CN213459908U

CN213459908U - Power battery and battery cell module splicing device thereof

Info

Publication number: CN213459908U
Application number: CN202022033680.0U
Authority: CN
Inventors: 崔伯虎
Original assignee: Kayo Battery Co ltd
Current assignee: Kayo Battery Co ltd
Priority date: 2020-09-16
Filing date: 2020-09-16
Publication date: 2021-06-15
Anticipated expiration: 2030-09-16

Abstract

The application belongs to the technical field of batteries, and particularly relates to a power battery and a battery cell module splicing device thereof, wherein the battery cell module splicing device comprises a conducting strip and two supports, one support is respectively used for being sleeved on an anode of one battery cell module, the other support is used for being sleeved on a cathode of the other battery cell module, and the two supports are divided into a first support and a second support; the first support is provided with a first guide post, the second support is provided with a first guide hole, and the first guide post is inserted into the first guide hole; the conducting strip is installed between first support and second support to the electric property switches on two electric core modules. After first guide post inserts first guiding hole completely, relatively fixed between first support and the second support, size between first support and the second support is invariable, so when a plurality of electric core module concatenations the back, the size of whole power battery package can not change yet, has guaranteed the uniformity of power battery size.

Description

Power battery and battery cell module splicing device thereof

Technical Field

This application belongs to battery technical field, especially relates to a power battery and electricity core module splicing apparatus thereof.

Background

With the development of science and technology, power batteries are also widely developed and applied, and after a plurality of battery cell modules are butted together through a bracket, the battery cell modules are connected in series and arranged, and finally, the battery cell modules are connected in series or in parallel; but in the actual manufacture process of support butt joint, the relative position manual operation location of two supports of concatenation also makes between some two supports apart from far away, and is close between some two supports for accomplish very accurately spacing between the support, cause support and support butt joint to have great error, thereby influence whole power battery's size uniformity.

SUMMERY OF THE UTILITY MODEL

The utility model provides a power battery and electricity core module splicing apparatus thereof aims at solving the technical problem that there is great error in the butt joint of support and support in the power battery among the prior art to lead power battery size uniformity poor.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: a battery cell module splicing device is arranged between two battery cell modules which are arranged in series; the battery cell module splicing device comprises a conducting strip and two supports, wherein one support is respectively used for being sleeved on the anode of one battery cell module, the other support is used for being sleeved on the cathode of the other battery cell module, and the two supports are divided into a first support and a second support; the first support is provided with a first guide post, the second support is provided with a first guide hole, and the first guide post is inserted into the first guide hole; the conducting strip is installed between the first support and the second support and used for electrically conducting the two battery cell modules.

Optionally, the cross section of the first guide post is polygonal.

Optionally, a second guide post is further disposed on the second support, a second guide hole is disposed on the first support, and the second guide post is inserted into the second guide hole.

Optionally, be equipped with on the periphery wall of first support towards the second support extends and extends first spacing rectangular outside the first support terminal surface, be provided with first spacing arch on the periphery wall of second support, work as first support with the second support is pegged graft and is targetting in place the back, first spacing rectangular tip support tightly in on the first spacing arch.

Optionally, be equipped with on the periphery wall of second support towards first support extends and extends the spacing rectangular of second outside the second support terminal surface, be provided with the spacing arch of second on the periphery wall of first support, work as first support with the second support is pegged graft and is targetting in place the back, the spacing rectangular tip of second support tightly in on the spacing arch of second.

Optionally, the structural shape and size of the first stent is identical to the structural shape and size of the second stent.

Optionally, the conductive sheet is provided with a connecting portion extending out of the bracket and electrically connected to an external component, and the connecting portion extends out of the bracket and then bends toward one of the brackets.

Optionally, a containing groove for containing the connecting portion is formed in the peripheral wall of the support.

Optionally, the end face of the bracket is provided with a mounting groove for placing the conductive sheet, and a penetrating groove for the connection part to penetrate out is formed in the side wall of the mounting groove.

One or more technical solutions in the electric core module splicing apparatus provided by the present application have at least one of the following technical effects: when in use, one of the brackets is sleeved on the anode of one battery cell module, the other bracket is sleeved on the cathode of the other battery cell module, the conducting strip is placed in one of the brackets, then, the two brackets are butted, only the first guide post of the first bracket needs to be inserted into the second guide hole manually, and ensures that the first guide post is completely inserted into the first guide hole, thereby ensuring that the two cell modules clamp the conducting strip on one hand, thereby completing the electrical conduction and splicing of the two battery cell modules, on the other hand, after the first guide post is completely inserted into the first guide hole, the first support and the second support are relatively fixed, and the size between the first support and the second support is constant, so that after the plurality of battery cell modules are spliced, the size of the whole power battery pack cannot be changed, and the size consistency of the power batteries is ensured.

Another technical scheme adopted by the application is as follows: the utility model provides a power battery, includes at least two electric core module and at least one above-mentioned electric core module splicing apparatus, each electric core module is established ties in proper order and is arranged, each electric core module splicing apparatus installs in adjacent two with one-to-one between the electric core module.

The utility model provides a power battery, owing to adopted foretell electric core module splicing apparatus, when two supports butt joints, only need the first guide post of artifical first support to insert the second guiding hole, and guarantee that first guide post inserts in the first guide hole completely, guarantee on the one hand like this that two electric core modules press from both sides the conducting strip tightly, thereby the electric property of having accomplished two electric core modules switches on and splices, on the other hand, after first guide post inserts first guide hole completely, relatively fixed between first support and the second support, size between first support and the second support is invariable, so after a plurality of electric core modules splice, the size of whole power battery package can not change yet, the uniformity of power battery size has been guaranteed.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a power battery provided in an embodiment of the present application.

Fig. 2 is a partial structural diagram of a portion a in fig. 1.

Fig. 3 is a sectional view taken along B-B in fig. 2.

Fig. 4 is an exploded view of the components shown in fig. 2.

Fig. 5 is a schematic structural view of the second bracket (or the first bracket) shown in fig. 4.

Wherein, in the figures, the respective reference numerals:

100-electric core module splicing device 110-conducting strip 111-connecting part

120-first bracket 121-first guide column 122-second guide hole

123-first spacing strip 124-second spacing projection 130-second support

131-first guide hole 132-second guide post 133-first limit projection

134-second limiting strip 141-accommodating groove 142-mounting groove

143-through groove 144-mounting hole 200-battery cell module

210-cylindrical battery.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar 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 fig. 1-5 are exemplary and intended to be used to illustrate the present application and should not be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, is not to be considered as limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

As shown in fig. 1 to 5, in an embodiment of the present application, a cell module splicing device 100 is provided, which is suitable for use in a power battery, and is mainly used for connecting two adjacent cell modules 200 arranged in series, where the cell module 200 may be formed by arranging a plurality of cylindrical batteries 210 side by side, and a 0.9mm short-circuit prevention safety distance is reserved between two adjacent cylindrical batteries 210, so as to ensure the safety of the power battery; the number of the cylindrical batteries 210 may be three, four or more, and the specific number thereof may be set according to actual needs, and is not limited herein.

As shown in fig. 1, fig. 2, and fig. 3, the battery cell module splicing apparatus 100 includes a conductive sheet 110 and two supports, wherein one of the supports is respectively used for being sleeved on an anode of one of the battery cell modules 200, the other support is used for being sleeved on a cathode of the other battery cell module 200, and the conductive sheet 110 is installed between the two supports and is used for electrically connecting the two battery cell modules 200; the two brackets are divided into a first bracket 120 and a second bracket 130, the first bracket 120 is provided with a first guide column 121, the second bracket 130 is provided with a first guide hole 131, and the first guide column 121 is inserted into the first guide hole 131.

Specifically, in the cell module splicing device 100 according to the embodiment of the present application, when in use, one of the brackets is sleeved on the positive electrode of one of the cell modules 200, the other bracket is sleeved on the negative electrode of the other cell module 200, the conductive sheet 110 is placed in one of the brackets, then the two brackets are butted, only the first guide post 121 of the first bracket 120 needs to be manually inserted into the second guide hole 122, and the first guide post 121 is ensured to be completely inserted into the first guide hole 131, so that on one hand, the two cell modules 200 are ensured to clamp the conductive sheet 110, thereby completing electrical conduction and splicing of the two cell modules 200, on the other hand, after the first guide post 121 is completely inserted into the first guide hole 131, the first bracket 120 and the second bracket 130 are relatively fixed, the size between the first bracket 120 and the second bracket 130 is constant, and then after a plurality of cell modules 200 are spliced, the size of the whole power battery pack cannot be changed, and the size consistency of the power batteries is ensured.

In this embodiment, referring to fig. 1 and fig. 2, when the first bracket 120 is sleeved on the positive electrode of one battery cell module 200, the second bracket 130 is sleeved on the negative electrode of another battery cell module 200; or, when the second bracket 130 is sleeved on the positive electrode of one cell module 200, the first bracket 120 is sleeved on the negative electrode of another cell module 200; more specifically, the first bracket 120 and the second bracket 130 are provided with accommodating holes for accommodating the battery cell module 200, the accommodating holes are formed by a plurality of circular holes which are communicated in parallel in sequence, and the number of the specific circular holes is the same as that of the cylindrical batteries 210 in the battery cell module 200.

In another embodiment of the present application, as shown in fig. 4 and 5, the cross section of the first guide column 121 of the cell module splicing device 100 is provided with a polygon. Specifically, the cross section of the first guide post 121 is polygonal, so that after the first guide post 121 is inserted into the first guide hole 131, the first support 120 and the second support 130 cannot be sleeved on the axis of the first guide post 121 to rotate, so that the relative rotation limit between the first support 120 and the second support 130 is realized, the up-down, left-right, front-back and front-back positioning between the first support 120 and the second support 130 is realized, the size consistency of the whole power battery is better, and the appearance is more attractive.

In another embodiment of the present application, as shown in fig. 4 and 5, a second guide post 132 is further disposed on the second support 130 of the cell module splicing device 100, a second guide hole 122 is disposed on the first support 120, and the second guide post 132 is inserted into the second guide hole 122. When the first support 120 is butted with the second support 130, the first guide column 121 is inserted into the first guide hole 131, and the second guide column 132 is also inserted into the second guide hole 122, so that the first support 120 and the second support 130 can rotate in a limited manner through the insertion fit of the first guide column 121 and the first guide hole 131 and the insertion fit of the second guide column 132 and the second guide hole 122, and the upper, lower, left, right, front and back positioning between the first support 120 and the second support 130 is realized, the size consistency of the whole power battery is better, and the appearance is more attractive. In addition, the first guide column 121 and the second guide column 132 are respectively arranged on the first bracket 120 and the second bracket 130, and when the first bracket 120 and the second bracket 130 are specifically applied, the first bracket 120 and the second bracket 130 can be made into structures with the same structure, so that the universality of the brackets is improved, and the manufacturing cost is reduced.

In another embodiment of the present application, as shown in fig. 2, a first limiting strip 123 extending toward the second support 130 and extending out of an end surface of the first support 120 is disposed on an outer peripheral wall of the first support 120 of the cell module splicing device 100, a first limiting protrusion 133 is disposed on an outer peripheral wall of the second support 130, and when the first support 120 and the second support 130 are inserted in place, an end portion of the first limiting strip 123 abuts against the first limiting protrusion 133. When the power battery is used, after the first support 120 and the second support 130 are butted in place, the end part of the first limiting strip 123 abuts against the first limiting protrusion 133, so that the size between the first support 120 and the second support 130 can be limited, and further, the size of the whole power battery is ensured to have good consistency; when the power battery is used specifically, after the first bracket 120 and the second bracket 130 are inserted in place, the first bracket 120 and the second bracket 130 are relatively abutted, no gap exists, further, the end part of the first limiting strip 123 abuts against the first limiting protrusion 133, the first bracket 120 and the second bracket 130 are in a relatively abutted state after being abutted, and the size consistency of the power battery is ensured; in addition, the first support 120 and the second support 130 are tightly abutted to prevent external components from contacting the positive and negative electrodes of the battery cell module 200, so as to avoid short circuit.

In another embodiment of the present application, as shown in fig. 2, a second limiting strip 134 extending toward the first support 120 and extending out of an end surface of the second support 130 is disposed on an outer peripheral wall of the second support 130 of the cell module splicing device 100, a second limiting protrusion 124 is disposed on the outer peripheral wall of the first support 120, and when the first support 120 and the second support 130 are inserted in place, an end portion of the second limiting strip 134 abuts against the second limiting protrusion 124. When the power battery is used, after the first bracket 120 and the second bracket 130 are butted in place, the end part of the second limiting strip 134 abuts against the second limiting protrusion 124, further, the function of limiting the size between the first bracket 120 and the second bracket 130 is achieved, and the size of the whole power battery is ensured to have good consistency; in addition, the first limiting strip 123 and the second limiting strip 134 are respectively arranged on the first support 120 and the second support 130, and when the bracket is specifically applied, the first support 120 and the second support 130 can be made into structures with the same structure, so that the universality of the bracket is improved, and the manufacturing cost is reduced.

Further, the second limiting strip 134 and the first limiting strip 123 are both located on the same side of the first support 120, so that after the first support 120 and the second support 130 are butted, the first limiting strip 123 and the second limiting strip 134 are located on the same side, so that the front side and the back side of the first support 120 and the second support 130 can be distinguished, and the plugging is facilitated.

In another embodiment of the present application, as shown in fig. 5, the structural shape and size of the first bracket 120 of the cell module splicing device 100 is completely the same as the structural shape and size of the second bracket 130. Therefore, the first bracket 120 and the second bracket 130 can be used interchangeably, the universal type of the bracket is improved, and the manufacturing cost is reduced.

In another embodiment of the present application, as shown in fig. 2, 3 and 4, a connecting portion 111 extending out of the bracket and electrically connected to an external component is disposed on the conductive sheet 110 of the cell module splicing device 100, and the connecting portion 111 extends out of the bracket and then bends toward one of the brackets. Outside two supports were drawn forth to connecting portion 111, conveniently with external component electricity core connection, and connecting portion 111 is buckled along the periphery wall of one of them support, can reduce whole power battery's overall dimension like this, makes its structure more compact.

Further, pure nickel material is selected for use to conducting strip 110, and when conducting strip 110 welded on the positive pole and the negative pole of electric core module 200, conducting strip 110 was good with electric core module 200's the firm degree of welding, avoids the power battery to open a way, uses firm good reliability, and in addition, conducting strip 110's electric conductive property is good, also can improve power battery's performance.

In another embodiment of the present application, as shown in fig. 2 and fig. 3, a receiving groove 141 for receiving the connecting portion 111 is provided on an outer peripheral wall of the bracket of the cell module splicing device 100. Specifically, the accommodating groove 141 provides a space for the connecting portion 111, so that a short circuit caused by an impact of an external metal object on the connecting portion 111 can be prevented, and the appearance of the cell module splicing device 100 can be more attractive. More specifically, the accommodating groove 141 is disposed on the first bracket 120 or the second bracket 130, or the accommodating groove 141 is disposed on both the first bracket 120 and the second bracket 130.

Preferably, the length of the connecting portion 111 extending out of the bracket is 2mm, and the arrangement of the length can also avoid the problem of short circuit caused by the fact that the connecting portion 111 is exposed excessively long on the basis of ensuring the reliable and firm wiring.

In another embodiment of the present application, as shown in fig. 3, 4 and 5, a mounting groove 142 for placing the conductive sheet 110 is provided on an end surface of the support of the cell module splicing device 100, and a through-groove 143 for the connection portion 111 to penetrate out is provided on a side wall of the mounting groove 142. Specifically, after the first bracket 120 and the second bracket 130 are abutted, the conductive plate 110 is located in the mounting groove 142 and cannot be exposed outside the bracket, so as to prevent short circuit caused by collision of external parts with the conductive plate 110; in addition, the connection portion 111 protrudes out of the through groove 143, so that the connection portion 111 can be prevented from being damaged due to the pressing force between the first bracket 120 and the second bracket 130 to press the connection portion 111. Further, the mounting groove 142 and the through groove 143 are provided on the first bracket 120 or the second bracket 130, or both the first bracket 120 and the second bracket 130 are provided with the mounting groove 142 and the through groove 143; further, the mounting groove 142 is communicated with the mounting hole 144, so that the conductive sheet 110 is ensured to be in contact with the positive electrode and the negative electrode of the battery cell module 200 for conduction.

In another embodiment of the present application, as shown in fig. 1, a power battery is provided, which includes at least two battery cell modules 200 and at least one battery cell module splicing device 100, wherein the battery cell modules 200 are sequentially connected in series, and each battery cell module splicing device 100 is installed between two adjacent battery cell modules 200 in a one-to-one correspondence manner.

Specifically, the power battery of this application embodiment, owing to adopted foretell electricity core module splicing apparatus 100, when two supports butt joint, only need artifical first guide post 121 of first support 120 to insert second guiding hole 122, and guarantee that first guide post 121 inserts in first guiding hole 131 completely, guarantee two electricity core modules 200 on the one hand like this and press from both sides conducting strip 110 tightly, thereby the electric property of having accomplished two electricity core modules 200 switches on and splices, on the other hand, after first guide post 121 inserts first guiding hole 131 completely, relatively fixed between first support 120 and the second support 130, size between first support 120 and the second support 130 is invariable, so when a plurality of electricity core modules 200 splices the back, the size of whole power battery package can not change yet, the uniformity of power battery size has been guaranteed.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims

1. A battery cell module splicing device is arranged between two battery cell modules which are arranged in series; the method is characterized in that: the battery cell module comprises a conducting strip and two supports, wherein one support is respectively used for being sleeved on the anode of one battery cell module, the other support is used for being sleeved on the cathode of the other battery cell module, and the two supports are divided into a first support and a second support;

the first support is provided with a first guide post, the second support is provided with a first guide hole, and the first guide post is inserted into the first guide hole; the conducting strip is installed between the first support and the second support and used for electrically conducting the two battery cell modules.

2. The battery cell module splicing device of claim 1, wherein: the cross section of the first guide post is polygonal.

3. The battery cell module splicing device of claim 1, wherein: the second support is further provided with a second guide post, the first support is provided with a second guide hole, and the second guide post is inserted into the second guide hole.

4. The battery cell module splicing device of claim 1, wherein: be equipped with the orientation on the periphery wall of first support the second support extends and extends first spacing rectangular outside the first support terminal surface, be provided with first spacing arch on the periphery wall of second support, work as first support with the second support is pegged graft and is targetting in place the back, first spacing rectangular tip support tightly in on the first spacing arch.

5. The battery cell module splicing device of claim 4, wherein: be equipped with the orientation on the periphery wall of second support first support extends and extends the spacing rectangular of second outside the second support terminal surface, be provided with the spacing arch of second on the periphery wall of first support, work as first support with the second support is pegged graft and is targetting in place the back, the spacing rectangular tip of second support tightly in on the spacing arch of second.

6. The battery cell module splicing device of any one of claims 1 to 5, wherein: the structural shape and size of the first bracket is identical to that of the second bracket.

7. The battery cell module splicing device of any one of claims 1 to 5, wherein: the conducting strip is provided with a connecting part which extends out of the bracket and is electrically connected with an external part, and the connecting part extends out of the bracket and then bends towards one of the brackets.

8. The battery cell module splicing device of claim 7, wherein: the outer peripheral wall of the support is provided with a containing groove for containing the connecting part.

9. The battery cell module splicing device of claim 7, wherein: the terminal surface of the support is provided with a mounting groove for placing the conducting strip, and a penetrating groove for the connecting part to penetrate out is formed in the side wall of the mounting groove.

10. A power battery is characterized by comprising at least two battery cell modules and at least one battery cell module splicing device according to any one of claims 1 to 9, wherein the battery cell modules are sequentially arranged in series, and the battery cell module splicing devices are installed between every two adjacent battery cell modules in a one-to-one correspondence manner.