CN220544127U - Battery pack - Google Patents

Abstract

The utility model discloses a battery pack which comprises a box body, a battery module, a collecting plate and a connector set. The box body is internally provided with a plurality of accommodating spaces which are spaced along a first direction, and two ends of the box body in the first direction are respectively provided with a first end and a second end; the battery module comprises a plurality of groups of battery packs, and each accommodating space is internally provided with a battery pack; each accommodating space is internally provided with an acquisition plate which is connected with a plurality of electric cores in the corresponding battery pack; the connector group is located on the box and is located first end, and the connector group includes a plurality of connectors, and a plurality of connectors correspond with a plurality of collection boards that arrange in the first direction and are connected, wherein, with the adjacent collection board of first end with correspond the connector lug connection, the one end that is close to first end of other collection boards is connected with connecting portion, connecting portion and connector connection. According to the battery pack, the wire harness connected with the connector in the battery pack is concentrated to the first end, the wiring area of the wire harness is concentrated, and the space of the battery pack can be saved.

Description

Battery pack

Technical Field

The utility model mainly relates to the field of new energy batteries, in particular to a battery pack.

Background

The acquisition of the voltage signal of the battery module needs to be transferred to the wiring harness by the acquisition board, the wiring harness has larger space requirement on the battery pack, and larger installation space is needed when the battery pack is installed.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a battery pack, wherein the wire harness connected with the connector in the battery pack is concentrated to the first end, the wiring area of the wire harness is concentrated, and the space of the battery pack can be saved.

The battery pack comprises a box body, a battery module, a collecting plate and a connector set. The box body is internally provided with a plurality of accommodating spaces which are spaced along a first direction, and two ends of the box body in the first direction are respectively a first end and a second end; the battery module comprises a plurality of groups of battery packs, and each accommodating space is internally provided with the battery pack; the collecting plates are arranged in each accommodating space and are connected with a plurality of corresponding electric cores in the battery pack; the connector group is located on the box and is located the first end, the connector group includes a plurality of connectors, a plurality of the connector with a plurality of that arrange in the first direction gather the board and correspond and be connected, wherein with the adjacent accommodation space of first end gather the board with correspond the connector lug connection, remaining gather the board be close to the one end of first end is connected with connecting portion, connecting portion with the connector connection.

According to the battery pack disclosed by the embodiment of the utility model, the acquisition plates and the battery packs are respectively arranged in the accommodating spaces of the box body, the acquisition plates are connected with the battery packs, the voltage signals of the battery packs can be acquired, the two ends of the box body in the first direction are respectively provided with the first end and the second end, the connector group is arranged on the box body and positioned at the first end, the connector group comprises a plurality of connectors, the connectors are correspondingly connected with the acquisition plates distributed in the first direction, and the voltage signals collected on each acquisition plate can be transmitted to the corresponding connected connectors. The voltage signal in the connector can be transferred to the BMS through the wire harness, so that the monitoring of the voltage signal of the battery core is realized, the wire harness connected with the connector can be concentrated to the first end, the wiring area of the wire harness is concentrated, and the space of the battery pack can be saved.

In some embodiments of the utility model, the connection portion is arranged in a stack with the acquisition plate on a side of the acquisition plate connected to the connection portion near the first end.

In some embodiments of the utility model, when the acquisition board is greater than two in the first direction, a plurality of the connection portions are stacked.

In some embodiments of the utility model, two adjacent accommodating spaces are separated by a beam along the first direction, the beam extends along a second direction, the second direction is perpendicular to the first direction, and the connecting part connected on the collecting plate on the side of the beam away from the first end is supported on the beam.

In some embodiments of the utility model, a plurality of the connectors in the same set of the connectors are spaced apart in the first direction.

In some embodiments of the utility model, the battery pack further comprises a fixing bracket, the fixing bracket comprises a first fixing portion and a second fixing portion, one of the plurality of collecting plates is connected with the first fixing portion, the connector set is connected with the second fixing portion, the second fixing portion is connected with the peripheral wall of the box body at the first end, and the first fixing portion and the second fixing portion are split pieces formed by breaking one component.

In some embodiments of the present utility model, a plurality of collecting plates spaced apart along a second direction are disposed in each of the accommodating spaces, the connector sets are a plurality of sets spaced apart along the second direction, the plurality of sets of connector sets correspond to the plurality of collecting plates spaced apart along the second direction one by one, and the first direction is perpendicular to the second direction; and/or the accommodating spaces are arranged in a plurality of rows which are spaced along a second direction, the second direction is perpendicular to the first direction, the connector groups are arranged in a plurality of groups which are spaced along the second direction, and each accommodating space is opposite to at least one connector group in the first direction.

In some embodiments of the present utility model, a patch temperature sensor is disposed on one side of the thickness direction of the collecting plate, and the other side of the thickness direction of the collecting plate is attached to the top cover of the battery cell.

In some embodiments of the utility model, a heat-conducting silica gel pad is arranged between the acquisition board and the top cover of the battery cell.

In some embodiments of the present utility model, a reinforcing plate is disposed on a side of the collecting plate facing away from the patch temperature sensor, and the reinforcing plate is disposed opposite to the patch temperature sensor.

Additional aspects and advantages of the utility model 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 utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a top view of a partial structure of a battery pack according to an embodiment of the present utility model;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is an enlarged view at B in FIG. 1;

fig. 4 is a top view of a collection plate and connector set of a battery pack according to an embodiment of the utility model;

fig. 5 is a perspective view of a partial structure of a battery pack according to an embodiment of the present utility model;

fig. 6 is another perspective view of a partial structure of a battery pack according to an embodiment of the present utility model.

Reference numerals:

100. a battery pack;

1. a case;

11. an accommodation space; 12. a first end; 13. a second end; 14. a cross beam;

2. a top cover; 3. a collection plate; 31. a connection part; 4. a connector set; 41. a connector;

5. a fixed bracket; 51. a first fixing portion; 52. a second fixing portion;

6. a patch temperature sensor; 7. a thermally conductive silicone pad; 8. and a reinforcing plate.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

A battery pack 100 according to an embodiment of the present utility model is described below with reference to fig. 1 to 6.

As shown in fig. 1 to 3, a battery pack 100 according to an embodiment of the present utility model includes a case 1, a battery module, a collection plate 3, and a connector set 4.

Specifically, as shown in fig. 1, the case 1 has a plurality of accommodation spaces 11 therein spaced apart in a first direction (a direction a shown in fig. 1), and both ends of the case 1 in the first direction are a first end 12 and a second end 13, respectively. The battery module includes multiunit group battery, all is equipped with the group battery in every accommodation space 11, and multiunit group battery can separate the arrangement, can reduce the risk of transferring other adjacent group battery when single group battery appears thermal runaway. As shown in fig. 4, each accommodating space 11 is internally provided with an acquisition board 3, the acquisition board 3 is connected with a plurality of electric cores in the corresponding battery pack, the electric cores are arranged in the single accommodating space 11 along the first direction, the acquisition board 3 is arranged at one end of the electric core in the length direction (the b direction shown in fig. 1), and voltage signals of the electric cores can be acquired.

It will be appreciated that the voltage signal of the battery cell may be transmitted to a module busbar, which is welded to the acquisition board 3. The wiring of collection board 3 is the copper foil, and insulating protection film has been laid in the copper foil outside, and the position that needs and busbar welded is with the protection film processing of windowing, exposes the copper foil, and copper foil tinning or heavy golden processing strengthen the solderability of copper foil, through ultrasonic welding's mode, welds the copper foil of collection board 3 with the busbar together, can transmit the voltage signal on the busbar to collection board 3.

As shown in fig. 1 and 3, the connector set 4 is disposed on the case 1 and is located at the first end 12, the connector set 4 includes a plurality of connectors 41, the plurality of connectors 41 are correspondingly connected with a plurality of acquisition boards 3 arranged in the first direction, and voltage signals collected on each acquisition board 3 can be transferred to the connectors 41 correspondingly connected. The voltage signal in the connector 41 can be transferred to the BMS (Battery Management System ) through a wire harness, so that the monitoring of the voltage signal of the battery cell is realized.

Wherein, the collecting board 3 of the accommodation space adjacent to the first end 12 is directly connected with the corresponding connector 41, one end of the other collecting boards 3 close to the first end 12 is connected with the connecting portion 31, the connecting portion 31 is connected with the connector 41, and the voltage signals collected on the other collecting boards 3 can be transmitted to the connector 41 at the first end 12 through the connecting portion 31. The harness connected to the connector 41 can be concentrated to the first end 12, the routing area of the harness is concentrated, and the space of the battery pack 100 can be saved.

In the present embodiment, the pickup board 3 may be an FPC (Flexible Printed Circuit, flexible circuit board).

According to the battery pack 100 of the embodiment of the utility model, the collection board 3 and the battery pack are respectively arranged in the plurality of accommodating spaces 11 of the box body 1, the collection board 3 is connected with a plurality of electric cores in the corresponding battery pack, voltage signals of the electric cores can be collected, two ends of the box body 1 in the first direction are respectively provided with the first end 12 and the second end 13, the connector set 4 is arranged on the box body 1 and positioned at the first end 12, the connector set 4 comprises a plurality of connectors 41, the connectors 41 are correspondingly connected with the collection boards 3 arranged in the first direction, and the voltage signals collected on each collection board 3 can be transmitted to the corresponding connected connectors 41. The voltage signal in the connector 41 can be transferred to the BMS through the wire harness, so that the monitoring of the voltage signal of the battery cell is realized, the wire harness connected with the connector 41 can be concentrated to the first end 12, the wiring area of the wire harness is concentrated, and the space of the battery pack 100 can be saved.

In some embodiments of the present utility model, as shown in fig. 1 and 2, the connection part 31 is stacked with the acquisition plate 3 positioned at a side of the acquisition plate 3 connected to the connection part 31 near the first end 12. While the voltage signal collected by the collection plate 3 is transmitted to the first end 12, the installation space required for the connection part 31 can be saved, and the volume of the battery pack 100 can be made smaller.

In some embodiments of the utility model, when the acquisition board 3 is greater than two in the first direction, the plurality of connection portions 31 are arranged in a stacked manner. The installation space required for the connection part 31 can be saved, and the space occupied by the plurality of collecting plates 3 in the battery pack 100 can be saved, so that the battery pack 100 has a smaller volume.

In some embodiments of the present utility model, as shown in fig. 1 and 2, two adjacent accommodating spaces 11 are separated by a beam 14, the beam 14 extends along a second direction (b direction shown in fig. 1) perpendicular to the first direction, so that the two adjacent accommodating spaces 11 form a regular cuboid or cube space, which is convenient for installing a battery pack, a connection part 31 connected to the collecting plate 3 on a side of the beam 14 away from the first end 12 is supported on the beam 14, and the beam 14 can provide support for the connection part 31, so that the position of the connection part 31 is more reliable.

In some embodiments of the present utility model, as shown in fig. 1 and 3, a plurality of connectors 41 in the same group of connectors 4 are arranged at intervals in the first direction. Avoiding spark generation when a single connector 41 fails, and avoiding ignition of other connectors 41 in the same group 4 of connectors of the failed connector 41, makes the battery pack 100 safer and more reliable. And the plurality of connectors 41 are arranged in a stacked manner in the first direction such that the space occupied by the connector group 4 in the battery pack 100 is small.

In some embodiments of the present utility model, as shown in fig. 1 and 3, the battery pack 100 further includes a fixing bracket 5, the fixing bracket 5 includes a first fixing portion 51 and a second fixing portion 52, one of the plurality of collecting plates 3 is connected to the first fixing portion 51, the connector set 4 is connected to the second fixing portion 52, the second fixing portion 52 is connected to the outer peripheral wall of the case 1 at the first end 12, and the first fixing portion 51 and the second fixing portion 52 are separate pieces formed by breaking one piece. After the collection plate 3 and the connector set 4 are assembled, the collection plate 3 and the connector set 4 are integrally installed in the box body 1, and at the moment, the first fixing portion 51 and the second fixing portion 52 are one component, so that the collection plate 3 can be fixed, and damage to the collection plate 3 when the collection plate is installed in the box body 1 is avoided. After the first fixing portion 51 and the second fixing portion 52 are broken to form a split piece, the connector set 4 and the second fixing portion 52 can be limited at the peripheral wall of the first end 12 of the box 1, when the battery pack 100 is impacted, the impact force applied to the connector set 4 can be transmitted to the second fixing portion 52 and the peripheral wall of the first end 12, and the connector set 4 can be protected, so that the connector set 4 is safer and more reliable.

In some embodiments of the present utility model, as shown in fig. 4 and 5, a plurality of collection plates 3 spaced apart along the second direction are disposed in each accommodation space 11, the connector groups 4 are multiple groups spaced apart along the second direction, the multiple groups of connector groups 4 are in one-to-one correspondence with the plurality of collection plates 3 spaced apart along the second direction, and the first direction is perpendicular to the second direction; and/or the accommodation spaces 11 are arranged in a plurality of rows spaced apart along the second direction, the second direction is perpendicular to the first direction, the connector groups 4 are arranged in a plurality of rows spaced apart along the second direction, and each accommodation space 11 is arranged opposite to at least one connector group 4 in the first direction.

It can be understood that a plurality of collecting plates 3 spaced along the second direction are arranged in each accommodating space 11, the connector groups 4 are a plurality of groups spaced along the second direction, the connector groups 4 of the plurality of groups are in one-to-one correspondence with the collecting plates 3 spaced along the second direction, and the first direction is perpendicular to the second direction; or the accommodation spaces 11 are arranged in a plurality of rows spaced apart along the second direction, the second direction is perpendicular to the first direction, the connector groups 4 are arranged in a plurality of rows spaced apart along the second direction, and each accommodation space 11 is arranged opposite to at least one connector group 4 along the first direction; or a plurality of acquisition boards 3 spaced along the second direction are arranged in each accommodating space 11, the connector groups 4 are a plurality of groups spaced along the second direction, the connector groups 4 of the plurality of groups are in one-to-one correspondence with the plurality of acquisition boards 3 spaced along the second direction, the first direction is perpendicular to the second direction, the accommodating spaces 11 are a plurality of rows spaced along the second direction, the second direction is perpendicular to the first direction, the connector groups 4 are a plurality of groups spaced along the second direction, and each accommodating space 11 is opposite to at least one connector group 4 in the first direction.

In this embodiment, two collection plates 3 spaced apart along the second direction are disposed in each of the accommodation spaces 11, the accommodation spaces 11 are two rows spaced apart along the second direction, the second direction is perpendicular to the first direction, the connector sets 4 are four sets spaced apart along the second direction, the four sets of connector sets 4 are in one-to-one correspondence with the four collection plates 3 spaced apart along the second direction, and each accommodation space 11 is disposed opposite to the two connector sets 4 in the first direction. The collecting plates 3 are arranged on two sides of the battery pack in the accommodating space 11 in the second direction, and can collect the voltage signals of the current cores on two sides of the battery pack in the second direction and transmit the voltage signals to the corresponding connector sets 4 respectively, so that the collecting process of the voltage signals is smooth.

In some embodiments of the present utility model, as shown in fig. 1 and 6, one side of the thickness direction of the collection plate 3 is provided with a patch temperature sensor 6, and the other side of the thickness direction of the collection plate 3 is attached to the top cover 2 of the battery cell. The temperature of electric core is transmitted to the top cover 2 of electric core to on the paster temperature sensor 6 that is located the opposite side of collection board 3 is transmitted to through the collection board 3 of copper foil texture, can detect the temperature of electric core through paster temperature sensor 6, can in time pay attention to the temperature situation of electric core, in time handle when electric core temperature is out of control, increase the reliability of battery.

Further, as shown in fig. 1 and 6, a heat-conducting silica gel pad 7 is arranged between the acquisition board 3 and the top cover 2 of the battery cell. When the battery pack 100 moves or the battery pack 100 is impacted, the impact force of the battery core and the acquisition board 3 can be absorbed, the battery core and the acquisition board 3 are buffered, and the heat-conducting silica gel pad 7 has a good heat-conducting effect, so that the temperature of the battery core can be ensured to be smoothly transferred to the acquisition board 3 and the patch temperature sensor 6, and the attention to the temperature condition of the battery core is realized.

In some embodiments of the present utility model, as shown in fig. 1 and 6, a stiffening plate 8 is provided on a side of the acquisition plate 3 facing away from the patch temperature sensor 6, the stiffening plate 8 being disposed opposite the patch temperature sensor 6. The strength of the collecting plate 3 at the position of the patch temperature sensor 6 can be improved, and the whole assembly of the battery pack 100 is facilitated.

Other constructions and operations of the battery pack 100 according to the embodiment of the present utility model are known to those of ordinary skill in the art, and will not be described in detail herein.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

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

Claims (10)

1. A battery pack, comprising:

the box body is internally provided with a plurality of accommodating spaces which are spaced along a first direction, and two ends of the box body in the first direction are respectively a first end and a second end;

the battery module comprises a plurality of groups of battery packs, and each accommodating space is internally provided with the battery pack;

the collecting plates are arranged in each accommodating space and are connected with a plurality of corresponding electric cores in the battery pack;

the connector set is arranged on the box body and positioned at the first end, the connector set comprises a plurality of connectors, the connectors are correspondingly connected with the acquisition boards arranged in the first direction,

the collecting plate of the accommodating space adjacent to the first end is directly connected with the corresponding connector, one end, close to the first end, of the collecting plate is connected with a connecting portion, and the connecting portion is connected with the connector.

2. The battery pack according to claim 1, wherein the connection portion is provided in a stacked manner with the collecting plate located on a side of the collecting plate connected to the connection portion near the first end.

3. The battery pack according to claim 1, wherein a plurality of the connection portions are stacked when the collecting plate is greater than two in the first direction.

4. The battery pack according to claim 1, wherein two adjacent receiving spaces are spaced apart by a cross member in the first direction, the cross member extending in a second direction perpendicular to the first direction, the connection portion connected to the collecting plate on a side of the cross member remote from the first end being supported on the cross member.

5. The battery pack according to claim 1, wherein a plurality of the connectors in the same group of the connectors are arranged at intervals in the first direction.

6. The battery pack of claim 1, further comprising:

the fixed support comprises a first fixed part and a second fixed part, one of the acquisition boards is connected with the first fixed part, the connector set is connected with the second fixed part, the second fixed part is connected with the peripheral wall of the first end of the box body, and the first fixed part and the second fixed part are split pieces formed by breaking one component.

7. The battery pack according to claim 1, wherein a plurality of collecting plates spaced apart in a second direction are provided in each of the accommodation spaces, the connector groups are a plurality of groups spaced apart in the second direction, the plurality of groups of the connector groups correspond one-to-one to the plurality of collecting plates spaced apart in the second direction, and the first direction is perpendicular to the second direction;

and/or the accommodating spaces are arranged in a plurality of rows which are spaced along a second direction, the second direction is perpendicular to the first direction, the connector groups are arranged in a plurality of groups which are spaced along the second direction, and each accommodating space is opposite to at least one connector group in the first direction.

8. The battery pack according to claim 1, wherein one side in the thickness direction of the collecting plate is provided with a patch temperature sensor, and the other side in the thickness direction of the collecting plate is attached to the top cover of the battery cell.

9. The battery pack of claim 8, wherein a thermally conductive silicone pad is disposed between the acquisition board and the top cover of the cell.

10. The battery pack of claim 8, wherein a stiffening plate is disposed on a side of the acquisition plate facing away from the patch temperature sensor, the stiffening plate being disposed opposite the patch temperature sensor.