Battery module and battery pack

Abstract

The utility model provides a battery module and a battery pack. The battery module comprises a mounting frame, an adapter plate and at least two battery units, one end of each battery unit is connected to one side of the adapter plate, and each battery unit is electrically connected with the adapter plate. The mounting frame comprises an upper shell and a lower shell, the upper shell covers the lower shell to form an accommodating cavity, the at least two battery units are arranged in the accommodating cavity at intervals, and the adapter plate and each battery unit are clamped between the upper shell and the lower shell. According to the battery module, the assembly efficiency can be further improved on the basis of omitting a bracket to reduce the influence on the yield of subsequent aluminum wire welding and simplifying the assembly process.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery assembly technical field, especially a kind of battery module and battery pack. BACKGROUND

[0002] In electric automobile and electric vehicle industry, more and more lithium batteries are used as power supply.For electric vehicles, cylindrical batteries are currently used as battery units, and multiple battery units are further fixed in a bracket by point gluing, then connected in series and parallel using aluminum or nickel sheet, and the voltage signal is collected using wire harness or FPC soft board to complete aluminum wire welding.After the battery unit completes aluminum wire welding, it needs to be placed in a shell to form a battery module, and the assembly process is complex, the efficiency is low, which leads to high assembly cost of battery module.In addition, aluminum wire welding is fixed by bracket or shell, and the deviation is large, which is influenced by the size deviation of parts and the deviation of jig, and has a great influence on the yield of subsequent aluminum wire welding, such as Chinese patent application No.202010714558.1, which discloses a lithium battery module using PCB instead of plastic bracket and its assembly method, which integrates the bracket, aluminum sheet and collection board on the PCB, which eliminates the bracket, reduces the influence on the yield of subsequent aluminum wire welding, and simplifies the assembly process and improves the assembly efficiency, but it needs to be fixed gradually to realize the shell, and the assembly process of the shell is still complicated, and the assembly efficiency of the battery module still cannot meet the market demand. SUMMARY

[0003] The utility model aims at overcoming the deficiencies in the prior art, providing a battery module and battery pack that can omit the bracket to reduce the influence on the yield of subsequent aluminum wire welding and simplify the assembly process, and further improve the assembly efficiency.

[0004] The utility model aims at overcoming the deficiencies in the prior art, providing a battery module and battery pack that can omit the bracket to reduce the influence on the yield of subsequent aluminum wire welding and simplify the assembly process, and further improve the assembly efficiency.

[0005] A battery module includes a mounting frame, an adapter plate and at least two battery units, one end of each battery unit is connected to one side of the adapter plate, and each battery unit is electrically connected to the adapter plate, the mounting frame includes an upper shell and a lower shell, the upper shell cover is arranged in the lower shell to form a receiving cavity, at least two battery units are arranged in the receiving cavity, and the adapter plate and each battery unit are clamped between the upper shell and the lower shell.

[0006] In one embodiment, one end of each battery unit away from the pole is connected to the lower shell, and one side of the adapter plate away from the battery unit abuts against the upper shell.

[0007] In one of the embodiments, one end of each of the battery units is glued to the lower shell.

[0008] In one of the embodiments, one end of each of the battery units is glued to the lower shell.

[0009] In one of the embodiments, the battery module further comprises at least one buffer member connected to the upper shell or the lower shell, and the buffer member is arranged in the accommodating cavity, and the buffer member is located on the side of the adapter plate away from the battery units and abuts against the adapter plate.

[0010] In one of the embodiments, the buffer member is a buffer rubber pad.

[0011] In one of the embodiments, the adapter plate comprises a circuit board body, a solder pad, and at least two connecting members, the circuit board body is electrically connected to the solder pad, the end of each of the battery units is at least partially connected to the circuit board body, the solder pad is arranged away from each of the battery units, and the two connecting members are arranged one-to-one corresponding to the two battery units, and each of the battery units is electrically connected to the solder pad through the corresponding connecting member.

[0012] In one of the embodiments, the solder pad is connected to the side of the circuit board body away from each of the battery units.

[0013] The circuit board body is provided with at least two exposed holes, the two exposed holes are arranged one-to-one corresponding to the two battery units, the positive and negative poles of the end of each of the battery units are at least partially exposed to the circuit board body through the corresponding exposed hole, each of the connecting members is arranged in the corresponding exposed hole, and the positive pole of each of the battery units is connected to the solder pad through the connecting member, and the negative pole of each of the battery units is connected to the solder pad through the connecting member.

[0014] In one of the embodiments, each of the connecting members comprises a positive pole connecting portion and a negative pole connecting portion, the positive pole connecting portion and the negative pole connecting portion are arranged in insulation, the positive pole connecting portion is arranged in the corresponding exposed hole and is electrically connected to the solder pad and the positive pole of the corresponding battery unit respectively, and the negative pole connecting portion is arranged in the corresponding exposed hole and is electrically connected to the solder pad and the negative pole of the corresponding battery unit respectively.

[0015] In one of the embodiments, each of the exposed holes comprises a positive pole exposed portion and a negative pole exposed portion, and the positive pole exposed portion and the negative pole exposed portion are arranged in interval.

[0016] The positive exposed part of the two exposed holes is arranged in one-to-one correspondence with the positive pole of the two battery units, and the positive pole of the end part of each battery unit is at least partially exposed to the circuit board body through the corresponding positive exposed hole, and the positive connection part is arranged in the corresponding positive exposed part and is electrically connected with the pad and the positive pole of the corresponding battery unit respectively;

[0017] The negative exposed part of the two exposed holes is arranged in one-to-one correspondence with the negative pole of the two battery units, and the negative pole of the end part of each battery unit is at least partially exposed to the circuit board body through the corresponding negative exposed hole, and the negative connection part is arranged in the corresponding negative exposed part and is electrically connected with the pad and the negative pole of the corresponding battery unit respectively.

[0018] A battery pack comprising a battery management system and the battery module of any one of the above embodiments, wherein the battery management system is electrically connected with the adapter plate.

[0019] Compared with the prior art, the battery module has at least the following advantages:

[0020] The battery module of the utility model, make every battery unit's one side connect in the adapter plate one side, and adapter plate integration support, confluence aluminum piece and collection board in an organic whole, further the upper shell cover is located the lower shell forms the accommodation cavity, at least two the battery unit interval is arranged in the accommodation cavity, even make adapter plate and lower shell realize the fixed installation to battery unit, realized the support's omission, simplified battery module's assembly procedure, and improved the reliability of aluminum wire welding, and cooperate the adapter plate with every battery unit is clamped together between the upper shell and the lower shell, even make adapter plate and battery unit clamp together between the upper shell and the lower shell, further simplified battery module's assembly procedure, further further in the omission support to reduce the influence on the yield of subsequent aluminum wire welding and simplify the assembly procedure, improve the assembly efficiency of battery module, better meet the needs of market. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be briefly introduced the drawings needed to be used in the embodiment, should understand, the following drawings only shows some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for the ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other related drawings according to these drawings.

[0022] Figure 1 It is the structural schematic diagram of the battery module of an embodiment of the utility model;

[0023] Figure 2 It is Figure 1An exploded view of the battery module shown;

[0024] Figure 3 For Figure 1 A partial view of the battery module shown;

[0025] Figure 4 For Figure 2 A partial enlarged view of A of the battery module shown. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the present application, a more comprehensive description of the present application will be made below with reference to the relevant drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0027] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for illustrative purposes only and are not intended to be limiting.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein only for the purpose of describing specific embodiments of the present application and is not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0029] The present application provides a battery module. In order to better understand the battery module of the present application, the battery module of the present application is further explained as follows:

[0030] Please refer to Figures 1 to 2 A battery module 10 of an embodiment includes a mounting frame 100, a conversion board 200, and at least two battery units 300. One end of each battery unit 300 is connected to one side of the conversion board 200, and each battery unit 300 is electrically connected to the conversion board 200. The mounting frame 100 includes an upper shell 110 and a lower shell 120, the upper shell 110 is arranged on the lower shell 120 to form a receiving cavity 101, at least two battery units 300 are arranged in the receiving cavity 101, and the conversion board 200 and each battery unit 300 are clamped between the upper shell 110 and the lower shell 120.

[0031] The battery module 10 described above has one end of each battery cell 300 connected to one side of the adapter plate 200, and the adapter plate 200 integrates a support, a busbar, and a collecting plate into one, and further has the upper shell 110 covering the lower shell 120 to form a receiving cavity 101, and at least two battery cells 300 are arranged in the receiving cavity 101, so that the adapter plate 200 and the lower shell 120 are fixedly installed on the battery cells 300, the support is omitted, the assembly process of the battery module 10 is simplified, the reliability of the aluminum wire welding is improved, and the adapter plate 200 and each battery cell 300 are clamped between the upper shell 110 and the lower shell 120, so that the adapter plate 200 and the battery cell 300 are clamped between the upper shell 110 and the lower shell 120, the assembly process of the battery module 10 is further simplified, the assembly efficiency of the battery module 10 is further improved on the basis of omitting the support to reduce the influence on the yield of subsequent aluminum wire welding and simplify the assembly process, and the market demand is better met.

[0032] Please refer to Figures 1 to 3 In one embodiment, one end of each battery cell 300 away from the pole is connected to the lower shell 120, and one side of the adapter plate 200 away from the battery cell 300 abuts against the upper shell 110, so that the adapter plate 200 and the lower shell 120 are fixedly installed on both ends of the battery cell 300, and the fixing reliability of the battery cell 300 in the receiving cavity 101 is better improved. Further, the end of the battery cell 300 away from the pole is connected to the adapter plate 200, which is conducive to the electrical connection of the battery cell 300 on the adapter plate 200.

[0033] In one embodiment, one end of each battery cell is glued to the lower shell, which better ensures the firm connection of the battery cell and the lower shell.

[0034] In one embodiment, one end of each battery cell is partially glued to one side of the adapter plate, which better ensures the firm connection of the battery cell and the adapter plate. Further, the other part of the end of each battery cell not glued to the adapter plate at least includes the positive electrode and the negative electrode of the battery cell.

[0035] Please refer to Figures 1 to 3In one of the embodiments, the battery module 10 further comprises at least one buffer 400, which is connected to the upper shell 110 or the lower shell 120 and is arranged in the accommodating cavity 101, and the buffer 400 is located on the side of the adapter plate 200 away from the battery unit 300 and abuts against the adapter plate 200, so that the battery unit 300 and the adapter plate 200 are not easily damaged and deformed in the case that the upper shell 110 and the lower shell 120 have a large clamping force on the battery unit 300 and the adapter plate 200, and the battery unit 300 and the adapter plate 200 are firmly clamped between the upper shell 110 and the lower shell 120.

[0036] In one of the embodiments, the buffer is a buffer rubber pad, which effectively ensures the buffering effect on the battery unit and the adapter plate.

[0037] Please refer to Figures 2 to 4 In one of the embodiments, the adapter plate 200 comprises a circuit board body 210, a solder pad 220 and at least two connecting pieces 230, the circuit board body 210 is electrically connected to the solder pad 220, the end of each battery unit 300 is at least partially connected to the circuit board body 210, the solder pad 220 is arranged away from each battery unit 300, and two connecting pieces 230 are arranged one by one corresponding to two battery units 300, each battery unit 300 is electrically connected to the solder pad 220 through the corresponding connecting piece 230, which better realizes the integration of the bracket, the aluminum bus bar and the collecting plate in the adapter plate 200. Further, the solder pad is a copper solder pad.

[0038] Please refer to Figures 2 to 4 In one of the embodiments, the solder pad 220 is connected to the side of the circuit board body 210 away from each battery unit 300. Further, at least two exposed holes 201 are formed on the circuit board body 210, two exposed holes 201 are arranged one by one corresponding to two battery units 300, the positive and negative poles of the end of each battery unit 300 are at least partially exposed to the circuit board body 210 through the corresponding exposed hole 201, each connecting piece 230 is arranged in the corresponding exposed hole 201, the positive pole of each battery unit 300 is connected to the solder pad 220 through the connecting piece 230, and the negative pole of each battery unit 300 is connected to the solder pad 220 through the connecting piece 230, which better ensures the stability of the electrical connection between the solder pad 220 of the adapter plate 200 and the battery unit 300, and is conducive to simplifying the arrangement of the connecting pieces 230.

[0039] Please refer to Figures 2 to 4In one of the embodiments, each of the connectors 230 comprises a positive electrode connecting part 231 and a negative electrode connecting part 232, the positive electrode connecting part 231 and the negative electrode connecting part 232 are insulated, the positive electrode connecting part 231 is arranged through the corresponding exposed hole 201 and is electrically connected with the pad 220 and the positive electrode of the corresponding battery cell 300, respectively, and the negative electrode connecting part 232 is arranged through the corresponding exposed hole 201 and is electrically connected with the pad 220 and the negative electrode of the corresponding battery cell 300, respectively. Further, the positive electrode connecting part and the negative electrode connecting part are both aluminum wires, and the two ends of the aluminum wires are connected with the battery cell and the pad, respectively. Further, one end of the aluminum wire is welded to the positive electrode or the negative electrode of the battery cell, which preferably realizes the series and parallel connection of the battery cell and the pad.

[0040] Please refer to Figures 2 to 4 In one of the embodiments, each of the exposed holes 201 comprises a positive electrode exposed part 2011 and a negative electrode exposed part 2012, and the positive electrode exposed part 2011 and the negative electrode exposed part 2012 are arranged in a spaced manner. Further, the positive electrode exposed part 2011 of the two exposed holes 201 is arranged in a one-to-one corresponding manner with the positive electrode of the two battery cells 300, and the positive electrode of the end of each of the battery cells 300 is at least partially exposed to the circuit board body 210 through the corresponding positive electrode exposed hole 201, and the positive electrode connecting part 231 is arranged through the corresponding positive electrode exposed part 2011 and is electrically connected with the pad 220 and the positive electrode of the corresponding battery cell 300, respectively. Further, the negative electrode exposed part 2012 of the two exposed holes 201 is arranged in a one-to-one corresponding manner with the negative electrode of the two battery cells 300, and the negative electrode of the end of each of the battery cells 300 is at least partially exposed to the circuit board body 210 through the corresponding negative electrode exposed hole 201, and the negative electrode connecting part 232 is arranged through the corresponding negative electrode exposed part 2012 and is electrically connected with the pad 220 and the negative electrode of the corresponding battery cell 300, respectively, which is conducive to the layout of the pad 220 and the arrangement of the positive electrode connecting part 231 and the negative electrode connecting part 232.

[0041] In one of the embodiments, the upper shell and the lower shell are connected by screws, which preferably ensures that the upper shell and the lower shell firmly clamp the adapter plate and the battery cell.

[0042] The application also provides a battery pack. The battery pack in one of the embodiments comprises a battery management system and the battery module in any of the above embodiments, and the battery management system is electrically connected with the adapter plate. Further, please refer to Figures 1 to 2In the embodiment, the battery module 10 comprises a mounting frame 100, a conversion plate 200 and at least two battery units 300. One end of each battery unit 300 is connected to one side of the conversion plate 200, and each battery unit 300 is electrically connected to the conversion plate 200. The mounting frame 100 comprises an upper shell 110 and a lower shell 120, the upper shell 110 covers the lower shell 120 to form a containing cavity 101, at least two battery units 300 are arranged in the containing cavity 101, and the conversion plate 200 and each battery unit 300 are clamped between the upper shell 110 and the lower shell 120.

[0043] The battery pack adopts the battery module, improves the processing efficiency of the battery pack, and better meets the market demand.

[0044] Compared with the prior art, the battery module 10 has at least the following advantages:

[0045] The battery module 10 of the utility model, make every battery unit 300 one end is connected to one side of the conversion plate 200, and conversion plate 200 integrated support, the aluminum bar of confluence and collection board are integrated, further the upper shell 110 covers the lower shell 120 to form containing cavity 101, at least two battery units 300 are arranged in the containing cavity 101, even make conversion plate 200 and lower shell 120 realize the fixed installation of battery unit 300, realize the omission of support, simplify the assembly procedure of battery module 10, and improve the reliability of aluminum wire welding, and cooperate conversion plate 200 with every battery unit 300 is clamped between the upper shell 110 and the lower shell 120, even make conversion plate 200 and battery unit 300 are clamped between the upper shell 110 and the lower shell 120, further simplify the assembly procedure of battery module 10, further further in the omission of support to reduce the influence on the yield of subsequent aluminum wire welding and simplify the assembly procedure, improve the assembly efficiency of battery module 10, better meet the market demand.

[0046] The above embodiments only express several implementation manners of the utility model, and the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the utility model patent. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A battery module, comprising a mounting frame, an adapter plate, and at least two battery cells, wherein one end of each battery cell is connected to one side of the adapter plate, and each battery cell is electrically connected to the adapter plate, characterized in that, The mounting frame comprises an upper shell and a lower shell, the upper shell is arranged on the lower shell to form a receiving cavity, at least two battery units are arranged in the receiving cavity, and the adapter plate is arranged between the upper shell and the lower shell.

2. The battery module of claim 1, wherein, One end of each battery unit is connected to the lower shell, and one side of the adapter plate away from the battery unit is in contact with the upper shell.

3. The battery module of claim 2, wherein, One end of each battery unit is glued to the lower shell; and / or, One end of each battery unit is partially glued to one side of the adapter plate.

4. The battery module of claim 1, wherein, The battery module further comprises at least one buffer connected to the upper shell or the lower shell, and the buffer is arranged in the receiving cavity, and the buffer is located on one side of the adapter plate away from the battery unit and in contact with the adapter plate.

5. The battery module of claim 4, wherein, The buffer is a buffer rubber pad.

6. The battery module of claim 1, wherein, The adapter plate comprises a circuit board body, a solder pad, and at least two connecting pieces, the circuit board body is electrically connected to the solder pad, the end of each battery unit is at least partially connected to the circuit board body, the solder pad is arranged away from each battery unit, and the two connecting pieces are arranged one-to-one corresponding to the two battery units, each battery unit is electrically connected to the solder pad through the corresponding connecting piece.

7. The battery module of claim 6, wherein, The solder pad is connected to one side of the circuit board body away from each battery unit; At least two exposed holes are formed on the circuit board body, the two exposed holes are arranged one-to-one corresponding to the two battery units, the positive and negative electrodes of the end of each battery unit are at least partially exposed to the circuit board body through the corresponding exposed hole, each connecting piece is arranged in the corresponding exposed hole, the positive electrode of each battery unit is connected to the solder pad through the connecting piece, and the negative electrode of each battery unit is connected to the solder pad through the connecting piece.

8. The battery module of claim 7, wherein, Each connecting piece comprises a positive electrode connecting part and a negative electrode connecting part, the positive electrode connecting part and the negative electrode connecting part are arranged in insulation, the positive electrode connecting part is arranged in the corresponding exposed hole and is electrically connected to the solder pad and the positive electrode of the corresponding battery unit, respectively, and the negative electrode connecting part is arranged in the corresponding exposed hole and is electrically connected to the solder pad and the negative electrode of the corresponding battery unit, respectively.

9. The battery module of claim 8, wherein, Each exposed hole comprises a positive electrode exposed part and a negative electrode exposed part, and the positive electrode exposed part and the negative electrode exposed part are arranged in insulation; The positive electrode exposed parts of the two exposed holes are arranged one-to-one corresponding to the positive electrodes of the two battery units, the positive electrode of the end of each battery unit is at least partially exposed to the circuit board body through the corresponding positive electrode exposed hole, and the positive electrode connecting part is arranged in the corresponding positive electrode exposed part and is electrically connected to the solder pad and the positive electrode of the corresponding battery unit, respectively. The negative electrode exposed parts of the two exposed holes are arranged one-to-one corresponding to the negative electrodes of the two battery units, the negative electrode of the end of each battery unit is at least partially exposed to the circuit board body through the corresponding negative electrode exposed hole, and the negative electrode connecting part is arranged in the corresponding negative electrode exposed part and is electrically connected to the solder pad and the negative electrode of the corresponding battery unit, respectively.

10. A battery pack, characterized by, The battery management system and the battery module of any one of claims 1-9 are electrically connected.

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