performance and shorten charging times. It will help. Sensor integrated heating foils (5), as cell, module and package material 5 when used, the volumetric expansion that occurs during battery operation It can also be used to optimize both volumetric expansion and... The aim is to extend cell life by controlling temperatures. Additionally, By keeping cell temperatures more homogeneous and at an optimum level, the charge-discharge process... Improving its performance is also a goal. 10 Based on these fundamental concepts, the invention is titled "A Battery with Heating Foil". It is possible to develop a wide variety of applications related to the “Cell (1)”, and the invention This cannot be limited to the examples described here, but is primarily stated in the claims. It is like this. 15

Claims

6 REQUESTS 1. Optimizing battery life through pressure and temperature controls. providing; - at least one body (2), 5 - positioned on the cell body (2) and the body (2) tension and / or at least one configured to measure the amount of deformation. strain gauge (3), - placed around the body (2) to optimize battery life during movement between cell bodies (2) the body (2) from impact 10 to protect and isolate hot spots, preventing the cell from overheating. designed to block and transfer the generated heat to the cooling plate at least one foam (4) and - located on the body (2) and thanks to its electrical conductivity When current passes through it, it heats up and heats the cell body (2) 15 a battery characterized by having at least one heating foil (5) configured cell (1).

2. Integrated into the heating foil (5) and a conductive wire or metal foil 20 characterized by a strain gauge (3) which is a sensor consisting of a pattern A battery cell as in Claim 1 (1).

3. The electrical charge changes by stretching the surface of the body (2) by the same amount when stretched. characterized by a strain gauge (3) configured to show its resistance. A battery cell as in Claim 1 or 2 (1). 25 4. To optimize cell pressure by being positioned between cells. from the above claims characterized by structured foam (4) a battery cell like any other (1). 7 5. In terms of size, the strain that occurs during the battery's charging and discharging process. volumetric changes and compressions obtained by means of the measuring instrument (3) characterized by foam (4) adjusted to optimize a battery cell (1) as in any of the above requirements.

6. Heating the shell (2) to ensure the battery works properly in cold weather. characterized by a heating foil (5) structured to provide a battery cell (1) as in any of the above requirements.

7. To prevent lithium metal buildup during charging, cell 10 configured to heat its body (2) to keep it at a certain temperature any of the above requirements characterized by heating foil (5) a battery cell like one in (1).

Images