CN220604846U - Battery box - Google Patents

Abstract

The utility model discloses a battery box, comprising: the box body is opened at one side and is internally provided with a containing groove; the cover body is covered on one open side of the box body; the battery cores are positioned in the accommodating cavity; the limiting piece is positioned in the accommodating cavity and used for limiting the battery cell; the battery cell comprises a battery cell, a limiting piece and a battery cell, wherein the inner wall of the battery cell is provided with a first guide structure along the thickness direction of the battery cell, the battery cell is provided with a second guide structure corresponding to the first guide structure, and the limiting piece is used for compressing the battery cell which is expanded in the battery cell accommodating cavity along the thickness direction of the battery cell. According to the utility model, the first guide structure is designed in the box body, and the second guide structure is designed on the battery core, so that the quick stacking and assembly of the battery core can be realized, the compatibility of different battery core thicknesses can be realized, the allowable range of the battery core thickness tolerance is increased, the yield of the battery core material can be improved, and meanwhile, the expansion force generated by the battery core can be restrained during the charging and discharging of the battery core through the limiting piece, and the cycle life of the battery core is prolonged.

Description

Battery box

Technical Field

The utility model relates to the technical field of battery boxes, in particular to a battery box.

Background

Along with the continuous promotion of energy supply in China, the development of propulsion energy is changed from extensive type to high-quality development, and in order to further solve the problem of energy fluctuation, energy storage and other technologies are integrated into power grid optimization, energy storage equipment is introduced into a base station, so that the utilization rate of a battery is effectively improved, the power supply cost is reduced, and a certain influence is generated on an energy consumption mode.

The existing energy storage equipment comprises a battery box and a battery pack, wherein the internal battery cells are mostly in a screw grouping structure or a BSB welding process, manual assembly and fixation are used during battery cell assembly, and the assembly is complicated, wherein the thickness of the battery cells has a certain influence on the battery cell assembly, for example, the battery cells are too thick or different in thickness, so that the weight increase of the battery cells can cause difficulty in assembly; before the battery cells are assembled, the battery cells are easily misplaced when the battery cells are assembled due to the transportation and the transportation of products, and the service life of the battery is greatly reduced.

Disclosure of Invention

In order to overcome at least one of the drawbacks of the prior art described above, the present utility model provides a battery compartment. The battery cell assembly device can solve the self assembly efficiency, can compress the battery cell while accommodating the battery cell, improves the stability of the battery cell, reduces the complexity of battery cell assembly, and ensures the service life of the battery cell.

The utility model adopts the technical proposal for solving the problems that:

a battery box, comprising: the box body is opened at one side and is internally provided with a containing groove; the cover body is covered on one open side of the box body; the battery cores are positioned in the accommodating cavity; the limiting piece is positioned in the accommodating cavity and used for limiting the battery cell; the battery cell comprises a battery cell, a limiting piece and a battery cell, wherein the inner wall of the battery cell is provided with a first guide structure along the thickness direction of the battery cell, the battery cell is provided with a second guide structure corresponding to the first guide structure, and the limiting piece is used for compressing the battery cell which is expanded in the battery cell accommodating cavity along the thickness direction of the battery cell.

Through adopting above-mentioned scheme, can provide the guide effect for the stack assembly of electric core through first guide structure, simultaneously the locating part can restrict the tip of electric core for compress tightly and fix the electric core, the expansion force that the suppression electric core produced in cyclic process.

Further, the limiting piece comprises a first limiting piece and a second limiting piece, the first limiting piece is fixed in the accommodating cavity, the second limiting piece is detachably connected to one end of the first limiting piece, and the battery cell is located between the first limiting piece and the second limiting piece.

Through adopting above-mentioned scheme, through adjusting the second locating part, the interval distance between adjustable first locating part and the second locating part to can adjust the pretightning force that realizes the electric core group according to self thickness and the quantity of electric core.

Further, the first limiting piece comprises an end plate and two side plates, the end plate, the side plates and the second limiting piece are all enclosed to form a circuit core cavity, and the first guide structure is located in the circuit core cavity.

Through adopting above-mentioned scheme, through forming the battery chamber, can carry out spacingly simultaneously to four lateral walls of battery, improve spacing effect.

Further, the first guide structure is a guide rail, and the second guide structure is a groove; or the first guiding structure is a groove, and the second guiding structure is a guide rail.

Through adopting above-mentioned scheme, can provide the guide effect for the installation of stacking of electric core through first guide structure and second guide structure, can effectively prevent electric core assembly mistake and the electric core in transit takes place horizontal displacement.

Further, two surfaces of the battery core, which expand along the thickness direction of the battery core, are expansion surfaces, the expansion surfaces of the battery core are provided with heat conducting sheets, and a heat conducting module is further arranged between the heat conducting sheets of every two adjacent battery cores.

Through adopting above-mentioned scheme, the accessible thermal-insulated piece carries out the thermal-insulated between the electric core, and a small amount of unable isolated heat is transmitted the back, absorbs and dispels the heat through heat conduction module.

Further, a drainage plate connected with the limiting piece is arranged on one side of the electrode of the battery cell, an installation table is arranged on the drainage plate, inclined plates inclining downwards are arranged on two sides of the installation table, a drainage channel is formed at the bottom end of each inclined plate, and a plurality of electrode holes used for being connected with the electrode are formed in the installation table.

Through adopting above-mentioned scheme, the drainage board can take place the battery core and take place thermal runaway spun electrolyte and drain and collect, prevents to cause the influence to other battery cores.

Further, the drainage plate is provided with a drainage port communicated with the drainage channel.

Through adopting above-mentioned scheme, can discharge the electrolyte of collecting through setting up the escape orifice.

Further, a fire-fighting module is arranged in the guide channel.

Through adopting above-mentioned scheme, through setting up fire control module, can put out a fire fast when the battery takes place thermal runaway, form multilayer protection.

Further, a battery management system is arranged between the box body and the limiting piece, and a detachable maintenance panel is arranged on the box body corresponding to the battery management system.

Through adopting above-mentioned scheme, through setting up maintenance panel at the box at battery management system place, can avoid the dismantlement of case lid, the operation of changing battery management system is directly carried out from maintenance panel department, improves the maintenance convenience.

Further, a handle structure is provided on the service panel.

Through adopting above-mentioned scheme, be favorable to the holistic transport of box.

In summary, the battery box provided by the utility model has the following technical effects:

1. through designing the first guide structure in the box body and designing the second guide structure on the battery cell, the quick stacking and assembly of the battery cell can be realized, the compatibility of different battery cell thicknesses can be realized, the allowable range of the battery cell thickness tolerance is increased, the yield of the battery cell material can be improved, meanwhile, the expansion force generated by the battery cell can be restrained when the battery cell is charged and discharged through the limiting piece, and the cycle life of the battery cell is prolonged;

2. the integrated design of the box body is realized, related sheet metal parts such as end plates in the traditional battery module are reduced, the assembly difficulty of the battery cell is reduced, the whole weight of the box body is optimized, and the material cost and the personnel production cost are greatly reduced;

3. by arranging the drainage plate on the electrode of the battery cell, the sprayed electrolyte is drained, so that the risk of thermal runaway can be effectively reduced;

4. the heat insulation sheets are arranged on the two expansion surfaces of the battery cell, and the heat is absorbed by the heat conduction module, so that the safety and reliability of the product can be improved, and the heat spreading phenomenon is avoided;

5. through setting up the maintenance board on the box, can dismantle the maintenance board when the battery appears unusual and change battery management system, need not whole cluster and disassemble.

Drawings

FIG. 1 is a schematic diagram of an explosion structure according to an embodiment of the present utility model;

fig. 2 is a schematic view of an internal structure of a case according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of a drainage plate structure according to an embodiment of the present utility model;

fig. 4 is a schematic diagram of a cell assembly structure according to an embodiment of the present utility model;

fig. 5 is a schematic diagram of a completed cell assembly structure according to an embodiment of the present utility model.

Wherein the reference numerals have the following meanings: 1. a case; 11. a receiving groove; 12. a recessed platform; 13. a heat dissipation part; 2. a cover body; 3. a limiting piece; 31. a first limiting member; 311. an end plate; 312. a side plate; 32. a second limiting piece; 33. a die cavity; 4. a battery cell; 41. an electrode; 42. a heat conductive sheet; 43. a heat conduction module; 5. a first guide structure; 6. a second guide structure; 7. a battery management system; 8. maintaining the panel; 81. a handle; 9. a drainage plate; 91. a mounting table; 92. an electrode hole; 93. an inclined plate; 94. a flow guiding channel; 95. a drain port; 10. and a fire module.

Detailed Description

For a better understanding and implementation, the technical solutions of the embodiments of the present utility model will be clearly and completely described and discussed below in conjunction with the accompanying drawings, and it is apparent that what is described herein is only a part, but not all, of the examples of the present utility model, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present utility model are within the scope of protection of the present utility model.

For the purpose of facilitating an understanding of the embodiments of the present utility model, reference will now be made to the drawings, by way of example, of specific embodiments, and the various embodiments should not be construed to limit the embodiments of the utility model.

In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

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 utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

1-5, the embodiment 1 of the utility model discloses a battery box, which comprises a box body 1, a cover body 2, a limiting piece 3 and a plurality of battery cells 4, wherein one side of the box body 1 is open, an accommodating groove 11 is formed in the interior of the box body, the cover body 2 is covered on one open side of the box body 1, a concave platform 12 is arranged on the open side of the box body 1, and the cover body 2 is locked to the concave platform 12 through screws to complete the assembly of the cover body 2; the battery cell 4 is positioned in the accommodating cavity; the limiting piece 3 is positioned in the accommodating cavity and is used for limiting the battery cell 4; wherein, hold the intracavity wall and be provided with along the first guide structure 5 of electric core 4 thickness direction, electric core 4 is provided with second guide structure 6 corresponding first guide structure 5, locating part 3 is used for compressing tightly and holds the electric core 4 of intracavity along self thickness direction inflation, can provide the guide effect for the stack assembly of electric core 4 through first guide structure 5, simultaneously locating part 3 can restrict the tip of electric core 4 for compress tightly and fix electric core 4, restrain the expansion force that electric core 4 produced in the cyclic process.

It should be noted that, the connection mode between the case 1 and the cover 2 is detachable connection, so the connection mode is not limited to screw locking; the number of the first guiding structures 5 in the accommodating cavity can be multiple, the number of the second guiding structures 6 on the battery cells 4 is consistent with the number of the first guiding structures 5, the stacking number of the battery cells 4 is not limited, at least one first guiding structure 5 and one second guiding structure 6 exist between each battery cell 4 and the accommodating cavity, the first guiding structure 5 can be located on the side wall of the accommodating cavity and the bottom wall of the accommodating cavity, and meanwhile, the position of the second guiding structure 6 on the battery cells 4 corresponds to the first guiding structure 5.

In some embodiments, the outer side wall of the case 1 is provided with a heat dissipation portion 13, and the heat dissipation portion 13 is provided with a plate fin-shaped heat dissipation plate for providing a heat dissipation effect for the battery cell 4.

Specifically, if the open side of the case 1 is set to face upwards, the cover 2 is located on the top surface of the case 1, the first guiding structure 5 is located on the side wall of the bottom surface of the accommodating cavity of the case 1, the electrode 41 of the battery cell 4 faces the cover 2, the second guiding structure 6 is located on the bottom surface of the battery, the limiting member 3 includes a first limiting member 31 and a second limiting member 32, the first limiting member 31 is located at one end of the plurality of stacked battery cells 4 and can serve as an end plate 311, and the first limiting member 31 is located in the accommodating cavity and is fixedly connected with the case 1, including but not limited to welding, bonding, integral fixing or screw fixing; the first limiting part 31 comprises an end plate 311 and two side plates 312, the end plate 311, the side plates 312 and the second limiting part 32 are all enclosed to form a battery core cavity 33, the first guide structure 5 and the battery core 4 are all located in the battery core cavity 33, and the four side walls of the battery can be simultaneously limited through forming a battery cavity, so that the limiting effect is improved. The second limiting piece 32 can slide along the thickness direction of the battery cells 4, and is used for adjusting the range of pressing the battery cells 4 according to the thickness and the number of the battery cells 4, and the second limiting piece 32 is fixed on the two side plates 312 through screw locking after sliding to determine the position, and serves as an end plate 311 on the other side of the plurality of battery cells 4.

In an embodiment, the limiting member 3 may only include the second limiting member 32, one end of the case 1 may serve as an end plate 311 on one side of the plurality of electric cells 4, the second limiting member 32 serves as an end plate 311 on the other side, a locking structure is disposed between the second limiting member 32 and the side wall, the electric cells 4 may be locked by sliding the second limiting member 32, and then fixed to the side wall of the case 1 through screws, and by adjusting the second limiting member 32, the number of stacked electric cells 4 may be adjusted, so that the pretightening force of the electric cells 4 in groups may be achieved by adjusting the thickness and the number of the electric cells 4.

In this embodiment 1, the first guiding structure 5 is a semicircular guide rail, and the second guiding structure 6 is a semicircular groove, so that a guiding effect can be provided for stacking and mounting the battery cells 4 through the first guiding structure 5 and the second guiding structure 6, and assembly errors of the battery cells 4 and horizontal displacement of the battery cells 4 during transportation can be effectively prevented. In other embodiments, the first guiding structure 5 may be a guide rail or a groove; the second guiding structure 6 may be a groove or a guide rail, and when two sets of guiding structures are provided between the battery cell 4 and the case 1, one of the first guiding structures 5 may be set as a guide rail, and the other first guiding structure 5 is set as a groove, and specific structures of the guide rail and the groove may correspond to each other and be clamped, so that the shapes of the two structures are not limited in this embodiment.

In this embodiment 1, two surfaces of the battery cells 4 expanding along the thickness direction thereof are set as expansion surfaces, and the expansion surfaces of the battery cells 4 are provided with heat conducting fins 42, and a heat conducting module 43 is further provided between the heat conducting fins 42 of each two adjacent battery cells 4, so that heat insulation between the battery cells 4 can be performed through the heat insulating sheets, and after a small amount of heat which cannot be insulated is transferred, the heat is absorbed and dissipated through the heat conducting module 43. The heat conducting module 43 is a box structure with an open top surface and an open bottom surface, a plurality of gas cavity structures are formed inside the heat conducting module through a plurality of inclined baffles, and the area and the shape of each gas cavity may be the same or different, which is not specifically limited in this embodiment.

Be provided with battery management system 7 between box 1 and locating part 3, box 1 corresponds battery management system 7 and is provided with detachable maintenance panel 8, through setting up maintenance panel 8 at the box 1 that battery management system 7 is located, can avoid the dismantlement of case lid, directly follows maintenance panel 8 and carries out the operation of changing battery management system 7, improves the maintenance convenience, be provided with handle 81 structure on the maintenance panel 8, be favorable to the holistic transport of box 1. In this embodiment 1, the maintenance panel 8 is disposed on a side wall of the case 1 near the second limiting member 32, and is fastened by a screw or a clamping connection.

In some embodiments, a drainage plate 9 connected with the limiting member 3 is disposed on one side of the electrode 41 of the electric core 4, an installation table 91 is disposed on the drainage plate 9, a plurality of electrode holes 92 used for being connected with the electrode 41 are disposed on the installation table 91, the motor holes are linearly distributed, the number of the installation tables 91 is consistent with the number of stacked columns of the electric cores 4, inclined plates 93 inclined downwards are disposed on two sides of the installation table 91, a drainage channel 94 is formed at the bottom end of each inclined plate 93, so that the drainage plate 9 forms a roof structure, when thermal runaway occurs in the electrode 41 on the installation table 91, sprayed electrolyte flows to the inclined plates 93 on two sides of the installation table 91 and flows to the drainage channel 94 along the inclined plates 93, and the electrolyte sprayed out of the thermal runaway of the electric core 4 can be drained and collected, so that influence on other electric cores 4 is prevented. The drainage plate 9 lateral wall be provided with drainage 95 of drainage 94 intercommunication, can discharge the electrolyte of collecting through setting up drainage 95, the drainage 95 can directly discharge outside box 1, also can reserve certain space in the holding chamber of box 1 and deposit electrolyte, and this space needs to keep apart with electric core 4, prevents parts such as electrolyte and electric core 4, aluminium row contact.

The drainage plate 9 is made of a material that is resistant to the high temperature, such as mica sheets.

In some embodiments, the fire-fighting module 10 is further disposed in the drainage channel 94, the fire-fighting module 10 may be made by wrapping perfluoro-hexanone with a high-temperature melting material, or a triggering fire-extinguishing device may be used, and the fire-fighting module 10 is not specifically limited, so that the fire can be quickly extinguished when the battery is out of control, thereby forming a multi-layer protection.

In summary, the battery box provided by the utility model has the following technical effects:

1. through designing the first guide structure 5 in the box body 1 and designing the second guide structure 6 on the battery cell 4, the quick stacking and assembly of the battery cells 4 can be realized, the compatibility of different thicknesses of the battery cells 4 can be realized, the allowable range of the thickness tolerance of the battery cells 4 is increased, the material yield of the battery cells 4 can be improved, meanwhile, the expansion force generated by the battery cells 4 can be restrained when the battery cells 4 are charged and discharged through the limiting piece 3, and the cycle life of the battery cells 4 is prolonged;

2. the integrated design of the box body 1 is realized, guan Banjin parts such as an end plate 311 and the like in the traditional battery module are reduced, the assembly difficulty of the battery cell 4 is reduced, the whole weight of the box body 1 is optimized, and the material cost and the personnel production cost are greatly reduced;

3. by arranging the drainage plate 9 on the electrode 41 of the battery cell 4, the sprayed electrolyte is drained, so that the risk of thermal runaway can be effectively reduced;

4. by arranging the heat insulation sheets on the two expansion surfaces of the battery cell 4 and absorbing heat through the heat conduction module 43, the safety and reliability of the product can be improved, and the heat spreading phenomenon can be avoided;

5. through setting up the maintenance board on box 1, can dismantle the maintenance board when the battery appears unusual and change battery management system 7, need not whole cluster and disassemble.

The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims (10)

1. A battery box, comprising:

the box body (1), one side of the box body (1) is open, and the interior of the box body is provided with a containing groove (11);

the cover body (2) is covered on one open side of the box body (1);

the battery cells (4) are positioned in the accommodating cavity;

the limiting piece (3), the limiting piece (3) is positioned in the accommodating cavity and used for limiting the battery cell (4);

the battery cell (4) is provided with a second guide structure (6) corresponding to the first guide structure (5), and the limiting piece (3) is used for compressing the battery cell (4) expanding in the accommodating cavity along the thickness direction of the battery cell.

2. A battery box according to claim 1, wherein the limiting member (3) comprises a first limiting member (31) and a second limiting member (32), the first limiting member (31) is fixed in the accommodating cavity, the second limiting member (32) is detachably connected to one end of the first limiting member (31), and the battery cell (4) is located between the first limiting member (31) and the second limiting member (32).

3. A battery box according to claim 2, wherein the first limiting member (31) comprises an end plate (311) and two side plates (312), the end plate (311), the side plates (312) and the second limiting member (32) are all enclosed to form a cell cavity (33), and the first guiding structure (5) is located in the cell cavity (33).

4. A battery compartment according to claim 1, characterized in that the first guiding structure (5) is a guide rail and the second guiding structure (6) is a groove; or the first guide structure (5) is a groove, and the second guide structure (6) is a guide rail.

5. A battery box according to claim 1, characterized in that, two surfaces of the electric core (4) expanding along the thickness direction are set as expansion surfaces, the expansion surfaces of the electric core (4) are provided with heat conducting sheets (42), and a heat conducting module (43) is further arranged between the heat conducting sheets (42) of every two adjacent electric cores (4).

6. A battery box according to any one of claims 1-5, characterized in that a drainage plate (9) connected with a limiting piece (3) is arranged on one side of an electrode (41) of the battery core (4), a mounting table (91) is arranged on the drainage plate (9), inclined plates (93) inclined downwards are arranged on two sides of the mounting table (91), a drainage channel (94) is formed at the bottom end of each inclined plate (93), and a plurality of electrode holes (92) used for being connected with the electrode (41) are formed in the mounting table (91).

7. A battery compartment according to claim 6, characterized in that the drainage plate (9) is provided with a drain opening (95) communicating with a drainage channel (94).

8. The battery box according to claim 6, wherein a fire module (10) is further provided in the drain (94).

9. A battery compartment as claimed in any one of claims 1-5, characterized in that a battery management system (7) is arranged between the compartment (1) and the limiting member (3), the compartment (1) being provided with a detachable service panel (8) in correspondence of the battery management system (7).

10. A battery compartment according to claim 9, characterized in that the service panel (8) is provided with a handle (81) structure.