Lithium battery pack capable of improving safety

Abstract

The utility model belongs to the technical field of batteries, and particularly relates to a lithium battery pack capable of improving safety, which comprises a heat conduction plate, a heat dissipation plate, a heat dissipation fan, a battery frame, a lithium battery, an anti-overcharge protection component and an alarm component. The anti-overcharge protection assembly comprises a first charging loop and a second charging loop. The first charging loop includes a first electrical wire and a conductive contact. The second charging loop includes a second electrical wire and a conductive socket. The alarm assembly comprises a temperature sensor and an alarm. According to the lithium battery pack capable of improving the safety, the first charging loop and the second charging loop form an anti-overcharge protection structure, when the lithium battery expands due to overheat, the lithium battery expands outwards, the conductive connector is separated from the conductive socket, an open circuit is formed, and an external power supply is cut off, so that anti-overcharge protection is performed on the lithium battery, and the safety of the lithium battery pack is improved. The temperature sensor is arranged to monitor the temperature of the lithium battery in real time, and when the temperature reaches a set value, the alarm gives an alarm, so that the safety is improved.

Description

Technical Field

[0001] This utility model belongs to the field of battery technology, and in particular relates to a lithium battery pack with improved safety. Background Technology

[0002] During lithium battery charging, the continuous charging causes heat to rise, leading to battery expansion. If heat is not dissipated in time, the battery will continue to heat up and expand, potentially causing safety hazards. Current technology uses integrated circuits (ICs) for electronic control and overcharge protection. However, multiple ICs are needed in a lithium battery pack for overcharge protection, resulting in a complex overcharge protection structure, high overall cost, high failure rate, and low reliability. Furthermore, if the battery's temperature rise is not detected and addressed promptly, it can easily lead to safety hazards and reduce overall safety. Utility Model Content

[0003] The purpose of this invention is to provide a lithium battery pack with improved safety, aiming to solve the technical problems of high cost, high failure rate, low reliability, easy to cause safety hazards and reduce safety in existing lithium battery packs.

[0004] To achieve the above objectives, the present invention provides a lithium battery pack with improved safety, comprising a heat-conducting plate, a heat dissipation plate, a cooling fan, a battery frame, a lithium battery, an overcharge protection component, and an alarm component. The heat-conducting plate is disposed on one side of the lithium battery and connected to the lithium battery. The heat dissipation plate is disposed on one side of the battery frame and connected to the battery frame. The cooling fan is disposed on one side of the lithium battery and connected to the heat dissipation plate. The lithium battery is mounted on the battery frame. The alarm component is connected to both the lithium battery and the battery frame.

[0005] The overcharge protection component includes a first charging circuit and a second charging circuit, both of which are electrically connected to an external power source. Both the first and second charging circuits are located within the lithium battery, and the first and second charging circuits are detachably connected. The first charging circuit includes a first electrical wire and a conductive connector. The first electrical wire is fixedly wound around the lithium battery and electrically connected to the conductive connector. The second charging circuit includes a second electrical wire and a conductive socket. The second electrical wire is fixedly wound around the lithium battery and electrically connected to the conductive socket. The conductive connector is located on one side of the conductive socket and is inserted into it.

[0006] The alarm component includes a temperature sensor and an alarm. The temperature sensor is connected to the heat-conducting plate and electrically connected to the lithium battery and the alarm, respectively. The alarm is connected to the heat sink and electrically connected to the lithium battery.

[0007] As an optional embodiment of this utility model, the conductive connector includes a connector body and conductive inserts. The first conductor passes through the connector body and is electrically connected to the conductive inserts. There are two conductive inserts, both of which are fixedly connected to the connector body.

[0008] As an optional embodiment of this utility model, the conductive socket includes a socket body and a conductive socket, the second electrical conductor passes through the socket body and is electrically connected to the conductive socket, the conductive socket matches the conductive insert, and the conductive insert is plugged into the conductive socket.

[0009] As an optional solution of this utility model, the heat-conducting plate is made of copper, and the heat-conducting plate is provided with heat-conducting holes. The heat-conducting holes are located on one side of the lithium battery, and there are multiple heat-conducting holes, which are evenly distributed on the heat-conducting plate.

[0010] As an optional solution of this utility model, the heat sink plate is provided with heat dissipation holes, the heat dissipation holes are located on one side of the lithium battery, and the cooling fan is located inside the heat dissipation holes.

[0011] As an optional solution of this utility model, the battery frame is provided with ventilation holes, which are located on one side of the heat dissipation holes. The heat conduction holes and ventilation holes are arranged overlappingly, and the number of ventilation holes and heat conduction holes is the same, and they are evenly arranged on the battery frame.

[0012] As an optional solution of this utility model, multiple lithium batteries are provided, and adjacent lithium batteries are arranged in parallel and spaced apart.

[0013] As an optional solution of this utility model, the battery frame is provided with multiple batteries, and multiple lithium batteries are fixedly installed in the battery frame; the battery frame is provided with battery positioning holes, and the lithium batteries are fixedly installed in the battery positioning holes.

[0014] As an optional solution of this utility model, the heat-conducting plate is provided in multiple ways and is uniformly fixedly connected to multiple lithium batteries, and each heat-conducting plate is fixedly connected to a temperature sensor.

[0015] The above-mentioned technical solutions for improving the safety of the lithium battery pack provided in this embodiment of the utility model have at least one of the following technical effects:

[0016] The lithium battery pack with improved safety provided in this application includes a heat-conducting plate, a heat sink, a cooling fan, a battery frame, a lithium battery, an overcharge protection component, and an alarm component. The heat-conducting plate, heat sink, and cooling fan accelerate the heat dissipation of the lithium battery, reduce the lithium battery temperature, prevent the lithium battery from overheating and expanding, and improve safety. The first charging circuit and the second charging circuit form an overcharge protection structure. When the lithium battery overheats and expands, it will expand outward, separating the conductive connector from the conductive socket, forming an open circuit, disconnecting the external power supply, thereby protecting the lithium battery from overcharge. The overcharge protection structure is more streamlined, reducing the overall cost and failure rate of the lithium battery pack, and improving reliability. By setting a temperature sensor to monitor the lithium battery temperature in real time, when the temperature reaches the set value, an alarm will sound, which has an effective reminder function, allowing for timely detection and attention, reducing the risk of safety hazards, and improving safety. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A perspective view of a lithium battery pack for improving safety, provided as an embodiment of this utility model.

[0019] Figure 2 A perspective view of a lithium battery and an overcharge protection component for a lithium battery pack that improves safety, provided in an embodiment of this utility model.

[0020] Figure 3 A side view of the lithium battery and overcharge protection component of the lithium battery pack for improving safety provided in this embodiment of the utility model.

[0021] Figure 4 A schematic diagram of the structure of the heat-conducting plate for improving the safety of a lithium battery pack provided in an embodiment of this utility model.

[0022] Figure 5 This is a schematic diagram of the battery frame structure of a lithium battery pack that improves safety, provided as an embodiment of the present invention.

[0023] Figure 6 This is a magnified view of part A in 2.

[0024] The following are the labeling elements in the figure:

[0025] 1. Heat-conducting plate; 2. Heat sink; 3. Cooling fan; 4. Battery frame; 5. Lithium battery; 6. Overcharge protection component; 7. Alarm component;

[0026] 11. Heat conduction holes;

[0027] 21. Heat dissipation holes;

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

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

[0030] 71. Temperature sensor; 72. Alarm;

[0031] 611. First electrical conductor; 612. Conductive connector; 613. Connector body; 614. Conductive insert;

[0032] 621. Second electrical conductor; 622. Conductive socket; 623. Socket body; 624. Conductive plug. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of this utility model, and should not be construed as limiting the utility model.

[0034] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0037] In one embodiment of this utility model, such as Figures 1-6 As shown, a lithium battery pack with improved safety is provided, including a heat-conducting plate 1, a heat sink 2, a cooling fan 3, a battery frame 4, a lithium battery 5, an overcharge protection component 6, and an alarm component 7. The heat-conducting plate 1 is located on one side of the lithium battery 5 and is fixedly connected to it. The heat-conducting plate 1 is used to dissipate the heat generated by the lithium battery 5, improving the heat dissipation efficiency of the lithium battery 5. The heat sink 2 is located on one side of the battery frame 4 and is fixedly connected to it. The cooling fan 3 is located on one side of the lithium battery 5 and is fixedly connected to the heat sink 2. The airflow from the cooling fan 3 can quickly dissipate the heat generated by the lithium battery 5 and exchange heat with the air, thereby improving the heat dissipation efficiency. The lithium battery 5 is fixedly installed in the battery frame 4, and the alarm component 7 is connected to both the lithium battery 5 and the battery frame 4.

[0038] The overcharge protection component 6 includes a first charging circuit 61 and a second charging circuit 62. Both the first charging circuit 61 and the second charging circuit 62 are electrically connected to an external power source and are used to control the on / off state of the external power source. Both the first charging circuit 61 and the second charging circuit 62 are located within the lithium battery 5, and the first charging circuit 61 and the second charging circuit 62 are detachably connected. The first charging circuit 61 includes a first electrical wire 611 and a conductive connector 612. The first electrical wire 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 wire 621 and a conductive socket 622. The second electrical wire 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 is inserted into the conductive socket 622.

[0039] The alarm component 7 includes a temperature sensor 71 and an alarm 72. The temperature sensor 71 is fixedly connected to the heat-conducting plate 1 and electrically connected to the lithium battery 5 and the alarm 72. The alarm 72 is fixedly connected to the heat sink 2 and electrically connected to the lithium battery 5. By setting the temperature sensor 71 to monitor the temperature of the lithium battery 5 in real time, the alarm 72 will sound an alarm when the temperature reaches the set value, which has an effective reminder function.

[0040] The lithium battery pack provided in this application, which improves safety, features a heat-conducting plate 1, a heat sink 2, and a cooling fan 3 that accelerate heat dissipation from the lithium battery 5, reducing its temperature and preventing overheating and expansion, thus enhancing safety. A first charging circuit 61 and a second charging circuit 62 form an overcharge protection structure. When the lithium battery 5 overheats and expands, it expands outwards, separating the conductive connector 612 from the conductive socket 622, creating an open circuit and disconnecting the external power supply. This provides overcharge protection for the lithium battery 5. The overcharge protection structure is more streamlined, reducing the overall cost and failure rate of the lithium battery pack while improving reliability. A temperature sensor 71 monitors the temperature of the lithium battery 5 in real time. When the temperature reaches a set value, an alarm 72 sounds, providing an effective warning and allowing for timely detection and attention, preventing potential safety hazards and improving overall safety.

[0041] In another embodiment of the present invention, the conductive connector 612 includes a connector body 613 and a conductive insert 614. A first electrical wire 611 passes through the connector body 613 and is electrically connected to the conductive insert 614. Two conductive inserts 614 are provided and are both fixedly connected to the connector body 613.

[0042] In another embodiment of the present invention, the conductive socket 622 includes a socket body 623 and a conductive socket 624. A second electrical wire 621 passes through the socket body 623 and is electrically connected to the conductive socket 624. The conductive socket 624 is matched with a conductive insert 614, and the conductive insert 614 is plugged into the conductive socket 624.

[0043] In another embodiment of this utility model, the heat-conducting plate 1 is made of copper, and heat-conducting holes 11 are provided on the heat-conducting plate 1. The heat-conducting holes 11 are located on one side of the lithium battery 5, and there are multiple heat-conducting holes 11, which are evenly distributed on the heat-conducting plate 1. The heat dissipation efficiency is improved by providing multiple heat-conducting holes 11.

[0044] In another embodiment of this utility model, the heat sink 2 is provided with heat dissipation holes 21, which are located on one side of the lithium battery 5, and the cooling fan 3 is disposed within the heat dissipation holes 21. The cooling fan 3 accelerates airflow and exchanges heat with the outside air through the heat dissipation holes 21, thereby improving heat dissipation efficiency.

[0045] In another embodiment of this utility model, the battery frame 4 is provided with ventilation holes 41, which are located on one side of the heat dissipation holes 21. The heat conduction holes 11 and the ventilation holes 41 are arranged overlappingly, and the number of ventilation holes 41 and heat conduction holes 11 is the same, and they are evenly distributed on the battery frame 4. By providing multiple ventilation holes 41, the heat dissipation efficiency is improved.

[0046] In another embodiment of this invention, multiple lithium batteries 5 are provided, with adjacent lithium batteries 5 arranged in parallel and spaced apart. This ensures that the lithium batteries 5 have space for heat dissipation and accelerates heat dissipation.

[0047] In another embodiment of this utility model, the battery frame 4 is provided with multiple batteries, and multiple lithium batteries 5 are fixedly installed in the battery frame 4; the battery frame 4 is provided with battery positioning holes 42, and the lithium batteries 5 are fixedly installed in the battery positioning holes 42.

[0048] In another embodiment of this utility model, multiple heat-conducting plates 1 are provided and are uniformly fixedly connected to multiple lithium batteries 5, and a temperature sensor 71 is fixedly connected to each heat-conducting plate 1.

[0049] The lithium battery pack provided in this application, which improves safety, features a heat-conducting plate 1, a heat sink 2, and a cooling fan 3 that accelerate heat dissipation from the lithium battery 5, reducing its temperature and preventing overheating and expansion, thus enhancing safety. A first charging circuit 61 and a second charging circuit 62 form an overcharge protection structure. When the lithium battery 5 overheats and expands, it expands outwards, separating the conductive connector 612 from the conductive socket 622, creating an open circuit and disconnecting the external power supply. This provides overcharge protection for the lithium battery 5. The overcharge protection structure is more streamlined, reducing the overall cost and failure rate of the lithium battery pack while improving reliability. A temperature sensor 71 monitors the temperature of the lithium battery 5 in real time. When the temperature reaches a set value, an alarm 72 sounds, providing an effective warning and allowing for timely detection and attention, preventing potential safety hazards and improving overall safety.

[0050] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lithium battery pack with improved safety, characterized in that, The device includes a heat-conducting plate, a heat sink, a cooling fan, a battery frame, a lithium battery, an overcharge protection component, and an alarm component. The heat-conducting plate is disposed on one side of the lithium battery and connected to the lithium battery. The heat sink is disposed on one side of the battery frame and connected to the battery frame. The cooling fan is disposed on one side of the lithium battery and connected to the heat sink. The lithium battery is installed in the battery frame. The alarm component is connected to both the lithium battery and the battery frame. The overcharge protection component includes a first charging circuit and a second charging circuit, both of which are electrically connected to an external power source. Both the first and second charging circuits are located within the lithium battery, and the first and second charging circuits are detachably connected. The first charging circuit includes a first electrical wire and a conductive connector. The first electrical wire is fixedly wound around the lithium battery and electrically connected to the conductive connector. The second charging circuit includes a second electrical wire and a conductive socket. The second electrical wire is fixedly wound around the lithium battery and electrically connected to the conductive socket. The conductive connector is located on one side of the conductive socket and is inserted into it. The alarm component includes a temperature sensor and an alarm. The temperature sensor is connected to the heat-conducting plate and electrically connected to the lithium battery and the alarm, respectively. The alarm is connected to the heat sink and electrically connected to the lithium battery.

2. The lithium battery pack with improved safety according to claim 1, characterized in that, The conductive connector includes a connector body and conductive inserts. The first conductor passes through the connector body and is electrically connected to the conductive inserts. There are two conductive inserts, both of which are fixedly connected to the connector body.

3. A lithium battery pack with improved safety according to claim 2, characterized in that, The conductive socket includes a socket body and a conductive socket. The second electrical conductor passes through the socket body and is electrically connected to the conductive socket. The conductive socket matches the conductive insert, and the conductive insert is plugged into the conductive socket.

4. A lithium battery pack with improved safety according to claim 1, characterized in that, The heat-conducting plate is made of copper and has heat-conducting holes located on one side of the lithium battery. There are multiple heat-conducting holes, which are evenly distributed on the heat-conducting plate.

5. A lithium battery pack with improved safety according to claim 4, characterized in that, The heat sink plate is provided with heat dissipation holes, which are located on one side of the lithium battery, and the cooling fan is located inside the heat dissipation holes.

6. A lithium battery pack with improved safety according to claim 5, characterized in that, The battery frame is provided with ventilation holes, which are located on one side of the heat dissipation holes. The heat conduction holes and ventilation holes are arranged overlappingly, and the number of ventilation holes and heat conduction holes is the same and they are evenly distributed on the battery frame.

7. A lithium battery pack with improved safety according to claim 1, characterized in that, The lithium battery is provided in multiple units, and adjacent lithium batteries are arranged in parallel and spaced apart.

8. A lithium battery pack with improved safety according to claim 1, characterized in that, The battery frame has multiple components, and multiple lithium batteries are fixedly installed in the battery frame; the battery frame has battery positioning holes, and the lithium batteries are fixedly installed in the battery positioning holes.

9. A lithium battery pack with improved safety according to claim 1, characterized in that, The heat-conducting plates are provided in multiple ways and are uniformly fixedly connected to the multiple lithium batteries. Each heat-conducting plate is fixedly connected to a temperature sensor.

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