CN218005160U - Battery pack, energy storage device thereof and energy storage device control system - Google Patents

Abstract

The utility model discloses a battery pack and energy memory, energy memory control system thereof, battery pack includes: the battery module comprises at least one battery core group, the battery core group comprises a plurality of battery cells arranged along the thickness direction of the battery core group, each battery cell comprises a battery cell body and a plurality of polar columns, and the plurality of polar columns are respectively arranged at two ends of the battery cell body; the battery module comprises a plurality of battery cores, at least one pole column guide plate, a plurality of battery cell bodies and a plurality of battery cell modules, wherein the battery module comprises a battery module body and a plurality of battery cell terminals; electric core sampling board, electric core sampling board establish at the other end of a plurality of electric cores, and electric core sampling board is connected with the casing electricity of the electric core body of a plurality of electric cores at least. According to the utility model discloses a battery pack adopts the wireless beam connection, avoids interfering mutually between too much pencil to make the accurate information of gathering electric core of electric core sampling board, and can reduce battery pack's cost.

Description

Battery pack, energy storage device thereof and energy storage device control system

Technical Field

The utility model belongs to the technical field of the battery technique and specifically relates to a battery pack and energy memory, energy memory control system thereof is related to.

Background

In the related art, for a blade battery with a long length, a PCB board is generally disposed on each of two sides of the battery in the length direction to sample the battery, and then sample data is transmitted to a BIC board. However, the arrangement of the above-mentioned PCB needs to adopt more sampling lines to connect, that is, a plurality of sampling lines are welded to the sampling points of the battery for sampling, and after the battery is used for a long time, the sampling lines have a risk of disconnection, so that the battery cannot be accurately sampled, and further the service condition of the battery cannot be effectively monitored, and the service life of the battery is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a battery pack can realize the sampling of wireless bundle to can avoid appearing the condition of pencil broken string, can accurately sample battery module simultaneously, monitor battery module's in service behavior effectively, reduce battery pack's cost. Another object of the utility model is to provide an energy storage device including above-mentioned battery pack.

It is a further object of the present invention to provide an energy storage device control system including the above energy storage device.

According to the utility model discloses battery pack of first aspect embodiment includes: the battery module comprises at least one battery core group, the battery core group comprises a plurality of battery cells arranged along the thickness direction of the battery core group, each battery cell comprises a battery cell body and a plurality of pole columns, and the pole columns are respectively arranged at two ends of the battery cell body; the battery module comprises a plurality of battery cores, at least one pole column guide plate and a plurality of battery cell bodies, wherein the pole column guide plate is arranged on the battery module and is positioned at one end of each of the plurality of battery cores, and the pole column guide plate is electrically connected between the pole columns of the plurality of battery cores and the shells of the plurality of battery core bodies; the electric core sampling board, the electric core sampling board is established a plurality of the other end of electric core, the electric core sampling board is at least with a plurality of the electric core the casing electricity of electric core body is connected.

According to the utility model discloses battery pack, the utmost point post of electric core body is located the both ends of electric core, is connected to the casing of electric core through using utmost point post baffle with the utmost point post of electric core body one end on, makes the electric potential on the utmost point post of this one end of electric core body and the casing of electric core level mutually, and the electric core sampling board of the electric core body other end is connected to the casing of electric core on, samples the information of electric core, adopts utmost point post baffle to connect, has avoided the short line risk that adopts the pencil, realizes the sampling of wireless bundle.

According to some embodiments of the utility model, utmost point post baffle includes: the middle connecting sheet extends along the arrangement direction of the plurality of battery cells and is provided with a first side and a second side in the direction vertical to the arrangement direction; a plurality of first connection pieces which are connected to the first side at intervals, and which are electrically connected to the electrode posts at the one ends of the plurality of battery cells, respectively; the second connecting pieces are connected to the second side at intervals, and are electrically connected to the casings of the cell bodies of the cells.

According to some embodiments of the present invention, one end of the first connecting pieces is connected to a side of the intermediate connecting piece away from the battery module, and the other end of the first connecting pieces is electrically connected to the terminal of the one end of the battery cells; and/or one end of the plurality of second connecting pieces is connected to one side, far away from the battery module, of the middle connecting piece, and the other end of the plurality of second connecting pieces is electrically connected with the shell of the battery cell body of the battery cell.

According to some embodiments of the present invention, each of the first connection pieces includes a first connection section, a second connection section, and a third connection section, the first connection section is connected to one side of the middle connection piece away from the battery module, one end of the second connection section is connected to the first connection section, the other end of the second connection section extends toward the battery module, one end of the third connection section is connected to the other end of the second connection section, the other end of the third connection section extends toward a direction away from the center of the middle connection piece, and the third connection section is electrically connected to the terminal of the one end of the battery cell; and/or each second connecting piece comprises a fourth connecting section, a fifth connecting section and a sixth connecting section, the fourth connecting section is connected to one side, away from the battery module, of the middle connecting piece, one end of the fifth connecting section is connected to the fourth connecting section, the other end of the fifth connecting section faces towards the direction of the battery module and extends, one end of the sixth connecting section is connected to the other end of the fifth connecting section, the other end of the sixth connecting section faces towards the direction away from the center of the middle connecting piece and extends, and the sixth connecting section is electrically connected with the shell of the battery core body of the battery core.

According to some embodiments of the invention, the third connection section has a width greater than a width of at least one of the first connection section and the second connection section; and/or the width of the sixth connecting section is greater than the width of at least one of the fourth connecting section and the fifth connecting section.

According to some embodiments of the present invention, the first side is provided with a plurality of first extending portions extending away from the center of the intermediate connection piece, the plurality of first extending portions are arranged at intervals along the arrangement direction, the plurality of first connection pieces are opposite to the plurality of first extending portions, and one end of each of the plurality of first connection sections extends to exceed the plurality of first extending portions; and/or the second side is provided with a plurality of second extending parts extending towards the center far away from the middle connecting piece, the second extending parts are arranged at intervals along the arrangement direction, the second connecting pieces are opposite to the second extending parts, and one ends of the fourth connecting sections respectively extend to exceed the second extending parts.

According to some embodiments of the present invention, the length of the fifth connecting section in the length direction of the electric core is greater than the length of the second connecting section in the length direction of the electric core.

According to some embodiments of the utility model, it is a plurality of first connection piece and a plurality of the second connection piece along with the setting of staggering of direction vertically of arranging.

According to some embodiments of the invention, the first connecting pieces and the second connecting pieces are nickel pieces.

According to some embodiments of the utility model, utmost point post baffle is flexible circuit board.

According to some embodiments of the invention, the battery assembly further comprises: the battery cell comprises a plurality of electrode posts, a plurality of electrode post connecting pieces and an electrode post guide plate, wherein the electrode posts at one end of the battery cell are connected through the plurality of electrode post connecting pieces, and the electrode post guide plate is connected with the plurality of electrode post connecting pieces.

According to the utility model discloses a some embodiments, utmost point post baffle is with a plurality of utmost point post connection piece welding.

According to some embodiments of the invention, the battery assembly further comprises: the collection board, the collection board is established keeping away from of electricity core sampling board one side of battery module, electricity core sampling board with the collection board electricity is connected.

According to the utility model discloses a some embodiments, be equipped with at least one connector on the collection board, the collection board passes through the connector with electricity core sampling board electricity is connected.

According to some embodiments of the invention, the battery assembly further comprises: and the protective cover covers one side of the acquisition plate, which is far away from the battery cell sampling plate.

According to some embodiments of the invention, the battery assembly further comprises: the cover plate is arranged on one side, far away from the battery module, of the pole column guide plate.

According to some embodiments of the present invention, the number of the electric core groups is plural, a plurality of the electric cores of each of the electric core groups are arranged at intervals along the thickness direction of the electric core, and a plurality of the electric core groups are arranged along the width direction of the electric core;

the utmost point post baffle is a plurality of, and is a plurality of utmost point post baffle is established same one end of battery module, and is a plurality of utmost point post baffle is respectively with a plurality of electric core group the one end utmost point post and a plurality of electric core the electric core body the casing electricity is connected.

According to some embodiments of the present invention, each the length that electric core is L, every the width of electric core is W, every the thickness of electric core is H, wherein L, W and H satisfy: l is more than or equal to 675mm and less than or equal to 695mm, W is more than or equal to 84.5mm and less than or equal to 95.8mm, H is more than or equal to 11.2mm and less than or equal to 16.2mm.

According to the utility model discloses energy memory of second aspect embodiment, include according to the utility model discloses the battery pack of above-mentioned first aspect embodiment.

According to the utility model discloses energy memory control system of third aspect embodiment includes: a plurality of energy storage devices, the plurality of energy storage devices being connected in parallel, each energy storage device comprising a battery management system, the energy storage device being in accordance with an embodiment of the second aspect of the present invention as described above; and the battery management unit is in communication connection with each battery management system in the plurality of energy storage devices respectively.

According to some embodiments of the utility model, every energy memory still includes battery information collector, battery information collector with the battery management system communication is connected.

According to the utility model discloses a some embodiments, energy memory control system still includes: an energy management system or inverter in communicative connection with the battery management unit.

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

fig. 2 is a schematic diagram of an electric core pack of a battery assembly according to an embodiment of the present invention;

fig. 3 is a partial exploded view of a battery assembly according to an embodiment of the present invention;

fig. 4 is a top view of a pole guide of a battery assembly according to an embodiment of the present invention;

fig. 5 is a side view of a pole guide of a battery assembly according to an embodiment of the present invention;

fig. 6 is a bottom view of a pole guide of a battery assembly according to an embodiment of the present invention;

fig. 7 is a perspective view of a pole guide of a battery assembly according to an embodiment of the present invention;

fig. 8 is a schematic diagram of a cell sampling plate of a battery assembly according to an embodiment of the present invention;

fig. 9 is a schematic diagram of a capture plate of a battery assembly according to an embodiment of the present invention;

fig. 10 is a schematic view of an energy storage device according to an embodiment of the present invention;

fig. 11 is another perspective schematic view of an energy storage device according to an embodiment of the present invention;

fig. 12 is a schematic diagram of an energy storage device control system according to an embodiment of the present disclosure;

fig. 13 is a circuit diagram of an energy storage device control system according to an embodiment of the present invention.

Reference numerals:

a battery pack 100;

a battery module 1; a battery cell group 10; a cell 11; a housing 111; a pole 112;

a pole guide plate 2; a first connecting piece 21; a first connection section 211; a second connection section 212;

a third connection segment 213; a second connecting piece 22; a fourth connection section 221; a fifth connection section 222;

a sixth connecting section 223; an intermediate connecting piece 23; a first side 231; a second side 232; a positioning hole 233;

a first extension 24; a second extension portion 25; a cell sampling plate 3; a pole connecting sheet 4;

a collection plate 5; a connector 51; a protective cover 6; a cover plate 7;

an energy storage device 200; a battery management system 201;

an energy storage device control system 300; a battery management unit 301; a battery information collector 302;

an energy management system 303.

Detailed Description

Embodiments of the present invention are described in detail below, the embodiments described with reference to the drawings are exemplary, and a battery assembly 100 according to an embodiment of a first aspect of an embodiment of the present invention is described below with reference to fig. 1 to 13. Among them, the battery assembly 100 may be applied to the energy storage device 200. In the following description of the present application, the battery assembly 100 is applied to the energy storage device 200 as an example.

As shown in fig. 1 to 13, a battery assembly 100 according to an embodiment of the present invention includes a battery module 1, at least one pole guide 2, and a cell sampling plate 3.

Specifically, the battery module 1 includes at least one electric core group 10, and the electric core group 10 includes a plurality of electric cells 11 arranged along the thickness direction of the electric core group 10, and in the description of the present invention, the meaning of "a plurality" is two or more. Each battery cell 11 includes a battery cell body and a plurality of poles 112, and the poles 112 are respectively disposed at two ends of the battery cell body. Utmost point post baffle 2 is established on battery module 1, and utmost point post baffle 2 is located the one end of a plurality of electric cores 11, and utmost point post baffle 2 electricity is connected between the utmost point post 112 of a plurality of electric cores 11 and the casing 111 of a plurality of electric core bodies. The other end at a plurality of electric cores 11 is established to electric core sampling board 3, and electric core sampling board 3 is connected with the casing 111 electricity of the electric core body of a plurality of electric cores 11 at least.

For example, in the example of fig. 2, the plurality of battery cells 11 of the battery core pack 10 may be arranged along the thickness direction (e.g., the left-right direction in fig. 2) of the battery cells 11, the plurality of pole posts 112 of each battery cell 11 are respectively disposed at two ends (e.g., the up-down direction in fig. 2) of the length direction of the battery cell body, the pole post guide 2 is disposed at one end of the length direction of the battery cell body, and the pole post guide 2 is located at the left end of the battery module 1 in fig. 3. Through connecting utmost point post guide 2 electricity between utmost point post 112 of the one end of a plurality of electric cores 11 and the casing 111 of electricity core body, make casing 111 and the above-mentioned one end of a plurality of electric cores 11 be in same electric potential level, and the electric core sampling board 3 that is located the other end of a plurality of electric cores 11 can gather the electric potential of the above-mentioned one end of a plurality of electric cores 11 through casing 111, when electric core sampling board 3 links to each other with the other end of electric core 11, can gather the voltage of electric core 11, therefore, compare in traditional battery pack 100, battery pack 100 can set up an electric core sampling board 3 and gather the voltage of electric core 11, information such as temperature, thereby can realize that no pencil is connected electric core sampling board 3 with casing 111, so that battery pack 100's structure is more, and can reduce the regular cost of battery pack 100.

According to the utility model discloses battery pack 100 is through establishing utmost point post baffle 2 and electric core sampling plate 3 at the both ends of electric core group 10, and utmost point post baffle 2 is connected with the casing 111 electricity of a plurality of electric cores 11 and electric core body respectively, and electric core sampling plate 3 is connected with casing 111 electricity. From this, compare with traditional battery, can set up a battery core sampling board 3 on battery pack 100 and gather electric core 11's voltage, temperature etc to can save the setting of pencil, thereby can avoid appearing the condition of pencil broken string, and then can accurately sample battery module 1, monitor battery module 1's in service behavior effectively, and can reduce battery pack 100's cost.

According to some embodiments of the present invention, referring to fig. 4, the pole guide 2 includes an intermediate connection sheet 23, a plurality of first connection sheets 21 and a plurality of second connection sheets 22, the intermediate connection sheet 23 extends along the arrangement direction of the plurality of battery cells 11, and the intermediate connection sheet 23 has a first side 231 and a second side 232 in the direction perpendicular to the arrangement direction. The first connection pieces 21 are connected to the first side 231 at intervals, and the first connection pieces 21 are electrically connected to the electrode posts 112 at one ends of the battery cells 11, respectively. The plurality of second connection pieces 22 are connected to the second side 232 at intervals, and the plurality of second connection pieces 22 are electrically connected to the housings 111 of the cell bodies of the plurality of cells 11, respectively.

For example, in the example of fig. 4, the intermediate connecting piece 23 extends in the thickness direction of the battery module 1 (e.g., the front-rear direction in fig. 3), and both sides in the width direction of the intermediate connecting piece 23 (i.e., the upper and lower sides in fig. 4) are a first side 231 and a second side 232, respectively, i.e., the upper side of the intermediate connecting piece 23 is the first side 231, and the lower side of the intermediate connecting piece 23 is the second side 232. The edge of the first side 231 of the middle connecting piece 23 is connected with four first connecting pieces 21, the four first connecting pieces 21 are uniformly arranged along the length direction of the first side 231 of the middle connecting piece 23, the edge of the second side 232 of the middle connecting piece 23 is connected with four second connecting pieces 22, and the four second connecting pieces 22 are uniformly arranged along the length direction of the second side 232 of the middle connecting piece 23. When the battery pack is mounted, each first connecting piece 21 is welded to the corresponding pole 112 at one end of the battery cell 11, and each second connecting piece 22 is welded to the casing 111 of the battery cell body. Therefore, the first connecting sheet 21 and the second connecting sheet 22 are arranged on the pole guide plate 2, so that the pole guide plate 2 is conveniently electrically connected with the pole 112 and the battery cell shell 111, meanwhile, the wire harness can be saved, and the problem of disconnection of the wire harness is avoided.

Further, one end of each of the first connecting pieces 21 is connected to one side of the intermediate connecting piece 23 away from the battery module 1, and the other end of each of the first connecting pieces 21 is electrically connected to the terminal 112 at one end of each of the battery cells 11; and/or one end of the plurality of second connecting pieces 22 is connected to one side of the intermediate connecting piece 23 away from the battery module 1, and the other end of the plurality of second connecting pieces 22 is electrically connected to the housing 111 of the cell body of the plurality of cells 11. Wherein only one end of the plurality of first connecting pieces 21 may be connected to a side (not shown) of the intermediate connecting piece 23 away from the battery module 1; alternatively, one ends of the plurality of first connecting pieces 21 and one ends of the plurality of second connecting pieces 22 are connected to the side of the intermediate connecting piece 23 remote from the battery module 1 (as shown in fig. 4 and 7). With such an arrangement, when the first connecting piece 21 is connected with the pole 112, the interference between the connecting position of the first connecting piece 21 and the intermediate connecting piece 23 and the pole 112 can be avoided, and when one end of the first connecting piece 21 and one end of the second connecting piece 22 are located on the same side in the thickness direction of the intermediate connecting piece 23, the thickness of the pole guide plate 2 can be reduced.

Further, as shown in fig. 5 and 7, each first connection piece 21 includes a first connection section 211, a second connection section 212, and a third connection section 213, the first connection section 211 is connected to one side of the intermediate connection piece 23 away from the battery module 1, one end of the second connection section 212 is connected to the first connection section 211, the other end of the second connection section 212 extends toward the battery module 1, one end of the third connection section 213 is connected to the other end of the second connection section 212, the other end of the third connection section 213 extends toward the direction away from the center of the intermediate connection piece 23, and the third connection section 213 is electrically connected to the terminal post 112 at one end of the battery cell 11. And/or each second connecting piece 22 comprises a fourth connecting section 221, a fifth connecting section 222 and a sixth connecting section 223, the fourth connecting section 221 is connected to one side of the middle connecting piece 23, which is far away from the cell body, one end of the fifth connecting section 222 is connected with the fourth connecting section 221, the other end of the fifth connecting section 222 extends towards the direction of the cell body, one end of the sixth connecting section 223 is connected with the other end of the fifth connecting section 222, the other end of the sixth connecting section 223 extends towards the direction, which is far away from the center of the middle connecting piece 23, and the sixth connecting section 223 is electrically connected with the shell 111 of the cell body of the cell 11. Therefore, the first connecting sheet 21 and the second connecting sheet 22 are simple in structure and convenient to process.

In some optional examples, the third connection section 213 of the first connection tab 21 on the pole guide plate 2 is connected to the pole 112 at one end of the cell body, and the sixth connection section 223 of the second connection tab 22 is connected to the casing 111 of the cell body, that is, the electrical connection between the cell 11 and the casing 111 of the cell body is realized through the pole guide plate 2, at this time, the electric potential at one end of the cell 11 is the same as the electric potential of the casing 111 of the cell body, and the sampling of the information of the cell 11 can be realized through the connection between the cell sampling plate 3 at the other end of the cell body and the casing 111 of the cell body.

According to some embodiments of the present invention, the width of the third connection section 213 is greater than the width of at least one of the first connection section 211 and the second connection section 212. And/or the width of the sixth connecting section 223 is greater than the width of at least one of the fourth connecting section 221 and the fifth connecting section 222. For example, in the example of fig. 7, the width of the second connection section 212 is equal to the width of the first connection piece 21, and the width of the third connection section 213 is greater than the width of the second connection section 212. Likewise, the width of the fifth connecting section 222 and the width of the fourth connecting section 221 are equal, and the width of the sixth connecting section 223 is greater than the width of the fifth connecting section 222. Thereby, the contact area of the third connection section 213 with the pole 112 of the cell 11 can be increased to enable the third connection section 213 to be reliably welded to the pole 112 of the cell 11, and the contact area of the sixth connection section 223 with the casing 111 of the cell body can be increased to enable the sixth connection section 223 to be reliably welded to the casing 111.

According to some embodiments of the present invention, as shown in fig. 6, the first side 231 is provided with a plurality of first extending portions 24 extending toward the center of the middle connection piece 23, the first extending portions 24 are arranged at intervals along the arrangement direction, the first connecting pieces 21 are opposite to the first extending portions 24, and one ends of the first connecting sections 211 respectively extend to exceed the first extending portions 24. And/or the second side 232 is provided with a plurality of second extending portions 25 extending towards the center far away from the middle connecting sheet 23, the plurality of second extending portions 25 are arranged at intervals along the arrangement direction, the plurality of second connecting sheets 22 are opposite to the plurality of second extending portions 25, and one end of each of the plurality of fourth connecting sections 221 extends to exceed the plurality of second extending portions 25.

For example, in the example of fig. 6, the number of the first extending portions 24 is four, the four first extending portions 24 are uniformly spaced along the length direction of the intermediate connecting piece 23 of the pole guide 2, each first extending portion 24 extends in a direction away from the center of the intermediate connecting piece 23, and the end of each first connecting piece 21, at which the first connecting section 211 is connected to the second connecting section 212, extends beyond the first extending portion 24, so as to avoid the interference between the connecting portion of the first connecting section 211 and the second connecting section 212 and the first extending portion 24 when the first connecting piece 21 is connected to the intermediate connecting piece 23. Similarly, the number of the second extending portions 25 is four, the four second extending portions 25 are uniformly arranged at intervals along the length direction of the middle connecting piece 23 of the pole post guide plate 2, each second extending portion 25 also extends along the direction away from the center of the middle connecting piece 23, one end of each second connecting piece 22, which is connected with the fourth connecting section 221 and the fifth connecting section 222, exceeds the second extending portion 25, and the interference between the connecting part of the fourth connecting section 221 and the fifth connecting section 222 and the second extending portion 25 is avoided when the second connecting piece 22 is connected with the middle connecting piece 23. In addition, the arrangement of the extending portions (i.e., the first extending portion 24 and the second extending portion 25) increases the contact area between the plurality of connecting pieces and the intermediate connecting piece 23 of the pole guide plate 2, and enhances the connection strength between the connecting pieces and the intermediate connecting piece 23, so that the connection reliability between the first connecting piece 21 and the intermediate connecting piece 23 and the connection reliability between the second connecting piece 22 and the intermediate connecting piece 23 can be ensured, and further, the connection between the pole 112 of the battery cell 11 and the casing 111 of the battery cell 11 is prevented from being affected by the separation between the connecting pieces and the intermediate connecting piece 23.

According to some embodiments of the present invention, as shown in fig. 1 and 7, the length of the fifth connection section 222 in the length direction of the battery cell 11 is greater than the length of the second connection section 212 in the length direction of the battery cell 11. Because casing 111 of electric core body and the utmost point post 112 of electric core body lie in different planes, thereby the longer fifth linkage segment 222 of length can make sixth linkage segment 223 more be close to the casing 111 of electric core body, can connect sixth linkage segment 223 smoothly on casing 111 of electric core 11, the shorter second linkage segment 212 of length can make third linkage segment 213 more be close to the utmost point post 112 of electric core 11 simultaneously, can connect third linkage segment 213 smoothly on utmost point post 112, and then guarantee that utmost point post 112 equals with the electric potential of casing 111 of electric core 11, the electric core sampling board 3 of the other end of messenger electric core 11 can be to the information sampling of electric core 11.

According to some embodiments of the present invention, as shown in fig. 7, the plurality of first connection pieces 21 and the plurality of second connection pieces 22 are arranged in a staggered manner in a direction perpendicular to the arrangement direction. So set up, can guarantee the structural strength of utmost point post baffle 2, take place deformation when avoiding utmost point post baffle 2 to connect.

In some optional examples, as shown in fig. 4, the middle connection plate 23 of the pole guide 2 is provided with a plurality of positioning holes 233, and the housing 111 of the cell body is provided with a plurality of positioning posts. During installation, the installation position of the pole guide plate 2 on the casing 111 can be determined by one-to-one matching of the positioning holes 233 and the positioning columns, so that the first connecting sheet 21 of the pole guide plate 2 can be smoothly connected with the pole 112 at one end of the battery cell 11, and the second connecting sheet 22 can be electrically connected with the casing 111 of the battery cell body.

Alternatively, the plurality of first connection pieces 21 and the plurality of second connection pieces 22 are nickel pieces, respectively. Since the nickel plate has low cost and good welding performance, the connection reliability of the first connection piece 21 and the second connection piece 22 with the intermediate connection piece 23 can be ensured, and the cost of the battery assembly 100 can be reduced.

Optionally, the pole guide 2 is a flexible circuit board. According to some embodiments of the present invention, the battery assembly 100 further includes a plurality of terminal connecting pieces 4, the terminal 112 of one end of the plurality of battery cells 11 is connected through the plurality of terminal connecting pieces 4, and the terminal guide 2 is connected with the plurality of terminal connecting pieces 4. Because utmost point post 112's cross-sectional area is less, is difficult for welding first connecting piece 21 and utmost point post 112 of utmost point post baffle 2, through setting up utmost point post connecting piece 4, and utmost point post connecting piece 4's area is great, can increase first connecting piece 21 and utmost point post connecting piece 4's area of contact, does benefit to first connecting piece 21 and utmost point post 112 connection 4's connection, can improve assembly efficiency. According to the utility model discloses a some embodiments, utmost point post baffle 2 welds with a plurality of utmost point post connection pieces 4. Wherein, utmost point post connection piece 4 can be the nickel piece, can be connected with a plurality of utmost point post connection pieces 4 respectively through mode utmost point post baffle 2's such as spot welding, laser beam welding a plurality of first connection pieces 21, and the connected mode is simple, convenient operation.

According to some embodiments of the utility model, battery pack 100 further includes acquisition board 5, and acquisition board 5 is established in one side of keeping away from battery module 1 of electric core sampling board 3, and electric core sampling board 3 is connected with acquisition board 5 electricity. As shown in fig. 3, the collecting plate 5 is located on the right side of the electrical core sampling plate 3, the electrical core sampling plate 3 is used for collecting signals such as voltage and current on the electrical core 11, and the collecting plate 5 is used for collecting sampling information of the electrical core sampling plate 3. Specifically, the electric core sampling plate 3 is connected with the shell 111 of the electric core 11 to sample the electric core body, and transmit a sampling signal to the acquisition plate 5, so as to complete acquisition of information of the electric core 11, and then the acquisition plate 5 can transmit a received signal to the battery management system 201 of the energy storage device 200, so that the service condition of the battery assembly 100 can be monitored through the battery management system 201.

Further, at least one connector 51 is arranged on the collecting plate 5, and the collecting plate 5 is electrically connected with the cell sampling plate 3 through the connector 51. As shown in fig. 9, the connector 51 may be disposed at one end of the width direction of the collecting plate 5, and during installation, the plug connector on the cell sampling plate 3 may be directly fitted in the connector 51, so that the sampling information of the cell sampling plate 3 is transmitted to the collecting plate 5 through the connector 51, thereby realizing transmission of a wireless harness sampling signal, and the signal of the transmission mode is more stable and reliable.

According to some embodiments of the present invention, the battery assembly 100 further includes a protection cover 6, and the protection cover 6 covers one side of the collecting plate 5 away from the cell sampling plate 3. As shown in fig. 1, the protective cover 6 is located on the right side of the acquisition plate 5. Wherein, visor 6 can play waterproof dirt-proof effect, and protection acquisition board 5 and electric core sampling board 3 are not destroyed.

According to some embodiments of the present invention, the battery assembly 100 further includes a cover plate 7, and the cover plate 7 is disposed on one side of the pole guide 2 away from the battery module 1. Referring to fig. 3, the cover plate 7 is located on the left side of the pole guide 2. The cover plate 7 can protect the pole guide plate 2 and the battery cell body, the pole guide plate 2 and the battery cell 11 are prevented from being damaged, and the cover plate 7 can play a role in water prevention and dust prevention.

According to some embodiments of the present invention, the electric core groups 10 are plural, the plurality of electric cores 11 of each electric core group 10 are arranged along the thickness direction (left and right direction in fig. 2) of the electric core 11 at intervals, and the plurality of electric core groups 10 are arranged along the width direction of the electric core 11. Utmost point post baffle 2 is a plurality of, and a plurality of utmost point post baffles 2 are established at battery module 1 same end, and a plurality of utmost point post baffles 2 are connected with utmost point post 112 of a plurality of electric cores 11 of a plurality of electric core groups 10 and the casing 111 electricity of the electric core body of a plurality of electric cores 11 respectively. For example, when electric core group 10 is a plurality of, a plurality of utmost point post baffle 2 and a plurality of electric core group 10 one-to-one, a plurality of utmost point post baffles 2 are arranged along electric core 11's width direction, a plurality of connection pieces on every utmost point post baffle 2 link to each other with utmost point post 112 of electric core group 10's electric core 11 and the casing 111 of electricity core body that corresponds respectively, so that the information on each electric core 11 can both pass through utmost point post baffle 2 and casing 111 and transmit on electric core sampling plate 3 of the electric core 11 other end, and then make electric core sampling plate 3 can sample the information on electric core 11.

According to the utility model discloses a some embodiments, the length that every electric core 11 is L, and the width of every electric core 11 is W, and the thickness of every electric core 11 is H, and wherein L, W and H satisfy: l is more than or equal to 675mm and less than or equal to 695mm, W is more than or equal to 84.5mm and less than or equal to 95.8mm, H is more than or equal to 11.2mm and less than or equal to 16.2mm.

Further, each cell 11 is a lithium iron phosphate cell 11, and the cell 11 is manufactured by using a lithium iron phosphate technology, and has a flat shape similar to a blade. The volume utilization rate is greatly improved through the innovation of the structure of the battery cell 11, the design goal of loading more battery cells 11 in the same space is finally achieved, and the space utilization rate is increased.

According to the embodiment of the second aspect of the present invention, the energy storage device 200 includes the battery assembly 100 according to the embodiment of the first aspect of the present invention.

According to the utility model discloses an energy memory 200 adopts above-mentioned battery pack 100, can improve the accuracy of sampling information, effectively monitors energy memory 200, extension energy memory 200's life.

As shown in fig. 12 and 13, an energy storage device control System 300 according to an embodiment of the present invention includes a Battery Management Unit (BMU) 301 and a plurality of energy storage devices 200, wherein the plurality of energy storage devices 200 are connected in parallel, each energy storage device 200 includes a Battery Management System (BMS) 201, and the Battery Management Unit (BMU) 301 and the Battery Management System (BMS) 201 of each energy storage device 200 in the plurality of energy storage devices 200 CAN be communicatively connected, for example, via a Controller Area Network (CAN) bus.

The Battery Management Unit (BMU) 301 in the present application may be separately made into a module, which may monitor the states of the Battery Management Systems (BMS) 201 in all the energy storage devices 200 connected in parallel, and perform distributed control management (i.e., perform independent control management on each battery management system 201) and state of charge (SOC) balancing on each battery management system 201 through communication. No matter how many energy storage devices 200 are connected in parallel, only one total Battery Management Unit (BMU) 301 can be used to control all the energy storage devices 200 connected in parallel, and the cost is saved.

Further, referring to fig. 13, each energy storage device 200 further includes a Battery Information Collector (BIC) 302, and the Battery Information Collector (BIC) 302 is communicatively connected to the Battery management system 201, for example, communicatively connected through a CAN bus. The BIC is mainly used for collecting battery data and transmitting the battery data to a Battery Management System (BMS) 201, when the battery data is abnormal, an interrupter (not shown in the figure) of a main circuit of a corresponding battery can be controlled by the BMS to be disconnected, and when the whole system is in fault, the BMS can receive a control command of the BMU and make a corresponding control action on the control command of the BMU, for example, the relay of the main circuit of all the batteries is controlled to be disconnected.

Further, as shown in fig. 12, the Energy storage device control System 300 may further include an Energy Management System (EMS) 303 or an inverter, and the Energy Management System 303 or the inverter is communicatively connected to the battery Management unit 301, for example, via a CAN bus. The battery management unit 301 may transmit the basic state of the battery, etc., to the EMS/inverter and receive a charge and discharge command of the EMS/inverter, thereby performing independent charge and discharge control of each BMS.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "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 only for convenience of description of the present invention and to simplify the description, but do not indicate or imply that the device or element 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.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like 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 present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention 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 invention, the scope of which is defined by the claims and their equivalents.

Claims (22)

1. A battery assembly (100), comprising:

the battery module (1) comprises at least one battery core group (10), the battery core group (10) comprises a plurality of battery cells (11) arranged along the thickness direction of the battery core group (10), each battery cell (11) comprises a battery cell body and a plurality of pole columns (112), and the pole columns (112) are respectively arranged at two ends of the battery cell body;

the terminal post guide plate (2) is arranged on the battery module (1), the terminal post guide plate (2) is positioned at one end of the plurality of battery cores (11), and the terminal post guide plate (2) is electrically connected between the terminal posts (112) of the plurality of battery cores (11) and the shells (111) of the plurality of battery core bodies;

the battery cell sampling plate (3), the battery cell sampling plate (3) is established a plurality of the other end of battery cell (11), the battery cell sampling plate (3) is at least with a plurality of the battery cell (11) casing (111) electricity of battery cell body is connected.

2. The battery assembly (100) of claim 1, wherein the pole guide (2) comprises:

an intermediate connecting piece (23), the intermediate connecting piece (23) extending along an arrangement direction of the plurality of battery cells (11), the intermediate connecting piece (23) having a first side (231) and a second side (232) in a direction perpendicular to the arrangement direction;

a plurality of first connection plates (21), the plurality of first connection plates (21) being connected to the first side (231) at intervals, the plurality of first connection plates (21) being electrically connected to the poles (112) of the one ends of the plurality of battery cells (11), respectively;

a plurality of second connecting pieces (22), the second connecting pieces (22) being connected to the second side (232) at a distance from each other, the second connecting pieces (22) being electrically connected to the housings (111) of the cell bodies of the cells (11), respectively.

3. The battery assembly (100) according to claim 2, wherein one end of the first connecting pieces (21) is connected to one side of the intermediate connecting piece (23) far away from the battery module (1), and the other end of the first connecting pieces (21) is electrically connected with the pole (112) of the one end of the battery cells (11); and/or

One end of the second connecting pieces (22) is connected to one side, away from the battery module (1), of the middle connecting piece (23), and the other end of the second connecting pieces (22) is electrically connected with the shells (111) of the battery cell bodies of the battery cells (11).

4. The battery assembly (100) according to claim 3, wherein each of the first connecting pieces (21) comprises a first connecting section (211), a second connecting section (212) and a third connecting section (213), the first connecting section (211) is connected to the intermediate connecting piece (23) at a side away from the battery module (1), one end of the second connecting section (212) is connected to the first connecting section (211), the other end of the second connecting section (212) extends in a direction toward the battery module (1), one end of the third connecting section (213) is connected to the other end of the second connecting section (212), the other end of the third connecting section (213) extends in a direction away from a center of the intermediate connecting piece (23), and the third connecting section (213) is electrically connected to the terminal (112) at the one end of the battery cell (11); and/or

Each second connecting piece (22) comprises a fourth connecting section (221), a fifth connecting section (222) and a sixth connecting section (223), the fourth connecting section (221) is connected to one side, away from the battery module (1), of the middle connecting piece (23), one end of the fifth connecting section (222) is connected with the fourth connecting section (221), the other end of the fifth connecting section (222) extends towards the direction of the battery module (1), one end of the sixth connecting section (223) is connected with the other end of the fifth connecting section (222), the other end of the sixth connecting section (223) extends towards the direction away from the center of the middle connecting piece (23), and the sixth connecting section (223) is electrically connected with the shell (111) of the battery cell body of the battery cell (11).

5. The battery assembly (100) of claim 4, wherein the third connecting section (213) has a width greater than a width of at least one of the first connecting section (211) and the second connecting section (212); and/or

The sixth connecting section (223) has a width greater than a width of at least one of the fourth connecting section (221) and the fifth connecting section (222).

6. The battery assembly (100) of claim 4, wherein the first side (231) is provided with a plurality of first extending portions (24) extending away from the center of the intermediate connecting piece (23), the plurality of first extending portions (24) are arranged at intervals along the arrangement direction, the plurality of first connecting pieces (21) are opposite to the plurality of first extending portions (24), and one ends of the plurality of first connecting sections (211) respectively extend to exceed the plurality of first extending portions (24); and/or

The second side (232) is provided with a plurality of second extending portions (25) extending towards the center far away from the middle connecting piece (23), the second extending portions (25) are arranged at intervals along the arrangement direction, the second connecting pieces (22) are opposite to the second extending portions (25), and one ends of the fourth connecting sections (221) extend to exceed the second extending portions (25) respectively.

7. The battery assembly (100) of claim 4, wherein the length of the fifth connection segment (222) in the length direction of the cell (11) is greater than the length of the second connection segment (212) in the length direction of the cell (11).

8. The battery assembly (100) according to claim 2, wherein the plurality of first connecting pieces (21) and the plurality of second connecting pieces (22) are arranged in a staggered manner in a direction perpendicular to the arrangement direction.

9. The battery assembly (100) according to claim 2, wherein the plurality of first connecting pieces (21) and the plurality of second connecting pieces (22) are each a nickel piece.

10. The battery assembly (100) of claim 1, wherein the pole guide (2) is a flexible circuit board.

11. The battery assembly (100) of claim 1, further comprising:

the battery comprises a plurality of pole connecting pieces (4), the poles (112) at one end of the battery core (11) are connected through the pole connecting pieces (4), and the pole guide plate (2) is connected with the pole connecting pieces (4).

12. The battery assembly (100) of claim 11, wherein the pole guide (2) is welded to a plurality of the pole tabs (4).

13. The battery assembly (100) of claim 1, further comprising:

the battery module comprises a collecting plate (5), wherein the collecting plate (5) is arranged on the battery core sampling plate (3) far away from one side of the battery module (1), and the battery core sampling plate (3) is electrically connected with the collecting plate (5).

14. The battery assembly (100) according to claim 13, wherein the collecting plate (5) is provided with at least one connector (51), and the collecting plate (5) is electrically connected with the cell sampling plate (3) through the connector (51).

15. The battery assembly (100) of claim 13, further comprising:

and the protective cover (6) is covered on one side of the acquisition plate (5) far away from the battery cell sampling plate (3).

16. The battery assembly (100) of claim 1, further comprising:

the cover plate (7) is arranged on one side, far away from the battery module (1), of the pole column guide plate (2).

17. The battery assembly (100) according to claim 1, wherein the electric core group (10) is plural, the plurality of electric cores (11) of each electric core group (10) are arranged at intervals along the thickness direction of the electric cores (11), and the plurality of electric core groups (10) are arranged along the width direction of the electric cores (11);

utmost point post baffle (2) are a plurality of, and are a plurality of utmost point post baffle (2) are established same one end of battery module (1), and are a plurality of utmost point post baffle (2) respectively with a plurality of electric core group (10) a plurality of one end utmost point post (112) and a plurality of electric core (11) the electricity of electricity core body casing (111) electricity is connected.

18. The battery assembly (100) of any of claims 1-17, wherein each of the cells (11) has a length L, each of the cells (11) has a width W, and each of the cells (11) has a thickness H, wherein L, W, and H satisfy: l is more than or equal to 675mm and less than or equal to 695mm, W is more than or equal to 84.5mm and less than or equal to 95.8mm, H is more than or equal to 11.2mm and less than or equal to 16.2mm.

19. An energy storage device (200) characterized by comprising a battery assembly (100) according to any one of claims 1-18.

20. An energy storage device control system (300), comprising:

-a plurality of energy storage devices (200), the plurality of energy storage devices (200) being connected in parallel, each energy storage device (200) comprising a battery management system (201), the energy storage device (200) being an energy storage device (200) according to any of claim 19;

a battery management unit (301), wherein the battery management unit (301) is in communication connection with each of the battery management systems (201) in the plurality of energy storage devices (200).

21. The energy storage device control system (300) according to claim 20, wherein each energy storage device (200) further comprises a battery information collector (302), and the battery information collector (302) is communicatively connected with the battery management system (201).

22. The energy storage device control system (300) of claim 20, further comprising:

an energy management system (303) or inverter, the energy management system (303) or inverter being communicatively coupled to the battery management unit (301).

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