CN211957717U

CN211957717U - Battery box

Info

Publication number: CN211957717U
Application number: CN202020288869.1U
Authority: CN
Inventors: 陆守强; 周鹏程; 陈建
Original assignee: Guangdong Shunde Industrial Design Institute
Current assignee: Energy research and demonstration center of Tibet Autonomous Region; Guangdong Shunde Industrial Design Institute
Priority date: 2020-03-10
Filing date: 2020-03-10
Publication date: 2020-11-17
Anticipated expiration: 2030-03-10

Abstract

The utility model provides a battery box relates to the battery box field. The battery box comprises a box body and a battery monomer, wherein the box body comprises a bottom plate, side plates and a top plate, and the bottom plate, the side plates and the top plate enclose an accommodating space for installing the battery monomer; the bottom plate is provided with a positioning structure matched with the battery monomer in a positioning way, the top plate is of a hollow structure, a gas cavity is arranged inside the top plate, the lower side surface of the top plate is provided with a gas guide hole, and the gas cavity is communicated with the accommodating space; an air inlet hole and an air outlet hole are oppositely arranged on the side plate, the air inlet hole is communicated with the air cavity, the air outlet hole is communicated with the accommodating space, an air inlet fan is arranged on the air inlet hole, and an air outlet fan is arranged on the air outlet hole. Through the gas and the battery monomer contact heat transfer of combustion gas in the gas guide hole from the roof, the top is admitted air and is made gaseous flow through inside battery monomer more evenly, has solved the poor problem of the inside runner patency of box to battery monomer by interior and outside in the box has been realized fully, effectual heat dissipation.

Description

Battery box

Technical Field

The utility model relates to a battery box technical field especially relates to a battery box.

Background

The battery box is a common electric storage and energy storage device, and generally includes a box body and a battery module disposed in the box body, where the battery module is formed by connecting a plurality of battery cells in series. In the use, because the external environment temperature difference is big, the battery generates heat etc. reason, need increase heat preservation and heat radiation structure in order to guarantee the normal use of battery in the box.

The Chinese invention patent application with application publication number CN107689436A and application publication number 2018.02.13 discloses a battery box with balanced heating and heat dissipation and a control method of the battery box, and particularly discloses a battery box comprising a box body and a controller, wherein the box body comprises a battery pack, a temperature sensor, a heating plate, an exhaust fan, an air inlet fan and a shell, the battery pack comprises at least one battery monomer, and the temperature sensor is arranged on the battery monomer; the battery compartment is of a hollow structure, and the heat dissipation channel of the hollow structure can accelerate the heat dissipation speed, so that the battery box can dissipate heat uniformly; a battery compartment dividing layer is arranged between two adjacent battery compartments and is of a hollow structure; a plurality of heating plates are arranged between the battery pack and the inner wall of the shell, an exhaust fan is arranged on one side of the shell, and an air inlet fan is arranged on the other side of the shell, which is opposite to the side provided with the exhaust fan; the controller is connected with the battery pack, the heating plate, the exhaust fan and the intake fan.

When the battery box is used, the exhaust fan and the air inlet fan are matched with each other, so that a stable gas flow field can be formed, and the battery box can dissipate heat uniformly; the heating plate is used for heating the battery box in a balanced manner. Although the battery bin and the partition plate are both hollow structures, the battery monomer is arranged in the middle of the battery bin, so that the smoothness of an internal flow passage of the battery bin is poor. When the exhaust fan and the intake fan work, airflow easily flows out directly from the edge position inside the box body, and good heat dissipation effect on the battery cells inside cannot be achieved.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, an object of the present invention is to provide a battery box to solve the problem that the air current in the existing battery box easily flows out directly from the edge position inside the box, and can not play a good heat dissipation effect on the inside battery cell.

The utility model discloses a technical scheme of battery box does:

the battery box comprises a box body and a battery monomer, wherein the box body comprises a bottom plate, side plates and a top plate, and the bottom plate, the side plates and the top plate enclose an accommodating space for installing the battery monomer; the bottom plate is provided with a positioning structure matched with the battery monomer in a positioning mode, the top plate is of a hollow structure, a gas cavity is arranged inside the top plate, the lower side face of the top plate is provided with a gas guide hole, and the gas cavity is communicated with the accommodating space;

an air inlet hole and an air outlet hole are oppositely arranged on the side plate, the air inlet hole is communicated with the gas cavity, the air outlet hole is communicated with the accommodating space, an air inlet fan is installed on the air inlet hole, and an air outlet fan is installed on the air outlet hole.

Has the advantages that: the box includes the bottom plate, curb plate and roof, the downside of roof is equipped with the gas guide hole, the accommodation space intercommunication at inside gas cavity of roof and battery monomer place, and inlet port and exhaust hole mutual disposition are on the curb plate, inlet port and gas cavity intercommunication, exhaust hole and accommodation space intercommunication, thereby formed from the inlet port, gas cavity, accommodation space to exhaust hole's air current passageway, in the accommodation space of battery monomer installation, discharge gas and the battery monomer contact heat transfer in the gas guide hole through following the roof, the top is admitted air and can be made gaseous inside battery monomer of flowing through more evenly, the poor problem of the inside runner patency of box has been solved, thereby realized carrying out fully to the battery monomer in the box from inside to outside, effectual heat dissipation.

Furthermore, the box body is in a cuboid shape, the bottom plate is provided with at least two positioning grooves which are arranged in parallel along the length direction, the single batteries are arranged in the positioning grooves in at least two rows, the interval between every two adjacent rows of single batteries is communicated with the gas cavity to form an airflow channel, and the positioning grooves form a positioning structure which is matched with the single batteries in a positioning way;

the side plates comprise two longitudinal side plates which are arranged at intervals in a direction perpendicular to the length direction and two transverse side plates which are arranged at intervals in a direction perpendicular to the width direction, and the air inlet holes and the air outlet holes are oppositely arranged on the two longitudinal side plates.

Further, the roof includes buckle and lower buckle, go up buckle and buckle releasable connection down, the buckle includes frame and strengthening rib down, the frame with the location fit at free upper portion edge of battery.

Furthermore, the lower buckle plate further comprises a longitudinal support plate connected to the middle of the frame, the air guide holes are longitudinally arranged on the longitudinal support plate at intervals, and the longitudinal support plate and the two adjacent columns of single batteries are correspondingly arranged at intervals.

Furthermore, a lead hole is formed in the frame of the lower buckle plate, a lead groove is correspondingly formed in the upper buckle plate, and a lead connected with the electrode of the battery cell is arranged in the lead hole and the lead groove in a penetrating mode.

Furthermore, the box body further comprises a U-shaped frame, two vertical sections of the U-shaped frame form two longitudinal side plates, the bottom plate is fixedly installed on the horizontal section of the U-shaped frame, and the two transverse side plates are connected between the two vertical sections of the U-shaped frame.

Furthermore, two electric heating plates are further arranged in the box body, and the two electric heating plates are respectively clamped between the two transverse side plates and the single battery.

Furthermore, a soft heat-insulating layer is arranged between the electric heating plate and the transverse side plate.

Furthermore, a transition air pipe is connected between the air inlet and the air chamber, and the section of the transition air pipe is in a contraction shape along the airflow direction; the lower side of the transition air pipe is also provided with a control circuit board which is respectively and electrically connected with the air inlet fan, the exhaust fan, the electric heating plate and the battery monomer.

Furthermore, a heat-conducting silica gel sheet is clamped between the battery monomer and the bottom plate.

Drawings

Fig. 1 is a schematic perspective view of a battery box according to embodiment 1 of the present invention;

FIG. 2 is an exploded view of the battery box of FIG. 1;

FIG. 3 is a perspective view of the lower gusset of FIG. 1;

fig. 4 is a vertical sectional view of the battery case of fig. 1.

In the figure: 1-box body, 10-U-shaped frame, 100-bottom plate, 101-longitudinal side plate, 102-transverse side plate, 103-horizontal section, 104-air inlet hole, 105-air outlet hole, 11-top plate, 110-lower buckle plate, 1100-frame, 1101-reinforcing rib, 1102-longitudinal support plate, 1103-air guide hole, 1104-wire leading hole, 111-upper buckle plate, 1110-wire leading groove, 112-upper cover plate, 12-electric heating plate, 13-soft heat insulation layer, 14-heat conduction silica gel sheet, 2-battery monomer, 3-air inlet fan, 31-transition air pipe, 4-exhaust fan, 41-tail air channel and 5-control circuit board.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

The utility model discloses a concrete embodiment 1 of battery box, as shown in fig. 1 to 4, the battery box includes box 1 and battery monomer 2, box 1 includes bottom plate 100, curb plate and roof 11, bottom plate 100, curb plate and roof 11 enclose into the accommodation space who supplies the installation of battery monomer 2, be equipped with on bottom plate 100 with battery monomer 2 location fit's location structure, roof 11 is hollow structure, the inside of roof 11 has gas cavity, the downside middle part position of roof 11 is equipped with air guide hole 1103, gas cavity and accommodation space intercommunication. In this embodiment, the shape of box 1 is the cuboid, is equipped with two constant head tanks of arranging side by side along length direction on bottom plate 100, and battery monomer 2 is two and arranges in the constant head tank of bottom plate 100, and the constant head tank constitutes and battery monomer 2 location fit's location structure.

Wherein, the width of battery monomer 2 and the width phase-match of constant head tank, battery monomer 2 arranges in the constant head tank side by side along the length direction of bottom plate 100, makes battery monomer 2 reliably install on the bottom plate 100 of box 1 through the constant head tank. And, be equipped with heat conduction silica gel piece 14 between battery monomer 2 and bottom plate 100, heat that heat conduction silica gel piece 14 can produce battery monomer 2 bottom effectively transmits to bottom plate 100 on, realizes heat exchange through the gas contact in bottom plate 100 and the accommodation space to discharge the heat that produces battery monomer 2 bottom from the inside of box 1.

An air inlet hole 104 communicated with the air chamber inside the top plate 11 and an air outlet hole 105 connected with the accommodating space are formed on the side plate, the air inlet hole 104 and the air outlet hole 105 are oppositely arranged, the air inlet hole 104 is provided with an air inlet fan 3, and the air outlet hole 105 is provided with an air outlet fan. In addition, a longitudinal protrusion is arranged between the two positioning grooves of the bottom plate 100, the longitudinal protrusion divides the single batteries 2 in the two positioning grooves to form an interval, and the interval between the two rows of single batteries 2 is communicated with the gas chamber inside the top plate 11 to form a gas flow channel. The intake fan 3 sucks the external air to the intake hole 104, circulates to the air chamber inside the top plate 11 through the intake hole 104, and enters the space between the battery cells 2 through the air guide hole 1103, and heat exchange is performed between the air and the battery cells 2, so that the high temperature generated by the battery cells 2 is discharged through the exhaust hole 105 in the form of hot air.

In order to improve the sealing performance of the air flow, a transition air pipe 31 is connected between the air inlet hole 104 of the side plate and the air chamber inside the top plate 11, the transition air pipe 31 is in a cross section contraction shape along the air flow direction, and a curved flow passage is arranged inside the transition air pipe 31, so that the air can smoothly flow from the air inlet hole 104 to the air chamber inside the top plate 11. Specifically, the lateral plates of the box body 1 comprise two longitudinal lateral plates 101 which are arranged at intervals in the length direction of a vertical direction and two transverse lateral plates 103 which are arranged at intervals in the width direction of a vertical direction, and the air inlet holes 104 and the air outlet holes 105 are oppositely arranged on the two longitudinal lateral plates 101, so that a longitudinally arranged airflow channel is formed between the internal battery cells 2 of the box body 1, the smoothness and the heat exchange efficiency of gas circulation are ensured, and the heat dissipation effect of the whole battery box is improved.

In this embodiment, top plate 11 includes upper buckle plate 111 and lower buckle plate 110, and upper buckle plate 111 is detachably connected to lower buckle plate 110. The lower pinch plate 110 comprises a frame 1100 and four reinforcing ribs 1101, the four reinforcing ribs 1101 are arranged in parallel, and the frame 1100 is matched with the upper edge of the battery cell 2 in a positioning mode. The battery monomer 2 is two and arranges in the constant head tank of bottom plate 100 promptly, and two upper portion edges of battery monomer 2 and the frame 1100 location fit of buckle 110 down play the location support effect to battery monomer 2's lower part, upper portion respectively through the constant head tank of bottom plate 100, the edge 1100 of buckle 110 down, guarantee that battery monomer 2 can be stable, reliable fixed mounting in box 1.

The upper buckle plate 111 is matched with a frame 1100 of the lower buckle plate 110 in a clamping mode, and the upper buckle plate 111 and the lower buckle plate 110 are buckled to form the top plate 11. Moreover, the lower buckle plate 110 further comprises a longitudinal support plate 1102 connected to the middle of the frame 1100, the longitudinal support plate 1102 corresponds to the interval between two rows of the battery cells 2, and the air vents 1103 are longitudinally arranged on the longitudinal support plate 1102 at intervals. Gas guide hole 1103 through vertical backup pad 1102 communicates the inside gas chamber of roof 11 and two intervals between the battery monomer 2, guaranteed that the cold gas that gets into in the gas chamber can circulate to the accommodation space at battery monomer 2 place uniformly, the top is admitted and can be made gaseous flow through inside battery monomer 2 more uniformly, the problem that the inside runner of box is unobstructed poor is solved, it can be in the partial space and the regional circulation of middle part that are close to the border to have guaranteed gaseous, realized that battery monomer 2 in to box 1 is from inside to outside abundant, effectual heat dissipation.

A lead hole 1104 is formed in a frame 1100 of the lower buckle plate 110, a lead groove 1110 is correspondingly formed in the upper buckle plate 111, the lead hole 1104 of the lower buckle plate 110 and the lead groove 1110 of the upper buckle plate 111 are correspondingly arranged, and a lead which is communicated with an electrode of the battery cell 2 is arranged in the lead hole 1104 of the lower buckle plate 110 and the lead groove 1110 of the upper buckle plate 111 in a penetrating manner. Specifically, the lead hole 1104 is arranged on the longitudinal side edge of the frame 1100 of the lower buckle plate 110, the lead groove 1110 is arranged on the corresponding lateral side edge of the upper buckle plate 111, the lead is led out through the lead hole 1104 and the lead groove 1110 after being connected with the electrode of the battery cell 2, and the led-out lead is connected with the control circuit board 5 arranged in the box body 1, so that the lead is smoothly led out from the top plate 11, and the influence of interference of an airflow channel on the heat dissipation effect can be avoided. In addition, an upper cover plate 112 is further arranged on the top plate 11, and the upper cover plate 112 is tightly connected with the two transverse side plates 102 through bolts, so that the structural firmness of the whole battery box is guaranteed.

In order to simplify the internal structure of the cabinet 1, the cabinet 1 further includes a U-shaped frame 10, two vertical sections of the U-shaped frame 10 form two longitudinal side plates 101, and a bottom plate 100 is fixedly mounted on a horizontal section 103 of the U-shaped frame 10. During the use, install battery monomer 2 location in the constant head tank of bottom plate 100 earlier, fix roof 11 on battery monomer 2's upper portion again, then place battery monomer 2, bottom plate 100 and roof 11 whole on the horizontal segment 103 of U-shaped frame 10, play horizontal vertical support to battery monomer 2 through two vertical sections of U-shaped frame 10, bolt fastening connection between two horizontal curb plates 102 and two vertical sections of U-shaped frame 10. Two electric heating plates 12 are further provided in the case 1, and the two electric heating plates 12 are respectively interposed between the lateral side plates 102 and the battery cells 2. And, still be equipped with soft heat preservation 13 between electric heating plate 12 and horizontal curb plate 102, make the heat that electric heating plate 12 produced completely cut off in the inside of box 1 through soft heat preservation 13, prevent when cold weather electric heating plate 12's heat conduction to horizontal curb plate 102 after, directly scatter and disappear to the outside air in, improved battery box's thermal insulation performance.

A control circuit board 5 is further arranged between one of the longitudinal side plates 101 and the battery cell 2, the control circuit board 5 is respectively electrically connected with the air inlet fan 3, the air outlet fan 4, the electric heating plate 12 and the battery cell 2, the synchronous operation of the air inlet fan 3 and the air outlet fan 4 is controlled through the control circuit board 5, and the electric heating plate 12 is controlled to heat the battery cell 2. It should be noted that the control circuit board 5 is specifically a battery management system (abbreviated as "BMS") for preventing the problems of over-charge and over-discharge of the battery and monitoring the operating state of each battery cell 2; the control circuit board 5 and the transition air duct 31 are arranged on the lower side of the longitudinal side plate 101 on the same side, so that the internal space of the box body 1 is fully utilized, and the integration level is higher. Correspondingly, the longitudinal side plate 101 on the other side is provided with the tail air pipe 41, the tail air pipe 41 and the two rows of battery cells 2 are arranged at intervals correspondingly, and high-temperature gas after heat exchange can be smoothly discharged out of the exhaust holes 105 through the tail air pipe 41.

The utility model discloses an other concrete embodiment of battery box, in order to adapt to different user demands, the shape of box is not only limited to the cuboid in concrete embodiment 1, still can design into the cylinder with the shape of box, and the curb plate of cylindrical box is the circumference curb plate, and the radial corresponding position of circumference curb plate is arranged respectively in inlet port and exhaust hole, has saved the assembly step of two vertical curb plates and two horizontal curb plates, adaptable different product appearance demands.

The utility model discloses an other concrete embodiment of battery box, in order to simplify the structure of roof, the roof is not only limited to the split type structure among the concrete embodiment 1, still can design into an organic whole structure with the roof, the middle part of roof has gas chamber promptly, the downside of roof is equipped with the air guide hole that communicates with accommodation space, the downside of roof is equipped with the wiring recess, the wiring recess cooperates with the wire unsmooth of the free electrode of switch-on battery, the wire is laminated and is drawn forth and be connected with control circuit board in the free upside of battery.

In other specific embodiments of the battery box of the present invention, in order to meet different product requirements, the bottom plate is not limited to be arranged with two positioning grooves in parallel along the length direction, but also can be arranged with more than two positioning grooves on the bottom plate according to actual requirements, and the positioning grooves are not limited to extend along the length direction of the bottom plate, and can also be arranged in parallel along the width direction of the bottom plate; correspondingly, the air inlet hole, the air inlet fan, the air outlet hole and the air outlet fan are correspondingly arranged on the transverse side plates, so that a transversely arranged air flow channel is formed in the box body.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A battery box is characterized by comprising a box body and battery monomers, wherein the box body comprises a bottom plate, side plates and a top plate, and the bottom plate, the side plates and the top plate enclose an accommodating space for installing the battery monomers; the bottom plate is provided with a positioning structure matched with the battery monomer in a positioning mode, the top plate is of a hollow structure, a gas cavity is arranged inside the top plate, the lower side face of the top plate is provided with a gas guide hole, and the gas cavity is communicated with the accommodating space;

2. The battery box according to claim 1, wherein the box body is shaped like a cuboid, the bottom plate is provided with at least two positioning grooves arranged in parallel along the length direction, the battery cells are arranged in the positioning grooves in at least two rows, the space between two adjacent rows of battery cells is communicated with the gas chamber to form a gas flow channel, and the positioning grooves form the positioning structure matched with the battery cells in a positioning manner;

3. The battery box of claim 2, wherein the top plate comprises an upper buckle plate and a lower buckle plate, the upper buckle plate and the lower buckle plate are detachably connected, the lower buckle plate comprises a frame and a reinforcing rib, and the frame is matched with the upper edge of the battery cell in a positioning mode.

4. The battery box of claim 3, wherein the lower buckle plate further comprises a longitudinal support plate connected to the middle of the frame, the air holes are longitudinally arranged on the longitudinal support plate at intervals, and the longitudinal support plate is arranged corresponding to the intervals between two adjacent rows of single batteries.

5. The battery box according to claim 3 or 4, wherein the frame of the lower buckle plate is provided with lead holes, the upper buckle plate is correspondingly provided with lead grooves, and leads communicated with the electrodes of the single batteries are arranged in the lead holes and the lead grooves in a penetrating manner.

6. The battery box of claim 2, wherein the box body further comprises a U-shaped frame, wherein the two vertical sections of the U-shaped frame form the two longitudinal side plates, the bottom plate is fixedly mounted on the horizontal section of the U-shaped frame, and the two transverse side plates are connected between the two vertical sections of the U-shaped frame.

7. The battery box of claim 2, wherein two electrical heating plates are disposed in the box body, and the two electrical heating plates are respectively sandwiched between the two lateral side plates and the battery cells.

8. The battery box of claim 7, wherein a soft thermal insulation layer is further disposed between the electric heating plate and the lateral side plates.

9. The battery box of claim 7, wherein a transition air duct is connected between the air inlet hole and the gas chamber, and the transition air duct has a cross section which is contracted along the airflow direction; the lower side of the transition air pipe is also provided with a control circuit board which is respectively and electrically connected with the air inlet fan, the exhaust fan, the electric heating plate and the battery monomer.

10. The battery box of claim 1, wherein a thermally conductive silicone sheet is sandwiched between the battery cells and the bottom plate.