CN218300085U

CN218300085U - Integrated battery pack

Info

Publication number: CN218300085U
Application number: CN202222496580.0U
Authority: CN
Inventors: 王方
Original assignee: Shanghai Paizhi Energy Co ltd
Current assignee: Shanghai Paizhi Energy Co ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2023-01-13
Anticipated expiration: 2032-09-20

Abstract

The utility model discloses an integral type battery package, including casing, a plurality of heating panel and a plurality of electric core that has the inner chamber, the edge of a plurality of heating panels all with the interior wall connection of casing, and a plurality of heating panel intervals set up at the inner chamber of casing and be formed with a plurality of electric core heat dissipation chamber, at least one electric core sets up in electric core heat dissipation intracavity, and the laminating of at least one side and the heating panel of electric core. Firstly, each limit space can be provided with at least one battery cell, so that the number of the used heat dissipation plates can be reduced on the whole, the occupied space of the heat dissipation plates is reduced, the energy density of the battery is increased, and the manufacturing difficulty and the manufacturing cost are reduced; second, the utility model discloses a design of no module, and one-time machine-shaping, simple process is favorable to its industrial scale's production, and it is with high costs to have solved soft-packaged electric core PACK, and space utilization is not enough problem, and casing and the one-time machine-shaping of heating panel, simple process are favorable to its industrial scale's production.

Description

Integrated battery pack

Technical Field

The utility model relates to a battery correlation field, in particular to integral type battery package.

Background

Along with the development of new forms of energy technique, the battery technology has also obtained long-term development, and laminate polymer battery indicates that the shell is laminate polymer material's battery, because laminate polymer battery core structure is softer, is difficult for fixing, and laminate polymer battery core's fastening, series connection are the difficult point that laminate polymer battery core group is integrated.

For example, chinese utility model patent with publication number CN210200820U discloses an electricity core does not have modularization fixed knot structure, battery system and vehicle, including the backup pad that a plurality of intervals set up, be used for two end plates and the ribbon of fixed support board, two adjacent backup pads form installation space in order to fix the centre gripping of electricity core, still set up a plurality of round holes on the end plate in order to dispel the heat.

However, the battery cell non-modular fixed structure can be used as a product only by other subsequent processes, the whole realization process is complex, the production efficiency is restricted by the process, and the production cost cannot be well controlled. In addition, laminate polymer battery is because concentrating fixedly, is difficult for the heat dissipation, even if adopt a plurality of round hole designs in the above-mentioned patent, also can only dispel the heat to laminate polymer battery's outside, and its inside high temperature is concentrated, and the radiating effect is poor.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to concentrate the defect that leads to its radiating effect poor in order to overcome among the prior art electric core PACK technology complicacy, the degree of difficulty height and electric core.

The utility model provides a solve above-mentioned technical problem, provide an integral type battery package.

The utility model provides a technical scheme that above-mentioned technical problem adopted is: integral type battery package, including casing, a plurality of heating panel and a plurality of electric core that has the inner chamber, a plurality of the edge of heating panel all with the interior wall connection of casing, and a plurality of the heating panel interval sets up the inner chamber of casing is formed with a plurality of electric core heat dissipation chamber, at least one electric core set up in the electric core heat dissipation intracavity, just the side of electric core with the heating panel laminating.

In the scheme, the plurality of heat dissipation plates are arranged in the inner cavity of the shell at intervals, the battery core is arranged in the battery core heat dissipation cavity between the heat dissipation plates, the side surface of each heat dissipation plate is abutted against the side surface of the battery core, and firstly, at least one battery core can be installed in each limiting space, so that the number of the heat dissipation plates used can be reduced overall, the occupied space of the heat dissipation plates is reduced, the energy density of a battery is increased, and the manufacturing difficulty and cost are reduced; second, the utility model discloses a design of no module, and one-time machine-shaping, simple process is favorable to its industrial scale's production, and it is with high costs to have solved soft-packaged electrical core PACK, and space utilization is not enough problems, and soft-packaged electrical core CTP technique is than traditional electric core to module to PACK technique, and battery package spare part reduces 30%, and the cost is practiced thrift about 20%, and production efficiency promotes 35%, and battery package volume utilization has improved 15% -20%; the third, a plurality of cooling plate edges are connected with shells inner wall, and the cooling plate is from the inside absorptive heat of a plurality of electric cores and direct transmission to expose on external casing, accelerates the radiating efficiency greatly, avoids leading to being difficult to radiating problem because electric core is concentrated, need not to set up other cooling system, can satisfy the heat dissipation requirement, and simple structure and security are high.

Preferably, the plurality of heat dissipation plates and the housing are integrally formed.

In this scheme, heating panel and casing integrated into one piece can avoid because heating panel and casing junction have the clearance, lead to the heat to concentrate at casing inner chamber part, consequently, this scheme heat conduction effect is better.

Preferably, the single sheet or the two sheets of the battery cell are arranged in the battery cell heat dissipation cavity, and at least one side surface of the battery cell is attached to the heat dissipation plate.

In the scheme, the single battery cell is arranged in the battery cell heat dissipation cavity, the two side surfaces of the battery cell are both attached to the heat dissipation plate, the heat dissipation area is increased, and the heat dissipation effect is improved; two electric cores set up in electric core heat dissipation chamber, have guaranteed that each electric core all has a side and has laminated with the heating panel, reduce the quantity of fin quantity in order to improve the electric core installation, under guaranteeing certain radiating effect, increase battery energy density.

Preferably, the material of the heat dissipation plate and/or the housing is aluminum.

In the scheme, when the heat dissipation plate and the shell are both made of aluminum, the aluminum material has good heat conductivity and the strength is higher than that of a common plastic part, so that the heat dissipation effect and the structural strength of the device can be greatly improved; one side of the heat dissipation plate or the shell is made of aluminum, so that the weight of the device can be greatly reduced under the condition of ensuring certain heat dissipation capacity.

Preferably, the integrated battery pack comprises an upper support and a lower support which are symmetrically arranged in the inner cavity of the housing, the plurality of battery cores are located between the upper support and the lower support, and the upper support and the lower support are connected to two ends of the battery cores.

In this scheme, upper bracket and lower carriage use together, and a plurality of electric cores in the middle of the fixed cooperate the use of heating panel, restrict electric core completely in the casing inner chamber, avoid electric core to rock in the casing inner chamber.

Preferably, the upper bracket and the lower bracket are provided with a plurality of polar ear grooves, the polar ear grooves correspond to the battery cells one to one, the two ends of the battery cells are provided with heat sealing edges and polar ears, the polar ears at the two ends of the battery cells penetrate through the polar ear grooves, and the heat sealing edges are abutted to one sides of the polar ear grooves.

In this scheme, the utmost point ear groove on the support is passed to the utmost point ear of electricity core, and convenient follow-up further welding operation is carried out to utmost point ear, and the heat-seal limit is supported one side in utmost point ear groove avoids utmost point ear further through utmost point ear groove, plays the effect that restriction utmost point ear extension length.

Preferably, a plurality of limiting bodies distributed at intervals are arranged on the opposite inner sides of the upper support and the lower support, and two adjacent limiting bodies abut against two sides of the battery cell.

In this scheme, two adjacent spacing bodies support and lean on the both sides of electricity core tip to restriction electricity core is in electric core heat dissipation chamber activity.

Preferably, the integrated battery pack includes a plurality of busbars, the busbars are respectively installed on the upper bracket and the lower bracket, the busbars correspond to the battery cells one to one, each busbar has a detection hole, and a temperature detection device is arranged in the detection hole.

In this scheme, the temperature-detecting device in the busbar is used for detecting the stability of every electric core to avoid because of electric core high temperature, the condition that leads to electric core to burn out takes place.

Preferably, the upper support and the lower support are provided with a plurality of limiting protrusions, every two limiting protrusions form a limiting space, and two ends of the busbar are clamped in the limiting space.

In this scheme, the both ends of a busbar are blocked to per two spacing bellying, make things convenient for the installation of busbar, make things convenient for batch production.

Preferably, the plurality of limiting protrusions are arc-shaped plates, arc-shaped heads matched with the arc-shaped plates are arranged at two ends of the bus bar, and the arc-shaped heads are matched in the arc-shaped plates to limit the bus bar.

Preferably, the integrated battery pack comprises an upper cover and a lower cover, and the upper cover and the lower cover are detachably mounted at two ends of the shell to close the inner cavity of the shell.

In this scheme, the inner chamber of casing is sealed to upper cover and lower cover for dustproof and waterproof avoids inside electric core to expose outside.

On the basis of meeting the common knowledge in the field, the above preferred conditions can be combined at will to obtain the preferred embodiments of the present invention.

The utility model discloses an actively advance the effect and lie in: the plurality of the heat dissipation plates are arranged in the inner cavity of the shell at intervals, the battery cell is arranged in the battery cell heat dissipation cavity between the heat dissipation plates, the side surface of each heat dissipation plate is abutted against the side surface of the battery cell, and firstly, at least one battery cell can be arranged in each limiting space, so that the number of the heat dissipation plates can be reduced on the whole, the occupied space of the heat dissipation plates is reduced, the energy density of a battery is increased, and the manufacturing difficulty and the manufacturing cost are reduced; second, the utility model discloses a design of no module, and one-time machine-shaping, simple process is favorable to its industrial scale's production, and it is with high costs to have solved soft-packaged electrical core PACK, and space utilization is not enough problems, and soft-packaged electrical core CTP technique is than traditional electric core to module to PACK technique, and battery package spare part reduces 30%, and the cost is practiced thrift about 20%, and production efficiency promotes 35%, and battery package volume utilization has improved 15% -20%; third, a plurality of cooling plate edges and shells inner wall are connected, and the heating panel is from the inside absorptive heat of a plurality of electric cores and direct transmission to expose on external casing for the radiating efficiency greatly, avoid leading to being difficult to radiating problem because electric core concentrates, need not to set up other cooling system, can satisfy the heat dissipation requirement, and simple structure and security are high.

Drawings

Fig. 1 shows an embodiment of the housing of the present invention.

Fig. 2 is a longitudinal sectional view of fig. 1.

Fig. 3 is the utility model discloses the casing is used for the structure decomposition sketch map of electric core.

Fig. 4 is an enlarged schematic view of the structure of the lower cover in fig. 3.

FIG. 5 is an enlarged view of the upper bracket of FIG. 3

Fig. 6 is a schematic diagram of the back structure of fig. 5.

Fig. 7 is a schematic structural diagram of the battery cell in fig. 3.

Fig. 8 is a schematic structural view of the bus bar.

Description of reference numerals:

housing 10

Inner cavity 11

Heat sink plate 12

Battery cell 13

Battery core heat dissipation cavity 14

Upper support 15

Lower support 16

Lug groove 17

Tab 18

Stopper body 19

Bus bar 20

Detection hole 21

Temperature detection device 22

Limit lug 23

Spacing space 24

Upper cover 25

Lower cover 26

Mounting through hole 27

Threaded hole 28

Shroud 29

Screw 30

Limiting plate body 31

Detailed Description

The present invention will be more clearly and completely described below by way of examples and with reference to the accompanying drawings, but the present invention is not limited thereto.

Fig. 1-8 show that the utility model relates to an integral type battery package embodiment, including casing 10, a plurality of heating panel 12 and a plurality of electric core 13 that have inner chamber 11, the edge of a plurality of heating panel 12 all with the interior wall connection of casing 10, and a plurality of heating panel 12 interval sets up at the inner chamber 11 of casing 10 and is formed with a plurality of electric core heat dissipation chamber 14, and at least one electric core 13 sets up in electric core heat dissipation chamber 14, and at least one side and the heating panel 12 laminating of electric core 13.

In this example, the battery cell 13 is disposed in the battery cell heat dissipation cavity 14 between the heat dissipation plates 12, the side of the heat dissipation plate 12 abuts against the side of the battery cell 13, and first, at least one battery cell 13 can be installed in each limit space 24, so that the number of the heat dissipation plates 12 used can be reduced overall, the occupied space of the heat dissipation plates 12 is reduced, the energy density of the battery is increased, and the manufacturing difficulty and cost are reduced. Second, the utility model discloses a design of no module, and one-time machine-shaping, simple process is favorable to its industrial scale's production, and it is with high costs to have solved soft-packaged electrical core PACK, and space utilization is not enough problems, and soft-packaged electrical core CTP technique is than traditional electric core to module to PACK technique, and battery package spare part reduces 30%, and the cost is practiced thrift about 20%, and production efficiency promotes 35%, and battery package volume utilization has improved 15% -20%; thirdly, the edges of the plurality of heat dissipation plates 12 are connected with the inner wall of the shell 10, and the heat dissipation plates 12 absorb heat from the inside of the plurality of battery cells 13 and directly transmit the heat to the shell 10 exposed outside, so that the heat dissipation efficiency is greatly improved, and the problem that the battery cells 13 are difficult to dissipate heat in a centralized mode is avoided.

Preferably, the plurality of heat dissipation plates 12 are integrally formed with the case 10.

In this example, the heat dissipation plate 12 and the housing 10 are integrally formed, so that the heat can be prevented from being locally concentrated in the inner cavity 11 of the housing 10 due to the gap existing at the joint of the heat dissipation plate 12 and the housing 10, and therefore, the heat conduction effect of the scheme is better.

In other embodiments, the inner cavity 11 of the housing 10 has a groove, the heat dissipation plate 12 has a protrusion matching with the groove, and the heat dissipation plate 12 is clamped on the inner wall of the housing 10 by the protrusion; specifically, the groove is a dovetail groove, and it should be noted that the structure of the groove is not only the dovetail groove.

In other embodiments, as shown in fig. 3, the cross section of the inner cavity 11 of the housing 10 is rectangular to adapt to the shape of the integrated flexible packaging core 13, and the plurality of heat dissipation plates 12 are distributed at intervals along the length direction of the rectangle.

Preferably, a single sheet or two sheets of battery cells 13 are disposed in the battery cell heat dissipation cavity 14, and at least one side surface of the battery cell 13 is attached to the heat dissipation plate 12.

In this example, the single battery cell 13 is disposed in the battery cell heat dissipation cavity 14, and both side surfaces of the battery cell 13 are attached to the heat dissipation plate 12, so that the heat dissipation area is increased, and the heat dissipation effect is improved; two electric cores 13 set up in electric core heat dissipation chamber 14, have guaranteed that each electric core 13 all has a side and the laminating of heating panel 12, reduce the quantity of fin quantity in order to improve electric core 13 installation, under guaranteeing certain radiating effect, increase battery energy density.

In other embodiments, the distance between two adjacent heat dissipation plates 12 is matched with the thickness of the single-piece or double-piece battery core 13, so that the single-piece or double-piece battery core 13 can be properly installed in the gap between two adjacent heat dissipation plates 12, and the adjacent heat dissipation plates 12 can clamp the battery core 13, thereby realizing the limiting effect on the single-piece or double-piece battery core 13.

Preferably, the material of the heat dissipation plate 12 and/or the housing 10 is aluminum.

In this embodiment, when the heat dissipation plate 12 and the housing 10 are made of aluminum, the aluminum material has good thermal conductivity and higher strength than a common plastic member, so that the heat dissipation effect and the structural strength of the device can be greatly increased; the weight of the device can be greatly reduced by selecting the aluminum material as the heat dissipation plate 12 or the housing 10 while ensuring a certain heat dissipation capability.

In other embodiments, part of the housing 10 is made of aluminum material, the aluminum material part of the housing 10 is directly connected to the internal heat sink 12, the aluminum material area of the housing 10 is designed according to actual needs, and the larger the aluminum material area of the housing 10 is, the stronger the heat dissipation capability is.

Preferably, as shown in fig. 3, the integrated battery pack includes an upper bracket 15 and a lower bracket 16 which are symmetrically arranged and mounted in the inner cavity 11 of the housing 10, the battery cells 13 are located between the upper bracket 15 and the lower bracket 16, and the upper bracket 15 and the lower bracket 16 are connected to two ends of the battery cells 13.

In this example, the upper bracket 15 and the lower bracket 16 are used together to fix a plurality of battery cells 13 in the middle, and the battery cells 13 are completely confined in the inner cavity 11 of the casing 10 by using the heat dissipation plate 12, so as to prevent the battery cells 13 from shaking in the inner cavity 11 of the casing 10.

As shown in fig. 5, specifically, the upper bracket 15 and the lower bracket 16 are both mounting plates capable of being embedded into the inner cavity 11 of the housing 10, the outer shape of the mounting plates is adapted to the inner cavity 11 of the housing 10, a plurality of limiting plate bodies 31 are vertically arranged at the edge of the mounting plates, and when the mounting plates are embedded into the inner cavity 11 of the housing 10, the limiting plate bodies 31 can be attached to the inner wall of the housing 10, so as to prevent the mounting plates from being inclined when being embedded into the inner cavity 11.

Preferably, the upper bracket 15 and the lower bracket 16 are both provided with a plurality of polar ear grooves 17, and the plurality of polar ear grooves 17 correspond to the plurality of battery cells 13 one to one, so that the polar ears 18 at the two ends of the battery cells 13 penetrate through the polar ear grooves 17.

In this example, the tip of electric core 13 has plastic-aluminum membrane, heat seal edge and utmost point ear 18 that connect gradually, and utmost point ear slot 17 on the support is passed earlier to utmost point ear 18 of electric core 13 to expose certain length, support until the heat seal limit and lean on the one side at utmost point ear slot 17, make things convenient for follow-up utmost point ear 18 to exposing by utmost point ear slot 17 to carry out welding operation, and utmost point ear slot 17 supports with the length that prescribed limit utmost point ear 18 stretched out with the heat seal limit mutually.

As shown in fig. 5, preferably, a plurality of spacing bodies 19 are disposed on opposite inner sides of the upper bracket 15 and the lower bracket 16, and two adjacent spacing bodies 19 abut against two sides of the electric core 13.

In this example, two adjacent limiting bodies 19 abut against two sides of the end portion of the battery cell 13 to limit the battery cell 13 from moving in the battery cell heat dissipation cavity 14.

In other embodiments, the limiting bodies 19 have tips near the ends of the battery cells 13, so that the ends of the battery cells 13 can be inserted between the limiting bodies 19.

In other embodiments, the limiting body 19 is a continuous strip, a plurality of limiting bodies 19 are arranged at intervals and are uniformly arranged, and a contact portion between the strip-shaped limiting body 19 and the battery cell 13 is a strip region, which can disperse a force applied to the battery cell 13 by the limiting body 19, and avoid a short circuit of the battery cell 13 due to an excessive concentrated force applied to a certain position of the battery cell 13.

In other embodiments, the limiting body 19 has elasticity, so that the limiting body 19 has a buffering effect, and when an external impact occurs, the battery cell 13 is prevented from being directly collided with the limiting body 19 to cause a short circuit of the battery cell 13.

As shown in fig. 8, preferably, the integrated battery pack includes a plurality of bus bars 20, the bus bars 20 are respectively mounted on the upper bracket 15 and the lower bracket 16, the bus bars 20 correspond to the battery cells 13 one to one, the bus bars 20 have detection holes 21, and a temperature detection device 22 is disposed in the detection holes 21.

In this example, the temperature detection device 22 in the bus bar 20 is used to detect the stability of each cell 13, so as to avoid the occurrence of the situation that the cell 13 is burnt due to the over-high temperature of the cell 13.

As shown in fig. 5, preferably, each of the upper bracket 15 and the lower bracket 16 is provided with a plurality of limiting protrusions 23, each two limiting protrusions 23 form a limiting space 24, and both ends of the bus bar 20 are clamped in the limiting spaces 24.

In this example, each two limiting protrusions 23 clamp two ends of one busbar 20, so that the installation of the busbars 20 is facilitated, and the mass production is facilitated.

In other embodiments, the bus bar 20 is a long strip plate with two ends having arc heads, the limiting protrusion is an arc plate, and the arc heads of the bus bar 20 are just clamped in the arc plate.

In other embodiments, the bus bar 20 is provided with a plurality of positioning holes, and the upper bracket 15 and the lower bracket 16 are provided with positioning protrusions, which can be inserted into the positioning holes to realize further accurate positioning.

As shown in fig. 3, preferably, the one-piece battery pack includes an upper cover 25 and a lower cover 26, and the upper cover 25 and the lower cover 26 are detachably mounted at both ends of the case 10 to close the inner cavity 11 of the case 10.

In this example, the upper cover 25 and the lower cover 26 close the inner cavity 11 of the housing 10 for dust and water prevention and prevent the internal battery cell 13 from being exposed.

In other embodiments, as shown in fig. 4, the upper cover 25 and the lower cover 26 have mounting through holes 27, the end of the opening of the inner cavity 11 of the housing 10 has threaded holes 28, the mounting through holes 27 correspond to the threaded holes 28 one by one, and the upper cover 25 and the lower cover 26 are fixed on the housing 10 by screws 30.

Preferably, the inner sides of the upper cover 25 and the lower cover 26 close to the electric core 13 are provided with raised enclosing plates 29, the side edges of the enclosing plates 29 are in contact with the inner wall of the casing 10 to play a guiding role, so as to ensure that the opening of the inner cavity 11 of the casing 10 is smoothly sealed by the cover body, and the end surfaces of the enclosing plates 29 are abutted against the outer sides of the upper support 15 or the lower support 16 far away from the electric core 13. With the upper cover 25 and the lower cover 26 locked on the housing 10, the upper and lower enclosing plates 29 press the upper bracket 15 and the lower bracket 16 inward, so that the battery cell 13 is fastened in the inner cavity 11 of the housing 10.

Preferably, the inner sides of the upper cover 25 and the lower cover 26 close to the battery cell 13 are provided with auxiliary positioning structures, and the auxiliary positioning structures are used for positioning and fixing the bracket and the battery cell.

Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments can be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims

1. An integral type battery package which characterized in that: including casing, a plurality of heating panel and a plurality of electric core that has the inner chamber, a plurality of the edge of heating panel all with the interior wall connection of casing, and a plurality of the heating panel interval sets up the inner chamber of casing is formed with a plurality of electric core heat dissipation chamber, at least one electric core set up in electric core heat dissipation intracavity, just at least one side of electric core with the heating panel laminating.

2. The unitary battery pack of claim 1, wherein: the plurality of the heat dissipation plates and the shell are integrally formed.

3. The unitary battery pack of claim 1, wherein: the material of the heat dissipation plate and/or the shell is aluminum.

4. The unitary battery pack of claim 1, wherein: the integrated battery pack comprises an upper support and a lower support which are symmetrically arranged in the inner cavity of the shell, the battery cores are located between the upper support and the lower support, and the upper support and the lower support are connected to two ends of the battery cores.

5. The unitary battery pack of claim 4, wherein: the upper bracket with the lower carriage has all been seted up a plurality of utmost point ear grooves, and is a plurality of utmost point ear groove and a plurality of electricity core one-to-one, the both ends of electricity core have hot banding and utmost point ear, utmost point ear passes utmost point ear groove, hot banding supports one side in utmost point ear groove.

6. The unitary battery pack of claim 4, wherein: the inner sides of the upper support and the lower support which are opposite to each other are provided with a plurality of limiting bodies which are distributed at intervals, and the two adjacent limiting bodies are abutted against the two sides of the battery cell.

7. The unitary battery pack of claim 4, wherein: the integrated battery pack comprises a plurality of busbars which are respectively arranged on the upper support and the lower support, the busbars are in one-to-one correspondence with the battery cores, the busbars are provided with detection holes, and temperature detection devices are arranged in the detection holes.

8. The unitary battery pack of claim 7, wherein: the upper bracket and the lower bracket are both provided with a plurality of limiting protrusions, every two limiting protrusions form a limiting space, and two ends of the busbar are clamped in the limiting spaces.

9. The unitary battery pack of claim 8, wherein: the limiting protruding portions are arc-shaped plates, arc-shaped heads matched with the arc-shaped plates are arranged at two ends of the bus bar, and the arc-shaped heads are matched in the arc-shaped plates to limit the bus bar.

10. The unitary battery pack of claim 1, wherein: the integrated battery pack comprises an upper cover and a lower cover, wherein the upper cover and the lower cover are detachably arranged at two ends of the shell to seal the inner cavity of the shell.