CN216597890U

CN216597890U - Lithium battery module and lithium battery

Info

Publication number: CN216597890U
Application number: CN202220054554.XU
Authority: CN
Inventors: 张贺鹏
Original assignee: Zhejiang Mingpeng New Energy Technology Co ltd
Current assignee: Zhejiang Mingpeng New Energy Technology Co ltd
Priority date: 2022-01-06
Filing date: 2022-01-06
Publication date: 2022-05-24
Anticipated expiration: 2032-01-06

Abstract

The utility model belongs to the technical field of the production technique of battery and specifically relates to a lithium battery module and lithium cell is related to, a lithium battery module of this application includes support, two nickel piece subassemblies and a plurality of battery monomer, has seted up a battery chamber in the support, and battery monomer is a group battery at battery intracavity align to be, and two nickel piece subassemblies compress tightly in the relative both sides of group battery through the support, and each nickel piece subassembly includes a nickel piece body, nickel piece body and the free anodal and/or negative pole butt of battery. The utility model provides a lithium battery includes shell and a plurality of foretell lithium battery module, has seted up a cavity in the shell, and a plurality of lithium battery module all locate in the cavity. The utility model provides a lithium battery module makes the connected mode easy operation of nickel piece and group battery and has good installation stability, can effectively reduce the condition that the desoldering appears after using a period in the use of its lithium cell that makes things convenient for the processing and the maintenance of lithium cell.

Description

Lithium battery module and lithium battery

Technical Field

The application relates to the technical field of battery production, in particular to a lithium battery module and a lithium battery.

Background

Lithium batteries are widely used in various industries, such as electric vehicles, hybrid power plants, and marine rail transportation. Especially, with the development of electric automobiles, the application of lithium batteries is more extensive.

The existing lithium battery generally comprises a shell, a battery cavity is formed in the shell, a lithium battery pack is arranged in the battery cavity and comprises two nickel sheets and a plurality of battery monomers, the battery monomers are arranged into the battery pack according to the output specification requirement, and the two nickel sheets are respectively arranged on two opposite sides of the battery pack and connected with the positive electrode or the negative electrode of the battery monomers.

In view of the above-mentioned related technologies, the nickel plate is generally connected to the positive/negative electrodes of the battery cell by spot welding, and since the external plating layers at the positive and negative ends of the battery cell do not have a uniform material standard, when spot welding the nickel plate, the corresponding melting points of the plating layer and the nickel plate are different due to the different materials between the plating layer and the nickel plate, which results in difficulty in spot welding the positive and negative electrodes of the nickel plate and the battery, and the lithium battery manufactured by using the method may have a desoldering condition after being used for a period of time.

Disclosure of Invention

For the processing and the maintenance of lithium cell, this application provides a lithium cell module and lithium cell, and it makes things convenient for nickel piece and group battery to carry out the dismouting, reduces the lithium cell and still can appear the condition of desoldering after using a period.

In a first aspect, the present application provides a lithium battery module, which adopts the following technical scheme:

the utility model provides a lithium battery module, includes support, two nickel piece subassemblies and a plurality of battery monomer, a battery chamber has been seted up in the support, the battery monomer is in battery chamber align to grid is a group battery, two the nickel piece subassembly passes through the support compresses tightly the relative both sides of group battery, each the nickel piece subassembly includes a nickel piece body, the nickel piece body with the free anodal and/or negative pole butt of battery.

By adopting the technical scheme, the battery monomers are connected in series or in parallel to form the battery pack, the nickel sheet assemblies are pressed on the two opposite sides of the battery pack by utilizing the bracket, so that the nickel sheet body is abutted against the positive electrode and/or the negative electrode of the battery monomers, the pressing connection mode is simple to operate and has good installation stability, and the condition of desoldering of the prepared lithium battery after the lithium battery is used for a period of time can be effectively reduced; in addition, after the lithium battery is used for a period of time, the single battery and the nickel sheet body can be respectively overhauled or replaced, and maintenance is convenient.

Preferably, the nickel sheet assembly further comprises a plurality of springs, the springs correspond to the battery monomers one to one, one ends of the springs are connected to one side, away from the battery monomers, of the nickel sheet body, and the other ends of the springs are abutted to the support.

Through adopting above-mentioned technical scheme, be connected with on the nickel sheet subassembly with the spring of battery monomer one-to-one, spring and support offset, the support compresses tightly the nickel sheet subassembly in the both sides of group battery, the spring receives the extrusion and produces elastic deformation back, the elasticity of spring pushes the nickel sheet body to the both sides of group battery, can make the both sides of nickel sheet body and group battery hug closely, guarantees group battery and this body coupling's of nickel stability.

Preferably, the nickel sheet body includes a plurality of butt pieces and a plurality of connecting rod, butt piece with battery monomer one-to-one, the spring correspondence is connected on the butt piece, connect as an organic whole through the connecting rod between the butt piece.

Through adopting above-mentioned technical scheme, the free one side of battery of every butt piece butt, every spring action is in a butt piece, can guarantee that the free one side homoenergetic of every battery offsets through spring and a butt piece, connects as a whole through the connecting rod between the butt piece, can be a group battery with a plurality of battery monomer connections.

Preferably, the bracket comprises a first shell and a second shell, and the first shell and the second shell are clamped.

Through adopting above-mentioned technical scheme, first casing and second casing joint, when installing lithium battery module, can make things convenient for lithium battery module's installation with first casing and second casing butt joint. After the lithium battery module used for a period of time, can unpack first casing and second casing apart, overhaul and change battery monomer or nickel piece subassembly, convenient maintenance.

Preferably, the first casing is provided with a first groove, the second casing is provided with a second groove, and the first groove and the second groove are in butt joint to form the battery cavity when the first casing and the second casing are clamped.

Through adopting above-mentioned technical scheme, first recess and the butt joint of second recess form the battery chamber, and group battery and nickel piece subassembly are installed in the battery chamber, provide installation space for group battery and nickel piece subassembly from this.

Preferably, a plurality of arc-shaped plates attached to the peripheral surface of the battery monomer are arranged on the first shell at intervals.

Through adopting above-mentioned technical scheme, be equipped with the arc with the global laminating of battery monomer on the first casing, the arc can be spacing battery monomer in the battery chamber, makes the difficult condition that takes place the slope and lead to breaking away from with the butt joint board of battery monomer.

In a second aspect, the present application provides a lithium battery, which adopts the following technical scheme:

a lithium battery comprises a shell and a plurality of lithium battery modules, wherein a cavity is formed in the shell, and the lithium battery modules are installed in the cavity.

Through adopting above-mentioned technical scheme, can make the lithium cell set for to connect the lithium cell module according to required specification requirement through the shell and form a whole and use.

Preferably, the housing comprises a box body and a cover body, the cavity is arranged in the box body, and the cover body covers one side of the box body.

Through adopting above-mentioned technical scheme, a plurality of lithium battery module are installed in the cavity of box, and box and lid close, make things convenient for the installation of lithium cell. After the use for a period of time, can open the lid and take out inner structure and overhaul, convenient maintenance.

Preferably, the shell further comprises a limiting ring, the limiting ring is tightly pressed between the box body and the cover body, and the lithium battery module is limited in the cavity by the limiting ring.

Through adopting above-mentioned technical scheme, a plurality of lithium battery module are installed in the cavity, and spacing lithium battery module is in the cavity through the spacing ring, and the difficult condition that takes place lithium battery module and remove or incline in the cavity guarantees in the use of lithium cell, the stability that lithium battery module connects.

Preferably, an insulating pad is arranged between every two adjacent lithium battery modules.

Through adopting above-mentioned technical scheme, insulating the pad and establishing between per two adjacent lithium battery module, can completely cut off two adjacent lithium battery module, can play insulating protective action to each lithium battery module, make the difficult condition that takes place the contact short circuit between two adjacent lithium battery module.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the lithium battery module of this application is connected nickel piece subassembly and group battery through the connected mode that compresses tightly, makes things convenient for the processing and the maintenance of this lithium battery module, also is difficult for taking place the condition that the nickel piece body breaks away from the group battery both sides in the use.

2. The utility model provides a be connected with on the nickel piece subassembly with the spring of battery monomer one-to-one, support through the support and press the spring, the elasticity that utilizes the deformation of spring to produce compresses tightly the nickel piece body in the group battery both sides, its simple structure guarantees group battery and this body coupling's of nickel piece stability.

3. The utility model provides a nickel piece body includes the butt piece with the monomer one-to-one of battery, and the spring correspondence is connected on the butt piece, makes every spring action in a butt piece, guarantees the butt of every butt piece and monomer one side of battery, and the butt piece passes through the connecting rod to be connected as a whole, can be a group battery with a plurality of battery monomer connections.

Drawings

Fig. 1 is a schematic diagram illustrating an explosion structure of a lithium battery module according to an embodiment of the present disclosure.

Fig. 2 is a partial exploded view of a lithium battery module according to an embodiment of the present disclosure.

Fig. 3 is an enlarged view of fig. 2 at a.

Fig. 4 is an exploded schematic view of a lithium battery module according to an embodiment of the present application.

Fig. 5 is a schematic diagram of an explosion structure of a lithium battery according to the second embodiment of the present application.

Fig. 6 is a partial exploded view of a lithium battery according to a second embodiment of the present invention.

Description of reference numerals: 1. a support; 11. a first housing; 111. a first groove; 1111. a circular groove; 112. a first column; 1121. a clamping groove; 113. an arc-shaped plate; 12. a second housing; 121. a second groove; 122. a second cylinder; 1221. clamping the bulges; 2. a nickel plate assembly; 21. a nickel sheet body; 211. abutting the sheet; 212. a connecting rod; 22. a spring; 3. a battery cell; 4. a battery cavity; 5. a battery pack; 6. a housing; 61. a box body; 611. a notch; 62. a cover body; 7. a lithium battery module; 8. an insulating pad; 9. a limit ring.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

Example one

The embodiment of the application discloses a lithium battery module 7, refer to fig. 1, including support 1, two nickel piece subassemblies 2 and a plurality of battery monomer 3.

The bracket 1 comprises a first shell 11 and a second shell 12, wherein a first groove 111 is formed in the first shell 11, a second groove 121 is formed in the second shell 12, and when the first shell 11 is in butt joint with the second shell 12, the first groove 111 and the second groove 121 are in butt joint to form a battery cavity 4. A plurality of battery cells 3 are arranged uniformly to form a battery pack 5 which is mounted in the battery cavity 4. In this embodiment, a lithium battery module 7 including twenty battery cells 3 is specifically exemplified, and the twenty battery cells 3 are uniformly arranged into a square array type battery pack 5. The nickel plate assemblies 2 are respectively arranged on two opposite sides of the battery pack 5, and the nickel plate assemblies 2 are respectively pressed on two opposite sides of the battery pack 5 through the first groove 111 and the second groove 121.

The pressing connection mode is simple to operate and has good installation stability, and the condition that the lithium battery manufactured by the pressing connection mode is desoldered after being used for a period of time can be effectively reduced. In addition, after the lithium battery is used for a period of time, the single battery 3 and the nickel sheet body 21 can be overhauled or replaced respectively, and maintenance is convenient.

Combine fig. 2, every nickel sheet subassembly 2 includes nickel sheet body 21 and a plurality of spring 22, and nickel sheet body 21 and battery monomer 3's positive pole and/or negative pole butt, and the one side of keeping away from battery monomer 3 at nickel sheet body 21 is connected to spring 22's one end, and spring 22's the other end offsets with first casing 11, and spring 22 and battery monomer 3 one-to-one. The battery units 3 are connected in series or in parallel to form a battery pack 5 by abutting the nickel plate bodies 21 to the battery units 3. The first shell 11 and the second shell 12 press the spring 22, and the elastic force of the spring 22 pushes the nickel sheet body 21 to one side of the battery pack 5, so that the nickel sheet body 21 and the battery pack 5 can be tightly attached, and the connection stability of the battery pack 5 and the nickel sheet body 21 is ensured.

Referring to fig. 3, the nickel plate body 21 includes a plurality of abutting pieces 211 and a plurality of connecting rods 212, the abutting pieces 211 correspond to the battery cells 3 one by one, the springs 22 are correspondingly connected to the abutting pieces 211, the connecting rods 212 connect the abutting pieces 211 as a whole, and the abutting pieces 211 and the connecting rods 212 are integrally formed in this embodiment. Each spring 22 acts on one abutting piece 211, one side of each battery unit 3 can be guaranteed to abut against through the spring 22 and one abutting piece 211, and abutting stability is guaranteed. The abutting pieces 211 are connected into a whole through the connecting rod 212, so that a plurality of battery units 3 can be connected into a battery pack 5.

Referring to fig. 4, the first groove 111 and the second groove 121 have the same structure, and the first groove 111 is taken as an example in the present embodiment for description. The first grooves 111 are formed of a plurality of circular grooves 1111 that communicate with each other, and the circular grooves 1111 correspond to the battery cells 3 one by one. The single battery 3 is correspondingly clamped in the circular groove 1111, the abutting sheet 211 is limited between the groove bottom surface of the circular groove 1111 and the positive electrode/negative electrode of the single battery 3, and the side wall of the circular groove 1111 can be tightly attached to the peripheral surface of the single battery 3, so that the single battery 3 and the nickel sheet assembly 2 are limited, the movement of the single battery 3 is reduced, and the positive electrode and the negative electrode of the single battery 3 are prevented from being separated from or dislocated from the abutting sheet 211.

Be equipped with first cylinder 112 on the first casing 11, be equipped with second cylinder 122 on the second casing 12, seted up joint groove 1121 on the first cylinder 112, be equipped with the protruding 1221 of joint that corresponds with joint groove 1121 on the second cylinder 122, when installing first casing 11 and second casing 12 as a whole, can dock joint arch 1221 and joint groove 1121 with joint, easy to assemble.

In addition, one side on the first casing 11 is equipped with a plurality of arcs 113 at even interval, and arc 113 and battery monomer 3's global laminating mutually, and arc 113 can be spacing battery monomer 3 in battery chamber 4, makes the difficult condition that takes place the slope and lead to breaking away from with the butt joint board of battery monomer 3.

The implementation principle of the lithium battery module 7 in embodiment 1 of the present application is:

installing the lithium battery module 7: install two nickel piece subassemblies 2 respectively in the circular recess 1111 of first casing 11 and second casing 12, with a plurality of battery monomer 3 according to the circular recess 1111 of output specification requirement align to become the group battery installation of electricity into, with the first cylinder 112 and the second cylinder 122 joint of first casing 11 and second casing 12, compress tightly group battery 5 and nickel piece subassembly 2 from this, the relative both sides of group battery 5 all offsets with nickel piece subassembly 2, from this the equipment of a lithium cell module 7 is accomplished, this packaging mode is simple and convenient, reduce installation time.

Use lithium battery module 7: in the use process of the lithium battery module 7, the circular grooves 1111 of the first shell 11 and the second shell 12 extrude the springs 22 of the two nickel sheet assemblies 2 respectively, the elastic force of the springs 22 pushes the abutting sheets 211 to the two opposite sides of the battery pack 5, so that the abutting sheets 211 and the positive and/or negative electrodes of the single batteries 3 are tightly attached, the side walls of the circular grooves 1111 are tightly attached to the peripheral surfaces of the single batteries 3, and the single batteries 3 and the nickel sheet assemblies 2 are limited. The arc-shaped plate 113 connected to the first housing 11 is attached to the outer side of the single battery 3 to further increase the stability of the single battery 3 and reduce the movement of the single battery 3, thereby effectively preventing the positive and negative electrodes of the single battery 3 from being separated from or dislocated from the abutting piece 211.

Maintenance lithium battery module 7: after lithium battery module 7 used a period, can unpack first casing 11 and second casing 12 apart, take out battery monomer 3 and nickel piece subassembly 2 and overhaul or replace, this maintenance mode is simple and convenient.

Example two

The second embodiment of the present application further discloses a lithium battery, see fig. 5, including a housing 6 and a plurality of the above-mentioned lithium battery modules 7.

The housing 6 comprises a box body 61 and a cover body 62, a cavity is formed in the box body 61, the cover body 62 covers one side of the box body 61, the box body 61 and the cover body 62 can be connected in a bolted connection mode, a clamping connection mode and the like, and the box body 61 and the cover body 62 are connected through bolts in the embodiment. A plurality of lithium battery modules 7 are installed in the cavity, and two lithium battery modules 7 are exemplified in the present embodiment.

Two lithium battery module 7 accessible bolt joints, modes such as joint are installed in the cavity of box 61, and two lithium battery module 7 specifically adopt the mode of joint in this embodiment, and it can further improve the installation effectiveness of lithium cell. Install an insulating pad 8 between two lithium battery module 7, insulating pad 8 can completely cut off two adjacent lithium battery module 7, can play insulating protection to each lithium battery module 7, reduces the condition of taking place the contact short circuit between two adjacent lithium battery module 7.

Referring to fig. 6, the housing 6 further includes a limiting ring 9, notches 611 clamped with the limiting ring 9 are formed in the box body 61 and the cover body 62, the limiting ring 9 is pressed between the box body 61 and the cover body 62, the inner wall of the limiting ring 9 is tightly attached to the outer side of the lithium battery module 7, the lithium battery module 7 is limited in the cavity by the limiting ring 9, the lithium battery module 7 is not prone to move or tilt in the cavity, and the connection stability of the lithium battery module 7 is guaranteed in the use process of the lithium battery.

The implementation principle of the lithium battery in embodiment 2 of the present application is as follows:

installing a lithium battery: connect a plurality of foretell lithium battery module 7 according to the output specification requirement, two lithium battery module 7 adopt the mode of joint to connect, install an insulating pad 8 between two lithium battery module 7 during the joint, install the outside at a lithium battery module 7 with spacing ring 9, make the inner wall of spacing ring 9 hug closely with lithium battery module 7's the outside, a plurality of lithium battery module 7 form a whole from this, place this whole in the cavity, close box 61 and lid 62 lid and pass through bolted connection, make the mode convenient and fast of equipment lithium cell.

Using a lithium battery: spacing 9 is spacing with lithium battery module 7 in the cavity, and the difficult condition that takes place lithium battery module 7 and remove or slope in the cavity guarantees the stability that lithium battery module 7 connects in the use of lithium cell.

And (3) maintaining the lithium battery: after the lithium cell used a period, can unpack box 61 and lid 62 apart, take out lithium cell module 7, disassemble lithium cell module 7 and maintain, this maintenance mode is convenient.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a lithium battery module which characterized in that: including support (1), two nickel piece subassemblies (2) and a plurality of battery monomer (3), a battery chamber (4) has been seted up in support (1), battery monomer (3) homogeneous arrangement is a group battery (5) in battery chamber (4), two nickel piece subassembly (2) are passed through support (1) compresses tightly the relative both sides of group battery (5), each nickel piece subassembly (2) include a nickel piece body (21), nickel piece body (21) with the anodal and/or the negative pole butt of battery monomer (3).

2. The lithium battery module as claimed in claim 1, wherein: the nickel sheet component (2) further comprises a plurality of springs (22), the springs (22) correspond to the battery monomers (3) one to one, one ends of the springs (22) are connected to the nickel sheet body (21) far away from one side of the battery monomers (3), and the other ends of the springs (22) are abutted to the support (1).

3. The lithium battery module as claimed in claim 2, wherein: the nickel sheet body (21) comprises a plurality of abutting pieces (211) and a plurality of connecting rods (212), the abutting pieces (211) correspond to the battery units (3) one by one, the springs (22) are correspondingly connected to the abutting pieces (211), and the abutting pieces (211) are connected into a whole through the connecting rods (212).

4. The lithium battery module as claimed in claim 1, wherein: the support (1) comprises a first shell (11) and a second shell (12), and the first shell (11) and the second shell (12) are clamped.

5. The lithium battery module as claimed in claim 4, wherein: first recess (111) have been seted up on first casing (11), second recess (121) have been seted up on second casing (12), when first casing (11) with second casing (12) joint, first recess (111) with second recess (121) butt joint forms battery chamber (4).

6. The lithium battery module as claimed in claim 4, wherein: a plurality of arc-shaped plates (113) attached to the peripheral surface of the battery monomer (3) are arranged on the first shell (11) at intervals.

7. A lithium battery, characterized in that: comprising a housing (6) and a plurality of lithium battery modules (7) as claimed in any of claims 1 to 6, a cavity being provided in the housing (6), the lithium battery modules (7) being mounted in the cavity.

8. A lithium battery as claimed in claim 7, characterized in that: the shell (6) comprises a box body (61) and a cover body (62), the cavity is formed in the box body (61), and the cover body (62) covers one side of the box body (61).

9. A lithium battery as claimed in claim 8, characterized in that: the shell (6) further comprises a limiting ring (9), the limiting ring (9) is pressed between the box body (61) and the cover body (62), and the lithium battery module (7) is limited in the cavity by the limiting ring (9).

10. A lithium battery as claimed in claim 7, characterized in that: an insulating pad (8) is arranged between every two adjacent lithium battery modules (7).