Battery charging fault detection mechanism of new energy automobile

Abstract

The invention provides a battery charging fault detection mechanism of a new energy automobile, and relates to the field of new energy automobiles, the battery charging fault detection mechanism of the new energy automobile detects each small battery in a battery pack, the battery charging fault detection mechanism of the new energy automobile comprises a plurality of groups of detectors, and the battery pack is connected in series between two adjacent groups of detectors. The detector is used for detecting whether current passes through the battery or not, and comprises a plurality of frames which are stacked up and down. The battery charging fault detection mechanism of the new energy automobile is composed of a frame, a vertical rod, a voltage sensor, an iron column, a first electric lead and an arc-shaped rod, the first electric lead is wound on the iron column, and a magnetic field can be generated when current passes through. The end portion of the arc-shaped rod is connected with an iron sheet, and the first pressure sensing unit and the magnetic field generate and attract the iron sheet. Whether the voltage sensor is damaged or not is judged by judging whether the arc-shaped rod is balanced or not, and the detection effect is achieved. And a connecting cylinder is further arranged, and an air bag and an elastic rubber ring are arranged in the connecting cylinder, so that the fixing effect of the charging gun is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, and in particular to a battery charging fault detection mechanism for new energy vehicles. Background Art

[0002] At present, in the era of increasing energy shortage, electric vehicles are gradually developing as a new energy means of transportation. Electric vehicles are charged through charging piles. If a single battery fails, it will affect the charging efficiency. In serious cases, the battery will explode, causing damage to people and vehicles.

[0003] The battery block in an electric vehicle is composed of multiple battery packs connected in parallel, and each battery pack is composed of multiple small batteries connected in series. The existing battery fault detection method is that when the battery manager detects that the voltage of a battery pack is zero or very small, it is judged that the battery is faulty or abnormal, and the battery line in the area is controlled to be disconnected.

[0004] However, when the voltage sensor or voltage sensor fails or is disconnected, the voltage sensor or voltage sensor will detect that the voltage / current of a battery or several batteries is zero or very small, so the existing battery fault detection method cannot distinguish between voltage fault and voltage sensor fault. Secondly, when charging, the current charging head is prone to unstable coaxiality between the charging head and the socket on the battery side due to the gravity of the charging head, resulting in poor contact during charging and affecting the charging efficiency. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the present invention provides a battery charging fault detection mechanism for a new energy vehicle, which solves the problems raised in the above-mentioned background technology.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a battery charging fault detection mechanism for a new energy vehicle, which detects each small battery in a battery pack, including multiple groups of detectors, and a battery pack is connected in series between two adjacent groups of detectors. The detector is used to detect whether current passes through the battery. The detector includes multiple frames, which are stacked up and down, and each frame corresponds to a small battery.

[0009] Two vertical poles are symmetrically arranged in the frame, a voltage sensor is pivotally connected between the two vertical poles, the front and rear ends of the voltage sensor are connected to iron columns, the front and rear ends of the voltage sensor are electrically connected to conductive wire one, the voltage sensor is connected in series with a small battery through conductive wire one, and the conductive wire one is wound on the iron column.

[0010] An arc rod is provided below the voltage sensor, the middle section of the arc rod is pivotally connected to the vertical rod body, the two ends of the arc rod are tilted upward, the ends of the arc rod are connected to an iron sheet, the iron sheet is located directly below an area where a conductive wire is wrapped around the iron column, and a pressure sensing unit is provided on the iron sheet.

[0011] When current passes through the voltage sensor, a magnetic field is generated on the front and rear sides of the voltage sensor, and the magnetic field attracts the iron sheet. At this time, the arc rod is still in a balanced state. When the voltage sensor is damaged, the current cannot pass through the voltage sensor, so that the front end of the voltage sensor still generates a magnetic field, but the rear end of the voltage sensor does not generate a magnetic field. At this time, the arc rod is unbalanced and tilted, and the front end of the arc rod is attracted by the magnetic force. The pressure sensing unit at the front end is compressed and feeds back information to the control module carried by the car.

[0012] Preferably, a slide groove is opened in the arc rod along the length direction, a ball is placed in the slide groove, a depression is opened at the bottom of the inner wall of the middle section of the slide groove, a pressure sensing unit 2 is arranged in the depression, when the arc rod is in a balanced state, the ball is located on the pressure sensing unit 2, when the arc rod is in an unbalanced state, the ball rolls to one end of the arc rod, and the ball no longer presses the pressure sensing unit 2.

[0013] Preferably, the vertical pole body is provided with a groove, a support rod is connected to the outside of the voltage sensor, the support rod is located at the central axis of the voltage sensor, the support rod body is inserted into the groove, a spring is connected to the top of the inner wall of the groove, and the lower end of the spring is in contact with the support rod.

[0014] Preferably, the arc-shaped rod body is pivotally connected with a shaft rod, one end of the shaft rod away from the vertical rod is connected to the middle section of the arc-shaped rod, and the shaft rod is located directly below the supporting rod.

[0015] Preferably, it also includes a connecting tube, which is used to connect to the charging gun of the charging pile. The detector located at the front is connected in series with the connecting tube. The inner wall of the connecting tube is inlaid with an airbag and a docking ring. The docking ring is located behind the airbag. The rear end of the connecting tube is connected to conductive wire 2, one end of conductive wire 2 is electrically connected to the docking ring, and the other end of conductive wire 2 is electrically connected to conductive wire 1 of the detector.

[0016] Preferably, an elastic rubber ring is embedded in the connecting tube, the elastic rubber ring is located between the airbag and the docking ring, a hose is connected between the elastic rubber ring and the airbag, and protrusions are connected at equal angles on the inner side of the elastic rubber ring.

[0017] Preferably, the end of the protrusion is flat, and a magnet is embedded in the protrusion.

[0018] (III) Beneficial effects

[0019] The present invention provides a battery charging fault detection mechanism for new energy vehicles. It has the following beneficial effects:

[0020] 1. The battery charging fault detection mechanism of the new energy vehicle is composed of a frame, a vertical pole, a voltage sensor, an iron column, a conductive wire, and an arc rod. The conductive wire is wound around the iron column, and a magnetic field is generated when current passes through. The end of the arc rod is connected to an iron sheet and a pressure sensing unit, and the magnetic field attracts the iron sheet. Whether the voltage sensor is damaged is judged by whether the arc rod is balanced, which plays a detection role. A connecting tube is also set up, and an air bag and an elastic rubber ring are arranged in the connecting tube to increase the fixing effect of the charging gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the present invention.

[0028] In the figure: 1 frame, 11 through slot, 2 upright pole, 21 groove, 22 spring, 23 shaft rod, 3 voltage sensor, 31 rod, 4 iron column, 5 conductive wire 1, 6 arc rod, 61 iron sheet, 62 pressure sensing unit 1, 63 slide groove, 64 ball, 65 pressure sensing unit 2, 7 connecting tube, 71 air bag, 72 docking ring, 73 conductive wire 2, 8 elastic rubber ring, 81 protrusion, 82 hose, 83 magnet. DETAILED DESCRIPTION

[0029] The embodiment of the present invention provides a battery charging fault detection mechanism for a new energy vehicle, such as Figure 1-7 As shown, each small battery in the battery pack is detected, including multiple groups of detectors, and a battery pack is connected in series between two adjacent groups of detectors. The detector is used to detect whether current passes through the battery. The detector includes multiple frames 1, which are stacked up and down, and each frame 1 corresponds to a small battery.

[0030] Two vertical poles 2 are symmetrically welded inside the frame 1, a voltage sensor 3 is pivotally connected between the two vertical poles 2, iron columns 4 are fixedly installed at the front and rear ends of the voltage sensor 3, and a conductive wire 5 is electrically connected to the front and rear ends of the voltage sensor 3. The voltage sensor 3 is connected in series with a small battery through the conductive wire 5, and the conductive wire 5 is wound on the iron column 4.

[0031] The frame 1 is provided with a through slot 11 to facilitate the extension of the conductive wire 5.

[0032] When current passes through the conductive wire 5 , the conductive wire 5 cooperates with the iron column 4 to generate a magnetic field.

[0033] An arc rod 6 is provided below the voltage sensor 3, the middle section of the arc rod 6 is pivotally connected to the rod body of the vertical rod 2, the two ends of the arc rod 6 are slightly tilted upward, an iron sheet 61 is fixedly installed at the end of the arc rod 6, the iron sheet 61 is located just below the area where the conductive wire 5 is wound around the iron column 4, and a pressure sensing unit 62 is fixedly installed on the iron sheet 61.

[0034] Since the weights of both ends of the arc-shaped rod 6 are the same, the arc-shaped rod 6 is in a balanced state when the car stops.

[0035] Working principle: When current passes through the voltage sensor 3, a magnetic field is generated on the front and rear sides of the voltage sensor 3, and the magnetic field attracts the iron sheet 61. At this time, the arc rod 6 is still in a balanced state. When the voltage sensor 3 is damaged, the current cannot pass through the voltage sensor 3, so that the front end of the voltage sensor 3 still generates a magnetic field, but the rear end of the voltage sensor 3 does not generate a magnetic field. At this time, the arc rod 6 is unbalanced and tilted, and the front end of the arc rod 6 is attracted by the magnetic force. The iron sheet 61 at the front end of the arc rod 6 conflicts with the iron column 4 at the front end of the voltage sensor 3, and the pressure sensing unit 62 at the front end is compressed and feeds back information to the control module carried by the car.

[0036] A slide groove 63 is provided in the arc rod 6 along the length direction, and a ball 64 is placed in the slide groove 63. A depression is provided at the bottom of the inner wall in the middle section of the slide groove 63, and a pressure sensing unit 2 65 is fixedly installed in the depression. When the arc rod 6 is in a balanced state, the ball 64 is located on the pressure sensing unit 2 65. When the arc rod 6 is in an unbalanced state, the ball 64 rolls toward one end of the arc rod 6, and the ball 64 no longer presses the pressure sensing unit 2 65. At this time, the pressure sensing unit 2 65 feeds back information to the control module carried by the car.

[0037] Dual feedback is provided through the pressure sensing unit 1 62 and the pressure sensing unit 2 65 to indicate that the voltage sensor 3 is damaged.

[0038] A groove 21 is formed on the rod body of the vertical pole 2, and a support rod 31 is fixedly installed on the outside of the voltage sensor 3. The support rod 31 is located at the central axis of the voltage sensor 3, and the rod body of the support rod 31 is inserted into the groove 21. A spring 22 is welded on the top of the inner wall of the groove 21, and the lower end of the spring 22 is in contact with the support rod 31. During the driving process, the car will bump up and down due to the road conditions. The spring 22 is used to press the support rod 31 to reduce the number of up and down vibrations of the voltage sensor 3.

[0039] The shaft 23 is pivotally connected to the arc rod 6, and the end of the shaft 23 away from the vertical rod 2 is connected to the middle section of the arc rod 6, and the shaft 23 is located directly below the support rod 31. The support rod 31 is not fixedly connected to the vertical rod 2, so that the voltage sensor 3 can be easily replaced.

[0040] It also includes a connecting tube 7, which is used to connect to the charging gun of the charging pile. The detector located at the front is connected in series with the connecting tube 7. The inner wall of the connecting tube 7 is inlaid with an airbag 71 and a docking ring 72, and the docking ring 72 is made of a conductive metal block.

[0041] The docking ring 72 is located behind the airbag 71, and a conductive wire 2 73 is fixedly installed at the rear end of the connecting tube 7. One end of the conductive wire 2 73 is electrically connected to the docking ring 72, and the other end of the conductive wire 2 73 is electrically connected to the conductive wire 1 5 of the detector.

[0042] An elastic rubber ring 8 is embedded in the connecting tube 7 and is located between the airbag 71 and the docking ring 72. A hose 82 is connected between the elastic rubber ring 8 and the airbag 71. A protrusion 81 is fixedly installed at an equal angle on the inner side of the elastic rubber ring 8.

[0043] The end of the protrusion 81 is flat, and a magnet 83 is embedded in the protrusion 81 .

[0044] Working principle: The charging gun head of the charging pile is inserted into the connecting tube 7, and the gun head contacts the docking ring 72. During the insertion process, the gun body squeezes the airbag 71, and the gas in the airbag 71 enters the elastic rubber ring 8. The elastic rubber ring 8 expands to make the protrusions 81 approach each other, so that the protrusions 81 are close to the gun body.

[0045] Since there is a metal component in the charging gun head of the charging pile, the gun body is adsorbed by the magnet 83, which further improves the gripping ability of the elastic rubber ring 8 and increases the fixing effect of the charging gun head.

[0046] In summary, the battery charging fault detection mechanism of the new energy vehicle is composed of a frame 1, a vertical pole 2, a voltage sensor 3, an iron column 4, a conductive wire 5, and an arc rod 6. The conductive wire 5 is wound around the iron column 4, and a magnetic field is generated when current passes through. The end of the arc rod 6 is connected to an iron sheet 61 and a pressure sensing unit 61, and the magnetic field generates an attraction to the iron sheet 61. Whether the voltage sensor 3 is damaged is judged by whether the arc rod 6 is balanced, which plays a detection role. A connecting tube 7 is also set up, and an air bag 71 and an elastic rubber ring 8 are arranged in the connecting tube 7 to increase the fixing effect of the charging gun.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A battery charging fault detection mechanism for a new energy vehicle detects each small battery in a battery pack, characterized in that: It comprises a plurality of detector groups, wherein a battery group is connected in series between two adjacent detector groups, and the detector is used to detect whether current passes through the battery. The detector comprises a plurality of frames (1), which are stacked up and down, and each frame (1) corresponds to a small battery; Two vertical poles (2) are symmetrically arranged in the frame (1), a voltage sensor (3) is pivotally connected between the two vertical poles (2), the front and rear ends of the voltage sensor (3) are both connected to an iron column (4), the front and rear ends of the voltage sensor (3) are both electrically connected to a conductive wire (5), the voltage sensor (3) and a small battery are connected in series via the conductive wire (5), and the conductive wire (5) is wound on the iron column (4); An arc-shaped rod (6) is provided below the voltage sensor (3), the middle section of the arc-shaped rod (6) is pivotally connected to the rod body of the vertical rod (2), the two ends of the arc-shaped rod (6) are tilted upward, the ends of the arc-shaped rod (6) are connected to an iron sheet (61), the iron sheet (61) is located directly below the area of ​​the iron column (4) wound with the conductive wire (5), and a pressure sensing unit (62) is provided on the iron sheet (61); When current passes through the voltage sensor (3), magnetic fields are generated at the front and rear sides of the voltage sensor (3), and the magnetic field attracts the iron sheet (61). At this time, the arc rod (6) is still in a balanced state. When the voltage sensor (3) is damaged, the current cannot pass through the voltage sensor (3), so that the front end of the voltage sensor (3) still generates a magnetic field, but the rear end of the voltage sensor (3) does not generate a magnetic field. At this time, the arc rod (6) is unbalanced and tilted, and the front end of the arc rod (6) is attracted by the magnetic force. The pressure sensing unit 1 (62) located at the front end is compressed and feeds back information to the control module carried by the vehicle.

2. The battery charging fault detection mechanism for a new energy vehicle according to claim 1, characterized in that: A slide groove (63) is provided in the arc rod (6) along the length direction, a ball (64) is placed in the slide groove (63), a depression is provided at the bottom of the inner wall of the middle section of the slide groove (63), a second pressure sensing unit (65) is provided in the depression, when the arc rod (6) is in a balanced state, the ball (64) is located on the second pressure sensing unit (65), when the arc rod (6) is in an unbalanced state, the ball (64) rolls toward one end of the arc rod (6), and the ball (64) no longer presses the second pressure sensing unit (65).

3. The battery charging fault detection mechanism for a new energy vehicle according to claim 2, characterized in that: The rod body of the vertical rod (2) is provided with a groove (21), the outer side of the voltage sensor (3) is connected with a support rod (31), the support rod (31) is located at the central axis of the voltage sensor (3), the rod body of the support rod (31) is inserted into the groove (21), the top of the inner wall of the groove (21) is connected with a spring (22), and the lower end of the spring (22) is in contact with the support rod (31).

4. The battery charging fault detection mechanism for a new energy vehicle according to claim 3 is characterized in that: The arc-shaped rod (6) is pivotally connected to a shaft rod (23), one end of the shaft rod (23) away from the vertical rod (2) is connected to the middle section of the arc-shaped rod (6), and the shaft rod (23) is located directly below the supporting rod (31).

5. The battery charging fault detection mechanism for a new energy vehicle according to claim 4, characterized in that: The invention also comprises a connecting tube (7), the connecting tube (7) being used for connecting to a charging gun of a charging pile, the detector located at the front is connected in series with the connecting tube (7), the inner wall of the connecting tube (7) is inlaid with an air bag (71) and a docking ring (72), the docking ring (72) is located behind the air bag (71), the rear end of the connecting tube (7) is connected to a conductive wire 2 (73), one end of the conductive wire 2 (73) is electrically connected to the docking ring (72), and the other end of the conductive wire 2 (73) is electrically connected to a conductive wire 1 (5) of the detector.

6. The battery charging fault detection mechanism for a new energy vehicle according to claim 5, characterized in that: An elastic rubber ring (8) is embedded in the connecting tube (7), the elastic rubber ring (8) is located between the airbag (71) and the docking ring (72), a hose (82) is connected between the elastic rubber ring (8) and the airbag (71), and a protrusion (81) is connected at an equal angle to the inner side of the elastic rubber ring (8).

7. A battery charging fault detection mechanism for a new energy vehicle according to claim 6, characterized in that: The end of the protrusion (81) is flat, and a magnet (83) is embedded in the protrusion (81).

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