CN212725425U

CN212725425U - Battery monomer and group battery

Info

Publication number: CN212725425U
Application number: CN202022181643.4U
Authority: CN
Inventors: 卢海军; 李澎栋
Original assignee: Zhongshan Xiaowan Energy Technology Co ltd
Current assignee: Zhongshan Xiaowan Energy Technology Co.,Ltd.
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-03-16
Anticipated expiration: 2030-09-28

Abstract

The utility model discloses a battery monomer and a battery pack, wherein the battery monomer comprises a cylinder body, a first end cover and a second end cover are respectively arranged at two ends of the cylinder body, an accommodating space is limited by the cylinder body, the first end cover and the second end cover, and a battery pack assembly is arranged in the accommodating space; the heat exchange tube is arranged on the first end cover and the second end cover in a penetrating mode and penetrates through the accommodating space, and the outer wall of the heat exchange tube is in contact with the electric core assembly. The heat exchange tube communicates outside low-temperature fluid and can take away the partial heat that the electric core subassembly produced with the electric core subassembly carries out the heat transfer, avoids the free inside temperature of battery to rise and makes the condition that battery charge and discharge efficiency and reliability descend, and the heat exchange tube communicates outside warm fluid and carries out the heat transfer with the electric core subassembly, can help the electric core subassembly rapid heating up under extremely cold condition, and then improves electric energy utilization efficiency. The battery pack comprises at least two battery monomers, the heat exchange tubes of the adjacent battery monomers are communicated, and all the battery monomers can exchange heat after external fluid is input from the heat exchange tube at one end of the battery pack.

Description

Battery monomer and group battery

Technical Field

The utility model relates to a battery monomer and group battery.

Background

At present, general battery can only utilize the parcel to carry out the heat transfer at the outside casing of electric core subassembly, and its heat transfer effect is relatively poor, when the inside high temperature of battery, can lead to battery charge-discharge efficiency and reliability to descend behind the accumulated heat in the battery, and under being in extremely cold environment, the inside temperature of battery is crossed lowly, and two kinds of circumstances all can influence the utilization efficiency and the reliability of electric energy.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a battery monomer that the heat transfer is good.

The utility model discloses still provide a group battery, every battery monomer homoenergetic of this group battery homoenergetic can reach good heat transfer effect, improves the energy utilization of group battery.

According to the utility model discloses a battery monomer of first aspect embodiment includes: the electric heating device comprises a cylinder body, wherein a first end cover and a second end cover are respectively arranged at two ends of the cylinder body, an accommodating space is defined by the cylinder body, the first end cover and the second end cover, and an electric core assembly is arranged in the accommodating space; the heat exchange tube penetrates through the first end cover and the second end cover, the heat exchange tube penetrates through the accommodating space, and the outer wall of the heat exchange tube is in contact with the electric core component.

According to the utility model discloses battery monomer has following beneficial effect at least:

above battery monomer is equipped with the heat exchange tube that runs through its inside, the pipe wall and the electric core subassembly of heat exchange tube contact, the heat exchange tube communicates outside low-temperature fluid and can take away the partial heat that the electric core subassembly produced with the electric core subassembly carries out the heat transfer, avoid the free inside temperature of battery to rise and make the condition that the battery charge and discharge efficiency and reliability descend, the heat exchange tube communicates outside warm fluid and carries out the heat transfer with the electric core subassembly, can help the electric core subassembly to heat up fast under extremely cold condition, and then improve the free electric energy utilization efficiency of battery.

The utility model discloses an in some embodiments, the heat exchange tube includes center tube, first joint and second joint, first end cover with set up respectively on the second end cover with the first mounting hole and the second mounting hole of center tube looks adaptation, first joint can dismantle the connection be in the one end of center tube and compress tightly in on the first end cover, the second joint can dismantle the connection be in the other end of center tube and compress tightly in on the second end cover, first joint with the inside of second joint be equipped with respectively with first through hole and the second through hole that the inside of center tube is linked together.

In some embodiments of the present invention, the two ends of the central tube are respectively threadedly connected with the first joint and the second joint.

In some embodiments of the present invention, the battery cell further includes a first sealing member and a second sealing member, the first sealing member is disposed between the first joint and the first end cap in a sealing manner, and the second sealing member is disposed between the second joint and the second end cap in a sealing manner.

In some embodiments of the present invention, the first end cap is provided with a connection kit for connecting the second end cap of another battery cell.

The utility model discloses an in some embodiments, be equipped with first internal thread on the first end cap, be equipped with the second internal thread on the second end cap, be equipped with on the connection external member with the first external screw thread that first internal thread is connected, be equipped with on the connection external member with second internal thread assorted second external screw thread.

The utility model also provides a battery pack, including two at least above-mentioned arbitrary technical scheme's battery monomer, establish ties in proper order through connecting the external member between the battery monomer, it is adjacent on the battery monomer communicate each other between the heat exchange tube.

According to the utility model discloses group battery has following beneficial effect at least:

the battery pack comprises at least two battery monomers, the battery monomers are sequentially connected in series through a connecting sleeve member and are adjacent to each other on the battery monomers, the heat exchange tubes are communicated with each other, and after external fluid is input from the heat exchange tube at one end of the battery pack, the fluid can be output from the heat exchange tube at the other end of the battery pack, so that all the battery monomers of the battery pack are subjected to heat exchange.

In some embodiments of the utility model, adjacent battery monomer with correspond enclose into closed cavity between the connection external member, the heat exchange tube all with closed cavity is linked together.

In some embodiments of the utility model, the lateral wall of the connection external member is provided with the through-hole that will closed cavity is linked together with the outside, through-hole demountable installation have with the sealing plug that the through-hole is sealed.

The utility model discloses an in some embodiments, it is adjacent be connected through the third connector between the heat exchange tube, the inside of third connector is equipped with and is adjacent the inside hole passageway that is linked together of heat exchange tube.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic diagram of an internal structure of an embodiment of a battery cell according to the present invention;

fig. 2 is a schematic diagram of an internal structure of an embodiment of a battery pack according to the present invention;

fig. 3 is a schematic diagram of an internal structure of another embodiment of the battery pack of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the orientation description, such as the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., is the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplicity of description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, a battery cell according to an embodiment of the first aspect of the present invention includes: the battery pack comprises a cylinder body 100, wherein a first end cover 200 and a second end cover 300 are respectively arranged at two ends of the cylinder body 100, the first end cover 200 and the second end cover 300 define an accommodating space, and a battery pack assembly 400 is arranged in the accommodating space; the heat exchange tube 500 is arranged on the first end cover 200 and the second end cover 300 in a penetrating mode, the heat exchange tube 500 penetrates through the accommodating space, and the outer wall of the heat exchange tube 500 is in contact with the electric core assembly 400. Above battery monomer is equipped with and runs through its inside heat exchange tube 500, the pipe wall of heat exchange tube 500 contacts with electric core subassembly 400, heat exchange tube 500 intercommunication outside low-temperature fluid and carry out the heat transfer with electric core subassembly 400 and can take away the partial heat that electric core subassembly 400 produced, avoid the condition that battery monomer's inside temperature risees and make battery charge-discharge efficiency and reliability descend, heat exchange tube 500 intercommunication outside warm fluid and carry out the heat transfer with electric core subassembly 400, can help electric core subassembly 400 rapid heating up under extremely cold condition, and then improve the electric energy utilization efficiency.

Referring to fig. 1, in some embodiments of the present invention, the heat exchange tube 500 includes a central tube 510, a first joint 520 and a second joint 530, the first joint 520 and the second joint 530 are respectively provided with a first through hole 521 and a second through hole 531 communicated with the inside of the central tube 510, the first through hole 521 and the second through hole 531 are respectively opposite to two ports of the central tube 510, the first end cap 200 and the second end cap 300 are respectively provided with a first mounting hole and a second mounting hole matched with the central tube 510, the first mounting hole and the second mounting hole are respectively used for two ends of the central tube 510 to pass through, the first joint 520 is detachably connected to one end of the central tube 510 and is pressed against the first end cap 200, the second joint 530 is detachably connected to the other end of the central tube 510 and is pressed against the second end cap 300, the first and

second connectors

520 and 530 may fix the central tube 510 inside the battery cell, and may reinforce the connection between the first end cap 200 and the cylindrical body 100 and the connection between the second end cap 300 and the cylindrical body 100.

Referring to fig. 1, in some embodiments of the present invention, to simplify the installation, both ends of the central tube 510 are respectively screwed with the first joint 520 and the second joint 530.

Referring to fig. 1, in some embodiments of the present invention, for a single battery having an electrolyte inside a can 100, in order to avoid leakage of the electrolyte, the single battery further includes a first sealing member 540 and a second sealing member 550, the first sealing member 540 is sealingly disposed between the first joint 520 and the first end cap 200, and the second sealing member 550 is sealingly disposed between the second joint 530 and the second end cap 300.

Referring to fig. 1 and 2, in some embodiments of the present invention, a connection kit 600 for connecting another single battery to the second end cap 300 is disposed on the first end cap 200, so as to connect a plurality of single batteries.

In some embodiments of the present invention, a first internal thread 220 is disposed on the first end cap 200, a second internal thread 320 is disposed on the second end cap 300, a first external thread 610 connected to the first internal thread 220 is disposed on the connection kit 600, and a second external thread 620 matched with the second internal thread 320 is disposed on the connection kit 600. That is, two adjacent battery cells are connected through a thread structure, the number of the battery cells connected in series can be freely adjusted, and when only one battery cell is used, the connection kit 600 can be detached from the battery cell without affecting the use.

In some embodiments of the present invention, the electric core assembly 400 includes a winding core assembly and an electrolyte located in the accommodating space, the first end cap 200 and/or the second end cap 300 is provided with a liquid injection port, and the liquid injection port is detachably mounted with a safety valve 700.

Referring to fig. 2 or fig. 3, the utility model discloses still provide a battery pack, including two at least above-mentioned any technical scheme's battery monomer, establish ties in proper order through connecting external member 600 between the battery monomer, the heat exchange tube 500 on the adjacent battery monomer is linked together. After external fluid is input into the battery pack through the heat exchange pipe 500 at one end, the fluid can be output through the heat exchange pipe 500 at the other end of the battery pack, so that all the battery cells of the battery pack can be subjected to heat exchange.

Referring to fig. 1 and 2, in some embodiments of the present invention, a closed chamber 800 is defined between the adjacent battery cells and the corresponding connection kit 600, and the heat exchange tubes 500 on the adjacent battery cells are all communicated with the closed chamber 800.

Referring to fig. 3, in some embodiments of the present invention, adjacent heat exchange tubes 500 are connected to each other through a third connector 900, and an inner hole channel communicated with the adjacent heat exchange tubes 500 is formed inside the third connector 900. All the heat exchange tubes 500 are connected to form a closed circuit without communication using the closed chamber 800 in the above embodiment.

Referring to fig. 1 and 2, in some embodiments of the present invention, the sidewall of the connection kit 600 is provided with a through hole 630 for communicating the closed chamber 800 with the outside, and the through hole 630 is detachably mounted with a sealing plug for sealing the through hole 630. When the inside of the heat exchange pipe 500 is not accessed with an external fluid, the sealing plug is removed from the through hole 630, and the heat conducted to the first and

second end caps

200 and 300 can be discharged from the through hole 630 in the form of a hot air flow, or an external air flow can enter the closed chamber 800 from the through hole 630 to exchange heat with the first and

second end caps

200 and 300.

The utility model discloses an in some embodiments, seted up a plurality ofly on the lateral wall of connecting external member 600 and wound the axle center circumference of heat exchange tube 500 distributes through-hole 630 is favorable to improving heat exchange efficiency.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery cell, comprising:

the battery pack comprises a cylinder body (100), wherein a first end cover (200) and a second end cover (300) are respectively arranged at two ends of the cylinder body (100), the first end cover (200) and the second end cover (300) define an accommodating space, and a battery pack assembly (400) is arranged in the accommodating space;

the heat exchange tube (500) penetrates through the first end cover (200) and the second end cover (300), the heat exchange tube (500) penetrates through the accommodating space, and the outer wall of the heat exchange tube (500) is in contact with the electric core assembly (400).

2. The battery cell of claim 1, wherein:

the heat exchange tube (500) comprises a central tube (510), a first joint (520) and a second joint (530), a first mounting hole and a second mounting hole which are matched with the central tube (510) are respectively formed in the first end cover (200) and the second end cover (300), the first joint (520) is detachably connected to one end of the central tube (510) and tightly pressed on the first end cover (200), the second joint (530) is detachably connected to the other end of the central tube (510) and tightly pressed on the second end cover (300), and a first through hole (521) and a second through hole (531) which are communicated with the inside of the central tube (510) are respectively formed in the first joint (520) and the second joint (530).

3. A battery cell according to claim 2, wherein:

the two ends of the central pipe (510) are respectively connected with the first joint (520) and the second joint (530) in a threaded mode.

4. A battery cell according to claim 2, wherein:

further comprising a first seal (540) and a second seal (550), the first seal (540) being sealingly disposed between the first joint (520) and the first end cap (200), the second seal (550) being sealingly disposed between the second joint (530) and the second end cap (300).

5. The battery cell of claim 1, wherein:

and a connecting kit (600) for connecting the second end cover (300) of the other battery cell is arranged on the first end cover (200).

6. The battery cell of claim 5, wherein:

be equipped with first internal thread (220) on first end cover (200), be equipped with second internal thread (320) on second end cover (300), be equipped with on connection external member (600) with first external screw thread (610) that first internal thread (220) are connected, be equipped with on connection external member (600) with second internal thread (320) assorted second external screw thread (620).

7. A battery pack, characterized in that, comprises at least two battery units as set forth in any of claims 1-6, the battery units are connected in series in sequence through a connecting sleeve (600), and the heat exchange pipes (500) on the adjacent battery units are communicated with each other.

8. A battery pack in accordance with claim 7, wherein:

and a closed cavity (800) is defined between the adjacent battery cells and the corresponding connecting sleeve member (600), and the heat exchange tubes (500) are communicated with the closed cavity (800).

9. A battery pack in accordance with claim 8, wherein:

the side wall of the connecting kit (600) is provided with a through hole (630) communicating the closed cavity (800) with the outside, and the through hole (630) is detachably provided with a sealing plug sealing the through hole (630).

10. A battery pack in accordance with claim 7, wherein:

adjacent be connected through third connector (900) between heat exchange tube (500), the inside of third connector (900) is equipped with and is adjacent the inside hole passageway that is linked together of heat exchange tube (500).