CN217656040U

CN217656040U - Battery module and energy storage equipment

Info

Publication number: CN217656040U
Application number: CN202221670465.4U
Authority: CN
Inventors: 陈永; 葛有为; 李卫华
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-10-25
Anticipated expiration: 2032-06-29

Abstract

The utility model discloses a battery module and energy storage equipment. The battery module comprises a busbar support, a busbar, an FPC, a first reinforcing plate, heat-conducting silica gel and a temperature sensor, wherein a low-voltage connector is arranged at one end of the busbar support, and a temperature-measuring avoiding hole is formed in the busbar support; the bus bar is arranged on the bus bar bracket; the FPC is arranged on the bus bar bracket and is electrically connected with the bus bar and the low-voltage connector; the first reinforcing plate is arranged on the busbar support and is arranged corresponding to the temperature measurement avoiding hole, and an observation hole and a temperature sensing through hole are formed in the first reinforcing plate; the heat-conducting silica gel is arranged on the surface of the battery core and is in contact with the first reinforcing plate through the temperature-measuring avoiding hole; the temperature sensor is arranged in the temperature sensing through hole, and the temperature sensor is in contact with the heat-conducting silica gel and is connected with the FPC. This battery module has little, the beneficial effect such as risk of tearing of low pressure connector department FPC when can reduce the module inflation of collection error to electric core temperature.

Description

Battery module and energy storage equipment

Technical Field

The utility model belongs to the battery field particularly, relates to battery module and energy storage equipment.

Background

The technology of the new energy power battery is rapidly developed under the carbon neutralization situation, the wide application of the FPC (flexible printed circuit) in the grouped battery core sampling assembly not only improves the space utilization rate of the battery pack, but also increases the energy density of the battery pack, and compared with an aluminum wire bonding mode, the failure rate under the wet-heat cycle and the vibration working condition is reduced. At present, most of temperature sensing sampling of the battery core is integrated in a nickel sheet for realizing the electrical connection of a bus bar and a circuit board, and the actual temperature of the battery core is indirectly expressed by acquiring the temperature of the bus bar, so that the acquired temperature value is different from the actual temperature of the battery core. Along with the whole improvement of battery energy density, the module technology of uniting has had requirements such as can dismantle, the installation is simple to the sampling assembly, therefore FPC and support fixed form also become electric core group assembly process's hot spot direction gradually. In addition, because the blade battery is in groups relatively single in shape after establishing ties in groups, the low pressure connector often through rivet and stiffening plate directly fixed module end plate on, when the module thermal energy, the relative movement of module end plate can directly pull the FPC main part, makes plug-in components department FPC atress, has certain hidden danger.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, an object of the utility model is to provide a battery module and energy storage equipment to reach effects such as the direct atress of FPC that reduces battery module temperature acquisition error, low pressure connector department when preventing the battery module inflation.

In one aspect of the present invention, the utility model provides a battery module. According to the utility model discloses an embodiment, this battery module includes:

the bus bar support is provided with a temperature measuring avoidance hole;

the bus bar is arranged on the bus bar bracket;

the flexible circuit board is arranged on the bus bar bracket and is electrically connected with the bus bar and the low-voltage connector;

the first reinforcing plate is arranged on the busbar support and is arranged corresponding to the temperature measurement avoidance hole, and an observation hole and a temperature sensing through hole are formed in the first reinforcing plate;

the heat-conducting silica gel is arranged on the surface of the battery cell and is in contact with the first reinforcing plate through the temperature measurement avoidance hole;

and the temperature sensor is arranged in the temperature sensing through hole, and the temperature sensor is in contact with the heat-conducting silica gel and is connected with the flexible circuit board.

Further, the output electrode of the busbar is connected with the pole in a compounding way through the section; and/or the low-voltage connector is indirectly connected with the module end plate through a welding assembly.

Further, the battery module satisfies at least one of the following conditions: the low-voltage connector is fixedly connected with the welding assembly through a second reinforcing plate and a second riveting piece; the welding assembly is a rigid assembly or a deformable assembly; the welding assembly is an elastic assembly.

Furthermore, a first bending part is arranged on the bus bar; and/or one side of the flexible circuit board, which is close to the low-voltage connector, is provided with a second bending part, and the bending direction of the second bending part faces the bus bar support.

Furthermore, the second bending part is groove-shaped, the opening direction of the groove is far away from the bus bar support, a second bending part avoiding area and a horizontal baffle are arranged on the bus bar support, the horizontal baffle is positioned in the groove and is flush with the surface of the flexible circuit board, and the horizontal baffle is not in contact with the inner bottom surface of the groove; and/or foam is arranged between the second bending part and the second bending part avoiding area.

Furthermore, the distance between the horizontal baffle and the inner bottom surface of the groove is 2-3 mm.

Furthermore, a busbar limiting piece is arranged on the busbar support, and the busbar is fixedly connected with the busbar support through the limiting piece and the first riveting piece.

Further, be equipped with a plurality of louvres on the busbar support, the louvre corresponds with the explosion-proof valve of electric core and arranges.

Further, the thickness of the heat-conducting silica gel is 1-3 mm.

Compared with the prior art, the battery module at least has the following beneficial effects: 1. the utility model discloses in can make temperature sensor record the temperature of electric core through heat conduction silica gel and electric core contact, not only the temperature acquisition error is littleer, can also avoid temperature sensor direct fish tail that can cause with electric core surface contact to puncture the problem of electric core even. For the temperature that comes indirect acquisition electric core through the nickel piece measurement busbar, because busbar and electric core itself just have certain difference in temperature, and the overcurrent current size also can influence the factors such as temperature of busbar, lead to regarding the busbar temperature as electric core temperature has the problem that the error is big, the reliability is low, the utility model discloses in with heat conduction silica gel directly attached in electric core surface, not only can play certain buffer protection effect, can also reduce the contact distance on temperature sensor and electric core body surface, the temperature value of surveying from this is more accurate, can show reduction temperature acquisition error. 2. The setting up of first stiffening plate not only can be used for placing temperature sensor, plays certain protection and limiting displacement to temperature sensor, can also come indirect fixed heat conduction silica gel through its fixed with the busbar support, in addition, can also be equipped with the temperature measurement on the busbar support and dodge the region in hole and play local reinforcing effect, moreover, can also judge through the state of observing downthehole heat conduction silica gel whether to combine closely with electric core.

In another aspect of the present invention, the utility model provides an energy storage device. According to the utility model discloses an embodiment, this energy storage equipment includes the utility model discloses the battery module of above-mentioned embodiment. All the features and effects described for the above battery module are also applicable to the energy storage device, and are not described in detail herein. In general, the energy storage device has higher safety and better reliability.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view of a partial structure of a battery module according to an embodiment of the present invention.

Fig. 2 is a schematic end structure view of a battery module according to an embodiment of the present invention.

Fig. 3 is a schematic view of a partial structure of a first reinforcing plate of a battery module according to an embodiment of the present invention when the first reinforcing plate is not mounted.

Fig. 4 is a schematic view of a partial structure of a battery module after a first reinforcing plate is installed according to an embodiment of the present invention.

Fig. 5 is a schematic view of the back structure of fig. 4 according to the present invention.

Wherein:

10-a busbar support; 11-temperature measurement avoiding hole; 12-a horizontal baffle; 13-busbar limiters; 14-heat dissipation holes; 20-a low voltage connector; 21-a second stiffening plate 21; 22-a second rivet; 30-welding the assembly; 40-a busbar; 41-a first bend; 42-a first rivet; 50-a flexible circuit board; 51-a second bend; 52-temperature cantilever arm; 53-nickel plate; 60-a first stiffening plate; 61-a viewing port; 62-temperature sensitive through holes; 63-fixing holes; 70-heat conducting silica gel; 80-a temperature sensor; 90-module end plates.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary intended for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "width", "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In one aspect of the present invention, the utility model provides a battery module. According to the embodiment of the utility model, as shown with reference to fig. 1-5, this battery module includes: the bus bar support 10, the bus bar 40, the flexible circuit board 50, the first reinforcing plate 60, the heat conductive silicone rubber 70 and the temperature sensor 80. Wherein, one end of the bus bar support 10 is provided with a low-voltage connector 20, and the bus bar support 10 is provided with a temperature measurement avoiding hole 11; the bus bar 40 is provided on the bus bar holder 10; the flexible circuit board 50 is disposed on the bus bar support 10, and the flexible circuit board 50 is electrically connected with the bus bar 40 and the low voltage connector 20; the first reinforcing plate 60 is arranged on the busbar support 10 and corresponds to the temperature measurement avoiding hole 11, and an observation hole 61 and a temperature sensing through hole 62 are formed in the first reinforcing plate 60; the heat-conducting silica gel 70 is arranged on the surface of the battery core and is in contact with the first reinforcing plate 60 through the temperature-measuring avoiding hole 11; the temperature sensor 80 is arranged in the temperature sensing through hole 62, and the temperature sensor 80 is in contact with the heat-conducting silica gel 70 and is connected with the flexible circuit board 50. This battery module has little, the beneficial effect such as risk of tearing of low pressure connector department FPC when can reduce the module inflation of collection error to electric core temperature.

The battery module according to the above embodiment of the present invention will be described in detail with reference to fig. 1 to 5.

According to the embodiment of the present invention, as can be understood by referring to fig. 1 and fig. 3 to 5, when measuring the temperature of the battery cell, the heat conductive silica gel 70 can be attached to the surface of the battery cell body, and the first reinforcing plate 60 is fixed on the bus bar support 10, so that the heat conductive silica gel 70 contacts with the first reinforcing plate 60 through the temperature measurement avoiding hole 11 on the bus bar support 10, and the heat conductive silica gel 70 is extruded to some extent by fixing the first reinforcing plate 60 and the bus bar support 10, thereby ensuring the close attachment between the heat conductive silica gel 70 and the battery cell; whether silica gel bulges exist in the holes can be observed through the observation holes 61 in the first reinforcing plate 60, and whether the heat-conducting silica gel 70 is tightly attached to the battery cell is further judged; the temperature sensor 80 is arranged in the temperature sensing through hole 62, and the temperature of the battery core is indirectly measured through the heat conduction silica gel. For the temperature that obtains electric core indirectly through the temperature of nickel piece measurement busbar, because busbar and electric core itself just have certain difference in temperature, and overcurrent current size can influence factors such as the temperature of busbar, lead to regarding busbar temperature as electric core temperature and have the error big, the problem that the reliability is low, the utility model discloses in with heat conduction silica gel direct attach in electric core surface, utilize temperature sensor to measure electric core surface temperature through heat conduction silica gel, not only can utilize heat conduction silica gel's elasticity to play certain buffering guard action, avoid temperature sensor fish tail to puncture electric core surface even, can also shorten the temperature measurement interval on temperature sensor and electric core body surface, make the temperature value of surveying more accurate from this, can show reduction temperature acquisition error. In addition, the first reinforcing plate 60 can be used for placing a temperature sensor, plays a certain role in protecting and limiting the temperature sensor, and can also be used for indirectly fixing the heat-conducting silica gel through the fixation of the first reinforcing plate and the bus bar support; in addition, the local reinforcing effect can be achieved on the area of the busbar support, which is provided with the temperature measurement avoidance hole; moreover, whether the heat conduction silica gel is tightly combined with the battery cell can be judged by observing the state of the heat conduction silica gel in the hole.

According to the specific embodiment of the present invention, it can be understood with reference to fig. 3 that the first reinforcing plate 60 may further have a pair of fixing holes 63, for example, so that the first reinforcing plate and the bus bar bracket can be fixed through the fixing holes, for example, the first reinforcing plate and the bus bar bracket can be fixed through the fixing holes by screws or rivets. In addition, as can be understood by referring to fig. 4 and 5, a temperature suspension arm 52 may also be disposed on the flexible circuit board 50, and the flexible circuit board 50 may be connected to the temperature sensor 80 through the temperature suspension arm 52, specifically, one end of the temperature suspension arm 52 may be disposed between the heat conductive silicone rubber 70 and the first reinforcing plate 60 to achieve connection with the temperature sensor 80. It is understood that the specific type of the temperature sensor 80 is not particularly limited, and those skilled in the art can flexibly select the type according to actual needs, such as aluminum sheet. Further, as understood with reference to fig. 1, the flexible circuit board 50 may achieve its electrical connection with the bus bar 40 through the nickel plate 53.

According to the utility model discloses an embodiment, busbar 40's output pole and utmost point post can pass through the cross-section complex and link to each other. Most of the existing bus bars are aluminum sheets, copper pole columns are adopted for the pole columns (the pole columns are usually assembled and fixed with the positive and negative poles of the module in a bolt fixing mode, the problem that the aluminum pole columns are soft in material and have temperature rise in the using process of the module is solved, the aluminum pole columns can cause corrosion and reaming and moment attenuation of bolts), the copper pole columns and the bus bars are fixed in a lamination welding mode at present, namely, the copper pole columns and the bus bars are fixed in a vertical welding mode (height difference exists between the upper surface and the lower surface), but the vertical welding mode can increase the height space of the module, and space waste in a PACK package is caused. The utility model discloses in through the output utmost point that makes the busbar and utmost point post link to each other through the cross-section is compound to replace the welding, even the tangent plane of output level is compound with the tangent plane contact of utmost point post, makes the compound face be individual layer structure on the whole, can further practice thrift the high space of module, solves and reduces the problem that output utmost point copper aluminium welding occupy the module space big.

According to the utility model discloses, refer to fig. 2 and understand, low pressure connector 20 can link to each other with module end plate 90 indirectly through welding assembly 30, and is indirectly continuous with the module end plate through making the low pressure connector pass through welding assembly, can also utilize welding assembly to play certain cushioning effect, is located the FPC's of low pressure connector department direct atress when reducing the module inflation, reduces FPC's the risk of tearing.

According to the utility model discloses a specific embodiment, combine fig. 1 and fig. 2 to understand, low pressure connector 20 can be fixed continuous with welding assembly 30 through second stiffening plate 21 and second riveting 22, can make low pressure connector can not rock when connecting the pencil from this, also can absorb certain module inflation volume simultaneously. It is to be understood that the thickness of the second reinforcing plate and the diameter of the second rivet member are not particularly limited, and those skilled in the art can flexibly select the thickness and the diameter according to actual needs.

According to the utility model discloses a concrete embodiment, welding assembly 30 can be rigid assembly or deformable subassembly, and the preferred subassembly that can be for can deforming, like elastic component etc. can further improve the expanded buffering effect to the module as welding assembly through chooseing for use elastic component, reduces the atress of the flexible circuit board of low pressure connector department, and then the tearing risk that brings for FPC when reducing the module inflation.

According to the utility model discloses an embodiment, refer to fig. 1 and understand, can be equipped with first portion of bending 41 on the busbar 40, through set up the portion of bending on the busbar, can alleviate the dilatational strain of electric core in the module. It can be understood that the bending depth and the bending width of the first bending portion 41 are not particularly limited, and those skilled in the art can flexibly select the first bending portion according to actual needs as long as the cell expansion deformation can be buffered and the normal assembly of the battery module is not affected, for example, the bending depth may be not less than 2mm, the bending width may be not less than 3mm, and the like, where the expansion deformation of the cells in the module can be effectively alleviated by controlling the bending size.

According to an embodiment of the present invention, as understood with reference to fig. 1 or fig. 2, one side of the flexible circuit board 50 adjacent to the low voltage connector 20 may be provided with a second bending portion 51, and a bending direction of the second bending portion 51 may be toward the bus bar bracket 10. When the battery module inflation, receive module end plate relative movement's influence, the regional atress that FPC and low pressure connector are connected is bigger with the risk that takes place to tear, through set up the portion of bending in one side that FPC is close to low pressure connector, absorption inflation volume that can be better, the risk of tearing that brings for FPC when reducing the module inflation.

According to the specific embodiment of the utility model, the shape of bending of second bending portion 51 is not restricted by special limitation, as long as do not influence module assembly and electrical property can, for example, refer to fig. 1 or fig. 2 and understand, second bending portion 51 can be recess shape, like V font recess etc., busbar support 10 can be kept away from to the opening direction of recess, it dodges district (not shown) and horizontal baffle 12 to be equipped with the second bending portion on the busbar support 10, horizontal baffle 12 can be located the recess and flush with flexible circuit board 50's surface, horizontal baffle 12 and the interior bottom surface contactless of recess, through adopting above-mentioned recess shape bending structure and cooperation horizontal baffle, not only can reduce the tearing risk that FPC brought when the module inflation, to taking place the warpage to the direction of keeping away from the busbar support when can also avoiding bending portion probably to take place to kick-back, guarantee that flexible circuit board's major structure is the horizontality, avoid producing adverse effect to the electrical property of module. Further, the interval between the bottom surface can be 2 ~ 3mm in horizontal baffle 12 and the recess, for example can be 2mm, 2.5mm or 3mm etc, the inventor discovers, if this interval undersize, the buffering effect of its production is not obvious, and if this interval is too big, is unfavorable for the normal assembly of module again, the utility model discloses in be above-mentioned scope through the interval between control horizontal baffle and the recess internal surface, can reach the expanded effect of better buffering module on the basis that does not influence the normal assembly structure of module.

According to the utility model discloses a specific embodiment, the second bending 51 and the second bending dodge and to be equipped with the bubble cotton (not shown) between the district, for example can paste the bubble cotton and establish on one side of second bending towards the busbar support, can prevent from rubbing impaired when FPC is direct and busbar support contact from this.

According to the embodiment of the present invention, referring to fig. 1 or fig. 3, it can be understood that a busbar limiting member 13 may be further disposed on the busbar support 10, and the busbar 40 may be fixedly connected to the busbar support 10 through the limiting member 13 and the first riveting member 42. The bus bar limiting piece is arranged on the bus bar support, and the bus bar can be limited and fixed by the aid of the body structure of the bus bar support, so that the bus bar and the bus bar are conveniently and fixedly connected. It is understood that the specific type of the busbar limiting member 13 is not particularly limited, and those skilled in the art can flexibly select the type according to actual needs, such as a snap, etc., wherein the busbar limiting member 13 can also be integrally formed with the busbar bracket 10.

According to the utility model discloses an embodiment, refer to fig. 1 or fig. 3 to understand, can also be equipped with a plurality of louvres 14 on the busbar support 10, louvre 14 can correspond with the explosion-proof valve of electric core and arrange, can form heat dissipation channel from this, is favorable to taking place the heat dissipation when thermal runaway.

According to the embodiment of the utility model, heat conduction silica gel 70's thickness can be 1 ~ 3mm, for example, can be 1.5mm, 2mm or 2.5mm etc, the inventor discovers, if heat conduction silica gel's thickness undersize, be difficult to ensure its guard action to electric core surface, can not effectively avoid temperature sensor to cause the problem that the fish tail punctures electric core even to electric core surface, and if heat conduction silica gel's thickness is too big, on the one hand can influence the normal assembly of module, on the other hand still can increase the temperature measurement error, reduce the accuracy of the electric core temperature who records. The utility model discloses in be above-mentioned thickness scope through control heat conduction silica gel, both can play better guard action to electric core surface, can also guarantee the accuracy of temperature measurement result, make the temperature value that records more be close with electric core temperature.

According to the utility model discloses an in this battery module, electric core can be ordinary electric core or blade electricity core. In addition, it can be understood that the specification and size of the selected battery cell are not particularly limited, and those skilled in the art may flexibly select the battery cell according to actual needs, for example, square-shaped battery cells such as L3 to L6 may be used. In addition, can also understand that, can link to each other through end plate between the module between two adjacent battery module, and can also cross-over connection same copper bar between two adjacent battery module. In the battery module, the number of the bus bar, the first reinforcing plate, the temperature sensor, the heat-conducting silica gel and the like is not particularly limited, and a person skilled in the art can flexibly select the bus bar, the first reinforcing plate, the temperature sensor, the heat-conducting silica gel and the like according to actual conditions.

Compared with the prior art, the battery module can have the following beneficial effects: 1. the utility model discloses in can make temperature sensor measure the temperature of electric core through heat conduction silica gel and electric core contact, not only temperature acquisition error is littleer from this, can also avoid the direct fish tail that can cause with electric core surface contact of temperature sensor to puncture the problem of electric core even. 2. The arrangement of the first reinforcing plate can not only protect and limit the temperature sensor to a certain extent, but also indirectly fix the heat-conducting silica gel through the fixation of the first reinforcing plate and the bus bar bracket; in addition, the local reinforcing effect can be achieved on the area of the busbar support, which is provided with the temperature measurement avoidance hole; moreover, whether the heat conduction silica gel is tightly combined with the battery cell can be judged by observing the state of the heat conduction silica gel in the hole. 3. Make the low pressure connector pass through welding assembly and module end plate and link to each other indirectly, can utilize welding assembly to play certain cushioning effect, lie in the direct atress of the FPC of low pressure connector department when reducing the module inflation, reduce FPC's the risk of tearing. 4. Bending parts can be formed on the bus bars to relieve the expansion deformation of the battery cells; 5. a bending part can be arranged on one side of the flexible circuit board, which is close to the low-voltage connector, the bending part is used for absorbing the expansion amount, the tearing risk brought to the FPC when the module is expanded is reduced, and meanwhile, a horizontal baffle which is flush with the surface of the flexible circuit board can be arranged on the bending part to avoid the flexible circuit board from warping in the direction far away from the bus bar support; 6. a deformable component (such as an elastic component) can be selected as a welding component so as to further reduce the tearing risk brought to the FPC when the module expands; 7. the bus bar output pole and the pole are connected in a composite cross section mode to replace welding connection, the problem that the output pole is large in module space occupied by copper and aluminum welding is solved, and therefore the height space of the module can be further saved.

In another aspect of the present invention, the utility model provides an energy storage device. According to the utility model discloses an embodiment, this energy storage equipment includes the utility model discloses the battery module of above-mentioned embodiment. All the features and effects described for the above battery module are also applicable to the energy storage device, and are not described in detail herein. In general, the energy storage device has higher safety and better reliability. It should be noted that the type of the energy storage device is not particularly limited, and those skilled in the art can flexibly select the type according to actual needs, for example, the type may be a battery pack or a power utilization or supply device such as a vehicle with a battery pack. In addition, the battery pack may include one battery module or a plurality of battery modules, and the plurality of battery modules may be connected in series and/or in parallel.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A battery module, comprising:

the device comprises a busbar support, a low-voltage connector and a temperature measurement avoidance hole, wherein one end of the busbar support is provided with the low-voltage connector;

the bus bar is arranged on the bus bar bracket;

and the temperature sensor is arranged in the temperature sensing through hole, and the temperature sensor is in contact with the heat conduction silica gel and is connected with the flexible circuit board.

2. The battery module according to claim 1, wherein the output pole and the pole of the busbar are compositely connected through the cross section; and/or the presence of a gas in the gas,

the low voltage connector is indirectly connected to the module end plate by a weld assembly.

3. The battery module according to claim 2, wherein at least one of the following conditions is satisfied:

the low-voltage connector is fixedly connected with the welding assembly through a second reinforcing plate and a second riveting piece;

the welding assembly is a rigid assembly or a deformable assembly;

the welding assembly is an elastic assembly.

4. The battery module according to claim 1 or 3, wherein the bus bar is provided with a first bending portion; and/or one side of the flexible circuit board, which is close to the low-voltage connector, is provided with a second bending part, and the bending direction of the second bending part faces the bus bar support.

5. The battery module as set forth in claim 4, wherein the second bending portion is groove-shaped, the opening of the groove is far away from the bus bar support, the bus bar support is provided with a second bending portion avoiding region and a horizontal baffle, the horizontal baffle is positioned in the groove and is flush with the surface of the flexible circuit board, and the horizontal baffle is not in contact with the inner bottom surface of the groove; and/or the presence of a gas in the gas,

and foam is arranged between the second bending part and the avoiding area of the second bending part.

6. The battery module according to claim 5, wherein the distance between the horizontal baffle and the inner bottom surface of the groove is 2-3 mm.

7. The battery module according to claim 1 or 6, wherein a busbar limiting member is disposed on the busbar holder, and the busbar is fixedly connected to the busbar holder through the limiting member and the first riveting member.

8. The battery module according to claim 1 or 6, wherein the busbar support is provided with a plurality of heat dissipation holes, and the heat dissipation holes are arranged corresponding to the explosion-proof valves of the cells.

9. The battery module according to claim 1 or 6, wherein the thickness of the thermally conductive silica gel is 1-3 mm.

10. An energy storage device, characterized by comprising the battery module according to any one of claims 1 to 9.