Battery box for multiple storage batteries of electric vehicle

Abstract

The utility model provides an electric vehicle multi-storage battery box, which relates to the field of electric vehicle battery boxes and comprises a battery box body, electric vehicle storage batteries are arranged on the inner side of the battery box body, a flame-retardant pressing plate is attached to the upper end face of each electric vehicle storage battery through a cushion pad, and ventilation mesh surfaces are arranged on the left side face and the right side face of each flame-retardant pressing plate. A flame-retardant cotton strip is placed on the flame-retardant pressing plate through a storage cavity, cooling cavity channels are formed in the inner walls of the left side and the right side of the battery box body, liquid inlet cavity openings are formed in the rear sides of the upper ends of the cooling cavity channels, and liquid outlet cavity openings are formed in the lower ends of the cooling cavity channels. The utility model solves the problems that in the prior art, the heat transfer effect of an aluminum battery box in summer is weakened, and water vapor formed by overheating in the battery box is left in the box to cause the water loss fault of a storage battery.

Description

Technical Field

[0001] The utility model relates to the field of electric vehicle battery boxes, in particular to a multi-battery battery box for electric vehicles. Background Art

[0002] The electric vehicle battery, also known as the storage battery, is the power source of the electric vehicle. Its main function is to convert chemical energy into electrical energy. A battery box is usually used to protect the electric vehicle battery. After searching, the prior art (application number: CN202223576728.8) records that "by setting an incompletely closed screw hole, the cost of drilling can be reduced, and the installation is simpler and faster. At the same time, by setting a selected aluminum plate, the material has the characteristics of wear resistance, aging resistance, high temperature resistance, etc., so that it can withstand collisions and the test of time, and the life of the battery box is increased. Under specific process parameters, its surface quality is guaranteed." However, in the prior art, the heat transfer effect of the aluminum battery box is weakened in summer, and the water vapor formed by overheating in the battery box remains in the box, causing the battery to lose water. Utility Model Content

[0003] In order to overcome the defects of the prior art, a multi-battery battery box for an electric vehicle is provided to solve the problem that the heat transfer effect of the aluminum battery box in the prior art is weakened in summer, and the water vapor formed by overheating in the battery box remains in the box, causing the battery to lose water.

[0004] To achieve the above object, a multi-battery battery box for an electric vehicle is provided, comprising: a battery box body, wherein the electric vehicle battery is arranged inside the battery box body,

[0005] The upper end surface of the electric vehicle battery is bonded with a flame-retardant pressure plate through a buffer pad, and the left and right sides of the flame-retardant pressure plate are provided with ventilation mesh surfaces, and flame-retardant cotton strips are placed on the flame-retardant pressure plate through a storage cavity, and cooling cavities are provided in the left and right inner walls of the battery box body, a liquid inlet cavity opening is provided at the rear side of the upper end of the cooling cavity, and a liquid discharge cavity opening is provided at the lower end of the cooling cavity, and the cooling cavity is distributed in a curved shape in the side wall of the battery box body, and the liquid cavity opening and the liquid discharge cavity opening are sealed with sealing plugs; and the sealing plug is screwed and bonded to the groove wall of the battery box body, a buffer pad is bonded to the lower surface of the flame-retardant pressure plate, and a storage cavity is opened on the inner side of the flame-retardant pressure plate; and the storage cavity is connected to the ventilation mesh surface, and the flame-retardant pressure plate, flame-retardant cotton strips, ventilation mesh surface and buffer pad constitute a built-in moisture absorption and flame retardant structure of the battery box body.

[0006] Furthermore, a box cover is sealed and screwed on the upper surface of the battery box body, and connecting blocks are fixed on the front and rear sides of the flame-retardant pressure plate, and the connecting blocks are fixed to the lower surface of the box cover by screws.

[0007] Furthermore, a wiring port is installed on the concave surface of the upper end of the box cover, and a protective pad is laid on the inner bottom wall of the battery box body; and the protective pad is located at the lower end of the electric vehicle battery.

[0008] Furthermore, the cooling cavity is filled with cooling liquid.

[0009] The beneficial effect of the utility model is that the multi-battery battery box of the electric vehicle of the utility model utilizes the coolant poured into the cooling cavity in the side wall of the battery box to absorb the heat in the battery box, thereby accelerating the heat dissipation speed of the battery box, facilitating the reduction of the temperature rise speed of the battery in the battery box in summer, and avoiding water loss failure of the battery. The flame-retardant cotton strips in the flame-retardant pressure plate absorb the water vapor in the battery box and play a flame-retardant role, thereby facilitating the spread of fire in the flame-retardant battery box and improving the heat dissipation and safety of the battery box. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a front view cross-sectional structural schematic diagram of a multi-battery battery box for an electric vehicle according to an embodiment of the utility model.

[0011] Figure 2 It is a schematic diagram of the side cross-sectional structure of the battery box body and the cooling cavity according to an embodiment of the utility model.

[0012] Figure 3 It is a schematic diagram of the front cross-sectional structure of the flame-retardant pressing plate according to an embodiment of the utility model.

[0013] Figure 4 It is a schematic diagram of the three-dimensional structure of the flame-retardant pressing plate according to an embodiment of the utility model.

[0014] In the figure: 1. battery box body; 11. box cover; 12. wiring port; 13. protective pad; 2. electric vehicle battery; 3. flame retardant pressure plate; 31. flame retardant cotton strip; 32. storage cavity; 33. ventilation mesh surface; 34. buffer pad; 35. connecting block; 4. cooling cavity; 41. liquid inlet cavity opening; 42. liquid discharge cavity opening; 43. sealing plug. DETAILED DESCRIPTION

[0015] Reference Figures 1 to 4 As shown, the utility model provides a multi-battery battery box for an electric vehicle, comprising: a battery box body 1, an electric vehicle battery 2 is arranged inside the battery box body 1,

[0016] The upper end surface of the electric vehicle battery 2 is attached with a flame retardant pressure plate 3 through a buffer pad 34, and the left and right sides of the flame retardant pressure plate 3 are provided with a ventilation mesh surface 33. The flame retardant pressure plate 3 is placed with a flame retardant cotton strip 31 through a storage cavity 32. A cooling cavity 4 is provided in the inner walls of the left and right sides of the battery box body 1. A liquid inlet cavity 41 is provided at the rear side of the upper end of the cooling cavity 4, and a liquid discharge cavity 42 is provided at the lower end of the cooling cavity 4. The cooling cavity 4 is distributed in the battery box body 1 in a curved shape. Inside the side wall, the surfaces of the liquid inlet cavity 41 and the liquid discharge cavity 42 are blocked with sealing plugs 43; and the sealing plug 43 is screwed and fitted with the groove wall of the battery box body 1; a buffer pad 34 is bonded to the lower surface of the flame retardant pressure plate 3; a storage cavity 32 is opened on the inner side of the flame retardant pressure plate 3; and the storage cavity 32 is connected to the ventilation mesh surface 33; the flame retardant pressure plate 3, the flame retardant cotton strip 31, the ventilation mesh surface 33 and the buffer pad 34 constitute the built-in moisture absorption and flame retardant structure of the battery box body 1.

[0017] Working principle: The coolant poured into the cooling cavity 4 in the side wall of the battery box absorbs the heat in the battery box, speeding up the heat dissipation of the battery box, thus reducing the temperature rise rate of the battery in the battery box in summer and avoiding water loss failure of the battery. The flame-retardant cotton strip 31 in the flame-retardant pressure plate 3 absorbs the water vapor in the battery box and plays a flame-retardant role, thus facilitating the spread of fire in the flame-retardant battery box and improving the heat dissipation and safety of the battery box.

[0018] In this embodiment, a box cover 11 is sealed and screwed on the upper surface of the battery box body 1, and connecting blocks 35 are fixed to the front and rear sides of the flame-retardant pressure plate 3. The connecting blocks 35 are fixed to the lower surface of the box cover 11 by screws.

[0019] As a preferred embodiment, the box cover 11 is installed with the battery box body 1 in a sealed screw connection, so as to place the electric vehicle battery 2 in a sealed environment and reduce the impact of the external environment on the electric vehicle battery 2.

[0020] In this embodiment, a wiring port 12 is installed on the concave surface of the upper end of the box cover 11, and a protective pad 13 is laid on the inner bottom wall of the battery box body 1; and the protective pad 13 is located at the lower end of the electric vehicle battery 2.

[0021] As a preferred embodiment, the connection port 12 is convenient for connecting to the electric vehicle battery 2 in the battery box 1, so that the electric vehicle battery 2 provides electrical energy for starting the electric vehicle.

[0022] In this embodiment, the cooling cavity 4 is filled with cooling liquid.

[0023] As a preferred embodiment, the curved cooling cavity 4 is located in the side wall of the battery box body 1 made of alloy material, which is convenient for absorbing the heat in the battery box body 1 and improving the heat dissipation effect of the battery box body 1. The sealing plug 43 blocks the liquid inlet cavity port 41 and the liquid discharge cavity port 42 to prevent the leakage of the coolant in the cooling cavity 4, and at the same time facilitates the replacement and replenishment of the coolant. The buffer pad 34 facilitates the pressing of the flame-retardant pressure plate 3 and the electric vehicle battery 2 to prevent the electric vehicle battery 2 from shaking in the battery box body 1. Water vapor enters the storage cavity 32 through the ventilation mesh surface 33. The built-in moisture absorption and flame retardant structure of the battery box body 1 effectively absorbs water vapor in the box to prevent battery failure caused by water vapor, and at the same time facilitates the spread of fire in the flame-retardant battery box, thereby improving the heat dissipation and safety of the battery box.

[0024] The multi-battery battery box of an electric vehicle of the present invention can effectively solve the problem of water vapor formed by overheating in the battery box remaining in the box and causing water loss failure of the battery, which is convenient for reducing the heating speed of the battery in the battery box in summer, avoiding water loss failure of the battery, facilitating the spread of fire in the flame-retardant battery box, and improving the heat dissipation and safety of the battery box. The utility model is suitable for multi-battery battery boxes of electric vehicles.

Claims

1. An electric vehicle multi-battery box, comprising: A battery box (1), wherein an electric vehicle battery (2) is placed inside the battery box (1), characterized in that: The upper end surface of the electric vehicle battery (2) is bonded with a flame retardant pressure plate (3) via a buffer pad (34); the left and right sides of the flame retardant pressure plate (3) are provided with ventilation mesh surfaces (33); the flame retardant pressure plate (3) is provided with flame retardant cotton strips (31) via a storage cavity (32); the left and right inner walls of the battery box (1) are provided with cooling cavities (4); the upper rear side of the cooling cavity (4) is provided with a liquid inlet (41); the lower end of the cooling cavity (4) is provided with a liquid discharge cavity (42); the cooling cavity (4) is distributed in a curved shape on the battery box (1) In the side wall, the surfaces of the liquid inlet cavity (41) and the liquid discharge cavity (42) are blocked with sealing plugs (43); and the sealing plugs (43) are screwed and fitted with the groove wall of the battery box body (1); a buffer pad (34) is bonded to the lower surface of the flame retardant pressure plate (3); and a storage cavity (32) is opened on the inner side of the flame retardant pressure plate (3); and the storage cavity (32) is connected to the ventilation mesh surface (33); the flame retardant pressure plate (3), the flame retardant cotton strip (31), the ventilation mesh surface (33) and the buffer pad (34) constitute the built-in moisture absorption and flame retardant structure of the battery box body (1).

2. The multi-battery battery box for electric vehicles according to claim 1, characterized in that: The upper surface of the battery box body (1) is sealed and screwed with a box cover (11), and the front and rear sides of the flame-retardant pressure plate (3) are fixed with connecting blocks (35), and the connecting blocks (35) are fixed to the lower surface of the box cover (11) by screws.

3. The multi-battery battery box for electric vehicles according to claim 2, characterized in that: A wiring port (12) is installed on the concave surface of the upper end of the box cover (11), and a protective pad (13) is laid on the inner bottom wall of the battery box body (1); and the protective pad (13) is located at the lower end of the electric vehicle battery (2).

4. The electric vehicle multi-battery box according to claim 1, characterized in that: The cooling cavity (4) is filled with cooling liquid.

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