CN219163522U

CN219163522U - Battery cell module and battery pack

Info

Publication number: CN219163522U
Application number: CN202223499492.2U
Authority: CN
Inventors: 赵向阳; 王永; 赵亮
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2022-12-26
Filing date: 2022-12-26
Publication date: 2023-06-09
Anticipated expiration: 2032-12-26

Abstract

The utility model relates to a battery cell module and a battery pack, wherein the battery cell module comprises: the battery cell and the heat insulation part; the battery cores are stacked in sequence; the heat insulation parts are multiple; each heat insulation part is arranged between adjacent sides of every two adjacent battery cells; the heat insulation part is provided with a channel, the channel is communicated with a containing groove arranged above the battery cell module, the containing groove is arranged above the battery cell module, when water flows to the containing groove, the water flows to the containing groove, when the water flows to a certain amount in the containing groove, the water flows into the channel of the inner cavity of the heat insulation part, and the heat spreading of the heat-out battery cell to the adjacent battery cell is blocked, so that the heat-out is blocked.

Description

Battery cell module and battery pack

Technical Field

The utility model relates to the technical field of power battery spare and accessory parts, in particular to a battery cell module and a battery pack.

Background

At present, the problem of thermal runaway of new energy vehicles in the market frequently occurs, and once the single cell of the battery pack is thermally out of control, the whole cell module, the whole battery pack and the whole vehicle can burn.

However, the current cell module has the problem that the cell cannot be blocked after thermal runaway, and the thermal runaway continuously spreads.

Disclosure of Invention

The utility model provides a battery cell module and a battery pack, which are used for solving the problems that the thermal runaway of a battery cell cannot be blocked and the thermal runaway continuously spreads after the thermal runaway of the battery cell exists in the traditional battery cell module.

The utility model provides a battery cell module for realizing the purpose, which comprises: the battery cell and the heat insulation part; the battery cores are stacked in sequence; the heat insulation parts are multiple; each heat insulation part is arranged between adjacent sides of every two adjacent battery cells; each heat insulation part is provided with a channel which is communicated with a containing groove arranged above the battery cell module.

In some embodiments, the heat insulation part is provided with a plurality of openings, one sides of the plurality of openings are communicated with the accommodating groove, and the other sides of the plurality of openings are communicated with the channel.

In some of these embodiments, each insulation is provided as an insulated grid comprising a plurality of first grids and a plurality of second grids in communication with each other.

In some embodiments, each first grid is disposed across each second grid to form a channel.

In some embodiments, the insulation is comb-shaped.

In some of these embodiments, the cell module further comprises: end plate, curb plate, upper cover and sampling board, the end plate sets up the left and right sides at the electric core module, and the curb plate sets up the front and back both sides at the electric core module, and the upper cover sets up the top at electric core module, and sampling board subassembly fixed connection is in the upper cover, and the both sides block of sampling board subassembly is connected in the curb plate.

In some embodiments, the top end of the insulating portion is connected to the upper cover by a stiffener.

In some of these embodiments, the cell module further comprises: the spraying pipe is arranged at the top of the battery cell module, and two ends of the spraying pipe extend along the length direction of the battery cell module respectively; the spray pipe is provided with a plurality of hot melt pipe sections; each hot melt pipe section is arranged above one cell, and the adjacent sides of every two adjacent hot melt pipe sections are provided with protection rings.

In some embodiments, the top end of each insulation is higher than the top end of the cell.

A battery pack based on the same conception is provided with at least one battery cell module as described above on at least one side of the battery pack.

The utility model has the beneficial effects that:

(1) The heat insulation part is provided with a channel, the accommodating groove is arranged above the battery cell module, when water flows to the accommodating groove, the water flows to the accommodating groove, when the water flows in the accommodating groove to a certain amount, the water flows in the channel of the inner cavity of the heat insulation part, and the thermal runaway battery cell is blocked from spreading to the adjacent battery cell, so that the thermal runaway is blocked.

(2) The top of thermal-insulated portion is higher than the top of electric core, after the rivers in the shower flow out, owing to receive the blocking of the thermal-insulated portion of portion that exceeds, rivers can remain at the top of electric core to can not flow to elsewhere, strengthen the ability of putting out a fire to the water of thermal runaway electric core, can play the influence of isolated spun flame to adjacent electric core simultaneously.

Drawings

Figure 1 is a schematic diagram of some embodiments of a cell module according to the present utility model;

FIG. 2 is a schematic view of the shower pipe of the battery cell module shown in FIG. 1;

FIG. 3 is a schematic view illustrating the installation of a heat insulating portion of the battery cell module shown in FIG. 1;

FIG. 4 is a schematic view of the upper cover of the battery module shown in FIG. 1;

FIG. 5 is one of the schematic mounting views of the insulating grid of one of the cell modules shown in FIG. 1;

FIG. 6 is a schematic view of the thermal insulation grid of one of the cell modules shown in FIG. 5;

FIG. 7 is a second schematic view of the installation of a heat insulating grid of the battery cell module of FIG. 1;

fig. 8 is a schematic view of the thermal insulation grid of one of the cell modules shown in fig. 7.

In the drawings, 100, cell modules; 110. an end plate; 120. a side plate; 130. an upper cover; 140. a battery cell; 150. sampling plate; 200. a heat insulation part; 210. a thermal insulation grid; 211. a first grid; 212. a second grid; 213. an opening; 220. reinforcing ribs; 300. a shower pipe; 310. a hot melt pipe section; 320. a protective ring; 400. and a bus bar.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Examples of the embodiments are illustrated in the accompanying drawings, wherein like or similar symbols indicate like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "top," "bottom," "inner," "outer," "axis," "circumferential," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the present utility model or simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," "engaged," "hinged," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1-8, a cell module and a battery pack, the cell module 100 comprises: an end plate 110, side plates 120, an upper cover 130, and a sampling plate 150.

Wherein, end plate 110 of this application sets up the left and right sides at electric core module 100, and curb plate 120 sets up the front and back both sides at electric core module 100, and upper cover 130 sets up the top at electric core module 100, and sampling plate 150 subassembly fixed connection is in upper cover 130, and the both sides block of sampling plate 150 subassembly is connected in curb plate 120.

In some applications, the battery cell module 100 of the present application is formed by stacking a plurality of battery cells 140 in sequence, and each battery cell 140 is provided with an explosion-proof valve.

In other applications, a receiving slot is provided above the battery cell module 100 of the present application.

In some embodiments of the present utility model, during installation, the end plate 110 of the present application is pre-fixed by using a tool, a structural adhesive is disposed on one side of the battery cell 140, the side plate 120 and the end plate 110 are welded by laser or mechanically connected, so that the whole battery cell module 100 is fixed and formed, the side plate 120 is fixedly bonded with the battery cell 140 through the structural adhesive, the bus bar 400 is connected to the battery cell 140 by welding, the sampling plate 150 is fixedly connected to the upper cover 130 by bonding or riveting, the sampling plate 150 is connected to the side plate 120 by snap-fit, the upper cover 130 is provided with a through hole at a position corresponding to the top of each bus bar 400, the nickel sheet is located above the through hole, and is electrically connected with the copper bar by spot welding or laser welding, and the top is insulated and protected by the adhesive protection film.

In some of these applications, the side plate 120 of the present application is 5 mm higher than the top of the cell 140, but is not limited to 5 mm, and can be any value that slows the flow of water, and thus slows the flow of water.

In some embodiments of the present utility model, the heat insulation parts 200 are installed in the cell module 100, and the heat insulation parts 200 are plural, and each heat insulation part 200 is disposed between two adjacent cells 140 and is uniformly distributed along the length direction of the cell module 100.

In some embodiments of the present utility model, a channel is formed on each of the heat insulating parts 200 of the present application, and the channel communicates with the receiving groove.

In some embodiments of the present utility model, each insulation 200 of the present application is configured as an insulated grid 210, the insulated grid 210 including a first grid 211 and a second grid 212 in communication with each other.

In some of these applications, first grid 211 is disposed across second grid 212, forming a channel.

In other applications, the insulation 200 of the present application is comb-shaped.

The insulation grid 210 of the present application is configured as a mesh structure or a grid structure, but is not limited to the mesh structure and the grid structure, and may be any other structure that is in communication with each other.

Specifically, the heat insulation portion 200 of the present application is provided with a plurality of openings 213, one side of the plurality of openings 213 is connected to the accommodating groove, and the other side of the plurality of openings 213 is connected to the channel.

In some embodiments of the present utility model, the heat insulation grid 210 forms a channel after being assembled with the battery cell 140, the opening 213 is upward and is communicated with the channel, the accommodating groove is arranged above the battery cell module 100, the opening 213 is communicated with the bottom of the accommodating groove, that is, the channel is communicated with the bottom of the accommodating groove, when the flowing water flows to the position of the accommodating groove, the flowing water flows into the accommodating groove, flows through the opening 213 and flows into the channel, and the flowing water can flow into the channel through one or more openings 213 therein, so as to cool the battery cell 140 and block thermal runaway.

In some of these applications, the opening 213 of the present application is higher than the top of the cell 140, and the width and height of the opening 213 may be sufficient for water flow to pass through, but the flame cannot.

In some embodiments of the present utility model, the top end of each insulating portion 200 of the present application is higher than the top end of each cell 140.

In some applications, the top of the heat insulation part 200 is higher than the top of the battery cell 140 until the inner surface of the upper cover 130 is provided with the reinforcing rib 220, the reinforcing rib 220 can prevent the thermal runaway gas from blowing the heat insulation plate open or down, and further influence the adjacent battery cell 140, after the water flow in the water pipe flows out, the water flow can remain in the accommodating cavity of the battery cell 140 and cannot flow to other places due to the blocking of the heat insulation part 200 of the higher part, so that the water filling fire extinguishing capability of the thermal runaway battery cell 140 is enhanced, the thermal runaway battery cell 140 is blocked from spreading to the adjacent battery cell 140, the thermal runaway is blocked, and meanwhile, the influence of the isolated flame on the adjacent battery cell 140 can be played.

In some embodiments of the present utility model, each insulation 200 of the present application is a high temperature resistant insulation material.

In some of these applications, the insulation 200 of the present application is an aerogel or mica sheet, but is not limited to an aerogel or mica sheet, and can be any material that is resistant to high temperatures and insulations.

In some embodiments of the present utility model, a spray pipe 300 is installed on the top of the cell module 100, and the spray pipe 300 is used for performing fixed-point spray cooling on the cell module 100.

Specifically, the two ends of the shower pipe 300 are connected to an external water source, the shower pipe 300 is installed at the top end of the cell module 100, and the two ends respectively extend along the length direction of the cell module 100.

The shower pipe 300 of the present application is formed by sequentially connecting a plurality of hot melt pipe sections 310, and each of the plurality of hot melt pipe sections 310 is disposed above one electric core 140; a protective ring 320 is provided on adjacent sides of each adjacent two of the hot melt tube segments 310.

In some of these applications, the guard ring 320 of the present application is a high temperature resistant material.

The guard ring 320 of the present application is a ceramic structure, but is not limited to a ceramic structure, and may be made of any material that is resistant to high temperature and meets the requirements.

In some embodiments of the present utility model, each protection ring 320 of the present application is provided with a connection portion and fins, the connection portion is disposed through the hot-melt tube section 310, the fins are disposed on two sides of the connection portion, and the fins are connected to the reinforcing ribs 220 in a snap fit manner.

In some embodiments of the present utility model, when the shower pipe 300 is installed, the protection ring 320 is inserted into the fixing position of the hot melt pipe section 310 in advance, and when the shower pipe is installed, the fixing of the hot melt pipe section 310 is realized by inserting and fixing the fins on the protection ring 320 and the heat insulation board.

In some of these applications, the fins of the present application may secure the function of the thermal insulation 200, preventing hot gases from thermal runaway from blowing down the thermal insulation 200, thereby preventing flame from blowing to the weak point of the explosion proof valve of the adjacent cell 140.

In other applications, the two ends of the shower pipe 300 are provided with connectors, the connectors are connected with an external water source, the water flow in the shower pipe 300 has a certain pressure, the pressure of the water flow is realized by gravity or a pressure pump, and the water flow with a certain pressure after the thermal runaway cell 140 melts the hot melt pipe section 310 can be sprayed out from the melted position of the hot melt pipe section 310.

The utility model also provides a battery pack, one side of the battery pack is provided with at least one battery cell module 100, the battery cell module 100 is formed by stacking a plurality of battery cells 140 in sequence, the adjacent side of each two adjacent battery cells 140 is provided with a heat insulation part 200, a channel is arranged on the heat insulation part 200 of the application, a containing groove is arranged above the battery cell module 100, when water flows to the position of the containing groove, the water flows into the containing groove, and when the water flows in the containing groove to a certain amount, the water flows into the channel of the heat insulation part 200 to block the heat spreading of the heat-out battery cells 140 to the adjacent battery cells 140, thereby blocking the heat-out; meanwhile, the top end of the heat insulation part 200 is higher than the top end of the battery cell 140, after water flows out of the spray pipe 300, the water flows can remain at the top of the battery cell 140 and cannot flow to other places due to the blocking of the heat insulation part 200 at the higher part, so that the water filling and fire extinguishing capacity of the thermal runaway battery cell 140 is enhanced, and meanwhile, the influence of flame sprayed out to the adjacent battery cell 140 can be isolated.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "examples," "particular examples," "one particular embodiment," 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 terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The present utility model is not limited to the above preferred embodiments, and any person skilled in the art, within the scope of the present utility model, may apply to the present utility model, and equivalents and modifications thereof are intended to be included in the scope of the present utility model.

Claims

1. A battery cell module, comprising:

the battery cell and the heat insulation part;

the plurality of the battery cells are stacked in sequence;

the heat insulation parts are a plurality of; each heat insulation part is arranged between adjacent sides of every two adjacent battery cells;

each heat insulation part is provided with a channel which is communicated with a containing groove arranged above the battery cell module.

2. The battery cell module of claim 1, wherein the heat insulation part is provided with a plurality of openings, one sides of the plurality of openings are communicated with the accommodating groove, and the other sides of the plurality of openings are communicated with the channel.

3. The battery cell module of claim 1, wherein each of the thermal shields is configured as a thermal shield grid comprising a plurality of first grids and a plurality of second grids in communication with each other.

4. The battery cell module of claim 3, wherein each of the first grids is disposed across each of the second grids, forming the channel.

5. The battery cell module of claim 2, wherein the thermal insulation is comb-shaped.

6. The battery cell module of claim 1, further comprising: end plate, curb plate, upper cover and sampling board, the end plate sets up the left and right sides of electric core module, the curb plate sets up the front and back both sides of electric core module, the upper cover sets up the top of electric core module, sampling board subassembly fixed connection in the upper cover, just the both sides block of sampling board subassembly connect in the curb plate.

7. The battery cell module of claim 6, wherein the top end of the heat insulating part is connected to the upper cover through a reinforcing rib.

8. The battery cell module of any one of claims 1 to 5, further comprising: the spraying pipe is arranged at the top of the battery cell module, and two ends of the spraying pipe extend along the length direction of the battery cell module respectively; the spray pipe is provided with a plurality of hot melt pipe sections; each hot melt pipe section is arranged above one electric core, and a protection ring is arranged on the adjacent side of each two adjacent hot melt pipe sections.

9. The battery cell module of claim 8, wherein a top end of each of the thermal insulation portions is higher than a top end of the battery cell.

10. A battery pack, characterized in that at least one side of the battery pack is provided with at least one cell module according to claims 1 to 9.