Lithium battery energy storage early warning device

Abstract

The utility model relates to the technical field of battery early warning devices, in particular to a lithium battery energy storage early warning device which comprises a shell, a lithium battery is arranged in the shell in a matched mode, and a power connection assembly is arranged at the position, corresponding to a contact of the lithium battery 20, of the shell. The power connection assembly comprises a movably-arranged center rod and a moving assembly driving the center rod to move, a comparator used for detecting the voltage of the power connection assembly is arranged in the shell, a single-chip microcomputer is arranged in the shell, and the comparator and the power connection assembly are both electrically connected with the single-chip microcomputer; the voltage of the power connection assembly is detected through the comparator, and the center rod is quickly separated from the contact when abnormity occurs, so that accidents are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of battery warning devices, and particularly relates to a lithium battery energy storage warning device. Background Art

[0002] Compared with traditional lead-acid batteries, lithium batteries have obvious advantages. They have a higher energy ratio, longer service life, higher rated voltage, lower self-discharge rate, and are also lighter in weight, more energy-saving and environmentally friendly. These advantages have made lithium batteries widely used in all corners of life. However, current lithium batteries still have potential safety hazards. In recent years when lithium batteries are in use, there have often been reports of lithium batteries exploding during charging. The reasons for lithium battery explosions can be roughly divided into three types: external short circuit, internal short circuit, and overcharging of the battery. The direct cause of the explosion is that the battery short circuit leads to an increase in internal temperature, the electrolyte in the battery is heated and vaporized, causing the battery to expand and then explode. In some cases, the electrolyte even catches fire, resulting in serious safety accidents.

[0003] A charger internal high-temperature warning device with the publication number CN216846569U discloses a charger body. A charging wire is electrically connected to the left side of the charger body, and a power-on wire a is electrically connected to the right side of the charger body. A power-on wire b is placed on the right side of the power-on wire a. Conductive sheets are fixedly installed at the right end of the power-on wire a and the left end of the power-on wire b. A protective cover is provided outside the power-on wire a and the power-on wire b. It discloses a method of judging whether there is an abnormality through temperature, but it cannot effectively warn of abnormal situations and cannot give good early warnings. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is: during the process of detecting the battery, the problem that abnormal situations cannot be predicted in advance.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions:

[0006] First, a lithium battery energy storage warning device is provided, including a housing. A lithium battery is disposed in the housing in a matching manner. An electricity connection component is provided at a position of the housing corresponding to the contact of the lithium battery. The electricity connection component includes a centrally disposed rod movably arranged and a moving component for driving the centrally disposed rod to move. A comparator for detecting the voltage of the electricity connection component is provided in the housing, and a single-chip microcomputer is provided in the housing. Both the comparator and the electricity connection component are electrically connected to the single-chip microcomputer.

[0007] Further, the electricity connection component includes a sleeve, and the centrally disposed rod and the moving component are installed in the sleeve.

[0008] Further, the moving component includes an electromagnet fixedly arranged, and an adsorption plate capable of being attracted by the electromagnet is arranged on the central rod.

[0009] Further, a return spring is arranged between the central rod and the sleeve.

[0010] Further, a first baffle is sleeved on the central rod, a second baffle is arranged in the sleeve, and a return spring is connected between the first baffle and the second baffle.

[0011] Further, a contact block cooperating with the contact point is arranged at the outer end of the central rod.

[0012] Further, the power connection component includes a power connection column fixedly arranged and connected to the outside, and the central rod is electrically connected to the power connection column.

[0013] Further, a buzzer is arranged on the outer shell, and the buzzer is electrically connected to the single-chip microcomputer.

[0014] The utility model has the following beneficial effects: The utility model detects the voltage of the power connection component through a comparator. When an abnormality occurs, the power connection component can be separated from the contact point in time, detecting the abnormality before an accident occurs, effectively avoiding the occurrence of an accident. At the same time, the arrangement of the electromagnet and the return spring enables the central rod to be separated from and contact the contact point flexibly, ensuring the stable operation of the device. At the same time, the buzzer can also give an alarm to remind the user, improving the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0016] Figure 1 is a schematic three-dimensional structure diagram of this embodiment;

[0017] Figure 2 is a cross-sectional view of this embodiment;

[0018] Figure 3 is a schematic structure diagram of the power connection component of this embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to better explain the present utility model for easy understanding, the following will make a detailed description of the present utility model through specific embodiments in conjunction with the drawings.

[0020] It should be noted that all the directional indications in the embodiments of the present utility model are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture. If this specific posture changes, the directional indication will also change accordingly.

[0021] In addition, in the present utility model, descriptions such as "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0022] In the present utility model, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] The present utility model provides a lithium battery energy storage warning device, as Figure 1 and Figure 2 shown, which includes a housing 10. A lithium battery 20 is fitted and installed inside the housing 10. One end of the lithium battery 20 is provided with a contact 21, and a power connection component 30 is provided at a position corresponding to the contact 21 on the housing 10. When the power connection component 30 contacts the contact 21, the power connection component 30 is connected to the contact 21, and when the power connection component 30 is separated from the contact 21, power is cut off; a comparator 11 is arranged inside the housing 10, and the comparator 11 is used to detect the voltage between the power connection components 30. When the comparator 11 detects that the voltage of the power connection components 30 is abnormal, at this time the power connection component 30 is separated from the contact 21, thereby avoiding accidents.

[0024] Specifically, in order to make the device operate more stably, a single-chip microcomputer 12 is arranged inside the housing 10. The power connection component 30 and the comparator 11 are both electrically connected to the single-chip microcomputer 12. When the comparator 11 detects an abnormal voltage, at this time a signal is transmitted to the single-chip microcomputer 12, and then the single-chip microcomputer 12 controls the power connection component 30 to be separated from the contact 21.

[0025] To better remind the user, a buzzer 13 is provided on the outer shell 10. The buzzer 13 is electrically connected to the single-chip microcomputer 12. When a voltage abnormality occurs, the single-chip microcomputer 12 also controls the buzzer 13 to work, reminding the user through sound. Correspondingly, some warning lights can also be set. The warning lights are electrically connected to the single-chip microcomputer 12, and the user can also be reminded by the flashing of the warning lights.

[0026] As Figure 3 shown, to enable the power connection component 30 to smoothly contact and separate from the contact point 21, the power connection component 30 includes a sleeve 31 fixed on the outer shell 10. A central rod 32 is fitted inside the sleeve 31. A first baffle 33 is sleeved on the central rod 32. The outer side of the first baffle 33 contacts the inner side of the sleeve 31, enabling the central rod 32 to move along the axial direction of the sleeve 31. A contact block 34 that contacts the contact point 21 is installed at the outer end of the central rod 32.

[0027] When the central rod 32 moves into the sleeve 31, the contact block 34 separates from the contact point 21 at this time. When the central rod 32 moves outwards, the contact block 34 contacts the contact point 21 to realize the connection between the central rod 32 and the contact point 21. An electric connection post 35 is provided at the outer end of the sleeve 31. The electric connection post 35 is electrically connected to the central rod 32. The electric connection post 35 is used to connect to an external power source or electrical appliance. When the electric connection post 35 is connected to the power source, the lithium battery 20 can be charged at this time. When the electric connection post 35 is connected to the electrical appliance, the lithium battery 20 serves as a power source to supply power.

[0028] To be able to control the movement of the central rod 32, an electromagnet 36 is provided inside the sleeve 31. An adsorption plate 37 is sleeved between the first baffle 33 and the electromagnet 36 on the central rod 32. When the electromagnet 36 is energized, it can attract the adsorption plate 37 to approach. Therefore, when the electromagnet 36 is energized, the adsorption plate 37 approaches the electromagnet 36 at this time, causing the central rod 32 to move.

[0029] Furthermore, a second baffle 38 is provided inside the sleeve 31 between the adsorption plate 37 and the first baffle 33. A return spring 39 is provided between the second baffle 38 and the first baffle 33. Therefore, when the electromagnet 36 is de-energized, the return spring 39 pulls the first baffle 33 to move at this time, thereby driving the central rod 31 to move, making the central rod 31 move to the original position.

[0030] In this embodiment, when the electromagnet 36 is energized, the central rod 32 moves into the sleeve 31, and the return spring 39 is compressed, realizing the separation of the contact block 34 from the contact point 21. When the electromagnet 36 is de-energized, the return spring 39 pushes the central rod 31 outwards at this time, so that the contact block 35 contacts the contact point 21 again, realizing the connection.

[0031] During the use of this device, it is connected through the power connection post 35 and is simultaneously connected to the central rod 12. The return spring 39 pushes the first baffle 33 to make the contact block 34 contact the contact point 21. The comparator 12 can monitor the circuit voltage. When an abnormality occurs, the single-chip microcomputer 12 controls the electromagnet 36 to be energized to attract the adsorption plate 37. At this time, the contact block 34 is separated from the contact point 21, and the buzzer 13 gives an alarm.

[0032] It should be understood that the description of the specific embodiments of the present invention above is only for explaining the technical route and features of the present invention, and its purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. However, the present invention is not limited to the above specific embodiments. Any changes or modifications made within the scope of the claims of the present invention should be covered by the protection scope of the present invention.

Claims

1. A lithium battery energy storage early warning device, characterized in that: The invention comprises a housing (10), wherein a lithium battery (20) is arranged in the housing (10), wherein a power connection component (30) is arranged at a position of the housing (10) corresponding to a contact point (21) of the lithium battery (20), wherein the power connection component (30) comprises a movable central rod (32) and a moving component for driving the central rod (32) to move, wherein a comparator (11) for detecting a voltage of the power connection component (30) is arranged in the housing (10), wherein a single-chip microcomputer (12) is arranged in the housing (10), and wherein the comparator (11) and the power connection component (30) are both electrically connected to the single-chip microcomputer (12).

2. A lithium battery energy storage early warning device according to claim 1, characterized in that: The power connection assembly (30) comprises a sleeve (31), in which a central rod (32) and a moving assembly are installed.

3. A lithium battery energy storage early warning device according to claim 1, characterized in that: The moving assembly comprises a fixedly arranged electromagnet (36), and an adsorption plate (37) capable of being attracted by the electromagnet (36) is arranged on the central rod (32).

4. A lithium battery energy storage early warning device according to claim 2, characterized in that: A return spring (39) is arranged between the central rod (32) and the sleeve (31).

5. A lithium battery energy storage early warning device according to claim 4, characterized in that: A first baffle (33) is sleeved on the central rod (32), a second baffle (38) is arranged in the sleeve (31), and a return spring (39) is connected between the first baffle (33) and the second baffle (38).

6. A lithium battery energy storage early warning device according to claim 1, characterized in that: The outer end of the central rod (32) is provided with a contact block (34) that cooperates with the contact point (21).

7. A lithium battery energy storage early warning device according to claim 1, characterized in that: The power connection assembly (30) comprises a power connection post (35) fixedly provided with the power connection post connected to the outside, and the central rod (32) is electrically connected to the power connection post (35).

8. A lithium battery energy storage early warning device according to claim 1, characterized in that: A buzzer (13) is provided on the housing, and the buzzer (13) is electrically connected to the single chip computer (12).

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