CN215644719U - Battery pack - Google Patents

Abstract

The utility model discloses a battery pack, which comprises: the lower shell is provided with a module space; the temperature control part is in a plate shape, is arranged on the lower shell to seal the module space, and is provided with a liquid inlet pipe and a liquid outlet pipe; the module, the module includes: the base and the electrical device are arranged on the side end plate of the base, an installation space is defined between the end face, far away from the side end plate, of the extension seat and the side end plate, the electrical device is arranged in the installation space, and the liquid inlet pipe and the liquid outlet pipe are arranged in the installation space. According to the utility model, the space utilization rate is improved by arranging the electric device in the installation space, and the energy density of the battery pack is further improved.

Description

Battery pack

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery pack.

Background

At present, the pole of the battery core inside the battery pack faces upwards, the cooling part is arranged below the battery core, the upper shell is arranged above the battery core, the overall structure of the battery pack is complex, the occupied space is large, the weight is large, and the energy density of the battery pack is influenced.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a battery pack, which reduces the whole volume of the battery pack and improves the energy density of the battery pack.

A battery pack according to an embodiment of the present invention includes: a lower housing provided with a module space; the temperature control part is in a plate shape, is arranged on the lower shell to seal the module space, and is provided with a liquid inlet pipe and a liquid outlet pipe; a module, the module comprising: base and electrical part, be equipped with the extension seat on the side end plate of base, the keeping away from of extension seat the side end plate the terminal surface with it has installation space to inject between the side end plate, the electrical part is established in the installation space, the feed liquor pipe with the drain pipe is established in the installation space.

According to the battery pack provided by the embodiment of the utility model, the liquid inlet pipe and the liquid outlet pipe are arranged in the installation space, so that the space utilization rate is improved, the overall volume of the battery pack is reduced, the weight is reduced, more battery cells can be placed in the battery pack, and the energy density of the battery pack is improved.

In some embodiments, the electrical device comprises: a plurality of BMS modules provided on the side end plates; the BDU module, the BDU module includes a plurality of electric spare, and is a plurality of electric spare is established extend on the seat, electric spare with be equipped with the clearance between the BMS module, the feed liquor pipe with the drain pipe is established in the clearance.

In some embodiments, the plurality of electrical components and the plurality of BMS modules are staggered in sequence such that the BMS modules are disposed on opposite sides of each of the electrical components, the gaps are disposed between the electrical components and the BMS modules, the fluid inlet pipe is disposed in one of the gaps, and the fluid outlet pipe is disposed in the other of the gaps.

In some embodiments, a liquid inlet joint and a liquid outlet joint are arranged on the lower shell, the liquid inlet joint and the liquid outlet joint are located in the gap, the liquid inlet joint and the liquid inlet pipe are correspondingly arranged and connected, and the liquid outlet joint and the liquid outlet pipe are correspondingly arranged and connected.

In some embodiments, the temperature control element is a cooling plate, and the liquid inlet pipe and the liquid outlet pipe are arranged at the bottom of the cooling plate.

In some embodiments, the pipe openings of the liquid inlet pipe and the liquid outlet pipe are arranged downward, the interfaces of the liquid inlet joint and the liquid outlet joint, which are located in the installation space, are arranged upward, the liquid inlet joint and the liquid inlet pipe can be matched in an insertion manner, and the liquid outlet joint and the liquid outlet pipe can be matched in an insertion manner.

In some embodiments, the lower housing is provided with an electric connection end, and the side end plate of the base is arranged corresponding to and adjacent to the electric connection end.

In some embodiments, the base is provided with an accommodating space, and the module further includes: multirow electricity core, multirow electricity core is followed the width direction of base sets gradually, every row electricity core is followed the length direction of base is established to a plurality ofly, electricity core includes utmost point post end and bottom, utmost point post end is established just orientation in the accommodation space's bottom sets up, the bottom orientation temperature control spare sets up.

In some embodiments, the battery pack further comprises: and the elastic gasket is arranged between the bottom end of the battery cell and the temperature control part.

In some embodiments, the module further comprises: the busbar, the busbar is established accommodation space's bottom, utmost point post end butt is in downwards on the busbar, utmost point post end includes anodal post and negative pole post, arbitrary adjacent two in the electric core one the anodal post of electric core and another the negative pole post of electric core is through one the busbar links to each other, the battery package still includes: the fastener is arranged in the accommodating space in a penetrating mode, one end of the fastener is connected with the temperature control part, the other end of the fastener is connected with the lower shell, and the pole column end is pressed on the bus bar.

Additional aspects and advantages of the utility model 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 utility model.

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 an exploded view of a battery pack according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a battery pack according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a module according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a base in an embodiment of the utility model;

FIG. 5 is a side view of a battery pack in an embodiment of the utility model;

fig. 6 is a schematic structural view of a temperature control element in an embodiment of the present invention.

Reference numerals:

1000. a battery pack;

100. a module; 10. a base; 11. an accommodating space; 111. a cross beam; 112. a stringer; 113. a subspace; 14. an extension base; 15. an installation space; 20. an electric core; 21. a pole end; 22. a bottom end; 30. a bus bar; 40. an electrical device; 41. a BMS module; 42. a BDU module; 421. an electrical component; 43. a gap;

200. a lower housing; 210. a module space; 220. a liquid inlet joint; 221. a liquid inlet rubber hose part; 230. a liquid outlet joint; 231. a liquid outlet rubber hose part; 240. connecting the electric terminal;

300. a temperature control member; 310. a liquid inlet pipe; 320. a liquid outlet pipe;

400. an elastic pad; 410. a sub-gasket;

500. a fastener; 510. a first fastener; 520. a second fastener.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial.

In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" 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; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A battery pack 1000 according to an embodiment of the present invention will be described below with reference to the drawings.

As shown in fig. 1, a battery pack 1000 according to an embodiment of the present invention includes: a lower case 200, a temperature controller 300, and a module 100.

The lower case 200 is provided with a module space 210. The temperature control member 300 is constructed in a plate shape, and is provided on the lower case 200 to enclose the module space 210, and the temperature control member is provided with a liquid inlet pipe and a liquid outlet pipe. The temperature control member 300 is hermetically connected to the lower case 200 such that the module space 210 is in a closed state, and the closed module space 210 protects the components in the module space 210 from external interference. The temperature control 300 controls the temperature inside the module space 210, and it can be understood that the battery pack 1000 releases a large amount of heat in the charging and discharging processes, or the battery pack 1000 cannot be started at too low temperature, and the too high or too low temperature in the module space 210 generates some adverse effects on the battery pack 1000, and the temperature in the module space 210 is controlled by the temperature control 300 to avoid adverse effects, so that the performance of the battery pack 1000 is improved.

The module 100 includes: base 10 and electrical part 40, be equipped with on the side end plate of base 10 and extend seat 14, it has installation space 15 to extend to inject between the terminal surface and the side end plate of keeping away from the side end plate of seat 14, and electrical part 40 establishes in installation space 15, and feed liquor pipe 310 and drain pipe 320 are established in installation space 15, hold feed liquor pipe 310, drain pipe 320 make full use of module space 210 through setting up installation space 15, have improved space utilization. In the prior art, in order to facilitate detection and control of the battery cell 20, the electric device 40 is usually arranged in the module space 210, and the liquid inlet pipe 310 and the liquid outlet pipe 320 are arranged in the installation space 15 where the electric device 40 is located, so that the space utilization rate is improved, and the overall volume of the battery pack 1000 is reduced.

According to the battery pack provided by the embodiment of the utility model, the liquid inlet pipe and the liquid outlet pipe are arranged in the installation space, so that the space utilization rate is improved, the overall volume of the battery pack is reduced, the weight is reduced, more battery cells can be placed in the battery pack, and the energy density of the battery pack is improved.

In some embodiments, the temperature control member 300 is a cooling plate, a circumferential edge of the cooling plate is connected to a circumferential edge of the lower case 200, and the module space 210 is closed by connecting the circumferential edge of the cooling plate to the circumferential edge of the lower case 200, so as to improve the sealing performance of the module space 210. Meanwhile, the performance of the battery pack 1000 is improved by providing the temperature control member 300 as a cooling plate. For example, a large amount of heat is released by the battery pack 1000 during charging and discharging, the temperature of the battery pack 1000 is rapidly increased by the large amount of heat, the performance of the battery pack 1000 is reduced by the higher temperature of the battery pack 1000, and the performance of the battery pack 1000 is improved by arranging the temperature control member 300 as a cooling plate to cool the battery core 20.

In other embodiments, the temperature control member 300 is a heating plate, the circumferential edge of the heating plate is connected to the circumferential edge of the lower case 200, and the temperature control member 300 is arranged to heat the battery cell 20 to improve the environmental adaptability of the battery pack 1000. For example, the internal reaction of the battery pack 1000 in an environment of-30 degrees cannot be performed normally, and the heating plate heats the battery cell 20, so that the battery cell 20 can operate normally.

As shown in fig. 1, in some embodiments, module 100 includes: base 10, multirow electricity core 20.

The base 10 is provided with an accommodating space 11. Multirow electricity core 20 sets gradually along the width direction of base 10, and every row of electricity core 20 is established to a plurality ofly along the length direction of base 10, and every electricity core 20 includes utmost point post end 21 and bottom 22, and utmost point post end 21 is established in accommodation space 11 and is set up towards accommodation space 11's bottom, and bottom 22 sets up towards temperature control 300. The multiple rows of battery cells 20 are disposed in the accommodating space 11, and the accommodating space 11 restricts the movement of the battery cells 20 to stabilize the battery cells 20. For example, the pole end 21 is disposed on the lower end surface of the battery cell 20 and faces the bottom of the accommodating space 11, the bottom end 22 is disposed on the upper end surface of the battery cell 20 and faces the temperature control member 300, when the battery cell 20 is located in the accommodating space 11, the pole end 21 is located in the accommodating space 11, and the temperature control member 300 is located above the bottom end 22.

As shown in fig. 1, specifically, the module 100 further includes: the bus bar 30 is arranged at the bottom of the accommodating space 11, the pole end 21 abuts against the bus bar 30 downwards, the pole end 21 comprises a positive pole and a negative pole, and the positive pole of one cell 20 of any two adjacent cells 20 is connected with the negative pole of the other cell 20 through the bus bar 30. In the prior art, the bus bar 30 is arranged above the battery cell 20, and the bus bar 30 is usually welded on the upper shell, in the utility model, the bus bar 30 is arranged in the accommodating space 11, and the pole terminal 21 abuts against the bus bar 30 towards the bottom of the accommodating space 11 by using the self gravity of the battery cell 20, so that the welding of the bus bar 30 is omitted, the production efficiency is improved, and the cost is reduced.

As shown in fig. 2, the battery pack 1000 further includes: fastener 500, fastener 500 wear to locate accommodation space 11, and the temperature control part 300 is connected to casing 200 and the other end down connected to the one end of fastener 500 to compress tightly utmost point post end 21 on busbar 30, compress tightly utmost point post end 21 on busbar 30 through setting up fastener 500, improved the reliability of being connected between utmost point post end 21 and the busbar 30.

As shown in fig. 4, more specifically, a cross beam 111 and a longitudinal beam 112 are arranged in the accommodating space 11, the cross beam 111 extends along the width direction of the accommodating space 11, the longitudinal beam 112 extends along the length direction of the accommodating space 11, and the strength of the base 10 is enhanced by the arrangement of the cross beam 111 and the longitudinal beam 112. For example, the width direction of the accommodating space 11 is the left-right direction, the longitudinal direction of the accommodating space 11 is the front-rear direction, the cross member 111 extends in the left-right direction, and the side member 112 extends in the front-rear direction.

As shown in fig. 2, the fastener 500 includes: the first fasteners 510 and the second fasteners 520 are provided, the first fasteners 510 are provided in a plurality at intervals in the longitudinal direction of the cross beam 111, the second fasteners 520 are provided in a plurality at intervals in the longitudinal direction of the side beam 112, and the plurality of first fasteners 510 and the plurality of second fasteners 520 are provided to press the pole end 21 against the bus bar 30, so that the connection stability of the pole end 21 and the bus bar 30 is improved. For example, the cross member 111 extends in the left-right direction, the longitudinal members 112 extend in the front-rear direction, four first fastening members 510 are provided on the cross member 111 at intervals in the left-right direction, and four second fastening members 520 are provided on the longitudinal members 112 at intervals in the front-rear direction.

As shown in fig. 2, in some embodiments, the battery pack 1000 further includes: elastic gasket 400, elastic gasket 400 is established between bottom 22 of battery cell 20 and temperature control piece 300, and through setting up the space between bottom 22 of battery cell 20 and temperature control piece 300 of elastic gasket 400 packing, improve the stability of battery cell 20. Elastic gasket 400 is established in the space between bottom 22 of battery cell 20 and temperature control member 300, and elastic gasket 400 makes battery cell 20 unable to move, and battery cell 20 is stable to be fixed in module space 210.

In some more specific embodiments, the temperature control element 300 is a cooling plate, the elastic gasket 400 is adhered to the cooling plate, and the elastic gasket 400 is adhered to the cooling plate to prevent the cooling plate from contacting the battery cell 20, so as to reduce wear and improve safety. It can be understood that the cooling plate is usually made of metal, and the contact between the cooling plate and the battery cell 20 causes the battery cell 20 and the cooling plate to be worn, which may cause a dangerous situation.

As shown in fig. 2 and 4, in other more specific embodiments, a cross beam 111 and a longitudinal beam 112 are arranged in the accommodating space 11, the cross beam 111 extends in the width direction of the accommodating space 11, the longitudinal beam 112 extends in the length direction of the accommodating space 11, the cross beam 111, the longitudinal beam 112, and the accommodating space 11 jointly define a plurality of subspaces 113, a battery cell 20 is arranged in each subspace 113, the elastic gasket 400 includes a plurality of subspaces 410, the plurality of subspaces 410 and the plurality of subspaces 113 are arranged in a one-to-one correspondence manner, and stability of the battery cell 20 when the battery cell 20 is placed is improved by arranging the plurality of subspaces 113. For example, the accommodating space 11 is defined by the cross beam 111 and the longitudinal beam 112 into four subspaces 113, the battery cell 20 is disposed in the four subspaces 113, the elastic gasket 400 includes four subspaces 410, and the four subspaces 410 correspond to the four subspaces 113 one to one.

For example, the elastic pad 400 is made of foam, the foam fills the space between the battery cell 20 and the temperature control element 300, and the foam is disposed to improve the temperature control effect of the temperature control element 300 and avoid the collision between the battery cell 20 and the temperature control element 300.

As shown in fig. 1, 2 and 3, in some embodiments, the base 10 has a side end plate, the side end plate is provided with an extension seat 14, the extension seat 14 extends along a length direction of the side end plate, an end surface of the extension seat 14 far away from the side end plate and the side end plate define a mounting space 15 therebetween, and the module 100 further includes: electric part 40, electric part 40 establish in installation space 15, are equipped with feed liquor pipe 310 and drain pipe 320 on the temperature control part 300, and feed liquor pipe 310 and drain pipe 320 are established in installation space 15, hold feed liquor pipe 310, drain pipe 320 make full use of module space 210 through setting up installation space 15, have improved space utilization. In the prior art, in order to facilitate detection and control of the battery cell 20, the electric device 40 is usually arranged in the module space 210, and the liquid inlet pipe 310 and the liquid outlet pipe 320 are arranged in the installation space 15 where the electric device 40 is located, so that the space utilization rate is improved, and the overall volume of the battery pack 1000 is reduced.

For example, the extension seat 14 is provided at the front end of the base 10, the longitudinal direction of the side end plate is the left-right direction, the extension seat 14 extends in the left-right direction, the end surface of the extension seat 14 away from the side end plate is the front end surface, and the space between the front end surface of the extension seat 14 and the side end plate is the installation space 15, wherein the installation space 15 is limited only by the front end surface of the extension seat 14 and the side end plate of the base 10, and the installation space 15 can extend infinitely in the left-right direction.

As shown in fig. 1 and 6, in some more specific embodiments, the liquid inlet joint 220 and the liquid outlet joint 230 are disposed on the lower housing 200, the liquid inlet joint 220 and the liquid outlet joint 230 are located in the installation space 15, the liquid inlet joint 220 and the liquid inlet pipe 310 are correspondingly disposed and connected in an inserting manner, the liquid outlet joint 230 and the liquid outlet pipe 320 are correspondingly disposed and connected in an inserting manner, and the liquid inlet joint 220 and the liquid outlet joint 230 are disposed on the lower housing 200 to facilitate connection between the liquid inlet joint 220 and the liquid outlet joint 230 and the liquid inlet pipe 310 and the liquid outlet pipe 320, thereby improving convenience.

As shown in fig. 6, specifically, the liquid inlet joint 220 is provided with a liquid inlet hose portion 221, and the liquid inlet hose portion 221 is connected to the liquid inlet hose 310; the liquid outlet joint 230 is provided with a liquid outlet rubber tube part 231, the liquid outlet rubber tube part 231 is connected with the liquid outlet tube 320, and the liquid inlet joint 220 and the liquid outlet joint 230 are conveniently connected with the liquid inlet tube 310 and the liquid outlet tube 320 through the arrangement of the liquid inlet rubber tube part 221 and the liquid outlet rubber tube part 231. The liquid inlet rubber tube part 221 and the liquid outlet rubber tube part 231 have certain elasticity, when the liquid inlet rubber tube part 221 is connected with the liquid inlet tube 310, the liquid outlet rubber tube part 231 is connected with the liquid outlet tube 320, the liquid outlet rubber tube part 231 is connected with the liquid outlet rubber tube part 231 in an elastic fastening mode, and therefore sealing performance is improved.

More specifically, the liquid inlet joint 220 and the liquid outlet joint 230 are provided with screw thread portions, the lower shell 200 is provided with a fastening nut, the screw thread portions are in threaded connection with the fastening nut, the liquid inlet joint 220 and the liquid outlet joint 230 are convenient to mount on the lower shell 200 through the screw thread portions and the fastening nut, and the mounting efficiency is improved. For example, a through hole is formed in the lower housing 200, the screw portions of the liquid inlet connector 220 and the liquid outlet connector 230 pass through the lower housing 200 from one side thereof to the other side thereof, and the fastening nut is screwed into the screw portions to fasten the liquid inlet connector 220 and the liquid outlet connector 230 to the lower housing 200.

In some embodiments, the temperature control element 300 has a cavity, and the cavity is communicated with the liquid inlet pipe 310 and the liquid outlet pipe 320, so that the liquid can be conveniently circulated through the cavity. Thereby liquid gets into the temperature that makes temperature control 300 in the cavity from feed liquor pipe 310 and changes the temperature that influences in the module space 210, realizes the influence to the temperature of electric core 20, and liquid after the heat of exchange has made things convenient for the circulation of liquid from drain pipe 320 outflow cavity.

Specifically, the cavity has a plurality of cavity parts, the cavity parts are arranged on the temperature control member 300 in parallel, and by arranging the cavity parts to extend over the temperature control member 300, liquid flows in order in the cavity parts, and the performance of the temperature control member 300 is improved.

In other embodiments, the cavity is swirling, which may be configured to increase the performance of temperature control 300.

In some embodiments, the electrical device 40 comprises: BMS module 41, BDU module 42.

The BMS modules 41 are plural and provided on the side end plates. The BDU module 42 includes a plurality of electrical members 421, the plurality of electrical members 421 are provided on the extension block 14, a gap 43 is provided between the electrical members 421 and the BMS module 41, and the inlet duct 310 and the outlet duct 320 are provided in the gap 43. The plurality of electrical components 421 are disposed on the extension seat 14, so that a box portion of the BDU does not need to be disposed, and the space occupied by the box portion is saved; meanwhile, the liquid inlet pipe 310 and the liquid outlet pipe 320 are arranged in the gap 43, so that the electric components 421 and the BMS module 41 are avoided, and the liquid inlet pipe 310, the liquid outlet pipe 320, the electric components 421 and the BMS module 41 are convenient to install.

It should be noted that, the BMS module 41 is a battery management system of the battery pack 1000, the BDU module 42 is a high voltage cut-off control unit of the battery pack 1000, and the functions and the configuration of the plurality of electrical components 421 may specifically refer to the composition of the BDU in the prior art. For example, the plurality of electrical components 421 may include a system main circuit contactor, a pre-charge relay, a current sensor, and the like, which are not described herein.

Specifically, the plurality of electrical members 421 and the plurality of BMS modules 41 are sequentially arranged in a staggered manner such that BMS modules 41 are disposed at opposite sides of each electrical member 421, gaps are disposed between the electrical members 421 and the BMS modules 41, the liquid inlet pipe 310 is disposed in one of the gaps 43, and the liquid outlet pipe 320 is disposed in the other gap 43. It can be understood that the sequential staggering of the plurality of electrical components 421 and the plurality of BMS modules 41 can make the electrical components 421 and the BMS modules 41 in the same plane, for example, the electrical components 421 and the BMS modules 41 are sequentially arranged from left to right, and the electrical components 421 and the BMS modules 41 are in the same plane in the front-rear direction, so that the overall space occupied by the plurality of electrical components 421 and the plurality of BMS modules 41 is reduced, and the structure is compact; meanwhile, the liquid inlet pipe 310 is arranged in the gap 43, and the liquid outlet pipe 320 is arranged in the other gap 43, so that the space of the gap 43 is fully utilized, the space utilization rate is further improved, and the structure is more compact.

In other embodiments, the lower housing 200 is provided with the liquid inlet connector 220 and the liquid outlet connector 230, the liquid inlet connector 220 and the liquid outlet connector 230 are located in the gap 43, the liquid inlet connector 220 and the liquid inlet pipe 310 are correspondingly arranged and connected, the liquid outlet connector 230 and the liquid outlet pipe 320 are correspondingly arranged and connected, and the liquid inlet connector 220 and the liquid outlet connector 230 are located in the gap 43, so that the liquid inlet connector 220 and the liquid outlet connector 230 are correspondingly connected with the liquid inlet pipe 310 and the liquid outlet pipe 320, which facilitates the connection of the liquid inlet connector 220 and the liquid outlet connector 230 with the liquid inlet pipe 310 and the liquid outlet pipe 320, simultaneously saves space and improves the energy density of the battery pack 1000.

Alternatively, the temperature control member 300 is a cooling plate, and the liquid inlet pipe 310 and the liquid outlet pipe 320 are disposed at the bottom of the cooling plate. It can be understood that the liquid inlet pipe 310 and the liquid outlet pipe 320 are arranged at the bottom of the cooling plate, so that the liquid inlet pipe 310 and the liquid outlet pipe 320 are conveniently connected with the liquid inlet connector 220 and the liquid outlet connector 230, the liquid inlet pipe 310 and the liquid outlet pipe 320 are conveniently corresponding to the liquid inlet connector 220 and the liquid outlet connector 230, and meanwhile, the lengths of the liquid inlet pipe 310 and the liquid outlet pipe 320 can be reduced, the size is reduced, and the cost is reduced.

Further, the pipe orifices of the liquid inlet pipe 310 and the liquid outlet pipe 320 are arranged downwards, the interfaces of the liquid inlet joint 220 and the liquid outlet joint 230, which are positioned in the installation space 15, are arranged upwards, the liquid inlet joint 220 and the liquid inlet pipe 310 can be in plug-in fit, the liquid outlet joint 230 and the liquid outlet pipe 320 can be in plug-in fit, the liquid inlet pipe 310, the liquid outlet pipe 320, the liquid inlet joint 220 and the liquid outlet joint 230 are arranged downwards, and the liquid inlet joint 220 and the liquid outlet joint 230 are arranged upwards, so that the liquid inlet pipe 310, the liquid outlet pipe 320, the liquid inlet joint 220 and the liquid outlet joint 230 are convenient to correspond, and the installation efficiency is improved. For example, when the temperature control member 300 is mounted on the lower housing 200, the temperature control member 300 is moved from top to bottom, because the pipe openings of the liquid inlet pipe 310 and the liquid outlet pipe 320 are arranged downward and the interface of the liquid inlet joint 220 and the liquid outlet joint 230 is arranged upward, and in the process that the temperature control member 300 moves from top to bottom, the liquid inlet pipe 310 and the liquid inlet joint 220, the liquid outlet pipe 320 and the liquid outlet joint 230 automatically correspond to each other.

In some embodiments, as shown in fig. 5, the lower housing 200 is provided with an electrical connection terminal 240, and the side end plate of the base 10 is disposed corresponding to and adjacent to the electrical connection terminal 240.

An embodiment of a battery pack 1000 according to the present invention will be described with reference to fig. 1 to 6.

A battery pack 1000 includes: lower casing 200, temperature control piece 300, module 100, elastic gasket 400, fastener 500.

The module space 210 is arranged on the lower shell 200, the liquid inlet joint 220 and the liquid outlet joint 230 are arranged on the front end face of the lower shell 200, the liquid inlet joint 220 is provided with a liquid inlet rubber pipe part 221, the interface of the liquid inlet rubber pipe part 221 faces upwards, the liquid outlet joint 230 is provided with a liquid outlet rubber pipe part 231, and the interface of the liquid outlet rubber pipe part 231 faces upwards. The front end surface of the lower shell 200 is further provided with a fastening nut and an electric connection end 240, the liquid inlet joint 220 and the liquid outlet joint 230 are provided with screw thread portions, and the screw thread portions are in threaded connection with the fastening nut.

The temperature control member 300 is provided on the lower case 200 to enclose the module space 210, and a circumferential edge of the temperature control member 300 is connected to a circumferential edge of the lower case 200. The temperature control member 300 is provided with a cavity, a liquid inlet pipe 310 and a liquid outlet pipe 320, the cavity is provided with a plurality of cavity parts, and the cavity parts are arranged on the temperature control member 300 in parallel. The liquid inlet pipe 310 and the liquid outlet pipe 320 are arranged at the bottom of the temperature control element 300, the pipe orifices of the liquid inlet pipe 310 and the liquid outlet pipe 320 are both arranged downwards, the liquid inlet connector 220 and the liquid inlet rubber pipe part 221 can be matched in an inserting mode, and the liquid outlet connector 230 and the liquid outlet rubber pipe part 231 can be matched in an inserting mode.

The module 100 is disposed in the module space 210, the module 100 comprising: base 10, electric core 20, busbar 30, electrical component 40.

The base 10 is provided with an accommodating space 11. Be equipped with crossbeam 111 and longeron 112 in the accommodation space 11, crossbeam 111 extends along accommodation space 11's width direction, and crossbeam 111 extends along the left-right direction promptly, and longeron 112 extends along accommodation space 11's length direction, and longeron 112 extends along the fore-and-aft direction promptly, and crossbeam 111, longeron 112, accommodation space 11 are injectd four subspaces 113 jointly, all are equipped with electric core 20 in every subspace 113. The base 10 has a side end plate, the side end plate is provided with an extension seat 14, the side end plate of the base 10 is disposed corresponding to and adjacent to the electric connection end 240, the extension seat 14 extends along the length direction of the side end plate, that is, the extension seat 14 extends along the left-right direction, and an installation space 15 is defined between the end surface of the extension seat 14 far away from the side end plate and the side end plate.

Battery core 20 includes terminal end 21 and bottom 22, and terminal end 21 includes positive post and negative pole post, and terminal end 21 establishes in accommodation space 11 and sets up towards accommodation space 11's bottom, and bottom 22 sets up towards temperature control 300.

The bus bar 30 is disposed at the bottom of the accommodating space 11, the pole end 21 abuts downward on the bus bar 30, and the positive pole of one cell 20 and the negative pole of another cell 20 in any two adjacent cells 20 are connected through one bus bar 30.

The electric devices 40 are provided in the installation space 15, and the electric devices 40 include the BMS module 41 and the BDU module 42. The BMS modules 41 are four and are provided on the side end plates of the base frame 10. The BDU module 42 includes three electrical members 421, a plurality of electrical members 421 are disposed on the extension base 14, the three electrical members 421 and the four BMS modules 41 are sequentially staggered, a gap 43 is disposed between any adjacent electrical member 421 and BMS module 41, the liquid inlet pipe 310 is disposed in one gap 43, and the liquid outlet pipe 320 is disposed in the other gap 43. Meanwhile, the inlet joint 220 and the outlet joint 230 are located in the gap 43.

The elastic gasket 400 is made of foam, the elastic gasket 400 includes four sub-gaskets 410, the four sub-gaskets 410 correspond to the four subspaces 113 one by one, the four sub-gaskets 410 are disposed between the bottom 22 of the battery cell 20 and the temperature control member 300, and the four sub-gaskets 410 are adhered to the lower end surface of the temperature control member 300.

The fasteners 500 include first fasteners 510 and second fasteners 520, the first fasteners 510 are provided with four spaced intervals along the length direction of the cross beam 111, that is, the first fasteners 510 are provided with four spaced intervals along the left-right direction, one ends of the four first fasteners 510 are connected to the lower housing 200 and the other ends are connected to the temperature control member 300, the second fasteners 520 are provided with four spaced intervals along the front-rear direction, one ends of the four second fasteners 520 are connected to the lower housing 200 and the other ends are connected to the temperature control member 300, and the first fasteners 510 and the second fasteners 520 press the pole post end 21 against the busbar 30.

Other constructions and operations of the battery pack 1000 according to the embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description herein, references to the description of the terms "embodiment," "example," 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 utility model. In this specification, the schematic representations of the terms used above do not necessarily 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.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A battery pack (1000), comprising:

a lower housing (200), the lower housing (200) having a module space (210);

the temperature control part (300), the temperature control part (300) is in a plate shape, the temperature control part (300) is arranged on the lower shell (200) to seal the module space (210), and a liquid inlet pipe (310) and a liquid outlet pipe (320) are arranged on the temperature control part (300);

a module (100), the module (100) comprising: base (10) and electrical part (40), be equipped with on the side end plate of base (10) and extend seat (14), the keeping away from of extending seat (14) the terminal surface of side end plate with installation space (15) have been injectd between the side end plate, electrical part (40) are established in installation space (15), feed liquor pipe (310) with drain pipe (320) are established in installation space (15).

2. The battery pack (1000) according to claim 1, wherein the electric device (40) comprises:

a plurality of BMS modules (41), the BMS modules (41) being provided on the side end plates;

a BDU module (42), BDU module (42) includes a plurality of electric pieces (421), and is a plurality of electric pieces (421) establish extend on seat (14), electric piece (421) with be equipped with clearance (43) between BMS module (41), feed liquor pipe (310) with drain pipe (320) establish in clearance (43).

3. The battery pack (1000) of claim 2, wherein the plurality of electrical members (421) and the plurality of BMS modules (41) are staggered in sequence such that the BMS modules (41) are disposed on opposite sides of each of the electrical members (421), the gaps are disposed between the electrical members (421) and the BMS modules (41), the inlet duct (310) is disposed in one of the gaps (43), and the outlet duct (320) is disposed in the other of the gaps (43).

4. The battery pack (1000) of claim 2, wherein the lower case (200) is provided with a liquid inlet connector (220) and a liquid outlet connector (230), the liquid inlet connector (220) and the liquid outlet connector (230) are located in the gap (43), the liquid inlet connector (220) and the liquid inlet pipe (310) are correspondingly arranged and connected, and the liquid outlet connector (230) and the liquid outlet pipe (320) are correspondingly arranged and connected.

5. The battery pack (1000) of claim 4, wherein the temperature control member (300) is a cooling plate, and the liquid inlet pipe (310) and the liquid outlet pipe (320) are disposed at the bottom of the cooling plate.

6. The battery pack (1000) according to claim 5, wherein the inlet pipe (310) and the outlet pipe (320) have their mouths facing downward, the inlet connector (220) and the outlet connector (230) have their mouths facing upward in the installation space (15), the inlet connector (220) and the inlet pipe (310) are in plug-in fit, and the outlet connector (230) and the outlet pipe (320) are in plug-in fit.

7. The battery pack (1000) according to claim 1, wherein the lower case (200) is provided with an electric terminal (240), and the side end plate of the base (10) is disposed corresponding to and adjacent to the electric terminal (240).

8. The battery pack (1000) according to claim 1, wherein the base (10) is provided with a receiving space (11), and the module (100) further comprises: multirow electricity core (20), multirow electricity core (20) are followed the width direction of base (10) sets gradually, every row electricity core (20) are followed the length direction of base (10) is established to a plurality ofly, every electricity core (20) are including utmost point post end (21) and bottom (22), utmost point post end (21) are established just orientation in accommodation space (11) the bottom setting of accommodation space (11), bottom (22) orientation temperature control spare (300) set up.

9. The battery pack (1000) of claim 8, wherein the battery pack (1000) further comprises: an elastic gasket (400), wherein the elastic gasket (400) is arranged between the bottom end (22) of the battery cell (20) and the temperature control member (300).

10. The battery pack (1000) of claim 8, wherein the module (100) further comprises: the bus bar (30) is arranged at the bottom of the accommodating space (11), the pole post end (21) is abutted against the bus bar (30) downwards, the pole post end (21) comprises a positive pole post and a negative pole post, the positive pole post of one battery cell (20) and the negative pole post of the other battery cell (20) in any two adjacent battery cells (20) are connected through one bus bar (30),

the battery pack (1000) further includes: the fastener (500) penetrates through the accommodating space (11), one end of the fastener (500) is connected with the temperature control part (300) and the other end of the fastener is connected with the lower shell (200) so as to press the pole column end (21) on the bus bar (30).

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