CN218351581U

CN218351581U - Battery pack and electric device

Info

Publication number: CN218351581U
Application number: CN202221900982.6U
Authority: CN
Inventors: 陈保国; 刘峰; 蒋建云
Original assignee: Tianjin EV Energies Co Ltd
Current assignee: Tianjin EV Energies Co Ltd
Priority date: 2022-07-21
Filing date: 2022-07-21
Publication date: 2023-01-20
Anticipated expiration: 2032-07-21

Abstract

The utility model provides a battery pack and an electric device, wherein the battery pack comprises a box body, a supporting rib plate is arranged in the box body, and the box body is divided into a first accommodating cavity and a second accommodating cavity by the supporting rib plate; the first accommodation chamber in be provided with two layer at least module units that stack gradually, adjacent two-layer be equipped with the fixed bolster between the module unit, the fixed bolster be used for supporting the fixed module unit that is located the one deck, the fixed bolster with be located the next floor the module unit support leaves the clearance, the fixed bolster can dismantle the connection the box, the second accommodation chamber in be provided with total control unit. The utility model discloses the structure is various, convenient to detach, and battery space utilization is high, can arrange more electric quantity.

Description

Battery pack and electric device

Technical Field

The utility model belongs to the technical field of new energy automobile, a battery package and electric actuator is related to.

Background

At present, the application field of lithium ion batteries in the market is more and more extensive, and the lithium ion batteries are more used in the automobile field. As the market has developed, the need for hard-shell battery packs has increased, primarily in view of their better safety than pouch batteries.

Among the current crust battery package system, use sticky mode to fix the module unit of square shell electricity core constitution in the battery package, increased the battery system and repaired the time dismantlement degree of difficulty, can't repair even, and need clear up inside fastening glue after taking out the module unit, the clearance work load is big, still can lead to the inside impurity pollution of battery package at the clearance process, influences the performance of battery package.

In addition, along with the demand of market high-power, the battery package needs can satisfy diversified form of arranging, and prior art mainly arranges with one deck module unit, and the electric capacity is not high. Therefore, improvement of the structure of the battery system is required to increase the diversity of the battery to meet the market demand.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a battery package and electric actuator, the structure is various, convenient to detach, and battery space utilization is high, can arrange more electric quantity.

To achieve the purpose, the utility model adopts the following technical proposal:

in a first aspect, the utility model provides a battery pack, which comprises a box body, wherein a supporting rib plate is arranged in the box body, and the box body is divided into a first accommodating cavity and a second accommodating cavity by the supporting rib plate;

the first accommodation chamber in be provided with two-layer at least module unit that stacks gradually, adjacent two-layer be equipped with the fixed bolster between the module unit, the fixed bolster be used for supporting fixed being located the one deck module unit, the fixed bolster with be located the next floor the module unit support leaves the clearance, the fixed bolster can dismantle the connection the box, the second accommodation chamber in be provided with total accuse unit.

As a preferred technical scheme of the utility model, the fixed bolster include the framework, the framework bolt fastening in the box in.

As a preferred technical scheme of the utility model, follow the inner wall of first accommodation chamber encircles and is provided with the location boss, the location boss with the support rib plate forms and is used for supporting the bearing structure of framework.

The frame body is fixed on the positioning boss and the upper end of the support rib plate through bolts.

As a preferred technical scheme of the utility model, the framework in be provided with mutually perpendicular's horizontal strengthening rib and vertical strengthening rib.

As a preferred technical scheme of the utility model, the bottom that first holds the cavity sets up the support riser, the support riser with vertical strengthening rib offsets and supports.

As a preferred technical scheme of the utility model, the module unit bolted connection that is located the one deck the fixed bolster.

As a preferred technical scheme of the utility model, the module unit with interval between the inner wall of box is 8 ~ 12mm.

As a preferred technical scheme of the utility model, the fixed bolster with be located the one deck down the clearance of module unit is more than or equal to 2mm.

As a preferred technical scheme of the utility model, total accuse unit include electric box and main control assembly, electric box with main control assembly is fixed in respectively the second holds the inner wall of cavity.

And the surface of one side of the module unit, which is close to the second accommodating chamber, is respectively and independently provided with a slave control assembly, and the slave control assemblies are electrically connected with the master control assembly.

In a second aspect, the present invention provides an electric device comprising the battery pack of the first aspect.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) The utility model provides a battery pack and electric actuator, adopt the support gusset to divide into two holding chambers about the box, arrange electric master control device in one holding chamber, set up the battery module in the other holding chamber, rationally distributed, novel structure will follow the accuse subassembly and fix at the module and go out the extreme, save space to satisfy the diversified demand in market;

(2) The utility model provides a battery pack and electric device, through the mode of overall arrangement multilayer module unit in the battery box to set up the fixed bolster between two adjacent module units, make the battery overall arrangement compact, make full use of high space, improved the space utilization in the battery;

(3) The utility model provides a pair of can dismantle connected mode between each part in the battery package, inspection and the maintenance of the follow-up battery system of being convenient for.

Drawings

Fig. 1 is a schematic structural diagram of a battery pack provided in embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of a module unit provided in embodiment 1 of the present invention;

fig. 3 is a schematic structural diagram of a hard shell battery cell in a module unit provided in embodiment 1 of the present invention;

fig. 4 is a schematic structural view of a fixing bracket provided in embodiment 1 of the present invention;

fig. 5 is a schematic structural diagram of a box provided in embodiment 1 of the present invention.

Wherein, 1-a box body; 2-a first module unit; 3-a second module unit; 4-supporting the rib plate; 5-fixing a bracket; 6-upper cover plate; 7-a first containment chamber; 8-a second containment chamber; 9-high voltage plug-in; 10-an electrical box; 11-low pressure insert; 12-a slave control assembly; 13-a master control component; 14-supporting a vertical plate; 15-positioning the boss; 16-a frame body; 17-longitudinal reinforcing ribs; 18-transverse reinforcing ribs; 19-hard shell cell.

Detailed Description

It is to be understood that in the description of the present invention, the terms "central," "longitudinal," "lateral," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings only for the convenience of description and simplicity of description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting. Furthermore, the terms "first", "second", etc. 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," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

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

The battery mainly adopts individual layer module unit to arrange now, and space utilization is the first, has reduced the battery and has stored the electric capacity, and in addition, the fixed mode of gluing that adopts in the battery package has increased the degree of difficulty of battery system when repairing the dismantlement, has influenced the performance of battery package.

At least in order to solve the above problems, in a specific embodiment, the present invention provides a battery pack, which includes a box body 1, a supporting rib plate 4 is disposed in the box body 1, and the supporting rib plate 4 divides the box body 1 into a first accommodating chamber 7 and a second accommodating chamber 8;

be provided with two-layer at least module unit that stacks gradually in the first cavity 7 that holds, be equipped with fixed bolster 5 between the adjacent two-layer module unit, fixed bolster 5 is used for supporting the fixed module unit that is located the one deck, and fixed bolster 5 leaves the clearance with the module unit support that is located the one deck down, and fixed bolster 5 can be dismantled and connect box 1, and the second holds and is provided with total accuse unit in the cavity 8.

The utility model discloses the first cavity 7 and the second that holds that sets up about dividing into with box 1 is held cavity 8 with support gusset 4 in well box 1, and wherein, the first cavity 7 that holds is used for holding the module unit, and the second holds cavity 8 and is used for holding total accuse unit, and is rationally distributed to satisfy market diversified demand.

In some embodiments, the box 1 is made of a section with a height of more than or equal to 300 mm.

Compare in traditional individual layer battery module's design, the utility model discloses by lower two-layer module unit at least of supreme overall arrangement in box 1's first accommodation cavity 7, module cell structure comprises a plurality of two-way crust electricity core 19 that play utmost point that stack gradually, adopt the fastening glue to bond between two adjacent crust electricity core 19, adopt bolted connection between module unit and the box 1, the structural stability of battery has been improved, reduce the structure that module unit constitutes, make full use of battery box 1's Z is to high space simultaneously, improve the inside space utilization of battery, realize big electric quantity overall arrangement in the finite space.

In some embodiments, the fixed bracket 5 includes a frame 16, and the frame 16 is bolted into the case 1.

In some embodiments, the inner wall of the first accommodating chamber 7 is provided with a positioning boss 15 around, and the positioning boss 15 and the support rib plate 4 form a support structure for supporting the frame body 16. The frame body 16 is fixed on the positioning boss 15 and the upper end of the support rib plate 4 by bolts.

In some embodiments, transverse ribs 18 and longitudinal ribs 17 are disposed within the frame 16 perpendicular to each other.

The utility model discloses in framework 16, horizontal strengthening rib 18 and vertical strengthening rib 17 difference bolted connection box 1 at fixed bolster 5, structural strength is high, can support the module unit, and the distance between two adjacent module units of reasonable control is favorable to improving the security performance of battery.

In some embodiments, a supporting riser 14 is provided at the bottom of the first housing chamber 7, the supporting riser 14 being supported against a longitudinal reinforcement 17.

In some embodiments, the module unit is bolted connection with the bottom of box 1, compares in traditional sticky fixed mode, the utility model discloses a connected mode can be dismantled, is convenient for carry out module unit's inspection and maintenance.

The utility model discloses in first chamber 7 that holds, inner wall (the inner wall of 1 three sides of box) along box 1 is equipped with location boss 15, and wherein, support riser 14, support rib plate 4 and location boss 15 form the holding surface that supports fixed bolster 5, have promoted the stability between the module unit, vertically carry out the multilayer overall arrangement, have improved the structural strength of battery. The distance between two adjacent module units is controlled within 4-7 mm, and the utilization rate of space is improved on the premise of considering the safe distance. The space inside the battery is distributed according to the extrusion intrusion amount of the battery in the XYZ (three mutually perpendicular coordinate directions, wherein, taking the box body 1 as an example, the X direction is the extending direction of the length of the box body 1, the Y direction is the extending direction of the width of the box body 1, and the Z direction is the extending direction of the height of the box body 1) direction, so that the space can be fully utilized, the electricity quantity distribution is maximized, the integral strength of the battery pack is improved by using the front end of the battery pack as a cross beam structure, and the intrusion amount is reduced.

In some embodiments, the module unit located at the upper layer is bolted to the fixing bracket 5.

In some embodiments, the distance between the module unit and the inner wall of the housing 1 is 8 to 12mm, for example 8mm, 9mm, 10mm, 11mm or 12mm, but is not limited to the values listed, and other values not listed in this range are equally applicable.

The utility model discloses interval between the inner wall of well module unit and box 1 indicates, module unit and the interval that is located between the inner wall of the first box 1 that holds in the cavity 7. The utility model discloses inject the interval between module unit and the 1 inner wall of box to the deflection/the inside invasion volume of the extrusion emulation of ensureing XY direction are less than or equal to the interval, have improved structural strength, guarantee the security and the stability of battery.

In some embodiments, the gap between the fixing bracket 5 and the module unit located at the next layer is greater than or equal to 2mm. The utility model discloses well fixed bolster 5 is less than or equal to the fixed bolster 5 and is located the distance between the module unit of one deck down at the plane degree of Z direction, guarantees the safe distance between two adjacent module units.

In some embodiments, the master control unit includes an electrical box 10 and a master control assembly 13, and the electrical box 10 and the master control assembly 13 are respectively fixed on the inner wall of the second accommodating chamber 8.

The module unit is provided with a slave control assembly 12 on one side surface close to the second accommodating chamber 8, and the slave control assembly 12 is electrically connected with the master control assembly 13.

The utility model provides an electric box 10 is provided with Battery energy Distribution Unit (Battery energy Distribution Unit, BDU) in, contains system main road contactor (open/cut off Battery package main road direct current) among the BDU that prior art and technical staff in the field have known, main parts such as pre-charge relay (the instantaneous heavy current impact when protecting high voltage circuit to avoid the system to go up electricity) and current sensor (be used for measuring and calculating Battery package capacity).

In some embodiments, the master control unit further includes a high voltage plug 9 and a low voltage plug 11, the high voltage plug 9 and the low voltage plug 11 are respectively disposed on the outer surface of the box 1, and the high voltage plug 9 and the low voltage plug 11 are respectively connected to the electrical box 10.

The utility model provides an electric box 10, main control assembly 13, high-pressure plug-in components 9, low pressure plug-in components 11, utilize the collection pencil to connect between accuse subassembly 12 and the module unit and form battery circuit.

In some embodiments, the battery pack further comprises an upper cover plate 6, and the upper cover plate 6 is detachably connected with the case body 1.

The utility model provides an use flange face bolt-up between upper cover plate 6 and the box 1, the middle part of upper cover plate 6 sets up a plurality of fixed points, supports upper cover plate 6 through inside support piece, and support piece is through the bolt fastening on fixed bolster 5. The utility model discloses in on Z upwards, according to the holistic height of module unit and extrusion invasion amount, overall arrangement box 1 and module unit to and the interval between module unit and the upper cover plate 6.

In another embodiment, the present invention provides an electric device comprising the battery pack of one embodiment.

The utility model provides an electric actuator adopts above-mentioned battery package, and it is big to have the electric capacity, and space utilization is high characteristics have reduced battery portion's occupation space, are favorable to electric actuator's overall arrangement.

Example 1

The embodiment provides a battery pack, which comprises a box body 1 and a master control unit, wherein as shown in fig. 1, a supporting rib plate 4 is arranged in the box body 1, the supporting rib plate 4 divides the box body 1 into a first accommodating chamber 7 and a second accommodating chamber 8 which are arranged in the left and right directions, wherein the first accommodating chamber 7 is used for accommodating a module unit, and the second accommodating chamber 8 is used for accommodating the master control unit.

As shown in fig. 2 and 3, a first module unit 2 and a second module unit 3 are sequentially stacked from bottom to top in the first accommodating chamber 7, a fixing bracket 5 is disposed between the first module unit 2 and the second module unit 3, and the fixing bracket 5 is used for supporting and fixing the first module unit 2. First module unit 2 comprises five two-way play utmost point's crust electricity core 19 that range upon range of in proper order with second module unit 3 independently, adopts the fastening glue to bond between two adjacent crust electricity cores 19, and

first module unit

2 and 3 module units of second module unit adopt bolted connection respectively with between the box 1, have improved the structural stability of battery, reduce to constitute the structure.

As shown in fig. 4, the fixing bracket 5 includes a frame 16, and a transverse rib 18 and a longitudinal rib 17 perpendicular to each other are provided in the frame 16. The frame 16, the transverse reinforcing ribs 18 and the longitudinal reinforcing ribs 17 are respectively connected with the box body 1 through bolts. Second module unit 3 bolted connection fixed bolster 5, the distance between fixed bolster 5 and the first module unit 2 is 2mm, and the interval between first module unit 2 and the second module unit 3 is 5mm, and the distance between two adjacent module units of rational control has improved the security performance of battery.

As shown in fig. 5, a positioning boss 15 is provided around the inner wall of the first accommodating chamber 7, and a frame 16 is bolted to the positioning boss 15 and the upper end of the support rib plate 4. The bottom of the first accommodating chamber 7 is provided with the supporting vertical plates 14 side by side, the supporting vertical plates 14 abut against the longitudinal reinforcing ribs 17 for supporting, and the supporting vertical plates 14, the positioning bosses 15 and the supporting rib plates 4 form a supporting surface for supporting the fixing support 5, so that the stability between the first module unit 2 and the second module unit 3 is improved.

The box 1 is 2000mm 1000mm 300 mm's aluminum hull section bar, and the top of box 1 sets up upper cover plate 6, uses flange face bolt-up between upper cover plate 6 and the box 1, and the middle part of upper cover plate 6 sets up four fixed points, supports upper cover plate 6 through inside support piece, and support piece is through the bolt fastening on fixed bolster 5. The distances between the first module unit 2 and the second module unit 3 and the inner wall of the box body 1 are respectively 10mm, so that the deformation/internal invasion amount of the extrusion simulation in the XY direction is ensured, the structural strength is improved, and the safety and the stability of the battery are ensured.

As shown in fig. 1, the master control unit includes an electrical box 10, a master control assembly 13, a high voltage plug-in unit 9 and a low voltage plug-in unit 11, and a BDU is disposed in the electrical box 10. The electrical box 10 and the main control assembly 13 are respectively disposed in the second accommodating chamber 8, the first module unit 2 and the second module unit 3 are respectively and independently provided with a slave control assembly 12 at a side close to the second accommodating chamber 8, and the slave control assembly 12 is electrically connected to the main control assembly 13. The high-voltage plug-in 9 and the low-voltage plug-in 11 are respectively arranged on the outer surface of the box body 1, and the high-voltage plug-in 9 and the low-voltage plug-in 11 are respectively connected with the electrical box 10. The electrical box 10, the master control assembly 13, the high-voltage plug-in 9, the low-voltage plug-in 11 and the slave control assembly 12 are connected with the first module unit 2 and the second module unit 3 through the collection wire harness to form a battery circuit.

The embodiment lays out the internal space of the battery according to the extrusion intrusion amount of the battery pack in the XYZ direction, can fully utilize the space and can realize the maximum electric quantity layout.

Example 2

The present embodiment provides an electric device, including a battery pack, wherein the structure and the working principle of the battery pack are the same as those of embodiment 1, and are not described herein again. By adopting the battery pack, the multilayer module units are distributed in the battery box body 1, so that the storage electric quantity is improved, and the fixing support 5 is arranged between the two adjacent module units, so that the battery is compact in layout, the height space is fully utilized, the space utilization rate inside the battery is improved, the occupied space of the battery part is reduced, and the whole layout of the electric device is facilitated.

The applicant states that the above description is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present invention are within the protection scope and the disclosure scope of the present invention.

Claims

1. The battery pack is characterized by comprising a box body, wherein a supporting rib plate is arranged in the box body, and the box body is divided into a first accommodating chamber and a second accommodating chamber by the supporting rib plate;

2. The battery pack of claim 1, wherein the mounting bracket comprises a frame bolted to the housing.

3. The battery pack according to claim 2, wherein a positioning boss is arranged around an inner wall of the first accommodating chamber, and the positioning boss and the support rib plate form a support structure for supporting the frame body;

4. The battery pack of claim 2, wherein the frame has transverse ribs and longitudinal ribs disposed therein that are perpendicular to each other.

5. The battery pack of claim 4, wherein a supporting vertical plate is disposed at the bottom of the first accommodating chamber, and the supporting vertical plate supports against the longitudinal reinforcing rib.

6. The battery pack according to claim 1, wherein the module unit located at the upper layer is bolted to the fixing bracket.

7. The battery pack according to claim 1, wherein the interval between the module unit and the inner wall of the case is 8-12 mm.

8. The battery pack according to claim 1, wherein the gap between the fixing bracket and the module unit located at the next layer is not less than 2mm.

9. The battery pack according to claim 1, wherein the general control unit comprises an electrical box and a main control assembly, and the electrical box and the main control assembly are respectively fixed on the inner wall of the second accommodating chamber;

10. An electrically powered device comprising the battery pack of any one of claims 1-9.