CN220527020U - Battery module, battery module and battery pack - Google Patents

Abstract

The utility model belongs to the technical field of battery thermal management, and particularly relates to a battery module, a battery module and a battery pack; a battery module, comprising: the heat dissipation shell is provided with a water inlet and a water outlet; the battery cell is arranged in the heat dissipation shell; the surface of the heat dissipation shell is provided with a plurality of concave pressing table structures which are abutted against the surface of the battery cell, a flow channel cavity is formed between the battery cell and the heat dissipation shell, and the water inlet and the water outlet are respectively communicated with the flow channel cavity; the utility model has the beneficial effects that the cooling liquid in the flow channel cavity is in direct contact with four planes in the circumferential direction of the battery cell, the heat dissipation area of the battery cell is increased, the heat dissipation efficiency is improved, a plurality of concave pressing tables which are in contact with the surface of the battery cell are designed, the end face of each pressing table is in contact with the surface of the battery cell, the firmness of connection and fixation of the heat dissipation shell and the battery cell is enhanced, and the structural strength of the combination of the battery cell and the heat dissipation shell is improved.

Description

Battery module, battery module and battery pack

Technical Field

The utility model belongs to the technical field of battery thermal management, and particularly relates to a battery module, a battery module and a battery pack.

Background

The battery thermal management system mainly aims at radiating heat at high temperature and heating or reducing the heat radiation at low temperature. The heat dissipation mode in the market at present mainly is pipeline liquid cooling, and pipeline liquid cooling adopts runner formula liquid cooling board, and the liquid cooling board is located battery module top or below, is located between battery module below and the battery package bottom plate generally, or liquid cooling board and battery package bottom plate modes such as integrated.

However, in the prior art, most of the liquid cooling plates of the battery modules are mainly arranged above or below the battery modules, so that the contact area between the liquid cooling plates and the battery cells is small, and the heat dissipation performance of the battery cells is poor.

Disclosure of Invention

The utility model aims at solving the technical problems, and provides a battery module, a battery module and a battery pack, which achieve the effect of efficient heat dissipation of a battery cell.

In view of this, the present utility model provides a battery module including:

the heat dissipation shell is provided with a water inlet and a water outlet;

the battery cell comprises a battery cell shell and end covers arranged at two ends of the battery cell shell in the length direction X;

the surface of the radiating shell is provided with a plurality of concave pressing table structures which are abutted against the surface of the battery cell, two ends of the radiating shell in the length direction X are connected with the surface of the battery cell shell in a sealing manner, a flow channel cavity is formed between the battery cell shell and the radiating shell, and the water inlet and the water outlet are respectively communicated with the flow channel cavity.

Further, the runner cavity comprises a first cooling cavity and a third cooling cavity which are positioned on two sides of the width direction Y of the battery cell, and a second cooling cavity and a fourth cooling cavity which are positioned on two sides of the height direction Z of the battery cell, and the first cooling cavity, the second cooling cavity, the third cooling cavity and the fourth cooling cavity are sequentially and circularly communicated.

Further, the water inlet and the water outlet are respectively arranged at two ends of the radiating shell in the length direction X, the water inlet is communicated with the first cooling cavity, and the water outlet is communicated with the third cooling cavity.

Further, a first extension part used for setting a water inlet and a second extension part used for setting a water outlet are arranged on the heat dissipation shell, the water inlet is communicated with the first cooling cavity through the first extension part, and the water outlet is communicated with the third cooling cavity through the second extension part.

A battery module comprises any one of the battery modules, wherein the plurality of battery modules are arranged side by side along the width direction Y.

Further, the water inlet is connected with the inlet tube, and the delivery port is connected with the outlet pipe, and adjacent first epitaxial portion communicates through the inlet tube in proper order, and adjacent second epitaxial portion communicates through the outlet pipe in proper order.

Further, a first interface is arranged on one side, far away from the water inlet, of the first extension part, and the first interface is detachably connected with the water inlet pipe of the adjacent battery module; and a second interface is arranged on one side of the second extension part far away from the water outlet, and the second interface is detachably connected with the water outlet pipe of the adjacent battery module.

Further, the water inlet pipe is in plug-in fit with a first interface on a first extension part of an adjacent battery module, and the water outlet pipe is in plug-in fit with a second interface on a second extension part of the adjacent battery module; and the plugging positions of the first interface and the second interface are provided with radial sealing structures.

A battery pack comprises any one of the battery modules.

Further, the battery module further comprises a cooling liquid booster pump, wherein the cooling liquid booster pump is used for leading cooling liquid into the battery module from the water inlet pipe.

The beneficial effects of the utility model are as follows:

1. the cooling liquid flows into the runner cavity from the water inlet, and flows out from the water outlet after the whole runner cavity is filled with the cooling liquid, and the cooling liquid is in direct contact with four circumferential planes, so that the cooling area of the battery cell is increased, and the cooling efficiency is improved.

2. The pressing tables which are concave inwards and are in contact with the surface of the battery cell are designed, the end face of each pressing table is in contact with the surface of the battery cell, the firmness of connection fixation of the heat dissipation shell and the battery cell is enhanced, and therefore the structural strength of the combination of the battery cell and the heat dissipation shell is effectively improved.

3. The contact area of electric core and radiating shell can be increased to design a plurality of press bench structures to make the partial heat of electric core can be faster convey to the radiating shell, then cooperate the contact of coolant liquid and radiating shell and then strengthen radiating efficiency.

4. The plurality of water inlet pipes and the plurality of water outlet pipes are respectively stacked in series and installed together, and cooling liquid is introduced to enable the battery cores of the plurality of battery modules to be cooled and radiated in sequence, so that the connection firmness of the plurality of battery modules installed together can be enhanced by using the series stacking, and meanwhile, the occupied space is reduced and the integration is improved.

Drawings

Fig. 1 is a schematic view of the structure of a battery module according to the present utility model;

fig. 2 is a partial structural view illustrating another view of the battery module according to the present utility model;

fig. 3 is a schematic view of the internal structure of the battery module of the present utility model;

fig. 4 is a schematic view showing the internal structure of the battery module according to another view angle of the present utility model;

fig. 5 is a schematic view of the structure of the battery module according to the present utility model;

the label in the figure is:

1. a heat dissipation shell; 11. a water inlet; 12. a water outlet; 13. a first epitaxial portion; 14. a second epitaxial portion; 15. an end cap; 2. a battery cell; 3. a pressing table; 4. a flow channel cavity; 41. a first cooling chamber; 42. a second cooling chamber; 43. a third cooling chamber; 44. a fourth cooling chamber; 5. a water inlet pipe; 6. a water outlet pipe; x, length direction; y, width direction; z, height direction.

Detailed Description

Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some of the embodiments of the present application, but not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

In the description of the present application, it is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. For ease of description, the dimensions of the various features shown in the drawings are not drawn to actual scale. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Example 1:

the present embodiment provides a battery module including:

a heat dissipation shell 1, wherein the heat dissipation shell 1 is provided with a water inlet 11 and a water outlet 12;

the battery cell 2 comprises a battery cell shell and end covers 15 arranged at two ends of the battery cell shell in the length direction X;

wherein, the surface of heat dissipation shell 1 is equipped with a plurality of indent and with the platform 3 structure of electric core 2 surface conflict, the both ends on the length direction X of heat dissipation shell 1 all with the surface sealing connection of electric core casing, and be formed with runner chamber 4 between electric core casing and the heat dissipation shell 1, water inlet 11 and delivery port 12 are linked together with runner chamber 4 respectively.

In this technical scheme, battery module includes electric core 2 and heat dissipation shell 1, end cover on electric core 2 length direction X both ends can one end be used for setting up the utmost point post, also can both ends all be used for setting up the utmost point post, heat dissipation shell 1 length direction X on both ends all with electric core 2's electric core casing sealing connection, can be through brazing with heat dissipation shell 1 length direction X on both ends with electric core casing length direction X on both ends welding together, be equipped with water inlet 11 and delivery port 12 on heat dissipation shell 1, be equipped with a plurality of indent and with the platform 3 structure of electric core casing surface conflict on heat dissipation shell 1's surface, thereby be formed with runner chamber 4 between messenger's electric core 2 and the heat dissipation shell 1, runner chamber 4 distributes in electric core 2 circumference four planes, be equipped with water inlet 11 and delivery port 12 on heat dissipation shell 1 and be used for leading-in coolant and export coolant, and water inlet 11 and delivery port 12 are linked together with runner chamber 4 respectively.

According to the structural design, cooling liquid flows into the runner cavity 4 from the water inlet 11, the cooling liquid flows out from the water outlet 12 after filling the whole runner cavity 4, and the cooling liquid is in direct contact with four planes in the circumferential direction of the battery cell shell, so that the heat dissipation area of the battery cell 2 is increased, and the heat dissipation efficiency is improved.

Preferably, a plurality of pressing tables 3 are positioned on two sides of the width direction Y of the heat dissipation shell 1, a plurality of pressing tables 3 which are concave and are in collision with the surface of the battery cell 2 are designed, the firmness of connection and fixation of the heat dissipation shell 1 and the battery cell 2 is enhanced through collision connection between the end surface of each pressing table 3 and the surface of the battery cell 2, and therefore the structural strength of the combination of the battery cell 2 and the heat dissipation shell 1 is effectively improved; meanwhile, the contact area between the battery cell 2 and the heat dissipation shell 1 can be increased by designing the structure of the plurality of press tables 3, so that partial heat of the battery cell 2 can be transferred to the heat dissipation shell 1 more quickly, and then the heat dissipation efficiency is effectively enhanced by matching with the contact of cooling liquid and the heat dissipation shell 1.

Example 2:

the present embodiment provides a battery module having the following technical features in addition to the technical scheme including the above embodiments.

Further, the flow channel chamber 4 includes a first cooling chamber 41 and a third cooling chamber 43 on both sides in the width direction Y of the cell 2 and a second cooling chamber 42 and a fourth cooling chamber 44 on both sides in the height direction Z of the cell 2, and the first cooling chamber 41, the second cooling chamber 42, the third cooling chamber 43 and the fourth cooling chamber 44 are sequentially and circularly communicated.

In the present embodiment, the flow channel cavity 4 includes a first cooling chamber 41, a second cooling chamber 42, a third cooling chamber 43 and a fourth cooling chamber 44, the first cooling chamber 41 and the third cooling chamber 43 are located on both sides of the width direction Y of the battery cell 2, respectively, while the second cooling chamber 42 and the fourth cooling chamber 44 are located on both sides of the height direction Z of the battery cell 2, respectively, and the first cooling chamber 41, the second cooling chamber 42, the third cooling chamber 43 and the fourth cooling chamber 44 are sequentially and circularly communicated.

Through this structural design coolant liquid entering runner chamber 4, can be with first cooling chamber 41, second cooling chamber 42, third cooling chamber 43 and fourth cooling chamber 44 are filled up to make the four planes of electric core 2 circumference all covered by the coolant liquid, improve radiating efficiency.

Example 3:

the present embodiment provides a battery module, and on the basis of the battery module provided in any one of the foregoing embodiments, the battery module provided in the embodiment of the present application may further include the following technical features.

Further, the water inlet 11 and the water outlet 12 are respectively arranged at two ends of the heat dissipation shell 1 in the length direction X, the water inlet 11 is communicated with the first cooling chamber 41, and the water outlet 12 is communicated with the third cooling chamber 43.

Further, the heat dissipation shell 1 is provided with a first extension portion 13 for setting the water inlet 11 and a second extension portion 14 for setting the water outlet 12, the water inlet 11 is communicated with the first cooling chamber 41 through the first extension portion 13, and the water outlet 12 is communicated with the third cooling chamber 43 through the second extension portion 14.

In the technical scheme, a first extension part 13 and a second extension part 14 are arranged at two ends of the length direction X of the radiating shell 1, the first extension part 13 is positioned at the bottom side of the height direction Z of the radiating shell 1, the second extension part 14 is positioned at the top side of the height direction Z of the radiating shell 1, the water inlet 11 is arranged on the first extension part 13, the water outlet 12 is arranged on the second extension part 14, the water inlet 11 is communicated with the first cooling cavity 41 through the first extension part 13, and the water outlet 12 is communicated with the third cooling cavity 43 through the second extension part 14.

This structural design is through setting up first epitaxial portion 13 and second epitaxial portion 14 on heat dissipation shell 1 length direction X's both ends, and first epitaxial portion 13 is in heat dissipation shell 1 direction of height Z's bottom side, and second epitaxial portion 14 is located heat dissipation shell 1 direction of height Z's top side, then set up water inlet 11 and delivery port 12 respectively at first epitaxial portion 13 and second epitaxial portion 14, it is more reasonable to make water inlet 11 and delivery port 12 set up at heat dissipation shell 1's distribution, when letting in the coolant liquid to water inlet 11, the coolant liquid can fill up whole runner chamber 4 more easily, improves the practicality effectively.

Example 4:

the embodiment provides a battery module, including any one of the battery modules in the above embodiments, wherein the battery modules are plural and are arranged side by side along the width direction Y.

Further, the water inlet 11 is connected with the water inlet pipe 5, the water outlet 12 is connected with the water outlet pipe 6, the adjacent first extension parts 13 are sequentially communicated through the water inlet pipe 5, and the adjacent second extension parts 14 are sequentially communicated through the water outlet pipe 6.

In this technical solution, the battery module is composed of a plurality of battery modules, which are connected together in a side-by-side arrangement along the width direction Y, and then the water inlet pipe 5 and the water outlet pipe 6 are provided on the first extension portion 13 and the second extension portion 14 of each battery module. One end of the water inlet pipe 5 is welded and connected to the water inlet 11, and the other end of the water inlet pipe is connected with the first extension part 13 of the adjacent battery module; the water outlet pipe 6 is welded and connected to the water outlet 12, and the other end is connected to the second extension 14 of the adjacent battery module.

Through the structural design, each adjacent first extension part 13 can be communicated in sequence through the water inlet pipe 5; similarly, the adjacent second extension portions 14 are sequentially communicated through the water outlet pipe 6, so that all the water inlet pipes 5 and the water outlet pipes 6 of the battery modules are respectively stacked and installed together in series, the battery cores 2 of the battery modules are sequentially cooled and radiated when cooling liquid is introduced, and then the connection firmness of the battery modules installed together can be enhanced by stacking in series, and meanwhile, the occupied space is reduced, and the integration is improved.

Example 5:

the present embodiment provides a battery module, which may further include the following technical features on the basis of the technical solution provided in embodiment 4 above.

Further, a first interface is arranged on one side of the first extension part 13 away from the water inlet 11, and the first interface is detachably connected with the water inlet pipe 5 of the adjacent battery module; the side of the second extension 14 remote from the water outlet 12 is provided with a second interface which is detachably connected with the water outlet pipe 6 of an adjacent battery module.

The first interface is detachably connected with the water inlet pipe 5 of the adjacent battery module, the second interface is detachably connected with the water outlet pipe 6 of the adjacent battery module, and when the number of the battery modules is required to be increased or decreased, the connection of cooling flow channels of the battery modules is facilitated;

further, the water inlet pipe 5 is in plug-in fit with a first interface on the first extension part 13 of the adjacent battery module, and the water outlet pipe 6 is in plug-in fit with a second interface on the second extension part 14 of the adjacent battery module; and the plugging positions of the first interface and the second interface are respectively provided with a radial sealing structure _。

In the technical scheme, the plurality of water inlet pipes 5 are respectively in plug-in fit with the first interfaces on the adjacent first extension parts 13, the plurality of water outlet pipes 6 are respectively in plug-in fit with the second interfaces on the adjacent second extension parts 14, so that the plurality of water inlet pipes 5 are installed together in series, and the plurality of water outlet pipes 6 are installed together in series.

Then, radial sealing structures are arranged at the plugging positions of the water inlet pipe 5 and the first interface and the plugging positions of the water outlet pipe 6 and the second interface, the tightness of the connecting positions is guaranteed through the radial sealing structures, the influence on the heat dissipation of the battery cell 2 caused by leakage of the connecting positions when cooling liquid is introduced is avoided, and the practicability is effectively improved.

Example 6:

this embodiment provides a battery pack including any one of the battery modules described in embodiments 4 to 5 above.

Further, a coolant booster pump for introducing coolant from the water inlet pipe 5 into the battery module is also included.

In this technical scheme, set up the coolant booster pump in battery module's outside, utilize the coolant booster pump to let in the coolant from the water inlet 11 of the inlet tube 5 of the outside, then let the coolant get into each heat dissipation shell 1 in proper order, make the coolant circulate in the runner chamber 4 of a plurality of battery modules, cool off the heat dissipation to the electric core 2 of a plurality of battery modules, then follow outlet pipe 6 at last.

The flow speed of the cooling liquid is improved by arranging the cooling liquid booster pump, so that the flow of the cooling liquid in the battery module is accelerated, the heat exchange efficiency of the cooling liquid is enhanced, and the cooling effect is improved.

The embodiments of the present application and the features of the embodiments may be combined without conflict, and the present application is not limited to the specific embodiments described above, which are merely illustrative, not restrictive, and many forms may be made by those of ordinary skill in the art, without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims (10)

1. A battery module, comprising:

the heat dissipation device comprises a heat dissipation shell (1), wherein the heat dissipation shell (1) is provided with a water inlet (11) and a water outlet (12);

the battery cell (2), the battery cell (2) comprises a battery cell shell and end covers (15) arranged at two ends of the battery cell shell in the length direction X;

wherein, the surface of heat dissipation shell (1) is equipped with a plurality of indent and with the platform (3) structure of electric core (2) surface conflict, both ends on heat dissipation shell (1) length direction (X) all are connected with the surface seal of electric core casing, and are formed with runner chamber (4) between electric core casing and the heat dissipation shell (1), water inlet (11) and delivery port (12) are linked together with runner chamber (4) respectively.

2. A battery module according to claim 1, wherein the flow path chamber (4) includes a first cooling chamber (41) and a third cooling chamber (43) on both sides in the width direction (Y) of the battery cell (2), and a second cooling chamber (42) and a fourth cooling chamber (44) on both sides in the height direction (Z) of the battery cell (2), and the first cooling chamber (41), the second cooling chamber (42), the third cooling chamber (43) and the fourth cooling chamber (44) are in circulation communication in this order.

3. A battery module according to claim 2, wherein the water inlet (11) and the water outlet (12) are provided at both ends in the longitudinal direction (X) of the heat dissipation case (1), respectively, and the water inlet (11) communicates with the first cooling chamber (41), and the water outlet (12) communicates with the third cooling chamber (43).

4. A battery module according to claim 3, characterized in that the heat dissipation casing (1) is provided with a first extension (13) for providing the water inlet (11) and a second extension (14) for providing the water outlet (12), the water inlet (11) is communicated with the first cooling chamber (41) through the first extension (13), and the water outlet (12) is communicated with the third cooling chamber (43) through the second extension (14).

5. A battery module comprising a battery module according to any one of claims 1 to 4, wherein the plurality of battery modules are arranged side by side in the width direction (Y).

6. The battery module according to claim 5, wherein the water inlet (11) is connected with a water inlet pipe (5), the water outlet (12) is connected with a water outlet pipe (6), adjacent first extension parts (13) are sequentially communicated through the water inlet pipe (5), and adjacent second extension parts (14) are sequentially communicated through the water outlet pipe (6).

7. The battery module according to claim 6, wherein a first interface is arranged on the side of the first extension part (13) away from the water inlet (11), and the first interface is detachably connected with the water inlet pipe (5) of the adjacent battery module; and a second interface is arranged on one side of the second epitaxial part (14) far away from the water outlet (12), and the second interface is detachably connected with the water outlet pipe (6) of the adjacent battery module.

8. A battery module according to claim 7, wherein the inlet pipe (5) is in plug-in fit with a first interface on a first extension (13) of an adjacent battery module, and the outlet pipe (6) is in plug-in fit with a second interface on a second extension (14) of an adjacent battery module; and the plugging positions of the first interface and the second interface are provided with radial sealing structures.

9. A battery pack comprising a battery module according to any one of claims 5 to 8.

10. The battery pack according to claim 9, further comprising a coolant booster pump for passing coolant from the water inlet pipe (5) into the battery module.