Anti-overcharge lithium ion power battery

Abstract

The utility model belongs to the technical field of batteries, and particularly relates to an anti-overcharge lithium ion power battery which comprises a heat conducting plate, a heat dissipation plate, a heat dissipation fan, a battery frame, a lithium battery and an anti-overcharge protection assembly. The anti-overcharge protection assembly comprises a first charging loop and a second charging loop. The anti-overcharge protection assembly comprises a first charging loop and a second charging loop. According to the anti-overcharge lithium ion power battery, heat dissipation of the lithium battery is accelerated through the heat conduction plate, the heat dissipation plate and the heat dissipation fan, the temperature of the lithium battery is reduced, overheat expansion of the lithium battery is avoided, safety is improved, the first charging loop and the second charging loop form an anti-overcharge protection structure, the lithium battery expands outwards when being subjected to overheat expansion, and the overcharge protection effect is improved. According to the lithium battery pack, the conductive connector and the conductive socket are separated to form an open circuit and disconnect an external power supply, so that the lithium battery is subjected to anti-overcharge protection, the anti-overcharge protection structure is simpler, the cost and the failure rate of the whole lithium battery pack are reduced, and the reliability is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of batteries, and in particular relates to an overcharge-proof lithium-ion power battery. Background Art

[0002] With global energy supply constraints, climate change, and environmental pollution looming, more and more countries are recognizing the importance of renewable energy and are vigorously developing it, particularly wind and photovoltaic power. With the growth of wind and photovoltaic power generation, the demand for auxiliary power services such as peak and frequency regulation, and output smoothing has increased significantly. Energy storage, as an additional flexible regulation resource, will play a crucial role in accommodating renewable energy, regulating frequency, and shifting peaks and valleys.

[0003] According to the national strategic development plan, the 14th Five-Year Plan is a period of large-scale development for the energy storage industry. Currently, electrochemical energy storage offers the highest overall cost-effectiveness, with lithium iron phosphate offering the best cycle life and cost. As a core component of energy storage systems, battery packs are crucial for their safety, reliability, and thermal management.

[0004] During lithium battery charging, the continued heat buildup causes the battery to expand. If heat isn't dissipated promptly, the battery will continue to heat up and expand, potentially posing a safety hazard. Existing technology uses integrated circuits (ICs) to control electronic circuits for overcharge protection. However, multiple ICs are required in a lithium battery pack to implement overcharge protection, resulting in a complex overcharge protection structure, high overall battery pack cost, high failure rate, and low reliability. Utility Model Content

[0005] The purpose of the utility model is to provide an overcharge-proof lithium-ion power battery, aiming to solve the technical problems in the prior art that continuous charging of lithium batteries causes heat increase, lithium batteries will expand and cause safety hazards, the integrated circuit IC overcharge protection structure is complex, and the overall lithium battery pack has high cost, high failure rate and low reliability.

[0006] To achieve the above-mentioned purpose, the embodiment of the present invention provides an anti-overcharge lithium-ion power battery, comprising a heat conducting plate, a heat dissipation plate, a cooling fan, a battery frame, a lithium battery, and an anti-overcharge protection component, wherein the heat conducting plate is arranged on one side of the lithium battery and connected to the lithium battery, the heat dissipation plate is arranged on one side of the battery frame and connected to the battery frame, the cooling fan is arranged on one side of the lithium battery and connected to the heat dissipation plate, and the lithium battery is installed in the battery frame;

[0007] The anti-overcharge protection component includes a first charging circuit and a second charging circuit, the first charging circuit and the second charging circuit are electrically connected to an external power supply, the first charging circuit and the second charging circuit are both arranged on the lithium battery, and the first charging circuit and the second charging circuit are detachably connected; the first charging circuit includes a first electrical conductor and a conductive connector, the first electrical conductor is fixedly wound around the lithium battery and electrically connected to the conductive connector; the second charging circuit includes a second electrical conductor and a conductive socket, the second electrical conductor is fixedly wound around the lithium battery and electrically connected to the conductive socket, and the conductive connector is arranged on one side of the conductive socket and plugged into the conductive socket.

[0008] As an optional solution of the present invention, the conductive connector includes a connector body and a conductive plug. The first electrical wire passes through the connector body and is electrically connected to the conductive plug. Two conductive plugs are provided and are fixedly connected to the connector body.

[0009] As an optional solution of the present invention, the conductive socket includes a socket body and a conductive socket, the second electrical wire passes through the socket body and is electrically connected to the conductive socket, the conductive socket matches the conductive plug, and the conductive plug is plugged into the conductive socket.

[0010] As an optional solution of the present invention, the heat conducting plate is made of copper, and a heat conducting hole is provided on the heat conducting plate. The heat conducting hole is arranged on one side of the lithium battery. There are multiple heat conducting holes, which are evenly arranged on the heat conducting plate.

[0011] As an optional solution of the present invention, a heat dissipation hole is provided on the heat dissipation plate, the heat dissipation hole is arranged on one side of the lithium battery, and the heat dissipation fan is arranged in the heat dissipation hole.

[0012] As an optional solution of the present invention, ventilation holes are provided on the battery frame, and the ventilation holes are arranged on one side of the heat dissipation holes. The heat conduction holes and ventilation holes are arranged in overlapping manner. The number of the ventilation holes and the heat conduction holes is the same and they are evenly arranged on the battery frame.

[0013] As an optional solution of the present invention, there are multiple lithium batteries, and adjacent lithium batteries are arranged in parallel and at intervals.

[0014] As an optional solution of the present invention, the battery frame is provided with multiple, and the multiple lithium batteries are fixedly installed in the battery frame; the battery frame is provided with a battery positioning hole, and the lithium batteries are fixedly installed in the battery positioning hole.

[0015] The above one or more technical solutions in the overcharge prevention lithium-ion power battery provided by the embodiment of the present invention have at least one of the following technical effects:

[0016] The overcharge-proof lithium-ion power battery provided by the present application includes a heat conducting plate, a heat sink, a cooling fan, a battery frame, a lithium battery and an overcharge protection component. The heat conducting plate, the heat sink and the cooling fan accelerate the heat dissipation of the lithium battery, reduce the temperature of the lithium battery, prevent the lithium battery from overheating and expanding, and improve safety. The first charging circuit and the second charging circuit constitute an overcharge protection structure. When the lithium battery overheats and expands, it will expand outward, separating the conductive connector from the conductive socket, forming a short circuit, and disconnecting the external power supply, thereby protecting the lithium battery from overcharge. The overcharge protection structure is more streamlined, the overall lithium battery pack reduces cost and failure rate, and improves reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 This is a schematic structural diagram of an overcharge-proof lithium-ion power battery provided by an embodiment of the present utility model.

[0019] Figure 2 A three-dimensional diagram of a lithium battery and an anti-overcharge protection component of an anti-overcharge lithium-ion power battery provided in an embodiment of the present utility model.

[0020] Figure 3 A side view of a lithium battery and an anti-overcharge protection component of an anti-overcharge lithium-ion power battery provided by an embodiment of the utility model.

[0021] Figure 4 A schematic structural diagram of a heat conducting plate for an overcharge-proof lithium-ion power battery provided by an embodiment of the present utility model.

[0022] Figure 5 A schematic structural diagram of a battery frame for an overcharge-proof lithium-ion power battery provided by an embodiment of the present utility model.

[0023] Figure 6 This is a partial enlarged view of A in 2.

[0024] Among them, the reference numerals in the figures are:

[0025] 1. Heat conduction plate; 2. Heat dissipation plate; 3. Cooling fan; 4. Battery frame; 5. Lithium battery; 6. Anti-overcharge protection component;

[0026] 11. Thermal holes;

[0027] 21. Heat dissipation holes;

[0028] 41. Ventilation hole; 42. Battery positioning hole;

[0029] 61. First charging circuit; 62. Second charging circuit;

[0030] 611, first electrical conductor; 612, conductive connector; 613, connector body; 614, conductive insert;

[0031] 621. Second electrical conductor; 622. Conductive socket; 623. Socket body; 624. Conductive socket. DETAILED DESCRIPTION

[0032] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0033] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0035] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0036] In one embodiment of the present invention, Figures 1 to 6 As shown, an overcharge-proof lithium-ion power battery is provided, comprising a heat conducting plate 1, a heat sink 2, a cooling fan 3, a battery frame 4, a lithium battery 5, and an overcharge protection assembly 6. The heat conducting plate 1 is disposed on one side of the lithium battery 5 and is fixedly connected to the lithium battery 5. The heat sink 2 is disposed on one side of the battery frame 4 and is fixedly connected to the battery frame 4. The cooling fan 3 is disposed on one side of the lithium battery 5 and is slightly connected to the heat sink 2. The lithium battery 5 is fixedly mounted to the battery frame 4.

[0037] The overcharge protection assembly 6 includes a first charging circuit 61 and a second charging circuit 62. The first and second charging circuits 61 and 62 are electrically connected to an external power source and are used to control the external power source. The first and second charging circuits 61 and 62 are both located on the lithium battery 5, and the first and second charging circuits 61 and 62 are detachably connected. The first charging circuit 61 includes a first electrical conductor 611 and a conductive connector 612. The first electrical conductor 611 is fixedly wound around the lithium battery 5 and electrically connected to the conductive connector 612. The second charging circuit 62 includes a second electrical conductor 621 and a conductive socket 622. The second electrical conductor 621 is fixedly wound around the lithium battery 5 and electrically connected to the conductive socket 622. The conductive connector 612 is located on one side of the conductive socket 622 and plugs into the conductive socket 622.

[0038] The anti-overcharge lithium-ion power battery provided in the present application, the heat conducting plate 1, the heat dissipation plate 2 and the cooling fan 3 accelerate the heat dissipation of the lithium battery 5, reduce the temperature of the lithium battery 5, prevent the lithium battery 5 from overheating and expanding, and improve safety. The first charging circuit 61 and the second charging circuit 62 form an anti-overcharge protection structure. When the lithium battery 5 overheats and expands, it will expand outward, separating the conductive connector 612 from the conductive socket 622, forming a short circuit, and disconnecting the external power supply, thereby protecting the lithium battery 5 from overcharge. The anti-overcharge protection structure is more streamlined, and the overall lithium battery 5 group reduces cost and failure rate, and improves reliability.

[0039] In another embodiment of the present invention, the conductive connector 612 of the anti-overcharge lithium-ion power battery includes a connector body 613 and a conductive plug 614. The first electrical conductor 611 passes through the connector body 613 and is electrically connected to the conductive plug 614. Two conductive plugs 614 are provided and are both fixedly connected to the connector body 613.

[0040] In another embodiment of the present invention, the conductive socket 622 of the anti-overcharge lithium-ion power battery includes a socket body 623 and a conductive socket 624. The second electrical conductor 621 passes through the socket body 623 and is electrically connected to the conductive socket 624. The conductive socket 624 matches the conductive plug 614, and the conductive plug 614 is plugged into the conductive socket 624.

[0041] In another embodiment of the present invention, the heat conducting plate 1 of the overcharge prevention lithium-ion power battery is made of copper and is provided with a heat conducting hole 11. The heat conducting hole 11 is provided on one side of the lithium battery 5. There are multiple heat conducting holes 11, which are evenly distributed on the heat conducting plate 1. The provision of multiple heat conducting holes 11 improves heat dissipation efficiency.

[0042] In another embodiment of the present invention, the heat dissipation plate 2 of the overcharge-proof lithium-ion power battery is provided with a heat dissipation hole 21, which is arranged on one side of the lithium battery 5. A heat dissipation fan 3 is arranged in the heat dissipation hole 21. The heat dissipation fan 3 accelerates the airflow and exchanges heat with the outside air through the heat dissipation hole 21, thereby improving the heat dissipation efficiency.

[0043] In another embodiment of the present invention, the battery frame 4 of the overcharge-proof lithium-ion power battery is provided with ventilation holes 41. The ventilation holes 41 are arranged on one side of the heat dissipation holes 21. The heat conduction holes 11 and the ventilation holes 41 are arranged to overlap. The number of ventilation holes 41 and the heat conduction holes 11 are the same and are evenly distributed on the battery frame 4. The provision of multiple ventilation holes 41 improves heat dissipation efficiency.

[0044] In another embodiment of the present invention, the overcharge prevention lithium-ion power battery is provided with a plurality of lithium batteries 5, and adjacent lithium batteries 5 are arranged in parallel and spaced apart to ensure that the lithium batteries 5 have space for heat dissipation and accelerate heat dissipation.

[0045] In another embodiment of the present invention, the battery frame 4 of the anti-overcharge lithium-ion power battery is provided with multiple, and multiple lithium batteries 5 are fixedly installed in the battery frame 4. The battery frame 4 is provided with a battery positioning hole 42, and the lithium batteries 5 are fixedly installed in the battery positioning hole 42.

[0046] The anti-overcharge lithium-ion power battery provided in the present application, the heat conducting plate 1, the heat dissipation plate 2 and the cooling fan 3 accelerate the heat dissipation of the lithium battery 5, reduce the temperature of the lithium battery 5, prevent the lithium battery 5 from overheating and expanding, and improve safety. The first charging circuit 61 and the second charging circuit 62 form an anti-overcharge protection structure. When the lithium battery 5 overheats and expands, it will expand outward, separating the conductive connector 612 from the conductive socket 622, forming a short circuit, and disconnecting the external power supply, thereby protecting the lithium battery 5 from overcharge. The anti-overcharge protection structure is more streamlined, and the overall lithium battery 5 group reduces cost and failure rate, and improves reliability.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An anti-overcharge lithium-ion power battery, characterized in that: It includes a heat conducting plate, a heat dissipation plate, a heat dissipation fan, a battery frame, a lithium battery and an overcharge protection component. The heat conducting plate is arranged on one side of the lithium battery and connected to the lithium battery. The heat dissipation plate is arranged on one side of the battery frame and connected to the battery frame. The heat dissipation fan is arranged on one side of the lithium battery and connected to the heat dissipation plate. The lithium battery is installed in the battery frame. The anti-overcharge protection component includes a first charging circuit and a second charging circuit, the first charging circuit and the second charging circuit are electrically connected to an external power supply, the first charging circuit and the second charging circuit are both arranged on the lithium battery, and the first charging circuit and the second charging circuit are detachably connected; the first charging circuit includes a first electrical conductor and a conductive connector, the first electrical conductor is fixedly wound around the lithium battery and electrically connected to the conductive connector; the second charging circuit includes a second electrical conductor and a conductive socket, the second electrical conductor is fixedly wound around the lithium battery and electrically connected to the conductive socket, and the conductive connector is arranged on one side of the conductive socket and plugged into the conductive socket.

2. The overcharge-proof lithium-ion power battery according to claim 1, characterized in that: The conductive connector includes a connector body and a conductive plug. The first electrical conductor passes through the connector body and is electrically connected to the conductive plug. Two conductive plugs are provided and are both fixedly connected to the connector body.

3. The overcharge-proof lithium-ion power battery according to claim 2, characterized in that: The conductive socket includes a socket body and a conductive socket. The second electrical wire passes through the socket body and is electrically connected to the conductive socket. The conductive socket matches the conductive plug, and the conductive plug is plugged into the conductive socket.

4. The overcharge-proof lithium-ion power battery according to claim 1, characterized in that: The heat conducting plate is made of copper and is provided with heat conducting holes on one side of the lithium battery. There are a plurality of heat conducting holes, which are evenly distributed on the heat conducting plate.

5. The overcharge-proof lithium-ion power battery according to claim 4, characterized in that: The heat dissipation plate is provided with a heat dissipation hole, the heat dissipation hole is arranged on one side of the lithium battery, and the heat dissipation fan is arranged in the heat dissipation hole.

6. The overcharge-proof lithium-ion power battery according to claim 5, characterized in that: The battery frame is provided with ventilation holes, which are arranged on one side of the heat dissipation holes. The heat conduction holes and the ventilation holes are arranged in overlapping arrangement. The number of the ventilation holes and the heat conduction holes is the same and they are evenly arranged on the battery frame.

7. The overcharge-proof lithium-ion power battery according to claim 1, characterized in that: There are multiple lithium batteries, and adjacent lithium batteries are arranged in parallel and at intervals.

8. The overcharge-proof lithium-ion power battery according to claim 7, characterized in that: The battery frame is provided with a plurality of lithium batteries, and the plurality of lithium batteries are fixedly installed in the battery frame; the battery frame is provided with a battery positioning hole, and the lithium batteries are fixedly installed in the battery positioning hole.

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