CN217882925U

CN217882925U - Charging protection device for electric vehicle battery

Info

Publication number: CN217882925U
Application number: CN202221970380.8U
Authority: CN
Inventors: 魏思亮; 杨光
Original assignee: Zhengzhou Dianluge Network Technology Co ltd
Current assignee: Zhengzhou Dianluge Network Technology Co ltd
Priority date: 2022-07-28
Filing date: 2022-07-28
Publication date: 2022-11-22
Anticipated expiration: 2032-07-28

Abstract

The utility model provides a charging protection device for electric motor car battery, including first power U1, electromagnetic relay P, fan M, thermistor R, second power U2, thermistor R sets up between a plurality of groups battery. The utility model discloses a connect thermistor R detachable in the fixed block and laminate on the ceramic chip to make the temperature of thermistor feedback group battery, when the temperature of group battery was too high, because thermistor is negative temperature coefficient type thermistor, the higher the temperature, its resistance value is lower, the stronger the magnetic field of electro-magnet, electromagnetic relay P's armature is inhaled down and contacts with lower contact B, by electromagnetic relay P armature switch-on buzzer HA ring, fan M starts simultaneously, thereby cools down to the group battery; when the temperature of the battery pack is reduced, the resistance of the thermistor is increased, the armature iron of the electromagnetic relay P is pulled up by the spring and contacts the upper contact A, and the indicator lamp D is lightened to indicate normal operation.

Description

Charging protection device for electric vehicle battery

Technical Field

The utility model relates to a technical field of electric motor car specifically is a charging protection device for electric motor car battery.

Background

The electric vehicle is an electric drive vehicle and is also named as an electric drive vehicle. Electric vehicles are classified into alternating current electric vehicles and direct current electric vehicles. Generally, an electric vehicle is a vehicle that uses a battery as an energy source, and converts electric energy into mechanical energy through a controller, a fan and other components to move so as to control the current and change the speed.

The electric vehicle battery pack generates heat and scalds when charging, if the electric vehicle battery pack continues to be charged, the waste of electric quantity can be caused, meanwhile, the potential safety hazard exists, and the existing electric vehicle charging supersaturation alarm device cannot timely cool the battery, so that the potential safety hazard is caused.

SUMMERY OF THE UTILITY MODEL

The utility model mainly provides a charging protection device for electric vehicle battery for solve the technical problem who proposes among the above-mentioned background art.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a charging protection device for an electric vehicle battery comprises a first power supply U1, wherein the positive pole of the first power supply U1 is electrically connected with one end of an indicator light D through a lead, the other end of the indicator light D is electrically connected with an upper contact A through a lead, the upper contact A can be electrically connected with an armature of an electromagnetic relay P, the armature of the electromagnetic relay P can be electrically connected with a lower contact B, the lower contact B is connected with one end of a fan M through a lead, the other end of the fan M is electrically connected with the positive pole of the first power supply U1 through a lead, and the negative pole of the first power supply U1 is electrically connected with the armature of the electromagnetic relay P through a lead;

the battery pack is characterized in that one end of the electromagnetic relay P is electrically connected to one end of the thermistor R through a lead, the other end of the thermistor R is electrically connected to the anode of the second power supply U2 through a lead, the cathode of the second power supply U2 is electrically connected to the other end of the electromagnetic relay P through a lead, and the thermistor R is arranged among the plurality of battery packs.

Preferably, a buzzer HA is further disposed between the positive electrode of the first power source U1 and the fan M.

Preferably, the thermistor R is detachably connected to the fixed block, a plurality of corresponding limiting blocks are symmetrically and fixedly connected to the two sides of the fixed block, corresponding first screw holes are formed in each limiting block, and the fixed block is detachably connected to the ceramic sheet through the first screw holes of the limiting blocks and the bolts in a matched mode.

Preferably, the fixed block is fixedly connected with a plurality of first magnetic sheets.

Preferably, a pressing block is hinged to one side of the fixing block, and a plurality of second magnetic sheets matched with the first magnetic sheets are arranged on the pressing block.

Preferably, the fixing block is provided with a placing groove for placing the thermistor R, and the thermistor R is in contact with the ceramic plate.

Preferably, a plurality of corresponding battery packs are arranged on two sides of the ceramic wafer and are fixedly connected to the base.

Preferably, a fan M is further arranged in the base, and a plurality of heat dissipation holes are formed in the base at the upper end of the fan M.

Preferably, the base sets up in the battery box, the both sides of battery box all are provided with the grip block, grip block and potsherd joint, the grip block in with be equipped with unanimous second screw on the battery box, the grip block with the potsherd passes through bolted connection.

Preferably, the thermistor R is a negative temperature coefficient thermistor, and the resistance decreases as the temperature increases.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a connect thermistor R detachable in the fixed block and laminate on the ceramic chip to make thermistor feed back the temperature of group battery, when the high temperature, because thermistor is negative temperature coefficient thermistor, the resistance value is lower when the temperature is higher, the magnetic field of electro-magnet is stronger, electromagnetic relay P armature is inhaled down and contacts with lower contact B, switch on bee calling organ HA by electromagnetic relay P armature and rings, fan M starts, drives the fan and rotates, thereby cools down the group battery; when the temperature of the battery pack is reduced, the resistance of the thermistor is increased, the armature iron of the electromagnetic relay P is pulled up by the spring and contacts the upper contact A, and the indicator lamp D is lightened to indicate normal operation;

2. the utility model discloses a potsherd sets up at the group battery subassembly to can accurately reflect the temperature in the group battery charging process, through setting up at the base lower extreme at the fan moreover, and realize the heat dissipation to the group battery through a plurality of louvres.

The present invention will be explained in detail with reference to the drawings and specific embodiments.

Drawings

Fig. 1 is a schematic circuit diagram of the apparatus of the present invention;

FIG. 2 is a schematic structural view of the thermistor design of the present invention;

fig. 3 is a schematic structural diagram of the battery box of the present invention;

fig. 4 is a schematic cross-sectional structural view of the battery box of the present invention.

In the figure: 1. a fixed block; 11. a limiting block; 12. a first screw hole;

2. a ceramic plate; 13. a first magnetic sheet; 14. a second magnetic sheet; 15. pressing into blocks;

3. a battery pack;

4. a base; 41. heat dissipation holes;

5. a fan M;

6. a battery box; 61. a clamping block; 62. and a second screw hole.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully with reference to the accompanying drawings, in which several embodiments of the present invention are shown, but the present invention can be implemented in different forms, and is not limited to the embodiments described in the text, but rather, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the use of the term knowledge in the specification of the present invention is for the purpose of describing particular embodiments and is not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 4, the present embodiment provides a charging protection device for an electric vehicle battery, including a first power source U1, a positive electrode of the first power source U1 is electrically connected to one end of an indicator light D through a wire, the other end of the indicator light D is electrically connected to an upper contact a through a wire, the upper contact a is electrically connected to an armature of an electromagnetic relay P, the armature of the electromagnetic relay P is also electrically connected to a lower contact B, the lower contact B is connected to one end of a fan M5 through a wire, the other end of the fan M5 is electrically connected to a positive electrode of the first power source U1 through a wire, and a negative electrode of the first power source U1 is electrically connected to the armature of the electromagnetic relay P through a wire.

One end of the electromagnetic relay P is electrically connected to one end of the thermistor R through a lead, the other end of the thermistor R is electrically connected to the anode of the second power supply U2 through a lead, the cathode of the second power supply U2 is electrically connected to the other end of the electromagnetic relay P through a lead, and the thermistor R is arranged among the battery packs 3.

Preferably, as shown in fig. 1, a buzzer HA is further disposed between the positive electrode of the first power source U1 and the fan M5.

As this embodiment is preferred, as shown in fig. 2, thermistor R can dismantle and connect on fixed block 1, the equal symmetrical fixedly connected with a plurality of corresponding stoppers 11 in both sides of fixed block 1, every stopper 11 on all seted up corresponding first screw 12, fixed block 1 connect on potsherd 2 through first screw 12 and the bolt cooperation detachable of stopper 11.

As shown in fig. 2, a plurality of first magnetic sheets 13 are preferably fixedly connected to the fixing block 1.

Preferably, as shown in fig. 2, a pressing block 15 is hinged to one side of the fixing block 1, and a plurality of second magnetic pieces 14 matched with the first magnetic pieces 13 are arranged on the pressing block 15.

As shown in fig. 2, the fixing block 1 is preferably provided with a placing groove for placing the thermistor R, and the thermistor R contacts with the ceramic sheet 2.

Preferably, as shown in fig. 3, a plurality of corresponding battery packs 3 are disposed on both sides of the ceramic plate 2, and the plurality of battery packs 3 are fixedly connected to the base 4.

As shown in fig. 4, a fan M5 is further disposed in the base 4, and a plurality of heat dissipation holes 41 are opened on the base 4 at the upper end of the fan M5.

As a preferred embodiment, as shown in fig. 3 and 4, the base 4 is disposed in the battery box 6, clamping blocks 61 are disposed on both sides of the battery box 6, the clamping blocks 61 are connected with the ceramic sheets 2 in a clamping manner, the clamping blocks 61 and the battery box 6 are provided with second screw holes 62, and the clamping blocks 61 and the ceramic sheets 2 are connected by bolts.

The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, if the method and the technical solution of the present invention are adopted, the present invention can be directly applied to other occasions without substantial improvement, and the present invention is within the protection scope of the present invention.

Claims

1. A charging protection device for an electric vehicle battery comprises a first power supply U1 and is characterized in that the positive pole of the first power supply U1 is electrically connected with one end of an indicator light D through a lead, the other end of the indicator light D is electrically connected with an upper contact A through a lead, the upper contact A can be electrically connected with an armature of an electromagnetic relay P, the armature of the electromagnetic relay P can also be electrically connected with a lower contact B, the lower contact B is connected with one end of a fan M (5) through a lead, the other end of the fan M (5) is electrically connected with the positive pole of the first power supply U1 through a lead, and the negative pole of the first power supply U1 is electrically connected with the armature of the electromagnetic relay P through a lead;

one end of the electromagnetic relay P is electrically connected to one end of the thermistor R through a lead, the other end of the thermistor R is electrically connected to the anode of the second power supply U2 through a lead, the cathode of the second power supply U2 is electrically connected to the other end of the electromagnetic relay P through a lead, and the thermistor R is arranged among the battery packs (3).

2. The charging protection device for the battery of the electric vehicle as claimed in claim 1, wherein a buzzer HA is further disposed between the positive electrode of the first power source U1 and the fan M (5).

3. The charging protection device for the battery of the electric vehicle according to claim 1, wherein the thermistor R is detachably connected to the fixing block (1), a plurality of limiting blocks (11) are symmetrically and fixedly connected to two sides of the fixing block (1), a first screw hole (12) is formed in each limiting block (11), and the fixing block (1) is detachably connected to the ceramic plate (2) through the first screw hole (12) of each limiting block (11) and the bolt in a matched mode.

4. A charging protection device for electric vehicle battery according to claim 3, characterized in that a plurality of first magnetic sheets (13) are fixedly connected to the fixing block (1).

5. The charging protection device for the battery of the electric vehicle as claimed in claim 4, wherein a pressing block (15) is hinged to one side of the fixing block (1), and a plurality of second magnetic sheets (14) matched with the first magnetic sheets (13) are arranged on the pressing block (15).

6. The charging protection device for the battery of the electric vehicle according to claim 5, characterized in that a placing groove for placing the thermistor R is arranged on the fixing block (1), and the thermistor R is in contact with the ceramic plate (2).

7. The charging protection device for the battery of the electric vehicle as claimed in claim 6, wherein a plurality of corresponding battery packs (3) are arranged on both sides of the ceramic plate (2), and the plurality of battery packs (3) are fixedly connected to the base (4).

8. The charging protection device for the battery of the electric vehicle as claimed in claim 7, wherein a fan M (5) is further disposed in the base (4), and a plurality of heat dissipation holes (41) are formed in the base (4) at the upper end of the fan M (5).

9. The charging protection device for the battery of the electric vehicle according to claim 8, wherein the base (4) is arranged in the battery box (6), clamping blocks (61) are arranged on two sides of the battery box (6), the clamping blocks (61) are connected with the ceramic plate (2) in a clamping mode, second screw holes (62) are formed in the clamping blocks (61) and the battery box (6) in a consistent mode, and the clamping blocks (61) are connected with the ceramic plate (2) through bolts.

10. The charging protection device for the battery of the electric vehicle as recited in claim 6, wherein the thermistor R is a negative temperature coefficient type thermistor.