A system generating electricity by damping expansion in a battery

Abstract

The present invention relates to a foam (3) which dampens the expansion of the cells (2.2) included in a lithium-based battery pack (2) during their use, and to a safe and environmentally friendly system which enables the physical stress generated on the foam (3) during the expansion of the cells (2.2) to be converted into electrical energy by being absorbed and the electrical energy to be stored on the battery.

Description

[0001] DESCRIPTION

[0002] A SYSTEM GENERATING ELECTRICITY BY DAMPING EXPANSION

[0003] IN A BATTERY

[0004] Technical Field

[0005] The present invention relates to a foam which dampens the expansion of the cells included in a lithium-based battery pack during their use, and to a safe and environmentally friendly system which enables the physical stress generated on the foam during the expansion of the cells to be converted into electrical energy by being absorbed and the electrical energy to be stored on the battery.

[0006] Background of the Invention

[0007] Lithium-based batteries are used to enable electrically powered vehicles and / or portable devices to operate since they have high energy density and fast charging / discharging features. The cells of lithium-based batteries expand during their use and the performance of the cell decreases and / or its operation is interrupted due to the expansion. For this reason, a foam is used to prevent cell expansion during the use of lithium-based batteries. The said foam enables the cell to operate safely by damping the expansion of the cell. However, the said foam is only concerned with damping the expansion of the cell.

[0008] For this reason, in the state of art, there is a need for a system which dampens the expansion of the cells during their use and enables the mechanical stress generated on the foam during the dampening of the expansion of the cell to be stored on it by converting it into electrical energy in order to enable the safe, efficient and environmentally friendly operation of the cells of the battery. The Chinese utility model document no. CN210123769U, an application included in the state of the art, discloses a system which prevents the reduction of the electrical properties of lithium batteries due to expansion by realizing absorption. In the utility model, the outer housing protects the battery core from harmful external influences by creating a sealed shield surrounding it. The inner housing comprises two shock absorption units that is capable of contacting the battery core, and the first one surrounds the inner housing, and the second one surrounds the outer housing. The expansion force inside the battery core is directed through shock absorption units. The first shock absorption unit consists of a series of transverse rubber strips arranged on the outer wall of the inner housing of the battery. These strips absorb the expansion of the battery core while alleviating the expansion force. The second shock absorption unit is located on the inner wall of the inner housing and protects the internal structure of the battery by absorbing the force generated during the expansion process of the battery core. The side surfaces and secondary surfaces arranged opposite each other in the inner casing that is designed to adapt to the shape of the battery core manage the expansion in a controlled manner by keeping the expansion of the battery core under control. In case of expansion of the battery core, the double-layer housing absorbs the force inside. As the inner casing expands, the force generated by the expansion passes through the first shock absorption unit and is transmitted to the second shock absorption unit on the inner wall of the outer housing. In this way, it enables the inner and outer housings to deform at the same time as the battery core. The expansion forces in the internal structure of the battery are balanced by the first shock absorption unit and mitigated in cooperation with the second shock absorption unit. In this way, the internal temperature control is optimized, and efficient operation is ensured by enabling homogeneous expansion of the battery core.

[0009] Summary of the Invention An object of the present invention is to realize a foam which dampens the expansion of the cells included in a lithium-based battery pack during their use, and to a safe and environmentally friendly system which enables the physical stress generated on the foam during the expansion of the cells to be converted into electrical energy by being absorbed and the electrical energy to be stored on the battery.

[0010] Detailed Description of the Invention

[0011] “A System Generating Electricity by Damping Expansion in a Battery” realized to fulfil the objective of the present invention is shown in the figures attached, in which:

[0012] Figure 1 is a view of the inventive system generating electricity by damping expansion in a battery.

[0013] Figure 2 is a close-up view of the parts of the inventive system generating electricity by damping expansion in a battery.

[0014] The components illustrated in the figures are individually numbered, where the numbers refer to the following:

[0015] 1. System

[0016] 2. Battery Pack

[0017] 2.1. Body

[0018] 2.2. Cell

[0019] 3. Foam

[0020] 4. Electrode

[0021] 5. Circuit An inventive system (1) which enables the expansion generated thereon to be damped and electricity to be generated comprises at least one battery pack (2) which comprises more than one cell (2.2) for storing electrical energy thereon and / or using the stored energy and a body (2.1) for protecting the cells (2.2) from external factors; at least one foam (3) which is positioned so as to be on the cells (2.2) located on the battery pack (2) and / or between the cells (2.2) and enables the stress generated thereon due to the expansion of the cell (2.2) to be converted into electrical energy; at least one electrode (4) which enables the electrical energy converted in the foam (3) to be received by being placed on the foam (3); and at least one circuit (5) which is formed by connecting the electrodes (4) of each foam (3) included in the battery pack (2) and enables the electrical energy generated on the foam (3) to be transmitted to the cell (2.2) by receiving it and the cell (2.2) to be charged.

[0022] The battery (2) included in the inventive system (1) is an energy storage unit that enables the storage of electrical energy and / or the use of stored electrical energy in order to enable the operation of any electrically powered vehicle and / or device in the form of an electric vehicle, electronic device, storage system and / or vessel. The battery (2) consists of at least one body (2.1) and a plurality of cells (2.2) included in the body (2.1) in order to enable the electrical energy to be stored. Each cell (2.2) included in the battery (2) is connected to each other in series and / or in parallel in order to enable the electrical energy to be stored. In a preferred embodiment of the invention, the battery (2) is a lithium battery having a structure in the form of a pouch-type, cylindrical prismatic formed according to the intended use.

[0023] The foam (3) included in the inventive system (1) dampens the expansion of the cells (2.2) due to use by being placed between the cells (2.2) included in the battery (2) and generates electrical energy by absorbing the physical stress generated by the expansion of the cells (2.2). The foam (3) is obtained by molding and drying the homogeneous mixture obtained by mixing any raw material that enables the expansion between the cells (2.1) to be damped with any piezoelectric material at a predetermined temperature in order to provide piezoelectric properties. In this way, it is enabled to obtain electrical energy from the physical stress energy generated on the foam (3) by providing piezoelectric properties. In the preferred embodiment of the invention, the foam (3) is obtained by mixing, molding and drying, at the appropriate temperature, the piezoelectric material in the form of PVDF, quartz, barium titanate, PZT-4 on the material in the form of silicone, polyurethane, vermiculite that enables the expansion of the cell (2.2) to be damped.

[0024] The electrode (4) included in the inventive system (1) is located on the foam (3) and enables the electrical energy to be transmitted to the circuit (5) by receiving it through the foam (3) that converts mechanical stress into electrical energy.

[0025] The circuit (5) included in the system (1) enables the electrical energy generated on the foam (3) to be transferred by connecting the electrodes (4) of each foam (3) included in the battery pack (2) with each other in a way to transmit electric current. The circuit (5) enables the electrical energy to be stored in the cell (2.3) to which it is connected by receiving the electrical energy generated on the foam (3). In the preferred embodiment of the invention, the circuit (5) is formed by connecting the electrodes (4) on each foam (3) in a way that they are parallel to each other. In the preferred embodiment of the invention, the circuit (5) is an MPPT circuit that enables the electrical energy received from the foam (3) to be stored on the battery (2) cell (2.2). In this way, the mechanical stress generated on the foam (3) by the cell (2.2) during its use is stored in the battery (2) cell (2.2) by being converted into electrical energy in order to be reused.

[0026] Industrial Application of the Invention In the inventive system (1), the battery pack (2) enables the electric energy in the form of an electric vehicle, energy storage system and / or vessel to be stored and / or used. There is at least one cell (2.2) included in the battery pack (2) that enables the electrical energy to be stored and the stored energy to be used, and it consists of a body (2) that protects the relevant cells (2.2) from the external environment. The foam (3) enables the expansion of the cell (2.2) due to use to be damped and the mechanical stress generated on it due to expansion to be converted into electrical energy by being placed on and / or between the battery (2) cells (2.2). The foam (3) is obtained by mixing, molding and drying, at the appropriate temperature, the piezoelectric material in the form of PVDF, quartz, barium titanate, PZT-4 in order to provide piezoelectric properties to the raw material in the form of silicone, polyurethane, vermiculite in order to enable the expansion of the cell (2.2) to be damped. The obtained foam (3) has piezoelectric properties and enables the mechanical stress it generates on the cell (2.2) to be converted into electrical energy. The electrical energy generated on the foam (3) is enabled to be transmitted to the circuit (5) through an electrode located on the foam (3). The circuit (5) enables each foam (3) included in the battery pack (2) to establish a conductive connection with each other and stores the electrical energy received through the foam (3) on the cell (2.2).

[0027] Within these basic concepts; it is possible to develop various embodiments of the inventive “A System (1) Generating Electricity by Damping Expansion in a Battery”; the invention cannot be limited to examples disclosed herein and it is essentially according to claims.

Claims

CLAIMS1. A system (1) which enables the expansion generated thereon to be damped and electricity to be generated; comprising at least one battery pack (2) which comprises more than one cell (2.2) for storing electrical energy thereon and / or using the stored energy and a body (2.1) for protecting the cells (2.2) from external factors; and characterized by at least one foam (3) which is positioned so as to be on the cells (2.2) located on the battery pack (2) and / or between the cells (2.2) and enables the stress generated thereon due to the expansion of the cell (2.2) to be converted into electrical energy; at least one electrode (4) which enables the electrical energy converted in the foam (3) to be received by being placed on the foam (3); and at least one circuit (5) which is formed by connecting the electrodes (4) of each foam (3) included in the battery pack (2) and enables the electrical energy generated on the foam (3) to be transmitted to the cell (2.2) by receiving it and the cell (2.2) to be charged.

2. A system (1) according to Claim 1; characterized by the battery (2) which is an energy storage unit that enables the storage of electrical energy and / or the use of stored electrical energy in order to enable the operation of any electrically powered vehicle and / or device in the form of an electric vehicle, electronic device, storage system and / or vessel.

3. A system (1) according to Claim 1 or 2; characterized by the battery (2) which consists of at least one body (2.1) and a plurality of cells (2.2) included in the body (2.1) in order to enable the electrical energy to be stored.

4. A system (1) according to any one of the preceding claims; characterized by the battery (2) in which each cell (2.2) therein is connected to each other in series and / or in parallel in order to enable the electrical energy to be stored.

5. A system (1) according to any one of the preceding claims; characterized by the battery (2) which is a lithium battery having a structure in the form of a pouch-type, cylindrical prismatic formed according to the intended use.

6. A system (1) according to any one of the preceding claims; characterized by the foam (3) which dampens the expansion of the cells (2.2) due to use by being placed between the cells (2.2) included in the battery (2) and generates electrical energy by absorbing the physical stress generated by the expansion of the cells (2.2).

7. A system (1) according to any one of the preceding claims; characterized by the foam (3) which is obtained by molding and drying the homogeneous mixture obtained by mixing any raw material that enables the expansion between the cells (2.1) to be damped with any piezoelectric material at a predetermined temperature in order to provide piezoelectric properties.

8. A system (1) according to Claim 7; characterized by the foam (3) which is obtained by mixing, molding and drying, at the appropriate temperature, the piezoelectric material in the form of PVDF, quartz, barium titanate, PZT-4 on the material in the form of silicone, polyurethane, vermiculite that enables the expansion of the cell (2.2) to be damped.

9. A system (1) according to any one of the preceding claims; characterized by the electrode (4) which is located on the foam (3) and enables the electrical energy to be transmitted to the circuit (5) by receiving it through the foam (3) that converts mechanical stress into electrical energy.

10. A system (1) according to any one of the preceding claims; characterized by the circuit (5) which enables the electrical energy generated on the foam (3) tobe transferred by connecting the electrodes (4) of each foam (3) included in the battery pack (2) with each other in a way to transmit electric current.

11. A system (1) according to any one of the preceding claims; characterized by the circuit (5) which enables the electrical energy to be stored in the cell (2.3) to which it is connected by receiving the electrical energy generated on the foam (3).

12. A system (1) according Claim 11; characterized by the circuit (5) which is formed by connecting the electrodes (4) on each foam (3) in a way that they are parallel to each other.

13. A system (1) according Claim 11; characterized by the circuit (5) which is an MPPT circuit that enables the electrical energy received from the foam (3) to be stored on the battery (2) cell (2.2).

Images