CN211957754U

CN211957754U - Battery module and battery holder thereof

Info

Publication number: CN211957754U
Application number: CN202020920758.8U
Authority: CN
Inventors: 王星; 聂庆武
Original assignee: Luoyang Chaote Power Technology Co ltd
Current assignee: Luoyang Chaote Power Technology Co ltd
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2020-11-17
Anticipated expiration: 2030-05-27

Abstract

The utility model relates to a battery module and battery holder thereof. The battery module comprises a battery holder which is a hollow frame; one side of the battery holder in the left and right directions is provided with a battery mounting groove or the left and right sides are respectively provided with a battery mounting groove, the battery mounting groove is used for enclosing a battery cavity with the battery mounting groove on the adjacent battery holder, and the battery cavity is used for placing a battery monomer; a partition plate is arranged at the bottom of the battery mounting groove, the length direction of the partition plate is consistent with the front-back direction, and the front-back direction is simultaneously vertical to the left-right direction and the up-down direction; the middle part of the battery mounting groove in the up-down direction is provided with the clapboard for supporting the highest bulging position in the middle part of the battery monomer in the up-down direction in the battery mounting groove. When the battery module carries out high-power discharge, restrict the free bulging of battery, prevent that the bulging is excessive and make the battery damage, improve the cycle life of battery.

Description

Battery module and battery holder thereof

Technical Field

The utility model relates to a battery module and battery holder thereof.

Background

Among the current square shell battery, the main mode of uniting is that the mould sinking spare piles up in groups, and this kind of mode of uniting is to pile up about a plurality of battery holders and arranges, and the left and right sides of battery holder is equipped with the battery mounting groove respectively, and the battery mounting groove on two adjacent battery holders encloses into a battery chamber jointly when the battery is in groups, and the battery chamber is used for placing battery monomer. In consideration of the heat dissipation problem, the battery holder has a general frame structure, the middle part of the battery holder is a large-area hollow structure so as to keep a gap between two adjacent single batteries, and the front side surface and the rear side surface of the battery holder are provided with vent holes so as to ensure the heat dissipation effect.

Chinese patent for CN209001086U provides an air-cooled lithium battery module as an authorization notice number, this battery module has a plurality of fixed bolster, the fixed bolster is frame construction, the middle part of fixed bolster is equipped with two baffles, the baffle left and right sides forms the battery installing zone and is used for installing the battery, two ventilation holes have been seted up on the face of both ends around the fixed bolster, the baffle of setting makes to have the clearance between the side of two adjacent batteries in order to form the ventiduct, the ventilation hole corresponds the intercommunication with the ventiduct, realize the battery heat dissipation.

However, the battery case may bulge during the high-power discharge of the battery module, and the cycle life of the battery may be reduced due to excessive bulging.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery holder, which solves the problem that the cycle life of the battery is reduced because the battery in the battery module in the prior art is easy to be heated and expanded; the utility model provides a battery module to the battery of solving among the prior art battery module is heated the bulging easily, leads to the problem that the cycle life of battery reduces.

The utility model discloses a battery module's battery holder adopts following technical scheme:

the battery holder of the battery module is a hollow frame;

the stacking direction of the battery holders when the battery module is formed is taken as the left-right direction, the height direction of the battery holders is taken as the up-down direction, one side of the left-right direction of each battery holder is provided with a battery mounting groove or the left side and the right side of each battery holder are respectively provided with a battery mounting groove, the battery mounting grooves are used for enclosing a battery cavity with the battery mounting grooves on the adjacent battery holders, and the battery cavities are used for placing battery monomers;

a partition plate is arranged at the bottom of the battery mounting groove, the length direction of the partition plate is consistent with the front-back direction, and the front-back direction is simultaneously vertical to the left-right direction and the up-down direction;

the middle part of the battery mounting groove in the up-down direction is provided with the clapboard for supporting the highest bulging position in the middle part of the battery monomer in the up-down direction in the battery mounting groove.

Has the advantages that: be equipped with the battery mounting groove on the battery holder, the tank bottom of battery mounting groove is equipped with the baffle, and when battery monomer installed in the battery mounting groove that corresponds, the baffle can play the supporting role to the free middle part of battery like this, when the battery module carries out high-power discharge, restricts the free bulging of battery, prevents that the bulging is excessive and make the battery damage, improves the cycle life of battery.

Furthermore, the battery holder is provided with a front side plate and a rear side plate, wherein the front side plate and the rear side plate are provided with vent holes, and the vent holes and the partition plate are staggered up and down.

Has the advantages that: the battery module is at high-power discharge in-process, and the heat that the battery produced is higher, sets up the ventilation hole on the battery holder, can dispel the heat to the battery, and the ventilation hole staggers from top to bottom with the baffle moreover for the ventilation hole can with the space intercommunication of both sides about the baffle, improve the radiating effect.

Furthermore, two ventilation holes are formed in one side of the battery holder and are respectively located on the upper side and the lower side of the partition plate.

Has the advantages that: the upper side and the lower side of the partition plate are respectively provided with the vent holes, so that the space is fully utilized, and the heat dissipation effect is improved.

Further, only one partition plate is provided.

Has the advantages that: the gaps on the upper side and the lower side of the partition plate are increased, ventilation and heat dissipation are facilitated, and the manufacturing cost is saved.

Furthermore, the side surfaces of the battery retainer in the front-back direction are provided with packing belt limiting grooves which are arranged at intervals from top to bottom, and the ventilation holes are formed between the packing belt limiting grooves on the upper side and the lower side.

Has the advantages that: set up the packing area spacing groove on the battery holder to be adapted to and fix the mode in groups with the packing area, the ventilation hole is established between the packing area spacing groove, on the one hand the arrangement space on the rational utilization battery holder, on the one hand make the fixed effect in packing area better.

Furthermore, an upper supporting beam and a lower supporting beam are arranged on the battery holder, extend along the front-back direction and are arranged at the upper side and the lower side of the partition board at intervals;

the front end and the rear end of the upper supporting beam and the lower supporting beam are provided with reinforcing parts, and the reinforcing parts are connected with side plates of the battery retainer in the front-rear direction;

the projection of the reinforcing part and the packing belt limiting groove in the front-back direction is provided with an overlapping part.

Has the advantages that: the upper supporting beam and the lower supporting beam are arranged on the battery holder, the battery holder can be reinforced, the strength is improved, the reinforcing part and the projection of the packing belt limiting groove in the front-back direction have an overlapping part, and the reinforcing part and the projection of the packing belt limiting groove in the front-back direction can be correspondingly supported to the position compressed by the packing belt, so that the battery holder is prevented from being deformed due to overlarge stress.

Further, the reinforcing portion extends in the up-down direction, and the main body portions of the upper and lower support beams and the reinforcing portion are arranged in an L-shape.

Has the advantages that: the manufacture is convenient, and the increase of the gap at the upper side and the lower side of the clapboard is facilitated.

The utility model discloses a battery module adopts following technical scheme:

a battery module, comprising:

a battery cell;

the battery holder is used for placing the battery monomer;

the battery holder is a hollow frame;

Further, only one partition plate is provided.

Drawings

Fig. 1 is a schematic structural view of a battery module according to the present invention;

FIG. 2 is a schematic structural view of an intermediate frame of the present invention;

fig. 3 is a schematic structural view of the end bracket of the present invention.

The names of the components corresponding to the corresponding reference numerals in the drawings are:

1-a top cover unit, 2-bolts, 3-a module output copper bar, 4-a module series-parallel copper bar, 5-a left end support, 6-a middle support, 7-a left end plate, 8-a battery cell, 9-a packing belt, 10-a safety valve avoidance port, 11-a pole avoidance port, 12-an upper packing belt limiting groove, 13-a lower packing belt limiting groove, 14-a first upper support beam, 15-a first lower support beam, 16-a first partition plate, 17-a first upper reinforcement portion, 18-a first lower reinforcement portion, 19-a first vent hole, 20-a second upper support beam, 21-a second lower support beam, 22-a second partition plate, 23-a second upper reinforcement portion, 24-a second lower reinforcement portion, 25-a second vent hole, 26-a first battery mounting groove, 27-second battery mounting groove, 28-right end support, 29-right end plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, may be 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. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus 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 apparatus. Without further limitation, elements recited by the phrase "comprising an … …" do not exclude the inclusion of such elements in processes or methods.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used 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; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.

The present invention will be described in further detail with reference to examples.

The utility model discloses an embodiment 1 of battery module:

as shown in fig. 1, the battery module includes a plurality of battery cells 8, a plurality of intermediate brackets 6 stacked together, and end brackets provided with ends, the end brackets including a left end bracket 5 and a right end bracket 28.

The middle support 6, the left end support 5 and the right end support 28 are all battery holders, and the battery holders are used for placing the battery monomers 8.

The battery module further comprises a left end plate 7 and a right end plate 29 for supporting and reinforcing the battery holder.

To more clearly illustrate the present embodiment, the stacking direction of the middle brackets 6 in fig. 1 is the left-right direction of the battery module, the height direction of the battery cells 8 is the up-down direction of the battery module, and the width direction of the battery module is the front-back direction.

The leftmost side of the middle bracket 6 is provided with a left end bracket 5 and a left end plate 7, and the rightmost side of the middle bracket 6 is provided with a right end bracket 28 and a right end plate 29. The packing belt 9 fixes the middle support 6, the left end support 5, the left end plate 7, the right end support 28 and the right end plate 29 together. The module output copper bar 3 and the module series-parallel copper bar 4 are fixed on the pole of each battery monomer 8 through the bolts 2 and are used for being connected with an external conductor.

The battery module further comprises a plurality of top cover units 1, each top cover unit 1 is connected to the corresponding middle support 6, the left end support 5 and the right end support 28 in a clamping mode, and each top cover unit 1 jointly forms a top cover for covering the battery module to form protection.

As shown in fig. 1 and 2, the intermediate brackets 6 have the same shape and size, the intermediate brackets 6 are hollow frames, square notches are formed in the middle portions of the left side and the right side of each intermediate bracket 6 to form first battery mounting grooves 26, the first battery mounting grooves 26 on the sides, close to each other, of the two adjacent intermediate brackets 6 are arranged in opposite directions, and the two first battery mounting grooves 26 arranged in opposite directions enclose a battery cavity together for placing the battery cells 8.

The top of middle support 6 is equipped with utmost point post and dodges mouth 11 and relief valve and dodge mouth 10 for dodge utmost point post and the relief valve on the battery monomer 8.

The upper and lower sides of the middle support 6 are respectively provided with a first upper support beam 14 and a first lower support beam 15, the first upper support beam 14 and the first lower support beam 15 are of flat plate structures and extend along the front-back direction, the plate thickness direction is consistent with the left-right direction, and the front end and the rear end of the first upper support beam 14 and the front end and the rear end of the first lower support beam 15 are respectively connected with the front side and the rear side of the middle support 6. The upper end of the first upper support beam 14 is connected to the top of the middle support 6, and the lower end of the first lower support beam 15 is connected to the bottom of the middle support 6.

The first upper support beam 14 has first upper reinforcing portions 17 at both front and rear ends thereof, and the first upper reinforcing portions 17 extend downward and are arranged in an L-shape with the first upper support beam 14. The first lower support beam 15 has first lower reinforcing portions 18 at both front and rear ends thereof, and the first lower reinforcing portions 18 extend upward in an L-shaped arrangement with the first lower support beam 15. The first upper reinforcement portion 17 and the first lower reinforcement portion 18 allow the first upper support beam 14 and the first lower support beam 15 to have a larger contact portion with the side portion of the intermediate bracket 6, improving the structural strength of the intermediate bracket 6.

In the front-rear direction, the intermediate bracket 6 has a front side plate and a rear side plate, a first partition plate 16 is provided at a position intermediate the intermediate bracket 6 in the up-down direction, and the first partition plate 16 is in the form of a bar extending in the front-rear direction and spanning between the front side plate and the rear side plate of the intermediate bracket 6. First upper supporting beam 14, first lower supporting beam 15 interval sets up the upper and lower both sides at first baffle 16, and the thickness of first middle supporting beam 16 and first upper supporting beam 14, first lower supporting beam 15 is the same, so that when making in the first battery mounting groove 26 of battery monomer 8 installation, have the clearance between two adjacent battery monomer 8's the opposite flank, so that conveniently dispel the heat, and first baffle 16 can form the support to battery monomer 8's middle part, prevent that battery monomer 8 from being heated the tympanites at high-power discharge in-process.

Two first ventilation holes 19 are further formed in the two side faces of the middle support 6 in the front-back direction, and two first ventilation holes 19 are formed in each side face and are located in the upper side and the lower side of the first partition plate 16 respectively. The first ventilation hole 19 is a long hole, and the length direction of the first ventilation hole is consistent with the up-down direction, so that when the single battery 8 is installed in the first battery installation groove 26, the first ventilation hole 19 is communicated with the gap between the opposite side surfaces of the two adjacent single batteries 8, and ventilation and heat dissipation are guaranteed.

As shown in fig. 1 and 3, the left end bracket 5 and the right end bracket 28 have the same shape and size, and the left end bracket 5 will be described as an example in this embodiment.

The left end support 5 is a hollow frame, a square notch is formed in the middle of the right side of the left end support 5 and used for forming a second battery installation groove 27, the second battery installation groove 27 and the first battery installation groove 26 are arranged oppositely and jointly form a battery cavity in a surrounding mode, and the battery cavity is used for placing a battery monomer 8.

The top of the left end support 5 is provided with a pole avoiding opening 11 and a safety valve avoiding opening 10 for avoiding the pole and the safety valve on the single battery 8.

The upper and lower sides of the left end bracket 5 are respectively provided with a second upper supporting beam 20 and a second lower supporting beam 21, the second upper supporting beam 20 and the second lower supporting beam 21 are of plate-shaped structures and extend along the front-rear direction, the plate thickness direction is consistent with the left-right direction, and the front and rear ends of the second upper supporting beam 20 and the second lower supporting beam 21 are respectively connected with the front and rear sides of the left end bracket 5. The upper end of the second upper support beam 20 is connected to the top of the left end bracket 5, and the lower end of the second lower support beam 21 is connected to the bottom of the left end bracket 5. The second upper support beam 20 has second upper reinforcing portions 23 at front and rear ends thereof, the second upper reinforcing portions 23 extending downward, and the second lower support beam 21 has second lower reinforcing portions 24 at front and rear ends thereof, the second lower reinforcing portions 24 extending upward. The second upper reinforcement portion 23 and the second lower reinforcement portion 24 allow the second upper support beam 20 and the second lower support beam 21 to have a larger contact portion with the side portion of the left end bracket 5, improving the structural strength of the left end bracket 5.

The left end bracket 5 has a front plate and a rear plate in the front-rear direction, a second partition plate 22 is provided at a position in the middle of the left end bracket 5 in the vertical direction, and the second partition plate 22 is in the form of a bar extending in the front-rear direction across between the front and rear sides of the left end bracket 5. Support beam 20 on the second, support beam 21 interval sets up the upper and lower both sides at second baffle 22 under the second, and support beam 20 on the thickness of second baffle 22 and the second, support beam 21's thickness is the same under the second, in order to make in the battery monomer 8 installation second battery mounting groove 27, the clearance has between the relative side of battery monomer 8 and left end plate 7, in order to make things convenient for the heat dissipation, and second baffle 22 can form the support to battery monomer 8's middle part, prevent that battery monomer 8 from being heated the bloated in high-power discharge process.

Two second ventilation holes 25 are further formed in the two side faces of the left end portion support 5 in the front-back direction, and two second ventilation holes 25 are formed in each side face and are located in the upper side and the lower side of the second partition plate 22 respectively. The second vent hole 25 is a long hole, and the length direction of the second vent hole corresponds to the vertical direction of the second partition plate 22, so that when the single battery 8 is installed in the second battery installation groove 27, the second vent hole 25 communicates with the gap between the single battery 8 and the opposite side surface of the left end plate 7, so as to ensure ventilation and heat dissipation.

As shown in fig. 1, 2 and 3, the left end support 5, the middle support 6 and the right end support 29 are respectively provided with an upper packing belt limiting groove 12 and a lower packing belt limiting groove 13 on the front and rear side surfaces thereof, the upper packing belt limiting groove 12 and the lower packing belt limiting groove 13 are arranged on the side surfaces thereof at intervals, the upper packing belt limiting grooves 12 are in one-to-one correspondence with each other in the left-right direction, and the lower packing belt limiting grooves 13 are in one-to-one correspondence with each other in the left-right direction, so that the packing belts 9 can be clamped therein.

The first upper reinforcing part 17 and the second upper reinforcing part 23 respectively overlap with the corresponding upper packing belt limiting groove 12 in the front-rear direction, and the first lower reinforcing part 18 and the second lower reinforcing part 24 respectively overlap with the corresponding lower packing belt limiting groove 13 in the front-rear direction, so that the part of the packing belt 9 pressed on the middle bracket 6 is supported, the strength is improved, and the deformation caused by excessive stress is prevented.

During assembly, the single batteries 8 are placed in the first battery mounting groove 26 and the second battery mounting groove 27, and then the left end plate 7, the left end support 5, the middle support 6, the right end support 28 and the right end plate 29 are sequentially stacked and fixed together through the packing belt 9. The module output copper bar 3 and the module series-parallel copper bar 4 are fixed on the pole of each battery monomer 8 through the bolts 2 and are used for being connected with an external conductor. Each top cover unit 1 is correspondingly clamped and matched with the left end support 5, the middle support 6 and the right end support 28 respectively so as to protect the battery module. Like this, first baffle 16, second baffle 22 form the support to the middle part of battery monomer 8, and the clearance between first ventilation hole 19 and the adjacent battery monomer 8 side link up, and second ventilation hole 25 intercommunication battery monomer 8 and left end board 7, the clearance between the relative side of right-hand member board 29 form the wind channel like this, improve the radiating effect, and in the high-power discharge process of battery, form the support to the middle part of battery monomer 8 to prevent that battery monomer 8 from being heated and bulging, improve the cycle life of battery.

The utility model provides a battery module's embodiment 2:

the difference between this embodiment and embodiment 1 is that two ventilation holes are formed in one side of the middle bracket in the front-rear direction in embodiment 1 to perform ventilation and heat dissipation, but in this embodiment, the battery module has low heat dissipation requirements, and one ventilation hole is formed in one side of the middle bracket in the front-rear direction to meet the heat dissipation requirements.

The utility model provides a battery module's embodiment 3:

the difference between this embodiment and embodiment 1 lies in that the middle support in embodiment 1 passes through the packing area to be fixed together, is equipped with the packing area spacing groove on the side of middle support to supply the packing area to clamp, and in this embodiment, battery module includes outside frame, be equipped with two around the outside frame, extend along controlling the direction, it is fixed through outside frame and end plate after the middle support stacks, at this moment, need not set up the packing area spacing groove on the support of middle part, corresponding also need not set up the rib, the ventilation hole can set up ground bigger moreover.

The utility model provides an embodiment 4 of battery module:

the present embodiment is different from embodiment 1 in that the first reinforcing portion and the second reinforcing portion in embodiment 1 extend in the vertical direction and are respectively arranged in an L-shape with the main body portion and the reinforcing portion of the upper supporting beam and the lower supporting beam to improve the structural strength of the battery holder, and in this embodiment, the first reinforcing portion and the second reinforcing portion are triangular and are disposed at the included angle between the side plate of the battery holder and the upper supporting beam and the lower supporting beam to improve the structural strength of the battery holder.

The utility model provides a battery module's battery holder's embodiment 1:

the battery holder of the battery module in this embodiment is the same as the intermediate holder structure described in embodiments 1 to 4 of the battery module, and is not described herein again.

The utility model provides a battery module's battery holder's embodiment 2:

the battery holder of the battery module in this embodiment is the same as the end bracket structure described in embodiments 1 to 4 of the battery module described above, and will not be described herein again.

Finally, it should be noted that the above mentioned embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made without inventive effort to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The battery holder of the battery module is a hollow frame;

the method is characterized in that:

2. The battery holder according to claim 1, wherein the battery holder has a front side plate and a rear side plate, the front side plate and the rear side plate being provided with vent holes, the vent holes being offset up and down from the partition plate.

3. The battery holder according to claim 2, wherein the two vent holes are provided at one side of the battery holder, respectively at upper and lower sides of the partition plate.

4. The battery holder according to any one of claims 1 to 3, wherein the separator is provided with only one strip.

5. The battery holder according to any one of claims 1 to 3, wherein a packing band limiting groove is provided on a side surface of the battery holder in a front-rear direction, the packing band limiting groove is arranged at an interval from top to bottom, and the vent hole is provided between the packing band limiting grooves on both upper and lower sides.

6. The battery holder according to claim 5, wherein the battery holder is provided with an upper support beam and a lower support beam, the upper support beam and the lower support beam extend in the front-rear direction and are arranged at the upper and lower sides of the partition plate at intervals;

7. The battery holder according to claim 6, wherein the reinforcement portion extends in an up-down direction, and the body portions of the upper and lower support beams are arranged in an L-shape with the reinforcement portion.

8. A battery module, comprising:

a battery cell;

the battery holder is used for placing the battery monomer;

characterized in that the battery holder is a battery holder according to any one of claims 1 to 7.