CN209000990U

CN209000990U - A kind of battery modules and battery pack

Info

Publication number: CN209000990U
Application number: CN201821973133.7U
Authority: CN
Inventors: 刘少松; 钱济斌
Original assignee: Microvast Power Systems Huzhou Co Ltd
Current assignee: Microvast Power Systems Huzhou Co Ltd
Priority date: 2018-11-28
Filing date: 2018-11-28
Publication date: 2019-06-18
Anticipated expiration: 2028-11-28

Abstract

The utility model provides a kind of battery modules, including battery pile, coldplate and heat transfer unit (HTU)；Wherein, battery core stacking direction is the direction C, between the center in the direction battery pile C and any end in the direction battery pile C, with the reduction of each heat transfer unit (HTU) distance between the center on the direction C, thermal resistance of each heat transfer unit (HTU) between battery pile and coldplate is gradually reduced.The utility model also provides a kind of battery pack comprising the battery modules.The utility model solves the problems, such as that temperature is unbalanced between each battery core of module internal in cooling procedure.

Description

A kind of battery modules and battery pack

Technical field

The utility model relates to a kind of battery modules and battery packs.

Background technique

Secondary cell can generate heat in charge and discharge process, increase battery modules temperature, be located among battery modules The battery of position is easy to appear heat concentration effect since radiating condition is poor, leads to the temperature of the battery in mould group middle position Higher than the temperature of the battery of mould group end positions, make in mould group between different batteries that there are the biggish temperature difference.Same battery system Interior different batteries work long hours will affect battery with two side terminals at different temperatures, and then reduce the use longevity of battery system Life.

Utility model content

The utility model provides a kind of battery modules, comprising: battery pile, coldplate made of being stacked as soft pack cell and biography Thermal, heat transfer unit (HTU) is between battery pile and coldplate and is arranged between the flanging of adjacent battery core；The single heat transfer Device includes heat-conducting glue and heat-conducting block, and heat-conducting glue is at least a part of to be filled between heat-conducting block and battery pile；

Wherein, battery core stacking direction is the direction C, the center in the direction battery pile C and any end in the direction battery pile C Between, with the reduction of each heat transfer unit (HTU) distance between the center on the direction C, each heat transfer unit (HTU) is in battery pile and cooling Thermal resistance between plate is gradually reduced.

Heat transfer unit (HTU) is by heat by battery pile Directed cooling plate.

The soft pack cell is stacked along battery core thickness direction, and the direction C is identical as battery core thickness direction.Heat-conducting glue is fitted in phase The surface in region is formed by between the flanging of adjacent battery core, and heat-conducting glue is bonded with the surface of heat-conducting block；I.e. heat-conducting glue respectively with Battery pile and heat-conducting block form face contact, are conducive to increase contact area, and then be conducive to the transmitting of heat.

With the reduction of each heat transfer unit (HTU) distance between the center on the direction C, each heat transfer unit (HTU) in battery pile and Thermal resistance between coldplate is gradually reduced, and the heating conduction of each heat transfer unit (HTU) gradually increases, and then makes each battery in battery pile Temperature tends to be balanced in cooling procedure.

In a kind of embodiment of the utility model, the shape of the cross section at single heat transfer unit (HTU) different location and face Product is identical or essentially identical；The shape of respective cross section and area are identical or essentially identical between each heat transfer unit (HTU).

In a kind of embodiment of the utility model, adjacent battery core directly contacts on the direction C, any battery core with The heat-conducting glue of heat transfer unit (HTU) directly contacts.

Module internal directly contacts between adjacent battery core, eliminates thermally conductive aluminium flake, simplify modular structure, improve mould The volume energy density of group.

In a kind of embodiment of the utility model, the flanging of two neighboring battery core is bent in the opposite direction, heat transfer The flanging of the battery core of device two sides is bent to the direction mutually deviated from.

In a kind of embodiment of the utility model, the length of each heat transfer unit (HTU) is identical, the thermal conductivity of the heat-conducting block Greater than the thermal conductivity of heat-conducting glue；With the reduction of each heat transfer unit (HTU) distance between the center on the direction C, each heat transfer dress The volume for the heat-conducting block set is gradually increased.

Due to the width between the flanging for the adjacent battery core for being provided with heat transfer unit (HTU) in battery pile with depth identical or base This is identical, and the length of each heat transfer unit (HTU) is identical, it is meant that the volume of each heat transfer unit (HTU) is identical or essentially identical.

Since the thermal conductivity of heat-conducting block is greater than the thermal conductivity of heat-conducting glue, the increase of heat-conducting block volume is so that corresponding heat transfer unit (HTU) Thermal resistance between battery pile and coldplate reduces.

In a kind of embodiment of the utility model, the heat transfer unit (HTU) is filled between the flanging of adjacent battery core, is passed The length of thermal and the length of flanging are identical.

In a kind of embodiment of the utility model, the heat-conducting block is metal heat-conducting block.

In a kind of embodiment of the utility model, with each heat transfer unit (HTU) on the direction C between the center The length of the reduction of distance, each heat transfer unit (HTU) is gradually increased.

The length of each heat transfer unit (HTU) is gradually increased, so that thermal resistance of the heat transfer unit (HTU) between battery pile and coldplate gradually subtracts It is small.

In a kind of embodiment of the utility model, the volume of the heat-conducting block of each heat transfer unit (HTU) is identical, fills with each heat transfer The reduction of the distance between the center on the direction C is set, the volume of the heat-conducting glue of each heat transfer unit (HTU) is gradually increased.

In a kind of embodiment of the utility model, thermal conductive silicon rubber mat is provided between the heat-conducting block and coldplate.

In a kind of embodiment of the utility model, the heat-conducting glue is wrapped in the surface of heat-conducting block, heat-conducting glue difference It is directly contacted with battery pile and coldplate.

Heat-conducting glue is directly contacted with battery pile and coldplate respectively, can simplify modular structure.

In a kind of embodiment of the utility model, the coldplate include inlet, liquid outlet and be located in the liquid inlet, Cooling passage between liquid outlet.

The utility model further relates to a kind of battery pack, including the battery modules.

The utility model has the beneficial effects that heat transfer unit (HTU) of the utility model by the different thermal resistances of setting, can reduce same The temperature difference in one mould group between different battery cores makes the temperature between different battery cores tend to be balanced during cooling；In addition, this The heat transfer unit (HTU) of utility model is set up directly between the flanging of battery core, reduces the occupancy to space, battery modules can be improved Volume energy density, the utility model eliminates the structure of thermally conductive aluminium flake, further improves the volume energy of battery modules Density.

Detailed description of the invention

Fig. 1 is the battery module structure schematic diagram of embodiment 1；

Fig. 2 is D enlarged schematic partial view in Fig. 1；

Fig. 3 is the structural schematic diagram of heat transfer unit (HTU) and thermal conductive silicon rubber mat；

Fig. 4 is heat transfer unit (HTU) schematic cross-sectional view；

Fig. 5 is the battery module structure schematic diagram of embodiment 2；

Fig. 6 is the heat transfer unit (HTU) schematic cross-sectional view of embodiment 2；

Fig. 7 is the battery module structure schematic diagram of embodiment 3；

Fig. 8 is the heat transfer unit (HTU) schematic cross-sectional view of embodiment 3；

Fig. 9 is the heat transfer unit (HTU) of embodiment 3 and the structural schematic diagram of thermal conductive silicon rubber mat.

Description of symbols:

1: battery pile, the face 2:A, 3: flanging, 4: region B, 5: heat transfer unit (HTU), 51: heat-conducting glue, 52: heat-conducting block, 6: cooling Plate, 7: thermal conductive silicon rubber mat.

Specific embodiment

The utility model is described in detail in specific embodiment below, however the utility model is not restricted to Following embodiment.

Embodiment 1:

As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the present embodiment provides a kind of battery modules, comprising:

Battery pile 1 is stacked as soft pack cell along direction shown in Y-axis, and adjacent battery core is straight on the direction shown in Y-axis Contact, battery pile 1 include two faces A 2 being oppositely arranged, and the flanging 3 of each battery core is located on the face A 2, the folding of two neighboring battery core Side 3 is bent in the opposite direction；Wherein, there are the flangings 3 of two neighboring battery core to the direction bending mutually deviated from, at this two The region B 4 extended along battery core length direction (i.e. direction shown in X-axis in Fig. 1) is formed between the flanging 3 of battery core.

At least side of battery pile 1 is arranged in coldplate 6, at least one coldplate 6 and the single face A 2 are located at battery pile 1 it is ipsilateral；The coldplate 6 includes inlet, liquid outlet and is located in the liquid inlet, the cooling passage between liquid outlet.

Heat transfer unit (HTU) 5, be arranged between the face A 2 and coldplate 6 and be located at region B 4 in, heat transfer unit (HTU) 5 by heat by 1 Directed cooling plate 6 of battery pile；The single heat transfer unit (HTU) 5 includes heat-conducting glue 51 and heat-conducting block 52, and heat-conducting glue 51 at least one Divide and be filled between heat-conducting block 52 and region B 4, any battery core is directly contacted with the heat-conducting glue 51 of heat transfer unit (HTU) 5；It is described to lead Thermal conductive silicon rubber mat 7 is provided between heat block 52 and coldplate 6.The side of heat transfer unit (HTU) 5 is direct by heat-conducting glue 51 and battery pile 1 Contact, the opposite other side is directly contacted with thermal conductive silicon rubber mat 7.

Wherein, battery core stacking direction be the direction C (direction shown in Y-axis as shown in figure 1), the center in the direction battery pile C with Between any end in the direction battery pile 1C, with the reduction of each distance between the center on the direction C of heat transfer unit (HTU) 5, Thermal resistance of each heat transfer unit (HTU) 5 between battery pile 1 and coldplate 6 is gradually reduced.

Specifically, the heat-conducting glue 51 is filled in region B 4, the length of heat-conducting glue 51 and the length of flanging are identical；Institute The thermal conductivity for stating heat-conducting block 52 is greater than the thermal conductivity of heat-conducting glue 51；The heat-conducting block 52 is metal heat-conducting block.With each heat transfer unit (HTU) 5 On the direction C between the center distance reduction, the volume of the heat-conducting block 52 of each heat transfer unit (HTU) 5 is gradually increased.

Embodiment 2:

As shown in Figure 5, Figure 6, the present embodiment the difference from embodiment 1 is that: the heat-conducting glue 51 is wrapped in heat-conducting block 52 Surface, the side of heat transfer unit (HTU) 5 directly contacted by heat-conducting glue 51 with battery pile 1, and the opposite other side passes through heat-conducting glue 51 It is directly contacted with coldplate 6, it may be assumed that heat-conducting glue 51 is directly contacted with the face A 2 and coldplate 6 respectively.

Embodiment 3:

As shown in Figure 7, Figure 8 and Figure 9, the present embodiment the difference from embodiment 1 is that: with each heat transfer unit (HTU) 5 on the direction C The length of the reduction of distance between the center, each heat transfer unit (HTU) 5 is gradually increased；The heat-conducting block 52 of each heat transfer unit (HTU) 5 Volume it is identical, with the reduction of each distance between the center on the direction C of heat transfer unit (HTU) 5, each heat transfer unit (HTU) 5 is led The volume of hot glue 51 is gradually increased.

The above, only some specific embodiments of the utility model, but the protection scope of the utility model is not It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, can be readily apparent that Change or replacement, should be covered within the scope of the utility model.The protection scope of the utility model is wanted with right It asks subject to the protection scope of book.

Claims

1. a kind of battery modules characterized by comprising battery pile, coldplate made of being stacked as soft pack cell and heat transfer dress It sets, heat transfer unit (HTU) is between battery pile and coldplate and is arranged between the flanging of adjacent battery core；The single heat transfer unit (HTU) Including heat-conducting glue and heat-conducting block, heat-conducting glue is at least a part of to be filled between heat-conducting block and battery pile；

Wherein, battery core stacking direction is the direction C, any end in the center in the direction battery pile C and the direction battery pile C it Between, with the reduction of each heat transfer unit (HTU) distance between the center on the direction C, each heat transfer unit (HTU) is in battery pile and coldplate Between thermal resistance be gradually reduced.

2. a kind of battery modules as described in claim 1, it is characterised in that: adjacent battery core directly contacts on the direction C, appoints One battery core is directly contacted with the heat-conducting glue of heat transfer unit (HTU).

3. a kind of battery modules as described in claim 1, it is characterised in that: the length of each heat transfer unit (HTU) is identical, described thermally conductive The thermal conductivity of block is greater than the thermal conductivity of heat-conducting glue；With each heat transfer unit (HTU), the distance between the center subtracts on the direction C Small, the volume of the heat-conducting block of each heat transfer unit (HTU) is gradually increased.

4. a kind of battery modules as claimed in claim 3, it is characterised in that: the heat transfer unit (HTU) is filled in the folding of adjacent battery core Between side, the length of heat transfer unit (HTU) and the length of flanging are identical.

5. a kind of battery modules as described in claim 1, it is characterised in that: with each heat transfer unit (HTU) on the direction C with it is described in The reduction of distance between heart position, the length of each heat transfer unit (HTU) are gradually increased.

6. a kind of battery modules as claimed in claim 5, it is characterised in that: the volume of the heat-conducting block of each heat transfer unit (HTU) is identical, With the reduction of each heat transfer unit (HTU) distance between the center on the direction C, the volume of the heat-conducting glue of each heat transfer unit (HTU) by It is cumulative big.

7. a kind of battery modules as described in claim 1, it is characterised in that: the heat-conducting block is metal heat-conducting block.

8. a kind of battery modules as described in claim 1, it is characterised in that: be provided with and lead between the heat-conducting block and coldplate Hot silicagel pad.

9. a kind of battery modules as described in claim 1, it is characterised in that: the heat-conducting glue is wrapped in the surface of heat-conducting block, Heat-conducting glue is directly contacted with battery pile and coldplate respectively.

10. a kind of battery pack, it is characterised in that: including any battery modules of claim 1-9.