Lithium battery module

Abstract

The present application relates to lithium battery module, including several battery blocks and steel shell, its characterized in being that: the outside of battery block is equipped with the box for placing battery block, the surface of battery block is equipped with the clamping slot, the inner surface of box is connected with the glass magnesium fireproof plate, and battery block is constituted by lithium battery;The probability of liquid seeping into the battery module inside the box is reduced by the water baffle, the phenomenon of circuit failure caused by the corrosion of the battery module by liquid is avoided, when liquid seeps into the inside of the drainage groove, the liquid is adsorbed by the drainage groove, so that the effect of guiding flow is generated, the liquid is introduced into the inside of the drainage groove, and then the liquid is dispersed by the shunt groove and the drain groove, the area of liquid evaporation is increased, the evaporation speed of liquid is accelerated, and the probability of liquid seeping into the battery module inside the box is reduced;In addition, when the clamping block is connected with the clamping slot, the position of the battery block is limited by the clamping block on the inner surface of the box, so that the position of the battery module is limited.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery modules, in particular to a lithium battery module. BACKGROUND

[0002] Lithium batteries are a class of batteries that use lithium metal or lithium alloy as the positive / negative electrode material, and use non-aqueous electrolyte solution. The optional positive electrode material includes lithium cobaltate, lithium manganate, lithium nickelate, lithium iron phosphate, nickel-cobalt-aluminum ternary, and nickel-cobalt-manganese ternary. The negative electrode material is mostly graphite. In addition, lithium metal, lithium alloy, silicon-carbon negative electrode, and oxide negative electrode material can also be used for the negative electrode.

[0003] A number of battery modules can constitute a complete battery pack, and the battery pack is composed of a number of battery modules, and each battery module contains a number of battery cells. The battery cells and modules in the battery pack are connected in series or parallel by wires to form a whole. A number of lithium batteries can constitute a lithium battery module, and a number of lithium battery modules can constitute a complete lithium battery pack.

[0004] The existing Chinese patent with publication number CN208173663U discloses a lithium battery module, which comprises a shell, a cover is arranged above the shell, a pole is arranged on the cover, the pole is connected with a battery cell arranged in the shell, an LED color-changing lamp group is arranged on the surface of the shell and / or the cover, a temperature sensor is arranged on one side of the cover close to the shell, the temperature sensor and the LED color-changing lamp group are connected through a control module, and the LED color-changing lamp group, the temperature sensor, and the control module are in conduction with the pole. The working temperature of the lithium battery can be monitored in real time, and the user is warned.

[0005] The existing Chinese patent with publication number CN215644726U discloses a lithium battery module. The lithium battery module comprises a plurality of single batteries, each single battery comprising a plurality of battery cell units, each battery cell unit comprising a first battery cell group, a second battery cell group, a heat insulation device, and a heat equalization device. The first battery cell group is provided with a first side, and the side of the second battery cell group facing the first side is a second side. The first side and the second side are in position correspondence. The heat insulation device comprises a center heat insulation wall arranged between the first side and the second side. The first battery cell group comprises a plurality of first battery cells, and the heat equalization device is arranged between adjacent first battery cells. The heat equalization device comprises a first heat equalization film, a second heat equalization film, and a heat insulation film connected between the first heat equalization film and the second heat equalization film. The problem of poor heat insulation and heat equalization of the existing lithium battery module is solved.

[0006] Although the above patent has the effect of real-time monitoring of the working temperature of the lithium battery and poor heat insulation and heat distribution, the above lithium battery module does not have a corresponding waterproof structure. When liquid seeps into the inside of the lithium battery module, due to the lack of a corresponding waterproof structure, it may cause the liquid to seep into the lithium battery module and cause a short circuit or cause the lithium battery module to produce an electric spark, increasing the risk coefficient and reducing the protection effect of the lithium battery module. Therefore, when in use, the waterproof structure needs to be further processed and improved. For this reason, the present inventor proposes a lithium battery module to solve the above technical problems. SUMMARY

[0007] The present application is aimed at providing a technical solution to solve the above problems.

[0008] The lithium battery module comprises a plurality of battery blocks and a steel shell, the surface of the battery block is electrically connected with a power supply connecting line, one end of the power supply connecting line penetrates the surface of the steel shell and extends beyond the outside of the steel shell, the surface of the battery block is connected with a patch, the outside of the battery block is provided with a box body for placing the battery block, the surface of the battery block is provided with a clamping groove, the inner surface of the box body is provided with a clamping block matched with the clamping groove, when the clamping block is connected with the clamping groove, the position of the battery block is limited by the clamping blocks at the upper and lower ends of the inner surface of the box body, reducing the effect of battery block shaking or disengaging from the specified installation position, the inner surface of the box body is connected with a glass-magnesium fireproof plate, the glass-magnesium fireproof plate can resist high temperature, has the functions of high temperature resistance, flame resistance, sound absorption, shock absorption, waterproof and moistureproof, insect prevention, light weight, corrosion resistance, non-toxic, odorless and pollution-free, can be directly painted and directly pasted, can be used with air nails and directly tiled, has good coloring property, high strength, bending toughness, convenient decoration, can be sawed, nailed and adhered, etc. When the battery block is damaged and causes fire, the glass-magnesium fireproof plate plays a role in fire prevention, reduces the spread speed of open fire, increases the rescue time for rescue personnel, the surface of the glass-magnesium fireproof plate is provided with a limiting elastic block for limiting the position of the battery block, and the battery block is composed of lithium batteries;

[0009] The inside of the box body is provided with a water baffle, the surface of the water baffle is provided with a drainage groove, one end of the drainage pipe is abutted with the inside of the drainage groove, both ends of the drainage groove are provided with a shunt groove, one end of the shunt groove extends to the inner surface of the drainage groove, the surface of the shunt groove is connected with a drainage groove, one end of the drainage groove extends to the inner surface of the shunt groove, the inside of the drainage groove is connected with a drainage pipe for discharging liquid, the space between the water baffle and the limiting elastic block is filled with a nylon layer, and the surface of the box body is provided with a drainage hole matched with the drainage pipe.

[0010] Further, the top of the box is provided with a top cover, the surface of the top cover is connected with a handle fixing block, the surface of the handle fixing block is connected with a movable handle, one end of the movable handle can rotate along the surface of the handle fixing block, the box and the top cover are detachable structure, when the movable handle is applied with force, the handle fixing block is pulled by the movable handle, the handle fixing block drives the top cover and the box to move, and the box can be carried.

[0011] Further, the bottom of the box is provided with a bottom plate, the surface of the bottom plate is provided with a plurality of magnetic plates, the adjacent two magnetic plates are equidistantly arranged, one end of the magnetic plate is flush with the surface of the bottom plate, the magnetic plate generates magnetic attraction force to limit the bottom plate in the specified installation position, thereby reducing the probability of sliding of the bottom of the box, and the equidistant arrangement makes the magnetic area of the bottom of the box equal, and reduces the local magnetic attraction force that is too large or too small due to uneven distribution of the magnetic plates.

[0012] Further, the surface of the box is connected with an electric quantity display screen, one end of the power supply connecting line is electrically connected with the electric quantity display screen, the electric quantity display screen displays the remaining electric quantity of the battery block, the electric quantity display screen is composed of a capacitive screen, and the electric quantity display screen is electrically connected with the battery block through the power supply connecting line.

[0013] Further, the surface of the box is provided with a buffer spring, the buffer spring is symmetrically arranged on the surface of both ends of the box, when the both ends of the box collide with external objects, the buffer spring buffers the impact force generated by the collision, reduces the damage of the impact force to the both ends of the box, and the buffer spring is composed of rubber.

[0014] Further, the limiting spring is in a circular arc shape, the limiting spring is symmetrically arranged on the surface of the glass-magnesium fireproof plate, the distance between the adjacent two limiting springs is equal, when the battery module is placed in the box, there is a gap between the battery module and the inside of the box, so that the battery module can slide in the box, the surface of the battery module is pressed by the limiting springs at both ends of the box, thereby limiting the position of the battery module.

[0015] Further, the outer side of the box is provided with a plurality of reinforcing ribs for reinforcing support force, the reinforcing ribs are in a grid shape, the reinforcing ribs increase the stress points of the outer side of the box, thereby increasing the stress area, achieving the effect of increasing the support force, and reducing the possibility of rupture of the box due to expansion caused by heat.

[0016] Further, the patch is composed of an adhesive sheet, and the patch is used to adhere the two adjacent battery blocks, one end of the steel shell abuts against the top of the battery block, the patch increases the connection stability between the two adjacent battery blocks, reduces the probability of battery block sliding or falling off, so that the plurality of battery blocks form a battery module, when the two adjacent battery blocks are adhered to each other, the adhesive tape can be wound outside the two adjacent battery blocks, and the connection stability of the two adjacent battery blocks is increased.

[0017] Further, the inner surfaces of the drainage groove, the distribution groove and the drainage groove are connected with water-absorbing sponges for absorbing liquid, the distribution grooves are symmetrically installed at two ends of the drainage groove, and the drainage grooves are symmetrically installed at two ends of the distribution groove, when the liquid seeps into the inside of the drainage groove, the liquid is absorbed by the water-absorbing sponges, so that the liquid is guided into the inside of the drainage groove, and then the liquid is dispersed through the distribution groove and the drainage groove, the area of liquid evaporation is increased, and when the liquid accumulates more, the liquid flows into the inside of the drainage pipeline under the action of gravity, and then is discharged to the outside of the box through the drainage hole.

[0018] Compared with the prior art, the beneficial effects of the present application are that the probability of liquid seeping into the inside of the battery module in the box is reduced through the water stop plate, the phenomenon of circuit failure caused by corrosion of the battery module by liquid is avoided, when the liquid seeps into the inside of the drainage groove, the liquid is absorbed by the drainage groove, so that the liquid is guided into the inside of the drainage groove, and then the liquid is dispersed through the distribution groove and the drainage groove, the area of liquid evaporation is increased, the evaporation speed of the liquid is accelerated, and the probability of liquid seeping into the inside of the battery module in the box is reduced.

[0019] In addition, when the clamping blocks are connected with the clamping grooves, the clamping blocks at the upper and lower ends of the inner surface of the box are used to limit the position of the battery block, the effect of the battery block shaking or deviating from the specified installation position is reduced, when the battery module is placed in the inside of the box, the surface of the battery module is pressed by the limiting elastic blocks at the two ends of the inside of the box, so that the position of the battery module is limited, and the limiting effect is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a perspective view of a lithium battery module;

[0021] Figure 2 is a partial structure schematic view of a lithium battery module;

[0022] Figure 3 is a perspective view of a box in a lithium battery module;

[0023] Figure 4 is a perspective view of another angle of a box in a lithium battery module;

[0024] Figure 5is the perspective view of the side view angle of the box in the lithium battery module;

[0025] Figure 6 is the internal structure schematic view of the box in the lithium battery module;

[0026] Figure 7 is the internal structure schematic view of the water baffle in the lithium battery module;

[0027] In the figure: 1-battery block, 2-steel shell, 3-power connection line, 4-box, 5-clamping groove, 6-clamping block, 7-magnesium glass fireproof plate, 8-limiting elastic block, 9-top cover, 10-handles fixing block, 11-movable handle, 12-bottom plate, 13-magnetic plate, 14-charge display screen, 15-cushioning elastic block, 16-stiffener, 17-patch, 18-water baffle, 19-drainage groove, 20-shunt groove, 21-drainage groove, 22-drainage pipeline, 23-nylon layer, 24-drainage hole, 25-water-absorbing sponge. DETAILED DESCRIPTION

[0028] The application will be further described in detail below in combination with the accompanying drawings and specific embodiments.

[0029] In this embodiment, please refer to Figures 1-7 The specific implementation of the lithium battery module comprises a plurality of battery blocks 1 and a steel shell 2. The surface of the battery block 1 is electrically connected with a power connection line 3. One end of the power connection line 3 penetrates the surface of the steel shell 2 and extends beyond the outside of the steel shell 2. The surface of the battery block 1 is connected with a patch 17. The outside of the battery block 1 is provided with a box 4 for placing the battery block 1. The surface of the battery block 1 is provided with a clamping groove 5. The inner surface of the box 4 is provided with a clamping block 6 matched with the clamping groove 5. When the clamping block 6 is connected with the clamping groove 5, the position of the battery block 1 is limited by the clamping block 6 at the upper and lower ends of the inner surface of the box 4, so as to reduce the shaking or disengagement of the battery block 1 from the specified installation position. The inner surface of the box 4 is connected with a magnesium glass fireproof plate 7. The magnesium glass fireproof plate 7 can resist 1500-degree high temperature. It has the functions of high-temperature resistance, flame resistance, sound absorption, shock resistance, waterproofness, moisture resistance, insect resistance, light weight, corrosion resistance, non-toxicity, non-odor, non-pollution, direct painting, direct veneer, air nail, ceramic tile, coloring, high strength, bending toughness, easy decoration, sawing, nailing and sticking. When the battery block 1 is damaged and causes fire, the magnesium glass fireproof plate 7 plays a role in fire prevention, reduces the speed of fire spread, and increases the rescue time for rescue personnel. The surface of the magnesium glass fireproof plate 7 is provided with a limiting elastic block 8 for limiting the position of the battery block 1. The battery block 1 is composed of lithium batteries.

[0030] The inside of the box body 4 is provided with a waterproof plate 18, the surface of the waterproof plate 18 is provided with a drainage groove 19, one end of the guide pipe 6 abuts against the inside of the drainage groove 19, both ends of the drainage groove 19 are provided with a shunt groove 20, one end of the shunt groove 20 extends to the inner surface of the drainage groove 19, the surface of the shunt groove 20 is connected with a drainage groove 21, one end of the drainage groove 21 extends to the inner surface of the shunt groove 20, the inside of the drainage groove 21 is connected with a drainage pipe 22 for draining liquid, the waterproof plate 18 and the limiting elastic block 8 are filled with a nylon layer 23, the main component of the nylon layer 23 is polyamide, due to the polarity of the amide group -NHCO- of the nylon layer 23, the nylon layer 23 has the functions of water absorption and dehydration, the surface of the box body 4 is provided with a drainage hole 24 matched with the drainage pipe 22.

[0031] The top of the box body 4 is provided with a top cover 9, the surface of the top cover 9 is connected with a handle fixing block 10, the surface of the handle fixing block 10 is connected with a movable handle 11, one end of the movable handle 11 can rotate along the surface of the handle fixing block 10, the box body 4 and the top cover 9 are detachable, when an external force is applied to the movable handle 11, the handle fixing block 10 is pulled by the movable handle 11, so that the handle fixing block 10 drives the top cover 9 and the box body 4 to move, thereby achieving the effect of being portable.

[0032] The bottom of the box body 4 is provided with a bottom plate 12, the surface of the bottom plate 12 is provided with a plurality of magnetic plates 13, adjacent two magnetic plates 13 are equidistantly arranged, one end of the magnetic plate 13 is flush with the surface of the bottom plate 12, the magnetic plate 13 generates a magnetic attraction force to limit the bottom plate 12 to a specified installation position, thereby reducing the probability of sliding of the bottom of the box body 4, the equidistant arrangement makes the magnetic area of the bottom of the box body 4 equal, thereby reducing the situation that the local magnetic attraction force is too large or too small due to uneven distribution of the magnetic plates 13.

[0033] The surface of the box body 4 is connected with an electric quantity display screen 14, one end of the power supply connecting line 3 is electrically connected with the electric quantity display screen 14, the electric quantity display screen 14 displays the remaining electric quantity of the battery block 1, the electric quantity display screen 14 is composed of a capacitive screen, the electric quantity display screen 14 is electrically connected with the battery block 1 through the power supply connecting line 3.

[0034] The surface of the box body 4 is provided with a buffer elastic block 15, the buffer elastic block 15 is symmetrically arranged on the surface of both ends of the box body 4, when the both ends of the box body 4 collide with external objects, the buffer elastic block 15 buffers the impact force generated by the collision, thereby reducing the damage of the impact force to the both ends of the box body 4, the buffer elastic block 15 is composed of rubber.

[0035] The limiting elastic block 8 is in arc shape, the limiting elastic block 8 is composed of rubber, the limiting elastic block 8 is symmetrically installed on the surface of the magnesium oxide fireproof plate 7, the interval of the adjacent two limiting elastic blocks 8 is equal, when the battery module is placed in the inside of the box body 4, since the gap exists between the battery module and the inside of the box body 4, the battery module can slide in the inside of the box body 4, the surface of the battery module is pressed by the limiting elastic block 8 at both ends in the inside of the box body 4, so that the position of the battery module is limited.

[0036] The outside of the box body 4 is provided with a plurality of reinforcing ribs 16 for reinforcing support force, the reinforcing ribs 16 are in grid shape, the stress points of the outside of the box body 4 are increased through the reinforcing ribs 16, so that the stress area is increased, the support force is increased, and the possibility of rupture of the box body 4 due to expansion caused by heat is reduced.

[0037] The patch 17 is composed of adhesive sheet, the adjacent two battery blocks 1 are adhered through the patch 17, one end of the steel shell 2 abuts against the top of the battery block 1, the connection stability between the adjacent two battery blocks 1 is increased through the patch 17, the probability of sliding or falling of the battery block 1 is reduced, so that a plurality of battery blocks 1 form a battery module, when the adjacent two battery blocks 1 adhere to each other, the adhesive tape can be wound outside the adjacent two battery blocks 1, and the connection stability of the adjacent two battery blocks 1 is increased.

[0038] The inner surfaces of the drainage groove 19, the shunt groove 20 and the drainage groove 21 are connected with water-absorbing sponges 25 for absorbing liquid, the shunt groove 20 is symmetrically installed at both ends of the drainage groove 19, the drainage groove 21 is symmetrically installed at both ends of the shunt groove 20, when the liquid seeps into the inside of the drainage groove 19, the liquid is absorbed by the water-absorbing sponges 25, so that the effect of guiding flow is generated to guide the liquid into the inside of the drainage groove 19, and then the liquid is dispersed through the shunt groove 20 and the drainage groove 21, the area of liquid evaporation is increased, when the liquid accumulates more, the liquid flows into the inside of the drainage pipeline 11 under the influence of gravity, and then is discharged outside the box body 4 through the drainage hole 24.

[0039] The design points of the present application are that the probability of liquid seeping into the battery module in the inside of the box body 4 is reduced through the water baffle 18, the phenomenon of circuit failure caused by corrosion of the battery module by liquid is avoided, when the liquid seeps into the inside of the drainage groove 19, the liquid is absorbed by the drainage groove 19, so that the effect of guiding flow is generated to guide the liquid into the inside of the drainage groove 19, and then the liquid is dispersed through the shunt groove 20 and the drainage groove 21, the area of liquid evaporation is increased, the evaporation speed of the liquid is accelerated, and the probability of liquid seeping into the battery module in the inside of the box body 4 is reduced;

[0040] In addition, the glass magnesium fireproof plate 7 can resist 1500 degrees high temperature, has the characteristics of high temperature resistance and flame retardance, reduces the damage of the battery block 1 to cause the fire, slows down the spread speed of the open fire, plays a fireproof role, increases the rescue time of the rescue personnel, when the clamping block 6 is connected with the clamping groove 5, the clamping block 6 at the upper and lower ends of the inner surface of the box body 4 limits the position of the battery block 1, reduces the shaking or disengagement of the battery block 1 from the specified installation position, when the battery module is placed in the inside of the box body 4, the limiting elastic block 8 at the two ends of the inside of the box body 4 presses the surface of the battery module, thereby limiting the position of the battery module.

[0041] The operation process of the present application is that the adjacent two battery blocks 1 are adhered by the patch 17, so that the plurality of battery blocks 1 form a battery module, when the adjacent two battery blocks 1 are adhered to each other, the adhesive tape can be wound outside the adjacent two battery blocks 1, thereby increasing the connection stability of the adjacent two battery blocks 1.

[0042] When the battery block 1 is placed in the inside of the box body 4, the clamping block 6 at the upper and lower ends of the inner surface of the box body 4 limits the position of the clamping groove 5 at the upper and lower ends of the battery block 1 by connecting the clamping block 6 with the clamping groove 5, thereby reducing the shaking or disengagement of the battery block 1 from the specified installation position, at the same time, the limiting elastic block 8 at the two ends of the inside of the box body 4 presses the surface of the battery module, thereby limiting the position of the battery module, and further limiting effect is achieved.

[0043] The water plate 18 reduces the probability of liquid seeping into the battery module in the inside of the box body 4, when the liquid seeps into the inside of the drainage groove 19, the water absorption sponge 25 in the inside of the drainage groove 19 absorbs the liquid, thereby generating the effect of guiding the liquid into the inside of the drainage groove 19, and then dispersing the liquid through the shunt groove 20 and the drainage groove 21, increasing the area of liquid evaporation, accelerating the evaporation speed of the liquid, and reducing the probability of liquid seeping into the battery module in the inside of the box body 4, since the drainage pipeline 22 is bent, when the liquid is higher than the drainage hole 24 or the drainage hole 24 is soaked in the inside of the liquid, the liquid can be prevented from seeping into the inside of the box body 4 due to the influence of pressure.

[0044] In addition, the magnetic attraction plate 13 generates a magnetic attraction force, so that the bottom plate 12 is limited to the specified installation position, thereby reducing the probability of sliding of the bottom of the box body 4, facilitating the placement of the installer, and reducing the possibility of the box body 4 falling to the ground.

[0045] The above is a further detailed description of the present application in combination with specific preferred embodiments, and cannot be regarded as the specific implementation of the present application being limited to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, without departing from the concept of the present application, a number of simple deductions or substitutions can be made, which should be regarded as the protection scope of the present application.

Claims

1. A lithium battery module comprising a number of battery blocks and a steel casing, characterized in that: The surface of the battery block is electrically connected with a power supply connecting line, one end of the power supply connecting line penetrates the surface of the steel shell and extends beyond the outside of the steel shell, the surface of the battery block is connected with a patch, the outside of the battery block is provided with a box body for placing the battery block, the surface of the battery block is provided with a clamping groove, the inner surface of the box body is provided with a clamping block matched with the clamping groove, the inner surface of the box body is connected with a glass-magnesium fireproof plate, the surface of the glass-magnesium fireproof plate is provided with a limiting elastic block for limiting the position of the battery block, and the battery block is composed of a lithium battery. The inside of the box body is provided with a waterproof plate, the surface of the waterproof plate is provided with a drainage groove, one end of the drainage pipeline abuts against the inside of the drainage groove, both ends of the drainage groove are provided with a shunt groove, one end of the shunt groove extends to the inner surface of the drainage groove, the surface of the shunt groove is connected with a drainage groove, one end of the drainage groove extends to the inner surface of the shunt groove, the inside of the drainage groove is connected with a drainage pipeline for discharging liquid, the space between the waterproof plate and the limiting elastic block is filled with a nylon layer, and the surface of the box body is provided with a drainage hole matched with the drainage pipeline.

2. The lithium battery module of claim 1, wherein: The top of the box body is provided with a top cover, the surface of the top cover is connected with a handle fixing block, and the surface of the handle fixing block is connected with a movable handle.

3. The lithium battery module of claim 2, wherein: The bottom of the box body is provided with a bottom plate, the surface of the bottom plate is provided with a plurality of magnetic plates, and adjacent two magnetic plates are equidistantly arranged, and one end of the magnetic plate is flush with the surface of the bottom plate.

4. The lithium battery module of any one of claims 1-3, wherein: The surface of the box body is connected with an electric quantity display screen, and one end of the power supply connecting line is electrically connected with the electric quantity display screen.

5. The lithium battery module of any one of claims 1-3, wherein: The surface of the box body is provided with a buffer elastic block, and the buffer elastic blocks are symmetrically installed on the surfaces of both ends of the box body.

6. The lithium battery module of any one of claims 1-3, wherein: The limiting elastic block is in a circular arc shape, and the limiting elastic blocks are symmetrically installed on the surface of the glass-magnesium fireproof plate, and the distance between adjacent two limiting elastic blocks is equal.

7. The lithium battery module of any one of claims 1-3, wherein: The outer side of the box body is provided with a plurality of reinforcing ribs for reinforcing support force.

8. The lithium battery module of any one of claims 1-3, wherein: The patch is composed of an adhesive sheet, and the adjacent two battery blocks are attached through the patch, and one end of the steel shell abuts against the top of the battery block.

9. The lithium battery module of any one of claims 1-3, wherein: The inner surfaces of the drainage groove, the shunt groove and the drainage groove are connected with water-absorbing sponges for absorbing liquid, the shunt grooves are symmetrically installed at both ends of the drainage groove, and the drainage grooves are symmetrically installed at both ends of the shunt groove.

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