CN219163493U - Battery module - Google Patents

Abstract

The utility model relates to the field of new energy sources, and discloses a battery module. The battery module includes: a plurality of electrical cores and at least one heat exchange component; the heat exchange component is clamped between two adjacent electric cores; the battery cell comprises a battery cell main body and lugs arranged at one end or two ends of the battery cell main body, the heat exchange component comprises a heat exchange main body and current collectors arranged at one end or two ends of the heat exchange main body, and the current collectors are used for collecting heat exchange media in the heat exchange main body; wherein, the tab and the current collector are relatively arranged. The heat exchange component of the battery module is clamped between two adjacent battery cells, so that the battery cells can be directly cooled, and the cooling effect of the whole battery module is better. The current collector of the heat exchange component is arranged opposite to the lug, so that the current collector can be used for exchanging heat to the lug, and the temperature at the lug is prevented from being too high.

Description

Battery module

Technical Field

The utility model relates to the technical field of new energy, in particular to a battery module.

Background

Along with the rapid development of new energy vehicles, in order to obtain the cruising ability of improving new energy vehicles, the designer gradually increases the energy density of the battery pack, and the improvement of the energy density can lead to the more compact internal structure of the battery pack, and meanwhile, the battery pack can generate a large amount of heat in the use process, especially when the battery pack is rapidly charged at a high rate, the battery pack can generate a large amount of heat, and if the heat cannot be timely dissipated but accumulated in the battery pack, the heat is extremely easy to be out of control, so that the battery is in fire explosion and other risks. Therefore, how to perform effective heat exchange on the battery pack is a relatively important research topic.

The heat exchange mode of the battery pack comprises air cooling and liquid cooling. In the existing liquid cooling mode, a complete heat exchange plate is usually arranged inside a battery pack, and heat exchange is performed on a complete module consisting of a plurality of battery modules, and the complete heat exchange plate is usually arranged at the bottom of the complete module.

However, this heat exchange method does not provide a good cooling effect for cooling the central position of the battery module or for overheating the individual battery modules.

Disclosure of Invention

The utility model aims to overcome the defect of poor cooling effect of a battery pack in the prior art and provides a battery module.

The utility model solves the technical problems by the following technical scheme:

a battery module, comprising: a plurality of electrical cores and at least one heat exchange component;

the heat exchange component is clamped between two adjacent electric cores;

the battery cell comprises a battery cell main body and lugs arranged at one end or two ends of the battery cell main body, the heat exchange component comprises a heat exchange main body and current collectors arranged at one end or two ends of the heat exchange main body, and the current collectors are used for collecting heat exchange media in the heat exchange main body;

wherein, the tab and the current collector are relatively arranged.

In this scheme, the collector of heat transfer part sets up with the utmost point ear relatively to can utilize the collector to carry out the heat transfer to the utmost point ear, prevent that the temperature of utmost point ear department from being too high.

Preferably, the side surface of the current collector, which is far away from the heat exchange body, is a first side surface, the central part of the first side surface in the extending direction of the current collector is recessed towards the heat exchange body, and the position of the tab corresponds to the position of the central part.

In the scheme, the positions of the lugs correspond to the positions of the central parts of the depressions of the current collector, so that the lugs can be conveniently welded with each other through the depressions of the central parts.

Preferably, the battery module further includes a conductive sheet connected to the tab, the conductive sheet being used for electrical connection between adjacent tabs.

In this scheme, can utilize the conducting strip of connection utmost point ear to weld to carry out the series-parallel connection with a plurality of electric cores, like this, can avoid damaging the utmost point ear.

Preferably, the battery module includes a plurality of the heat exchange members, and the plurality of the heat exchange members communicate with each other.

In this scheme, set up a plurality of heat transfer parts, battery module's overall heat transfer effect is better.

Preferably, the battery module includes a plurality of the heat exchange members, the plurality of heat exchange members being communicated with each other through a connection pipe, the connection pipe being connected to the current collector.

Preferably, the current collector is formed in a 'concave' shape structure, the current collector includes two protrusions at both sides and a recess between the two protrusions, and the connection pipe is connected to the protrusions.

In this scheme, the connecting pipe is connected in the bigger bulge of capacity, makes things convenient for inflow and outflow of the heat transfer medium in the heat transfer main part.

Preferably, adjacent current collectors are connected by one connecting pipe, and in the arrangement direction of the current collectors, two adjacent connecting pipes are staggered to be connected to different protruding parts of the same current collector.

In this scheme, through the staggered arrangement of connecting pipe, can make the circulation of heat transfer medium of heat transfer main part more smooth.

Preferably, a cavity is provided in the heat exchange member, the cavity being for accommodating a heat exchange medium.

In this scheme, the heat exchange member wholly accommodates the heat exchange medium, and thus, the area for heat exchange is larger.

Preferably, the heat exchange member is provided therein with a flow passage for accommodating a heat exchange medium.

Preferably, the heat exchange component comprises a heat exchange main body and current collectors arranged at two ends of the heat exchange main body, wherein the current collectors are used for collecting heat exchange media in the heat exchange main body;

the heat exchange device comprises a heat exchange main body, wherein one end of the heat exchange main body is provided with a heat exchange medium inlet, the other end of the heat exchange main body is provided with a heat exchange medium outlet, and both the heat exchange medium inlet and the heat exchange medium outlet are led to the current collector.

In the scheme, the heat exchange medium can flow through the whole surface of the heat exchange main body, thereby improving the cooling effect

Preferably, the battery module includes a plurality of the heat exchange members, and the plurality of the heat exchange members communicate with each other.

In this scheme, set up a plurality of heat transfer parts, battery module's overall heat transfer effect is better.

The utility model has the positive progress effects that:

the heat exchange component of the battery module is clamped between two adjacent electric cores, so that the electric cores can be directly cooled, the cooling effect of the whole battery module is better, and the current collector of the heat exchange component is opposite to the electrode lugs, so that the current collector can be used for exchanging heat to the electrode lugs, and the temperature at the electrode lugs is prevented from being too high.

Drawings

Fig. 1 is a schematic perspective view of a battery module according to a preferred embodiment of the present utility model.

Fig. 2 is an exploded structural view of a battery module according to a preferred embodiment of the present utility model.

Fig. 3 is a schematic perspective view of a plurality of battery cells according to a preferred embodiment of the present utility model.

Fig. 4 is a schematic perspective view of a plurality of heat exchange members according to a preferred embodiment of the present utility model.

Fig. 5 is a schematic perspective view of an end portion of an aggregate of a plurality of cells and heat exchange members according to a preferred embodiment of the present utility model.

Fig. 6 is a schematic perspective view of a single heat exchange member according to a preferred embodiment of the present utility model.

Fig. 7 is a schematic perspective view of a current collector according to a preferred embodiment of the present utility model.

Reference numerals illustrate:

battery module 100

Housing 110

Plug-in port 111

Cell 120

Cell body 121

Tab 122

Conductive sheet 130

Heat exchange member 140

Heat exchange body 141

First side surface 142

Current collector 143

Projection 1431

Recess 1432

Connecting pipe 150

Detailed Description

The utility model will be further illustrated by way of example with reference to the accompanying drawings, without thereby limiting the scope of the utility model to the examples.

As shown in fig. 1 to 7, the battery module 100 includes: a housing 110, a plurality of electrical cells 120, and a heat exchange member 140.

Both the battery cell 120 and the heat exchange member 140 are disposed within the housing 110. The heat exchange member 140 is sandwiched between two adjacent cells 120. The heat exchange component 140 of the battery module 100 is sandwiched between two adjacent battery cells 120, so that the battery cells 120 can be directly cooled, and the cooling effect on the whole battery module 100 is better.

In the present embodiment, a plurality of heat exchange members 140 are disposed in the battery module 100, and one heat exchange member 140 is disposed between adjacent cells 120. However, the present utility model is not limited thereto, and in other embodiments, if the cooling requirement is not high, one heat exchanging member 140 may be disposed at every third or more cells 120. Alternatively, in the case where the number of the battery cells 120 is not high, only one heat exchange member 140 may be provided.

The battery cell 120 includes a battery cell body 121 and tabs 122 disposed at both ends of the battery cell body 121. The tab 122 is used to connect with each other or a busbar (not shown) by welding or the like, so as to realize serial connection or parallel connection between the plurality of battery cells 120. Alternatively, the tab 122 may be disposed at only one end of the cell 120.

The battery module 100 further includes a conductive tab 130, the conductive tab 130 being connected to the tab 122 by welding or the like, the conductive tab 130 being used for electrical connection between adjacent tabs 122. The conductive sheet 130 connected to the tab 122 may be used for welding, so that the plurality of battery cells 120 may be connected in series and parallel, and thus, damage to the tab 122 may be avoided. The conductive sheet 130 may be a copper sheet or the like. In other embodiments, the conductive sheet 130 may also be omitted.

The present embodiment illustrates only one shape and structure of the tab 122 and the conductive sheet 130, but it should be understood that one skilled in the art may set the shape and structure of the tab 122 and the conductive sheet 130 as desired.

The heat exchange member 140 includes a heat exchange body 141 and current collectors 143 provided at both ends of the heat exchange body 141 and the heat exchange body 141.

In the present embodiment, the heat exchange body 141 has a flat structure. The heat exchange body 141 has a flat structure, and can be more conveniently attached to the battery cell 120 to improve the cooling area, thereby improving the cooling effect of the battery module 100 and avoiding the excessive thickness of the battery module 100. And the size and shape of the heat exchange body 141 are approximately the same as the shape of the battery cell 120 for heat exchange. In this way, the heat exchange body 141 may contact the entire side of the battery cell 120, thereby achieving a better cooling effect.

In the present embodiment, the plurality of electric cells 120 are stacked in two parts in the length direction of the heat exchange body 141, and one heat exchange member 140 exchanges heat with four electric cells 120 on the two parts at the same time.

In other embodiments, the plurality of cells 120 may be stacked in one portion or three or more portions only in the length direction of the heat exchange body 141, so that one heat exchange member 140 may exchange heat to the plurality of cells 120 on one or three or more portions at the same time.

The heat exchange body 141 has a heat exchange medium disposed therein for circulating and carrying heat from the battery cell 120. The heat exchange medium may be made of materials commonly used in the prior art, and will not be described herein. It should be appreciated that in this embodiment, the battery module only has a cooling requirement, and therefore, the heat exchange member 140 plays a role of cooling. If the battery module has a temperature raising requirement, the heat exchange medium or the heat exchange component 140 can also be used as a heat exchange medium to raise the temperature of the battery module.

Only one cavity may be provided in the heat exchange body 141 to accommodate the heat exchange medium. An S-shaped or U-shaped flow passage may be formed in the heat exchange body 141 for the heat exchange medium to flow therethrough. The flow channels are preferably more densely arranged within the heat exchange body 141 to provide a larger area of contact.

The current collector 143 serves for collection of heat exchange medium within the heat exchange body 141. The current collector 143 and the tab 122 are disposed opposite to each other. Therefore, the collector 143 can be utilized to exchange heat to the tab 122, and the temperature at the tab 122 is prevented from being too high. When the tabs 122 are respectively disposed at one or both ends of the cell body 121, the current collectors 143 are preferably disposed at one or both ends of the cell body 121 correspondingly, so as to facilitate heat exchange with the tabs 122.

The heat exchange body 141 is provided with a heat exchange medium inlet and outlet. Only one heat exchange medium inlet and only one heat exchange medium outlet may be provided per heat exchange body 141. When the current collector 143 is provided at only one end of the heat exchange body 141, the heat exchange medium inlet and the heat exchange medium outlet are provided at the same end of the heat exchange body 141 and open to the current collector 143. At this time, it is preferable to form an S-shaped or U-shaped flow passage in the heat exchange body 141 so that the heat exchange medium may flow through the entire surface of the heat exchange body 141, thereby improving the cooling effect. This structure can avoid providing the current collector 143 at both ends of the heat exchange member 140, and conveniently reduce the overall length of the heat exchange member 140. When the current collector 143 is disposed at both ends of the heat exchange body 141, at least one heat exchange medium inlet or outlet is disposed at one end of the heat exchange body 141, so that the heat exchange medium can be collected in the current collector 143. Preferably, a heat exchange medium inlet is provided at one end of the heat exchange body 141, and a heat exchange medium outlet is provided at the other end of the heat exchange body 141, so that the heat exchange medium can flow through the entire surface of the heat exchange body 141, thereby improving the cooling effect.

The thickness of the heat exchange body 141 is smaller than that of the current collector 143, so that the heat exchange medium in the heat exchange body 141 is collected therein, and meanwhile, the cooling effect of the current collector 143 is better, which is more beneficial to the cooling of the tab 122.

Referring to fig. 7, a side of the current collector 143 away from the heat exchange body 141 is a first side 142, a central portion of the first side 142 in the extending direction of the current collector 143 is recessed toward the heat exchange body 141, and a position of the tab 122 corresponds to a position of the central portion. The position of the tab 122 corresponds to the position of the depressed center portion of the current collector 143, so that the mutual welding of the tab 122 can be facilitated by the depressed center portion.

In the present embodiment, the battery module 100 includes a plurality of heat exchange members 140, and the plurality of heat exchange members 140 communicate with each other. A plurality of heat exchange members 140 are provided, and the overall heat exchange effect of the battery module 100 is better.

The plurality of heat exchange members 140 communicate with each other through a connection pipe 150, and the connection pipe 150 is connected to the current collector 143.

The current collector 143 is formed in a "concave" shape structure, the current collector 143 includes two protrusions 1431 at both sides and a recess 1432 (central portion) between the two protrusions 1431, and the connection pipe 150 is connected to the protrusions 1431.

The connection pipe 150 is connected to the larger capacity protrusion 1431 to facilitate inflow and outflow of the heat exchange medium in the heat exchange body 141.

Adjacent current collectors 143 are connected by one connection pipe 150, and in the arrangement direction of the plurality of current collectors 143, two adjacent connection pipes 150 are staggered to be connected to different protrusions 1431 of the same current collector 143. By the staggered arrangement of the connection pipes 150, the circulation of the heat exchange medium of the heat exchange body 141 can be made smoother, avoiding that the heat exchange medium does not flow through the heat exchange body 141, but flows in from one connection pipe 150 and directly flows out from the other connection pipe 150.

Alternatively, adjacent current collectors 143 may be connected by a plurality of connection pipes 150.

The case 110 of the battery module 100 is provided with an insertion port 111 corresponding to the connection pipe 150 on the outermost heat exchange member 140 so that the connection pipe 150 is protruded or connected with a pipe line outside the case 110. The heat exchange members 140 of the plurality of battery modules 100 may be connected in series with each other or may be connected in parallel to a bus.

The circulation flow of the heat exchange medium in the heat exchange member 140 may be achieved by an external circulation mechanism (not shown), such as a circulation pump, in which case it is only necessary to provide a liquid port connected to the connection pipe 150 on the case 110 of the battery module 100 to introduce and withdraw the heat exchange medium. The circulation may also be accomplished by a circulation mechanism, such as a circulation pump, provided inside the battery module 100, i.e., the circulation is accomplished inside the battery module 100.

The pipe arrangement inside the battery module 100 may be set as needed, and will not be described here again.

Components such as a temperature control unit, a voltage stabilizing unit, etc. may also be provided inside the battery module 100 as needed, which is well known in the art and will not be described herein.

When the battery module 100 works normally, namely high-power supply is performed, or when the temperature in the battery module 100 exceeds a normal value, the heat exchange medium in the heat exchange component 140 circularly flows to take away the heat on the surface of the battery cell 120 and flows to the heat exchange mechanism to realize the cooling of the heat exchange medium, and then flows to the heat exchange component 140 again to cool the battery cell 120, so that the heat exchange component is circularly reciprocated.

In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the utility model, but such changes and modifications fall within the scope of the utility model.

Claims (10)

1. A battery module, comprising:

at least two electric cores and at least one heat exchange component;

the heat exchange component is clamped between two adjacent electric cores;

the battery cell comprises a battery cell main body and lugs arranged at one end or two ends of the battery cell main body, the heat exchange component comprises a heat exchange main body and current collectors arranged at one end or two ends of the heat exchange main body, and the current collectors are used for collecting heat exchange media in the heat exchange main body;

wherein, the tab and the current collector are relatively arranged.

2. The battery module according to claim 1, wherein a side of the current collector away from the heat exchange body is a first side, a central portion of the first side in an extending direction of the current collector is recessed toward the heat exchange body, and a position of the tab corresponds to a position of the central portion.

3. The battery module of claim 2, further comprising a conductive tab connected to the tab, the conductive tab for electrical connection between adjacent tabs, the conductive tab positioned to correspond to the position of the central portion.

4. The battery module according to claim 1, wherein the battery module includes a plurality of the heat exchange members, the plurality of heat exchange members being in communication with each other through a connection pipe, the connection pipe being connected to the current collector.

5. The battery module of claim 4, wherein the current collector is formed in a "concave" shape structure, the current collector includes two protrusions at both sides and a recess between the two protrusions, and the connection pipe is connected to the protrusions.

6. The battery module according to claim 5, wherein adjacent ones of the current collectors are connected by one connecting pipe, and adjacent two of the connecting pipes are staggered in the arrangement direction of the current collectors so as to be connected to different ones of the protrusions of the same current collector.

7. The battery module of claim 1, wherein a cavity or flow channel is provided in the heat exchange member to accommodate a heat exchange medium.

8. The battery module according to claim 7, wherein the heat exchange member includes a heat exchange body and a current collector provided at one or both ends of the heat exchange body for collection of heat exchange medium in the heat exchange body;

the same end of the heat exchange main body is provided with a heat exchange medium inlet and a heat exchange medium outlet which lead to the current collector.

9. The battery module according to claim 7, wherein the heat exchange member includes a heat exchange body and current collectors provided at both ends of the heat exchange body for collection of heat exchange medium in the heat exchange body;

the heat exchange device comprises a heat exchange main body, wherein one end of the heat exchange main body is provided with a heat exchange medium inlet, the other end of the heat exchange main body is provided with a heat exchange medium outlet, and both the heat exchange medium inlet and the heat exchange medium outlet are led to the current collector.

10. The battery module of claim 1, wherein the battery module comprises a plurality of heat exchange members, the plurality of heat exchange members being in communication with one another.

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