CN219591581U - Battery module and electronic equipment - Google Patents

Abstract

The utility model provides a battery module and electronic equipment, wherein the battery module comprises a battery cell unit, a protection unit and first gummed paper; the battery cell unit comprises a shell with at least two independent accommodating cavities and bare battery cells arranged in the accommodating cavities, wherein each accommodating cavity is internally provided with one bare battery cell to form a battery cell group; one side of the battery cell unit is provided with a tab corresponding to the bare battery cell, and the protection unit is arranged on one side of the battery cell unit with the tab and is connected with the tab; the first gummed paper coats the protection unit and is respectively adhered to the first surface and the second surface of the battery cell unit. Compared with the traditional packaging mode, the packaging method omits the need of adhesive tape on the periphery of the bare cell, thereby greatly reducing the quantity of adhesive tape required by the battery module, reducing the packaging difficulty and improving the packaging efficiency. Meanwhile, the degree of defects such as warping and wrinkling of the gummed paper can be slowed down, the consumption of gummed paper resources is reduced, the packaging quality of the battery module is improved, and the packaging cost is saved.

Description

Battery module and electronic equipment

Technical Field

The present utility model relates to battery packaging technology, and in particular, to a battery module and an electronic device.

Background

In the battery packaging process, a plurality of battery cells are connected and fixed by using adhesive paper, and for the traditional soft package battery, in order to prevent the battery from being corroded and even causing explosion due to short circuit caused by contact of the battery and the whole machine, a plurality of adhesive papers are adhered to the periphery and the surface of each battery cell, so that the insulation effect is enhanced, and the use safety of the battery is improved. However, the multi-part adhesive tape causes more cost of the adhesive tape, and also increases the process difficulty of packaging a plurality of batteries and reduces the packaging efficiency of the batteries.

Disclosure of Invention

In view of this, the utility model provides a battery module and an electronic device, so as to at least solve the problems of high packaging difficulty and low efficiency caused by the fact that the existing battery packaging process consumes more gummed paper.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

the utility model discloses a battery module, which comprises a battery cell unit, a protection unit and first gummed paper;

the battery cell unit comprises a shell with at least two independent accommodating cavities and bare battery cells arranged in the accommodating cavities, wherein each accommodating cavity is internally provided with one bare battery cell to form a battery cell group;

one side of the battery cell unit is provided with a tab corresponding to the bare battery cell, and the protection unit is arranged on one side of the battery cell unit provided with the tab and is connected with the tab;

the first gummed paper coats the protection unit and is respectively adhered to the first surface and the second surface of the battery cell unit, and the first surface and the second surface are two surfaces opposite to each other of the battery cell unit.

Optionally, the protection unit is provided with a connector, and the connector is bent along a direction away from the battery cell unit to relatively protrude out of the surface of the first gummed paper.

Optionally, the number of the connectors is at least two.

Optionally, the battery module further comprises a second gummed paper;

a gap is formed between two adjacent cell groups so that the first surface of each cell unit is in an intermittent structure;

the second gummed paper at least partially covers the gap and is adhered to the first surface.

Optionally, the battery module further comprises a supporting unit;

the supporting unit is arranged between the battery cell unit and the protecting unit and is used for supporting and fixing the protecting unit.

Optionally, the supporting unit includes at least two brackets, each bracket corresponds to one of the battery cell groups.

Optionally, the battery module further comprises a first double-sided adhesive tape;

the first double faced adhesive tape is arranged between the supporting unit and the battery cell unit and used for fixedly bonding the supporting unit and the battery cell unit.

Optionally, the first double-sided adhesive at least partially covers the gap and is adhered to the surface of the cell unit having the tab.

Optionally, the battery module further comprises a second double-sided adhesive tape;

the second double faced adhesive tape is arranged between the supporting unit and the protecting unit and is used for fixedly bonding the supporting unit and the protecting unit.

The utility model also discloses electronic equipment, which comprises any one of the battery modules.

Compared with the prior art, the battery module and the electronic equipment have the following advantages:

in the packaging process of the battery module, as the battery cell unit is provided with the shell, the bare battery cell can be directly placed in the accommodating cavity of the shell for fixing, and the protection unit and the battery cell unit are bonded and fixed through the first adhesive tape after fixing. Meanwhile, the reduction of the quantity of the gummed paper can also slow down the degree of adverse conditions such as warping and wrinkling of the gummed paper, and reduce the consumption of gummed paper resources, so that the packaging quality of the battery module is improved, and the packaging cost is saved.

Compared with the prior art, the electronic equipment has the same or similar advantages as the battery module, and the description is omitted herein.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 is a structural exploded view of a battery module according to the present embodiment;

fig. 2 is a schematic view showing the appearance of a battery module according to the present embodiment;

fig. 3 is a schematic view of fig. 2 as seen in direction a.

Reference numerals illustrate:

the battery comprises a 1-battery cell unit, a 11-battery cell group, 12-electrode lugs, 13-first surfaces, 14-gaps, 15-second surfaces, 2-protection units, 21-connectors, 3-first gummed paper, 4-second gummed paper, 5-support units, 6-first double-sided adhesive tape and 7-second double-sided adhesive tape.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present utility model may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

It should be appreciated that reference throughout this specification to "one embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present utility model. Thus, the appearances of the phrase "in one embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

The battery module and the electronic device provided by the utility model are described in detail below by listing specific embodiments.

Referring to fig. 1 to 3, an embodiment of the present utility model provides a battery module including a battery cell unit 1, a protection unit 2, and a first adhesive paper 3; the battery cell unit 1 comprises a shell with at least two independent accommodating cavities and bare battery cells arranged in the accommodating cavities, wherein each accommodating cavity is internally provided with one bare battery cell to form a battery cell group 11; one side of the battery cell unit 1 is provided with a tab 12 corresponding to the bare battery cell, and the protection unit 2 is arranged on one side of the battery cell unit 1 provided with the tab 12 and is connected with the tab 12; the first adhesive tape 3 wraps the protection unit 2 and is adhered to the first surface 13 and the second surface 15 of the battery cell unit 1, and the first surface 13 and the second surface 15 are two surfaces opposite to the battery cell unit 1.

Specifically, the battery module includes electric core unit 1, protection element 2 and first gummed paper 3, electric core unit 1 is including having two at least independent casings that hold the chamber and arranging the naked electric core that holds the intracavity in, arbitrary materials such as shell steel, aluminum hull, plastic case can be selected for use to the casing, the hardness of steel hull is better, the density is great, impact toughness is better, the density of aluminum hull is slightly less than the steel hull, but the heat conduction ability is better, weight is lighter, more do benefit to production and processing, the whole weight of plastic case is lighter, the processing cost is lower, the insulating nature is good, the type of casing can be freely selected to the person skilled in the art combining the actual demand, do not limit this embodiment. In addition, the shell is processed through processes such as injection molding and stamping to form at least two accommodating cavities, so that the sizes of the cavities of each accommodating cavity are the same, a bare cell is placed in each accommodating cavity to form a cell group 11, and as shown in fig. 1, the battery module comprises two cell groups 11, and the two cell groups 11 are identical in shape and specification.

As shown in fig. 1, one side of the battery cell unit 1 is provided with a tab 12 corresponding to a bare battery cell, each bare battery cell comprises two tabs 12, namely a positive tab and a negative tab, and the bare battery cell can be electrically connected with an external unit through the positive tab and the negative tab, so that the charge and discharge functions of the battery cell unit 1 are realized. The protection unit 2 is arranged on one side of the battery cell unit 1, which is provided with the tab 12, and is connected with the tab 12, the protection unit 2 is a PCM (Protection Circuit Module, battery protection board) essentially, and the PCM is mainly used for protecting a battery module, and generally has four functions of overcharge protection, overdischarge protection, overcurrent protection and reverse connection protection, so that the battery module can continuously perform normal charge and discharge functions. The protection unit 2 is electrically connected with the electrode lugs 12, and the protection unit 2 can play a better role in protecting the battery cell unit 1 in the process of charging and discharging the external electric equipment through the electrode lugs 12 by the battery cell unit 1, so that the battery cell unit 1 maintains a relatively stable charging and discharging rate. The first adhesive paper 3 coats the protection unit 2 and is respectively adhered to the first surface 13 and the second surface 15 of the battery cell unit 1, as shown in fig. 3, the first surface 13 and the second surface 15 are two opposite surfaces of the battery cell unit 1, so that the protection unit 2 and the battery cell unit 1 can be reliably fixed through the first adhesive paper 3, and the phenomenon that the battery module is short-circuited due to loosening of the protection unit 2 and the battery cell unit 1 is avoided. The bonding area between the first adhesive tape 3 and the first surface 13 and the second surface 15 can be set according to the dimension specification of the battery cell unit 1, if the dimension specification of the battery cell unit 1 is larger, the bonding area between the first adhesive tape 3 and the first surface 13 and the second surface 15 should be correspondingly larger so as to ensure a reliable bonding and fixing relationship, and if the dimension specification of the battery cell unit 1 is smaller, the bonding area between the first adhesive tape 3 and the first surface 13 and the second surface 15 can be correspondingly smaller so as to save the material of the first adhesive tape 3 and control the packaging cost of the battery module.

In the packaging process of the battery module, as the battery cell unit 1 is provided with the shell, the bare cell can be directly placed in the accommodating cavity of the shell for fixing, and the protection unit 2 and the battery cell unit 1 are bonded and fixed through the first adhesive paper 3 after fixing. Meanwhile, the reduction of the quantity of the gummed paper can also slow down the degree of adverse conditions such as warping and wrinkling of the gummed paper, and reduce the consumption of gummed paper resources, so that the packaging quality of the battery module is improved, and the packaging cost is saved.

Optionally, referring to fig. 1 and 2, the protection unit 2 is provided with a connector 21, and the connector 21 is bent to protrude from the surface of the first adhesive tape 3 in a direction away from the battery cell 1.

Specifically, as shown in fig. 1 and 2, the protection unit 2 is provided with a connector 21, the connector 21 is essentially a flexible circuit board, and the flexible circuit board is a circuit board made of a flexible copper-clad plate as a base material, and is applied to an electronic product as a medium for signal transmission, and has the characteristics of high wiring assembly density, good flexibility, light weight, flexible process and the like. The connector 21 is bent to be relatively protruded out of the surface of the first gummed paper 3 along the direction away from the battery cell unit 1, so that a part which is electrically connected with external electric equipment is provided for the battery cell unit 1, and the battery cell unit 1 is connected with the external electric equipment through the connector 21, so that the charging and discharging functions of the battery cell unit 1 are realized.

Optionally, the number of connectors 21 is at least two.

Specifically, the number of the connectors 21 is usually two to increase the current output rate of the battery cell 1. If the number of the battery cells 1 is greater, the number of the connectors 21 may be correspondingly increased, but the number of the connectors 21 is increased, which may lead to more complex routing inside the protection unit 2, more difficult processing and higher cost, so that those skilled in the art may comprehensively consider the number of the battery cells 1 and the processing cost of the protection unit 2, and reasonably set the number of the connectors 21, which is not limited in this embodiment.

Optionally, referring to fig. 1 to 3, the battery module further includes a second gummed paper 4; a gap 14 is formed between two adjacent cell groups 11 so that the first surface 13 of the cell unit 1 is in a discontinuous structure; the second gummed paper 4 at least partially covers the gap 14 and is glued to the first surface 13.

Specifically, as shown in fig. 1, the battery cell unit 1 includes at least two battery cell groups 11, a gap 14 is formed between two adjacent battery cell groups 11, fig. 3 shows a schematic view of the battery module as viewed along the a direction, and as can be seen from fig. 3, the existence of the gap 14 makes the first surface 13 of the battery cell unit 1 take a discontinuous structure, and as the housing of the battery cell unit 1 takes an integral structure, the second surface 15 opposite to the first surface 13 can be directly processed into an integral structure during the processing process, so as to ensure the integral structural rigidity of the battery cell unit 1. The first surface 13 is in a discontinuous structure, so that the second gummed paper 4 is adhered to the first surface 13, so that the second gummed paper 4 at least partially covers the gap 14, the reliability of the first surface 13 is enhanced, and the cell unit is prevented from being bent and broken. It should be noted that, the second adhesive tape 4 of the present embodiment and the first adhesive tape 3 of the foregoing embodiment need to be made of high temperature resistant adhesive tape, such as teflon high temperature adhesive tape, polyimide adhesive tape, high temperature masking tape, resin green high temperature adhesive tape, etc., so as to avoid melting of the adhesive tape caused by heat generated during the charging and discharging process of the battery cell.

Optionally, referring to fig. 1, the battery module further includes a support unit 5; the supporting unit 5 is disposed between the battery cell unit 1 and the protection unit 2, and is used for supporting and fixing the protection unit 2.

Specifically, as shown in fig. 1, the battery module further includes a supporting unit 5, where the supporting unit 5 is disposed between the battery cell unit 1 and the protecting unit 2, and is mainly used for supporting and fixing the protecting unit 2, and meanwhile, the supporting unit 5 must also have a better insulation performance, so as to avoid a short circuit phenomenon between the battery cell unit 1 and the protecting unit 2. In a preferred embodiment, the support unit 5 may be a plastic bracket, which has a certain elasticity, so as to reduce the influence of the processing error between the battery cell unit 1 and the protection unit 2, thereby fixing the protection unit 2 more effectively. Meanwhile, the plastic bracket has better insulating property, lighter weight and lower processing cost, can effectively avoid the phenomenon of short circuit between the battery cell unit 1 and the protection unit 2, can lighten the overall weight of the battery module to a certain extent, and saves the processing cost of the battery module.

Optionally, referring to fig. 1, the supporting unit 5 includes at least two holders, each holder corresponding to one of the battery cell groups 11.

Specifically, the support unit 5 adopts a split structure, and comprises at least two brackets, each bracket corresponds to the battery cell group 11 of one battery cell unit 1, and the support unit 5 with the split structure is convenient to process and can avoid the phenomena of bending and breaking due to overlong length.

Optionally, referring to fig. 1, the battery module further includes a first double sided adhesive tape 6; the first double faced adhesive tape 6 is disposed between the supporting unit 5 and the battery cell unit 1, and is used for adhesively fixing the supporting unit 5 and the battery cell unit 1.

Specifically, the battery module further comprises a first double sided adhesive tape 6, wherein the first double sided adhesive tape 6 is arranged between the supporting unit 5 and the battery cell unit 1 and used for fixedly adhering the supporting unit 5 and the battery cell unit 1, and the double sided adhesive tape can be used for realizing reliable adhesion and fixation between the supporting unit 5 and the battery cell unit 1 and realizing insulation between the supporting unit 5 and the battery cell unit 1, so that a short circuit phenomenon is avoided. Of course, the double faced adhesive tape has a simple structure and is convenient to install, and the process difficulty of the battery module can be effectively reduced.

Optionally, the first double-sided adhesive tape 6 at least partially covers the gap 14 and adheres to the surface of the cell unit 1 having the tab 12.

Specifically, the first double-sided adhesive tape 6 at least partially covers the gap 14 between two adjacent battery cell groups 11 and is adhered to the surface of the battery cell unit 1 on the side with the tab 12, so that the fixing effect on the first surface 13 can be further enhanced on the basis of the second adhesive tape 4, and the overall stability of the battery module is improved.

Optionally, referring to fig. 1, the battery module further includes a second double sided tape 7; the second double faced adhesive tape 7 is disposed between the supporting unit 5 and the protecting unit 2, and is used for adhesively fixing the supporting unit 5 and the protecting unit 2.

Specifically, the battery module further comprises a second double sided adhesive tape 7, wherein the second double sided adhesive tape 7 is arranged between the supporting unit 5 and the protecting unit 2 and is used for fixedly adhering the supporting unit 5 and the protecting unit 2, and similarly, the double sided adhesive tape can be used for reliably adhering and fixing the supporting unit 5 and the protecting unit 2 and insulating the supporting unit 5 and the protecting unit 2, so that the short circuit phenomenon is avoided. In order to further save the packaging cost of the battery module, the second double-sided adhesive tape 7 and the first double-sided adhesive tape 6 can be made of the same type of double-sided adhesive tape by cutting according to actual needs.

The utility model also provides electronic equipment comprising the battery module.

Specifically, the electronic device may be any type of device including a power battery pack of a battery module, a charge/discharge apparatus, a battery detection apparatus, etc., and the battery module in the electronic device adopts the battery module described in the foregoing embodiment, so as to simplify a process of packaging the electronic device, reduce time consumption and difficulty, improve quality in the electronic device to a certain extent, save processing materials of the electronic device, and save processing cost.

Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or terminal device comprising the element.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (10)

1. The battery module is characterized by comprising a battery cell unit (1), a protection unit (2) and first gummed paper (3);

the battery cell unit (1) comprises a shell with at least two independent accommodating cavities and bare battery cells arranged in the accommodating cavities, wherein each accommodating cavity is internally provided with one bare battery cell to form a battery cell group (11);

one side of the battery cell unit (1) is provided with a tab (12) corresponding to the bare battery cell, and the protection unit (2) is arranged on one side of the battery cell unit (1) with the tab (12) and is connected with the tab (12);

the first gummed paper (3) coats the protection unit (2) and is respectively adhered to a first surface (13) and a second surface (15) of the battery cell unit (1), and the first surface (13) and the second surface (15) are two surfaces opposite to the battery cell unit (1).

2. The battery module according to claim 1, wherein the protection unit (2) is provided with a connector (21), and the connector (21) is bent to protrude relatively from the surface of the first adhesive paper (3) in a direction away from the battery cell unit (1).

3. The battery module according to claim 2, wherein the number of connectors (21) is at least two.

4. The battery module according to claim 1, further comprising a second sticker (4);

a gap (14) is formed between two adjacent cell groups (11) so that the first surface (13) of the cell unit (1) is in an intermittent structure;

the second gummed paper (4) at least partially covers the gap (14) and is glued to the first surface (13).

5. The battery module according to claim 4, further comprising a support unit (5);

the supporting unit (5) is arranged between the battery cell unit (1) and the protection unit (2) and is used for supporting and fixing the protection unit (2).

6. The battery module according to claim 5, characterized in that the supporting unit (5) comprises at least two brackets, each of which corresponds to one of the cell groups (11).

7. The battery module according to claim 5, further comprising a first double-sided adhesive (6);

the first double-sided adhesive tape (6) is arranged between the supporting unit (5) and the battery cell unit (1) and is used for fixedly bonding the supporting unit (5) and the battery cell unit (1).

8. The battery module according to claim 7, characterized in that the first double-sided adhesive tape (6) at least partially covers the gap (14) and adheres to the surface of the cell unit (1) having the tab (12).

9. The battery module according to claim 5, further comprising a second double-sided adhesive (7);

the second double-sided adhesive tape (7) is arranged between the supporting unit (5) and the protecting unit (2) and is used for fixedly bonding the supporting unit (5) and the protecting unit (2).

10. An electronic device comprising the battery module according to any one of claims 1 to 9.