CN217427009U - Battery positive and negative pole connection structure - Google Patents

Abstract

The application relates to the technical field of batteries, in particular to a positive and negative electrode connecting structure of a battery, which comprises: a plurality of battery modules arranged in sequence; each battery module is provided with a first conduction part and a second conduction part; the first conduction part at least comprises a pole seat; the second conduction part of each battery module is connected with the polar seat of the next battery module along the arrangement direction of the plurality of battery modules, and two adjacent battery modules share one polar seat. The application provides a positive negative pole connection structure of battery compares in current electric core module connected mode, has simplified relation of connection and interconnecting link between the positive negative pole of each battery module, has saved the mode that uses the switching copper bar to connect between the traditional adjacent module, has saved the use quantity of output polar seat to can save assembly time, improve assembly efficiency, still be favorable to the control cost.

Description

Positive and negative pole connection structure of battery

Technical Field

The application relates to the technical field of batteries, in particular to a battery anode and cathode connecting structure.

Background

At present, adopt the mode of copper bar cooperation electrode polar seat to connect between the current battery module, connection structure is more complicated, influences battery module's assembly efficiency to the longer condition of copper bar span not only influences assembly efficiency probably appears, still makes manufacturing cost higher.

SUMMERY OF THE UTILITY MODEL

An object of the application is to provide a positive negative pole connection structure of battery to solve to a certain extent and connect complicacy between the current battery module that exists among the prior art, influence the technical problem of the assembly efficiency of battery package.

The application provides a positive negative pole connection structure of battery includes:

a plurality of battery modules arranged in sequence;

each battery module is provided with a first conduction part and a second conduction part; the first conduction part at least comprises a pole seat;

the second conduction part of each battery module is connected with the pole socket of the next battery module along the arrangement direction of the plurality of battery modules, and two adjacent battery modules share one pole socket.

In the above technical solution, further, the battery positive and negative electrode connecting structure further includes a cold plate, and the plurality of battery modules are disposed on the cold plate;

the cold drawing is provided with a fixed part, and the pole seat is arranged on the fixed part.

In any one of the above technical solutions, further, each of the battery modules is provided with a battery cell, and the battery cell is provided with a first pole and a second pole.

In any of the above technical solutions, further, the first conduction part further includes a first pole piece; the battery module is provided with a battery cell, and the first pole piece is connected with the first pole column.

In any of the above technical solutions, further, a first bending portion for bending the first pole piece toward the pole base is formed at one end of the first pole piece away from the first pole;

the pole base is formed with a limiting groove, and the first bending part is located in the limiting groove.

In any one of the above technical solutions, further, the second conduction part includes a second pole piece, and the second pole piece is connected to the second pole piece; the second pole piece is connected with the first pole piece and the pole base of the next battery module along the arrangement direction of the plurality of battery modules.

In any of the above technical solutions, further, the second pole piece is far away from one end of the second pole piece is formed with a second bending portion, the second bending portion faces towards the adjacent pole base of the battery module and bends and is attached to the first bending portion on the pole base.

In any one of the above technical solutions, further, the first bending portion is formed with a first hole portion, and the second bending portion is formed with a second hole portion; the positive and negative electrode connecting structure of the battery further comprises a fastener, and the fastener penetrates through the second hole part and the first hole part to be connected with the electrode base.

In any one of the above technical solutions, further, both the first hole portion and the second hole portion are waist-shaped holes.

In any of the above technical solutions, further, the battery positive-negative electrode connecting structure further includes a terminal battery module, and the plurality of battery modules and the battery modules are sequentially arranged along the first direction;

the tail end battery module is provided with a third conduction part and an external connection conduction part; the third conduction part and the external conduction part at least comprise the pole socket.

Compared with the prior art, the beneficial effect of this application is:

the application provides positive negative pole connection structure of battery includes: a plurality of battery modules arranged in sequence; each battery module is provided with a first conduction part and a second conduction part; the first conduction part at least comprises a pole seat; the second conduction part of each battery module is connected with the polar seat of the next battery module along the arrangement direction of the plurality of battery modules, and two adjacent battery modules share one polar seat.

The application provides a positive negative pole connection structure of battery compares in current electric core module connected mode, has simplified connection relation and interconnecting link between the positive negative pole of each battery module, has saved the mode that uses the switching copper bar to connect between the adjacent module of tradition, has saved the use quantity of output polar seat to can save the assemble duration, improve assembly efficiency.

Drawings

In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a positive-negative electrode connection structure of a battery provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a battery module of a positive-negative electrode connection structure of a battery according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a battery module with a positive-negative electrode connection structure according to an embodiment of the present disclosure;

fig. 4 is an enlarged schematic structural view of the positive and negative electrode connecting structure of the battery provided in fig. 3 at a point a;

fig. 5 is a schematic structural diagram of an end battery module of a positive-negative electrode connection structure of a battery according to an embodiment of the present application.

Reference numerals:

100-battery module, 1-first conducting part, 101-pole base, 1011-limiting groove, 102-first pole piece, 1021-first bending part, 1022-first hole part, 2-second conducting part, 201-second pole piece, 2011-second bending part, 2012-second hole part, 200-terminal battery module, 3-third conducting part, 4-external conducting part, 300-cold plate, a-first direction.

Detailed Description

The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments.

The components of the embodiments of the present application, as generally described and illustrated in the figures herein, could be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application.

All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 application can be understood in a specific case by those of ordinary skill in the art.

A positive-negative electrode connection structure of a battery according to an embodiment of the present application will be described with reference to fig. 1 to 5.

Referring to fig. 1 to 5, an embodiment of the present application provides a positive and negative electrode connecting structure for a battery, including a plurality of battery modules 100, the plurality of battery modules 100 being sequentially arranged along a first direction a, each battery module 100 being provided with a first conduction part 1 and a second conduction part 2, and the first conduction part 1 and the second conduction part 2 are also distributed along the first direction a, the first conduction part 1 and the second conduction part 2 are arranged at both ends of the battery module 100, such that the second conduction part 2 of each cell module 100 is adjacent to the first conduction part 1 of the next cell module 100 arranged along the first direction a, so that the second conduction parts 2 of each of the battery modules 100 can be connected to the first conduction parts 1 of the next battery module 100 adjacent thereto arranged in the first direction a, thereby enabling the plurality of battery modules 100 to be connected in sequence.

The first conduction part 1 and the second conduction part 2 are actually electrodes of the positive-negative electrode connection structure of the battery, and when the first conduction part 1 is a positive electrode, the second conduction part 2 is a negative electrode, and when the first conduction part 1 is a negative electrode, the second conduction part 2 is a positive electrode.

Specifically, each battery module 100 includes a plurality of battery cells, which are connected in sequence, and the most terminal battery cell is provided with a first terminal and a second terminal, the first terminal and the second terminal are respectively an anode terminal and a cathode terminal, the second terminal is used as the cathode terminal when the first terminal is used as the anode terminal, and the second terminal is used as the anode terminal when the first terminal is used as the cathode terminal. Similarly, when the third conduction part 3 is connected to the first pole, the external conduction part 4 is connected to the second pole, so that the battery modules 100 and the end battery module 200 are connected together and can be connected in series with other positive and negative electrode connection structures of the battery, or power is supplied to the outside.

Further, the first conduction part 1 includes a pole base 101 and a first pole piece 102, wherein the first pole piece 102 has an L-shaped structure, the first pole piece 102 is formed with a first bending part 1021, one end of the first pole piece 102 is connected with a first pole of an electric core of the battery module 100, the other end of the first pole piece 102 is bent towards the pole base 101, the upper surface of the pole base 101 is formed with a U-shaped limiting groove 1011, the width of the limiting groove 1011 is approximately equal to the width of the first pole piece 102, so that the first pole piece 102 can be attached to the bottom wall surface of the limiting groove 1011 after the extending direction of the first pole piece 102 is changed by bending the first bending part 1021, and the first pole piece 102 can be limited in the limiting groove 1011, thereby avoiding the occurrence of unexpected situations such as falling off of the first pole piece 102 and the pole base 101, and poor contact.

Further, the second conduction part 2 includes a second pole piece 201, and the second pole piece 201 is used for being connected with the first pole piece 102 of the next battery module 100.

Specifically, the second pole piece 201 is provided with a second bending portion 2011, one end of the second pole piece 201 is connected with the second pole column of the battery cell of the battery module 100, and the other end of the second pole piece 201 is bent towards the next battery module 100 under the action of the second bending portion 2011, so that the second pole piece 201 can be lapped on the part, located in the limiting groove 1011 of the pole base 101, of the first pole piece 102 of the next adjacent battery module 100 and connected, and therefore the two adjacent battery modules 100 are connected in series.

Further, the positive and negative electrode connecting structure for a battery provided in the embodiment of the present application further includes a terminal battery module 200, the terminal battery module 200 is disposed at an interval with a last battery module 100 of the plurality of battery modules 100 sequentially arranged along the first direction a, the terminal battery module 200 is provided with a third conduction part 3 and an external conduction part 4, the third conduction part 3 and the external conduction part 4 are respectively disposed at two ends of the terminal battery module 200 along the first direction a, wherein the third conduction part 3 is connected with the second conduction part 2 of the battery module 100 adjacent to the terminal battery module 200, and when the battery pack includes the plurality of positive and negative electrode connecting structures for a battery, the external conduction part 4 is used for being connected with the first conduction part 1 or the second conduction part 2 of the positive and negative electrode connecting structure for another battery. When the third conduction part 3 is a positive electrode, the external conduction part 4 is a negative electrode, and when the third conduction part 3 is a negative electrode, the external conduction part 4 is a positive electrode.

Since the other battery module 100 is not located in front of the first conduction part 1 of the first battery module 100 among the plurality of battery modules 100, the first conduction part 1 of the first battery module 100 is not connected to the second conduction part 2 of the other battery module 100, and the first conduction part 1 of the first battery module 100 functions as an external conduction part for externally connecting other positive and negative electrode connection structures or electric devices of the battery.

Further, the first bending portion 1021 is formed with a first hole portion 1022, the second bending portion 2011 is formed with a second hole portion 2012, the positive and negative electrode connection structure of a battery provided in the embodiment of the present application further includes a fastening member, the second bending portion 2011 is located above the first bending portion 1021, the second bending portion 2011 is attached to the first bending portion 1021, the first bending portion 1021 is located above the pole base 101 and is attached to the pole base 101, the first hole portion 1022 is disposed right opposite to the second hole portion 2012, so that the first hole portion 1022 and the second hole portion 2012 are concentrically disposed, the fastening member passes through the second hole portion 2012, the first hole portion 1022 and is connected to the pole base 101, thereby connecting the second bending portion 2011, the first bending portion 1021 and the pole base 101, and ensuring the connection strength between two adjacent first pole pieces 102 and second pole pieces 201.

Wherein the fastener may be, but is not limited to, a screw, a pin, etc.

Preferably, the fastener is a bolt, the pole base 101 is hollow, a nut which can be connected with the fastener in an adaptive manner is fixedly arranged inside the pole base 101, and the fastener can be connected with the nut in the base in a threaded manner after sequentially passing through the second hole 2012, the first hole 1022 and the limiting groove 1011, so that the stability among the second pole piece 201, the first pole piece 102 and the pole base 101 is ensured, and the connection mode is detachable connection, and subsequent overhaul and maintenance are facilitated. Certainly, whether do not consider the maintenance process under loaded down with trivial details circumstances, can not choose the fastener, weld first pole piece 102 and base, second pole piece 201 overlap joint to first pole piece 102 and weld and can guarantee the stability between the three equally.

Preferably, the first hole part 1022 and the second hole part 2012 are both waist-shaped holes, and the lengths of the waist-shaped holes are also distributed along the second direction, so as to absorb the tolerance when the first pole piece 102 and the second pole piece 201 are assembled.

It should be further noted that, due to the location and the functional specificity of the end cell module 200, the form and the structure of the third conduction part 3 and the external conduction part 4 of the end cell module 200 are the same as those of the first conduction part 1, and the connection manner is also the same as that described above, which can be fully understood by those skilled in the art.

Preferably, the plurality of battery modules 100 and the end battery module 200 are arranged at intervals along the first direction a, the distance between any two adjacent battery modules 100 is the same, and preferably, the plurality of second pole pieces 201 are used as standard components, and the lengths of the second bending portions 2011 of all the second pole pieces 201 are the same, so that the second bending portions 2011 can be connected with the first bending portions 1021, and meanwhile, the length of the portions of the second bending portions 2011 spanning the two adjacent battery modules 100 is the same as the distance between the two battery modules 100, thereby further eliminating the assembly tolerance and improving the assembly accuracy of the positive-negative electrode connecting structure of the battery.

Preferably, the positive-negative electrode connection structure of the battery provided in the embodiment of the present application further includes a cold plate 300, the plurality of battery modules 100 are disposed on the cold plate 300, and the pole socket 101 is also disposed on the cold plate 300 and is disposed close to the battery modules 100, wherein the connection manner between the pole socket 101 and the cold plate 300 may be, but is not limited to, gluing, welding, and the like. The temperature of the first pole piece 102, the second pole piece 201 and the pole seat 101 may rise in the working process of the battery module 100 and the end battery module 200, and after the first pole piece 102, the second pole piece 201 and the pole seat 101 generate heat, the cold plate 300 can absorb the heat in time, so that the safety of the positive and negative pole connection structure of the battery is ensured.

To sum up, the positive negative pole connection structure of battery that this application provided compares in current electric core module connected mode, has simplified connection relation and interconnecting link between the positive negative pole of each battery module, has saved the mode that uses the switching copper bar to connect between the adjacent module of tradition, has saved the use quantity of output polar seat to can save the assemble duration, improve assembly efficiency. In addition, the positive and negative pole connection structure of the battery reduces the material consumption of the pole piece and the pole seat, and is favorable for controlling the cost.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. A positive negative pole connection structure of battery, its characterized in that includes:

a plurality of battery modules arranged in sequence;

each battery module is provided with a first conduction part and a second conduction part; the first conduction part at least comprises a pole seat;

the second conduction part of each battery module is connected with the pole socket of the next battery module along the arrangement direction of the plurality of battery modules, and two adjacent battery modules share one pole socket.

2. The battery positive-negative electrode connection structure according to claim 1, further comprising a cold plate, wherein the plurality of battery modules are disposed on the cold plate;

the cold drawing is provided with a fixed part, and the pole seat is arranged on the fixed part.

3. The battery positive-negative electrode connection structure according to claim 1, wherein each of the battery modules is provided with a cell provided with a first terminal and a second terminal.

4. The positive-negative electrode connection structure of a battery according to claim 3, wherein the first conduction portion further includes a first pole piece; the battery module is provided with a battery core, and the first pole piece is connected with the first pole column.

5. The battery positive-negative electrode connecting structure according to claim 4, wherein one end of the first pole piece, which is far away from the first pole post, is formed with a first bending portion for bending the first pole piece toward the pole base;

the pole base is formed with a limiting groove, and the first bending part is located in the limiting groove.

6. The positive-negative electrode connecting structure for batteries according to claim 4, wherein the second conducting portion comprises a second pole piece connected to the second pole; the second pole piece is connected with the first pole piece and the pole base of the next battery module along the arrangement direction of the plurality of battery modules.

7. The battery positive-negative electrode connecting structure according to claim 6, wherein a second bending portion is formed at one end of the second electrode tab, which is far away from the second electrode tab, and the second bending portion bends toward the adjacent electrode base of the battery module and is attached to the first bending portion on the electrode base.

8. The positive-negative electrode connection structure for batteries according to claim 7, wherein the first bent portion is formed with a first hole portion, and the second bent portion is formed with a second hole portion; the positive and negative pole connecting structure of the battery further comprises a fastener, and the fastener penetrates through the second hole part and the first hole part to be connected with the pole base.

9. The positive-negative electrode connection structure for batteries according to claim 8, wherein the first hole portion and the second hole portion are both kidney-shaped holes.

10. The positive-negative electrode connection structure for batteries according to any one of claims 1 to 9, further comprising terminal battery modules, wherein a plurality of the battery modules and the battery modules are arranged in order in a first direction;

the tail end battery module is provided with a third conduction part and an external connection conduction part; the third conduction part and the external conduction part at least comprise the pole socket.

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