CN218123650U - Power supply device and battery module - Google Patents

Abstract

The utility model relates to a power supply unit and a battery module, wherein the battery module comprises a box body, at least one partition plate and at least two module units; the at least one partition plate is detachably arranged in the box body and used for dividing the inner space of the box body into at least two accommodating cavities, a first limiting structure is arranged on the partition plate, extends towards the accommodating cavities and is used for limiting at least two module units; at least two module units are arranged in the at least two accommodating cavities in a one-to-one correspondence manner. This battery module is through can dismantling to set up at least one baffle in the box, through two at least holding chambeies of two at least module units of this baffle with the inside space separation of box, and the first limit structure through this baffle carries on spacingly to the module unit that is arranged in this holding chamber, and then reducible equipment part, reduce cost simplifies the equipment process, improves the maneuverability and the maintainability of assembly process.

Description

Power supply device and battery module

Technical Field

The utility model relates to a lithium ion battery field, more specifically say, relate to a power supply unit and battery module.

Background

In the related art, the battery module of the power supply device is generally a small module, and generally includes an upper bracket, a lower bracket, and a plurality of battery cells; the plurality of battery cells are assembled between the upper bracket and the lower bracket and form a module unit through series connection or parallel connection; in practical application, when a large-capacity battery module is needed, a plurality of small modules are connected in series or in parallel to form a large module for use, if the plurality of small modules form the large module, the plurality of small modules are generally directly connected in series or in parallel through connecting lines, or a plurality of small modules (namely a plurality of module units) are arranged in a box body and connected through the connecting sheets, the small modules are generally fixed in the box body through structural glue, pressing strips, bolts and the like, the small modules do not generally have limiting structures in the box body, and the small modules are easy to loosen, fall off and the like in the transportation or use process. The battery module in the related art has the disadvantages of complex structure, more parts, complex assembly, high cost, low process operability and maintainability.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in providing a battery module of solving above-mentioned drawback, further provides a modified power supply unit.

The utility model provides a technical scheme that its technical problem adopted is: constructing a battery module comprising a box body, at least one partition plate and at least two module units; the at least one partition plate is detachably arranged in the box body and used for dividing the inner space of the box body into at least two accommodating cavities, a first limiting structure is arranged on the partition plate, extends towards the accommodating cavities and is used for limiting at least two module units; at least two module units are arranged in the at least two accommodating cavities in a one-to-one correspondence manner.

In some embodiments, the housing includes a floor,

the baffle with be provided with first joint structure on the bottom plate, the baffle with the bottom plate passes through first joint structure can dismantle the connection.

In some embodiments, the box body comprises two side plates arranged at two opposite sides of the bottom plate and end plates arranged at two ends of the side plates;

the baffle with be provided with second joint structure between the end plate, the baffle with the end plate passes through second joint structure joint.

In some embodiments, the first limiting structure is disposed on a side of the partition plate disposed opposite to the bottom plate;

the first limiting structure comprises a first limiting clamping hook, and the first limiting clamping hook extends towards the accommodating cavity so as to be hooked on the module unit.

In some embodiments, a second limiting structure is arranged on the side plate and used for limiting the module unit;

the second limiting structure comprises a second limiting hook, and the second limiting hook is arranged on one side of the side plate, opposite to the bottom plate, and is used for hooking the module unit.

In some embodiments, an output electrode support seat is arranged on the box body;

the output pole supporting seat is two, two be provided with positive negative pole sign on the output pole supporting seat respectively.

In some embodiments, the module unit includes a first support, a second support, a plurality of battery cells disposed between the first support and the second support, and a top cover detachably disposed on the second support.

In some embodiments, a cabling channel is disposed on the second bracket;

and/or a connecting structure detachably connected with the top cover is arranged on the second bracket;

and/or a positioning structure matched with the top cover is arranged on the second bracket;

and/or, the battery module further comprises a connecting sheet, the connecting sheet is arranged in the module unit, and a positioning column is arranged on the second support and used for positioning the connecting sheet.

In some embodiments, the module unit further includes a heating structure disposed between the first support and the second support and between the plurality of battery cells.

The utility model discloses still construct a power supply unit, including outer box and set up in at least one in the outer box the battery module.

Implement the utility model discloses a power supply unit and battery module have following beneficial effect: this battery module is through can dismantling to set up at least one baffle in the box, through this baffle with the inside space separation of box for two at least holding chambeies of two at least module units of holding, and set up first limit structure through on this baffle and carry on spacingly to the module unit that is arranged in this holding chamber, and then reducible equipment part, reduce cost simplifies the equipment process, improves the maneuverability and the maintainability of assembly process.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a schematic diagram of a battery module of a power supply apparatus according to some embodiments of the present invention;

fig. 2 is an exploded view illustrating the structure of the battery module shown in fig. 1;

fig. 3 is a schematic structural view of a case of the battery module shown in fig. 2;

fig. 4 is a schematic structural view of a module unit of the battery module shown in fig. 2;

FIG. 5 is an exploded view of the module unit shown in FIG. 4;

FIG. 6 is a schematic view of a first bracket of the module unit shown in FIG. 5;

FIG. 7 is a schematic view of a second bracket of the module unit shown in FIG. 5;

fig. 8 is another angular configuration of the second bracket shown in fig. 7.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 shows some preferred embodiments of the power supply device of the invention. In some embodiments, the power supply device can be used for supplying power to an external device. The power supply device has the advantages of simple and convenient assembly, low assembly cost and simple structure.

As shown in fig. 1 and 2, in some embodiments, the power supply device includes an outer case (not shown) and a battery module; the outer case (not shown) may be used to receive one battery module, but it is understood that in some embodiments, the outer case (not shown) may also be used to receive a plurality of battery modules. The battery module is detachably mounted in the outer case (not shown) and is used for supplying power to external equipment.

As shown in fig. 2 and 3, in some embodiments, the battery module includes a case 10, a separator 20, two module units 30, and a connecting sheet 40. The case 10 is used to house the module unit 20. The partition 20 is detachably installed in the box 10, and is used for dividing the inner space of the box 10 into two accommodating chambers 15. It is understood that in other embodiments, the number of the partition plates 20 is not limited to one, and the number of the partition plates 20 may be multiple. The two module units 20 may be disposed in the two accommodating cavities 15 in a one-to-one correspondence, and the two module units 20 may be electrically connected through a connecting sheet 40. It is understood that in other embodiments, the number of the module unit 30 is not limited to two, and in some embodiments, the number of the module unit 30 may be larger than two. The connection tab 40 may be provided in the two module units 30 for electrically connecting the two module units 30 to form a battery module having a larger capacity.

In some embodiments, the enclosure 10 includes a U-shaped plate 11 and an end plate 12; the U-shaped plate 11 includes a bottom plate 111 and side plates 112, and the bottom plate 111 may have a substantially square shape. The side plates 112 can be disposed on the bottom plate 111 and connected to the bottom plate 111 to form an integral structure, and the number of the side plates 112 is two, and the two side plates 112 can be disposed on two opposite sides of the bottom plate 111 and connected to the bottom plate 111 to form a U-shaped frame structure. The two end plates 12 are respectively disposed at two ends of the side plate 112, and are respectively connected to the two side plates 112, and are connected to the side plates 112 by screws. In some embodiments, the end plate 12 and the U-shaped plate 11 may enclose a cavity forming a rectangular parallelepiped.

In some embodiments, the side panels 112 include a first side panel 112a and a second side panel 112b; the first side plate 112a and the second side plate 112b can be disposed in parallel. In some embodiments, a second limiting structure may be disposed on the first side plate 112a and the second side plate 112b, and the second limiting structure may be used to limit the module unit 30. In some embodiments, the second limiting structure can limit the movement of the module unit 30 in the direction perpendicular to the bottom plate 111 (z-axis direction). In some embodiments, the second limiting structure includes a second limiting hook 1121, the second limiting hook 1121 is disposed on a side of the side plate 112 opposite to the bottom plate 111 and can extend toward the accommodating cavity 15, and when the module unit 20 is installed in the accommodating cavity 15, the second limiting hook 1121 can be hooked on the module unit 30, so as to limit the movement of the module unit 30 in a direction perpendicular to the bottom plate 111. In some embodiments, the first side plate 112a is provided with a connecting hole 1122, and the connecting hole 1122 may be disposed through the thickness direction of the first side plate 112a for connecting with the output pole support 13 through a connecting assembly. Be provided with ligature hole 1123 on this first curb plate 112a, this ligature hole 1123 can be convenient for fixed and the arrangement of pencil, is favorable to the fixed of pencil socket, improves the stability of module sampling. In some embodiments, the second side plate 112b is provided with a first heat dissipation hole 1124, and the first heat dissipation hole 1124 is used for dissipating heat in the module unit 20. In some embodiments, the first heat dissipating holes 1124 may be multiple, and the multiple first heat dissipating holes 1124 may be disposed at intervals on the second side plate 112 b. In some embodiments, the second side panel 112b is provided with a position-limiting base 1125, the position-limiting base 1125 is located at a side close to the bottom panel 111 and protrudes outward for limiting the position of the second side panel in cooperation with an outer box (not shown). In some embodiments, a limit stop 1126 is disposed on the second side panel 112b, and the limit stop 1126 may be disposed at an end of the second side panel 112b that is connected to the end panel 12 and may be outwardly protruded for limiting engagement with the end panel 12.

In some embodiments, the end plate 12 is provided with a second heat dissipation hole 121, the second heat dissipation hole 121 may be a strip-shaped hole, and the second heat dissipation holes 121 are multiple, the multiple second heat dissipation holes 121 may be disposed at intervals, the second heat dissipation holes 121 may be used for dissipating heat in the module unit 30, so as to improve the heat dissipation efficiency of the module unit 30. In some embodiments, the end plate 12 is provided with a connecting plate 123, and the connecting plate 123 may be located at an edge where the end plate 12 is connected to one of the side plates 112, and is protruded along a direction opposite to the side plate 112 for connecting with an outer case (not shown) or connecting with another battery module. In some embodiments, the end plate 12 is provided with a lifting hole 124, and the lifting hole 124 can be used for connecting with a rigging to facilitate the lifting of the battery module.

In some embodiments, the box 10 is provided with two output electrode supporting seats 13, and the two output electrode supporting seats 13 may be arranged side by side on the side plate 112, specifically, they may be arranged on the first side plate 112a and may be connected with the connecting hole on the first side plate 112a by a screw. In some embodiments, the two output electrode supporting seats are respectively provided with an anode and cathode identifier, and the anode and cathode identifiers 131 can be used for distinguishing the anode and cathode of the module conveniently, so as to prevent fire accidents caused by short circuit due to undefined anode and cathode.

In some embodiments, the box 10 is provided with two handles 14, the two handles 14 can be disposed on the first side plate 112a at intervals, specifically, the handles 14 can be fixed on the first side plate 112a by welding, and the movement and transportation of the module can be facilitated by disposing the handles 14.

In some embodiments, the partition 20 may have a length corresponding to that of the box 10, and the partition 20 may be disposed at an interval and parallel to the side plates 112, and may be disposed vertically on the bottom plate 111, and clamped with the bottom plate 111, so as to divide the inner space of the box 10 into two accommodating chambers 15. The two ends of the partition 20 can be snapped into the two end plates 12. The partition 20 can be limited by the module units 30 located at the left and right sides thereof, and can limit the displacement of the module units 30 in the direction perpendicular to the bottom plate 111.

Further, in some embodiments, the partition 20 may include a body 21, and the body 21 is formed in a sheet shape and is disposed lengthwise. The body 21 is provided with a plurality of third heat dissipating holes 211, and the plurality of third heat dissipating holes 211 may be arranged at intervals along the length direction of the body 21. The third heat dissipation holes 211 are provided to accelerate the heat dissipation of the module unit 30.

In some embodiments, the partition 20 and the bottom plate 111 are provided with a first clamping structure, and the partition 20 and the bottom plate 111 can be detachably connected through the first clamping structure. Specifically, the first clamping structure may include a first clamping rib 22 and a first insertion hole 1111, the first clamping rib 22 may be disposed on a long side of the body 21, the number of the first clamping ribs 22 is plural, and the plurality of first clamping ribs 22 may be disposed at intervals along the long side of the body 21 and protrude toward the bottom plate 111. The first insertion holes 1111 can be disposed in one-to-one correspondence with the first ribs 22. When installed, the first clamping rib 22 can be inserted into the first insertion hole 1111, so that the partition 20 can be fixed on the base plate 111.

In some embodiments, a second clamping structure is disposed between the partition 20 and the end plate 12, and the partition 20 and the end plate 12 are clamped by the second clamping structure. Specifically, the second clamping structure includes a second clamping rib 23 and a second insertion hole 122, the second clamping rib 23 can be disposed at two ends of the body 21, and is protruded outwardly along the length direction of the body 21. The second receptacle 122 can be disposed on the end plate 12. When the partition board 20 is assembled, the first clamping ribs 23 can be clamped into the second insertion holes 122, so that the partition board 20 can be clamped and fixed with the end plate 12.

In some embodiments, a first limiting structure is disposed on a side of the partition board 20 opposite to the bottom board 111, and the first limiting structure is used for limiting the module unit 30. In some embodiments, the first limiting hook 24 may be disposed on a side of the body 21 opposite to the first rib 22 and may extend along the side plate 112, which may be hooked on the module unit 30, and specifically, the first limiting hook 24 may be hooked on the upper cover of the module unit 30, so as to realize that the module unit 30 moves in a direction perpendicular to the bottom plate 111.

As shown in fig. 4 and 5, in some embodiments, the module unit 30 includes a first bracket 31, a second bracket 32, a plurality of battery cells 33, and a top cover 34. The first bracket 31 may be parallel to and spaced apart from the second bracket 32. The battery cells 33 may be disposed between the first bracket 31 and the second bracket 32, and two ends of each battery cell may be inserted into the first bracket 31 and the second bracket 32, respectively. The top cover 34 can cover the second bracket 32 and can be detachably disposed with the second bracket 32.

As shown in fig. 6, in some embodiments, a plurality of first limiting grooves 311 may be disposed on the first bracket 31, and the plurality of first limiting grooves 311 may be disposed in one-to-one correspondence with the plurality of battery cells 33, and may be used for partially inserting the battery cells 33, so as to prevent the damage of the protective film and the insulation failure caused by the extrusion of the battery cells 33. In some embodiments, a first limiting block 312 may be disposed on a groove wall of each first limiting groove 311, and the first limiting block 312 may extend along the assembling direction of the battery cell 33, so as to provide limiting and guiding functions, and prevent the battery cell 33 from loosening and displacing in the module unit 30 due to a vibration environment.

As shown in fig. 7 and 8, in some embodiments, the second bracket 32 may be provided with a plurality of second limiting grooves 321, and the plurality of second limiting grooves 321 may be disposed in one-to-one correspondence with the plurality of battery cells 33 and may be used for partially inserting the plurality of battery cells 33, so as to prevent the damage of the protective film and the insulation failure caused by the extrusion of the battery cells 33. In some embodiments, a second limiting block 322 may be disposed on a groove wall of each second limiting groove 321, and the second limiting block 322 may extend along the assembling direction of the battery cell 33, so as to have limiting and guiding functions, and prevent the battery cell 33 from loosening and displacing in the module unit 30 due to a vibration environment. In some embodiments, the second bracket 33 is provided with a wiring groove 323, and the wiring groove 323 can be disposed on a side of the second bracket 33 opposite to the second limiting groove 321, for collecting wires and passing wires, and meanwhile, can prevent the wire harness from being damaged and shorted due to being squeezed, protect the wire harness, enhance the safety of the module unit 30, and facilitate the fixation and arrangement of the wire harness. In some embodiments, the second frame 32 is provided with a positioning structure 324, and the positioning structure 324 can be a positioning block disposed on a side of the second frame 32 opposite to the second limiting groove 321, and the positioning block extends outward along a direction perpendicular to the second frame 32. The positioning block can be used for positioning in cooperation with the top cover 34, so that the top cover 34 and the second bracket 33 can be fixed in an insulating manner. In some embodiments, the second frame 32 is provided with a connecting structure 325 detachably connected to the top cover 34, and the connecting structure 325 can be disposed on a side of the second frame 32 opposite to the second limiting groove 321 and extend toward the top cover 34. In some embodiments, the connecting structure 325 can be a snap that can be snapped to the top cover 34. In some embodiments, the second bracket 32 is provided with a positioning post 326, the positioning post 326 is disposed on a side of the second bracket 32 opposite to the second limiting groove 321, and the positioning post 326 can be used for quick alignment assembly when the connecting sheet 40 is assembled, thereby facilitating realization of automated production and improving production efficiency. In some embodiments, the second bracket 32 is further provided with a void 327, and the void 327 may be disposed corresponding to the pole and the pressure release valve, so that the pole and the pressure release valve can be conveniently mounted, and the insulating protection effect can be achieved, thereby avoiding affecting the pressure release of the battery cell 33.

In some embodiments, the lid 34 includes a cover 341 and a flip cap 342; the cover 341 can be disposed parallel to the second support 32, and can cover the second support 32, and can be positioned and installed by the positioning structure 324. The flip cap 342 can be flipped over and disposed on two long sides of the cover 341, and can be snapped or unbuckled by flipping over the fastener of the connecting structure 325, so as to facilitate the detachment and installation of the top cover 34 and the second bracket 32. It is understood that in other embodiments, the flip 342 can be removed or retained depending on the application.

In some embodiments, the battery cells 33 may be arranged in a matrix, specifically, the battery cells 33 may be arranged in four rows and two rows, and the battery cells 33 may be combined in series and parallel at will. And in some embodiments, the cells 33 are not limited to being arranged in four rows and two columns. The first bracket 31 and the second bracket 33 can improve the universality and flexibility of the module unit 30 in groups, and can be conveniently applied to different scene requirement items.

In some embodiments, the module unit 30 further includes a heating structure disposed between the first support 31 and the second support 32 and between the plurality of battery cells 33, the heating structure may be a heating film, and the temperature control of the module unit 30 can be achieved by disposing the heating structure. It will be appreciated that in other embodiments, the heating structure may be omitted. The module unit 30 may be controlled by a protection board or BMS according to a set temperature to control the heating structure or the cooling system and thus the temperature of the module unit 30.

As further shown in fig. 2, in some embodiments, the connection piece 40 may include a first connection piece 41, a second connection piece 42, and a third connection piece 43, where the first connection piece 41 is a long sheet shape and may connect a plurality of battery cells 33 arranged in the same row. The second connecting piece 42 may include a main body and a plurality of connecting portions disposed on two opposite sides of the main body, the plurality of connecting portions on the two opposite sides of the main body may be disposed corresponding to the two rows of battery cells 33, and the two rows of battery cells 33 disposed adjacently may be connected by the second connecting piece 42. The number of the third connecting pieces 43 is two, and the two third connecting pieces 43 can form positive and negative connecting pieces for connecting the positive and negative electrodes of the module unit 30.

When the power supply apparatus is assembled, the module unit 30 may be assembled first, that is, the first bracket 31 is placed on a horizontal plane, the required battery cells 33 are placed into the first bracket 31 at a time, and then the second bracket 32 is placed on the pole-column surface of the battery cell 33, so as to form a small module, wherein a heating structure may be installed as required. Then, two module units 30 are installed in the box 10, specifically, the U-shaped plate 11 is placed on a horizontal plane, the end plate 12 on one side is fixed on the side plate 112 of the U-shaped plate 11 through the bolt connection, then the partition plate 20 is placed in the U-shaped plate 11 and clamped with the bottom plate 111, and one end of the partition plate is clamped with the end plate 12 to divide the box 10 into two accommodating cavities 15, and finally the two module units 30 are sequentially pushed into the accommodating cavities 15, and the end plate 12 on the other side is fixed on the side plate of the U-shaped plate 11 through the bolt connection, so that a large module is formed. The large module can reduce the total module number, reduce the design difficulty of the connecting sheet 40, shorten the length of the connecting sheet, ensure the reliability of electric connection, reduce parts, facilitate transportation, improve the welding efficiency and reduce the manufacturing cost. After the two-step module assembly is connected, a plurality of connecting pieces 40 can be installed and fixed at corresponding positions of the second support 32, after the electrode string of the battery cell 33 is determined and connected without errors, the laser welding machine platform is clamped and guided through a specific clamp, and welding can be carried out after relevant parameters of the laser welding machine are adjusted. Then, after the welding of the battery module is completed, the arrangement of the voltage acquisition lines and the temperature acquisition lines is carried out, the corresponding wiring can be completed by a wiring layout, the wiring harness is arranged along the wiring groove 323 of the second bracket 32, and the top cover is clamped into the buckle of the second bracket 32 after the arrangement.

It is to be understood that the foregoing examples merely represent preferred embodiments of the present invention, and that the description thereof is more specific and detailed, but not intended to limit the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims (10)

1. A battery module is characterized by comprising a box body (10), at least one partition plate (20) and at least two module units (30); the at least one partition plate (20) is detachably arranged in the box body (10) and is used for dividing the inner space of the box body (10) into at least two accommodating cavities (15), a first limiting structure is arranged on the partition plate (20), extends towards the accommodating cavities (15) and is used for limiting at least two module units (30); at least two module units (30) are arranged in the at least two accommodating cavities (15) in a one-to-one correspondence manner.

2. The battery module according to claim 1, wherein the case (10) includes a bottom plate (111),

baffle (20) with be provided with first joint structure on bottom plate (111), baffle (20) with bottom plate (111) pass through first joint structure can dismantle the connection.

3. The battery module according to claim 2, wherein the case (10) includes two side plates (112) disposed on opposite sides of the bottom plate (111) and end plates (12) disposed at both ends of the side plates (112);

baffle (20) with be provided with second joint structure between end plate (12), baffle (20) with end plate (12) are through second joint structure joint.

4. The battery module according to claim 2, wherein the first limiting structure is disposed on a side of the separator (20) opposite to the bottom plate (111);

the first limiting structure comprises a first limiting clamping hook (24), and the first limiting clamping hook (24) extends towards the accommodating cavity (15) to be hooked on the module unit (30).

5. The battery module according to claim 3, wherein the side plates (112) are provided with second limiting structures for limiting the module unit (30);

the second limiting structure comprises a second limiting hook (1121), and the second limiting hook (1121) is arranged on one side, opposite to the bottom plate (111), of the side plate (112) so as to be hooked on the module unit (30).

6. The battery module according to claim 1, wherein the case (10) is provided with an output electrode support base (13);

output utmost point supporting seat (13) are two be provided with positive negative pole sign (131) on output utmost point supporting seat (13) respectively.

7. The battery module according to claim 1, wherein the module unit (30) comprises a first bracket (31), a second bracket (32), a plurality of cells (33) disposed between the first bracket (31) and the second bracket (32), and a top cover (34) detachably disposed on the second bracket (32).

8. The battery module according to claim 7, wherein the second bracket (32) is provided with a wiring groove (323);

and/or a connecting structure (325) detachably connected with the top cover (34) is arranged on the second bracket (32);

and/or a positioning structure (324) matched with the top cover (34) is arranged on the second bracket (32);

and/or the battery module further comprises a connecting sheet (40), the connecting sheet (40) is arranged in the module unit (30), and a positioning column (326) is arranged on the second support (32) and used for positioning the connecting sheet (40).

9. The battery module according to claim 7, wherein the module unit (30) further comprises a heating structure disposed between the first support (31) and the second support (32) and between the plurality of battery cells (33).

10. A power supply device, comprising an outer case, and at least one battery module according to any one of claims 1 to 9 disposed in the outer case.

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