Protection device for charging battery of electric vehicle

Abstract

The utility model discloses a protection device for charging an electric vehicle battery, which comprises a shell provided with an input plug and an output plug; the controller is arranged in the shell, and the output plug is electrically connected with the controller; the time relay is arranged in the shell, and the input plug and the controller are electrically connected with the time relay; the current detection module is arranged in the shell and is electrically connected with the controller; and the communication module is arranged in the shell and is electrically connected with the controller. The protection device for charging the battery of the electric vehicle is connected between the charging wire of the electric vehicle and the battery of the electric vehicle, the time relay can be used for controlling the charging duration of the battery, the battery is prevented from being damaged by long-time charging, the risk of safety accidents caused by battery charging is reduced, and the current detection module can detect the magnitude of current. And when the current value exceeds the detection threshold value, the controller controls the communication module to inform a vehicle owner, so that safety accidents are avoided, and the charging safety of the battery of the electric vehicle is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of charging safety, in particular to a protection device for charging a battery of an electric vehicle. Background Art

[0002] Currently, battery technology is relatively mature, and the accident rate of traditional electric vehicles during charging is already very low. However, there are still some electric vehicles that may cause the internal temperature of the battery to rise and cause safety accidents due to factors such as excessive current in the charging cable.

[0003] Therefore the prior art still needs to be improved and enhanced. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present utility model is to provide a protection device for charging an electric vehicle battery, aiming to solve the problem in the prior art that when an electric vehicle is charging, the internal temperature of the battery rises due to factors such as excessive current in the charging line, causing safety accidents.

[0005] The technical solution adopted by the utility model to solve the technical problem is as follows:

[0006] In a first aspect, an embodiment of the utility model provides a protection device for charging an electric vehicle battery, comprising:

[0007] A housing, wherein an input plug and an output plug are provided on the housing, wherein the input plug is used to connect to a charging line of the electric vehicle, and the output plug is used to connect to a battery of the electric vehicle;

[0008] A controller, wherein the controller is disposed in the housing, and the output plug is electrically connected to the controller;

[0009] A time relay, wherein the time relay is arranged in the housing, and the input plug and the controller are electrically connected to the time relay respectively;

[0010] A current detection module, which is disposed in the housing and electrically connected to the controller;

[0011] A communication module is disposed in the housing and is electrically connected to the controller.

[0012] As a further improved technical solution, the above-mentioned electric vehicle battery charging protection device further includes:

[0013] A display screen is arranged on the outside of the shell and is electrically connected to the controller.

[0014] As a further improved technical solution, the above-mentioned electric vehicle battery charging protection device further includes:

[0015] A voltage detection module is disposed in the housing and is electrically connected to the controller.

[0016] As a further improved technical solution, the above-mentioned electric vehicle battery charging protection device further includes:

[0017] An ambient temperature sensor is arranged on the top outer side of the shell and is electrically connected to the controller.

[0018] As a further improved technical solution, the above-mentioned electric vehicle battery charging protection device further includes:

[0019] A smoke detection sensor is arranged on the top outer side of the housing and is electrically connected to the controller.

[0020] As a further improved technical solution, the above-mentioned electric vehicle battery charging protection device further includes:

[0021] A protection switch is arranged in the housing, and two ends of the protection switch are electrically connected to the controller and the output plug respectively.

[0022] As a further improved technical solution, the above-mentioned electric vehicle battery charging protection device further includes:

[0023] A first adjusting knob is disposed outside the housing and is electrically connected to the controller, and is used to adjust a current value threshold detected by the current detection module.

[0024] As a further improved technical solution, the above-mentioned electric vehicle battery charging protection device further includes:

[0025] A second adjusting knob is disposed on the outer side of the housing and is electrically connected to the controller, and is used to adjust a voltage value threshold detected by the voltage detection module.

[0026] As a further improved technical solution, the above-mentioned electric vehicle battery charging protection device further includes:

[0027] A third adjusting knob is arranged on the outside of the housing and is electrically connected to the controller, and is used for adjusting the delay time of the time relay.

[0028] Compared with the prior art, the embodiment of the utility model has the following advantages:

[0029] The utility model provides a battery charging protection device for electric vehicles, comprising: a housing, an input plug and an output plug are provided on the housing, the input plug is used to connect the charging line of the electric vehicle, and the output plug is used to connect the battery of the electric vehicle; a controller, the controller is arranged in the housing, and the output plug is electrically connected to the controller; a time relay, the time relay is arranged in the housing, and the input plug and the controller are electrically connected to the time relay respectively; a current detection module, the current detection module is arranged in the housing and electrically connected to the controller; a communication module, the communication module is arranged in the housing and electrically connected to the controller. The battery charging protection device for electric vehicles provided by the utility model is connected between the charging line of the electric vehicle and the battery of the electric vehicle, wherein the time relay can be used to control the battery charging time, avoid long-term charging to damage the battery and reduce the risk of safety accidents caused by battery charging, and the current detection module can detect the current currently input into the battery. When the current value exceeds the detection threshold, the controller controls the communication module to notify the owner, and timely sends information to notify the owner to avoid safety accidents, thereby further improving the safety of battery charging of electric vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A three-dimensional structural diagram of a protection device for charging an electric vehicle battery provided by the utility model;

[0031] Figure 2 The utility model provides a principle structure diagram of a protection device for charging an electric vehicle battery.

[0032] In the figure: 1. Shell; 2. Input plug; 3. Output plug; 4. Controller; 5. Time relay; 6. Current detection module; 7. Communication module; 8. Display screen; 9. Voltage detection module; 10. Ambient temperature sensor; 11. Smoke detection sensor; 12. Protection switch; 13. First adjustment knob; 14. Second adjustment knob; 15. Third adjustment knob. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] At present, battery technology is relatively mature, and the accident rate of traditional electric vehicles during charging is already very low. However, due to inconsistent quality control of batteries on each electric vehicle, some electric vehicles may still have internal battery temperatures rise during charging due to factors such as excessive current in the charging line, excessive voltage, too long charging time, and excessively high external ambient temperature, causing safety accidents. Therefore, the utility model provides the following embodiments to solve the above problems.

[0035] Example:

[0036] like Figure 1-Figure 2 As shown. The protection device for charging the battery of the electric vehicle comprises: a housing 1, on which an input plug 2 and an output plug 3 are arranged, the input plug 2 is used to connect the charging line of the electric vehicle, and the output plug 3 is used to connect the battery of the electric vehicle; a controller 4, the controller 4 is arranged in the housing 1, and the output plug 3 is electrically connected to the controller 4; a time relay 5, the time relay 5 is arranged in the housing 1, and the input plug 2 and the controller 4 are electrically connected to the time relay 5 respectively; a current detection module 6, the current detection module 6 is arranged in the housing 1 and electrically connected to the controller 4; a communication module 7, the communication module 7 is arranged in the housing 1 and electrically connected to the controller 4.

[0037] In this embodiment, the electric vehicle battery charging protection device includes a shell 1, an input plug 2, an output plug 3, a controller 4, a time relay 5, a current detection module 6 and a communication module 7; wherein the shell 1 includes a top cover (not shown) and a lower frame (not shown), the top cover is detachably connected to the lower frame, for example, by bolt connection or clamping, the controller 4, the time relay 5, the current detection module 6 and the communication module 7 are all arranged in the lower frame, the top cover is detachably connected to the lower frame, and it is convenient to open the top cover to inspect and replace the controller 4, the time relay 5, the current detection module 6 and the communication module 7 in the lower frame; the input plug 2 and the output plug 3 are respectively arranged on two opposite sides of the outer side of the shell 1, the input plug 2 is used to connect the charging line of the electric vehicle, and the output plug 3 is used to connect the battery of the electric vehicle, that is, the electric vehicle battery charging protection device is connected in series between the external power supply and the electric vehicle battery, the communication module 7 includes a Bluetooth module, a Wi-Fi module, an NFC module, etc., and at the same time, the controller 4, the time relay 5, the current detection module 6 and the communication module 7 are all existing devices. The input plug 2 is connected to the time relay 5, and the output plug 3, time relay 5, current detection module 6 and communication module 7 are electrically connected to the controller 4 respectively. The time relay 5 is used to control the charging time of the electric vehicle battery. For example, the time relay 5 has a preset delay time of one hour. Then, when the battery is fully charged for one hour, the electric vehicle battery charging protection device automatically cuts off the power and the battery stops charging; the current detection module 6 is used to detect the current flowing through the protection device. For example, when the detection threshold of the current detection module 6 is 2A, if the detected current value exceeds 2A, the controller 4 controls the communication module 7 to send a message to the owner to remind the owner that the current value in the current charging state exceeds the safe range value. After receiving the message, the owner can avoid risks in time by unplugging the charging cable. The electric vehicle battery charging protection device provided by the utility model is connected between the charging line of the electric vehicle and the battery of the electric vehicle, wherein the time relay 5 can be used to control the battery charging time, avoid damaging the battery due to long-term charging and reduce the risk of safety accidents caused by battery charging, and the current detection module 6 can detect the current currently input into the battery. When the current value exceeds the detection threshold, the controller 4 controls the communication module 7 to notify the owner, and by sending information to notify the owner in time, safety accidents can be avoided, thereby further improving the safety of electric vehicle battery charging.

[0038] As a further solution, the electric vehicle battery charging protection device further includes a display screen 8, which is arranged on the outside of the housing 1 and electrically connected to the controller 4. The display screen 8 can display the current value currently flowing through the electric vehicle battery charging protection device and the remaining charging time, which can serve as a reminder to the owner and facilitate the query of relevant charging information.

[0039] As a further solution, the electric vehicle battery charging protection device further includes a voltage detection module 9, which is arranged in the housing 1 and electrically connected to the controller 4. The voltage detection module 9 is used to detect the voltage value flowing through the motor vehicle battery charging protection device, and the voltage value can be displayed on the display screen 8. When the voltage value detected by the voltage detection module 9 is greater than the preset threshold, for example, when the detection threshold of the voltage detection module 9 is 48V, if the detected current value exceeds 48V, the controller 4 controls the communication module 7 to send information to the owner to remind the owner that the voltage value exceeds the safe range value in the current charging state. After receiving the information, the owner can unplug the charging cable to avoid risks in time, further improving the safety of battery charging.

[0040] In this embodiment, the protection device for charging the battery of the electric vehicle further includes an ambient temperature sensor 10, which is arranged on the top outer side of the housing 1 and electrically connected to the controller 4. The ambient temperature sensor 10 is used to detect the temperature of the current environment where the battery is located. If the temperature is too high, there is a risk of flammability during charging. When the temperature value detected by the ambient temperature sensor 10 is greater than the preset threshold, the controller 4 controls the communication module 7 to send a message to the owner to remind the owner that the ambient temperature value exceeds the safe range value in the current charging state. After receiving the message, the owner can unplug the charging cable to avoid the risk in time. The ambient temperature value detected by the ambient temperature sensor 10 can be displayed on the display screen 8, and the ambient temperature sensor 10 is an existing device.

[0041] As a further solution, the electric vehicle battery charging protection device further includes a smoke detection sensor 11, which is arranged on the top outer side of the housing 1 and electrically connected to the controller 4. The smoke detection sensor 11 is used to detect whether the current battery is burning. If the battery is burning, smoke will appear and be detected. At this time, the controller 4 controls the communication module 7 to send information to the owner to remind the owner that the battery is ignited in the current charging state. After receiving the information, the owner can rush to the scene in time to deal with it, avoiding the occurrence of dangerous accidents, and the smoke detection sensor 11 is an existing device.

[0042] In this embodiment, the protection device for charging the battery of the electric vehicle further includes a protection switch 12, which is disposed in the housing 1, and the two ends of the protection switch 12 are respectively electrically connected to the controller 4 and the output plug 3. The protection switch 12 includes an existing power-off device such as a circuit breaker and a MOS tube. When the voltage or current flowing through the protection device for charging the battery of the electric vehicle is too large, the protection switch 12 automatically cuts off the power to protect the battery.

[0043] At the same time, the electric vehicle battery charging protection device also includes a first adjustment knob 13, a second adjustment knob 14 and a third adjustment knob 15. The first adjustment knob 13 is arranged on the outside of the housing 1 and is electrically connected to the controller 4, and is used to adjust the current value threshold detected by the current detection module 6; the second adjustment knob 14 is arranged on the outside of the housing 1 and is electrically connected to the controller 4, and is used to adjust the voltage value threshold detected by the voltage detection module 9; the third adjustment knob 15 is arranged on the outside of the housing 1 and is electrically connected to the controller 4, and is used to adjust the delay time of the time relay 5. Because the battery capacity of different models of electric vehicles is inconsistent, the maximum acceptable voltage and current values ​​for charging are also inconsistent. By adjusting the detected current threshold, voltage threshold and charging delay time respectively by the first adjustment knob 13, the second adjustment knob 14 and the third adjustment knob 15, the use range of the electric vehicle battery charging protection device can be improved.

[0044] In summary, an embodiment of the utility model provides a protection device for charging an electric vehicle battery, comprising: a shell 1, on which an input plug 2 and an output plug 3 are provided, the input plug 2 is used to connect the charging cable of the electric vehicle, and the output plug 3 is used to connect the battery of the electric vehicle; a controller 4, the controller 4 is arranged in the shell 1, and the output plug 3 is electrically connected to the controller 4; a time relay 5, the time relay 5 is arranged in the shell 1, and the input plug 2 and the controller 4 are electrically connected to the time relay 5 respectively; a current detection module 6, the current detection module 6 is arranged in the shell 1 and is electrically connected to the controller 4; a communication module 7, the communication module 7 is arranged in the shell 1 and is electrically connected to the controller 4. The electric vehicle battery charging protection device provided by the utility model is connected between the charging line of the electric vehicle and the battery of the electric vehicle, wherein the time relay 5 can be used to control the battery charging time, avoid damaging the battery due to long-term charging and reduce the risk of safety accidents caused by battery charging, and the current detection module 6 can detect the current currently input into the battery. When the current value exceeds the detection threshold, the controller 4 controls the communication module 7 to notify the owner, and by sending information to notify the owner in time, safety accidents can be avoided, thereby further improving the safety of electric vehicle battery charging.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0047] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0049] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0050] Of course, the description of the above embodiments of the utility model is relatively detailed, but it cannot be understood as limiting the scope of protection of the utility model. The utility model can also have many other implementation methods. Based on this implementation method, other implementation methods obtained by ordinary technicians in this field without any creative work all belong to the scope of protection of the utility model. The scope of protection of the utility model shall be based on the attached claims.

Claims

1. A protection device for charging an electric vehicle battery, characterized in that: include: A housing, wherein an input plug and an output plug are provided on the housing, wherein the input plug is used to connect to a charging cable of the electric vehicle, and the output plug is used to connect to a battery of the electric vehicle; A controller, wherein the controller is disposed in the housing, and the output plug is electrically connected to the controller; A time relay, wherein the time relay is arranged in the housing, and the input plug and the controller are electrically connected to the time relay respectively; A current detection module, which is disposed in the housing and electrically connected to the controller; A communication module is disposed in the housing and is electrically connected to the controller.

2. The electric vehicle battery charging protection device according to claim 1, characterized in that: Also includes: A display screen is arranged on the outside of the shell and is electrically connected to the controller.

3. The protection device for charging an electric vehicle battery according to claim 2, characterized in that: Also includes: A voltage detection module is disposed in the housing and is electrically connected to the controller.

4. The protection device for charging an electric vehicle battery according to claim 2, characterized in that: Also includes: An ambient temperature sensor is arranged on the top outer side of the shell and is electrically connected to the controller.

5. The protection device for charging an electric vehicle battery according to claim 2, characterized in that: Also includes: A smoke detection sensor is arranged on the top outer side of the housing and is electrically connected to the controller.

6. The protection device for charging an electric vehicle battery according to claim 1, characterized in that: Also includes: A protection switch is arranged in the housing, and two ends of the protection switch are electrically connected to the controller and the output plug respectively.

7. The protection device for charging an electric vehicle battery according to claim 2, characterized in that: Also includes: A first adjusting knob is disposed outside the housing and is electrically connected to the controller, and is used to adjust a current value threshold detected by the current detection module.

8. The protection device for charging an electric vehicle battery according to claim 3, characterized in that: Also includes: A second adjusting knob is disposed on the outer side of the housing and is electrically connected to the controller, and is used to adjust a voltage value threshold detected by the voltage detection module.

9. The protection device for charging an electric vehicle battery according to claim 4, characterized in that: Also includes: A third adjusting knob is arranged on the outside of the housing and is electrically connected to the controller, and is used for adjusting the delay time of the time relay.

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