CN107863471A - Combined battery pack - Google Patents

Abstract

A combined battery pack comprises at least one battery string and at least one connector, wherein each battery string comprises at least two battery modules, each battery module is provided with a shell comprising two spaced vertical walls, an energy storage unit used for storing electric energy and providing the stored electric energy outwards, the energy storage unit is arranged between the vertical walls and comprises two polar ends respectively adjacent to the two vertical walls, each connector is used for connecting at least two adjacent battery modules and comprises a base wall clamped and embedded in the shells of the two adjacent battery modules and two clamping walls respectively connected to the two opposite ends of the base wall, and at least one of the two clamping walls is attached to the vertical walls of the shells of the two adjacent battery modules and contacts the polar ends of the two adjacent battery modules to electrically connect the two battery modules. Therefore, the process of connecting the battery modules is simplified, and the single battery module can be replaced independently in the future.

Description

Combined battery pack

technical field

The invention relates to a battery, in particular to a vehicle battery.

Background technique

At present, the battery packs used in electric vehicles are based on the power demand and the original design of the installation space in the car. After arranging multiple battery modules of a single specification, they are connected in series or in parallel with cables. The battery modules are electrically connected, and then the battery modules are wrapped into battery packs before being placed in the installation space of the electric vehicle for subsequent use.

Referring to FIG. 1, for example, when the battery pack 1 used in an electric vehicle requires six single battery modules 11 to be connected in series to provide electric energy, and the space pattern of the battery pack 1 designed for installation in the electric vehicle is a cuboid, the battery The supplier needs to select six battery modules 11 with the same volume and a single power specification according to the required specifications, and arrange the six battery modules 11 in a string according to the anode terminals 12 and cathode terminals 13 of the battery modules 11, and then Connect the anode terminal 12 of one battery module 11 to the cathode terminal 13 of another adjacent battery module 11 with a cable 14, and finally, put the six battery modules 11 connected in series into a pre-designed and fabricated battery case In 15, the battery pack 1 is assembled by parcels, and finally the battery pack 1 is put into the installation space of the electric vehicle for subsequent use by the assembly personnel of the electric vehicle.

Obviously, for suppliers who manufacture and provide battery packs, the process of assembling a battery pack with a predetermined space from multiple battery modules is cumbersome and requires manpower to connect the battery modules separately. At the same time, there is also the hidden worry that if a single battery module fails in the future, it cannot be replaced easily and individually.

Contents of the invention

The purpose of the present invention is to provide a combined battery pack that can be customized according to the requirements of power and installation space.

The combined battery pack of the present invention includes at least one battery string and at least one connector.

The battery string includes at least two battery modules, each battery module has a casing including two spaced upstanding walls, and an energy storage unit for storing electrical energy and providing the stored electrical energy to the outside, and the energy storage unit is provided with It is between the upright walls and includes two polar ends respectively adjacent to the two upright walls.

The connector is used to connect two adjacent battery modules and includes a base wall that is inserted into the shells of the two adjacent battery modules, and two clamping walls respectively connected to two opposite ends of the base wall. At least one of the two clamping walls abuts against the upright walls of the casings of the two adjacent battery modules and contacts the polar ends of the two adjacent battery modules to electrically connect the two battery modules.

Preferably, the combined battery pack further includes at least one set of fixers disposed on top of a clamping wall of the at least one connector.

Preferably, the combined battery pack includes battery strings, and the bipolar terminals of any battery module of the battery string are respectively an anode and a cathode, and the battery modules are arranged in an interlaced manner with anodes and cathodes, and the The battery modules are electrically connected in series through the at least one connector, and the two clamping walls of each connector are respectively attached to the upright walls of the shells of the two adjacent battery modules and respectively contact the two adjacent battery modules. the polar end.

Preferably, the number of the connectors is more than two, and the bipolar ends of any battery module of the battery string are the anode and the cathode respectively, and the polar ends of the battery modules are located at the same polarity. Arranged sideways and electrically connected in parallel through the connector.

Preferably, the base wall of each connector snaps into the upright wall of the battery module on the same side, and one of the two clamping walls abuts against the upright wall of the battery module on the same side and At the same time, contacting the polar terminals of the battery modules on the same side makes the battery modules electrically connected in parallel.

Preferably, the combined battery pack includes a plurality of battery strings and a plurality of connectors, each battery string has the same number of battery modules, and the bipolar terminals of any battery module are respectively an anode and a cathode, each battery The battery modules in the string are electrically connected in series with several of the connectors, and the two clamping walls of each connector connected in electrical series are respectively attached to the shells of the two adjacent battery modules. The upright walls are respectively in contact with the polar ends of the two adjacent battery modules, and the battery strings are electrically connected in parallel by the remaining number of the connectors.

The beneficial effect of the present invention is that: by inserting the connector and electrically connecting two adjacently arranged battery modules, the battery modules are simultaneously connected and fixed to form a battery pack, and a battery that meets the customer's power and installation space requirements can be easily provided Bag.

Description of drawings

Other features and effects of the present invention will be clearly presented in the implementation manner with reference to the drawings:

Fig. 1 is a perspective view illustrating an embodiment of an existing battery pack;

Fig. 2 is a perspective view illustrating a first embodiment of the combined battery pack of the present invention;

Fig. 3 is the sectional view of this first embodiment;

4 is a perspective view illustrating a second embodiment of the combined battery pack of the present invention;

Fig. 5 is the sectional view of this second embodiment;

6 is a perspective view illustrating a third embodiment of the combined battery pack of the present invention;

7 is a perspective view illustrating a fourth embodiment of the combined battery pack of the present invention; and

FIG. 8 is a perspective view illustrating a fifth embodiment of the combined battery pack of the present invention.

Detailed ways

Before the present invention is described in detail, it should be noted that in the following description, similar components are denoted by the same numerals.

Referring to Fig. 2 and Fig. 3, a first embodiment of the combined battery pack of the present invention includes a battery string 2 and a plurality of connectors 3, which are suitable for, for example, an electric vehicle, and when the electric vehicle is designed, it is used for installing the battery pack. The space pattern is a cuboid, and the power requirement is a plurality of battery modules 21 connected in series. In the following description, four battery modules 21 and three connectors 3 are taken as examples for illustration.

The battery string includes four battery modules 21, each battery module 21 has a housing 211 comprising two spaced upright walls 212, and an energy storage unit 214 arranged between the two upright walls 212, the energy storage unit 214 It is used to store electric energy and provide the stored electric energy to the outside, including an electric core 215 for storing electric energy, and two polar terminals 216 respectively arranged on the opposite sides of the electric core 215, and the two polar terminals 216 are respectively an anode The four battery modules 21 are respectively arranged in a string with the anode end and the cathode end staggered, and are connected in series through the connector 3.

The connector 3 is made of conductive material, the cross section is roughly "H" shape, and is used to connect two adjacent battery modules 21. The base wall 31 of the two upright walls 212, and two clamping walls 32 respectively connected to the two opposite ends of the base wall 31, the two clamping walls 32 respectively abut against the upright walls 212 of the shells of the two adjacent battery modules 21 , and respectively contact the anode terminal of the one battery module 21 and the cathode terminal of the other battery module 21, so that the four battery modules 21 form a series connection, and the battery string 2 is located at the two poles of the outermost two battery modules 21 The sex terminals 216 are electrically connected to the outside respectively.

In the first embodiment of the above-mentioned combined battery pack of the present invention, the four battery modules 21 are arranged in a battery string with the anode terminals and cathode terminals staggered, and at the same time cooperate with the connector 3 to engage the upright wall 212 of the battery module 21 and Contact the polarity ends 216 of the battery modules 21, and simply make the four battery modules 21 electrically connected in series, and also arrange and fix them into a rectangular parallelepiped battery pack, which can be applied to electric vehicles, for example, and electric vehicles When designing, the space pattern of the battery pack for the supply device is a cuboid, and the power demand is the need for multiple battery modules 21 to be connected in series. In addition, when any battery module 21 in the battery pack fails and needs to be replaced in the future, it only needs to be removed. The battery module 21 can be easily replaced by snapping the connector 3 of the battery module 21. To really improve the existing battery pack, it is necessary to use manpower to separately apply soldering cables to electrically connect each battery module 21, and it cannot be replaced easily and individually. Disadvantages of the faulty battery module 21 .

Referring to Fig. 4 and Fig. 5, a second embodiment of the combined battery pack of the present invention includes a battery string 2, a plurality of connectors 3, and a plurality of holders 4, which are suitable for, for example, an electric vehicle, and when the electric vehicle is designed The space pattern of the battery pack for the device is a cuboid, and the power requirement is that multiple battery modules 21 are connected in parallel. In the following description, four battery modules 21, eight connectors 3, and two holders 4 are used as examples to illustrate .

The battery string 2 includes four battery modules 21, each battery module 21 has a housing 211 comprising two spaced upright walls 212, and an energy storage unit 214 arranged between the two upright walls 212, the energy storage unit 214 is used to store electrical energy and provide stored electrical energy to the outside, including a battery core 215 for storing electrical energy, and two polar terminals 216 respectively arranged on opposite sides of the battery core 215, and the two polar terminals 216 are respectively a An anode terminal and a cathode terminal are respectively adjacent to the two upright walls 212. The four battery modules 21 are arranged adjacently in a string, and the anode terminals of the battery modules are all located on the same side, and the cathode terminals are located on the opposite side. side, and form a parallel connection with the holder 4 through the connector 3 .

The connector 3 is made of conductive material, and the cross section is roughly "H" shape. Each connector 3 includes a base wall 31 that is inserted into the upright wall 212 of each battery module 21, and two connected to the vertical wall 212 of each battery module 21. Two clamping walls 32 at opposite ends of the base wall 31 , one clamping wall 32 abuts against the upstanding wall 212 of the housing 211 of the battery module 21 , and contacts a polarity end 216 of the battery module 21 .

The two holders 4 are made of conductive materials. One holder 4 is nested on the top of the clamping walls 32 of the four connectors 3 on the same side of the battery string, while the other holder 4 is nested on the battery string. The tops of the clamping walls 32 of the four connectors 3 on the opposite side of the string electrically connect the four connectors 3 on the same side, so that the battery modules 21 are connected in parallel.

In the second embodiment of the above-mentioned combined battery pack of the present invention, the anode terminals and the cathode terminals of the four battery modules 21 are respectively arranged on the same side to form a battery string, and at the same time cooperate with the connector 3 to engage each The upright wall 212 of a battery module 21 is in contact with the polarity end 216 of the battery module 21, and the two holders 4 are respectively sleeved on the top of the clamping walls 32 of the connector 3 on opposite sides of the battery string, and the simple When the four battery modules 21 are electrically connected in parallel, they are also arranged and fixed into battery packs in the desired appearance, which can be applied to electric vehicles, for example, and the space for installing battery packs in the design of electric vehicles is The rectangular parallelepiped and power requirements are the requirements for parallel connection of multiple battery modules 21 .

Referring to Fig. 6, a third embodiment of the combined battery pack of the present invention is similar to the above-mentioned second embodiment, including a battery string 2, and a plurality of connectors 3, suitable for example for electric vehicles, and the design of electric vehicles At that time, the space form of the battery pack for the supply device is a cuboid, and the power requirement is that multiple battery modules 21 are connected in parallel. In the following description, four battery modules 21 and two connectors 3 are taken as examples for illustration.

The battery string includes four battery modules 21, each battery module 21 has a housing 211 comprising two spaced upright walls 212, and an energy storage unit 214 arranged between the two upright walls 212, the energy storage unit 214 It is used to store electric energy and provide the stored electric energy to the outside, including an electric core 215 for storing electric energy, and two polar terminals 216 respectively arranged on the opposite sides of the electric core 215, and the two polar terminals 216 are respectively an anode The four battery modules 21 are adjacently arranged in a string, and the anode terminals of the battery modules 21 are all located on the same side, and the cathode terminals are located on the opposite side. side, and form a parallel connection through the two connectors 3.

The two connectors 3 are made of conductive materials, and the cross-section is roughly "H". Two clamping walls 32 at opposite ends, the base wall 31 of a connector 3 is inserted into the four upright walls 212 of the four-battery module 21 on the same side, and one clamping wall 32 is attached to the shell of the four-battery module 21 which is clamped 211 of the upright wall 212, and at the same time contact the one polarity end 216 of the four-battery module 21; the base wall 31 of the other connector 3 is inserted into the upright wall 212 of the four-battery module 21 on the opposite side, And a clamping wall 32 abuts against the upright wall 212 of the casing 211 of the four-battery module 21 that is inserted, and contacts the other polarity end 216 of the four-battery module 21 at the same time, so that the four-battery module 21 passes through the The two connectors 3 form a parallel connection.

In the third embodiment of the combined battery pack of the present invention, the single clamping wall 32 abuts against the upright wall 212 of the four-battery module 21 and simultaneously contacts the polar end 216 of the four-battery module 21 on the same side, so that the simple While the four battery modules 21 are electrically connected in parallel, they are also arranged and fixed into a rectangular parallelepiped-shaped battery pack, which is applicable to the needs of special device space types and power requirements such as electric vehicles.

It should be noted that the connector 3 and the holder 4 of the second embodiment above, and the connector 3 described in the third embodiment can be used interchangeably according to actual needs, that is, for example, adopt the method disclosed in the second embodiment. The connector 3 and the holder 4 fix the battery module 21 and at the same time electrically connect the polarity terminal 216 on the same side, while the connector 3 disclosed in the third embodiment is used on the other side for more flexible viewing The actual demand is to easily configure the battery pack with the required space type and power status. Since these changes are numerous, no examples will be given here.

Referring to Fig. 7, a fourth embodiment of the combined battery pack of the present invention includes a plurality of battery strings 2 and a plurality of connectors 3, and is suitable for such as an electric vehicle, and when the electric vehicle is designed, it is a space type for installing a battery pack. The state is a cuboid, and the power requirement is that the battery strings 2 are connected in parallel, and the battery modules 21 of each battery string 2 are connected in series. In the following description, two battery strings 2 connected in parallel with each other, and eight connected Device 3 is taken as an example to illustrate.

The two battery strings 2 each include four battery modules 21, each battery module 21 has a housing 211 including two spaced upright walls 212, and an energy storage unit 214 arranged between the two upright walls 212, the storage The energy unit 214 is used for storing electric energy and providing the stored electric energy to the outside, including an electric core 215 for storing electric energy, and two polar terminals 216 respectively arranged on opposite sides of the electric core 215, and the two polar terminals 216 are respectively It is an anode terminal and a cathode terminal, which are respectively adjacent to the two vertical walls 212 . The four battery modules 21 of each battery string 2 are arranged in a string with the anode terminal and the cathode terminal staggered respectively, and are connected in series through six of the connectors 3; The anode terminals of the two battery strings 2 are located on the same side, and the cathode terminals are located on the opposite side, and are connected in parallel through the remaining two connectors 3 .

The connector 3 is made of conductive material, and the cross section is roughly "H" shape. The six connectors 3 are used to connect two adjacent battery modules 21 of each battery string 2. The connector 3 includes a base wall 31 that is inserted into the upright walls 212 of the two adjacent battery modules 21, and two clamping walls 32 respectively connected to two opposite ends of the base wall 31, and the two clamping walls 32 are respectively attached to The upright walls 212 of the casings 211 of the two adjacent battery modules 21 are in contact with the anode terminal of the one battery module 21 and the cathode terminal of the other battery module 21 respectively, so that the four battery modules of each battery string 2 21 to form a series connection, and the remaining two connectors 3 include a base wall 31 that is inserted into the upright wall 212 of each battery string 2, two clamping walls 32 that are respectively connected to two opposite ends of the base wall 31, and a clamping wall 32 against the upright wall 212 of the casing 211 of the battery string 2 that is inserted, and contacts the one polarity end 216 of the battery string 2, so that the battery strings 2 are connected in parallel, and the two connectors 3 are not connected. The clamping wall 32 contacting the polar end 216 of the battery string 2 provides an electrical connection to the outside.

In the fourth embodiment of the combined battery pack of the present invention described above, the four battery modules 21 of each battery string 2 are arranged in a staggered manner with anode terminals and cathode terminals to form a battery string 2, and at the same time cooperate with the latching battery of the connector 3 The six upright walls 212 of the module 21 contact the polar ends 216 of the battery modules 21, so that the four battery modules 21 are electrically connected in series; side by side, and connect the remaining two of the connectors 3 so that the two battery strings 2 are connected in parallel, and at the same time, they are also arranged and fixed to form a battery pack that meets the desired appearance, and can be applied to the design of, for example, an electric vehicle need.

Referring to FIG. 8, a fifth embodiment of the combined battery pack of the present invention includes multiple battery strings 2, multiple connectors 3, and multiple holders 4. In the following description, three battery strings 2, ten Five connectors 3 and two retainers 4 are taken as an example for illustration.

The three battery strings 2 each include four battery modules 21, each battery module 21 has a housing 211 including two spaced upright walls 212, and an energy storage unit 214 arranged between the two upright walls 212, the storage unit The energy unit 214 is used for storing electric energy and providing the stored electric energy to the outside, including an electric core 215 for storing electric energy, and two polar terminals 216 respectively arranged on opposite sides of the electric core 215, and the two polar terminals 216 are respectively An anode terminal and a cathode terminal are respectively adjacent to the two upright walls 212, and the four battery modules 21 of each battery string 2 are arranged in a string with the anode terminal and the cathode terminal staggered, and pass through the Nine of the connectors 3 form a series connection, and the battery strings 2 are arranged side by side in a plane single-layer manner, and the anode terminals of the battery strings 2 are located on the same side, while the cathode terminals of the battery strings 2 are located on the opposite side. On the other side, the other six connectors 3 are connected in parallel with the two fixers 4 .

The connector 3 is made of conductive material, the section is roughly "H" shape, nine connectors 3 are used to connect two adjacent battery modules 21 of each battery string 2, the connector 3 includes a The base walls 31 that are embedded in the two upright walls 212 of the two adjacent battery modules 21, and the two clamping walls 32 respectively connected to the two opposite ends of the base walls 31, the two clamping walls 32 are respectively attached to the two adjacent The upright wall 212 of the casing 211 of the battery module 21, and respectively contact the anode terminal of the one battery module 21 and the cathode terminal of the other battery module 21, so that the four battery modules 21 of each battery string 2 form a series connection, The remaining six connectors 3 each include a base wall 31 that is inserted into the upright wall 212 of each battery string 2, and two clamping walls 32 that are respectively connected to two opposite ends of the base wall 31, and a clamping wall 32 is attached to The upright wall 212 of the housing 211 of the battery string 2 is engaged and contacts a polarity end 216 of the battery module 21 .

The two holders 4 are made of conductive materials, one holder 4 is nested on the top of the clamping walls 31 of the three connectors 3 on the same side of the battery string 2, and the other holder 4 is nested on the same side of the battery string 2. The top of the clamping wall 31 of the three connectors 3 on the opposite side of the battery string 2, and electrically connect the connectors 3 on the same side, so that the battery strings 2 are connected in parallel, and the respective The clamping wall 32 of the connector 3 exposed outside the upstanding wall 212 also provides an electrical connection to the outside.

In the fifth embodiment of the combined battery pack of the present invention, the four battery modules 21 of each battery string 2 are arranged in a staggered manner with anode terminals and cathode terminals to form a battery string 2, and at the same time cooperate with the connector 3 to engage the battery modules The upright wall 212 of 21 and the polarity end 216 of the battery module 21 are connected, and the four battery modules 21 are electrically connected in series, and then the anode terminal or cathode terminal of each battery string 2 is located side by side in the same way, and the described The connector 3 is connected to the anode terminal or the cathode terminal, and then the connectors 3 on the same side are respectively fixedly connected by the holder 4, so that the battery strings 2 are connected in parallel and arranged and fixed into a A battery pack in the shape of a cuboid can be applied to, for example, an electric vehicle, and when the electric vehicle is designed, the space for installing the battery pack is a cuboid, and the power demand is that multiple battery strings 2 are connected in parallel, and each battery string 2 The battery modules 21 need to be connected in series. In addition, when any battery module 21 in the battery pack fails and needs to be replaced in the future, it is only necessary to remove the retainer 4 that fixes the connector 3 and engage the battery module 21. The connector 3 can easily replace the battery module 21, which really improves the shortcomings of the existing battery pack that requires manpower to separately apply welding and bonding cables to electrically connect each battery module 21, and the faulty battery module 21 cannot be replaced easily and individually.

To sum up, the combined battery pack of the present invention uses the connectors to engage multiple battery modules connected in series or in parallel, and fixes them with the holder according to the requirements of the connector settings, so that the power connection of the battery pack can be performed at the same time. And the effect of fixation improves the existing battery pack needs to use manpower to apply welding and bonding cables to electrically connect each battery module, and the shortcoming that the faulty battery module cannot be easily and individually replaced, so the purpose of the present invention can indeed be achieved.

The above are only preferred embodiments of the present invention, and should not limit the scope of the present invention, that is, all simple equivalent changes and modifications made according to the claims of the present invention and the contents of the description are still the same. Belong to the scope of the present invention.

Claims (6)

1. a kind of combined battery bag, it is characterised in that include：

An at least battery strings, each battery strings include at least two battery modules, and each battery module has and to include two separately The housing of upstanding wall, and for storing electric energy and being provided out the energy-storage units of stored electric energy, the energy-storage units are set Between the upstanding wall and including two polar ends for abutting against nearly two upstanding wall respectively；And

At least a connector, it is used to connect the adjacent battery module of at least two-phase and including an inlay card in the two-phase per a connector The basal wall of the housing of adjacent battery module, and two be connected to the basal wall two opposite ends double wall, two double wall The upstanding wall of the housing of at least one described two adjacent battery module that recline simultaneously contacts the pole of described two adjacent battery modules Property end and electrically connect two battery module.

2. combined battery bag according to claim 1, it is characterised in that be also placed on described at least one comprising at least one Fixator at the top of one double wall of connector.

3. combined battery bag according to claim 1, it is characterised in that the two of any battery module of the battery strings Polar end is anode and negative electrode respectively, and the battery module is lined up in a manner of anode, negative electrode interlock, and the battery module leads to At least a connector is crossed into electrical series, two double walls of each connector recline described two adjacent battery modules respectively The upstanding wall of housing and the polar end for contacting described two adjacent battery modules respectively.

4. combined battery bag according to claim 1, it is characterised in that the quantity of the connector is more than two, institute Two polar ends for stating any battery module of battery strings are anode and negative electrode respectively, and the battery module is with the pole of identical polar Property end arranges with being located at homonymy, and by the connector into electrical parallel connection.

5. combined battery bag according to claim 4, it is characterised in that described in the basal wall inlay card per a connector Battery module is located at the upstanding wall of the same side, and the battery module that reclines of the double wall in two double wall is located at the same side Upstanding wall simultaneously contacts the battery module simultaneously and is located at the polar end of the same side and makes the battery module into electrical parallel connection.

6. combined battery bag according to claim 1, it is characterised in that comprising multiple battery strings, and multiple connectors, The battery module number of each battery strings is identical, and two polar ends of any battery module are anode and negative electrode respectively, each battery The battery module in string connects into electrical series with the several of the connector, connects into each connection of electrical series Two double walls of device recline respectively described two adjacent battery modules housing upstanding wall and contact described two adjacent electricity respectively The polar end of pond module, and the battery strings several connect into electrical parallel connection with remaining of the connector.