CN218586270U - Battery structure capable of freely connecting in series and parallel - Google Patents

Abstract

The utility model discloses a battery structure capable of being freely connected in series and parallel, wherein one side of two confluence supports is provided with a confluence bar, and the two confluence bars are respectively connected with a battery anode tab and a battery cathode tab of an electric core group; the heat-conducting cell bottom shell is provided with a cell group mounting groove, the cell group is mounted in the cell group mounting groove of the heat-conducting cell bottom shell, the heat dissipation surface of the cell group is abutted with the heat-conducting cell bottom shell, and the heat-conducting cell bottom shell is abutted with the liquid cooling water plate; the top cover is arranged on the bottom shell of the heat-conducting electric core outside the electric core group mounting groove, the top cover is abutted against the electric core group, and the insulating top cover patch is arranged on one surface of the top cover, which is far away from the electric core group; the battery cell group comprises two connected battery cells. The utility model discloses reduced the expansion ratio of whole battery, be favorable to controlling the inflation of whole battery, reached better radiating effect, be favorable to big module or CTP design overall arrangement, be favorable to reducing the Bom cost of module or PACK end.

Description

Battery structure capable of freely connecting in series and parallel

Technical Field

The utility model belongs to the technical field of the new forms of energy battery module, concretely relates to can be freely connected in series-parallel's battery structure.

Background

In the field of new energy batteries, the appearance of the battery is generally divided into three types, namely a cylinder, a square and a soft package. Because of the structural particularity of the soft-package battery cell, the problems of explosion and the like cannot occur in the aspect of safety, and therefore, the application type of the soft-package battery cell is still wide. However, when the soft package battery cells are grouped, due to the structural characteristics of the soft package battery cells, modules or PACK grouping cannot be realized in a large module or CTP mode when the modules or PACK grouping is often carried out;

meanwhile, when a soft package module or PACK is designed, a single battery is usually used for certain series-parallel combination to meet the requirements of electric quantity and voltage, so that the cost requirement on the whole module or PACK is higher, and the whole cost control is not facilitated;

moreover, laminate polymer battery is in groups the back, for better carrying on heat-conduction and prevention battery inflation, needs to install the shell design additional in the group battery outside after in groups. At this moment, because the laminate polymer battery after in groups is more, it is higher to the heat dissipation requirement, requires the shell thinner, just can reach better radiating effect. In addition, the battery pack has larger expansion due to the increase of the number of the batteries after the battery pack is assembled, so that the shell is required to have higher strength and thicker. At this time, there is a contradiction between the prevention of swelling and the better heat conduction effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can be freely the parallelly connected battery structure of series-parallel for solve the above-mentioned problem that exists among the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a battery structure capable of being freely connected in series and in parallel comprises an electric core group, a heat-conducting electric core bottom shell, a top cover, an insulating top cover patch and collecting supports respectively arranged at two ends of the electric core group, wherein collecting bars are respectively arranged at one side of each of the two collecting supports, and the two collecting bars are respectively connected with a battery positive electrode lug and a battery negative electrode lug of the electric core group; the heat-conducting cell bottom shell is provided with a cell group installation groove, the cell group is installed in the cell group installation groove of the heat-conducting cell bottom shell, the heat dissipation surface of the cell group is abutted with the heat-conducting cell bottom shell, and the heat-conducting cell bottom shell is abutted with the liquid cooling water plate; the top cover is arranged on the bottom shell of the heat-conducting electric core outside the electric core group mounting groove, the top cover is abutted against the electric core group, and the insulating top cover patch is arranged on one surface of the top cover, which is far away from the electric core group; the battery cell group comprises two connected battery cells.

As a preferred technical solution in the present invention, both ends of the heat-conducting cell bottom case are provided with U-shaped limiting slide rails in an outwardly protruding manner, the two confluence brackets are respectively slidably connected to both ends of the heat-conducting cell bottom case, and the other sides of the two confluence brackets are provided with U-shaped chutes, which are slidably connected with the corresponding U-shaped limiting slide rails; the two confluence supports are respectively provided with a first through hole, and the battery anode tab and the battery cathode tab of the electric core group respectively penetrate through the first through holes and are connected with the confluence bar.

As a preferred technical scheme of the utility model, the opposite side of support that converges is provided with two first rectangular bosss, is provided with utmost point ear spacing groove between two first rectangular bosss, and utmost point ear spacing groove is linked together with first through-hole.

As a preferred technical scheme of the utility model, one side of the support that converges is provided with first mounting groove, and the busbar is installed in first mounting groove.

As a preferred technical scheme of the utility model, two electric cores of electric core group establish ties through respective battery utmost point ear, and two battery utmost point ears that are connected are battery positive pole utmost point ear and battery negative pole utmost point ear respectively, and two battery utmost point ears that are connected are provided with utmost point ear visor outward.

As a preferred technical scheme of the utility model, two electric cores of electric core group are parallelly connected through respective battery utmost point ear, and two battery utmost point ears that are connected are battery positive pole utmost point ear or battery negative pole utmost point ear, and are provided with utmost point ear visor outward for two battery utmost point ears that are connected.

As a preferred technical scheme of the utility model, utmost point ear visor includes first utmost point ear visor and second utmost point ear visor, and the both ends of first utmost point ear visor respectively are provided with a buckle, and the both ends of second utmost point ear visor respectively are provided with a draw-in groove, every buckle all with a draw-in groove cooperation joint.

As a preferred technical scheme in the utility model, the middle part of first utmost point ear visor is provided with spacing post, and the middle part of second utmost point ear visor is provided with spacing hole, and grafting that spacing post matches is in spacing downthehole.

As an in the utility model discloses in an optimal technical scheme, the one side of top cap orientation heat conduction electricity core drain pan is provided with the lock joint groove, and the top cap passes through lock joint groove lock on heat conduction electricity core drain pan.

As a preferred technical scheme in the utility model, the two ends and the middle part of the top cover are provided with second through holes, each second through hole is arranged corresponding to a battery tab of the electric core group, and an explosion-proof valve is assembled in each second through hole; and third through holes are formed in the two ends and the middle part of the insulating top cover patch, and each second through hole corresponds to one third through hole.

Has the advantages that: the utility model discloses all install the support that converges at electric core group both ends, install the busbar on the support that converges, two busbars are connected with the battery positive pole utmost point ear and the battery negative pole utmost point ear of electric core group respectively, in order to form the battery structure of making by electric core group fast, install electric core group in the electric core group mounting groove of heat conduction electric core drain pan, make heat conduction electric core drain pan can participate in the expansion process of electric core, the expansion rate of whole battery has been reduced, thereby be favorable to controlling the expansion of whole battery, and electric core group not only can transmit the heat to the liquid cooling water board through electric core drain pan, in order to dispel the heat, and heat conduction electric core drain pan has two large tracts of land sides, can accelerate the heat dissipation process too, thereby reach better radiating effect; the top cover, the bottom shell of the heat-conducting cell and the confluence bracket are matched together, so that the stability of the cell core group can be further enhanced, namely the stability of the structure of the soft-package battery is improved, and therefore, the design layout of a large module or CTP is facilitated, and then the insulating top cover paster is installed on one surface of the top cover, which is far away from the cell core group, so as to perform insulation protection; the electric core group includes two continuous electric cores, carries out corresponding parallelly connected or series combination between electric core, has reduced module or PACK end and has continued the structural design who carries out the series-parallel connection on the basis of this structure, is favorable to reducing the Bom cost of module or PACK end, and above-mentioned battery structural design is applicable in the laminate polymer battery of any size moreover, is favorable to reducing input such as technology, equipment, personnel, control cost that can be better.

Drawings

Fig. 1 is an exploded view of the present invention;

fig. 2 is a partial schematic view of the bottom case of the middle heat-conducting cell of the present invention;

fig. 3 is a schematic structural view of the bus bar support of the present invention before being engaged with the bus bar;

fig. 4 is a schematic structural view of the middle bus bar bracket according to the present invention at a first viewing angle;

fig. 5 is a schematic structural view of the middle bus bar bracket according to the present invention at a second viewing angle;

fig. 6 is a schematic structural view of the middle bus bar bracket according to the third viewing angle;

fig. 7 is a schematic structural view of a first tab protection cover of the present invention;

fig. 8 is a schematic structural view of the second ear protection cover of the present invention.

In the figure: 1-a cell group; 101-electric core; 2-heat conduction electric core bottom case; a 201-U-shaped limiting slide rail; 3-a top cover; 301-a second via; 4-insulating top cover patch; 401-a third via; 5-a manifold bracket; 501-U-shaped sliding chute; 502-a first via; 503-a first elongated boss; 504-tab limiting groove; 505-a first mounting groove; 6-a busbar; 7-a first tab protection cover; 701-buckling; 702-a spacing post; 8-a second ear protection cover; 801-card slot; 802-a limiting aperture;

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be briefly described below with reference to the accompanying drawings and the embodiments or the description of the prior art, it is obvious that the following description about the structure of the drawings is only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto.

The embodiment is as follows:

as shown in fig. 1-8, the present embodiment provides a battery structure capable of freely connecting in series and in parallel, which includes a core assembly 1, a heat-conducting cell bottom case 2 (made of metal, such as aluminum, and having greater hardness, and capable of absorbing the expansion rate of a part of the core assembly 1), a top cover 3, an insulating top cover patch 4, and bus holders 5 respectively installed at two ends of the core assembly 1, so as to ensure the relative stability of the position between the bus holders 5 and the core assembly 1, and of course, the installation herein does not represent a direct connection relationship, and represents a position relationship first, and the two bus holders 5 can be directly connected to two ends of the core assembly 1, or connected to other components (such as the heat-conducting cell bottom case 2) and then connected to the core assembly 1 by using bus bars 6, and without specific limitation, the bus bars 6 are installed at one side of the two bus holders 5, the two bus bars 6 are used for bus connection of the battery structure, and the two bus bars 6 are respectively connected to a positive electrode tab and a negative electrode tab of the battery of the core assembly 1, so as to quickly form the battery structure made of the core assembly 1.

The heat-conducting cell bottom shell 2 is provided with a cell group installation groove, the cell group 1 is installed in the cell group installation groove of the heat-conducting cell bottom shell 2, the stability of the cell group 1 can be improved through the heat-conducting cell bottom shell 2, namely, the stability of a soft-package battery structure is improved, so that large modules or CTP design layout is facilitated, the heat-conducting cell bottom shell 2 can participate in the expansion process of a cell, the expansion rate of the whole battery is reduced, so that the expansion of the whole battery is facilitated to be controlled, the heat dissipation surface of the cell group 1 is abutted with the heat-conducting cell bottom shell 2, the heat-conducting cell bottom shell 2 is abutted with a liquid cooling water plate, in the prior art, the heat dissipation surface of the cell group 1 is directly abutted with the liquid cooling water plate, for example, the heat dissipation surface is the heat dissipation surface at one end of the cell group 1, which is in contact with the heat-conducting cell bottom shell 2, the heat dissipation surface of the cell group 1 is smaller, and after the heat-conducting cell bottom shell 2 is installed, the cell group 1 can not only transmit heat to the liquid cooling water plate through the cell bottom shell 2 to dissipate heat, but also has two side surfaces with large area, so as to achieve a better heat dissipation process; the top cover 3 is arranged on the heat-conducting cell bottom shell 2 outside the cell group mounting groove, the top cover 3 is abutted to the cell group 1, the top cover 3, the heat-conducting cell bottom shell 2 and the confluence bracket 5 are matched together, the stability of the cell group 1 can be further enhanced, and the insulating top cover patch 4 is arranged on one surface of the top cover 3, which is far away from the cell group 1, so as to perform insulation protection; the electric core group 1 includes two electric cores 101 that link to each other, the connection here can be the series connection, also can be parallelly connected, do not do the restriction, and carry out corresponding parallelly connected or series combination between electric core 101, it carries on the structural design of series-parallel connection to have reduced module or PACK end on the basis of this structure, be favorable to reducing the Bom cost of module or PACK end, and above-mentioned battery structural design, applicable in the laminate polymer battery of any size, be favorable to reducing technology, equipment, personnel's input, control cost that can be better.

The utility model discloses all install collecting support 5 at electric core group 1 both ends, install busbar 6 on collecting support 5, two busbars 6 are connected with the battery positive pole utmost point ear and the battery negative pole utmost point ear of electric core group 1 respectively, in order to form the battery structure of making by electric core group 1 fast, install electric core group 1 in the electric core group mounting groove of heat conduction electric core drain pan 2, make heat conduction electric core drain pan 2 can participate in the expansion process of electric core, the expansion rate of whole battery has been reduced, thereby be favorable to controlling the expansion of whole battery, and electric core group 1 not only can transmit the heat to the liquid cooling water board through electric core drain pan 2, in order to dispel the heat, and heat conduction electric core drain pan 2 has two large tracts of land sides, can accelerate the heat dissipation process too, thereby reach better radiating effect; the top cover 3, the bottom shell 2 of the heat-conducting electric core and the confluence bracket 5 are matched together, so that the stability of the electric core group 1 can be further enhanced, namely the stability of a soft-package battery structure is improved, and therefore, the design layout of a large module or CTP is facilitated, and then the insulating top cover paster 4 is installed on one surface of the top cover 3, which is far away from the electric core group 1, so as to perform insulation protection; the electric core group 1 includes two electric cores 101 that link to each other, carries out corresponding parallelly connected or series combination between electric core 101, has reduced module or PACK end and has continued the structural design who carries out the series-parallel connection on the basis of this structure, is favorable to reducing the Bom cost of module or PACK end, and above-mentioned battery structural design is applicable in the laminate polymer battery of any size moreover, is favorable to reducing input such as technology, equipment, personnel, control cost that can be better.

As a preferred embodiment in this embodiment, it should be further explained that both ends of the heat-conducting cell bottom case 2 are convexly provided with U-shaped limiting slide rails 201, the two confluence brackets 5 are respectively slidably connected to both ends of the heat-conducting cell bottom case 2, and the other sides of the two confluence brackets 5 are respectively provided with U-shaped slide grooves 501, the U-shaped slide grooves 501 are slidably connected to the corresponding U-shaped limiting slide rails 201, the U-shaped limiting slide rails 201 and the U-shaped limiting slide rails are mutually matched, so as to also ensure the basic stability of the confluence brackets 5, and then the confluence brackets 5 can be further limited by the top cover 3, so as to ensure the stability of the confluence brackets 5, thereby ensuring the stable connection of the cell core set 1 and the confluence bars 6; all be provided with first through-hole 502 on two support 5 that converge, the anodal utmost point ear of battery of electric core group 1 and battery negative pole utmost point ear pass first through-hole 502 respectively and are connected with busbar 6, guarantee the stable connection of electric core group 1 and busbar 6 when guaranteeing that the structural connection is stable.

As a preferred embodiment in this embodiment, it should be further noted that two first elongated bosses 503 are disposed on the other side of the collecting bracket 5, a tab limiting groove 504 is disposed between the two first elongated bosses 503, the tab limiting groove 504 is communicated with the first through hole 502, and a battery positive tab and a battery negative tab of the electric core assembly 1 are just limited in the tab limiting groove 504, then pass through the first through hole 502 and are connected with the busbar 6, so as to reserve enough space for the battery positive tab and the battery negative tab of the electric core assembly 1, thereby ensuring the stability of the structure. In practice, the first elongated bosses 503 may also limit the positions of the two ends of the electric core assembly 1 for the electric core assembly 1, so as to further enhance the stability of the electric core assembly 1.

As a preferred embodiment in this embodiment, it should be further noted that one side of the bus bar bracket 5 is provided with a first installation groove 505, and the bus bar 6 is installed in the first installation groove 505, so as to form a clamping limiting effect on the bus bar 6, and enhance the stability of the bus bar 6 in a simple manner.

As a preferred embodiment in this embodiment, it needs to be further explained that two battery cells 101 of the battery PACK 1 are connected in series through a respective battery tab, and two battery tabs connected are a battery positive electrode tab and a battery negative electrode tab, respectively, so that the battery PACK 1 forms a basic battery cell 101 series structure, and thus on the basis of this structure, further series connection and/or parallel connection can be performed, a structural design that a module or a PACK end continues to perform series and parallel connection on the basis of this structure is reduced, which is beneficial to reducing Bom cost of the module or the PACK end, and a tab protection cover is arranged outside the two battery tabs connected, so as to form a basic protection effect on a connection position and enhance stability of the connection position.

As a preferred embodiment in this embodiment, it needs to be further described that two battery cells 101 of the battery cell group 1 are connected in parallel through a respective battery tab, and two connected battery tabs are both battery positive electrode tabs or battery negative electrode tabs, so that the battery cell group 1 forms a basic parallel structure of the battery cells 101, and thus on the basis of this structure, further serial connection and/or parallel connection can be performed, a structural design that a module or a PACK end continues to perform serial-parallel connection on the basis of this structure is reduced, which is beneficial to reducing Bom cost of the module or the PACK end, and a tab protection cover is provided outside two connected battery tabs to form a basic protection effect on a connection position, so as to enhance stability of the connection position.

As a preferred implementation scheme in this embodiment, it needs to be further noted that the tab protection covers include a first tab protection cover 7 and a second tab protection cover 8, two ends of the first tab protection cover 7 are respectively provided with a buckle 701, two ends of the second tab protection cover 8 are respectively provided with a clamping groove 801, each buckle 701 is in fit clamping connection with one clamping groove 801, the buckling connection manner is simple and convenient, and the two buckles 701 are located at the upper end and the lower end of the battery tab, and preferably, the two buckles 701 are symmetrically arranged on the first tab protection cover 7, and the two clamping grooves 801 are symmetrically arranged on the second tab protection cover 8, so that the fit between the first tab protection cover 7 and the second tab protection cover 8 is simpler and more convenient.

As a preferred embodiment in this embodiment, it should be further explained that the middle of the first tab protection cover 7 is provided with a limiting post 702, the middle of the second tab protection cover 8 is provided with a limiting hole 802, and the limiting post 702 is inserted into the limiting hole 802 in a matching manner.

As a preferred embodiment in this embodiment, it needs to be further described that a fastening groove is disposed on a surface of the top cover 3 facing the heat conduction cell bottom case 2, the top cover 3 is fastened on the heat conduction cell bottom case 2 through the fastening groove, and the top cover 3 can be installed more easily and conveniently through simple limiting. It should be noted that the design of the fastening groove is only one design, and in practice, a screw connection and the like may be added, without specific limitation.

As a preferred embodiment in this embodiment, it should be further explained that second through holes 301 are provided at both ends and the middle part of the top cover 3, each second through hole 301 is provided corresponding to a battery tab of the electric core assembly 1, and an explosion-proof valve 9 is assembled in each second through hole 301; both ends and the middle part of insulating top cap paster 4 all are provided with third through-hole 401, and every second through-hole 301 all corresponds with a third through-hole 401 to guarantee that this battery structure can make things convenient for more to be connected with external equipment, and then make up into more complete structure.

Finally, it should be noted that: the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A battery structure capable of being freely connected in series and in parallel is characterized by comprising an electric core group (1), a heat-conducting electric core bottom shell (2), a top cover (3), an insulating top cover patch (4) and bus supports (5) respectively arranged at two ends of the electric core group (1), wherein bus bars (6) are respectively arranged at one side of each of the two bus supports (5), and the two bus bars (6) are respectively connected with a battery anode lug and a battery cathode lug of the electric core group (1); an electric core group mounting groove is formed in the heat conduction electric core bottom shell (2), the electric core group (1) is mounted in the electric core group mounting groove of the heat conduction electric core bottom shell (2), the heat dissipation surface of the electric core group (1) is abutted with the heat conduction electric core bottom shell (2), and the heat conduction electric core bottom shell (2) is abutted with the liquid cooling water plate; the top cover (3) is arranged on the heat-conducting electric core bottom shell (2) outside the electric core group mounting groove, the top cover (3) is abutted against the electric core group (1), and the insulating top cover patch (4) is arranged on one surface of the top cover (3) deviating from the electric core group (1); the battery cell group (1) comprises two connected battery cells (101).

2. The battery structure capable of being freely connected in series and in parallel as claimed in claim 1, wherein both ends of the bottom casing (2) of the heat-conducting cell are convexly provided with U-shaped limit slide rails (201), the two bus supports (5) are respectively slidably connected to both ends of the bottom casing (2) of the heat-conducting cell, and the other sides of the two bus supports (5) are respectively provided with U-shaped sliding grooves (501), and the U-shaped sliding grooves (501) are slidably connected with the corresponding U-shaped limit slide rails (201); the two bus supports (5) are respectively provided with a first through hole (502), and the battery anode tab and the battery cathode tab of the electric core group (1) respectively pass through the first through holes (502) and are connected with the bus bar (6).

3. The battery structure capable of being freely connected in series and in parallel as claimed in claim 2, wherein the other side of the bus bar support (5) is provided with two first elongated bosses (503), a tab limiting groove (504) is arranged between the two first elongated bosses (503), and the tab limiting groove (504) is communicated with the first through hole (502).

4. The battery structure capable of being freely connected in series and in parallel according to any one of claims 1 to 3, wherein one side of the bus bar support (5) is provided with a first installation groove (505), and the bus bar (6) is installed in the first installation groove (505).

5. The battery structure capable of being freely connected in series and in parallel as claimed in claim 1, wherein two cells (101) of the cell group (1) are connected in series through a respective battery tab, the two connected battery tabs are a battery positive electrode tab and a battery negative electrode tab respectively, and a tab protection cover is arranged outside the two connected battery tabs.

6. The battery structure capable of being freely connected in series and in parallel as claimed in claim 1, wherein two cells (101) of the cell group (1) are connected in parallel through a respective battery tab, the two connected battery tabs are both battery positive electrode tabs or battery negative electrode tabs, and a tab protection cover is arranged outside the two connected battery tabs.

7. The battery structure capable of being freely connected in series and in parallel according to claim 5 or 6, wherein the tab protection covers comprise a first tab protection cover (7) and a second tab protection cover (8), two ends of the first tab protection cover (7) are respectively provided with a buckle (701), two ends of the second tab protection cover (8) are respectively provided with a clamping groove (801), and each buckle (701) is matched and clamped with one clamping groove (801).

8. The battery structure capable of being freely connected in series and in parallel as claimed in claim 7, wherein the first tab protection cover (7) is provided with a limiting post (702) in the middle, the second tab protection cover (8) is provided with a limiting hole (802) in the middle, and the limiting post (702) is inserted into the limiting hole (802) in a matching manner.

9. The battery structure capable of being freely connected in series and in parallel according to claim 1, wherein a fastening groove is formed on a surface of the top cover (3) facing the heat-conducting cell bottom case (2), and the top cover (3) is fastened on the heat-conducting cell bottom case (2) through the fastening groove.

10. The battery structure capable of being freely connected in series and in parallel according to claim 1, wherein the two ends and the middle part of the top cover (3) are provided with second through holes (301), each second through hole (301) is arranged corresponding to the battery tab of the electric core group (1), and an explosion-proof valve (9) is assembled in each second through hole (301); and the two ends and the middle part of the insulating top cover patch (4) are provided with third through holes (401), and each second through hole (301) corresponds to one third through hole (401).

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