CN218586161U - Battery module, battery package and consumer - Google Patents

Abstract

The application provides a battery module, battery package and consumer relates to power battery technical field. The battery module is equipped with: the battery comprises a plurality of battery monomers, a plurality of connecting rods and a plurality of connecting rods, wherein the battery monomers are provided with two large surfaces which are oppositely arranged, and the large surface directions of the battery monomers are configured to be distributed along the front-back direction; the cold plate assembly is provided with a cooling cavity along the front-back direction, the partial structure of the cold plate assembly is positioned at the upper end and/or the lower end of the battery monomer, and the structure of the part extends to the large surface of the battery monomer along the up-down direction and is in contact with the large surface of the battery monomer so as to be used for heat conduction of the battery monomer. The free big face of battery distributes along the aspect of the front and back, and the cold drawing subassembly is provided with the cooling chamber that distributes along the fore-and-aft direction, when the cold drawing subassembly contacts with the free big face of battery, can take away the heat that the battery monomer produced through the cooling chamber through the coolant liquid stream to the realization improves the free security of battery to the free cooling of battery.

Description

Battery module, battery package and consumer

Technical Field

The application relates to the technical field of power batteries, in particular to a battery module, a battery pack and electric equipment.

Background

Energy conservation and emission reduction are the key points of sustainable development of the automobile industry, and electric vehicles become important components of the sustainable development of the automobile industry due to the advantages of energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in its development.

In the development of battery technology, in addition to improving the energy density of the battery, the safety performance of the battery is a considerable problem. Therefore, how to improve the safety performance of the battery is a technical problem that needs to be solved urgently in the battery technology.

SUMMERY OF THE UTILITY MODEL

An object of this application is to provide a battery module, battery package and consumer, can cool off the free big face of battery, improve the free security of battery.

In order to achieve the purpose, the following technical scheme is adopted in the application:

in a first aspect, the present application provides a battery module device, including: the battery comprises a plurality of battery cells, a plurality of connecting rods and a plurality of connecting rods, wherein the battery cells are provided with two large faces which are oppositely arranged, and the large face directions of the battery cells are configured to be distributed along the front-back direction; the cold plate assembly is arranged on the front and rear sides of the battery body, a cooling cavity is formed in the front and rear sides of the cold plate assembly, part of the structure of the cold plate assembly is located at the upper end and/or the lower end of the battery body, and the structure of the part extends to the large face of the battery body along the up and down direction and is in contact with the large face of the battery body to be used for heat conduction of the battery body.

At the in-process of above-mentioned realization, the free big face of battery distributes along the aspect of the front and back, and the cold drawing subassembly is provided with the cooling chamber that distributes along the fore-and-aft direction, when the cold drawing subassembly contacts with the free big face of battery, can take away the heat that the battery monomer produced through the cooling chamber through the coolant liquid stream to the realization is to the free cooling of battery, improves the free security of battery.

In some embodiments, the cold plate assembly includes a first cold plate member disposed between two adjacent battery cells for contacting large faces of the two battery cells, respectively.

In the process of the realization, the first cold plate piece is arranged between the two adjacent single batteries, the large surfaces of the two single batteries can be respectively cooled, the heat dissipation of the two adjacent single batteries is facilitated, the temperature difference between the single batteries is reduced, the expansion of the single batteries is reduced, and the capacity of the single batteries is ensured.

In some embodiments, at least one first cold plate member is disposed between two adjacent battery cells to form an expansion gap between the two adjacent battery cells.

In the process of foretell realization, can cool off two adjacent battery monomers respectively through first cold plate spare, and because first cold plate spare respectively with two adjacent battery monomer's big face contact to make and form the expansion gap between these two battery monomers, this expansion space can be used for the battery monomer in the inflation of charge-discharge in-process, guarantees the safety of product.

In some embodiments, the first cold plate member includes a first horizontal plate connected to the first vertical plate, and the first horizontal plate is disposed at an upper end and/or a lower end of the battery cell, and the first vertical plate is configured to contact a large surface of the battery cell.

At the in-process of above-mentioned realization, through being connected first horizontal plate and first vertical board, not only can cool off the free big face of battery, simultaneously because first horizontal plate and first vertical board are connected with the free different faces of battery respectively for battery monomer forms a whole back with first cold plate spare, can increase its assembly strength, guarantees the safe in utilization of product.

In some embodiments, the cold plate assembly further includes a second cold plate member configured to be an outer edge of the outermost battery cell and configured to have at least a portion thereof in contact with a major surface of the battery cell.

In the process of realizing the structure, the second cold plate is arranged at the outer edge of the outermost battery monomer and can be connected with the large surface of the outer edge of the second cold plate, so that the temperature difference between the battery monomers is reduced, the expansion of the battery monomers is reduced, and the capacity of the battery monomers is ensured.

In some embodiments, the outer edge of the outermost battery cell is provided with at least one second cold plate member.

In some embodiments, the second cold plate member includes a second horizontal plate and a second vertical plate, the second horizontal plate is connected to the second vertical plate, and the second horizontal plate is disposed at an upper end and/or a lower end of the battery cell, and the second vertical plate is disposed to contact a large surface of the battery cell.

At the in-process of above-mentioned realization, through being connected the second horizontal plate with the vertical board of second, not only can cool off the free big face of battery, simultaneously because the second horizontal plate and the vertical board of second are connected with the free different faces of battery respectively for battery monomer and the cold board spare of second form a whole back, can increase its assembly strength, guarantee the safe in utilization of product.

In some embodiments, the first cold plate member is in communication with the second cold plate member. Through with the cold plate intercommunication of first cold plate and second for the coolant liquid can flow in the cold plate of first cold plate and second, can carry out the thermal management to the battery monomer of difference when, also conveniently to the thermal management of battery monomer.

In a second aspect, the present application further provides a battery pack including the battery module according to any one of the above aspects.

Since the battery pack provided in the second aspect of the present application includes the battery module described in the technical solution of the first aspect, all technical effects of the embodiments are achieved, and are not described herein again.

In a third aspect, the present application further provides an electric device, which includes the battery pack as described above.

Because the electric device provided in the third aspect of the present application includes the battery pack in the technical solution of the second aspect, all technical effects of the above embodiments are achieved, and are not described herein again.

Additional features and advantages of the present application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the present application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for a user of ordinary skill in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a battery module disclosed in an embodiment of the present application.

Fig. 2 is a top view of a battery module according to an embodiment of the present disclosure.

Fig. 3 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A of fig. 2.

Fig. 4 is a partially enlarged schematic view of fig. 3.

Fig. 5 is a schematic structural view illustrating a first cold plate of a battery module according to an embodiment of the present disclosure.

Fig. 6 is a sectional view of a first cold plate of a battery module disclosed in an embodiment of the present application.

Fig. 7 is a schematic structural view illustrating a second cold plate of a battery module according to an embodiment of the present disclosure.

Fig. 8 is a sectional view of a second cold plate of a battery module disclosed in an embodiment of the present application.

Reference numerals

100. A battery cell; 200. a cold plate assembly; 201. a first cold plate member; 2011. a first horizontal plate; 2012. a first vertical plate; 202. a second cold plate member; 2021. a second horizontal plate; 2022. a second vertical plate; 203. a cooling chamber; 300. the gap is expanded.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a user of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience of describing the present application and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case to a user of ordinary skill in the art.

Examples

In the application, the battery cell can provide a single physical module with voltage and capacity, namely the battery cell comprises an electrode assembly and electrolyte, the electrode assembly consists of a positive electrode plate, a negative electrode plate and a separation film, and the battery cell mainly depends on metal ions to move between the positive electrode plate and the negative electrode plate to work; the positive pole piece comprises a positive pole current collector and a positive pole active substance layer, the positive pole active substance layer is coated on the surface of the positive pole current collector, the positive pole current collector which is not coated with the positive pole active substance layer protrudes out of the positive pole current collector which is coated with the positive pole active substance layer, and the positive pole current collector which is not coated with the positive pole active substance layer is used as a positive pole lug. Taking a lithium ion battery as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobaltate, lithium iron phosphate, ternary lithium, lithium manganate, or the like. The negative pole piece comprises a negative pole current collector and a negative pole active substance layer, wherein the negative pole active substance layer is coated on the surface of the negative pole current collector, the negative pole current collector which is not coated with the negative pole active substance layer protrudes out of the negative pole current collector which is coated with the negative pole active substance layer, and the negative pole current collector which is not coated with the negative pole active substance layer is used as a negative pole lug. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon, silicon, or the like. In order to ensure that the fuse is not fused when a large current is passed, the number of the positive electrode tabs is multiple and the positive electrode tabs are stacked together, and the number of the negative electrode tabs is multiple and the negative electrode tabs are stacked together. The material of the isolation film may be PP (polypropylene) or PE (polyethylene).

The development of battery technology requires consideration of various design factors, such as discharge capacity, charge/discharge rate, service life, and energy density, as well as safety performance.

For the long-strip-shaped single battery, because the shell is made of aluminum and the wall thickness is thin, the single battery gradually expands and contracts in the continuous charging and discharging cycle process, and the large surface of the long-strip-shaped single battery is not cooled, so that a gap is possibly generated between the positive pole piece and the diaphragm of the middle section part, and in the cycle process, a gas generation phenomenon is possibly generated, and the gap is filled with gas, so that the capacity of the single battery is enabled to be subjected to water jumping.

In view of the above, as shown in fig. 1 to 3, in a first aspect, the present application provides a battery module comprising: battery monomer 100 and cold plate subassembly 200, both sides all set up in output utmost point post (positive negative pole promptly) around battery monomer 100, cold plate subassembly 200 with battery monomer 100 is connected, just partial structure of cold plate subassembly 200 with battery monomer 100's big face contacts, so that battery monomer 100 is carrying out the in-process of charging and discharging, cold plate subassembly 200 can be to the big face of battery monomer 100 heat conduction respectively not.

Specifically, a plurality of battery cells 100 having two large faces oppositely arranged, the large face directions of the battery cells 100 being arranged to be distributed in the front-rear direction; and a cold plate assembly 200 provided with a cooling cavity 203 in the front-rear direction, wherein a part of the structure of the cold plate assembly 200 is located at an upper end and/or a lower end of the battery cell 100, and the part of the structure extends to a large surface of the battery cell 100 in the up-down direction and contacts the large surface of the battery cell 100 to conduct heat of the battery cell 100.

For example, the battery cells 100 are provided with a plurality of cooling chambers 203, each cooling chamber 203 is communicated with each other, for example, connected through a pipe, so as to facilitate thermal management of the battery cells 100, the battery cells 100 are distributed along the front-back direction, the battery cells 100 are distributed along the left-right direction at intervals, the cooling plate assembly 200 can be in contact with the large surface of each battery cell 100, and the cooling plate assembly 200 is provided with the cooling chambers 203 corresponding to each battery cell 100.

In the process of the above implementation, the large surface of the battery cell 100 is distributed along the front and back directions, the cold plate assembly 200 is provided with the cooling cavity 203 distributed along the front and back directions, and when the cold plate assembly 200 contacts the large surface of the battery cell 100, the heat generated by the battery cell 100 can be taken away through the cooling cavity 203 by the coolant flowing, so that the battery cell 100 can be cooled, and the safety of the battery cell 100 is improved.

As shown in fig. 4 to 6, the cold plate assembly 200 includes a first cold plate member 201 disposed between two adjacent battery cells 100 for contacting the large surfaces of the two battery cells 100, respectively. For example, in order to form the expansion gap 300 between two adjacent battery cells 100, the length of the first cold plate member 201 in the up-down direction is set to be smaller than the length of the battery cell 100 in the up-down direction, and a structural adhesive may be applied between the first cold plate member 201 and the battery cell 100 to connect the first cold plate member 201 and the battery cell 100.

In the process of the above-mentioned realization, first cold plate 201 sets up between two adjacent battery monomer 100, can cool off respectively to big face between them, is favorable to dispelling the heat to two adjacent battery monomer 100, reduces the difference in temperature between the battery monomer 100 to reduce the inflation of battery monomer 100, guarantee battery monomer 100's capacity.

Referring to fig. 3 again, at least one first cold plate 201 is disposed between two adjacent battery cells 100 to form an expansion gap 300 between the two adjacent battery cells 100; that is, one first cold plate member 201 may be disposed on the upper side of the battery cell 100, or on the lower side of the battery cell 100, or two first cold plate members 201 may be disposed, one of which is disposed on the upper side of the battery cell 100, and the other is disposed on the lower side of the battery cell 100, and the two first cold plate members 201 are spaced apart from each other to form the expansion gap 300 with the battery cell 100.

In the process of the above implementation, the two adjacent battery cells 100 can be cooled by the first cold plate 201, and the first cold plate 201 is in contact with the large surfaces of the two adjacent battery cells 100, so that the expansion gap 300 is formed between the two battery cells 100, and the expansion space can be used for the expansion of the battery cells 100 in the charging and discharging process, thereby ensuring the safety of the product.

Referring to fig. 4 or 6 again, the first cold plate 201 includes a first horizontal plate 2011 and a first vertical plate 2012, the first horizontal plate 2011 is connected to the first vertical plate 2012, and the first horizontal plate 2011 is disposed at the upper end and/or the lower end of the battery cell 100, that is, when there are two first cold plate members 201 located between two adjacent battery cells 100, the first horizontal plate 2011 of one of the first cold plate members 201 is disposed at the upper end of the battery cell 100, the first horizontal plate 2011 of the other one of the first cold plate members 201 is disposed at the lower end of the battery cell 100, and the first vertical plate 2012 is configured to contact with the large surface of the battery cell 100. It can be understood that when two first cold plates 201 are disposed between two adjacent battery cells 100, the first cold plates 201 at the upper and lower ends of the battery cell 100 may be conducted through a pipeline, and the battery cell 100 may also be independently thermally managed, where it should be noted that the first cold plate 201 is provided with the cooling cavity 203, and the cooling cavity 203 may be located at a position where the first horizontal plate 2011 is connected with the first vertical plate 2012, may be located at the first vertical plate 2012, or may be provided with the cooling cavity 203 at both positions, and may be set according to actual situations, which is not particularly limited herein.

In the process of the above realization, by connecting the first horizontal plate 2011 with the first vertical plate 2012, not only the large surface of the single battery 100 can be cooled, but also the single battery 100 and the first cold plate 201 can be integrally formed because the first horizontal plate 2011 and the first vertical plate 2012 are respectively connected with different surfaces of the single battery 100, so that the assembly strength of the single battery 100 and the first cold plate 201 can be increased, and the use safety of the product can be ensured.

As shown in fig. 7 to 8, the cold plate assembly 200 further includes a second cold plate member 202, the second cold plate member 202 may be connected to the battery cell 100 by coating structural adhesive, the second cold plate member 202 is disposed at an outer edge of the outermost battery cell 100, and at least a portion of the second cold plate member is in contact with a large surface of the battery cell 100; that is, when the plurality of battery cells 100 are distributed along the left-right direction, the first cold plate 201 is disposed on the inner side of the battery cell 100 at the leftmost end and the rightmost end, and the second cold plate 202 is disposed on the outer side of the battery cell 100, so that the two large surfaces of the battery cell 100 located at the outermost sides are heat-conducted by the cooperation of the first cold plate 201 and the second cold plate 202.

In the implementation process, the second cold plate 202 is disposed at the outer edge of the outermost battery cell 100, and can connect the large surfaces of the outer edge of the second cold plate, so as to reduce the temperature difference between the battery cells 100, thereby reducing the expansion of the battery cells 100 and ensuring the capacity of the battery cells 100.

In some embodiments, the outer edge of the outermost battery cell 100 is provided with at least one second cold plate member 202; that is, one second cold plate member 202 may be disposed on the upper side of the battery cell 100, or on the lower side of the battery cell 100, or two second cold plate members 202 may be disposed, one of which is disposed on the upper side of the battery cell 100, and the other is disposed on the lower side of the battery cell 100, and the two second cold plate members 202 are spaced apart from each other to form the expansion gap 300 with the battery cell 100.

Referring to fig. 8 again, the second cold plate member 202 includes a second horizontal plate 2021 and a second vertical plate 2022, the second horizontal plate 2021 is connected to the second vertical plate 2022, the second horizontal plate 2021 is disposed at the upper end and/or the lower end of the battery cell 100, and the second vertical plate 2022 is disposed to contact the large surface of the battery cell 100; that is, when two first cold plates 201 are disposed on the outermost battery cell 100, the first horizontal plate 2011 of one of the first cold plates 201 is disposed at the upper end of the battery cell 100, the first horizontal plate 2011 of the other first cold plate 201 is disposed at the lower end of the battery cell 100, the first vertical plate 2012 is configured to contact the large surface of the battery cell 100, and when one first cold plate 201 is disposed on the outermost battery cell 100, the first cold plate 201 may be disposed at the lower end of the battery cell 100 or at the upper end of the battery cell 100. It can be understood that, when two second cold plate members 202 are disposed on the outermost battery cell 100, the second cold plate members 202 disposed at the upper and lower ends of the battery cell 100 may be conducted through a pipe, and the battery cell 100 may also be independently thermally managed, where it should be noted that, the second cold plate member 202 is provided with the cooling cavity 203, and the cooling cavity 203 may be located at a position where the second horizontal plate 2021 is connected to the second vertical plate 2022, may also be located at the second vertical plate 2022, or both of the two positions may be provided with the cooling cavity 203, and may be set according to actual situations, which is not particularly limited herein.

In the process of the above implementation, the second horizontal plate 2021 is connected to the second vertical plate 2022, so that the large surface of the battery cell 100 can be cooled, and meanwhile, the second horizontal plate 2021 and the second vertical plate 2022 are connected to different surfaces of the battery cell 100, so that the assembly strength of the battery cell 100 and the second cold plate 202 can be increased after the battery cell 100 and the second cold plate 202 form a whole, and the use safety of the product is ensured.

In some embodiments, the first cold plate 201 is in communication with the second cold plate 202, and it is understood that the first cold plate 201 on the upper side of the battery cell 100 is in communication with the second cold plate 202, the first cold plate 201 on the lower side of the battery cell 100 is in communication with the second cold plate 202, or the first cold plate 201 and the second cold plate 202 on the upper and lower sides of the battery cell 100 are in communication. Through the first cold plate 201 and the second cold plate 202 intercommunication for the coolant liquid can flow in first cold plate 201 and the cold plate 202 of second, can carry out the heat conduction to different battery monomer 100, also conveniently to battery monomer 100's thermal management.

In a second aspect, the present application also provides a battery pack including the battery module as set forth in any one of the above. Illustratively, the battery pack further includes a battery case (not shown) configured to receive the battery module.

Since the battery pack provided in the second aspect of the present application includes the battery module described in the technical solution of the first aspect, all technical effects of the embodiments are achieved, and are not described herein again.

In a third aspect, the present application further provides an electric device, which includes the battery pack as described above. The electric equipment can be electric equipment such as an electric toy, an electric tool, a battery car, an electric automobile and a spacecraft, when the electric equipment is a vehicle, the vehicle can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range-extending automobile. The interior of the vehicle is provided with a battery pack, which may be arranged at the bottom or at the head or tail of the vehicle. The battery pack may be used for power supply of the vehicle, for example, the battery pack may serve as an operation power source of the vehicle. The vehicle may also include a controller and a motor, the controller being configured to control the battery pack to power the motor, for example, for start-up, navigation, and operational power requirements while traveling of the vehicle.

Because the electric device provided in the third aspect of the present application includes the battery pack in the technical solution of the second aspect, all technical effects of the above embodiments are achieved, and are not described herein again.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A battery module, comprising:

the battery comprises a plurality of battery units, a plurality of connecting rods and a plurality of connecting rods, wherein the battery units are provided with two large faces which are oppositely arranged, and the large face directions of the battery units are configured to be distributed along the front-back direction;

the cold plate assembly is arranged on the front and rear sides of the battery body, a cooling cavity is formed in the front and rear sides of the cold plate assembly, part of the structure of the cold plate assembly is located at the upper end and/or the lower end of the battery body, and the structure of the part extends to the large face of the battery body along the up and down direction and is in contact with the large face of the battery body to be used for heat conduction of the battery body.

2. The battery module according to claim 1, wherein the cold plate assembly comprises a first cold plate member disposed between two adjacent battery cells for contacting the large faces of the two battery cells, respectively.

3. The battery module according to claim 2, wherein at least one first cold plate member is disposed between adjacent two of the battery cells to form an expansion gap between the adjacent two of the battery cells.

4. The battery module according to claim 2, wherein the first cold plate member includes a first horizontal plate and a first vertical plate, the first horizontal plate is connected to the first vertical plate, and the first horizontal plate is disposed at an upper end and/or a lower end of the battery cell, and the first vertical plate is disposed to contact a large surface of the battery cell.

5. The battery module of claim 2, wherein the cold plate assembly further comprises a second cold plate member configured to be an outer edge of the outermost battery cell and configured to have at least a portion thereof in contact with a major surface of the battery cell.

6. The battery module according to claim 5, wherein the outer edge of the outermost battery cell is provided with at least one of the second cold plate members.

7. The battery module according to claim 5, wherein the second cold plate member includes a second horizontal plate and a second vertical plate, the second horizontal plate is connected to the second vertical plate, and the second horizontal plate is disposed at an upper end and/or a lower end of the battery cell, and the second vertical plate is disposed to contact a large surface of the battery cell.

8. The battery module according to claim 5, wherein the first cold plate member is in communication with the second cold plate member.

9. A battery pack comprising the battery module according to any one of claims 1 to 8.

10. An electric device comprising the battery pack according to claim 9.

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