CN214848949U - Battery assembly - Google Patents
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- CN214848949U CN214848949U CN202120009605.2U CN202120009605U CN214848949U CN 214848949 U CN214848949 U CN 214848949U CN 202120009605 U CN202120009605 U CN 202120009605U CN 214848949 U CN214848949 U CN 214848949U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model relates to a battery assembly. The battery assembly includes: the battery pack includes a first battery module having a terminal, a second battery module having a terminal, and a conductive connecting member electrically connecting the terminal of the first battery module and the terminal of the second battery module, the first battery module and the second battery module being connected to each other. The battery modules of the battery assembly are firmly connected and are not easy to fall off, and the overall structure of the battery assembly is compact.
Description
Technical Field
The present invention relates generally to the field of batteries, and more particularly to a battery assembly structure in which a plurality of batteries (e.g., horizontal batteries) are stacked one on another and connected in series or in parallel.
Background
In the modern society, batteries have been widely used in various fields. The types of batteries are also varied depending on the application. Among them, a horizontal battery, which is one of the stack type batteries, is generally used as a large-capacity battery because it can include a plurality of cells, and is applicable to starting of vehicles such as automobiles, ships, and airplanes, and various fields such as energy storage, backup power, and forklift trucks.
Since the horizontal battery has a fixed output voltage, when the horizontal battery needs to be supplied to a device requiring a higher voltage, the positive electrodes and the negative electrodes of the horizontal batteries can be connected in series with each other to form a battery with multiple output voltages. If two 8-volt horizontal batteries are connected in series, 16 volts can be output, and if three 8-volt horizontal batteries are connected in series, 24 volts can be output. If a large output current is needed for the equipment, the anodes of a plurality of horizontal batteries can be connected, and the cathodes are also connected (in parallel), so that the output capacitance is multiplied by the original capacitance. But the output voltage is unchanged.
In the prior art, when a plurality of batteries are required to be connected in series or in parallel with each other, the plurality of batteries are usually simply stacked and the external terminals of the plurality of batteries are electrically connected by wires. In such a configuration, the plurality of batteries are not fixedly connected to each other, and thus there is no stable structure. In this case, the plurality of cells are liable to unnecessarily move relative to each other, causing difficulty in stacking one another; further, since the external terminals of the plurality of batteries are connected by the wires, the wires may be detached from the terminals or damaged by the movement of the batteries.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the above-mentioned problem among the prior art at least, provide such battery assembly, it includes a plurality of series connection or parallelly connected battery module, firm in connection between each battery module is difficult for droing, and battery assembly's overall structure is compact.
According to an aspect of the present invention, there is provided a battery assembly comprising: the battery pack includes a first battery module having a first terminal, a second battery module having a first terminal, and an electrically conductive connector electrically connecting the first terminal of the first battery module and the first terminal of the second battery module, the electrically conductive connector configured to couple the first battery module and the second battery module to one another.
According to another aspect of the present invention, there is provided a battery assembly, comprising: a first battery module, a second battery module disposed side-by-side with the first battery module and electrically connected with the first battery module, and a coupling member configured to maintain a positional relationship of the first battery module and the second battery module with respect to each other.
According to the battery assembly provided by the utility model, two or more battery modules are connected together through the conductive connecting piece, so that the two or more battery modules can be stably stacked in a horizontal or vertical mode and connected in series or in parallel, and the formed battery assembly has firm and stable structure and is not easy to be damaged; and the connection mode is simple.
Drawings
For better understanding of the nature of some embodiments of the present invention and the technical problems to be solved thereby, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numerals refer to like components unless the context clearly dictates otherwise.
Fig. 1A is a schematic perspective view of a battery assembly according to an embodiment of the present invention.
FIG. 1B is another perspective view of the battery assembly of the embodiment shown in FIG. 1A.
Fig. 1C is an exploded perspective view of the battery assembly of the embodiment shown in fig. 1A.
Fig. 1D is another exploded perspective view of the battery assembly of the embodiment shown in fig. 1A.
Fig. 2A is a schematic perspective view of a battery assembly according to another embodiment of the present invention.
Fig. 2B is another perspective view of the battery assembly of the embodiment shown in fig. 2A.
Fig. 2C is an exploded perspective view of the battery assembly of the embodiment shown in fig. 2A.
Fig. 2D is another exploded perspective view of the battery assembly of the embodiment shown in fig. 2A.
Fig. 3A, 3B, 3C, 3D, 3E, 3F, 3G illustrate a method of making a battery assembly according to some embodiments of the present invention.
Fig. 4A is a schematic perspective view of a battery assembly according to another embodiment of the present invention.
Fig. 4B is another perspective view of the battery assembly of the embodiment shown in fig. 4A.
Fig. 4C is an exploded perspective view of the battery assembly of the embodiment shown in fig. 4A.
Fig. 4D is another exploded perspective view of the battery assembly of the embodiment shown in fig. 4A.
Fig. 5A, 5B, 5C, 5D, 5E, 5F, 5G illustrate a method of making a battery assembly according to some embodiments of the present invention.
Fig. 6A is a schematic perspective view of a battery assembly according to another embodiment of the present invention.
Fig. 6B is another perspective view of the battery assembly of the embodiment shown in fig. 6A.
Fig. 6C is an exploded perspective view of the battery assembly of the embodiment shown in fig. 6A.
Fig. 6D is another exploded perspective view of the battery assembly of the embodiment shown in fig. 6A.
Fig. 7A, 7B, 7C, 7D, 7E, 7F, 7G illustrate methods of making battery assemblies according to some embodiments of the present invention.
Fig. 8A is a schematic perspective view of a battery assembly according to still another embodiment of the present invention.
Fig. 8B is another perspective view of the battery assembly of the embodiment shown in fig. 8A.
Fig. 8C is an exploded perspective view of the battery assembly of the embodiment shown in fig. 8A.
Fig. 8D is another exploded perspective view of the battery assembly of the embodiment shown in fig. 8A.
Fig. 9A, 9B, 9C, 9D, 9E, 9F, 9G illustrate methods of making battery assemblies according to some embodiments of the present invention.
Detailed Description
The following disclosure provides many different embodiments or examples for implementing different features of the provided objects (battery assemblies). Only some specific examples are described below. Of course, these are merely examples and are not intended to be limiting. In the present disclosure, for example, reference to a first feature being formed on or over a second feature may include: embodiments in which the first feature is formed in direct contact with the second feature, and embodiments including additional features formed between the first feature and the second feature such that the first feature and the second feature may not be in direct contact. In addition, the present disclosure may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
Embodiments of the present invention are discussed in detail below. It should be appreciated, however, that the present invention provides many applicable concepts that can be embodied in a wide variety of specific contexts. The particular embodiments discussed are merely illustrative and do not limit the scope of the invention.
Since the horizontal battery has a fixed output voltage, when the horizontal battery needs to be supplied to a device requiring a higher voltage, the positive electrodes and the negative electrodes of the horizontal batteries can be connected in series with each other to form a battery with multiple output voltages. If two 8-volt horizontal batteries are connected in series, 16 volts can be output, and if three 8-volt horizontal batteries are connected in series, 24 volts can be output. If a large output current is needed for the equipment, the anodes of a plurality of horizontal batteries can be connected, and the cathodes are also connected (in parallel), so that the output capacitance is multiplied by the original capacitance. But the output voltage is unchanged.
However, in the prior art, when a plurality of batteries are connected in series or in parallel, the batteries are usually simply stacked and the external terminals of the batteries are electrically connected by wires. In such a configuration, the batteries are not fixedly connected to each other, so that the batteries are likely to move unnecessarily to destroy the stacking relationship between the batteries, and the wires are connected to the external terminals of the batteries, and the wires may fall off the terminals due to the movement between the batteries, thereby causing damage.
The present invention aims to improve the combination of the horizontal batteries to solve the above problems.
Fig. 1A, 1B, 1C, 1D show a horizontal battery assembly 1 according to an embodiment of the present invention. The horizontal battery assembly 1 includes two battery modules 11 and 12 connected in series, in some embodiments of the present invention, the battery modules 11 and 12 can output 8 volts respectively, and the horizontal battery assembly 1 formed by connecting the battery modules 11 and 12 in series can output 16 volts.
In some embodiments of the present invention, the battery modules 11 and 12 are stacked on each other in a horizontal state; the side surface 113 of the battery module 11 and the side surface 123 of the battery module 12 are disposed to face each other, and the connection cover 15 is disposed between the side surface 113 of the battery module 11 and the side surface 123 of the battery module 12; in certain embodiments of the present invention, the connection cover 15 is configured (i.e., by designing its shape and size, the same applies hereinafter) to be tightly coupled with the side surfaces 113 of the battery modules 11 and the side surfaces 123 of the battery modules 12 (i.e., by designing the connection cover 15 in shape and size so that it is tightly coupled with the side surfaces 113 of the battery modules 11 and the side surfaces 123 of the battery modules 12). Therefore, the battery modules 11 and 12 stacked one on another may be fixed in a connected relationship with each other via the connection cover 15. For example, the connection cover 15 is fixed between the battery modules 11 and 12 by means of bonding, heat-sealing, or the like, thereby fixing the battery modules 11 and 12 together. In other words, the connection cover 15 is configured and/or fixed by other fixing means (bonding or heat-sealing process, etc.) to maintain the positional relationship of the battery modules 11 and 12 stacked one on another with respect to each other.
As shown in fig. 1A and 1B, the battery modules 11 and 12 are tightly connected to each other so as to form an integral type. Further, the battery modules 11 and 12 of the horizontal battery assembly 1 are fixedly connected to each other so that the horizontal battery assembly 1 has a fixed configuration.
The battery module 11 has an external connection terminal 111 and a connection terminal 112, the external connection terminal 111 and the connection terminal 112 have different polarities from each other, in some embodiments, the external connection terminal 111 may be a positive terminal, and the connection terminal 112 may be a negative terminal. As shown in fig. 1C and 1D, the connection terminal 112 may be disposed on the end surface 115, and the external connection terminal 111 may be disposed on the top surface 116 and near the end surface 117. Generally, the external connection terminal 111 and the connection terminal 112 of the battery module 11 are disposed at opposite ends of the battery module 11, respectively. The battery module 12 has an external connection terminal 121 and a connection terminal 122, the external connection terminal 121 and the connection terminal 122 have different polarities from each other, in some embodiments, the external connection terminal 121 may be a negative terminal, and the connection terminal 122 may be a positive terminal. As shown in fig. 1C and 1D, the connection terminal 122 may be disposed on the end surface 125, and the external connection terminal 121 may be disposed on the top surface 126 and near the end surface 117, in general, the external connection terminal 121 and the connection terminal 122 of the battery module 12 are disposed at two opposite ends of the battery module 12, respectively.
In the embodiment shown in fig. 1A-1D, the battery modules 11 and 12 of the battery assembly 1 are connected in series with each other, i.e., the connection terminals 112 of the battery modules 11 and the connection terminals 122 of the battery modules 12 have different polarities from each other, and in some embodiments, the connection terminals 112 of the battery modules 11 are negative terminals and the connection terminals 122 of the battery modules 12 are positive terminals. The battery assembly 1 further has a conductive connecting member 13 electrically connecting the connection terminal 112 of the battery module 11 and the connection terminal 122 of the battery module 12 with each other, and the battery module 11 and the battery module 12 are connected in series with each other via the conductive connecting member 13. The battery modules 11 and 12 connected in series can output a voltage of the sum of the voltages of the two battery modules 11 and 12 from the external terminals 111 and 121.
In some embodiments of the present disclosure, the conductive connection 13 substantially connects the end surface 115 of the battery module 11 and the end surface 125 of the battery module 12 and extends over the end surface 115 of the battery module 11 and the end surface 125 of the battery module 12. In some embodiments of the present invention, the conductive connecting member 13 is a rigid conductive connecting member, such as a copper sheet. Therefore, the battery modules 11 and 12 are connected and fixedly disposed to each other so that the rigid conductive connection members 13 are connected to the connection terminals 112 of the battery modules 11 and the connection terminals 122 of the battery modules 12. In some embodiments of the present invention, the conductive connector 13 is a flexible conductive connector configured to allow some play between the battery module 11 and the battery module 12 (i.e., even if there is some play between the battery module 11 and the battery module 12, the flexible conductive connector 13 can still achieve electrical connection therebetween).
In some embodiments of the present invention, the battery assembly 1 further has a protective cover 131 configured to cover the conductive connecting member 13, and the protective cover 131 can protect the conductive connecting member 13 from being damaged by the external environment.
Fig. 2A, 2B, 2C, 2D show a horizontal battery assembly 2 according to another embodiment of the present invention. Horizontal battery assembly 2 is including three battery module 21, 22 and 23 that establish ties each other, in certain embodiments of the utility model, battery module 21, battery module 22 and battery module 23 can export the voltage of 8 volts respectively, then can export the voltage of 24 volts through the horizontal battery assembly 2 that battery module 21, battery module 22 and battery module 23 establish ties each other and constitute.
In some embodiments of the present invention, the battery modules 21, 22 and 23 are stacked on each other in a horizontal state; the side surface 213 of the battery module 21 and the side surface 223 of the battery module 22 are disposed to face each other, and the connection cover 251 is disposed between the side surface 213 of the battery module 21 and the side surface 223 of the battery module 22; in some embodiments of the present invention, the connection cover 251 is configured to be tightly coupled with the side surface 213 of the battery module 21 and the side surface 223 of the battery module 22. Therefore, the battery modules 21 and 22 stacked one on another may be fixed in a connected relationship with each other via the connection cover 251. In some embodiments of the present invention, the side surface 224 of the battery module 22 and the side surface 233 of the battery module 23 are disposed to face each other, and the connection cover 252 is disposed between the side surface 224 of the battery module 22 and the side surface 233 of the battery module 23; in some embodiments of the present invention, the connection cover 252 is configured to be tightly coupled with the side surface 224 of the battery module 22 and the side surface 233 of the battery module 23, and thus, the battery module 22 and the battery module 23 stacked on each other may be fixed in a coupling relationship with each other via the connection cover 252. In other words, the connection covers 251 and 252 are configured to maintain the positional relationship of the battery modules 21, 22, and 23 stacked one on another with respect to one another.
As shown in fig. 2A and 2B, the battery module 21, the battery module 22 and the battery module 23 are tightly connected to each other so as to form an integral configuration. Further, the battery modules 21, 22 and 23 of the horizontal battery assembly 2 are fixedly connected to each other so that the horizontal battery assembly 2 has a fixed configuration.
The battery module 21 has an external connection terminal 212 and a connection terminal 211, and the external connection terminal 212 and the connection terminal 211 have different polarities from each other. In some embodiments, the external connection terminal 212 may be a positive terminal, and the connection terminal 211 may be a negative terminal. As shown in fig. 2C and 2D, the connection terminal 211 may be disposed on the end surface 217, and the external connection terminal 212 may be disposed on the top surface 216 and near the end surface 215. Generally, the external connection terminal 212 and the connection terminal 211 of the battery module 21 are disposed at opposite ends of the battery module 21, respectively. The battery module 22 has a connection terminal 221 and a connection terminal 222, and the connection terminal 221 and the connection terminal 222 have different polarities from each other. In some embodiments, the connection terminal 221 may be a positive terminal and the connection terminal 222 may be a negative terminal. As shown in fig. 2C and 2D, the connection terminal 222 may be disposed on the end surface 225, and the connection terminal 221 may be disposed on the end surface 227. Generally, the connection terminals 221 and 222 of the battery module 22 are disposed at opposite ends of the battery module 22, respectively. The battery module 23 has an external terminal 231 and a connection terminal 232, and the external terminal 231 and the connection terminal 232 have different polarities from each other, in some embodiments, the external terminal 231 may be a negative terminal, and the connection terminal 232 may be a positive terminal. As shown in fig. 2C and 2D, the connection terminal 232 may be disposed on the end surface 235, and the external connection terminal 231 may be disposed on the top surface 236 and near the end surface 237. Generally, the external connection terminal 231 and the connection terminal 232 of the battery module 23 are disposed at opposite ends of the battery module 23, respectively.
In the embodiment shown in fig. 2A to 2D, the battery modules 21, 22, and 23 of the battery assembly 2 are connected in series with each other, that is, the connection terminals 211 of the battery module 21 and the connection terminals 221 of the battery module 22 have polarities different from each other. In some embodiments, the connection terminal 211 of the battery module 21 is a negative terminal and the connection terminal 221 of the battery module 22 is a positive terminal. The battery assembly 2 further has a conductive connection member 291 electrically connected to the connection terminal 211 of the battery module 21 and the connection terminal 221 of the battery module 22, and the battery module 21 and the battery module 22 are connected in series to each other via the conductive connection member 291. Furthermore, the polarity of the connection terminal 222 of the battery module 22 and the polarity of the connection terminal 232 of the battery module 23 need to be different from each other, and in some embodiments, the connection terminal 222 of the battery module 22 is a negative terminal and the connection terminal 232 of the battery module 23 is a positive terminal. Similarly, the battery assembly 2 further has a conductive connector 293 electrically connecting the connection terminal 222 of the battery module 22 and the connection terminal 232 of the battery module 23, and the battery module 22 and the battery module 23 are connected in series via the conductive connector 293. The battery modules 21, 22 and 23 connected in series can output the sum of the voltages of the three battery modules 21, 22 and 23 from the external terminals 212 and 231.
In some embodiments of the present disclosure, the conductive connection 291 substantially connects the end 217 of the battery module 21 and the end 227 of the battery module 22 and extends over the end 217 of the battery module 21 and the end 227 of the battery module 22. In some embodiments of the present disclosure, the conductive connector 293 substantially connects the end surface 225 of the battery module 22 and the end surface 235 of the battery module 23 and extends over the end surface 225 of the battery module 22 and the end surface 235 of the battery module 23. In some embodiments of the present invention, the conductive connection 291, 292 is a rigid conductive connection, such as a copper sheet. Therefore, the battery module 21, the battery module 22, and the battery module 23 need to be connected and fixedly disposed to each other so that the rigid conductive connection member 291 is connected to the connection terminal 211 of the battery module 21 and the connection terminal 221 of the battery module 22, and the rigid conductive connection member 293 is connected to the connection terminal 222 of the battery module 22 and the connection terminal 232 of the battery module 23. In some embodiments of the present invention, the conductive connection member 291, 292 is a flexible conductive connection member configured to allow looseness between the battery module 21, the battery module 22 and the battery module 23 (i.e., the flexible conductive connection member 291, 292 can still achieve electrical connection between the battery modules 21, 22 and 23 even if there is some looseness between the three components).
In some embodiments of the present invention, the battery assembly 2 further has protective covers 292, 294 configured to cover the conductive connectors 291 and 293, respectively, and the protective covers 292 and 294 can protect the conductive connectors 291 and 293 from the external environment.
Fig. 3A, 3B, 3C, 3D, 3E, 3F, and 3G illustrate a method of manufacturing a battery assembly 2 according to some embodiments of the present invention.
As shown in fig. 3A, a battery cell 210 is provided, a connection terminal 211 is led out from the battery cell 210 and formed on an end surface 2101 of the battery cell 210, an external connection terminal 212 having a different polarity from the connection terminal 211 is led out from the battery cell 210 and formed on a top surface 2102 of the battery cell 210, and the external connection terminal 212 is adjacent to the other end surface of the battery cell 210 opposite to the end surface 2101. For the internal structure and manufacturing process of the battery cell, reference may be made to the related contents disclosed in chinese patent applications CN202010353387.4, CN202011043045.9, and CN202011195672.4 (the same below).
As shown in fig. 3B, housing 2105 is formed over battery cell 210 (e.g., battery cell 210 is placed as an insert in a mold for injection molding, such that housing 2105 is formed directly over battery cell 210, as described above), such that it substantially surrounds battery cell 210, to form battery module 21; the connection terminals 211 and the external terminals 212 led out from the battery cell 210 are exposed from the housing 2105, so that the end surface 217 of the battery module 21 is provided with the connection terminals 211, and the top surface 216 of the battery module 21 is provided with the external terminals 212 (see fig. 2A, 2B, 2C, and 2D).
As shown in fig. 3C, a battery cell 220 is provided, a connection terminal 221 is led out from the battery cell 220 and formed on an end surface 2201 of the battery cell 220, and another connection terminal 222 having a different polarity from the connection terminal 221 is led out from the battery cell 220 and formed on another end surface (not shown) of the battery cell 220 opposite to the end surface 2201.
As shown in fig. 3D, a case 2205 is formed on the battery cell 220 so as to substantially surround the battery cell 220 to manufacture a battery module 22; and the connection terminals 221 and 222 led out from the battery cell 220 are exposed from the case 2205; the battery module 22 thus manufactured has connection terminals 221 on its end face 227, and the battery module 22 has connection terminals 222 on its end face 225 (see fig. 2A, 2B, 2C, and 2D).
As shown in fig. 3E, a battery cell 230 is provided, an external connection terminal 231 is led out from the battery cell 230 and formed on a top surface 2301 of the battery cell 230, and adjacent to an end surface 2302 of the battery cell 230, and a connection terminal 232 having a different polarity from the external connection terminal 231 is led out from the battery cell 230 and formed on the other end surface (not shown) of the battery cell 230 opposite to the end surface 2302.
As shown in fig. 3F, a case 2305 is formed on the battery cell 230 so as to substantially surround the battery cell 230 to make the battery module 23; the external connection terminal 231 and the connection 232 led out from the battery cell 230 are exposed from the case 2305; thus, the battery module 23 is formed with the external connection terminal 231 on the top surface 236 and the connection terminal 232 on the end surface 235 (see fig. 2A, 2B, 2C and 2D).
As shown in fig. 3G, the battery modules 21, 22, 23 are assembled laterally side by side with each other. Disposing a connection cover 251 between the battery module 21 and the battery module 22, the connection cover 251 being configured to configure the battery module 21 and the battery module 22 to be connected to each other and to fix the relative positions of the battery module 21 and the battery module 22 to each other; a connection cover 252 is disposed between the battery modules 22 and 23, the connection cover 252 being configured to couple the battery modules 22 and 23 to each other and to fix the relative positions of the battery modules 22 and 23 to each other. Further, the caps 271 and 272 are mounted to the battery modules 21 and 23, respectively, such that the caps 271 and 272 and the connection covers 251 and 252 can seal the interiors of the battery modules 21, 22 and 23.
Connecting the conductive connection member 291 with the connection terminal 211 of the battery module 21 and the connection terminal 221 of the battery module 22 so that the battery module 21 and the battery module 22 are electrically connected to each other; the connection terminals 211 and 221 of the battery modules 21 and 22 are different in polarity from each other, and thus the conductive connection members 291 allow the battery modules 21 and 22 to be connected in series with each other.
Connecting the conductive connecting member 293 with the connection terminal 222 of the battery module 22 and the connection terminal 232 of the battery module 23 (refer to fig. 2C and 2D further), so that the battery module 22 and the battery module 23 are electrically connected to each other; the connection terminals 222 of the battery modules 22 and the connection terminals 232 of the battery modules 23 are different in polarity from each other, and thus the conductive connectors 293 connect the battery modules 22 and the battery modules 23 in series with each other.
In addition, protective covers 292 and 294 are further provided to cover the conductive connectors 291 and 293, respectively, and the protective covers 292 and 294 may protect the conductive connectors 291 and 293 from the external environment.
Fig. 4A, 4B, 4C, 4D show a horizontal battery assembly 3 according to yet another embodiment of the present invention. The horizontal battery assembly 3 illustrated in fig. 4A, 4B, 4C, and 4D includes three battery modules 31, 32, and 33 connected in parallel.
In some embodiments of the present invention, the battery modules 31, 32, and 33 are stacked on each other in a horizontal state; the side surface 313 of the battery module 31 and the side surface 323 of the battery module 32 are disposed to face each other, and the connection cover 351 is disposed between the side surface 313 of the battery module 31 and the side surface 323 of the battery module 32; in certain embodiments of the present invention, the connection cover 351 is configured to be tightly coupled with the side surface 313 of the battery module 31 and the side surface 323 of the battery module 32. Accordingly, the battery modules 31 and 32 stacked one on another may fix the connection relationship with each other via the connection cover 351. In some embodiments of the present invention, the side surface 324 of the battery module 32 and the side surface 333 of the battery module 33 are disposed to face each other, and the connection cap 352 is disposed between the side surface 324 of the battery module 32 and the side surface 333 of the battery module 33. In certain embodiments of the present invention, the connection cap 352 is configured to be tightly coupled with the side surface 324 of the battery module 32 and the side surface 333 of the battery module 33. Accordingly, the battery modules 32 and 33 stacked one on another may be fixed in a connected relationship with each other via the connection cover 352. In other words, the connection covers 351 and 352 are configured to maintain the positional relationship of the battery modules 31, 32, and 33 stacked one on another with respect to one another.
As shown in fig. 4A and 4B, the battery module 31, the battery module 32, and the battery module 33 are tightly coupled to each other so as to form an integral type. Further, the battery modules 31, 32 and 33 of the horizontal battery assembly 3 are fixedly connected to each other such that the horizontal battery assembly 3 has a fixed configuration.
In the embodiment shown in fig. 4A, 4B, 4C, and 4D, battery module 31 has end face 315, end face 317 opposite end face 315, and top face 316 connecting end face 315 and end face 317, battery module 32 has end face 325, end face 327 opposite end face 325, and top face 326 connecting end face 325 and end face 327, and battery module 33 has end face 335, end face 337 opposite end face 335, and top face 336 connecting end face 335 and end face 337. In some embodiments of the present disclosure, the end face 315 of the battery module 31, the end face 325 of the battery module 32, and the end face 335 of the battery module 33 are adjacent to each other and are located on the same plane; in certain embodiments of the present disclosure, the end face 317 of the battery module 31, the end face 327 of the battery module 32, and the end face 335 of the battery module 33 are adjacent to each other and located on the same plane; in certain embodiments of the present disclosure, top surface 316 of battery module 31, top surface 326 of battery module 32, and top surface 336 of battery module 33 are adjacent to each other and lie on the same plane. In certain embodiments of the present disclosure, horizontal battery assembly 3 further has cover plates 371 and 372, battery module 31 has another side surface 314 opposite to side surface 313 of battery module 31, battery module 33 has another side surface 334 opposite to side surface 333 of battery module 33, cover plate 371 is configured to interconnect with side surface 314 of battery module 31 and cover side surface 314 of battery module 31, and cover plate 372 is configured to interconnect with side surface 334 of battery module 33 and cover side surface 334 of battery module 33. In some embodiments of the present invention, the cover plates 371, 372 and the connection covers 351, 352 are configured such that the inside of the battery module 31, the inside of the battery module 32, and the inside of the battery module 33 are in a sealed state.
In the embodiment shown in fig. 4A, 4B, 4C, and 4D, the battery module 31 has a connection terminal 311 and a connection terminal 312, the external connection terminal 311 and the connection terminal 312 have different polarities from each other, and in some embodiments, the connection terminal 311 may be a negative terminal and the connection terminal 312 may be a positive terminal. As shown in fig. 4A and 4C, the connection terminal 311 may be disposed on the top surface 316 near the end surface 317, and the connection terminal 312 may be disposed on the top surface 316 near the end surface 315 opposite to the end surface 317, in general, the connection terminals 311 and 312 of the battery module 31 are disposed at opposite ends of the battery module 31, respectively. The battery module 32 has a connection terminal 321 and a connection terminal 322, the connection terminal 321 and the connection terminal 322 have different polarities from each other, in some embodiments, the connection terminal 321 may be a negative terminal, and the connection terminal 322 may be a positive terminal. As shown in fig. 4A and 4C, the connection terminal 321 may be disposed on the top surface 326 and near the end surface 327, and the connection terminal 322 may be disposed on the top surface 326 and near the end surface 325 opposite to the end surface 327, in general, the connection terminal 321 and the connection terminal 322 of the battery module 32 are disposed at two opposite ends of the battery module 32, respectively. The battery module 33 has a connection terminal 331 and a connection terminal 332, the connection terminals 331 and 232 have different polarities from each other, and in some embodiments, the connection terminal 331 may be a negative terminal and the connection terminal 332 may be a positive terminal. As shown in fig. 4A and 4C, the connection terminal 331 may be disposed on the top surface 336 near the end surface 337, and the connection terminal 332 may be disposed on the top surface 336 near the end surface 335 opposite to the end surface 337, generally, the connection terminal 331 and the connection terminal 332 of the battery module 33 are disposed at opposite ends of the battery module 33, respectively.
In the embodiment shown in fig. 4A, 4B, 4C, 4D, the battery modules 31, 32, and 33 of the battery assembly 3 are connected in parallel with each other, i.e., the polarities of the connection terminal 311 of the battery module 31, the connection terminal 321 of the battery module 32, and the connection terminal 331 of the battery module 33 are the same as each other, and the polarities of the connection terminal 312 of the battery module 31, the connection terminal 322 of the battery module 32, and the connection terminal 332 of the battery module 33 are the same as each other. In some embodiments, the connection terminal 311 of the battery module 31, the connection terminal 321 of the battery module 32, and the connection terminal 331 of the battery module 33 are all negative terminals, and the connection terminal 312 of the battery module 31, the connection terminal 322 of the battery module 32, and the connection terminal 332 of the battery module 33 are all positive terminals. The battery assembly 3 further has conductive connection members 38 and 39, the conductive connection member 38 being configured to electrically connect the connection terminal 312 of the battery module 31, the connection terminal 322 of the battery module 32, and the connection terminal 332 of the battery module 33 to each other, and the conductive connection member 39 being configured to electrically connect the connection terminal 311 of the battery module 31, the connection terminal 321 of the battery module 32, and the connection terminal 331 of the battery module 33 to each other; thus, the battery modules 31, 32, and 33 are connected in parallel with each other via the conductive connecting members 38 and 39. In some embodiments of the present invention, the battery modules 31, 32 and 33 connected in parallel may be connected to an external member from the protruding portion 381 of the conductive connecting member 38 and the protruding portion 39 of the conductive connecting member 39 to output power to the outside.
In some embodiments of the present disclosure, the conductive connectors 38, 39 substantially connect the top surface 316 of the battery module 31, the top surface 326 of the battery module 32, and the top surface 336 of the battery module 33 and extend over the top surface 316 of the battery module 31, the top surface 326 of the battery module 32, and the top surface 336 of the battery module 33. In some embodiments of the present invention, the conductive connector 38, 39 is a rigid conductive connector, such as a copper sheet. Therefore, the battery modules 31, 32 and 33 are connected and fixed to each other so that the rigid conductive connecting members 38 are connected to the connection terminals 312, 322 and 332 of the battery modules 31, 32 and 33 and the rigid conductive connecting members 39 are connected to the connection terminals 311, 321 and 331 of the battery modules 31, 32 and 33. In some embodiments of the present invention, the conductive connecting member 38, 39 is a flexible conductive connecting member configured to allow some play between the battery module 31, the battery module 32 and the battery module 33 (i.e., even if there is some play between the battery modules 31, 32, 33, the flexible conductive connecting member 38, 39 can still achieve electrical connection between the three).
Fig. 5A, 5B, 5C, 5D, 5E, 5F, and 5G illustrate a method of manufacturing a battery assembly 3 according to some embodiments of the present invention.
As shown in fig. 5A, a battery cell 310 is provided, a connection terminal 311 is led out from the battery cell 310 and formed on a top surface 3101 of the battery cell 310, and an external connection terminal 312 having a different polarity from the connection terminal 311 is led out from the battery cell 310 and formed on the top surface 3101 of the battery cell 310; the connection terminal 311 is adjacent to an end surface 3103 of the battery cell 310, and the connection terminal 312 is adjacent to the other end surface of the battery cell 310 opposite to the end surface 3103. For the internal structure and manufacturing process of the battery cell, reference may be made to the related contents disclosed in chinese patent applications CN202010353387.4, CN202011043045.9, and CN202011195672.4 (the same below).
As shown in fig. 5B, a case 3105 is formed over the battery cell 310 (for example, the case 3105 is directly formed over the battery cell 310 by injection molding the battery cell 310 as an insert in a mold) so as to substantially surround the battery cell 310 to manufacture a battery module 31; the connection terminals 311 and 312 led out from the battery core 310 are exposed from the case 3105, and thus the battery module 31 is completed with the connection terminals 311 and 312 disposed opposite to each other on the top surface 316.
As shown in fig. 5C, a battery cell 320 is provided, wherein a connection terminal 321 is led out from the battery cell 320 and formed on a top surface 3201 of the battery cell 320, and an external connection terminal 322 having a different polarity from the connection terminal 321 is led out from the battery cell 320 and formed on the top surface 3201 of the battery cell 320; connection terminal 321 is adjacent to end surface 3203 of battery cell 320, and connection terminal 322 is adjacent to the other end surface of battery cell 320 opposite to end surface 3203.
As shown in fig. 5D, a case 3205 is formed on the battery cell 320 so as to substantially surround the battery cell 320 to manufacture the battery module 32; the connection terminals 321 and 322 led from the battery core 320 are exposed from the case 3105, and thus the battery module 32 is manufactured to have the connection terminals 321 and 322 disposed opposite to each other on the top surface 326 thereof.
As shown in fig. 5E, a battery cell 330 is provided, a connection terminal 331 is led out from the battery cell 330 and formed on the top surface 3301 of the battery cell 330, and an external connection terminal 332 having a different polarity from the connection terminal 331 is led out from the battery cell 330 and formed on the top surface 3301 of the battery cell 330; connection terminal 331 is adjacent to end face 3303 of battery cell 330, and connection terminal 332 is adjacent to the other end face of battery cell 330 opposite to end face 3303.
As shown in fig. 5F, a case 3305 is formed on the battery cell 330 so as to substantially surround the battery cell 330 to make the battery module 33; the connection terminals 331 and 332 drawn from the battery cell 330 are exposed from the case 3305, and thus the finished battery module 33 has the connection terminals 331 and 332 disposed opposite to each other on the top surface 336 thereof.
As shown in fig. 5G, the battery modules 31, 32, 33 are assembled laterally side by side with each other. Providing a connection cover 351 between the battery module 31 and the battery module 32, the connection cover 351 being configured to configure the battery module 31 and the battery module 32 to be connected to each other and to fix the relative positions of the battery module 31 and the battery module 32 to each other; a connection cover 352 is disposed between the battery modules 32 and 33, the connection cover 352 being configured to couple the battery modules 32 and 33 to each other and to fix the relative positions of the battery modules 32 and 33 to each other. Further, the cap plates 371 and 372 are mounted to the battery modules 31 and 33, respectively, such that the cap plates 371 and 372 and the connection caps 351 and 352 allow the interiors of the battery modules 31, 32 and 33 to be sealed.
Subsequently, the conductive connection member 39 is connected with the connection terminal 311 of the battery module 31, the connection terminal 321 of the battery module 32, and the connection terminal 331 of the battery module 33, and the conductive connection member 38 is connected with the connection terminal 312 of the battery module 31, the connection terminal 322 of the battery module 32, and the connection terminal 332 of the battery module 33, such that the battery module 31, the battery module 32, and the battery module 33 are electrically connected with each other; the connection terminal 311 of the battery module 31, the connection terminal 321 of the battery module 32, and the connection terminal 331 of the battery module 33 have the same polarity as each other, and the connection terminal 312 of the battery module 31, the connection terminal 322 of the battery module 32, and the connection terminal 332 of the battery module 33 have the same polarity as each other, so the conductive connection members 38, 39 connect the battery module 31, the battery module 32, and the battery module 33 in parallel with each other. In some embodiments of the present invention, conductive connection element 38 has protrusion 381, and conductive connection element 39 has protrusion 391, and protrusions 381 and 391 are configured to allow battery assembly 3, which is assembled from battery module 31, battery module 32, and battery module 33, to output power outwardly.
In some embodiments of the present invention, the conductive connector 38, 39 is a rigid conductive connector. Therefore, after the connection terminals 312, 322, and 332 of the battery modules 31, 32, and 33 are connected to each other via the rigid conductive connecting members 38, and the connection terminals 311, 321, and 331 of the battery modules 31, 32, and 33 are connected to each other via the rigid conductive connecting members 39, the battery modules 31, 32, and 33 are connected to each other by the constraint of the rigid conductive connecting members 38 and 39, and the relative positional relationship between the battery modules is fixed. In some embodiments of the present invention, the conductive connecting member 38, 39 is a flexible conductive connecting member, which can allow the battery module 31, the battery module 32 and the battery module 33 to be loosened from each other (i.e., even if there is some looseness between the battery modules 31, 32, 33, the flexible conductive connecting member 38, 39 can still achieve electrical connection between the three).
Fig. 6A, 6B, 6C, 6D show a horizontal battery assembly 5 according to yet another embodiment of the present invention. The horizontal battery assembly 5 includes three battery modules 51, 52 and 53 connected in series, and in some embodiments of the present invention, the battery modules 51, 52 and 53 can output a voltage of 8 volts, respectively, and the horizontal battery assembly 5 formed by connecting the battery modules 51, 52 and 53 in series can output a voltage of 24 volts.
In some embodiments of the present invention, the battery modules 51, 52 and 53 are stacked on each other in a vertical state; the bottom surface 514 of the battery module 51 and the top surface 523 of the battery module 52 are disposed to face each other, and the bottom surface 524 of the battery module 52 and the top surface 533 of the battery module 53 are disposed to face each other. Battery module 51 has a side 516, battery module 52 has a side 526, and battery module 53 has a side 536. In certain embodiments of the present invention, sides 516, 526, and 536 are configured to be disposed proximate to each other and to lie in the same plane; similarly, the other side 518 of the opposite sides 516 of the battery module 51, the other side 528 of the opposite sides 526 of the battery module 52, and the other side 538 of the opposite sides 536 of the battery module 53 are also configured to be disposed adjacent to each other and to lie in the same plane. The cover 55 is disposed on the side 516 of the battery module 51, the side 526 of the battery module 52, and the side 536 of the battery module 53 and may cover the sides 516, 526, and 536 at the same time, and the other cover 56 is disposed on the other side 518 of the opposite side 516 of the battery module 51, the other side 528 of the opposite side 526 of the battery module 52, and the other side 538 of the opposite side 536 of the battery module 53 and may cover the sides 518, 528, and 538 at the same time. In certain embodiments of the present disclosure, the cover 55 is configured to mate with the battery modules 51, 52, and 53, and/or the cover 56 is configured to mate with the battery modules 51, 52, and 53. Accordingly, the battery modules 51, 52, and 53 stacked one on another may be fixed in a connected relationship with one another via the outer cover 55 and/or the outer cover 56. Furthermore, in certain embodiments of the present invention, the covers 55 and 56 are configured to seal the interior of the battery module 51, the interior of the battery module 52, and the interior of the battery module 53. In some embodiments of the present invention, the covers 55 and 56 may integrate the battery modules 51, 52 and 53 with each other through a conventional glue sealing or heat sealing process.
As shown in fig. 6A and 6B, the battery modules 51, 52 and 53 are tightly connected to each other to form an integrated configuration. Further, the battery modules 51, 52 and 53 of the horizontal battery assembly 5 are fixedly connected to each other such that the horizontal battery assembly 5 has a fixed configuration.
The battery module 51 has connection terminals 511 and 512, the connection terminals 511 and 512 having polarities different from each other. In some embodiments, the connection terminal 511 may be a positive terminal and the connection terminal 512 may be a negative terminal. As shown in fig. 6B, the connection terminal 511 may be disposed on an end surface 515 of the battery module 51, and the connection terminal 512 may be disposed on an end surface 517 of the battery module. Generally, the connection terminals 511 and 512 of the battery module 51 are disposed at opposite ends of the battery module 51, respectively. The battery module 52 has connection terminals 521 and 522, the connection terminals 521 and 522 having different polarities from each other, and in some embodiments, the connection terminal 521 may be a negative terminal and the connection terminal 522 may be a positive terminal. As shown in fig. 6B, the connection terminals 521 may be disposed on the end surface 525 of the battery module 52, and the connection terminals 522 may be disposed on the end surface 527 of the battery module 52. Generally, the connection terminals 521 and 522 of the battery module 52 are disposed at opposite ends of the battery module 52, respectively. The battery module 53 has connection terminals 531 and 532, and the polarity of the connection terminals 531 and 532 is different from each other. In some embodiments, the connection terminal 531 may be a positive terminal and the connection terminal 532 may be a negative terminal. As shown in fig. 6B, the connection terminal 531 may be disposed on an end surface 535 of the battery module 53, and the connection terminal 532 may be disposed at an end surface 537 of the battery module 53. Generally, the connection terminals 531 and 532 of the battery module 53 are disposed at opposite ends of the battery module 53, respectively.
The battery modules 51, 52, and 53 of the battery assembly 5 are connected in series with each other, that is, the polarity of the connection terminal 511 of the battery module 51 and the polarity of the connection terminal 521 of the battery module 52 are different from each other. In some embodiments, the connection terminal 511 of the battery module 51 is a positive terminal and the connection terminal 521 of the battery module 52 is a negative terminal. The battery assembly 5 further has a conductive connector 58 electrically connected to the connection terminal 511 of the battery module 51 and the connection terminal 521 of the battery module 52, and the battery module 51 and the battery module 52 are connected in series to each other via the conductive connector 58. Furthermore, the polarity of the connection terminal 522 of the battery module 52 and the polarity of the connection terminal 532 of the battery module 53 need to be different from each other, and in some embodiments, the connection terminal 522 of the battery module 52 is a positive terminal and the connection terminal 532 of the battery module 53 is a negative terminal. Similarly, the battery assembly 5 further has a conductive connector 59 electrically connected to the connection terminal 522 of the battery module 52 and the connection terminal 532 of the battery module 53, and the battery module 52 and the battery module 53 are connected in series via a conductive connector 593. The battery modules 51, 52 and 53 connected in series can output a voltage of the sum of the voltages of the three battery modules 51, 52 and 53 to the outside through the connection terminals 512 and 531.
In some embodiments of the present disclosure, the conductive connector 58 substantially connects the end surface 515 of the battery module 51 and the end surface 525 of the battery module 52 and extends over the end surface 515 of the battery module 51 and the end surface 525 of the battery module 52. In some embodiments of the present disclosure, the conductive connector 59 substantially connects the end face 527 of the battery module 52 and the end face 537 of the battery module 53 and extends over the end face 527 of the battery module 52 and the end face 537 of the battery module 53. In some embodiments of the present invention, the conductive connector 58, 59 is a rigid conductive connector, such as a copper sheet. Therefore, the battery module 51, the battery module 52, and the battery module 53 need to be connected and fixedly disposed with each other to connect the rigid conductive connection member 58 with the connection terminal 511 of the battery module 51 and the connection terminal 521 of the battery module 52, and to connect the rigid conductive connection member 59 with the connection terminal 522 of the battery module 52 and the connection terminal 532 of the battery module 53. In some embodiments of the present invention, the conductive connector 58, 59 is a flexible conductive connector configured to allow play between the battery module 51, the battery module 52, and the battery module 53 (i.e., the flexible conductive connector 58, 59 can still achieve electrical connection between the battery modules 51, 52, 53 even if there is some play between the three components).
Fig. 7A, 7B, 7C, 7D, 7E, 7F, and 7G illustrate a method of manufacturing a battery assembly 5 according to some embodiments of the present invention.
As shown in fig. 7A, a battery cell 510 is provided, a connection terminal 511 is led out from the battery cell 510 and formed on an end face 5101 of the battery cell 510, and a connection terminal 512 having a different polarity from the connection terminal 511 is led out from the battery cell 510 and formed on an end face 5103 of the battery cell 510. For the internal structure and manufacturing process of the battery cell, reference may be made to the related contents disclosed in chinese patent applications CN202010353387.4, CN202011043045.9, and CN202011195672.4 (the same below).
As shown in fig. 7B, a housing 5105 is formed over the battery cells 510 (e.g., the battery cells 510 are placed as inserts in a mold for injection molding, so that the housing 5105 is formed directly over the battery cells 510, the same applies below) so as to substantially surround the battery cells 510, to produce a battery module 51; and the connection terminals 511 and 512 drawn from the battery cell 510 are exposed from the case 5105, so that the end surface 515 of the battery module 51 is provided with the connection terminals 511, and the end surface 517 of the battery module 51 is provided with the connection terminals 512.
As shown in fig. 7C, a battery cell 520 is provided, a connection terminal 521 is led out from the battery cell 520 and formed on an end face 5201 of the battery cell 520, and a connection terminal 522 of a different polarity from the connection terminal 521 is led out from the battery cell 520 and formed on an end face 5203 of the battery cell 520.
As shown in fig. 7D, a case 5205 is formed on the battery cell 520 so as to substantially surround the battery cell 520 to make a battery module 52; the connection terminals 521 and 522 led out from the battery cell 520 are exposed from the case 5205, and thus the battery module 52 is manufactured to have the connection terminals 521 on the end surface 525 and the connection terminals 522 on the end surface 527 of the battery module 52.
As shown in fig. 7E, a battery cell 530 is provided, a connection terminal 531 is led out from the battery cell 530 and formed on an end face 5301 of the battery cell 530, and a connection terminal 532 having a different polarity from that of the connection terminal 531 is led out from the battery cell 530 and formed on an end face 5303 of the battery cell 530.
As shown in fig. 7F, a housing 5305 is formed on the battery cell 530 so as to substantially surround the battery cell 530 to make a battery module 53; the connection terminals 531 and 532 led out from the battery core 530 are exposed from the housing 5305, and thus the battery module 53 is manufactured such that the connection terminals 531 are provided on the end surface 535 and the connection terminals 532 are provided on the end surface 537 of the battery module 53.
As shown in fig. 7G, the battery modules 51, 52, 53 are assembled in parallel with each other. Disposing the cover plates 55 and 56 on opposite sides of the battery modules 51, 52, 53, the cover plates 55 and 56 being configured to couple the battery modules 51, 52 and 53 to each other and to fix the relative positions of the battery modules 51, 52 and 53 to each other; further, the cover plates 55, 56 and the housings 5105, 5205, 5305 of the battery modules 51, 52, 53 are configured such that the interiors of the battery modules 51, 52, 53 are in a sealed state.
Next, the conductive connection member 58 is connected to the connection terminal 511 of the battery module 51 and the connection terminal 521 of the battery module 52 (refer to fig. 6A and 6B further), so that the battery module 51 and the battery module 52 are electrically connected to each other. The connection terminals 511 of the battery modules 51 and the connection terminals 521 of the battery modules 52 are different in polarity from each other, and thus the conductive connection members 58 connect the battery modules 51 and the battery modules 52 in series with each other. Furthermore, in some embodiments of the present invention, the conductive connector 58 is a rigid conductive connector. In some embodiments of the present invention, the conductive connector 58 is a flexible conductive connector.
Subsequently, the conductive connection members 59 are connected to the connection terminals 522 and 532 of the battery modules 52 and 53 such that the battery modules 52 and 53 are electrically connected to each other; the connection terminal 522 of the battery module 52 and the connection terminal 532 of the battery module 53 have different polarities from each other, and thus the conductive connection member 59 connects the battery modules 52 and 53 in series with each other. Furthermore, in some embodiments of the present invention, the conductive connector 59 is a rigid conductive connector. In some embodiments of the present invention, the conductive connector 59 is a flexible conductive connector.
Fig. 8A, 8B, 8C, 8D show a horizontal battery assembly 6 according to yet another embodiment of the present invention. The horizontal battery assembly 6 includes three battery modules 61, 62, and 63 connected in parallel with each other.
In some embodiments of the present invention, the battery modules 61, 62 and 63 are stacked on each other in a vertical state; the bottom surface 614 of the battery module 61 and the top surface 623 of the battery module 62 are disposed to face each other, and the bottom surface 624 of the battery module 62 and the top surface 633 of the battery module 63 are disposed to face each other. Battery module 61 has a side 616, battery module 62 has a side 626, and battery module 63 has a side 636. in certain embodiments of the present invention, sides 616, 626, and 636 are configured to be positioned adjacent to each other and generally in the same plane; similarly, the other side 618 of the opposite sides 616 of the battery module 61, the other side 628 of the opposite sides 626 of the battery module 62, and the other side 638 of the opposite sides 636 of the battery module 63 are also configured to be disposed immediately adjacent to each other and to lie substantially in the same plane. The cover 65 is disposed and fixed to the side 616 of the battery module 61, the side 626 of the battery module 62 and the side 636 of the battery module 63 and may cover the sides 616, 626, 636 simultaneously, and the other cover 66 is disposed and fixed to the other side 618 of the opposite side 616 of the battery module 61, the other side 628 of the opposite side 626 of the battery module 62 and the other side 638 of the opposite side 636 of the battery module 63 and may cover the sides 618, 628, 638 simultaneously. In certain embodiments of the present disclosure, the cover 65 is configured to mate with the battery modules 61, 62, and 63, and/or the cover 66 is configured to mate with the battery modules 61, 62, and 63. Accordingly, the battery modules 61, 62, and 63 stacked one on another may be fixed in a connected relationship with each other via the outer cover 65 and/or the outer cover 66. Further, in certain embodiments of the present invention, the covers 65 and 66 are configured to seal the interior of the battery module 61, the interior of the battery module 62, and the interior of the battery module 63. In some embodiments of the present invention, the covers 65 and 66 integrally connect the battery modules 61, 62 and 63 to each other through a conventional adhesive sealing or heat sealing process.
As shown in fig. 8A and 8B, the battery modules 61, 62 and 63 are tightly coupled to each other so as to form an integral type. Further, the battery modules 61, 62 and 63 of the horizontal battery assembly 6 are fixedly connected to each other so that the horizontal battery assembly 6 has a fixed configuration.
In the embodiment shown in fig. 8A, 8B, 8C, 8D, the cell module 61 has an end face 615 and an end face 617 opposite the end face 615, the cell module 62 has an end face 625 and an end face 627 opposite the end face 625, and the cell module 63 has an end face 635 and an end face 637 opposite the end face 635. In certain embodiments of the present disclosure, the end face 615 of the battery module 61, the end face 625 of the battery module 62, and the end face 635 of the battery module 63 are adjacent to each other and substantially on the same plane; in certain embodiments of the present disclosure, the end face 617 of the battery module 61, the end face 627 of the battery module 62, and the end face 635 of the battery module 63 are adjacent to each other and substantially on the same plane.
The battery module 61 has connection terminals 611 and 612, the connection terminals 611 and 612 having different polarities from each other, and in some embodiments, the connection terminal 611 may be a positive terminal and the connection terminal 612 may be a negative terminal. As shown in fig. 8B, the connection terminals 611 may be disposed on the end surface 615 of the battery module 61, and the connection terminals 612 may be disposed on the end surface 617 of the battery module, in general, the connection terminals 611 and 612 of the battery module 61 are disposed at opposite ends of the battery module 61, respectively. The battery module 62 has connection terminals 621 and 622, the polarity of the connection terminals 621 and 622 being different from each other, and in some embodiments, the connection terminal 621 may be a positive terminal and the connection terminal 622 may be a negative terminal. As shown in fig. 8B, the connection terminals 621 may be disposed on the end surface 625 of the battery module 62, and the connection terminals 622 may be disposed on the end surface 627 of the battery module 62, in general, the connection terminals 621 and 622 of the battery module 62 are disposed at opposite ends of the battery module 62, respectively. The battery module 63 has connection terminals 631 and 632, the connection terminals 631 and 632 having different polarities from each other, and in some embodiments, the connection terminal 631 may be a positive terminal and the connection terminal 632 may be a negative terminal. As shown in fig. 8B, the connection terminal 631 may be disposed on the end face 635 of the battery module 63, and the connection terminal 632 may be disposed at the end face 637 of the battery module 63. Generally, the connection terminals 631 and 632 of the battery module 63 are disposed at opposite ends of the battery module 63, respectively.
The battery modules 61, 62, and 63 of the battery assembly 6 are connected in parallel with each other, and therefore the polarities of the connection terminal 611 of the battery module 61, the connection terminal 621 of the battery module 62, and the connection terminal 631 of the battery module 63 are identical to each other, and the polarities of the connection terminal 612 of the battery module 61, the connection terminal 622 of the battery module 62, and the connection terminal 632 of the battery module 63 are identical to each other. In some embodiments, the connection terminal 611 of the battery module 61, the connection terminal 621 of the battery module 62, and the connection terminal 631 of the battery module 63 are all positive terminals, and the connection terminal 612 of the battery module 61, the connection terminal 622 of the battery module 62, and the connection terminal 632 of the battery module 63 are all negative terminals.
The battery assembly 6 further has conductive connections 68 and 69, the conductive connection 68 being configured to electrically connect the connection terminal 611 of the battery module 61, the connection terminal 621 of the battery module 62, and the connection terminal 631 of the battery module 63 to each other, and the conductive connection 69 being configured to electrically connect the connection terminal 612 of the battery module 61, the connection terminal 622 of the battery module 62, and the connection terminal 632 of the battery module 63 to each other. Thus, the battery modules 61, 62 and 63 are connected in parallel with each other via the conductive connectors 68 and 69.
In some embodiments of the present invention, the battery modules 61, 62 and 63 connected in parallel may be connected to an external member from the protruding portions 681 and 69 of the conductive connection members 68 and 69 to output power to the outside.
In certain embodiments of the present disclosure, the conductive connection 68 substantially connects the end surface 615 of the battery module 61, the end surface 625 of the battery module 62, and the end surface 635 of the battery module 63 and extends over the end surface 615 of the battery module 61, the end surface 625 of the battery module 62, and the end surface 635 of the battery module 63, while the conductive connection 69 substantially connects the end surface 617 of the battery module 61, the end surface 627 of the battery module 62, and the end surface 637 of the battery module 63 and extends over the end surface 617 of the battery module 61, the end surface 627 of the battery module 62, and the end surface 637 of the battery module 63. In some embodiments of the present invention, the conductive connector 68, 69 is a rigid conductive connector, such as a copper sheet. Therefore, the battery modules 61, 62 and 63 are connected and fixed to each other so that the rigid conductive connection members 68 are connected to the connection terminals 611 and 621 of the battery modules 61 and 63 and the rigid conductive connection members 69 are connected to the connection terminals 612 and 622 of the battery modules 61 and 63 and the connection terminals 632 of the battery modules 63. In some embodiments of the present invention, the conductive connection member 68, 69 is a flexible conductive connection member configured to allow some play between the battery module 61, the battery module 62 and the battery module 63 (i.e., even if there is some play between the battery modules 61, 62, 63, the flexible conductive connection member 68, 69 can still achieve electrical connection between the three).
Fig. 9A, 9B, 9C, 9D, 9E, 9F, and 9G illustrate a method of manufacturing a battery assembly 6 according to some embodiments of the present invention.
As shown in fig. 9A, a battery cell 610 is provided, a connection terminal 611 is led out from the battery cell 610 and formed on an end surface 6101 of the battery cell 610, and a connection terminal 612 having a different polarity from the connection terminal 611 is led out from the battery cell 610 and formed on an end surface 6103 of the battery cell 610. For the internal structure and manufacturing process of the battery cell, reference may be made to the related contents disclosed in chinese patent applications CN202010353387.4, CN202011043045.9, and CN202011195672.4 (the same below).
As shown in fig. 9B, a housing 6105 is formed on the battery core 610 (for example, the battery core 610 may be placed as an insert in a mold for injection molding, so that the housing 6105 is formed directly on the battery core 610, the same applies below) so as to substantially surround the battery core 610 to form a battery module 61; the connection terminals 611 and 612 led out from the battery core 610 are exposed from the housing 6105, and thus the end surface 615 of the battery module 61 is provided with the connection terminal 611, and the end surface 617 of the battery module 61 is provided with the connection terminal 612.
As shown in fig. 9C, a battery cell 620 is provided, a connection terminal 621 is led out from the battery cell 620 and formed on an end surface 6201 of the battery cell 620, and a connection terminal 622 having a different polarity from the connection terminal 621 is led out from the battery cell 620 and formed on an end surface 6203 of the battery cell 620.
As shown in fig. 9D, a case 6205 is formed on the battery cell 620 so as to substantially surround the battery cell 620 to make a battery module 62; the connection terminals 621 and 622 led out from the battery core 620 are exposed from the case 6205, so that the battery module 62 is manufactured with the connection terminals 621 on the end surface 625 and the connection terminals 622 on the end surface 627 of the battery module 62.
As shown in fig. 9E, a battery cell 630 is provided, a connection terminal 631 is led out from the battery cell 630 and formed on an end face 6301 of the battery cell 630, and a connection terminal 632 having a different polarity from the connection terminal 631 is led out from the battery cell 630 and formed on an end face 6303 of the battery cell 630.
As shown in fig. 9F, a case 6305 is formed on the battery cell 630 so as to substantially surround the battery cell 630 to make a battery module 63; the connection terminals 631 and 632 from the battery cell 630 are exposed from the case 6305, so that the battery module 63 is manufactured with the connection terminal 631 on the end face 635 and the connection terminal 632 on the end face 637 of the battery module 63.
As shown in fig. 9G, the battery modules 61, 62, 63 are assembled in a straight line (i.e., vertically aligned) with each other. Disposing cover plates 65 and 66 on opposite sides of the battery modules 61, 62, 63, the cover plates 65 and 66 being configured to couple the battery modules 61, 62 and 63 to each other and to fix the relative positions of the battery modules 61, 62 and 63 to each other; in addition, the covers 65, 66 and the housings 6105, 6205, 6305 of the battery modules 61, 62, 63 are configured such that the insides of the battery modules 61, 62, 63 are in a sealed state.
Next, the conductive connection member 68 is connected to the connection terminal 611 of the battery module 61, the connection terminal 621 of the battery module 62, and the connection terminal 631 of the battery module 63, and the conductive connection member 69 is connected to the connection terminal 612 of the battery module 61, the connection terminal 622 of the battery module 62, and the connection terminal 633 of the battery module 63, so that the battery module 61, the battery module 62, and the battery module 63 are electrically connected to each other (see fig. 8A, 8B). The connection terminals 611, 621, and 631 of the battery modules 61, 62 and 63 have the same polarity as each other, and the connection terminals 612, 622, and 633 of the battery modules 61, 62 and 63 have the same polarity as each other, so the conductive connections 68, 69 connect the battery modules 61, 62, and 63 in parallel with each other. Furthermore, in some embodiments of the present invention, the conductive connection member 68 has a protrusion 681, and the conductive connection member 69 has a protrusion 691, and the protrusions 681 and 691 are configured to allow the battery assembly 6 assembled by the battery modules 61, 62 and 63 to output power to the outside.
Furthermore, in some embodiments of the present invention, the conductive connection 68, 69 is a rigid conductive connection. Therefore, after being connected to the connection terminal 611 of the battery module 61, the connection terminal 621 of the battery module 62, and the connection terminal 631 of the battery module 63 via the rigid conductive connector 68, and after being connected to the connection terminal 612 of the battery module 61, the connection terminal 622 of the battery module 62, and the connection terminal 632 of the battery module 63 via the rigid conductive connector 69, the parallel connection of the battery modules 61, 62, 63 can be achieved. In some embodiments of the present invention, the conductive connector 68, 69 is a flexible conductive connector.
Although the above embodiments describe only two or three battery modules stacked together in a horizontal or vertical manner and connected in series or parallel with each other, it will be appreciated by those skilled in the art that such stacking and connecting may be used for any number of battery modules. That is, those skilled in the art can conceive of stacking two or more battery modules of any number firmly and stably in series or in parallel with each other in this manner according to the structure disclosed in the present invention.
Reference throughout this specification to "some embodiments," "one embodiment," "another example," "an example," "a specific example," or "some examples" means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. Thus, throughout the specification, descriptions appear, for example: "in some embodiments," "in an embodiment," "in one embodiment," "in another example," "in one example," "in a particular example," or "by example," which do not necessarily refer to the same embodiment or example of the invention.
As used herein, spatially relative terms, such as "under," "below," "lower," "above," "upper," "lower," "left," "right," and the like, may be used herein for ease of description to describe one component or feature's relationship to another component or feature as illustrated in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present.
As used herein, the terms "approximately," "substantially," "essentially," and "about" are used to describe and account for minor variations. When used in conjunction with an event or circumstance, the terms can refer to an instance in which the event or circumstance occurs precisely as well as an instance in which the event or circumstance occurs in close proximity. As used herein with respect to a given value or range, the term "about" generally means within ± 10%, ± 5%, ± 1%, or ± 0.5% of the given value or range. Ranges may be expressed herein as from one end point to another end point or between two end points. Unless otherwise specified, all ranges disclosed herein are inclusive of the endpoints. The term "substantially coplanar" may refer to two surfaces located within a few micrometers (μm) along the same plane, e.g., within 10 μm, within 5 μm, within 1 μm, or within 0.5 μm located along the same plane. When referring to "substantially" the same numerical value or property, the term can refer to values that are within ± 10%, ± 5%, ± 1%, or ± 0.5% of the mean of the stated values.
As used herein, the singular terms "a" and "the" may include plural referents unless the context clearly dictates otherwise. In the description of some embodiments, a component provided "on" or "over" another component may encompass the case where the preceding component is directly on (e.g., in physical contact with) the succeeding component, as well as the case where one or more intervening components are located between the preceding and succeeding components.
Unless otherwise specified, spatial descriptions such as "above," "below," "upper," "left," "right," "lower," "top," "bottom," "vertical," "horizontal," "side," "above," "below," "upper," "on … …," "under … …," "down," and the like are directed relative to the orientation shown in the figures. It is to be understood that the spatial descriptions used herein are for purposes of illustration only and that actual implementations of the structures described herein may be spatially arranged in any orientation or manner provided that the embodiments of the present invention are not biased by such arrangements.
While the invention has been described and illustrated with reference to specific embodiments thereof, these descriptions and illustrations do not limit the invention. Those skilled in the art will clearly understand that various changes, substitutions and alterations can be made herein without departing from the true spirit and scope of the invention as defined by the appended claims. All such equivalent constructions fall within the scope of protection of the present invention.
Claims (23)
1. A battery assembly, comprising:
a first battery module having a first terminal;
a second battery module having a first terminal; and
a first conductive connector electrically connecting the first terminal of the first battery module and the first terminal of the second battery module;
wherein the first battery module and the second battery module are connected to each other to form an integrated configuration.
2. The battery assembly of claim 1, wherein: the first battery module has a first side and the second battery module has a first side, wherein the first side of the first battery module faces the first side of the second battery module.
3. The battery assembly of claim 2, wherein: the first terminal of the first battery module and the first terminal of the second battery module have different polarities from each other.
4. The battery assembly of claim 3, further comprising a cover configured to cover the first conductive connector.
5. The battery assembly of claim 2, wherein: the first terminal of the first battery module and the first terminal of the second battery module have the same polarity as each other, wherein the first battery module further has a second terminal having a polarity different from the first terminal of the first battery module, and the second battery module further has a second terminal having a polarity different from the first terminal of the second battery module, wherein the battery assembly further has a second electrically conductive connection member electrically connecting the second terminal of the first battery module and the second terminal of the second battery module.
6. The battery assembly of claim 2, wherein: the battery assembly further has a connecting cover disposed between the first side of the first battery module and the second side of the second battery module and securing the first battery module and the second battery module together.
7. The battery assembly of claim 2, wherein: the battery assembly further has a first outer cover and a second outer cover, wherein the first outer cover is configured to cover a second side of the first battery module, wherein the second side of the first battery module and a first side of the first battery module are opposite to each other, wherein the second outer cover is configured to cover a second side of the second battery module, wherein the second side of the second battery module and a first side of the second battery module are opposite to each other.
8. The battery assembly of claim 1, wherein: the bottom surface of the first battery module faces the top surface of the second battery module.
9. The battery assembly of claim 8, wherein: the first terminal of the first battery module and the first terminal of the second battery module have different polarities from each other.
10. The battery assembly of claim 8, wherein: the first terminal of the first battery module and the first terminal of the second battery module have the same polarity as each other, wherein the first battery module further has a second terminal having a polarity different from the first terminal of the first battery module, and the second battery module further has a second terminal having a polarity different from the first terminal of the second battery module, wherein the battery assembly further has a second electrically conductive connection member electrically connecting the second terminal of the first battery module and the second terminal of the second battery module.
11. The battery assembly of claim 8, further comprising a first cover and a second cover, wherein the first cover is configured to cover a first side of the first battery module and a first side of the second battery module on the same side, wherein the second cover is configured to cover a second side of the first battery module and a second side of the second battery module on the same side, the first sides of the first and second battery modules being opposite the respective second sides.
12. The battery assembly of claim 3, further comprising a third battery module and a second electrically conductive connector, wherein the second battery module has a second terminal with a polarity different from the first terminal of the second battery module and a first terminal of the third battery module with a polarity different from the second terminal of the second battery module, wherein the second electrically conductive connector electrically connects the second terminal of the second battery module and the first terminal of the third battery module, wherein a first side of the third battery module faces a second side of the second battery module opposite the first side, and wherein the first, second, and third battery modules are connected to one another to form a unitary configuration.
13. The battery assembly of claim 5, further comprising a third battery module, wherein the third battery module has a first terminal having a polarity that is the same as the first terminal of the second battery module and a second terminal having a polarity that is the same as the second terminal of the second battery module, wherein the first conductive connection electrically connects the first terminal of the first battery module, the first terminal of the second battery module, and a first terminal of the third battery module, and the second conductive connection electrically connects the second terminal of the first battery module, the second terminal of the second battery module, and a second terminal of the third battery module, wherein a first side of the third battery module faces a second side of the second battery module that is opposite the first side, wherein the first battery module, the second battery module and the third battery module are connected to each other to form an integrated configuration.
14. The battery assembly of claim 9, further comprising a third battery module and a second electrically conductive connector, wherein the second battery module has a second terminal having a different polarity than the first terminal of the second battery module and the third battery module has a first terminal having a different polarity than the second terminal of the second battery module, wherein the second electrically conductive connector electrically connects the second terminal of the second battery module and the first terminal of the third battery module, wherein a top surface of the third battery module faces a bottom surface of the second battery module, and wherein the first, second, and third battery modules are connected to one another to form a unitary configuration.
15. The battery assembly of claim 10, further comprising a third battery module, wherein the third battery module has a first terminal having a polarity that is the same as the first terminal of the second battery module and a second terminal having a polarity that is the same as the second terminal of the second battery module, wherein the first conductive connection electrically connects the first terminal of the first battery module, the first terminal of the second battery module, and a first terminal of the third battery module, and the second conductive connection electrically connects the second terminal of the first battery module, the second terminal of the second battery module, and a second terminal of the third battery module, wherein a top surface of the third battery module faces a bottom surface of the second battery module, wherein the first battery module, The second battery module and the third battery module are connected to each other to form an integrated configuration.
16. A battery assembly, comprising;
a first battery module having a plurality of battery cells,
the second battery module is arranged side by side with the first battery module and is electrically connected with the first battery module; and
a coupling member configured to maintain a positional relationship of the first battery module and the second battery module with respect to each other.
17. The battery assembly of claim 16, wherein: a first side of the first battery module and a first side of a second battery module face each other, and wherein the coupling member includes a connection cover disposed between the first side of the first battery module and the first side of the second battery module.
18. The battery assembly of claim 16, wherein: a first side of the first battery module and a first side of a second battery module are adjacent to each other, and wherein the coupling member includes an outer cover covering and fixed to the first sides of the first and second battery modules.
19. The battery assembly of claim 16, wherein: the first battery module has a first terminal and the second battery module has a second terminal having a different polarity than the first terminal, wherein the first battery module further has a first conductive connection electrically connecting the first terminal of the first battery module and the second terminal of the second battery module.
20. The battery assembly of claim 19 further comprising a cover configured to cover the first conductive connector.
21. The battery assembly of claim 16, wherein: the first battery module has a first terminal, the second battery module has a first terminal of the same polarity as the first terminal, wherein the battery assembly further has a first electrically conductive connector electrically connecting the first terminal of the first battery module and the first terminal of the second battery module, wherein the first battery module further has a second terminal of a different polarity than the first terminal of the first battery module, and the second battery module further has a second terminal of a different polarity than the first terminal of the second battery module, and wherein the battery assembly further has a second electrically conductive connector electrically connecting the second terminal of the first battery module and the second terminal of the second battery module.
22. The battery assembly of claim 17, further comprising a third battery module disposed side-by-side with and electrically connected to a second battery module, wherein a first side of the third battery module faces a second side of the second battery module opposite the first side, and wherein the coupling member further comprises a coupling cover disposed between the second side of the second battery module and the first side of the third battery module.
23. The battery assembly of claim 18, further comprising a third battery module disposed side-by-side with and electrically connected to a second battery module, wherein a first side of the third battery module is adjacent to the first side of the second battery module and to each other, and wherein the outer cover is configured to cover and be secured to the first side of the first battery module, the first side of the second battery module, and the first side of the third battery module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120009605.2U CN214848949U (en) | 2021-01-04 | 2021-01-04 | Battery assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120009605.2U CN214848949U (en) | 2021-01-04 | 2021-01-04 | Battery assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214848949U true CN214848949U (en) | 2021-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120009605.2U Active CN214848949U (en) | 2021-01-04 | 2021-01-04 | Battery assembly |
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| Country | Link |
|---|---|
| CN (1) | CN214848949U (en) |
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2021
- 2021-01-04 CN CN202120009605.2U patent/CN214848949U/en active Active
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