Battery pack protection system

Abstract

The utility model relates to the technical field of battery equipment, in particular to a battery pack protection system, which mainly comprises a circuit breaker, a first positive and negative pole connecting group and a second positive and negative pole connecting group, and the first positive and negative pole connecting group and the second positive and negative pole connecting group are connected through a connection assembly. A power device is arranged at the bottom of the connection assembly and used for driving the connection assembly to move up and down. By means of the device, when the battery pack is subjected to abnormal current, physical connection can be disconnected while power supply is disconnected, and possible dangers are reduced as much as possible.

Description

Technical Field

[0001] The utility model relates to the technical field of battery equipment, and particularly to a battery pack protection system. Background Technique

[0002] Lithium batteries have been widely used in various electronic devices and vehicles due to their advantages such as high energy density, light weight, and long service life. At the same time, lithium batteries are increasingly widely used in various fields, gradually replacing traditional nickel-cadmium batteries and nickel-metal hydride batteries, and becoming one of the most mainstream battery technologies currently.

[0003] In the existing lithium battery protection system, a conventional overvoltage protection circuit is generally adopted, that is, when the voltage or current in the circuit is detected to be abnormal, the power supply of the entire circuit is disconnected in time. However, the physical connection is not disconnected, and there is still a certain potential danger. Content of the Utility Model

[0004] The purpose of the utility model is to provide a battery pack protection system to solve the problem that when the circuit is abnormal, the power supply is disconnected but the physical connection is not disconnected in the prior art.

[0005] The embodiments of the utility model are realized by the following technical solutions:

[0006] A battery pack protection system includes a housing for preventing the battery and a protection device disposed on the housing;

[0007] The protection device includes a circuit breaker, a first positive and negative connection group, and a second positive and negative connection group. The first positive and negative connection group and the second positive and negative connection group are connected to the inside of the housing through a first insulating component. The first positive and negative connection group is used to connect to the positive and negative electrodes of the battery, and the second positive and negative connection group is disposed through the housing for connecting to the positive and negative electrodes of the electrical appliance;

[0008] The first positive and negative connection group and the second positive and negative connection group are connected through a connecting component. A power device is disposed at the bottom of the connecting component, and the power device is used to drive the connecting component to move up and down;

[0009] The power device and the circuit breaker are both connected to the first positive and negative connection group, and the circuit breaker is disposed between the power device and the battery connection end of the first positive and negative connection group.

[0010] In an embodiment of the utility model, the circuit breaker is an electronic control circuit breaker, and further includes a temperature sensor and a processing unit. The temperature sensor is electrically connected to the processing unit, and the processing unit is electrically connected to the circuit breaker.

[0011] In an embodiment of the present utility model, both the first positive and negative connection group and the second positive and negative connection group include a first conductive component and an insulating housing disposed outside the first conductive component.

[0012] In an embodiment of the present utility model, the connection component includes a second conductive component and a second insulating component. One end of the second insulating component is connected to the second conductive component, and the other end is connected to the power device.

[0013] In an embodiment of the present utility model, the power device includes an electromagnet, a magnet, and a slideway. The electromagnet is disposed at the bottom of the slideway, the slideway is disposed inside the outer housing, the magnet is disposed at the bottom of the second insulating component, and the magnet moves within the slideway.

[0014] In an embodiment of the present utility model, a right-angle frame and a clamping device disposed vertically adjacent to each other are further disposed inside the outer housing.

[0015] In an embodiment of the present utility model, the clamping device includes a fixing plate and a clamping plate connected to the fixing plate through a spring.

[0016] The technical solution of the embodiment of the present utility model has at least the following advantages and beneficial effects:

[0017] Adopting the solution provided by the present utility model mainly includes a circuit breaker, a first positive and negative connection group, and a second positive and negative connection group. The first positive and negative connection group and the second positive and negative connection group are connected through a connection component. A power device is disposed at the bottom of the connection component, and the power device is used to drive the connection component to move up and down. Through the above device, when the battery pack receives abnormal current, while disconnecting the power supply, it can also disconnect the physical connection, thereby reducing the possible risks as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 It is a schematic top view structure of the present utility model;

[0021] Figure 3 It is a schematic circuit connection diagram of the circuit breaker and the electromagnet of the present utility model.

[0022] Icon: 1 - outer housing, 2 - right-angled frame, 3 - first positive and negative connection group, 4 - fixing plate, 5 - first insulating component, 6 - second conductive component, 7 - second positive and negative connection group, 8 - second insulating component, 9 - magnet, 10 - electromagnet, 11 - spring, 12 - clamping plate, 13 - circuit breaker, 14 - temperature sensor, 15 - processing unit. Detailed implementation manners

[0023] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0024] Please refer to Figures 1 - 3 , a battery pack protection system, including an outer housing 1 for preventing the battery and a protection device disposed on the outer housing 1;

[0025] The protection device includes a circuit breaker 13, a first positive and negative connection group 3 and a second positive and negative connection group 7. The first positive and negative connection group 3 and the second positive and negative connection group 7 are connected to the inside of the outer housing 1 through a first insulating component 5. The first positive and negative connection group 3 is used to connect to the positive and negative poles of the battery, and the second positive and negative connection group 7 is disposed through the outer housing 1 for connecting to the positive and negative poles of the electrical appliance;

[0026] In this embodiment, both the first positive and negative connection group 3 and the second positive and negative connection group 7 include a first conductive component and an insulating housing disposed outside the first conductive component.

[0027] Among them, each first conductive component is composed of a positive connection column and a negative connection column for normal line power supply. The insulating housing disposed outside the first conductive component can avoid unnecessary short circuits caused by contact with other objects.

[0028] The first positive and negative connection group 3 and the second positive and negative connection group 7 are connected through a connecting component. A power device is disposed at the bottom of the connecting component, and the power device is used to drive the connecting component to move up and down;

[0029] The power device and the circuit breaker 13 are both connected to the first positive and negative connection group 3, and the circuit breaker 13 is disposed between the power device and the battery connection end of the first positive and negative connection group 3.

[0030] Specifically, the circuit breaker 13 is connected to the positive or negative pole of the first positive and negative connection group 3. The power supply of the power device is simultaneously connected to the positive and negative poles of the first positive and negative connection group 3, and must be located at a position after the current passes through the circuit breaker 13.

[0031] It should be noted that the above connection method is only an example, and any connection that can enable the circuit breaker 13 to control the power supply of the power device conforms to the present utility model.

[0032] The solution provided by the present utility model mainly includes a circuit breaker 13, a first positive and negative connection group 3, and a second positive and negative connection group 7. The first positive and negative connection group 3 and the second positive and negative connection group 7 are connected through a connection component. A power device is arranged at the bottom of the connection component, and the power device is used to drive the connection component to move up and down. During use, the circuit breaker 13 is in a normal open state. When the power device is powered on, the connection component is lifted between the first positive and negative connection group 3 and the second positive and negative connection group 7, enabling the entire battery pack to supply power externally normally. When an abnormal current occurs, the circuit breaker 13 disconnects the circuit. On the one hand, it can cut off the entire power supply, and on the other hand, the power device loses power supply, and the connection component loses the power to lift, so it drops, disconnecting the connection between the first positive and negative connection group 3 and the second positive and negative connection group 7. Through the above device, when the battery pack is subjected to an abnormal current, the power supply can be disconnected while the physical connection can also be disconnected, minimizing the possible risks.

[0033] In an exemplary embodiment of the present utility model, the circuit breaker 13 is an electrically controlled circuit breaker, and further includes a temperature sensor 14 and a processing unit 15. The temperature sensor 14 is electrically connected to the processing unit 15, and the processing unit 15 is electrically connected to the circuit breaker 13.

[0034] In this embodiment, the temperature sensor 14 can collect the temperature inside the outer casing 1, and a temperature threshold is set in the processing unit 15. When the temperature exceeds the temperature threshold, the processing unit 15 can send an instruction to disconnect the power supply to the electrically controlled circuit breaker to achieve the purpose of protecting the battery.

[0035] Among them, the model of the electrically controlled circuit breaker is: RS485; the model of the processing unit 15 is: GCAN-PLC.

[0036] In an exemplary embodiment of the present utility model, the connection component includes a second conductive component 6 and a second insulating component 8. One end of the second insulating component 8 is connected to the second conductive component 6, and the other end is connected to the power device.

[0037] Among them, the second conductive component 6 is a conical metal head, and inclined surfaces that fit the second conductive component 6 are respectively provided on both sides of the first conductive component. The conical shape can make the first conductive component and the second conductive component 6 fit tightly on the one hand.

[0038] An exemplary embodiment of the present utility model, the power device includes an electromagnet 10, a magnet 9 and a slideway. The electromagnet 10 is arranged at the bottom of the slideway, the slideway is arranged in the outer housing 1, and the magnet 9 is arranged at the bottom of the second insulating component 8 and moves within the slideway.

[0039] When in use, after the electromagnet 10 is energized, the magnetic pole of the electromagnet 10 in the upward direction is obtained, and the side of the magnet 9 that is the same as the magnetic pole of the electromagnet 10 in the upward direction is arranged downward.

[0040] After the electromagnet 10 is energized, under the action of the magnet 9, the second insulating component 8 lifts the second conductive component 6. At the same time, a current control device can also be set to control the current required to pass through the electromagnet 10 according to the distance to be lifted.

[0041] Secondly, it should be noted that the electromagnet 10 used in this solution consumes less power. In the environment where this solution is used, even when the battery of the lithium battery can no longer supply power to the electrical appliance normally, the remaining power of the lithium battery is still sufficient to supply power to the electromagnet 10 normally.

[0042] An exemplary embodiment of the present utility model, a right-angle frame 2 and a clamping device arranged vertically adjacent are further arranged in the outer housing 1. Specifically, the clamping device includes a fixing plate 4 and a clamping plate 12 connected to the fixing plate 4 through a spring 11.

[0043] Place the battery in the right-angle frame 2, and push the clamping plate 12 through the spring 11 to press the battery tightly. Of course, other methods can also be used to fix the battery, not limited to the above method.

[0044] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A battery pack protection system, characterized in that, It includes a housing body (1) for preventing a battery and a protection device arranged on the housing body (1); The protection device includes a circuit breaker (13), a first positive and negative connection group (3) and a second positive and negative connection group (7). The first positive and negative connection group (3) and the second positive and negative connection group (7) are connected to the inside of the housing body (1) through a first insulating component (5). The first positive and negative connection group (3) is used to connect to the positive and negative electrodes of the battery, and the second positive and negative connection group (7) is arranged through the housing body (1) and is used to connect to the positive and negative electrodes of an electrical appliance; The first positive and negative connection group (3) and the second positive and negative connection group (7) are connected by a connecting component. A power device is arranged at the bottom of the connecting component, and the power device is used to drive the connecting component to move up and down; Both the power device and the circuit breaker (13) are connected to the first positive and negative connection group (3), and the circuit breaker (13) is arranged between the power device and the battery connection end of the first positive and negative connection group (3).

2. The battery pack protection system according to claim 1, wherein The circuit breaker (13) is an electronically controlled circuit breaker, and further includes a temperature sensor (14) and a processing unit (15). The temperature sensor (14) is electrically connected to the processing unit (15), and the processing unit (15) is electrically connected to the circuit breaker (13).

3. A battery pack protection system according to claim 1, characterized in that, Both the first positive and negative connection group (3) and the second positive and negative connection group (7) include a first conductive component and an insulating housing arranged outside the first conductive component.

4. A battery pack protection system according to claim 1, wherein The connecting component includes a second conductive component (6) and a second insulating component (8). One end of the second insulating component (8) is connected to the second conductive component (6), and the other end is connected to the power device.

5. The battery pack protection system according to claim 4, characterized in that, The power device includes an electromagnet (10), a magnet (9) and a slideway. The electromagnet (10) is arranged at the bottom of the slideway. The slideway is arranged inside the housing body (1). The magnet (9) is arranged at the bottom of the second insulating component (8), and the magnet (9) moves inside the slideway.

6. The battery pack protection system according to claim 1, characterized in that, A right-angle frame (2) and a clamping device arranged vertically adjacent to each other are also arranged inside the housing body (1).

7. A battery pack protection system according to claim 6, characterized in that, The clamping device includes a fixing plate (4) and a clamping plate (12) connected to the fixing plate (4) through a spring (11).

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